JP2013095117A - Laminator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a rising speed of lamination temperature and to stably maintain the lamination temperature without using a temperature detector.SOLUTION: A laminator includes a thermocompression bonding conveyance device 10 which performs thermocompression bonding one over the other of a laminate film 11 and a sheet 12 at least while conveying them, a control device 15 which controls the thermocompression bonding conveyance device 10, and an operation switch 16 supplying electric power from a power source 14 during operation. The thermocompression bonding conveyance device 10 has a plate-like heating body 2 with a PT thermistor built in at least one of press conveyance members 1 in a pair configuration, and the control device 15 includes a current detector 18 which detects a current value accompanying electric power supply to the PTC thermistor in operation, and a preheating completion determination part 15a which determines a preheating completion state in which a surface temperature of the press conveyance members 1 is high enough for lamination on condition that the current value detected by the current detector 18 increases up to a peak and then decreases to reach a prescribed value.

Description

  The present invention relates to a laminating apparatus for laminating and laminating a laminate film and a sheet coated with a heat-meltable adhesive, and more particularly to an improvement of a laminating apparatus in a mode of thermocompression bonding while transporting a laminate film and sheet.

Examples of conventional laminating apparatuses include those described in Patent Documents 1 and 2.
Patent Document 1 includes a heating heat source for heating a laminate film, and a pair of pressure rollers for pressing the heated laminate film and a paper sheet, and can detect the temperature of the heating heat source and the temperature of the laminate film. And a technology for controlling the temperature of the heating heat source based on the output of these sensors is disclosed.
Further, in Patent Document 2, a sheet-like article and a laminate film coated with a heat-meltable adhesive are overlapped and inserted between a pair of rollers having a heating means inside at least one of them, thereby being subjected to thermocompression bonding. A technique is disclosed in which the heat detection means detects that the heating roller is abnormally heated by the heat detection means, and the current of the heating means is interrupted in an integrally formed form.

Japanese Patent No. 3779014 (Embodiment of the Invention, FIGS. 4 to 7) Japanese Patent No. 2901228 (Example, FIG. 3)

However, in Patent Document 1, an infrared heater or a planar heat source is used as a heating heat source. However, a temperature control system for the heating heat source, specifically, a temperature detector for detecting temperature and the temperature detection. A temperature control device that controls the heating heat source based on the temperature information detected by the vessel is indispensable.
Further, even in Patent Document 2, since a far-infrared tube heater is used as the heating means, for example, a temperature control system (temperature detector, temperature control device) is indispensable for the heating means. There is a concern that the heating operation by the heating means may run away at the time of abnormality, and it is also necessary to take an abnormality countermeasure to detect the abnormality.

  The present invention has been made in view of the above viewpoints, and it is technically necessary to solve the problem of increasing the rising speed of the laminating temperature and maintaining the laminating temperature stably without using a temperature detector. Let it be an issue.

  The invention according to claim 1 is a laminating apparatus for laminating and laminating a laminate film and a sheet coated with a heat-meltable adhesive, wherein at least the laminating film and the sheet are thermocompression bonded while being conveyed. A pressure-bonding and conveying device; a control device that controls the thermo-compression-bonding and conveying device; and an operation switch that energizes power from a power source during operation of the thermo-compressing and conveying device and the control device. At least one of which is formed in a hollow roll shape and sandwiched and transported between the laminate film and the sheet, and is incorporated in a crimped transport member formed in a hollow roll shape among the paired crimped transport members; A plate-shaped heating body including a plate-shaped PTC thermistor, and the plate-shaped heating body which is disposed in contact with the hollow roll-shaped crimping conveyance member A heat transfer holding frame that is held and capable of transferring heat from the plate-like heating body to the pressure-conveying and conveying member, and the controller is configured to turn on the operation switch to turn on the plate-like heating body during operation. A current detector that detects a current value associated with energization of the PTC thermistor, and a current value detected by the current detector rises and then falls after a peak to reach a predetermined value. And a preheating completion determination unit that determines a preheating completion state in which a surface temperature of the pressure-conveying and conveying member by the plate-like heating body reaches a temperature at which lamination is possible.

