JP5880141B2 - Impression rail installation rail - Google Patents

Description

  The present invention relates to an impression cylinder installation rail for installing an impression cylinder bearing at a bearing installation location of an impression cylinder attachment device.

  An impression cylinder used in a printing machine has a linearly extending shaft core, a pair of bearings provided at both ends of the shaft core, and a pressing portion made of rubber or the like provided around the shaft core. doing. Such an impression cylinder needs to be replaced at a certain frequency.

  Generally, the impression cylinder is attached to an impression cylinder attachment arm (impression cylinder attachment device) with a bearing. For this reason, when exchanging the impression cylinder as described above, it is necessary to move the bearing of the impression cylinder to the bearing installation location of the impression cylinder mounting arm. Conventionally, an L-shaped rail is installed on the impression cylinder mounting arm, a bearing is placed on the rail, and the bearing of the impression cylinder is slid by pushing the impression cylinder by hand. It was moved to the place.

  However, due to machining accuracy, it is necessary to provide a gap between the bearing side surface of the L-shaped rail and the bearing, and even if the bearing is moved on the rail, the bearing is translated exactly parallel to the rail. It was difficult to let For this reason, when using a self-aligning bearing as the bearing, the bearing may be installed on the impression cylinder mounting arm in a state where the outer ring and the inner ring of the bearing are twisted. If the outer ring and the inner ring of the bearing are twisted and installed in this way, there is a risk of an accident such as damage to the bearing during operation of the printing press.

  In this regard, Patent Document 1 discloses a mechanism for moving a bearing along a groove in the printing unit in order to install the bearing of the impression cylinder at a specified position in the printing unit. However, even if the mechanism described in Patent Document 1 is used, twisting of the outer ring and the inner ring of the bearing cannot be eliminated. Further, according to the technique of Patent Document 1, since it is necessary to change the internal design in the printing unit, it is difficult to divert to an existing printing machine.

Special table 2005-519786 gazette

  In view of the above points, an object of the present invention is to provide an impression cylinder installation rail for accurately and easily installing a bearing of an impression cylinder at a bearing installation location of an impression cylinder mounting device.

The impression cylinder installation rail of the present invention,
A pressure drum installation rail for installing a pressure drum having a shaft core and a pair of bearings provided at both ends of the shaft core at a predetermined position of the pressure drum mounting device,
It extends in parallel to the bearing installation location of the impression cylinder mounting device, and includes a pair of rails formed with grooves,
The groove has a narrowest bottom surface in the cross section,
The width of the lower surface of the groove has a size that matches the thickness of the bearing.

In the impression cylinder installation rail of the present invention,
The groove may have a trapezoidal shape in cross section.

In the impression cylinder installation rail of the present invention,
In the cross section, the groove may have a rectangular portion having a rectangular shape and a trapezoidal portion having a trapezoidal shape located above the rectangular portion.

In the impression cylinder installation rail of the present invention,
In the cross section, the groove has a rectangular first rectangular portion, and a rectangular second rectangular portion located above the first rectangular portion and having a width larger than the width of the first rectangular portion; You may have.

In the impression cylinder installation rail of the present invention,
The groove may have a trapezoidal portion having a trapezoidal shape and a rectangular portion having a rectangular shape located above the trapezoidal portion in a cross section.

In the impression cylinder installation rail of the present invention,
The pair of rails may extend linearly to the bearing installation location of the impression cylinder mounting device.

In the impression cylinder installation rail of the present invention,
The lower surface of the groove of the rail may be positioned at the same height as the lower surface of the bearing installation location of the impression cylinder mounting device.

  According to the present invention, a pair of rails extending in parallel to the bearing installation location of the impression cylinder mounting device and having grooves formed therein are provided. The groove has the narrowest width on the lower surface, and the width of the lower surface of the groove has a size that matches the thickness of the bearing. For this reason, the bearing of an impression cylinder can be correctly installed in the bearing installation location of an impression cylinder attaching device only by installing a bearing on the groove of a rail and pushing an impression cylinder.

