JPH11286049A - Laminating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve thermal efficiency by reducing a start-up time until an elastic member being heated and reducing the temperature difference between a rod-shaped heater and the elastic member by installing a heat conducting pipe, the elastic member to be externally inserted into the heat conducting pipe, and the rod-shaped heater to be closely inserted into the heat conducting pipe on a pressing/heating roller. SOLUTION: A pressing/heating roller is equipped with a heat conducting pipe 23, an elastic member 24 to be externally inserted onto the 23, and a rod- shaped heater 26 which is closely inserted into the pipe 23 and has a heating wire 25. The heat conducting pipe 23 forms a metal having a large heat conductivity such as copper and aluminum into a thin wall, and the elastic member 24 uses, for example, silicone rubber baked on the pipe 23. The rod-shaped heater 26 inserts a coil-shaped heating wire 25, for example, into a stainless steel cylinder in a U-shape and packs an insulating material which has a large heat conductivity and heat resistance in the cylinder. As a result, heat from the heater 26 is transmitted promptly to the elastic member 24, and the temperature difference between the heater 26 and the elastic member 24 is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminating apparatus for coating sheet pieces such as restaurant menus and price cards.

[0002]

2. Description of the Related Art As shown in FIG. 6, a conventional laminating apparatus for tightly covering a menu of a restaurant, a piece of a price card, a business card, or the like with a laminated sheet of polyester, PET, etc. A pair of upper and lower pressing and heating rollers a, a and a pressing and heating roller a
And a rod-shaped quartz tube heater b for heating the heater, wherein the pressing and heating roller a is rotatable with respect to the quartz tube heater b provided in a stationary state. Then, a sheet piece f is arranged between a pair of upper and lower laminated sheets d, d on which an adhesive layer which is made adhesive by heating is laminated on the inner surface e side, and a pair of upper and lower pressing and heating rollers a, which are rotated. The sheet piece f was tightly covered with the plastic sheets d, d by feeding and pressing and heating.

[0003]

However, in the conventional laminating apparatus, heat is difficult to be transmitted due to the gap c between the quartz tube heater b and the pressing and heating roller a, and the pressure and the heating of the pressing and heating roller a until the predetermined temperature is reached. The workability is poor because the time is long (about 20 minutes).
There is a disadvantage that the thermal efficiency is poor because the temperature difference between the heater and the quartz tube heater b is large. In addition, since the heat from the quartz tube heater b is difficult to be transmitted to the pressing and heating roller a, it is difficult to adjust the temperature of the pressing and heating roller a, and heat unevenness occurs in which the pressing and heating roller a becomes higher or lower than a predetermined temperature. It was easy to do so, which sometimes caused uneven quality of the processed product.

Accordingly, an object of the present invention is to provide a laminating apparatus in which the thermal efficiency is improved, the work efficiency is improved, and the quality of a processed product is improved.

[0005]

In order to achieve the above-mentioned object, a laminating apparatus according to the present invention inserts a sheet piece between a pair of upper and lower laminated sheets having an adhesive layer laminated on an inner surface thereof. In a laminating apparatus that presses and heats by feeding between a pair of rotating upper and lower pressing and heating rollers, and that covers the sheet piece in close contact with a pair of laminated sheets, the pressing and heating roller has a heat conduction tube, An elastic member fitted externally to the heat conducting tube, and a rod-shaped heater closely inserted into the heat conducting tube are provided.

Further, the rod-shaped heater has a heating wire inside,
A pair of electrically conductive slip rings are provided at one end of the rod-shaped heater in an insulating manner, and two electric wires electrically connected to both ends of the heating wire and exposed from one end of the rod-shaped heater are connected to the pair of slip rings. Electrically connected and power ON
The contact terminals electrically connected to the switches to be turned off are disposed in contact with the pair of slip rings.

