JP6101593B2 - Method for producing decorative cylinder - Google Patents

Description

The present invention relates to a method for manufacturing a decorative cylinder .

  Conventionally, as a method of manufacturing a decorative cylinder, for example, as shown in Patent Document 1 below, a transfer film having a print layer that can be transferred while rotating the cylinder around its axis is used as the cylinder by a stamp plate. A method is known in which a decorative cylinder is manufactured by transferring the printed layer onto the outer peripheral surface of the cylinder by transferring it while pressed onto the outer peripheral surface of the body.

JP 2007-320158 A

  However, in the conventional method of manufacturing a decorative cylinder, when the cylinder is formed in a tapered shape whose outer diameter gradually increases from one side to the other side in the axial direction, this cylinder Is rotated around the axis, the peripheral speed of the portion located on the other side in the axial direction of the outer peripheral surface of the cylinder is greater than the peripheral speed of the portion located on the one side in the axial direction. As a result, the transfer film may be twisted, for example, and the transfer film may be wrinkled.

The present invention has such has been made in view of the circumstances, even tapered cylindrical body, on its outer peripheral surface, pressurization capable of transferring the printing layer without causing wrinkles in the transfer film It aims at providing the manufacturing method of a decoration cylinder .

  In order to solve the above-described problems and achieve such an object, a method for manufacturing a decorative cylinder according to the present invention includes a supporting means for rotatably supporting a cylinder around its axis, and an outer periphery of the cylinder. A transfer plate having a transferable print layer while rotating the cylinder around its axis by the support means, using a stamp plate that presses the surface. Transferring in a state of pressing on the outer peripheral surface, a method for manufacturing a decorative cylinder by manufacturing the decorative cylinder by transferring the printing layer to the outer peripheral surface of the cylinder, In the process of transferring the printing layer to the outer peripheral surface of the cylinder, the outer diameter of the cylinder is gradually increased in diameter as it goes from one side to the other side in the axis direction. It is made to move toward the other side.

  According to this invention, the peripheral speed of the portion located on the other side in the axial direction of the outer peripheral surface of the cylindrical body is higher than the peripheral speed of the portion located on the one side in the axial direction. Thus, for example, the portion of the transfer film that is located on the other side in the axial direction on the outer peripheral surface of the cylinder is more cylindrical than the portion that is located on the one side in the axial direction on the outer peripheral surface of the cylindrical body. Even if the transfer film is twisted due to many passes on the outer peripheral surface of the tube, the cylinder is moved toward the other side in the axial direction in the process of transferring the printing layer to the outer peripheral surface of the cylindrical body. This makes it possible to eliminate this twist and prevent wrinkles from occurring on the transfer film.

  Here, when the cylindrical body moves toward the other side in the axial direction, a return spring that is expanded and contracted is disposed, and when the transfer of the printing layer to the outer peripheral surface of the cylindrical body is completed, The return spring may be restored and deformed by an elastic repulsive force, and the cylinder may be restored and displaced.

  In this case, when the transfer of the printing layer to the outer peripheral surface of the cylinder is completed, the return spring is restored and deformed by the elastic repulsive force, so that the cylinder is restored and displaced. The decorative cylinder can be quickly removed from the support means, and when the next cylinder is attached to the support means, the position of the next cylinder in the axial direction with respect to the support means is easily determined. Can do.

  Further, the manufacturing apparatus includes a telescopic biasing means that biases at least one of the cylindrical body and the stamp plate toward the other and supports the other so as to be movable back and forth. The urging force is caused to follow a change accompanying a rotation around the axis of the cylindrical body of a radius at a contact portion of the outer peripheral surface of the cylindrical body where the stamp plate contacts through the transfer film. The means may be expanded and contracted.

According to the present invention, when the radius of the abutting portion of the cylinder is reduced, the urging means is activated, and at least one of the cylinder and the stamp plate advances toward the other, Further, when the radius of the abutting portion of the cylinder is increased, the urging means is activated, and at least one of the cylinder and the stamp plate is retracted from the other. Accordingly, it is possible to always keep the pressing force of the stamp plate against the cylinder substantially equal regardless of the variation in the radius at the contact portion of the cylinder accompanying the rotation of the cylinder around the axis.
Therefore, even if the radius on the outer peripheral surface of the cylinder is not equal over the entire circumference, the printed layer of the transfer film can be transferred accurately and stably regardless of the circumferential position on the outer peripheral surface of the cylinder. it can.