The upper top view which showed the aspect in which the impression cylinder was mounted on the impression cylinder installation rail by embodiment of this invention. Side sectional drawing which showed the positional relationship of the impression cylinder installation rail by the embodiment of this invention, and the impression cylinder attachment arm. Sectional drawing cut | disconnected by the straight line III-III 'shown in FIG. The expanded sectional view for demonstrating the relationship between the width | variety in the lower surface of the groove | channel of the impression cylinder installation rail by embodiment of this invention, and the thickness of a bearing. The expanded sectional view which showed the impression cylinder installation rail by the modification 1 of embodiment of this invention. The expanded sectional view which showed the impression cylinder installation rail by the modification 2 of embodiment of this invention. The expanded sectional view which showed the impression cylinder installation rail by the modification 3 of embodiment of this invention. The figure which looked at the bearing installed using the impression cylinder installation rail by embodiment of this invention from the upper surface, and the figure which looked at the said bearing from the side. The upper top view for demonstrating the aspect which installs an impression cylinder in the impression cylinder attachment arm using a prior art. The figure which looked at the bearing installed in the impression cylinder attachment apparatus by the prior art from the upper surface, and the figure which looked at the said bearing from the side. The side view for demonstrating the general structure of a gravure printing machine.

Embodiment << Configuration >>
Hereinafter, an embodiment of an impression cylinder installation rail 10 according to the present invention will be described with reference to the drawings. Here, FIG. 1 to FIG. 8 are diagrams for explaining an embodiment of the present invention. In the following description, a gravure printing machine is used. However, the present invention is not limited to this. For example, the present invention can be applied to an offset printing machine.

  In general, as shown in FIG. 11, the gravure printing machine includes an ink pan 93 for storing ink I, and a recess (cell) (not shown) provided on the surface of the ink I immersed in the ink I. A plate cylinder 90 embedded in the plate cylinder 90, provided to extend along the longitudinal direction of the plate cylinder 90, and provided to face the plate cylinder 90, a doctor 94 for wiping off excess ink I attached to the plate cylinder 90, An impression cylinder 50 that sandwiches the original fabric 98 with the plate cylinder 90 and a gold roll 91 for applying an appropriate pressure to the impression cylinder 50 are provided.

  The impression cylinder installation rail 10 according to the present embodiment is used to replace the impression cylinder 50 described above. More specifically, the impression cylinder 50 is mounted on a bearing of an impression cylinder attachment arm (impression cylinder attachment device) 40. Used to install at location 41 (see FIG. 2).

  As shown in FIG. 1, the impression cylinder 50 includes a linearly extending shaft core 53, a pair of bearings 55 provided at both ends of the shaft core 53, rubber provided around the shaft core 53, and the like. The pressing part 51 which consists of. Of these, the bearing 55 is a radial bearing that receives a radial load. As shown in FIG. 8A, the bearing 55 is provided between the inner ring 56 provided on the shaft core 53, the outer ring 57 disposed outside the inner ring 56, and the inner ring 56 and the outer ring 57. And a plurality of rotating bodies 58. The rotating body 58 is composed of a sphere, a roller or the like.

  Although the present embodiment will be described using the bearing 55 having such a configuration, it is natural that the impression cylinder installation rail 10 of the present invention can be applied to a bearing 55 other than such a mode. The impression cylinder installation rail 10 of the present invention can be applied to any impression cylinder 50 used in a general printing machine, and the size and material of the impression cylinder 50 are not limited.

  As shown in FIG. 1, the impression cylinder installation rail 10 according to the present embodiment extends in a straight line and parallel to the bearing installation location 41 of the impression cylinder mounting arm 40 and has a pair of rails 10 a formed with grooves 15. 10b. The groove 15 has a lower width in the lateral cross section (cross section orthogonal to the direction in which the rails 10a and 10b extend (X direction in FIG. 1)) compared to the width of the upper end (W2 in FIG. 4). The width of the lower surface 5 (W1 in FIG. 4) is the narrowest. More specifically, the groove 15 of the present embodiment has a trapezoidal shape in cross section (see FIG. 3), and the width of the groove 15 becomes narrower from the top to the bottom. FIG. 3 is a cross-sectional view taken along the line III-III ′ shown in FIG. However, in FIG. 3, the impression cylinder 50 is shown not from a cross section but from a front view.

  In the present embodiment, the width W1 of the lower surface 5 of the groove 15 is substantially the same as the thickness D of the bearing 55 (see FIG. 4). Although the term “matching size” is used in the claims of the present application, the term “matching size” not only means “exactly the same size” but also on the lower surface 5 of the groove 15. The case where the width W1 is substantially the same as the thickness D of the bearing 55 is also included. The “thickness” of the bearing 55 means a distance between the upper surface 55 and the lower surface 55b of the bearing 55 (see FIG. 4).