Further, a sheet piece is inserted between a pair of upper and lower laminated sheets having an adhesive layer laminated on an inner surface thereof, and is fed between a pair of rotating upper and lower pressing and heating rollers to be pressed and heated to thereby produce the sheet piece. In a laminating apparatus in which the upper pressing and heating roller is rotatably pivoted, a roller mounting movable member is provided, and the roller mounting movable member is constantly elastically pressed. A push rod and a cam for adjusting the distance between the pair of upper and lower pressing and heating rollers by raising and lowering the roller mounting movable member are provided, and a motor for rotating the cam is provided. Things.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIGS. 1 to 4 show an embodiment of a laminating apparatus according to the present invention. The laminating apparatus is provided on a pair of upper and lower pressing and heating rollers 1, 1 and downstream of the pressing and heating rollers 1, 1. A pair of upper and lower idler rollers 2 and a driving roller 3, a pair of left and right roller mounting movable members 4 and 4 for rotatably pivotally connecting the upper pressing and heating roller 1 and the idler roller 2, and a lower pressing and heating. A pair of left and right roller mounting fixing members 5 and 5 for rotatably pivoting the roller 1 and the driving roller 3 are provided.

Further, in the laminating apparatus according to the present invention, a resilient member for constantly resiliently pressing the roller mounting movable members 4, 4 is provided.
17 are provided, and push rods 19, 19 and cams 20, 20 for raising and lowering the roller mounting movable members 4, 4 to adjust the interval between the pair of upper and lower pressing and heating rollers 1, 1 are provided. , 20 are rotated.

More specifically, the pair of left and right roller mounting fixing members 5 and 5 are, for example, formed by arranging flat plate members in parallel with each other, and below the lower pressing and heating roller via a bearing or the like. 1 and both ends of the drive roller 3 are pivotally mounted, and a window 6 through which both ends of the upper pressing and heating roller 1 and the idling roller 2 are inserted is formed in the upper part.

The pair of right and left roller mounting movable members 4 and 4
It is provided along the outer surface side of the pair of left and right roller mounting and fixing members 5 and 5, and the windows 6 of the roller mounting and fixing members 5 and 5 are provided.
The both ends of the upper pressing and heating roller 1 and the idling roller 2 projecting from the shaft are rotatably supported via bearings and the like.

The vertical wall portion 8a and the upper wall portion 8b are provided between the roller mounting fixed member 5 and the roller mounting movable member 4.
A push rod mounting member 7 having a T-shape in side view and an L-shape in inverted shape in front view is interposed, and an upper end of a push rod 19 is mounted to a lower end of a vertical wall portion 8a.

Further, screw holes 13 are provided in front and rear portions of the upper wall portion 8b of the push rod mounting member 7, and bolt members 12, 12 are screwed into the screw holes 13, 13, respectively. The bolt member 12 has a male screw portion 14 screwed into the screw hole 13.
And a non-male thread portion 15 provided below the male thread portion 14, and an outer flange 16 provided between the male thread portion 14 and the non-male thread portion 15.

The resilient member 17 (for example, a coil spring) is provided between the outer flange portion 16 located below the upper wall portion 8b of the push rod mounting member 7 and the upper surface of the roller mounting movable member 4. The elastic member 17 constantly and elastically pushes down the roller mounting movable member 4. Note that the lower end of the resilient member 17 is fitted and fixed in a concave portion 18 formed on the upper surface of the roller mounting movable member 4. Also, by screwing the bolt member 12 forward and backward with respect to the screw hole 13,
The force by which the resilient member 17 pushes down the roller mounting movable member 4 can be finely adjusted.

Incidentally, the roller mounting movable member 4 is mounted along the outer surface of the push rod mounting member 7, and the roller mounting movable member 4 is
Is configured to be able to move up and down slightly.

Also, a pair of left and right cams 20, 20 provided as abutting members at the lower ends of the pair of right and left push rods 19, 19 are provided.
Are connected by a shaft 20a penetrating the left and right roller attachment fixing members 5, 5, and the shaft 20a is
It is connected to the motor 21 through the like. When the motor 21 is driven to rotate the shaft 20a, the pair of left and right cams 20 and 20 rotate synchronously, and the pair of right and left push rods 19 and 19 are connected to each other via the push rod mounting members 7, 7. The roller mounting movable members 4 and 4 are raised and lowered. That is, the upper pressing and heating roller 1 and the idling roller 2 move up and down horizontally with respect to the lower pressing and heating roller 1 and the driving roller 3.