  The manufacturing apparatus includes a base portion, and a swinging body supported on the base portion so as to be swingable about a swinging shaft and mounted with the support means. The urging means connects the base part and the oscillating body, and the support means and the urging means are separately arranged on both sides of the oscillating shaft in a side view as viewed from the oscillating axis direction. The oscillating body is oscillated about an oscillating axis so as to follow a change in radius at the abutting portion of the cylindrical body as the cylindrical body rotates about the axis, and The biasing means may be expanded and contracted.

  In this case, the biasing means is expanded and contracted while swinging the swinging body around the swinging shaft so as to follow the change in the radius at the contact portion of the cylindrical body accompanying the rotation of the cylindrical body around the axis. For example, as compared with the case where the urging means is directly connected to the support means, it is possible to easily stabilize the expanding and contracting mode of the urging means.

  According to this invention, even if it is a taper-shaped cylinder, a printing layer can be transcribe | transferred without producing a wrinkle on a transfer film on the outer peripheral surface.

It is a side view of the manufacturing apparatus for enforcing the manufacturing method of the decoration cylinder shown as one embodiment concerning the present invention. It is a top view of the manufacturing apparatus shown in FIG.

Hereinafter, with reference to drawings, a manufacturing method of a decoration cylinder and a decoration cylinder concerning one embodiment of the present invention are explained.
First, the schematic structure of the manufacturing apparatus 10 for implementing the manufacturing method of a decoration cylinder is demonstrated.

The manufacturing apparatus 10 includes support means 11 that supports the cylindrical body W so as to be rotatable about an axis O1 thereof, and a stamp plate 12 that presses the outer peripheral surface of the cylindrical body W.
As shown in FIGS. 1 and 2, the support means 11 includes a bearing base 13 and a support shaft that protrudes in the horizontal direction from the bearing base 13 and is supported by the bearing base 13 so as to be rotatable about its axis extending in the horizontal direction. Part 14. When the support shaft portion 14 is inserted and fixed in the cylinder W, the cylinder W is supported by the support means 11 so as to be rotatable around the axis O1. The support shaft portion 14 and the cylindrical body W are disposed coaxially. Further, the support means 11 includes a drive means (not shown) that supports the support shaft portion 14 so as to be rotatable about its axis.

The stamp plate 12 is disposed above the support means 11. The stamp plate 12 is disposed so as to be slidable in the horizontal direction perpendicular to the extending direction of the axis O1 in the horizontal direction. The stamp plate 12 is arranged to be movable up and down. The stamp plate 12 is provided with a heating means (not shown). On the lower surface of the stamp plate 12, a concavo-convex shape corresponding to a character, a figure, a symbol or the like to be transferred to the outer peripheral surface of the cylinder W is engraved.
Further, the manufacturing apparatus 10 is not shown in which the transfer film F having a transferable print layer is drawn out toward the cylinder W, and the transfer film F that passes over the outer peripheral surface of the cylinder W is not shown. A winding unit. These feeding and winding portions are arranged so that the transfer film F is drawn out and wound in one of the lateral directions (right direction in FIG. 1) between the cylindrical body W and the stamp plate 12. It is installed.

And in this embodiment, the support shaft part 14 is arrange | positioned so that sliding movement is possible along the axial direction.
Here, a flange portion 14a projecting outward in the radial direction is formed over the entire circumference at a midway position in the axial direction of the projecting portion of the support shaft portion 14 projecting outward from the bearing base 13. Yes. A return spring 19 is sheathed at a portion of the support shaft portion 14 located between the flange portion 14 a and the bearing base 13. The return spring 19 is a coil spring. The return spring 19 is expanded and contracted when the cylindrical body W slides in the direction of the axis O1 together with the support shaft portion 14. Further, the cylindrical body W is attached to a portion of the protruding portion of the support shaft portion 14 that is located on the protruding end side opposite to the bearing base 13 side than the flange portion 14a.

Further, in the present embodiment, the manufacturing apparatus 10 is provided with a telescopic attachment that urges at least one of the cylindrical body W and the stamp plate 12 toward the other and supports the other so as to be movable backward. A biasing means 15 is provided.
In the illustrated example, the urging means 15 urges the cylindrical body W toward the stamp plate 12 and supports the cylinder W so as to be movable backward. The biasing means 15 is a coil spring.

