JP3272660B2 - Surface material mounting device for cylinder of printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface material mounting device for a cylinder of a printing press, and more particularly to a surface material mounting device for a cylinder of a printing press for preventing adhesion of ink.

[0002]

2. Description of the Related Art FIGS. 6, 7A and 7B show the arrangement of cylinders in a printing press and the transport path of printing paper.
FIG. 7A is a diagram illustrating an arrangement relationship of each cylinder in a two-color printing press. Each cylinder rotates in the direction indicated by the arrow, and holds the conveyed sheet, transfers it to the adjacent cylinder, and conveys it. Then, predetermined printing is performed on the sheet during the transport process.

[0003] The sheet fed into the feed cylinder 50 is an impression cylinder 5.
1 and passes between the impression cylinder 51 and the blanket cylinder 52. Here, a printing plate is wound around a plate cylinder 53 adjacent to the blanket cylinder 52, and the first color ink and water are supplied to the printing plate. Then, the print image represented by the first color ink is transferred to the blanket cylinder 52, and the printed image of the first color is printed on a sheet passing between the impression cylinder 51 and the blanket cylinder 52. Printed.

The sheet passing between the impression cylinder 51 and the blanket cylinder 52 is further transferred from a transfer cylinder 54 to a transfer cylinder 55. Then, the sheet is conveyed from the transfer cylinder 55 to the impression cylinder 57 via the transfer cylinder 56. The printing plate wound around the plate cylinder 59 is supplied with a second color ink or water, and a print image of the second color surface ink is transferred to the blanket cylinder 58, and the second color printing is performed on a sheet. Is performed.

[0005] The sheet on which the two-color printing has been performed in this manner is delivered to the paper discharge cylinder 60 and sent out from the paper discharge cylinder 60 to the paper discharge section. Here, the transfer cylinder 54 and the transfer cylinder 5
6. Regarding the paper discharge cylinder 60, the surface on the printed side of the sheet comes into contact with the outer peripheral surface.

[0006] If ink adheres to the outer peripheral surface due to contact with the printed surface, the ink is transferred to the next conveyed sheet, thereby deteriorating the quality of printing. For this reason, the transfer cylinder 54, the transfer cylinder 56, the paper discharge cylinder 60
Has been treated to prevent ink adhesion.

In order to prevent the adhesion of ink, for example, there is a method in which fine irregularities are formed by directly performing processing on the outer peripheral surface of a cylinder. Due to the formation of the fine irregularities, it is possible to prevent the printing surface of the sheet from contacting the entire outer peripheral surface, and to prevent the adhesion of ink.

In some cases, Super Blue (trademark) formed of a gauze-like cloth material is further wound around the outer peripheral surface of the cylinder that has been subjected to such processing. Fine irregularities are also formed in Super Blue by weaving the fibers, so that the adhesion of ink can be prevented. In addition, since Super Blue is highly flexible, it is less likely to damage the printed surface of the sheet that comes into contact.

In some cases, instead of directly processing the outer peripheral surface of the cylinder to form fine irregularities, a jacket made of a thin iron plate is wound. Fine irregularities are formed on the surface of this jacket, and by winding and fixing the same, the adhesion of ink can be similarly prevented.

[0010] A cylinder using such a jacket is provided with a fixing mechanism for fixing the jacket. With this fixing mechanism, the jacket is fixed in a state wound around the outer peripheral surface of the cylinder, and printing is performed. The fixing mechanism is constituted by a clamp device or the like.

When Super Blue is used for such a jacket-wound type cylinder, first, the fixing mechanism is released and the jacket is removed. Then, super blue is wound in place of the jacket and fixed using a fixing mechanism. That is, the jacket and the super blue are exchanged and attached.

FIG. 7B is a diagram showing an arrangement relationship of each cylinder in a printing machine for duplex printing. The sheet fed into the feed cylinder 50 is guided between the impression cylinder 51 and the blanket cylinder 52,
The image transferred from the plate cylinder 53 to the blanket cylinder 52 is printed on the surface of the sheet. Then, the sheet is transferred to the reversing cylinder 61 via the transfer cylinder 54, and subsequently, the sheet is sent out by the reversing cylinder 61 and the reversing cylinder 62 in a state where the sheet is reversed.