Thus, as shown in FIGS. 1 and 2, the pressing and heating roller 1 is composed of a heat conducting tube 23, an elastic member 24 externally fitted to the heat conducting tube 23, and a tightly fitted state to the heat conducting tube 23. And a rod-shaped heater 26 having a heating wire 25 therein. Both ends of the heat conducting tube 23 are exposed so that the heat-conducting tube 23 has a portion to be attached to the roller-attachment fixing member 5 and the roller-attachment movable member 4. Have been.

The heat conducting tube 23 is made of a metal having a high heat conductivity such as copper or aluminum and has a thin wall (for example,
mm). Further, as the elastic member 24, for example, silicon rubber baked on the heat conduction tube 23 is used.

The rod-shaped heater 26 is formed, for example, by inserting a coil-shaped heating wire 25 (nichrome wire) into a U-shape inside a stainless steel cylinder, and having a large heat conductivity and heat resistance inside the cylinder. Is filled with the insulating material. This rod heater 26
Is in close contact with the inner peripheral surface of the heat conduction tube 23 without any gap.

Both ends of the heating wire 25 of the rod-shaped heater 26 are
One end of the rod-shaped heater 26 is electrically connected to two electric wires 27, 27, and one end of the rod-shaped heater 26 is provided with a pair of conductive slip rings 28, 28. The two electric wires 2 exposed from one end of the rod-shaped heater 26
7, 27 are electrically connected to the respective slip rings 28, 28.

That is, two electric wires are connected to one end of the heat conducting tube 23.
An insulating member 29 having a hole through which 27 and 27 are inserted is fitted, and an insulating holder 30 holding a pair of slip rings 28 and 28 in an insulating state is fixed to the insulating member 29. The other end of the heat conducting tube 23 of the upper pressing and heating roller 1 is covered with a lid member 31, and the other end of the heat conducting tube 23 of the lower pressing and heating roller 1 is directly or indirectly rotated by a rotational force. A transmission member 32 (for example, a pulley or a gear) is attached.

On one end side of each of the pair of upper and lower pressing and heating rollers 1 and 1, insulating covers 34 and 34 for covering the slip rings 28 and 28 and the insulating holder 30 are provided. Are provided so as not to rotate. At this time, the pair of upper and lower pressing and heating rollers 1, 1 is disposed so that the upper and lower insulating covers 34, 34 are alternately arranged on the left and right sides. The insulating covers 34 do not hinder each other.

Further, on the inner peripheral surface of the insulating cover 34,
A pair of contact terminals that contact a pair of slip rings 28, 28
35, 35 (for example, a metal brush) are attached, and the pair of contact terminals 35, 35
26 are electrically connected to a switch 36 for turning on / off the power supply.

As shown in FIG. 1, the upper and lower idling rollers 2 and the driving roller 3 each have a shaft portion 39 and an elastic member 40 externally fitted to the shaft portion 39. The lower pressing and heating roller 1 and the driving roller 3 are connected to the motor 41 via a rotating force transmitting member 45 such as a pulley or a gear rotated by the motor 41 and a rotating force transmitting member 32 such as a belt or a chain. , And the motor 41 rotates.

As shown in FIGS. 2 and 5, the laminating apparatus of the present invention includes a temperature control means for a pair of upper and lower pressing and heating rollers 1 and 1. Specifically, for example, the elastic members 24, 24 of the pair of upper and lower pressing and heating rollers 1, 1 are rotated.
Are provided with temperature detecting sensors 37, 37 which slide and rotate, and each elastic member 2 detected by each temperature detecting sensor 37, 37 is provided.
The surface temperatures of 4 and 24 are output to the control unit 38. The control unit 38 is configured to turn off the switches 36 and 36 when a temperature higher than the set temperature is detected, and to turn on the switches 36 and 36 when a temperature lower than the set temperature is detected. , 24 are controlled to maintain a predetermined temperature.

Next, the processing operation by the laminating apparatus of the present invention will be described. As shown in FIG. 1 and FIG.
The cams 20, 20 are rotated by driving 21 and the left and right roller mounting movable members 4, 4 are moved by a pair of left and right push rods 19, 19.
(For example, to the upper limit) to separate the upper and lower pressing and heating rollers 1 and 1 and to separate the upper and lower idling rollers 2 and the driving roller 3. Further, power is supplied to the rod-shaped heaters 26, 26 of the upper and lower pressing and heating rollers 1, 1 (switches 36, 36 are turned on) to heat the elastic members 24, 24 to a predetermined temperature. At this time, the cam is driven by the speed reducer 22 having a large reduction ratio.
Since the rollers 20 and 20 rotate slowly, the pressing and heating roller 1 and the idling roller 2 mounted on the roller mounting movable members 4 and 4 slowly rise.