  As shown in FIG. 2, the lower surface 5 of the groove 15 of the rails 10 a and 10 b is positioned at the same height as the lower surface of the bearing installation location 41. In the claims of the present application, the term “same height” is used. However, the term “same height” does not only consist of the same height, but is slightly different in height. It is used to mean including cases.

《Action ・ Effect》
Hereinafter, the effect of the impression cylinder installation rail 10 which consists of the structure mentioned above is demonstrated.

  First, the pair of bearings 55 of the impression cylinder 50 are placed in the grooves 15 of the pair of rails 10a and 10b (see FIG. 3).

  Next, the impression cylinder 50 is pushed by the operator, and the impression cylinder 50 is moved along a pair of parallel rails 10a and 10b.

  Finally, each of the bearings 55 of the impression cylinder 50 is transported to the bearing installation location 41 of the impression cylinder mounting arm 40 and installed at the bearing installation location 41.

  In the process as described above, according to the present embodiment, the bearing 55 of the impression cylinder 50 can be accurately and easily installed at the bearing installation location 41 of the impression cylinder mounting arm 40.

  In other words, conventionally, due to processing accuracy, it is necessary to provide a gap between the bearing 55 side surface of the rail having a L-shaped cross section on the side of the bearing 55, and the bearing 55 is moved on the rail. However, it was difficult to translate the bearing 55 exactly parallel to the rail (see FIG. 9). Therefore, when the self-aligning bearing 55 is used as the bearing 55 as in the present embodiment, the bearing 55 may be installed on the impression cylinder mounting arm 40 with the outer ring 57 and the inner ring 56 being twisted. Yes (FIGS. 10 (a) and 10 (b)), there was a risk of accidents such as the bearing 55 being damaged during operation of the printing press. 10A is a view of the bearing 55 installed at the bearing installation location 41 according to the prior art as viewed from the upper surface 55a, and FIG. 10B is a view of the bearing 55 as viewed from the side. . On the other hand, FIG. 8A is a view of the bearing 55 installed using the impression cylinder installation rail 10 according to the present embodiment as viewed from the upper surface 55a, and FIG. It is the figure which looked at from the side.

  In this regard, according to the present embodiment, the pair of rails 10a and 10b extending in parallel to the bearing installation location 41 and having the grooves 15 formed therein are provided. The width of the groove 15 is the narrowest on the lower surface 5. For this reason, it is sufficient that only the width of the groove 15 on the lower surface 5 can be accurately formed, and accuracy is not required for the width of the other portions. For this reason, the width of the lower surface 5 of the groove 15 can be made approximately the same as the thickness of the bearing 55. Therefore, according to this embodiment, there is no need to provide a gap between the bearing 55 and the straight line 7 where the lower surface 5 and the side surface 6 of the groove 15 of the rails 10a and 10b intersect (see FIG. 4). For this reason, according to the present embodiment, the impression cylinder 50 can be accurately guided along the grooves 15 of the rails 10a and 10b, and the bearing 55 can be accurately installed at the bearing installation location 41. When the bearing 55 is displaced from the lower surface 5 of the groove 15, the bearing 55 slips along the side surface 6 of the groove 15 and is positioned at a position along the lower surface 5.

  Further, according to the present embodiment, even when the self-aligning bearing 55 is used, it is possible to prevent the outer ring 57 and the inner ring 56 of the bearing 55 from being twisted, and thus the operation of the printing press. It is possible to prevent an accident such as the bearing 55 from being broken.

  In the above-described embodiment, the groove 15 has a trapezoidal shape in the cross section. However, the present invention is not limited to this.

  For example, as shown in FIG. 5, the groove 15 may include a rectangular portion 12 having a rectangular shape in a cross section and a trapezoidal portion 13 having a trapezoidal shape located above the rectangular portion 12 (modified example). 1). Also in this case, if the height H of the rectangular portion 12 is small, it is sufficient that only the width of the rectangular portion 12 having a small height H can be accurately formed, and the width of the other portions is accurate. Not required. For this reason, it is not necessary to provide a gap between the rectangular portion 12 and the bearing 55. Therefore, the impression cylinder 50 can be accurately guided along the groove 15 of the rails 10a and 10b, and the bearing 55 can be accurately and easily installed at the bearing installation location 41, as in the above-described embodiment. Even when the self-aligning bearing 55 is used as in the present embodiment, the outer ring 57 and the inner ring 56 of the bearing 55 can be prevented from being twisted.