In other words, the reversing cylinder 62 is positioned at the rear side gripping position 39.
At the edge of the sheet, the sheet is conveyed toward the impression cylinder 57. As a result, the sheet is turned upside down. Then, the image transferred from the plate cylinder 59 is printed on the back surface of the sheet. Thereafter, the sheet is transferred from the impression cylinder 57 to the paper discharge cylinder 60 and sent out to the paper discharge unit.

In the configuration shown in FIG. 7B, the printing surface of the sheet comes into contact with the transfer cylinder 54, the reversing cylinder 62, the impression cylinder 57, and the discharge cylinder 60. Then, with respect to the impression cylinder 57, the printing surface (front surface) of the sheet comes into contact with the outer peripheral surface, and at the same time, the print image from the blanket cylinder 58 is printed on the rear surface.

For this reason, super blue cannot be used to prevent ink from adhering to the outer peripheral surface of the impression cylinder 57. That is, as described above, since super blue is formed of thin gauze and has high flexibility, when super blue is wrapped around the impression cylinder 57, the pressure between the impression and the blanket cylinder 58 becomes uneven, and the Printing cannot be properly performed on the back side of paper. Therefore, super blue is not used for the impression cylinder 57.

Next, the configuration of the printing press shown in FIG. 6 will be described. This printing machine has a double-sided printing function. The sheet fed to the paper feed cylinder 40 is delivered to the impression cylinder 41,
When passing between the impression cylinder 41 and the blanket cylinder 42, the first color print image transferred from the plate cylinder 43 to the blanket cylinder 42 is printed on the surface of the sheet. Subsequently, when passing between the impression cylinder 41 and the blanket cylinder 44, the second color print image transferred from the plate cylinder 45 to the blanket cylinder 44 is printed on the surface of the sheet.

Then, the sheet is delivered to the impression cylinder 46,
Here, the front and back of the sheet are reversed. In this inverted state,
The print image transferred from the plate cylinder 48 to the blanket cylinder 47 is printed on the back side of the sheet. Thereafter, the sheet is sent out to the sheet discharge section via the impression cylinder 46. As described above, the surface 2
Printing of one color and one back color is performed.

The printing press shown in FIG. 6 can print only the front side. In this case, the blanket cylinder 47 is positioned away from the impression cylinder 46 so that backside printing is not performed. Thus, the printing press shown in FIG.
The printing operation can be performed by selecting either double-sided printing or front-side printing. When double-sided printing is performed, super blue cannot be used for the impression cylinder 46 as described above.

[0019]

The cylinders of the above conventional printing press have the following problems. For cylinders of the type in which fine irregularities are formed by directly processing the outer peripheral surface, if maintenance such as replacement due to deterioration of the irregular surface is performed, the cylinder itself must be Must be removed. For this reason, there is a problem that maintenance and repair are troublesome and work efficiency is poor.

On the other hand, such a problem does not occur in a cylinder of a type in which a jacket is wound instead of forming fine irregularities by directly processing the outer peripheral surface. If the jacket is removed from the cylinder, maintenance and repair can be performed relatively easily.

However, on the other hand, when the jacket and the super blue are to be exchanged, it is necessary to temporarily release the fixing mechanism such as a clamp and remove the jacket, and then wind the super blue and fix it by the fixing mechanism. For this reason, there is a problem that the work for preventing the adhesion of the ink is troublesome and the work efficiency is reduced.

In the configuration of the printing machine shown in FIG. 6, double-sided printing or single-sided printing can be selected. For this reason, when performing double-sided printing, the impression cylinder 4 is required prior to the printing operation.
It is necessary to remove the super blue wrapped around 6 and replace it with a jacket. Therefore,
In the configuration of the printing press shown in FIG. 6, there is a particularly strong need for a mechanism capable of easily attaching and detaching Super Blue.

Accordingly, the present invention is directed to a printing press capable of improving the efficiency of repair and maintenance work and the efficiency of replacing rigid surface materials such as jackets with soft surface materials such as Super Blue. An object of the present invention is to provide a surface material mounting device for a cylinder.