The invention according to claim 2 is the laminating apparatus according to claim 1, wherein the control device displays preheating indicating that preheating is in progress until the preheating completion determination unit determines the preheating completion state. A laminating apparatus comprising a display.
The invention according to claim 3 is the laminating apparatus according to claim 1 or 2, wherein the control device controls a driving source to which a driving force capable of rotating in the forward and reverse directions is supplied to the paired crimping conveyance member, Until the preheating completion determination unit determines the preheating completion state, the laminating apparatus is provided with a drive control unit that reversely drives or stops the paired crimping conveyance member.
According to a fourth aspect of the present invention, in the laminating apparatus according to any one of the first to third aspects, when the control device turns off the operation switch, the plate-like heating body is interlocked with an off operation of the operation switch. A laminating apparatus comprising: a stop processing control unit that stops energization of a drive source after idly rotating the pressure-bonding conveyance member of the paired structure for a predetermined time after the energization to the PTC thermistor is interrupted It is.
According to a fifth aspect of the present invention, in the laminating apparatus according to any one of the first to fourth aspects, the control device has a current value detected by the current detector after determining the preheating completion state by the preheating completion determining unit. An automatic stop processing control unit that cuts off at least the energization of the plate-like heating body to the PTC thermistor among the energization of the plate-like heating body to the PTC thermistor and the energization of the drive source under the condition of lowering to a predetermined value. Is a laminating apparatus.
The invention according to claim 6 is the laminating apparatus according to any one of claims 1 to 5, wherein the control device controls a driving source to which a rotatable driving force is supplied to the paired crimping conveyance member, The laminating apparatus includes a drive switching unit that variably switches a rotation speed of the drive source.
The invention according to claim 7 is the laminating apparatus according to claim 6, wherein the control device has a thickness detector capable of detecting the thickness of the laminate film and sheet to be laminated, and the thickness by the thickness detector. Based on the information, the drive source is controlled by the drive switching unit so that the rotational speed of the drive source is slower when the thickness information is thicker than when the thickness information is thin.

According to the first aspect of the present invention, it is possible to increase the rising speed of the laminate temperature without using a temperature detector, and to stably maintain the laminate temperature.
According to the invention which concerns on Claim 2, it can be visually confirmed whether the lamination apparatus has reached the preheating completion state.
According to the invention which concerns on Claim 3, the malfunctioning of the lamination process before reaching a pre-heating completion state can be prevented effectively.
According to the invention of claim 4, when the operation is stopped, the heating state of the paired crimping conveyance member can be quickly air-cooled to effectively suppress the influence of the temperature rise on the surrounding environment.
According to the invention which concerns on Claim 5, in the situation where it is not necessary to drive | operate a laminating apparatus continuously, a laminating apparatus can be stopped effectively.
According to the invention which concerns on Claim 6, compared with the aspect which does not have this structure, the calorie | heat amount given to a lamination process target can be increased / decreased easily.
According to the invention which concerns on Claim 7, the lamination process with respect to the lamination process object from which thickness differs can be effectively implemented by supplying the heat amount suitable for the lamination process object from which thickness differs accurately.