  For example, as shown in FIG. 6, the groove 15 is located on the first rectangular portion 14 a having a rectangular shape in the cross section and above the first rectangular portion 14 a, and from the width of the first rectangular portion 14 a. May have a second rectangular portion 14b having a large width (Modification 2). Also in this case, if the height H of the first rectangular portion 14a is small, it is sufficient that only the width of the first rectangular portion 14a having a small height H can be accurately formed, and the widths of the other portions are limited. Accuracy is not required. For this reason, it is not necessary to provide a gap between the first rectangular portion 14a and the bearing 55. Therefore, the impression cylinder 50 can be accurately guided along the groove 15 of the rails 10a and 10b, and the bearing 55 can be accurately and easily installed at the bearing installation location 41, as in the above-described embodiment. Even when the self-aligning bearing 55 is used as in the present embodiment, the outer ring 57 and the inner ring 56 of the bearing 55 can be prevented from being twisted.

  Further, for example, as shown in FIG. 7, the groove 15 may have a trapezoidal portion 16 having a trapezoidal shape and a rectangular portion 17 having a rectangular shape located above the trapezoidal portion 16 in the cross section. Good (Modification 3). In this case, as in the embodiment shown in FIG. 4, it is sufficient that only the width of the groove 15 on the lower surface 5 can be accurately formed, and accuracy is not required for the width of other portions. For this reason, the width of the lower surface 5 of the groove 15 can be made approximately the same as the thickness of the bearing 55. Therefore, the impression cylinder 50 can be accurately guided along the groove 15 of the rails 10a and 10b, and the bearing 55 can be accurately and easily installed at the bearing installation location 41, as in the above-described embodiment. Even when the self-aligning bearing 55 is used as in the present embodiment, the outer ring 57 and the inner ring 56 of the bearing 55 can be prevented from being twisted.

  As shown in FIG. 2, according to the present embodiment, the lower surface 5 of the groove 15 of the rails 10 a and 10 b is positioned at the same height as the lower surface of the bearing installation location 41. For this reason, when the bearing 55 of the impression cylinder 50 moves from the rails 10a and 10b to the bearing installation location, it is possible to prevent the bearing 55 from being displaced due to excessive vibration applied to the bearing 55. The bearing 55 can be accurately installed on 41.

5 Lower surface 10 of groove Impression cylinder installation rail 10a, 10b Rail 12 Rectangular portion 13 Trapezoidal portion 14a First rectangular portion 14b Second rectangular portion 15 Groove 16 Trapezoidal portion 17 Rectangular portion 40 Impression cylinder mounting arm (impression cylinder mounting device)
41 Bearing installation location 50 Impression cylinder 51 Pressing portion 53 Axle core 55 Bearing 55a Bearing upper surface 55b Bearing lower surface

Claims (7)

A pressure drum installation rail for installing a pressure drum having a shaft core and a pair of bearings provided at both ends of the shaft core at a predetermined position of the pressure drum mounting device,
It extends in parallel to the bearing installation location of the impression cylinder mounting device, and includes a pair of rails formed with grooves,
In the cross section, the groove has the narrowest bottom surface,
The impression cylinder installation rail, wherein a width of a lower surface of the groove is a size that matches a thickness of the bearing.   The impression cylinder installation rail according to claim 1, wherein the groove has a trapezoidal shape in cross section.   2. The impression cylinder installation rail according to claim 1, wherein the groove includes a rectangular portion having a rectangular shape in a cross section and a trapezoidal portion having a trapezoidal shape located above the rectangular portion.   In the cross section, the groove has a rectangular first rectangular portion, and a rectangular second rectangular portion located above the first rectangular portion and having a width larger than the width of the first rectangular portion; The impression cylinder installation rail according to claim 1, further comprising:   2. The impression cylinder installation rail according to claim 1, wherein the groove has a trapezoidal portion having a trapezoidal shape and a rectangular portion having a rectangular shape located above the trapezoidal portion in a cross section.   6. The impression cylinder installation rail according to claim 1, wherein the pair of rails extend linearly to the bearing installation location of the impression cylinder attachment device.   The lower surface of the groove of the rail is positioned at the same height as the lower surface of the bearing installation location of the impression cylinder mounting device. Impression rail installation rail.

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