[0024]

According to the first aspect of the present invention, there is provided an apparatus for mounting a surface material in a cylinder of a printing press, wherein a rigid surface material is wound around an outer peripheral surface to prevent ink from adhering to printing paper. Alternatively, the rigid face material can be removed from the outer peripheral surface.

As described above, since the rigid surface material is wound on the outer peripheral surface or is removable from the outer peripheral surface,
Maintenance such as repair and cleaning is easier than that in which processing for preventing ink adhesion is directly applied to the outer peripheral surface of the cylinder, and the work efficiency of repair and maintenance can be improved.

Further, it is possible to wind a flexible face material on the rigid face material to prevent the ink from adhering to the printing paper. As described above, since the flexible face material is wound around the rigid face material, it is not necessary to remove the rigid face material from the outer peripheral surface of the cylinder when winding the flexible face material. Therefore, it is possible to save time and effort when replacing the rigid face material with the soft face material, and it is possible to enhance work efficiency.

Further, it is possible to remove the flexible face material from the rigid face material. For this reason, when replacing a flexible surface material with a rigid surface material, it is only necessary to remove the flexible surface material, and it is possible to save time and effort for replacement work and improve work efficiency.

According to a second aspect of the present invention, the first fixing portion sandwiches the end portion of the rigid surface material between the first fixing portion and the fixing surface, and connects the end portion of the rigid surface material to the fixing surface. Fix it. Further, the second fixing portion sandwiches the end portion of the flexible face material between the first fixing portion and the second fixing portion, and fixes the end portion of the flexible face material.

As described above, the first fixing portion and the second fixing portion are positioned so as to overlap each other, and are fixed by sandwiching the end of the rigid face material and the end of the flexible face material. For this reason, it becomes possible to efficiently arrange the first fixing portion and the second fixing portion while sandwiching a relatively wide range between the end of the rigid face material and the end of the flexible face material. For this reason, the end of the rigid surface material and the end of the flexible surface material can be securely fixed, and the space for arranging the first fixing portion and the second fixing portion can be made more efficient.

According to a third aspect of the present invention, the holding portion holds the end of the rigid surface material, and the moving portion holds the holding portion in a direction in which the rigid surface material is in close contact with the outer peripheral surface. Move. Therefore, the rigid surface material can be easily and reliably brought into close contact with the outer peripheral surface.

According to a fourth aspect of the present invention, in the apparatus for attaching a face material to a cylinder of a printing press, the attaching portion detachably attaches an end of the flexible face material. Therefore, the flexible face material can be easily wound around the rigid face material and fixed, or the flexible face material can be easily removed from the rigid face material.

[0032]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for mounting face materials in a cylinder of a printing press according to the present invention. FIG. 1 is a plan view of the impression cylinder 46 according to the present embodiment, and FIG. 2 is a cross-sectional view taken along arrow II in FIG. 3A is a cross-sectional view taken along the line II-II shown in FIG. 1. FIG. 3B is a cross-sectional view showing the positional relationship among the impression cylinder 46, the jacket head side clamp 2, and the super blue head side clamp 3 shown in FIG. FIG.

FIG. 4A is a view taken in the direction of the arrow III in FIG. 2 and shows the jacket head side clamp 2 and the super blue head side clamp 3. FIG. 4B shows FIG.
FIG. 4 is a view taken in the direction of arrow IV shown in FIG.

FIG. 5A is a diagram showing the back surface of the jacket 10, and FIG. 5B is a diagram showing the back surface of the super blue 15. FIG. 6 is a side view showing the arrangement of each cylinder of the duplex printing machine. Details are omitted in FIG.

The printing machine shown in FIG. 6 has the function of double-sided printing. The sheet fed into the paper feed cylinder 40 is an impression cylinder 41.
When passing between the impression cylinder 41 and the blanket cylinder 42, the first color print image transferred from the plate cylinder 43 to the blanket cylinder 42 is printed on the surface of the sheet. Subsequently, when passing between the impression cylinder 41 and the blanket cylinder 44,
The printed image of the second color transferred to No. 4 is printed on the surface of the sheet.

