JPH08336949A - Transfer decoration method and apparatus therefor - Google Patents

Abstract

PURPOSE: To thermally transfer a pattern surely and correctly to a prescribed position of a work by eliminating the generation of the dislocation of the relative position of a transfer film to a plate-shaped work. CONSTITUTION: A plate shaped work W is supported from below, a transfer film M is supported in parallel with the upper surface of the work W, and heating rolls 3A, 3B are moved in the longitudinal direction of the film M while the upper surface of the work W is being pressed by the rolls 3A, 3B from above the film M so that the pattern of the film M is thermally transferred to a prescribed position on the upper surface of the work W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer makeup method and a transfer makeup apparatus for thermally transferring a pattern pattern adhered and formed on a transfer film to a plate-like work such as a building material.

[0002]

2. Description of the Related Art A conventional transfer makeup method of this type is shown in FIG.
As shown in FIG. 3, a drive roll 101 that feeds a plate-shaped work W in a predetermined direction (arrow X direction) and a heating roll 102 for the transfer film M are disposed in a fixed position above the drive roll 101. The transfer film M is heated by the heating roll 101 while rotating the work 101 and the heating roll 102 to feed the work W and the transfer film M in the same direction, and the pattern of the transfer film M is applied to the upper surface of the work W. Was transferred to.

[0003]

In the conventional transfer makeup method as described above, the driving roll 101 and the heating roll 102 are fixed at fixed positions, and the plate-like work W and the transfer film M are the same. Since the transfer operation is performed while feeding in the direction, unless the feeding speeds of the work W and the transfer film M are accurately and precisely synchronized, the transfer direction (longitudinal direction of the transfer film) between both W and M. There is a problem in that the transfer position and the attitude with respect to the work W are deviated, and a predetermined transfer makeup cannot be obtained.

The present invention has been made in view of the above circumstances, and a transfer makeup method capable of obtaining a reliable and appropriate transfer makeup by eliminating the relative displacement of the transfer film with respect to a plate-like work. It is intended to provide a transfer makeup device.

[0005]

In order to achieve the above object, in the transfer makeup method according to the invention of claim 1, a plate-like work is supported from below, while a transfer film is provided on the upper surface of the work. While being supported in parallel, the heating roll is moved in the longitudinal direction of the transfer film while being pressed against the transfer film from above the transfer film, whereby the pattern pattern of the film is thermally transferred to the top surface of the work. It is characterized by

Further, in the transfer makeup apparatus according to the second aspect of the present invention, the work supporting means for supporting the plate-like work from below, and the transfer film disposed above the work supporting means to transfer the transfer film to the upper surface of the work. A film support means for supporting the transfer film in a parallel state with respect to the transfer film, and a heating roll for the transfer film. And a roll running means for thermally transferring the pattern pattern of the film onto the upper surface of the work.

Further, in the transfer makeup apparatus, the tension between the transfer film supply roll and the winding roll of the transfer film is detected, and when the detected value is below a certain value. It is preferable that each roll is provided with a back tension applying means for applying a rotational force in the film winding direction.

Furthermore, in the transfer makeup apparatus, as described in claim 4, the roll running means grips the transfer film in the state in which the back tension is applied at the forward position after the transfer operation, and the supply roll. It is preferable to have a structure equipped with a cueing means for drawing out from.

[0009]

According to the present invention, by moving the heating roll from above the transfer film in the longitudinal direction of the transfer film while pressing it against the upper surface of the plate-like work in a fixed position, Since the pattern is heat-transferred onto the upper surface of the work, the heating roll is moved so that the positions of the work and the transfer film are fixed to each other. It is possible to prevent the occurrence of relative positional deviation in the. Therefore, it is possible to accurately transfer the pattern pattern to a predetermined position on the work by heat.

Here, when the back tension is applied to the transfer film as in the third aspect, even if the transferred film of the work has an uneven portion and the transferred film is deformed into an uneven shape. The back tension prevents the transfer film from slackening and rubbing against the work, thus preventing damage to the film. Furthermore, when the transfer film is grasped and drawn out each time the transfer operation is completed, as in claim 4, the film is not drawn out redundantly and does not meander, and the film has a required length. The transfer film can be updated and set in the transfer standby position in an appropriate state.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the outline of a transfer makeup apparatus to which a transfer makeup method according to an embodiment of the present invention is applied.