Further, in the present embodiment, the manufacturing apparatus 10 includes a base portion 16, and a swing body 17 that is supported on the base portion 16 so as to be swingable about the swing axis O 2 and to which the support means 11 is mounted. It is equipped with. The swing axis O2 extends in parallel at a position away from the axis O1. The swing axis O2 is positioned below the axis O1 and shifted in one of the lateral directions. The swing axis O2 may extend in a direction intersecting the axis O1.
The base portion 16 includes a main plate portion 16a whose upper and lower surfaces extend in the horizontal direction, and a support plate portion 16b that protrudes upward from the main plate portion 16a.
The rocking body 17 includes a mounting plate portion 17a whose upper and lower surfaces extend in the horizontal direction, and a bearing plate portion 17b that protrudes downward from the mounting plate portion 17a. The mounting plate portion 17 a is disposed above the base portion 16.
Here, the support plate portion 16b and the bearing plate portion 17b are connected via the shaft portion 18 disposed coaxially with the swing shaft O2, so that the swing body 17 swings to the base portion 16. It is supported so as to be swingable around the axis O2.

Here, the urging means 15 connects the base portion 16 and the rocking body 17.
In the illustrated example, the urging means 15 connects the upper surface of the main plate portion 16 a of the base portion 16 and the lower surface of the mounting plate portion 17 a of the oscillator 17.
The support means 11 is disposed on the upper surface of the mounting plate portion 17 a of the rocking body 17.
As shown in FIG. 1, the support means 11 and the urging means 15 are separately provided on both sides of the swing axis O2 in a side view as viewed from the swing axis O2.

  Next, a method for manufacturing a decorative cylinder using the manufacturing apparatus 10 configured as described above will be described.

First, the stamp plate 12 is moved forward toward the cylinder W, and the stamp plate 12 is pressed onto the outer peripheral surface of the cylinder W via the transfer film F. At this time, the transfer film F is drawn out and loosened by the circumference of the outer peripheral surface of the cylindrical body W, and the transferred transfer film F in the relaxed state is placed on the outer peripheral surface of the cylindrical body W.
Then, while rotating the cylindrical body W about its axis O1 by the support means 11, the stamp plate 12 is transferred in one lateral direction together with the above-mentioned slackened transfer film F, and the outer peripheral surface of the cylindrical body W The decorative cylinder 1 is manufactured by transferring the printing layer to the substrate. The cylindrical body W is always urged upward by the urging means 15 while the outer peripheral surface is pressed against the stamp plate 12.
Thereafter, the stamp plate 12 is moved backward from the cylindrical body W and returned to the original position. Moreover, the part by which the printing layer was transcribe | transferred to the outer peripheral surface of the cylindrical body W among the transfer films F paid out by the said delivery part is wound up by the said winding-up part. The winding may be performed at any time after the printing layer is transferred to the outer peripheral surface of the cylindrical body W.

Here, when the cylindrical body W is formed in a tapered shape whose outer diameter is gradually increased from one side in the direction of the axis O1 to the other side, the printing layer is transferred to the outer peripheral surface of the cylindrical body W. In the process, the cylindrical body W is moved toward the other side in the direction of the axis O1.
In the illustrated example, in the process of transferring the print layer to the outer peripheral surface of the cylinder W, the support shaft portion 14 is moved together with the cylinder W to the other side in the axis O1 direction with respect to the bearing base 13. The cylindrical body W is mounted on the support shaft portion 14 in a posture that gradually decreases in diameter as it moves away from the bearing base 13 along the direction of the axis O1. Further, in the process of transferring the printing layer to the outer peripheral surface of the cylindrical body W, the support shaft 14 and the cylindrical body W have the frictional force generated between the outer peripheral surface of the cylindrical body W and the transfer film F in the direction of the axis O1. Is moved toward the other side in the direction of the axis O1.

Further, at this time, the return spring 19 is contracted and deformed between the flange portion 14 a of the support shaft portion 14 and the bearing base 13. When the transfer of the printing layer to the outer peripheral surface of the cylinder W is completed, the return spring 19 is restored and deformed by the elastic repulsive force, and the support shaft portion 14 is restored and displaced together with the cylinder W.
In addition, in the longitudinal sectional view of the cylinder W, an angle formed between the outer peripheral surface of the cylinder W and the axis O1 is, for example, about 1.5 °, and the axis O1 of the outer peripheral surface of the cylinder W to which the printing layer is transferred. The length in the direction may be about 70 mm, for example.