It is explanatory drawing which shows the outline | summary of the laminating apparatus which concerns on embodiment to which this invention is applied. It is explanatory drawing which shows the principal part structure of the laminating apparatus which concerns on Embodiment 1. FIG. FIG. 3 is a cross-sectional explanatory view corresponding to the line III-III in FIG. 2. It is principal part cross-sectional explanatory drawing along the axial direction of the thermocompression-bonding conveyance roll used in Embodiment 1. FIG. (A) is the heater assembly used in Embodiment 1, (b) is a principal part exploded explanatory drawing of a heater assembly. It is explanatory drawing which shows an example of the resistance-temperature characteristic of the PTC thermistor used with a heater assembly. (A) is explanatory drawing which shows the heater assembly and heat transfer holding | maintenance frame used in Embodiment 1, (b) is explanatory drawing which shows the assembly | attachment state of both. It is explanatory drawing which shows the assembly | attachment state to the crimping | compression-conveying roll of the heater assembly which is the thermocompression-bonding conveying roll component used in Embodiment 1, and a heat transfer holding frame. It is. 3 is an explanatory diagram schematically showing a drive transmission system of the laminating apparatus according to Embodiment 1. FIG. It is explanatory drawing which shows an example of the rotation structure of the thermocompression conveyance roll used in Embodiment 1, and the electricity supply structure to a heater assembly. 3 is an explanatory diagram showing a control system of the laminating apparatus according to Embodiment 1. FIG. (A) shows an example of the operation panel used in Embodiment 1, (b) is explanatory drawing which shows the structural example of the control apparatus shown in FIG. (A) shows an example of the current detector used in Embodiment 1, (b) is explanatory drawing which shows the current-voltage characteristic of a current detector. (A) is explanatory drawing which shows typically an example of the support structure which can float the thermocompression-bonding conveyance roll, (b) is explanatory drawing which shows the operation principle typically. (A) is explanatory drawing which shows an example of the temperature control operation | movement of the lamination apparatus which concerns on a comparison form, (b) is explanatory drawing which shows the temperature control operation example of the lamination apparatus which concerns on Embodiment 1. FIG. FIG. 3 is an explanatory diagram showing each functional unit of a control system of the laminating apparatus according to the first embodiment. 3 is a timing chart illustrating an operation example of a control system of the laminating apparatus according to the first embodiment. 3 is a timing chart showing an operation mode of the laminating apparatus according to the first embodiment. (A) is a timing chart which shows the automatic stop process of the lamination apparatus which concerns on Embodiment 1, (b) is a timing chart which shows the abnormality detection process of the lamination apparatus which concerns on Embodiment 1. FIG. It is a flowchart which shows the self-holding circuit and stop sequence of the laminating apparatus which concern on Embodiment 1. FIG. 6 is an explanatory diagram showing a modified form of a control system of the laminating apparatus according to Embodiment 1. FIG. It is explanatory drawing which shows the outline | summary of the laminating apparatus which concerns on Embodiment 2. FIG. It is explanatory drawing which shows the outline | summary of the laminating apparatus which concerns on Embodiment 3. FIG.

Outline of Embodiment FIG. 1 shows an outline of an embodiment of a laminating apparatus to which the present invention is applied.
In the figure, a laminating apparatus is one in which a laminating film 11 and a sheet 12 to which a hot melt adhesive is applied are stacked and bonded together, and at least the laminating film 11 and the sheet 12 are stacked and conveyed while being thermocompression bonded. A thermocompression conveying device 10 for controlling, a control device 15 for controlling the thermocompression conveying device 10, and an operation switch 16 for energizing the thermocompression conveying device 10 and the control device 15 with power from the power supply 14 during operation. I have.

In this example, the thermocompression conveying device 10 includes a pair of pressure-conveying and conveying members 1 (for example, 1a and 1b), at least one of which is formed in a hollow roll shape and sandwiching and conveying the laminate film 11 and the sheet 12. A plate-like heating body 2 that is built in a pressure-bonding and conveying member 1 (1a, 1b in this example) formed in a hollow roll shape and includes a plate-like PTC thermistor, and the hollow roll-like shape A heat transfer holding frame which is disposed in contact with the pressure-conveying member 1 (1a, 1b in this example), holds the plate-like heating body 2 and can transmit heat from the plate-like heating body 2 to the pressure-conveying conveying member 1. 3.
Further, the control device 15 detects a current value that is detected by energizing the PTC thermistor of the plate heater 2 during operation by turning on the operation switch 16, and the current detector 18 detects the current value. The plate-like heating element 2 is used for pressure bonding under the condition that the current value I rises with a lapse of time t and reaches a predetermined value (preheating completion determination current) Iy after falling after a peak and passing through a peak. A preheating completion determination unit 15a that determines a preheating completion state in which the surface temperature of the conveying member 1 reaches a temperature at which lamination can be performed.

In such technical means, since the laminating apparatus of the present embodiment is intended for at least the one provided with the thermocompression conveying apparatus 10, an aspect in which the crimping conveying apparatus and the heating apparatus are provided separately (for example, a pair of inlets) A mode in which a heating device is provided as an independent element between the conveying member and the paired outlet conveying member is not included.
In the present embodiment, the thermocompression conveying device 10 only needs to include a paired crimping conveying member 1 (1a, 1b) in which at least one is formed in a hollow roll shape. Here, as the paired crimping conveyance member 1 (1a, 1b), both may be roll-shaped members, one is a hollow roll-shaped member, and the other is pressurized and arranged on the hollow roll-shaped member. Further, a pair of roll-shaped crimping conveyance members 1 may be arranged along the sheet conveyance direction, and the belt members are bridged between the respective roll-shaped crimping conveyance members 1. Alternatively, at least one of the upstream-side roll-shaped crimping conveyance member 1 may be a hollow roll-shaped member, and the plate-shaped heating body 2 may be incorporated. Note that this embodiment includes a mode in which the plate-like heating body 2 and the heat transfer holding frame 3 are incorporated only into either one of the paired crimping and conveying members 1 which are hollow roll-shaped members.