Then, the sheet is an impression cylinder 46 which is a cylinder.
, Where the front and back of the sheet are reversed. In this inverted state, the print image transferred from the plate cylinder 48 to the blanket cylinder 47 is printed on the back surface of the sheet. Thereafter, the sheet is sent out to the sheet discharge section via the impression cylinder 46. As described above, printing of two colors on the front surface and one color on the back surface is performed.

The printing machine shown in FIG. 6 can print only the front side. In this case, the blanket cylinder 47 is positioned away from the impression cylinder 46 so that backside printing is not performed. Thus, the printing press shown in FIG.
The printing operation can be performed by selecting either double-sided printing or front-side printing.

Regarding the impression cylinder 46, the surface of the printed sheet comes into contact with the impression cylinder 46 in either case of double-sided printing or front-side printing. On the other hand, if ink adheres to the outer peripheral surface of the impression cylinder 46 due to contact with the printed surface, the ink is transferred to the next transported sheet, thereby deteriorating print quality. .

For this reason, it is necessary to prevent ink from adhering to the impression cylinder 46. In the present embodiment, the present invention is applied to the impression cylinder 46. In the present embodiment, a jacket 10 as a rigid surface material is wound on an outer peripheral surface 46M of the impression cylinder 46, and a super blue 15 as a flexible surface material is wound over the jacket 10.

The jacket 10 is made of a thin metal plate, and has fine irregularities on the surface. Due to the formation of the fine irregularities, it is possible to prevent the printing surface of the sheet from contacting the entire outer peripheral surface, and to prevent the adhesion of ink.

The super blue 15 is formed of a gauze-like cloth material. Fine irregularities are formed by weaving gauze-like fibers, so that the adhesion of ink can be prevented. Further, since Super Blue 15 is rich in flexibility, there is a low possibility that the printed surface of the contacting sheet is damaged.

When printing is performed only on the front surface of the printing machine of the double-sided printing shown in FIG. 6, the super blue 15 is wound around the jacket 10 on the outer peripheral surface 46M of the impression cylinder 46 in order to prevent ink from adhering. The printed surface is reliably prevented from being damaged.

In the double-sided printing press shown in FIG. 6, when performing double-sided printing, the super blue 15 is removed, and printing is performed with the jacket 10 wound on the outer peripheral surface 46M of the impression cylinder 46. That is, since super blue is formed of thin gauze and has high flexibility, if printing is performed with super blue wrapped around the impression cylinder 46, the pressure between the blank and the blanket cylinder 47 becomes non-uniform, and It is not possible to print properly on the back side of the sheet. Therefore, when performing double-sided printing, the super blue 15 is removed.

The details of the impression cylinder 46 around which the jacket 10 and the super blue 15 are wound will be described below. The impression cylinder 46 rotates around a trunk axis 46J as a central axis. The impression cylinder 46 has the impression cylinder notch 14 formed therein. A plurality of jaws 9 are located in the impression cylinder notch 14. Each jaw 9 is supported by a jaw shaft 9J. The jaws 9 sandwich and hold the end of the sheet, and the
The rotation of 6 conveys the sheet.

A jacket head side clamp 2 as a first fixing portion is provided on the head side of the impression cylinder notch portion 14 on an inner wall 17 (FIG. 3B) as a fixing surface. The jacket head side clamp 2 is tightened and fixed by a clamp fixing screw 2K. Clamp fixing screw 2K
In the present embodiment, three are provided along the trunk shaft 46J direction.

A super blue head side clamp 3 as a second fixing portion is provided so as to be able to abut against the jacket head side clamp 2. The super blue head side clamp 3 is tightened and fixed by a clamp fixing screw 3K. In the present embodiment, three clamp fixing screws 3K are provided along the trunk shaft 46J direction. The clamp fixing screw 3 </ b> K passes through the super blue head side clamp 3 and the jacket head side clamp 2 and is screwed into the impression cylinder 46.

As shown in FIG. 4A, three notches 3H are formed in the super blue head side clamp 3 at three places. The clamp fixing screw 2K is located in the clamp notch 3H.
With the super blue head side clamp 3 attached to the jacket head side clamp 2, the clamp fixing screw 2K can be rotated.