Then, a pair of upper and lower laminated sheets in which an adhesive layer capable of obtaining adhesiveness by heating is laminated on the inner surface 42a side
The tips of 42 and 42 (polyester or the like) are arranged between a pair of upper and lower pressing and heating rollers 1 and 1, and the cams 20 and 20 are rotated again to slowly raise the upper pressing and heating roller 1 and the idle roller 2 to a predetermined height. The upper and lower pressing and heating rollers 1 and 1 sandwich the top ends of the upper and lower laminate sheets 42 and 42.

In addition, a potentiometer or a push rod
It is also possible to provide a scale or the like for measuring the ascending / descending degree of 19, or to visually measure the height positions of the upper pressing / heating roller 1 and the idling roller 2. Further, when the upper pressing / heating roller 1 and the idling roller 2 reach a predetermined height position, the motor 21 may be controlled to stop automatically, or may be stopped manually.

After that, the motor 41 is driven to rotate the lower pressing and heating roller 1 and the driving roller 3, so that the upper and lower laminate sheets 42, 42 and (between the pair of upper and lower pressing and heating rollers 1, 1 are rotated). The sheet piece 43 (which has been inserted into the sheet) is fed and pressed and heated. Then, the upper and lower laminate sheets 42, 42 that have passed between the upper and lower pressing and heating rollers 1, 1
The sheet piece 43 is fed between the idling roller 2 and the driving roller 3 on the downstream side and pressed, and is further sent to the downstream side. At this time, the upper pressing and heating roller 1 and the idler roller 2 rotate due to frictional resistance with the upper laminated sheet 42 fed. The sheet pieces 43 are sequentially fed from a guide plate 44 provided on the upstream side of the pressing and heating rollers 1 and 1.

In this manner, a continuous semi-finished product is formed by covering a plurality of sheet pieces 43 from above and below in close contact with the laminated sheets 42, 42.
The part between 43 ... is cut to form a product.

In the laminating apparatus according to the present invention, the pair of slip rings 28, 28 also rotates when the pressing and heating roller 1 rotates during the processing operation, but is provided on the inner peripheral surface of the insulating cover 34. Since the pair of slip rings 28, 28 are in sliding contact with the fixed contact terminals 35, 35, the current from the power source is reliably supplied to the heating wire 25, and the rod-shaped heater 26 heats while rotating. be able to.

Further, since the heat from the rod-shaped heater 26 is quickly transmitted to the elastic member 24 by the thin-walled heat-conducting tube 23 which is brought into close contact with the rod-shaped heater 26, it is necessary to heat the elastic member 24 to a predetermined temperature. The rise time is shortened to improve the work efficiency, and the temperature difference between the rod-shaped heater 26 and the elastic member 24 is reduced, so that the thermal efficiency is improved. Further, when the control unit 38 turns on and off the switch 36 in response to the temperature detected by the temperature detection sensor 37, the temperature of the elastic member 24 rapidly rises.
The temperature can be lowered to maintain the predetermined temperature. That is, the responsiveness to the switch ON / OFF is good, and unevenness of heat does not occur in the elastic member 24 (the temperature of the elastic member 24 does not excessively increase or decrease below a predetermined temperature).

The present invention is not limited to the above embodiment. For example, as shown in FIG. 1 and FIG. A plurality of guide rollers are rotatably provided between the roller 1 and the driving roller 3, and the tips of a pair of upper and lower laminate sheets 42, 42 sent from the upper and lower pressing and heating rollers 1, 1 are attached to a downstream idle roller. The guide may be guided horizontally to the positions of the drive roller 2 and the drive roller 3.

[0035]

Since the present invention is configured as described above, the following effects can be obtained.