Furthermore, the thermocompression conveying device 10 may have at least one paired crimping conveying member 1 in which the plate-like heating body 2 and the heat transfer holding frame 3 are incorporated in at least one of them. From the standpoint of speeding up, the plate-like heating body 2 and the heat transfer holding frame 3 are incorporated in each of a plurality of pairs of crimping conveying members 1, and the thermocompression processing necessary for the laminating process in a plurality of stages. May be applied.
Furthermore, as a laminating apparatus, it is needless to say that elements other than the thermocompression conveying apparatus 10 may be added. For example, from the viewpoint of effectively avoiding generation of wrinkles in the laminated sheet 12, the thermocompression conveying device 10 is provided on the downstream side of the thermocompression conveying device 10 and passes through the thermocompression conveying device 10. Examples include a pair of conveyance members 13 that pull and convey a sheet 12 that is later laminated with a laminate film 11. Further, a guide member for guiding and conveying the laminate film 11 and the sheet 12 may be provided before and after the thermocompression conveying device 10 and the paired conveying member 13.

Further, the plate-like heating body 2 may be appropriately selected as long as it includes a plate-like PTC thermistor.
The plate-shaped heating element 2 may be configured to have a long plate-shaped PTC thermistor, but a plurality of relatively short PTC thermistors are used side by side in accordance with the size of use of the sheet 12 and the laminate film 11. This method is widely used.
Here, as a typical mode of the plate-like heating body 2, an electrode is provided on the front and back surfaces of the PTC thermistor so that current can be applied, and the PTC thermistor and the electrode are covered with an insulating cover to prevent leakage. Is mentioned.
Furthermore, the heat transfer holding frame 3 needs to have a holding function of the plate-like heating body 2 and a heat transfer function from the plate-like heating body 2.
The heat transfer holding frame 3 is preferably made of a metal having good heat transfer properties (for example, aluminum). In addition, in order to keep the holding function and heat transfer performance of the plate heating body 2 good, plate heating It is preferable that the body 2 is disposed in close contact with at least the heat generating surface.
Here, as a typical aspect of the heat transfer holding frame 3, a peripheral wall having a cylindrical housing space having a substantially rectangular cross section in which the plate-like heating body 2 is housed and facing at least the front and back surfaces of the plate-like heating body 2. A holding cylinder frame 5 whose portion is deformed to be elastically deformable, and protrudes outwardly from a part of the elastically deformable peripheral wall portion of the holding cylinder frame 5 so as to be elastically deformable. Examples include those having a heat transfer arm frame 6 in which the peripheral wall portion of the holding cylinder frame 5 is brought into close contact with the front and back surfaces of the plate-like heating body 2 while being elastically deformed and brought into contact.

Moreover, although the control apparatus 15 controls the thermocompression-bonding conveying apparatus 10, it is the crimping | compression-bonding conveyance member 1 and the plate-shaped heating body 2 of a pair structure as a control object.
Further, the current detector 18 may be appropriately selected as long as it detects a current value accompanying energization of the PTC thermistor. Of course, the current detector 18 directly detects the current value, for example, via a resistance value. It also includes those that indirectly detect current values.
Further, the preheating completion determination unit 15a uses the fact that the current value falls through a rising peak at the start of operation in accordance with the characteristics of the PTC thermistor, so that the surface temperature of the crimping conveyance member 1 reaches a preheating completion state. A value corresponding to the timing at which the amount of heat is supplied is selected in advance, and it may be determined based on whether or not this value has been reached.