A support bracket 4 is provided on the rear side of the impression cylinder notch portion 14. This support bracket 4
Is fixed to the impression cylinder 46 by a bracket fixing screw 4K. When the bracket fixing screw 4K is tightened,
The head of the bracket fixing screw 4 </ b> K is buried from the surface of the support bracket 4. As shown in FIG. 4B, an adhesive cloth (magic tape (trademark) 18) is attached to the upper surface of the support bracket 4. In FIG. 1, the magic tape 18 is omitted. The magic tape 18 is an attachment portion in the present embodiment.

On the side surface of the support bracket 4, a tensioning screw 7 as a moving portion is provided so as to penetrate therethrough. The head of the tensioning screw 7 is located on the side of the claw 9 in the impression cylinder notch 14. The tensioning screw 7 is rotatable with respect to the support bracket 4 and is held so as not to move in the axial direction. In this embodiment, three tensioning screws 7 are provided along the trunk axis 46J.

A jacket bottom clamp 5 is located in the vicinity of the support bracket 4, and a jacket bottom clamp 6 is placed on the jacket bottom clamp 5 in an overlapping state. The jacket tail side lower clamp 5 and the jacket tail side upper clamp 6 are holding parts in the present embodiment.

As shown in FIG. 3A, the lower jacket side clamp 5 and the upper jacket bottom clamp 6 are integrally fixed by upper and lower clamp screws 8. In the present embodiment, four upper and lower clamp screws 8 are provided in the trunk shaft 46J direction.

The lower clamp 5 on the jacket bottom side and the upper clamp 6 on the jacket bottom side have lower clamp slots 5S, respectively.
An upper clamp slot 6S is formed (see FIG. 2). In the present embodiment, the lower clamp slot 5S and the upper clamp slot 6S are formed at four locations along the trunk shaft 46J direction.

The clamp fixing screw 5K penetrates the lower clamp long hole 5S and the upper clamp long hole 6S, and the clamp fixing screw 5K is screwed into the impression cylinder 46 side. In the present embodiment, four clamp fixing screws 5K are also provided along the trunk shaft 46J direction corresponding to the lower clamp long hole 5S and the upper clamp long hole 6S.

By tightening each of the clamp fixing screws 5K, the positions of the jacket rear lower clamp 5 and the jacket rear upper clamp 6 with respect to the impression cylinder 46 can be fixed. Further, if each clamp fixing screw 5K is loosened, the jacket lower side clamp 5 and the jacket rear upper clamp 6 move relative to the clamp fixing screw 5K in the range of the lower clamp long hole 5S and the upper clamp long hole 6S with an arrow 91. , 92
It can move in any direction.

As shown in FIG.
As shown in FIG. 3A, the thread portion of the tensioning screw 7 is screwed in from the side. That is, if the tensioning screw 7 is rotated while the clamp fixing screw 5K is loosened, the positions of the jacket bottom side lower clamp 5 and the jacket bottom side upper clamp 6 can be moved and adjusted in the directions of arrows 91 and 92.

Next, the jacket 1 is
The procedure for attaching and detaching Super Blue 0 and Super Blue 15 will be described. As shown in FIG. 5A, jacket notches 11 are formed at six locations on the jacket head end 10 a (end of the rigid face material) of the jacket 10. Also, the jacket bottom end 10b of the jacket 10 (the end of the rigid surface material).
, A jacket slot 12 is formed in four places, and similarly, a jacket hole 13 is formed in four places.

When attaching the jacket 10 to the impression cylinder 46, the clamp fixing screw 3K and the clamp fixing screw 2K are loosened in advance. Then, the jacket head end 10a
The gap between the inner wall 17 and the jacket head side clamp 2 (FIG. 3)
B).

At this time, the jacket notch 11 is positioned by being fitted to the clamp fixing screw 3K and the clamp fixing screw 2K, respectively. Then, in this state, the clamp fixing screw 2K is tightened, and the jacket head side end portion 10a of the jacket 10 is sandwiched and fixed between the inner wall 17 and the jacket head side clamp 2.

