JP7120788B2 - Foil transfer device and foil transfer method using roll stamping - Google Patents

Description

TECHNICAL FIELD The present invention relates to a foil transfer apparatus and a foil transfer method using a roll-shaped stamp for decorating, for example, the top surface of a product (transfer target) or other flat surface by transfer.

There is a method of decorating by transferring a transfer foil or a transfer pattern to an object to be transferred.
Patent document 1 discloses a method of transferring a flat transfer plate engraved with characters, symbols, figures, etc. (hereinafter referred to as characters, etc.) to a cylindrical transfer object via a transfer sheet on which a transfer foil is vapor-deposited. This is a rolling type foil transfer method in which transfer is performed on the side surface of the transferred material by pressing the transferred material against the outer peripheral surface while heating and rolling the transferred material along the transfer plate. It should be noted that similar transfer can be achieved by horizontally moving a flat plate-like transfer plate instead of rolling the object to be transferred.

Further, in Patent Document 2, a long belt-like transfer sheet for thermal transfer on which a transfer pattern consisting of characters and the like has already been vapor-deposited is conveyed from one end to a thermal transfer section, and the transfer pattern is transferred to a transfer receiving member set in the thermal transfer section. Transfer is performed by applying heat and pressure to the transfer surface with a silicon roller for thermal transfer.

Japanese Utility Model Laid-Open No. 5-35274 JP 2011-173274 A

By the way, FIG. 7 is a plan view of a conventional example of roll-shaped stamping previously filed by the applicant of the present application (Japanese Patent Application No. 2016-194834), and FIG. 8 is a schematic configuration diagram of a foil transfer device using this roll-shaped stamping. be.
This roll-shaped stamp 105 is a cylindrical stamp having an engraving portion 105a (in FIG. 7, a pattern in which star-shaped figures are arranged vertically and horizontally) consisting of letters or the like for transferring to a material to be transferred. A rubber 105B is fixed to the outer peripheral surface of a cylindrical rotor 105A.

A foil transfer device using a roll-shaped stamp includes a roll-shaped stamp 105, a heater 106 for heating the roll-shaped stamp 105, a rotating jig 108 for rotatably holding an object 109 to be transferred, and a roll-shaped stamp. 105 and a rotary movement jig 108 and provided to be able to travel; a winding motor 122 for intermittently winding the transfer sheet 104; and a back tension motor 121 capable of applying tension to the transfer sheet 104, and the roll-shaped marking 105 or the rotary movement jig 108 is positioned between the side surface of the transferred material 109 and the outer peripheral surface of the roll-shaped marking 105. While maintaining a constant contact pressure, it reciprocates in the directions approaching and separating from each other. It's becoming

However, the foil transfer device using the roll-shaped stamp configured as described above is capable of transferring onto the cylindrical or elliptical cylindrical side surface of the object 109 to be transferred, but the top surface of the object 109 to be transferred, etc. It was pointed out that transfer to a flat surface or other flat surface is unsuitable.

In order to solve the above-described problems in the prior art, the present invention provides a foil transfer device and a foil transfer method using a roll-shaped stamp that enables transfer to a flat surface such as the top surface of an object to be transferred or other flat surfaces. The task is to provide

Among the means for solving the above problems, the first main means of the present invention is
A roll-shaped stamp that is driven to rotate around its axis by fixing a cylindrical silicone rubber with an engraving on the surface to the outer periphery of a cylindrical rotating body, and a roll that rotates around the roll-shaped stamp. A heater for heating the imprint, a holding table for fixing the transferred material having a flat surface to be transferred , and a heater stretched between the unwinding reel and the take-up reel and between the roll-shaped imprint and the holding table. a long belt-shaped transfer sheet disposed in a rotatable manner, a winding motor that axially supports the take-up reel and intermittently winds the transfer sheet in the running direction, and a roll that is rotatably supported A moving mechanism mounted with a stamp and capable of moving in a horizontal direction along the surface of the transferred material and in a vertical direction orthogonal to the surface of the transferred material, and imparting tension to the transfer sheet in a direction opposite to the running direction. and a back tension motor,
It is characterized in that the unwinding reel is pivotally supported by the rotating shaft of the back tension motor via a clutch mechanism.
According to the first main means of the present invention, it is possible to achieve fine transfer with little transfer unevenness on the flat surface of the object to be transferred or other flat surfaces.
Also, it is possible to remove the slack that tends to occur in the transfer sheet in the apparatus during operation.

Another means of the present invention is that the heater is mounted on the moving mechanism in addition to the first main means .