This transfer makeup apparatus, as shown in FIG.
Work supporting means 1 for supporting a plate-like work W such as a building material having a concave portion Wa and a convex portion Wb (FIG. 12) from below,
A film supporting means 2 arranged above the work supporting means 1 for supporting the transfer film M in a state parallel to the upper surface of the work W, and a plurality of film supporting means 2 for heating and pressing the transfer film M, For example, it has a pair of front and rear heating rolls 3A and 3B made of silicon rubber. While pressing these heating rolls 3A and 3B against the work W from above the film M, the longitudinal direction of the film, that is, the front-back direction (arrow a). , B direction) roll traveling means 4 capable of reciprocating
It has and.

A specific structure of the transfer makeup apparatus will be described with reference to FIGS. 2 to 5, reference numeral 11 stands upright on the base frame 12, and constitutes a conveyor frame that constitutes the work supporting means 1 together with a belt conveyor and the like, which will be described later, and 13 represents the width direction on the conveyor frame 11, that is,
A conveyor main body supported by rails 14 along the left-right direction (arrow c, d directions) via a sliding portion 15 (FIG. 8) so as to be displaceable in the width direction. Drive pulley 16 attached to each part
An endless belt 18 is hung between the driven pulley 17 and the driven pulley 17. Reference numeral 19 is a rotary drive device for the drive pulley 16, and together with the belt 18 and the like, constitutes a belt conveyor 20 that conveys the work W backward (direction of arrow b).

Reference numeral 21 denotes a work W on the belt conveyor 20.
A carry-in roller conveyor for taking in the work W, and a carry-out roller conveyor 22 for taking out the work W from the belt conveyor 20.

At the rear end of the belt conveyor 20, as shown in FIG. 7, a stopper member 23 pivotally supported along a horizontal plane and a tip of a piston rod 24a are attached to the stopper member 23. A work stopper mechanism 25 including a connected cylinder 24 is provided. That is, when the work W is conveyed to the predetermined position by the belt conveyor 20, the cylinder 24 operates and the stopper member 23 is rotationally displaced to the front side of the work W as shown by the phantom line in FIG. When the work W is stopped, the stopper member 23 is rotationally displaced to the return position as shown by the solid line.

As shown in FIG. 6, the conveyor frame 11 is provided with the belt conveyor 20 on both sides in the width direction.
The ball screw 26 provided along the width direction is used for the bearing 2
It is supported via 7, 27, and this ball screw 26
One end side of is connected to the motor 28. Numeral 29 is fixed to the lower side of the conveyor main body 13 so that the ball screw 2
6, which is a nut portion that is screwed into 6, and together with the ball screw 26, the motor 28, etc., the positioning mechanism 3 for the belt conveyor.
Configures 0. The positioning mechanism 30 is driven according to a detection signal of a photoelectric sensor (not shown) that detects an eye mark m1 (FIG. 11) printed along the widthwise edge of the transfer film M or the longitudinal direction. That is, the ball screw 2 is driven by the motor 28 according to the detection signal.
By driving 6 to rotate, the belt conveyor 20 itself can be displaced in the width direction via the nut portion 29.

A pusher mechanism 31 is attached to the conveyor main body 13 for positioning the work. As shown in FIG. 8, a cylinder fixed to one side portion of the conveyor main body 13 in the width direction via a bracket 32. 33, a pusher member 34 movably arranged on the belt conveyor 20 along the width direction and connected to the tip of the piston rod 33a of the cylinder 33, and the other end portion of the conveyor body 13 in the width direction. And a receiving member 35 fixed so as to face the pusher member 34. When the cylinder 33 is actuated to extend the piston rod 33a, the work W is displaced by the pusher member 34 in the direction of arrow d and hits the receiving member 35, and the belt conveyor 20
Positioned widthwise above.

Reference numeral 41 denotes an upper frame 42 extending in the front-rear direction.
And a frame body 43 for a bogie that is erected on the base frame 12, and a movable frame 43 is disposed above the frame body 41 so as to be vertically displaceable. Cylinders 44 and 44 are fixed to the movable frame 43 at the front and rear ends thereof, respectively, and the tips of the piston rods 44a and 44a are connected to the upper frame 42 of the bogie frame body 41. . Therefore, when the piston rod 44a of the cylinder 44 is extended, the movable frame 43 is displaced upward, and when the piston rod 44a is contracted, the movable frame 43 is displaced downward.