Thereafter, the jacket 10 is wound around the outer peripheral surface 46M of the impression cylinder 46. Next, loosen and remove the upper and lower clamp screws 8 and clamp fixing screws 5K located on the buttocks side,
The jacket rear side upper clamp 6 is once removed from the jacket rear side lower clamp 5.

Then, the jacket tail side end 10b of the jacket 10 is sandwiched between the jacket tail side lower clamp 5 and the jacket tail side upper clamp 6, and the upper and lower clamp screws 8 and the clamp fixing screw 5K are screwed. At this time, the upper and lower clamp screws 8 penetrate the jacket hole 13 formed in the jacket tail end 10b, and the clamp fixing screws 5K penetrate the jacket elongated hole 12 formed in the jacket tail end 10b.

At this point, the upper and lower clamp screws 8 are sufficiently tightened, and the jacket 1 is clamped between the jacket lower clamp 5 and the jacket rear upper clamp 6.
0 is securely fixed by sandwiching the jacket rear end 10b. On the other hand, the clamp fixing screw 5K is not strongly tightened, and the lower clamp 5 on the jacket rear side and the upper clamp 6 on the jacket rear side are movable in the directions of arrows 91 and 92.

As described above, the jacket 10 is made of a thin metal plate. Therefore, when the jacket 10 is simply wound around the impression cylinder 46, the jacket 10 does not completely adhere to the outer peripheral surface 46 </ b> M of the impression cylinder 46, and is slightly raised from the outer peripheral surface 46 </ b> M. In double-sided printing, in a state where the jacket 10 does not completely adhere to the outer peripheral surface 46M of the impression cylinder 46,
Cannot perform accurate backside printing.

For this reason, after winding the jacket 10 around the impression cylinder 46, the tension screw 7 is tightened. by this,
The jacket tail side lower clamp 5 and the jacket tail side upper clamp 6 move in the direction of arrow 91, and the jacket tail side end 10b is pulled in the direction of arrow 91. by this,
The jacket 10 adheres along the outer peripheral surface 46M of the impression cylinder 46.

After the jacket bottom side lower clamp 5 and the jacket bottom side upper clamp 6 have been moved in the direction of arrow 91 in this manner, the clamp fixing screw 5K is strongly tightened to position the jacket bottom side lower clamp 5 and the jacket bottom side upper clamp 6. Is fixed. The jacket 10 is attached to the impression cylinder 46 as described above.

When removing the jacket 10 from the impression cylinder 46, after loosening the tension screw 7, the upper and lower clamp screws 8 and the clamp fixing screw 5K are removed, and the jacket bottom end 10b of the jacket 10 is removed. Then, the clamp fixing screw 2K is loosened, and the jacket head side end 10a is removed from between the inner wall 17 and the jacket head side clamp 2.

Next, a procedure for attaching and detaching the super blue 15 will be described. The super blue 15 is wound over the jacket 10 wound around the impression cylinder 46.
When the super blue 15 is attached, first, the clamp fixing screw 3K is loosened, and the jacket head end 10a of the jacket 10 is inserted between the jacket head clamp 2 and the super blue head clamp 3.

At this time, as shown in FIG. 4A, the end of the super blue head side end 15a (the end of the flexible surface material) is inserted deeply so as to be located near the clamp fixing screw 2K or the clamp fixing screw 3K. . Then, in this state, the clamp fixing screw 3K is strongly tightened, and the super blue head side end portion 15a is sandwiched and fixed between the jacket head side clamp 2 and the super blue head side clamp 3.

After the super blue head side end portion 15a is fixed, the super blue 15 is wound around the jacket 10 in an overlapping manner. As shown in FIG. 5B, a magic tape (adhesive cloth) 19 as an attachment portion is attached to the back surface of the super blue tail side end 15b (the end of the flexible surface material). After the super blue 15 is overlaid on the jacket 10 and wound, the magic tape 19 is adhered to the magic tape 18 fixed on the support bracket 4. As described above, super blue 1
5 can be wound.

When the Super Blue 15 is to be removed, the Super Blue tail end 15b of the Super Blue 15 is removed from the magic tape 18, and then the clamp fixing screw 3K is loosened, so that the jacket head side clamp 2 and the Super Blue head side clamp 3 Super blue head end 1 from between
Remove 5a.