  In addition, when the radius on the outer peripheral surface of the cylinder W is not equal over the entire circumference, the radius of the outer peripheral surface of the cylinder W at the contact portion with which the stamp plate 12 contacts via the transfer film F is the cylinder. It fluctuates with the rotation of W around the axis O1. Then, following the change in the radius at the abutting portion of the cylindrical body W accompanying the rotation of the cylindrical body W about the axis O1, the oscillating body 17 is oscillated around the oscillating axis O2, and the urging means 15 expands and contracts.

  As described above, according to the method for manufacturing a decorative cylinder according to the present embodiment, the peripheral speed of the portion located on the other side of the axis O1 direction on the outer peripheral surface of the cylinder W is the direction of the axis O1. For example, a portion of the transfer film F located on the other side in the direction of the axis O1 on the outer peripheral surface of the cylinder W is caused by being larger than the peripheral speed of the portion located on one side of the cylinder. Even if the transfer film F is twisted by passing through the outer peripheral surface of the cylindrical body W more than the portion of the outer peripheral surface of the body W positioned on one side in the direction of the axis O1, the cylindrical body W In the process of transferring the printing layer to the outer peripheral surface of the sheet, the twisting can be eliminated by moving the cylinder W toward the other side in the direction of the axis O1, and the transfer film F is wrinkled. Can be prevented.

  Further, when the transfer of the printing layer to the outer peripheral surface of the cylindrical body W is completed, the return spring 19 is restored and deformed by the elastic repulsive force, thereby restoring and displacing the cylindrical body W. The decorative cylinder 1 can be quickly removed from the support means 11 and the axis of the next cylinder W relative to the support means 11 when the next cylinder W is mounted on the support means 11. The position in the O1 direction can be easily determined.

Further, in this embodiment, since the urging means 15 is provided, when the radius of the abutting portion of the cylinder W is reduced, the urging means 15 is reduced and the cylinder W is stamped. The urging means 15 is extended and the cylinder W is retracted from the stamp plate 12 when the radius advances at the abutting portion of the cylinder W. As a result, the pressing force of the stamp plate 12 against the cylinder W can always be kept substantially equal regardless of the variation of the radius at the contact portion of the cylinder W accompanying the rotation of the cylinder W around the axis O1. It becomes possible.
Therefore, even if the radius on the outer peripheral surface of the cylinder W is not equal over the entire circumference, the printing layer of the transfer film F can be transferred accurately and stably regardless of the position in the circumferential direction on the outer peripheral surface of the cylinder W. can do.

  Further, the urging unit 17 swings the swinging body 17 about the swinging axis O2 while following the change in radius at the contact portion of the cylindrical body W accompanying the rotation of the cylindrical body W about the axis O1. 15 can be expanded and contracted, for example, compared with a case where the urging means 15 is directly connected to the support means 11 and the like.

In the decorative cylinder 1 formed by the method for manufacturing a decorative cylinder according to this embodiment, the printing layer of the transfer film F is accurately transferred regardless of the position in the axis O1 direction on the outer peripheral surface of the cylinder W. The
Further, when the cross-sectional shape of the cylindrical body W is a quadrangular shape with an angle of about 90 °, the radius of curvature that protrudes toward the outside in the radial direction of the corner is preferably 10 mm or more, preferably When the thickness is 15 mm or more, the above-described effects are surely achieved.
In addition, when the cross-sectional view shape of the cylindrical body W is a square shape having five or more corners, the above-described effects can be reliably achieved even if the curvature radius of the corners is less than 10 mm.