The second main means of the present invention is
A foil transfer method using the foil transfer device according to any one of the above,
The take-up motor is set to a non-driving state to stop the running of the transfer sheet, and the back tension motor is driven to remove the slack that tends to occur in the transfer sheet, and at the initial position, roll-shaped marking is performed at a constant speed. A first step of uniformly heating with a heater while rotating ;
a second step of stopping the rotation of the roll-shaped stamp and positioning it at a predetermined initial rotation angle;
a third step of moving the moving mechanism in the vertical direction to a transfer start position where the roll-shaped stamp presses the object to be transferred, and sandwiching the transfer sheet therebetween;
a fourth step of moving the moving mechanism in the horizontal direction to roll the roll-shaped stamp to move it to the transfer end position on the transferred material, and transferring the transfer foil laminated on the transfer sheet to the surface of the transferred material; ,
a fifth step of moving the moving mechanism in the vertical direction to move the roll-shaped stamp to a pressure release position away from the object to be transferred to release the pressure contact;
and a sixth step of moving the moving mechanism in the horizontal direction to move the roll-shaped stamp from the pressure release position to the initial position, and setting the winding motor to a driving state to feed the transfer sheet in the running direction. It is said that
According to the second main means of the present invention, it is possible to continuously achieve fine transfer with little transfer unevenness onto the flat surface of the object to be transferred or other flat surfaces .

Another means of the present invention is that the second main means uses a servo motor capable of controlling the rotation angle of the rotary shaft for the roll-shaped stamping, and positions the initial rotation angle in the second step. is the addition of the means of
In the above means, by positioning the engraving of the silicon rubber and the surface to be transferred relative to each other, it is possible to always achieve accurate transfer to the surface to be transferred.

In the present invention, transfer can be performed on a flat surface such as the top surface of an object to be transferred, or on other flat surfaces.
In addition, by performing relative positioning between the engraving portion on the roll-shaped marking side and the transferred surface of the transfer-receiving material before transfer, the transfer to the transfer-receiving surface can always be performed accurately.

1 is an explanatory diagram showing a schematic configuration of a foil transfer device of the present invention; FIG. 1 is a perspective view showing a roll stamp used in a foil transfer device; FIG. FIG. 4 is an explanatory diagram showing initial setting as one step of the foil transfer method; FIG. 4 is an explanatory view showing a positioning step as one step of the foil transfer method subsequent to FIG. 3; FIG. 5 is an explanatory view showing a pressure contact step as one step of the foil transfer method subsequent to FIG. 4; FIG. 6 is an explanatory view showing a press release step as one step of the foil transfer method subsequent to FIG. 5; FIG. 10 is a front view showing a roll-shaped stamp used in a foil transfer device previously filed for patent by the applicant of the present application, as a conventional example. It is an explanatory view showing a schematic structure of a foil transfer device.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing a schematic configuration of a foil transfer device of the present invention, and FIG. 2 is a perspective view showing a roll-shaped stamp used in the foil transfer device.
In the following description, the surface of the material to be transferred 9 is, for example, a flat surface such as the top surface of a compact container, but is not limited to this and may be another flat surface.

As shown in FIG. 1, in the foil transfer device, a feed reel 1 is arranged on the upstream side of the left end of the drawing, and a take-up reel 2 is arranged on the downstream side of the right end of the drawing. The take-up reel 2 is supported by the rotating shaft of a take-up motor 22 , and a transfer sheet 4 is stretched between the feed reel 1 and the take-up reel 2 . By intermittently driving the take-up motor 22 in the forward direction, the transfer sheet 4 can be caused to travel from the upstream side to the downstream side in the traveling direction indicated by the arrow in the figure.
Between the supply reel 1 and the take-up reel 2, a plurality of guide members 3, such as guide rollers or guide posts, are arranged. is set to

Here, it is preferable that the unwinding reel 1 is axially supported by the rotating shaft of the back tension motor 21 via a clutch mechanism (not shown). When this configuration is employed, a predetermined tension (back tension) is applied to the transfer sheet 4 in the direction opposite to the running direction (upstream direction) through the clutch mechanism by driving the back tension motor 21 in reverse rotation. , it is possible to remove slack that tends to occur in the transfer sheet 4 .

The transfer sheet 4 is a long belt-shaped (also referred to as a tape) sheet in which a transfer foil made of metal foil or the like is laminated on a base film made of synthetic resin by vapor deposition or the like. It is wound around the reel 2 in multiple layers.

A roll-shaped marking 5 is provided between the left and right guide members 3a and 3b provided at the center of the foil transfer device, and a far-infrared heater 6, for example, is opposed to the roll-shaped marking 5. are placed. A holding table 8 is provided at a position facing the roll-shaped stamp 5 with the transfer sheet 4 interposed therebetween. It is fixed with 9a facing up.