As described above, the jacket 10 is
Is wound on the outer peripheral surface 46M of the
It is removable from above. For this reason, maintenance such as repair is easier than that in which processing for preventing ink adhesion is directly applied to the outer peripheral surface 46M, and the work efficiency of repair and maintenance can be improved. That is, for example, when the jacket 10 is deteriorated or damaged by a printing operation, the jacket 10 can be removed and replaced easily, and there is no need to remove the impression cylinder 46 itself from the printing press.

Also, Super Blue 15 is jacket 1
When the super blue 15 is wound, it is not necessary to remove the jacket 10 from the outer peripheral surface 46M of the impression cylinder 46 when the super blue 15 is wound. For this reason, it is possible to save time and effort when replacing the jacket 10 with the super blue 15, and it is possible to enhance work efficiency.

Further, since the super blue 15 can be removed from the jacket 10, when replacing the super blue 15 with the jacket 10, it is only necessary to remove the super blue 15, and it is possible to save labor for replacement. , Work efficiency can be improved.

Further, the jacket head side clamp 2 and the super blue head side clamp 3 are located in an overlapping state, and the jacket head side end 10
a and Super Blue 15 Super Blue head end 15
a is sandwiched and fixed. For this reason, a relatively wide range is sandwiched between the jacket head side end portion 10a and the super blue head side end portion 15a,
And the super blue head side clamp 3 can be efficiently arranged.

That is, for example, the jacket head side clamp 2 and the super blue head side clamp 3 can be brought into contact with the inner wall 17 without disposing the jacket head side clamp 2 and the super blue head side clamp 3 in an overlapping state. In this case, the jacket head end 10a and the super blue head end 15a cannot be sandwiched over a wide range, and cannot be securely fixed. As shown in FIG. 2, the jaw 9 is located in the impression cylinder notch 14 of the impression cylinder 46, and the operation space for the jacket head side clamp 2 and the clamp fixing screw 3K is narrow. For this reason, if the jacket head side clamp 2 and the super blue head side clamp 3 are not arranged to overlap each other, the workability cannot be secured and the arrangement efficiency is lacking.

As described above, by positioning the 2 and the super blue head side clamp 3 in an overlapping state, the jacket head side end 10a and the super blue head side end 15
With respect to a, the jacket head side clamp 2 and the super blue head side clamp 3 can be efficiently arranged while sandwiching a relatively wide range.

Further, the jacket bottom side lower clamp 5 and the jacket bottom side upper clamp 6 are super blue bottom side end portions 1.
0b, and the tensioning screw 7 is attached to the jacket lower clamp 5 in the direction in which the jacket 10 comes into close contact with the outer peripheral surface 46M.
The upper clamp 6 on the back side of the jacket is moved. Therefore, the jacket 10 can be easily and reliably brought into close contact with the outer peripheral surface 46M.

The magic tapes 18 and 19 attach the super blue tail end 15b of the super blue 15 in a detachable manner. Therefore, the super blue 15 can be easily overlaid on the jacket 10 and wound and fixed, or the 15 can be easily removed from the jacket 10.

In this embodiment, the jacket head side clamp 2 for attaching and detaching the jacket 10 and the super blue 15 to and from the impression cylinder 46 and the clamp fixing screw 2
K, Super Blue head side clamp 3, Clamp fixing screw 3K, Jacket bottom side lower clamp 5, Clamp fixing screw 5K, Jacket bottom side upper clamp 6, Support bracket 4, Tensioning screw 7, Magic tape 18, etc. Device.

In the above-described embodiment, the jacket 10 made of a thin iron plate is exemplified as the rigid surface material. However, any material having a rigidity can be used as long as it can prevent the adhesion of ink and has rigidity. Can also be adopted.
Also, the super blue 15 made of a gauze-like cloth material has been exemplified as the flexible surface material. However, any material that can prevent the adhesion of ink and has flexibility is used, for example. You can also.