As a preferable aspect of such a control device 15, a preheating indicator (not shown) for displaying that preheating is in progress until the preheating completion determination unit 15 a determines the preheating completion state is provided. The aspect which is mentioned is mentioned.
Here, the preheating indicator only needs to indicate that preheating is in progress so that it can be distinguished from the preheating completion state. For example, a display lamp that always lights when the preheating completion state is reached (corresponding to a “READY lamp”). During preheating, it may blink or be appropriately selected such as “Preheating”.
Further, as another preferable aspect of the control device 15, the drive source 17 to which a driving force capable of forward and reverse rotation is supplied to the paired crimping conveyance member 1 is controlled, and the preheating completion determination unit 15 a determines the preheating completion state. Until it determines, the aspect provided with the drive control part 15b which reversely drives or stops the paired crimping | compression-bonding conveyance member 1 is mentioned.
Thus, even if the user erroneously performs the laminating process during preheating by reversely rotating or stopping the paired crimping conveyance member 1, the laminate film 11 and the sheet 12 for the paired crimping conveyance member 1 Can be prevented. At this time, the reverse rotation speed is lower than the normal rotation speed.
Here, as another behavior of the paired crimping conveyance member 1 during preheating, there is a low speed positive rotation drive that makes the paired crimping conveyance member 1 slower than the normal forward rotation drive after the preheating is completed. With regard to this low-speed positive rotation drive, it is impossible to prevent the target of the laminating process from being drawn during preheating, but the pulling-in operation of the target of the laminating process becomes slow, and accordingly, a malfunction of the laminating process is easily noticed, and the paired crimping conveyance member 1 It is possible to effectively prevent the malfunction of the laminating process by performing the reverse discharge operation for rotating the reverse.

Further, as a preferred mode of the control device 15 at the time of operation stop, when the operation switch 16 is turned off, the energization to the PTC thermistor of the plate heater 2 is interrupted in conjunction with the operation of turning off the operation switch 16. An aspect may be provided that includes a stop processing control unit 15c that stops energization of the drive source 17 after the paired crimping conveyance member 1 is idly rotated for a predetermined time.
In this way, when the operation switch 16 is turned off, the time when the energization to the PTC thermistor is interrupted and the time when the drive source 17 is stopped are provided with a time difference, whereby the heating state of the paired crimping conveyance member 1 is set. It is possible to quickly cool the air. At this time, it is preferable to add a display so that it can be visually observed that the air is being cooled.
From the viewpoint of promptly performing the stop operation as the stop process control unit 15c, the power supply to the drive source 17 may be stopped immediately after the power supply to the PTC thermistor is cut off.
Furthermore, as another preferable aspect of the control device 15, under the condition that the current value detected by the current detector 18 after determining the preheating completion state by the preheating completion determination unit 15a is lowered to a predetermined value, the plate A mode including an automatic stop processing control unit 15d that cuts off at least the energization to the PTC thermistor of the plate-like heating body 2 among the energization of the PTC thermistor of the plate-like heating body 2 and the energization of the drive source 17 is exemplified.
This automatic stop function works in terms of power saving and safety when, for example, it is in an energized state when it is not used for a long time or when an abnormality such as disconnection of the PTC thermistor occurs.

Furthermore, as another preferable aspect of the control device 15, the driving source 17 to which a rotational driving force is supplied to the paired crimping conveyance member 1 is controlled, and the rotational speed by the driving source 17 is variably switched. A mode provided with switching part 15e is mentioned.
In this way, the amount of heat applied to the laminate processing object of the laminate film 11 and the sheet 12 can be increased or decreased by switching the rotation speed of the paired crimping conveyance member 1 by the drive switching unit 15e.
Here, variably switching the rotational speed by the drive source 17 includes not only an aspect of switching the rotational speed of the drive source 17 itself but also an aspect of changing a combination of drive transmission mechanisms (for example, changing a gear ratio), and further driving. It is also possible to change both the source 17 and the drive transmission mechanism.
In particular, in the aspect provided with the drive switching unit 15e, it is possible to construct an aspect that takes into account laminate processing objects having different thicknesses.
In this case, the control device 15 has a thickness detector (not shown) capable of detecting the thickness of the laminate processing object between the laminate film 11 and the sheet 12, and the thickness is determined based on the thickness information by the thickness detector. The drive switching unit 15e may control the drive source 17 so that the rotation speed of the drive source 17 is slower when the information is thicker than when the information is thin.
In this embodiment, the thickness detector may be appropriately selected as long as it can detect the thickness of the laminate processing target between the laminate film 11 and the sheet 12. For example, if the specification of the laminate film 11 is determined, the thickness of the sheet 12 is determined. May be detected only. In addition, regarding the thickness detection principle of the thickness detector, thickness information is detected directly or indirectly based on information that depends on the thickness of the object to be laminated (including sheet thickness as well as information such as basis weight and resistance). The method to do can be selected as appropriate.

Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.
Embodiment 1
-Laminator-
2 and 3 show Embodiment 1 of a laminating apparatus to which the present invention is applied.
In the figure, a laminating apparatus 20 includes a thermocompression conveying apparatus 21 that performs thermocompression bonding while laminating a laminate film 101 and a sheet 102 and a pair disposed on the downstream side of the thermocompression conveying apparatus 21 in the sheet conveying direction. It is configured to be supported by a support side plate 25 of the housing.
In the present embodiment, the thermocompression conveying device 21 is composed of a pair of thermocompression conveying rollers 30 (specifically, 30a and 30b).
The thermocompression-conveying roll 30 having a pair structure is formed in a hollow roll shape, and has a pairing-compressing conveyance roll 31 that sandwiches and conveys the laminate film 101 and the sheet 102, and a heater incorporated in the pressure-conveying roll 31. An assembly 40 and a heat transfer holding frame 50 that holds the heater assembly 40 and transmits heat from the heater assembly 40 to the pressurizing and conveying roll 31 are provided.

<Crimping conveyance roll>
In the present embodiment, as shown in FIG. 3, the paired crimping conveyance roll 31 has a hollow roll body 32 made of a metal (for example, aluminum) having a good heat transfer property, for example. An elastic layer 33 made of an elastic material (e.g., silicon rubber) is coated on the surface, both are pressed against each other by a biasing force of a biasing spring (not shown), and a predetermined nip area n is secured between the two. In this nip area n, the laminate film 101 and the sheet 102 are nipped and conveyed.

<Heater assembly>
Further, as shown in FIGS. 3 to 5, the heater assembly 40 includes plate-like PTC thermistors 41 (specifically 41 a to 41 e) arranged in the length direction as a plurality of (for example, five) heaters, Long plate-like electrodes 42 and 43 are arranged on the front and back surfaces of each PTC thermistor 41 via a conductive adhesive layer 44, and the whole is covered with an insulating cover 45 made of polyimide resin, for example. In FIG. 5, reference numeral 46 denotes an extraction terminal provided at the longitudinal end of each of the electrodes 42 and 43.
In the present embodiment, the insulating cover 45 is for avoiding a situation in which current leaks to the outside when a voltage is applied to the PTC thermistor 41 (41a to 41e). For example, the insulating cover 45 may be formed in a thin film shape. For example, it is preferable to wrap around several layers so as to obtain a desired insulating property.

<Electrical characteristics of PTC thermistor>
Here, the electrical characteristics of the PTC thermistor 41 will be briefly described.
This PTC thermistor (Positive Temperature Coefficient Thermistor) is a semiconductor ceramic mainly composed of barium titanate (BaTiO ₃ ), and the Curie temperature can be set arbitrarily depending on the material composition, and the electrical resistance increases rapidly from this temperature. It has properties.
That is, as shown in FIG. 6, the PTC thermistor 41 self-heats by Joule heat when a voltage is applied, and its resistance value increases logarithmically when the Curie temperature Tc is exceeded.
When the resistance value increases, the heat generation temperature decreases because the current decreases and the power is suppressed. And if resistance value falls, an electric current will increase, and since electric power will increase again, exothermic temperature will rise. By repeating this operation, it works as a constant temperature heating element having a self-temperature control function.
Since the Curie temperature Tc of the PTC thermistor 41 and the surface temperature of the heater assembly 40 do not always coincide with each other, it is preferable to confirm the relationship between the Curie temperature Tc of the PTC thermistor 41 and the surface temperature of the heater assembly 40 in advance.