The film supporting means 2 is provided with the movable frame 43 and roll holders 45 and 46 fixed to the front and rear ends of the movable frame 43 in a suspended manner. The front roll holder 45 is provided with a supply roll 47 for the transfer film M, a pair of guide rolls 48, 48, and a tension detector 49 for the film M. Reference numeral 50 is a motor mounted on the roll holder 45, 51 is a clutch that is ON / OFF controlled by the output from the tension detector 49, and if the tension of the transfer film M is a certain value or less, the motor is The rotational force of 50 in the winding direction is transmitted to the supply roll 47 via the clutch 51 and the belt 52, and back tension is applied to the film M. The roll holder 46 on the rear side has a roll 53 for winding the transfer film M, and a pair of guide rolls 54, 5
4. Further, the tension detector 55 for the film M
And so on. Reference numeral 56 is a motor mounted on the roll holder 46, 57 is a clutch that is ON / OFF controlled by the output of the tension detector 55, and if the tension of the transfer film M is a certain value or less, the motor 56 The rotating force in the winding direction is transmitted to the winding roll 53 via the clutch 57 and the belt 58, and back tension is applied to the film M.
The tension detectors 49, 55, the motors 50, 56,
The back tension applying means 59 is constituted by the clutches 51, 57 and the like.

The roll traveling means 4 is provided with a traveling carriage 61 which is movable in the longitudinal direction of the transfer film M, a self-propelled motor 62 mounted on the carriage 61, and a downward installation on the carriage 61. A pair of front and rear cylinders 63A,
63B, and as shown in FIG. 9, the holder portions 64A of the heating rolls 3A and 3B are attached to the tip ends of the piston rods 63a of the cylinders 63A and 63B.
64B are connected to each other. 65A and 65B are temperature sensors for measuring the surface temperatures of the heating rolls 3A and 3B, respectively.

The pressing forces of the heating rolls 3A and 3B on the upper surface of the work W are different from each other. in this case,
The heating roll 3A on the front side has a relatively high hardness, for example, a hardness of 30 is used, and the heating roll 3 on the rear side is used.
B has a relatively small hardness, for example, 0 hardness is used.

As shown in FIG. 10, a rack portion 66 along the longitudinal direction of the transfer film M is provided on the upper frame 42 of the trolley frame body 41 with a bracket 67.
A pinion 68 meshing with the rack 66 is fixed to the rotary shaft 62a of the motor 62. 69 and 69 are guide strips fixed along the longitudinal direction at both ends of the carriage 61 in the width direction,
The rail portions 70, 70 fixed to the lower surface of the upper frame 42 along the longitudinal direction are slidably fitted. Reference numeral 71 denotes a shaft body supported on the carriage 61 via bearings 72, 72. A pinion 73 meshing with the rack portion 66 is fixed to one end side of the shaft body 71, and the shaft body 71 has The other end side is connected to an encoder 74 for detecting the traveling amount of the carriage. That is, when the pinion 68 is rotationally driven by the motor 62, the pinion 6
Due to the meshing relationship between the rack 8 and the rack portion 66, the carriage 61 can be run in the longitudinal direction. Further, at this time, since the pinion 73 rotates, the encoder 74 detects the traveling amount of the carriage 61.

As shown in FIG. 9, slide shifters 76A and 76B are fixed to the front and rear ends of the dolly 61 through brackets 75A and 75B, and these slide shifters 76A and 76B are provided on the lower end sides thereof. Linear shafts 78A, 78 having shaft blocks 77A, 77B
Each B is vertically movably fitted. The front shaft block 77A presses the transfer film M by its own weight on the front side of the heating roll 3A.
9A and a guide roll 80A set at a position higher than the pressing roll 79A on the front side are held. Also,
Also on the rear shaft block 77B, a pressure roll 79B that presses the transfer film M by its own weight on the rear side of the heating roll 3B, and a guide roll 80B that is set at a position higher on the rear side than the pressure roll 79B. Is held. The pressing rolls 79A and 79B are transfer films M
This is to prevent air bubbles from entering between the work W and the work W, and only the front pressure roll 79A may be used.

As shown in FIG. 9, on the front shaft block 77A, as shown in FIG. 9, a pair of movable and fixed heating rollers 3A and 3B sandwich a transfer film M every time the transfer operation is performed by advancing to a predetermined position. Clamp members 91A, 9
2A is provided. 93A is a predetermined eye mark m2 (see FIG.
This is a cylinder that drives the movable clamp member 91A when 1) is detected. The rear shaft block 77B is also provided with a pair of movable and fixed clamp members 91B and 92B and a cylinder 93B that drives the movable clamp member 91B, as in the above. The movable clamp members 91A, 91B, the fixed clamp members 92A,
92B and cylinders 93A and 93B, together with the above-mentioned sensors and the like, cueing means 9 for grasping and pulling out the transfer film M.
Make up 4.