Further, the jacket head side clamp 2 is exemplified as the first fixing member, and the super blue head side clamp 3 is exemplified as the second fixing member. However, other shapes and structures may be used as long as the ends of the rigid face material and the ends of the flexible face material can be fixed.

Furthermore, the lower clamp 5 on the jacket bottom side and the upper clamp 6 on the jacket bottom side have been exemplified as the holding portions.
Other shapes and structures can be adopted as long as they can hold the end of the rigid face material. Although the tensioning screw 7 is illustrated as the moving part, other shapes and structures can be adopted as long as the holding part is moved in a direction in which the rigid surface material comes into close contact with the outer peripheral surface. For example, a configuration in which the holding portion is moved using the urging force of a coil spring may be used.

Further, a magic tape 18 as an attachment portion,
Although 19 is illustrated, another configuration may be adopted as long as the end of the flexible face material is detachably attached. It may be attached by a magnetic force using a magnet or the like.

[Brief description of the drawings]

FIG. 1 is a plan view of an impression cylinder 46 in an embodiment of a face material attaching device in a cylinder of a printing press according to the present invention.

FIG. 2 is a cross-sectional view taken along an arrow II in FIG.

3A is a cross-sectional view taken along the line II-II shown in FIG. 1, and FIG. 3B is a cross-sectional view showing the positional relationship among the impression cylinder 46, the jacket head side clamp 2, and the super blue head side clamp 3 shown in FIG. FIG.

FIG. 4A is a view in the direction of arrow III in FIG. 2;
FIG. 3 is a view showing a jacket head side clamp 2 and a super blue head side clamp 3, and FIG. 4B is a view in the direction of arrow IV shown in FIG. 2, showing a support bracket 4 and a jacket tail side upper clamp 6. .

FIG. 5A is a diagram showing the back surface of the jacket 10, and FIG.
FIG. 4 is a diagram showing the back surface of Super Blue 15.

FIG. 6 is a side view showing an arrangement of each cylinder of the duplex printing machine.

FIG. 7A is a diagram illustrating an arrangement relationship of cylinders in a two-color printing press, and FIG. 7B is a diagram illustrating an arrangement relationship of cylinders in a duplex printing press.

[Explanation of symbols]

 2 ····· Jacket top side clamp 3 ····· Super blue head side clamp 5 ····· Jacket bottom side lower clamp 6 ····· Jacket top side clamp 7. Screws for jacket 10 ... Jacket 10a ... End of jacket head side 10b ... End of jacket bottom side 15 ... Super blue 15a ... Super blue head end Part 15b ····· Super blue butt side end part 17 ····· Inner wall 18, 19 ······ Velcro 46M ····· Outer peripheral surface 46J ····· Torso axis

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B41F 30/00-30/04

Claims (4)

(57) [Claims] 1. A surface material mounting device used in a cylinder of a printing press for moving a printing sheet by rotating the printing sheet around an outer peripheral surface and rotating about a central axis to prevent ink from adhering to the printing sheet. It is possible to wind the rigid surface material on the outer peripheral surface, or to remove the rigid surface material from the outer peripheral surface, and wrap a flexible surface material on the rigid surface material to prevent ink from adhering to the printing paper, Alternatively, the surface material mounting device for a cylinder of a printing press, wherein the flexible surface material can be removed from the rigid surface material. 2. The surface material mounting device for a cylinder of a printing press according to claim 1, wherein the end of the rigid surface material is fixed to an end of the rigid surface material. A first fixing portion for pinching and fixing the end of the rigid surface material; a second fixing portion for holding the end of the flexible surface material between the first fixing portion and the first fixing portion and fixing the end of the flexible surface material. A fixing device, comprising: a surface material mounting apparatus for a cylinder of a printing press, comprising: 3. A surface material mounting apparatus for a cylinder of a printing press according to claim 1, wherein the holding portion holds an end portion of the rigid surface material, and the movement moves the holding portion in a direction in which the rigid surface material comes into close contact with the outer peripheral surface. A surface material mounting apparatus for a cylinder of a printing press, comprising: 4. The surface of a cylinder of a printing press according to claim 1, further comprising: an attachment portion for detachably attaching an end of the flexible surface material. Material mounting device.