As shown in FIG. 2, the roll-shaped marking 5 is a member in which a cylindrical silicon rubber 5B is fixed to the outer periphery of a cylindrical rotating body 5A. Engraved portions 5a (in FIG. 2, a pattern in which star-shaped figures are arranged vertically and horizontally) are engraved on the surface to be transferred onto the object 9 to be transferred.

The roll-shaped stamp 5 is rotated horizontally and vertically while the central axis of the rotating body 5A is supported by the rotating shaft of a servomotor (not shown) and mounted on a moving mechanism 7 composed of a mechanism (not shown). is set to be movable to The roll-shaped stamp 5 is configured to rotate at a constant speed when powered by a servomotor, so that the silicon rubber 5B is uniformly heated by the heater 6, and the temperature that tends to occur in the engraved portion 5a is reduced. It is possible to prevent unevenness and, in turn, suppress the occurrence of transfer unevenness. The servomotor and the moving mechanism 7 are connected to a controller (not shown), and the controller controls the start time and stop time of the rotation of the roll-shaped marking 5 according to the input from the program or the touch panel. It is possible to control the adjustment of the rotation angle and the like, and the moving mechanism 7 is also capable of executing a series of cycle steps to be described later.

Next, a foil transfer method using the foil transfer apparatus will be described with reference to FIGS. 3 to 6. FIG.
3 is an explanatory view showing initial setting as one step of the foil transfer method, FIG. 4 is an explanatory view showing a positioning step as one step of the foil transfer method following FIG. 3, and FIG. 5 is a foil transfer method following FIG. FIG. 6 is an explanatory view showing a pressure contact step as one step, and FIG. 6 is an explanatory view showing a pressure contact canceling step as one step of the foil transfer method following FIG. 3 to 6 show only a part of the structure in FIG. 1 (especially the roll-shaped stamp 5 and the material to be transferred 9), and other structures are omitted.

(1) First step (initial setting)
The transfer target 9 is fixed on the holding table 8, and the transfer target surface 9a of the transfer target 9 is exposed.
As shown by the solid line in FIG. 3, the moving mechanism 7 is in the upper first position (initial position) A, and the servo motor is driven to rotate the roll-shaped marking 5 at a constant speed while the silicon rubber 5B is moved to the heater. 6 (see FIG. 1) uniformly heats the engraving portion 5a, thereby preventing temperature unevenness that tends to occur in the engraving portion 5a.
The take-up motor 22 is in a non-driving state (stopped state), the back tension motor 21 is driven, the unwinding reel 1 is rotated in the direction opposite to the running direction, and the slack that tends to occur in the transfer sheet 4 is removed. has been removed.

(2) Second step (positioning step)
The second step is performed by turning on a start switch (not shown). Then, the controller controls the servo motor so that the engraving part 5a stops at a predetermined rotation stop position, and the rotation of the roll-shaped marking 5 is stopped. As a result, the roll-shaped stamp 5 is positioned relative to the transferred material 9, and the engraved portion 5a of the silicon rubber 5B is set at a predetermined start position (or initial rotation angle) facing the transferred surface 9a. becomes possible. The rotation of the roll-shaped marking 5 can be stopped by detecting a positioning portion provided on the roll-shaped marking 5 (for example, the bolt 5b shown in FIG. 2) by an external sensor in addition to the method of controlling the rotation angle by a servomotor. It may be a method of stopping by

(3) Third step (pressing step)
Next, as shown by solid lines in FIG. 4, the controller moves the moving mechanism 7 along the vertical direction from the first position (initial position) A to the second position (transfer start position) B in the direction of approaching the holding table. , the transfer sheet 4 is sandwiched between the transferred surface 9a of the transferred material 9 and the silicon cover 5B of the roll-shaped marking 5, and the transferred surface 9a of the transferred material 9 is pressed against the engraved portion 5a.

(4) Fourth step (transfer step)
5, the controller moves the moving mechanism 7 from the second position (transfer start position) B to the third position (transfer end position) C along the horizontal direction. At this time, the roll-shaped stamp 5 rolls according to the horizontal movement of the moving mechanism 7, so that the transfer foil laminated on the transfer sheet 4 is transferred to the transfer-receiving surface 9a of the transfer-receiving object 9, and to the roll-shaped stamp 5. It can be transferred (thermally transferred) just like the engraving portion 5a.

(5) Fifth step (pressure release step)
Next, as shown by solid lines in FIG. 6, the controller moves the moving mechanism 7 along the vertical direction from the third position (transfer end position) C to the fourth position ( Press release position) D to release the press contact by the roll-shaped marking 5 .