Next, the operation of the transfer makeup apparatus having the above structure will be described. When the belt conveyer 20 is operated as the plate-like work W is taken in by the take-in roller conveyer 21, the work W becomes the belt conveyer 2
0 conveys in the direction of arrow b. At this time, if the work stopper mechanism 25 on the belt conveyor 20 side is operated, the work W hits the stopper member 23 of the stopper mechanism 25 at a predetermined carrying position and is positioned in the carrying direction. Further, when the pusher mechanism 31 is operated in this state, the pusher member 34 advances and presses the work W against the receiving member 35, so that the work W is positioned in the width direction on the belt conveyor 20.

Next, an eye mark m1 marked in the widthwise edge of the transfer film M or in the longitudinal direction of the film M is detected by a photoelectric sensor, and the conveyor positioning mechanism 30 is operated based on the detection signal. Then, since the belt conveyor 20 itself is displaced in the width direction, the work W is positioned in the width direction with respect to the transfer film M via the belt conveyor 20. Actually, the widthwise edges of the transfer film M are 2 mm.
Since it meanders with a certain width, it is better to match it with the position of the transfer pattern. As a result, the transfer pattern of the transfer film M accurately faces the predetermined portion of the upper surface of the work W, and the transfer position accuracy in the width direction is improved.

When the work W is carried into the belt conveyer 20, the piston rods 44a of the cylinders 44, 44 of the movable frame 43 are extended to displace the movable frame 43 upward, so that the transfer is performed. Since the film M is also displaced upward, the work W does not come into contact with the transfer film M at the time of loading, and therefore, the transfer pattern on the film M is prevented from being damaged.

When the work W is positioned on the belt conveyor 20 and a predetermined transfer is performed, the piston rods 44a of the cylinders 44, 44 are contracted to displace the movable frame 43 downward. As a result, the transfer film M is set on the work W and the expansion of the film M during the transfer operation is prevented.

After the transfer film M is set on the upper surface of the work W, the cylinder 63 of the carriage 61 is set.
A, 63B is operated to operate a pair of front and rear heating rolls 3A, 3
B is displaced downward, and the transfer film M is pressed against the work W. At this time, the tension detectors 49, 5
5, the tension of the transfer film M between the supply roll 47 and the winding roll 55 is detected. If the tension is below a certain value, the rolls 47, 5
Rotational force in the winding direction by the motors 50 and 56 is transmitted to the motor 5 via the clutches 51 and 57, respectively. As a result, even if the transfer film M after transfer is deformed in an uneven shape by the concave portions Wa and the convex portions Wb of the work W and tries to relax, the back tension causes the transfer film M to move.
Is not stretched and rubs against the work W side, and therefore, the transfer film M is prevented from being damaged.

While the heating rolls 3A and 3B are pressed against the work W via the transfer film M, the motor 62 of the traveling carriage 61 is operated, and the pinion 68 and the rack portion 66 are meshed with each other to operate as described above. The cart 61 is moved forward (direction of arrow a). At this time, since the transfer film M is heated by the heating rolls 3A and 3B, the pattern of the transfer film M is thermally transferred onto the upper surface of the work W. In this case, since the heating rolls 3A and 3B are moved in a state where the work W and the transfer film M are fixed to each other, the relative displacement between the work W and the transfer film M does not occur. The heat transfer can be accurately performed on a predetermined portion of the work W.

By the way, when only one heating roll is used, the pressing force of the heating roll is set so that a uniform and good transfer state can be obtained with respect to the concave portions Wa and the convex portions Wb of the work W. Have difficulty. For example, if the hardness of the heating roll is relatively large, it is difficult to flexibly press into the relatively deep recesses of the work W, and it is difficult to obtain a good transfer state. On the other hand, in the above embodiment, a pair of front and rear heating rolls 3A and 3B are used, the silicon rubber of the front heating roll 3A has a hardness of 30, and the silicon rubber of the rear heating roll 3B has a hardness of 0. Since the hardness is made different, the setting of the pressing force adapted to the concave portions Wa and the convex portions Wb of the work W becomes simple, and a uniform and good transfer state can be obtained. For example, since the heating roll 3A on the front side has a small flexibility, the heating roll 3A on the rear side can cope with the convex portion Wb and the relatively shallow recess Wa of the work W, and the flexibility of the heating roll 3B on the rear side is large. It will be possible to deal with Wa. The pressing force may be different by controlling the fluid pressure by the cylinders 63A and 63B.

The trolley 61 is run to heat the heating roll 3
When air bubbles enter between the transfer film M and the work W during the thermal transfer operation of A and 3B, the transfer film M is transferred.
However, if the pressing roll 79A is provided in front of the heating roll 3A on the front side as in the above embodiment, the intrusion of bubbles is prevented by the pressing action of the pressing roll 79A. As a result, the transfer film M is prevented from rising, and therefore transfer defects are reliably prevented.