According to the first aspect, the heat from the rod-shaped heater 26 is quickly transmitted to the elastic member 24, and the rise time until the elastic member 24 is heated to a predetermined temperature is greatly reduced. That is, since the operation can be started in a few minutes, the operation efficiency is improved.
Further, since the temperature difference between the rod-shaped heater 26 and the elastic member 24 is reduced, the thermal efficiency is improved and energy can be saved.

The heat from the rod-shaped heater 26 is transferred to the elastic member 24.
Therefore, temperature adjustment is easy, and the elastic member 24 can be easily maintained at a predetermined temperature. That is, since the elastic member 24 does not become too high or too low below the predetermined temperature, and heat unevenness does not occur, there is no unevenness in adhesion and adhesion of the upper and lower laminated sheets 42, 42 to the sheet piece 43. (Product) quality is stable and improved.

(According to claim 2), the rod-shaped heater 26 is rotated integrally with the heat conducting tube 23 and the elastic member 24, and
External power can be easily supplied to the rod-shaped heater 26.

(According to claim 3) Work ───, that is,
Upper and lower laminated sheets 42, 42 and the sheet pieces 43 between them
For the thickness of ───, a pair of upper and lower pressing and heating rollers 1
1 can be adjusted with high precision. In addition, when the distance between the rollers 1 and 1 is adjusted, an optimal resilient pressing force always acts on the work regardless of the size of the distance.
Therefore, it can be beautifully covered with the laminate sheets 42, 42 corresponding to the sheet pieces 43 of various thicknesses.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an embodiment of a laminating apparatus of the present invention.

FIG. 2 is a sectional front view of a main part.

FIG. 3 is a partial cross-sectional front view showing a mounting portion of a pressing and heating roller.

FIG. 4 is an operation explanatory view showing a vertically moving state of a roller mounting movable member.

FIG. 5 is a configuration explanatory view showing a temperature detection sensor and a control unit.

FIG. 6 is a sectional side view of a main part showing a conventional example.

[Explanation of symbols]

 1 Pressing and heating roller 4 Roller mounting movable member 17 Resilient member 19 Push rod 20 Cam 21 Motor 23 Heat conduction tube 24 Elastic member 25 Heating wire 26 Bar heater 27 Electric wire 28 Slip ring 35 Contact terminal 36 Switch 42 Laminate sheet 42a Inner surface 43 sheet Piece

Claims (3)

[Claims] 1. A sheet piece 43 is inserted between a pair of upper and lower laminated sheets 42, 42 having an adhesive layer laminated on an inner surface 42a side, and fed between a pair of rotating upper and lower pressing and heating rollers 1, 1. In a laminating apparatus that presses and heats and covers the sheet piece 43 with the pair of laminate sheets 42 and 42 in close contact with each other, the pressing and heating roller 1 is connected to the heat conduction tube 23 and the heat conduction tube 23. A laminating apparatus comprising: an elastic member (24) to be fitted; and a bar-shaped heater (26) inserted into the heat conducting tube (23) in a tight fit. 2. A rod-shaped heater 26 has a heating wire 25 therein.
A pair of conductive slip rings 2 is attached to one end of the rod-shaped heater 26.
8 and 28 are attached in an insulating manner, and two electric wires 27 and 27 electrically connected to both ends of the heating wire 25 and exposed from one end of the rod-shaped heater 26 are respectively connected to the pair of slip rings 28 and 28. 2. A laminating apparatus according to claim 1, wherein contact terminals electrically connected to a switch for electrically turning on and off the power supply are disposed in contact with the pair of slip rings. . 3. A sheet piece 43 is inserted between a pair of upper and lower laminated sheets 42, 42 having an adhesive layer laminated on the inner surface 42a side, and fed between a pair of rotating upper and lower pressing and heating rollers 1, 1. In a laminating apparatus that presses and heats the above-mentioned sheet piece 43 to be in close contact with the pair of laminating sheets 42, 42, a roller mounting movable member 4 in which the upper pressing and heating roller 1 is rotatably pivoted is provided. At the same time, a resilient member 17 for constantly and elastically pushing down the roller mounting movable member 4 is provided, and furthermore, the roller mounting movable member 4 is moved up and down to reduce the distance between the pair of upper and lower pressing and heating rollers 1, 1. A laminating apparatus comprising: a push rod 19 for adjustment; a cam 20; and a motor 21 for rotating the cam 20.