(6) Sixth step (preparatory step)
Next, the controller horizontally moves the moving mechanism 7 from the fourth position (press release position) D to the original first position (initial position) A. As shown in FIG. At this time, the controller drives the take-up motor 22 while applying tension to the transfer sheet 4 to rotate the take-up reel 2, feeds the transfer sheet 4 downstream in the traveling direction by a predetermined length, and starts the next transfer process. prepare.
After the transferred material 9 is taken out from the holding table 8 by an exchanging mechanism (not shown), the next new transferred material 9 is fixed on the holding table 8 .

By repeating the series of cycle steps (steps of A→B→C→D→A . It becomes possible.

Although the configuration and effects of the present invention have been described above along with the embodiments, the embodiments of the present invention are not limited to the above embodiments.

For example, in the above description, if the roll-shaped marking 5 and the heater 6 supported by the servomotor are integrally mounted on the moving mechanism 7, and the moving mechanism 7 is moved under the control of the controller. , the temperature unevenness that tends to occur in the engraving portion 5a of the roll-shaped stamp 5 can always be suppressed.

Further, in the above-described embodiment, the transfer is performed on the top surface of the transfer target 9 as an example of the transfer target surface 9a consisting of a flat surface. is of course.

INDUSTRIAL APPLICABILITY The present invention can be used in a wider range of applications in the field of transfer to a flat surface to be transferred.

1: Unwind reel 2: Take-up reel 3: Guide member 4: Transfer sheet 5: Roll-shaped stamp 5A: Rotating body 5B: Silicon rubber 5a: Engraved part 5b: Bolt 6: Heater 7: Moving mechanism 8: Holding table 9 : Transferred material 9a : Transferred surface 21 : Back tension motor 22 : Winding motor A : First position (initial position)
B: Second position (transcription start position)
C: Third position (transcription end position)
D: Fourth position (press release position)

Claims (4)

A roll-shaped stamp (5) that rotates around an axis by fixing a cylindrical silicon rubber (5B) having an engraving (5a) formed on the surface on the outer circumference of a cylindrical rotating body (5A); A heater (6) for heating the rotating roll-shaped marking (5) arranged oppositely around the roll-shaped marking (5) and a transfer-receiving object (9) having a flat transfer-receiving surface (9a) are fixed. a holding table (8);
A length stretched between the unwinding reel (1) and the take-up reel (2) and disposed between the roll-shaped stamp (5) and the holding table (8) so as to be able to travel. a strip-shaped transfer sheet (4);
a winding motor (22) that pivotally supports the winding reel (2) and intermittently winds the transfer sheet (4) in the running direction;
The roll-shaped stamp (5) rotatably supported is mounted, and the horizontal direction along the transferred surface (9a) of the transferred material (9) and the transferred surface (9a) of the transferred material (9) are mounted. ), and a moving mechanism (7) provided to be movable in a vertical direction perpendicular to the
a back tension motor (21) that applies tension to the transfer sheet (4) in a direction opposite to the running direction;
A foil transfer device using roll stamping, wherein the unwinding reel (1) is axially supported by the rotating shaft of the back tension motor (21) via a clutch mechanism. 2. A foil transfer apparatus according to claim 1, wherein the heater (6) is mounted on the moving mechanism (7). A foil transfer method using the foil transfer device according to claim 1 or 2,
The take-up motor (22) is set to a non-driving state to stop the running of the transfer sheet (4), and the back tension motor (21) is driven to remove slack that tends to occur in the transfer sheet (4). , a first step of uniformly heating with a heater (6) while rotating the roll-shaped stamp (5) at a constant speed at the initial position (A);
a second step of stopping the rotation of the roll-shaped stamp (5) and positioning it at a predetermined initial rotation angle;
The moving mechanism (7) is moved in the vertical direction to move the roll-shaped stamp (5) to the transfer start position (B) where the material to be transferred (9) is pressed, and the transfer sheet (4) is moved between them. a third step of sandwiching the
By moving the moving mechanism (7) in the horizontal direction, the roll-shaped marking (5) is rolled to move it to the transfer end position (C) on the transferred material (9), and the transfer sheet (4) is moved. A fourth step of transferring the transfer foil laminated to the transferred surface (9a) of the transferred object (9);
a fifth step of moving the moving mechanism (7) in the vertical direction to move the roll-shaped stamp (5) to a pressure contact release position (D) away from the transferred material (9) to release the pressure contact;
The moving mechanism (7) is moved horizontally to move the roll-shaped stamp (5) from the pressure release position (D) to the initial position (A), and the winding motor (22) is driven. and a sixth step of setting and sending the transfer sheet (4) in the running direction. 4. A foil transfer method according to claim 3, wherein a servomotor capable of controlling the rotation angle of the rotary shaft is used for the roll stamping (5), and the initial rotation angle is positioned in the second step.

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