  The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

For example, although the manufacturing apparatus 10 having the base portion 16 and the rocking body 17 is shown in the above embodiment, the manufacturing apparatus 10 that does not have the base portion 16 and the rocking body 17 may be adopted.
Further, instead of the embodiment, the biasing means 15 may be directly connected to the support means 11.
Further, the urging means 15 may urge the stamp plate 12 toward the cylinder W and support the stamp plate 12 so as to be movable backward. Further, the biasing means 15 is not limited to the coil spring and may be appropriately changed as long as the pressing force of the stamp plate 12 against the cylindrical body W can be kept almost equal at all times. For example, a servo mechanism may be employed instead of the coil spring, or a configuration having both a coil spring and a servo mechanism may be employed. In the latter case, the aforementioned pressing force (force for urging the cylinder W toward the stamp plate 12) can be controlled and adjusted with high accuracy.
Further, the biasing means 15 may not be provided.
Further, instead of the above embodiment, the printing layer may be transferred to the outer peripheral surface of the cylindrical body W while feeding and winding the transfer film F.
In addition, the concave and convex shapes corresponding to the characters, figures, symbols, or the like to be transferred to the outer peripheral surface of the cylindrical body W are engraved on the lower surface of the stamp plate 12, but instead, the lower surface of the stamp plate 12 is formed smoothly. On the other hand, you may employ | adopt the transfer film F by which the thing corresponding to the above-mentioned character, figure, or symbol is described in the printing layer.
Further, the stamp plate 12 may not be provided with a heating means.
Moreover, in the said embodiment, although hot stamping was shown as a manufacturing method of a decoration cylinder, you may change suitably not only in this.

In the above-described embodiment, the support shaft portion 14 is slidably disposed along the axial direction thereof. However, the present invention is not limited to this. For example, the entire support means 11 is slidably disposed. Alternatively, a configuration in which only the cylinder W supported by the support means 11 slides may be employed.
Further, in the process of transferring the printing layer to the outer peripheral surface of the cylinder W, the cylinder W may be moved to the other side in the direction of the axis O1 using a driving unit.
In the above embodiment, the cylindrical body W is mounted on the support means 11 so as to gradually decrease in diameter as it moves away from the bearing base 13 along the axis O1 direction. However, the cylindrical body W extends along the axis O1 direction. Thus, the support means 11 may be mounted in a posture in which the diameter gradually increases as the distance from the bearing base 13 increases.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Decorating cylinder 10 Manufacturing apparatus 11 Support means 12 Stamp plate 15 Energizing means 16 Base part 17 Oscillating body 19 Return spring F Transfer film O1 Axis O2 Oscillating axis W Cylindrical body

Claims (4)

Support means for rotatably supporting the cylindrical body about its axis;
Using a stamping plate that presses the outer peripheral surface of the cylindrical body,
While rotating the cylinder around its axis by the support means,
Transfer the transfer film having a transferable printing layer in a state of being pressed on the outer peripheral surface of the cylindrical body by the stamp plate,
A method for manufacturing a decorative cylinder, which manufactures a decorative cylinder by transferring the print layer to an outer peripheral surface of the cylinder,
The cylindrical body is formed in a tapered shape whose outer diameter is gradually expanded from one side in the axial direction toward the other side,
A method of manufacturing a decorative cylinder, wherein the cylinder is moved toward the other side in the axial direction in the process of transferring the print layer to the outer peripheral surface of the cylinder. It is a manufacturing method of the decoration cylinder of Claim 1,
A return spring that is expanded and contracted when the cylindrical body moves toward the other side in the axial direction;
When the transfer of the printing layer to the outer peripheral surface of the cylindrical body is completed, the return spring is restored and deformed by an elastic repulsive force, and the cylindrical body is restored and displaced. . It is a manufacturing method of the decoration cylinder of Claim 1 or 2,
The manufacturing apparatus is provided with elastic biasing means for biasing at least one of the cylindrical body and the stamp plate toward the other and supporting the other in a retractable manner,
The urging means is made to follow the fluctuation accompanying the rotation around the axis of the cylindrical body of the radius of the abutting portion where the stamp plate abuts via the transfer film, of the outer peripheral surface of the cylindrical body. A method for producing a decorative cylinder, which is expanded and contracted. It is a manufacturing method of the decoration cylinder of Claim 3,
In the manufacturing apparatus,
A base,
On the base part, a swinging body that is swingably supported around a swinging shaft and is equipped with the support means is provided,
The biasing means connects the base portion and the rocking body,
The support means and the biasing means are disposed separately on both sides of the swing shaft in a side view as viewed from the swing shaft direction,
The biasing means is expanded and contracted while swinging the swinging body around the swinging shaft so as to follow a change in radius at the contact portion of the cylindrical body as the cylindrical body rotates around the axis. The manufacturing method of the decorative cylinder characterized by the above-mentioned.

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