Each time the carriage 61 moves forward and a predetermined transfer operation is completed, a predetermined eye mark m2 on the transfer film M is detected by the photoelectric sensor, and the front cylinder 93A of the indexing means 94 is detected by the detection signal. The movable clamp member 91A and the fixed clamp member 92 are activated.
While A holds the predetermined eye mark m2 of the transfer film M, the movable cylinder 91B and the fixed clamp member 92B hold the transfer film M by the operation of the rear cylinder 93B. In this state, the carriage 61 retracts in the direction of the arrow b, the transfer film M is pulled out from the supply roll 47, and the transfer film M
It will be updated by the pitch. At this time, since the back tension acts on the transfer film M, the transfer film M is not pulled out redundantly from the supply roll 47. Therefore, by the pulling-out operation, a new portion of the transfer film M can be properly set at a predetermined standby position.

[0034]

As described above, claim 1 and claim 2 are as follows.
According to the invention, since the plate-like work and the transfer film are fixed in position relative to each other, the heating roll is moved in the longitudinal direction of the transfer film so as to perform the heat transfer. There is no relative positional deviation in the longitudinal direction, etc., and therefore, the pattern can be accurately and surely thermally transferred to a predetermined portion of the work.

In particular, according to the third aspect of the present invention, when the transfer film is configured to be provided with back tension, when the transferred film is deformed into an uneven shape by the uneven portion of the work, this transfer film is formed. It does not loosen and rub against the work side, and the risk of damage to the transfer film can be eliminated.

Further, as described in claim 4, every time when the transfer operation by the forward movement of the roll running means is completed, the transfer film is held by the indexing means of the running means and the transfer film is retracted as the roll running means moves backward. By pulling out the transfer film, it is possible to accurately set the transfer film at the transfer standby position without redundantly pulling out the transfer film after the transfer.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a transfer makeup apparatus to which a transfer makeup method according to an embodiment of the present invention is applied.

FIG. 2 is a side view showing the same transfer makeup apparatus.

FIG. 3 is a plan view showing the same transfer makeup apparatus.

FIG. 4 is a view on arrow AA of FIG.

5 is a BB arrow view of FIG. 2. FIG.

FIG. 6 is an enlarged vertical sectional front view showing a belt conveyor positioning mechanism in the same transfer makeup apparatus.

FIG. 7 is an enlarged plan view showing a stopper mechanism for a work stopper in the same transfer makeup apparatus.

FIG. 8 is an enlarged front view showing a pusher mechanism in the transfer makeup apparatus.

FIG. 9 is an enlarged side view showing a roll running means in the same transfer makeup apparatus.

FIG. 10 is an enlarged front view showing the roll traveling means.

FIG. 11 is a plan view showing an eye mark of a transfer film.

FIG. 12 is a main part configuration diagram for explaining an outline of a thermal transfer operation for a work having a concave portion and a convex portion.

FIG. 13 is a configuration diagram schematically showing a conventional transfer makeup apparatus.

[Explanation of symbols]

 1 Work Supporting Means 2 Film Supporting Means 3A, 3B Heating Rolls 4 Roll Traveling Means 47 Supply Rolls 53 Winding Rolls 59 Back Tensioning Means 94 Head Search Means M Transfer Films W Work

Claims (4)

[Claims] 1. A plate-like work is supported from below, and a heating roll is pressed from above the transfer film onto the top surface of the work while the transfer film is supported parallel to the top surface of the work. A transfer makeup method characterized in that the pattern pattern of the film is thermally transferred onto the upper surface of the work by moving the film for transfer in the longitudinal direction while being performed. 2. Work supporting means for supporting a plate-like work from below, and film supporting means arranged above the work supporting means for supporting the transfer film in parallel with the upper surface of the work. A transfer roll having a heating roll for the transfer film, and moving the transfer roll in the longitudinal direction of the transfer film while pressing the heating roll from above the transfer film to the upper surface of the work to form the pattern of the film on the upper surface of the work. A transfer makeup apparatus, comprising: a roll running unit for thermally transferring the image onto the sheet. 3. The transfer makeup apparatus according to claim 2, wherein the tension between the supply roll and the winding roll of the transfer film is detected, and when the detected value is below a certain value, each of the above A transfer makeup apparatus including a back tension applying unit that applies a rotational force in a film winding direction to a roll. 4. The transfer cosmetic device according to claim 2, wherein the roll running means grips the transfer film in a state in which back tension is applied at a forward position after the thermal transfer operation and draws it from the supply roll. Transfer makeup device equipped with means.