<Heat transfer holding frame>
As shown in FIGS. 7A and 7B, the heat transfer holding frame 50 includes a holding cylinder frame 51 having a cylindrical housing space having a substantially rectangular cross section in which the plate-like heater assembly 40 is housed, and this holding. A heat transfer arm frame 55 that is provided integrally with the cylinder frame 51 and transmits heat from the heater assembly 40 to the pressure-conveying and conveying roll 31, and is made of, for example, extruded with a metal such as aluminum having good heat transfer and workability. Molded.
Here, the holding cylinder frame 51 has a peripheral wall portion 52 in which a cylindrical housing space having a substantially rectangular cross section is defined, and a cut 53 having a substantially circular cross section is formed in each inner corner portion of the peripheral wall portion 52. Due to the presence of the notches 53, the peripheral wall portions 52 are deformed so as to be elastically deformable. In particular, in this example, in a state before the heat transfer holding frame 50 is mounted in the crimping conveyance roll 31, the peripheral wall portions 52a corresponding to the front and back surfaces of the heater assembly 40 of the holding cylinder frame 51 are arranged substantially in parallel. On the other hand, the peripheral wall part 52b corresponding to the width direction of the substantially rectangular cross section of the heater assembly 40 of the holding cylinder frame 51 is disposed so as to be slightly curved.

The heat transfer arm frame 55 includes a protruding piece 56 that protrudes outwardly from the outer corner portion of the peripheral wall portion 52 of the holding cylinder frame 51 so as to be elastically deformable, and the heat transfer holding frame 50 is mounted in the crimping conveyance roll 31. In the state before being carried out, the protruding piece 56 is maintained in a curved shape so as to protrude outward from the circular locus s of the inner surface of the hollow portion 35 (see FIG. 8) of the pressure-conveying and conveying roll 31. A gap 57 is secured between the tips of 56 so that the protruding piece 56 can be elastically deformed along the circular locus s.
In the present embodiment, the protruding pieces 56 of the heat transfer arm frame 55 are arranged symmetrically with respect to the center line k in the width direction of the substantially rectangular cross section of the holding cylinder frame 51, and the holding cylinder frame 51 is They are arranged line-symmetrically (or point-symmetrically).

Furthermore, as shown in FIG. 7, the heater assembly 40 is inserted into the cylindrical housing space in the holding cylinder frame 51 of the heat transfer holding frame 50 as shown in FIG. The frame 50 is incorporated in the hollow portion 35 of the pressure-bonding conveyance roll 31.
At this time, the protruding piece 56 of the heat transfer arm frame 55 of the heat transfer holding frame 50 is elastically deformed in the direction of the arrow M along the circular trajectory s of the hollow portion 35 of the pressurizing and conveying roll 31, and the hollow portion of the pressurizing and conveying roll 31. 35 is arranged in contact with the inner surface.
In this state, the peripheral wall portion 52 a corresponding to the front and back surfaces of the heater assembly 40 in the peripheral wall portion 52 of the holding cylinder frame 51 of the heat transfer holding frame 50 is accompanied by elastic deformation of the protruding piece 56 of the heat transfer arm frame 55. It is pressed in the direction of the arrow P through the cut 53 and elastically deformed, and is closely arranged on the front and back surfaces of the heater assembly 40.
On the other hand, of the peripheral wall portion 52 of the holding cylinder frame 51 of the heat transfer holding frame 50, the peripheral wall portion 52b corresponding to the cross-sectional width direction of the heater assembly 40 is cut in accordance with the elastic deformation of the protruding piece 56 of the heat transfer arm frame 55. It is slightly elastically deformed toward the inner surface side of the hollow portion 35 of the pressure-conveying conveyance roll 31 through the 53 portion.
In this case, since the heater assembly 40 is elastically held by the peripheral wall portion 52a of the holding cylinder frame 51 of the heat transfer holding frame 50, the heater assembly 40 moves unnecessarily within the holding cylinder frame 51 of the heat transfer holding frame 50. There is no concern. Further, since the peripheral wall portion 52b of the holding cylinder frame 51 is elastically deformed in a direction away from both side wall portions of the heater assembly 40, the holding cylinder frame 51 applies an unnecessarily large load to both side wall portions of the heater assembly 40. There is no concern that the heater assembly 40 will be damaged.
In particular, when the width direction dimension of the outer surface of the insulating cover 45 of the heater assembly 40 is w and the width direction dimension of the cylindrical housing space of the holding cylinder frame 51 of the heat transfer holding frame 50 is m, Before assembling the heater assembly 40 and the heat transfer arm frame 55, if w≈m, both side portions in the cross-sectional width direction of the heater assembly 40 come into contact with the peripheral wall portion 52b of the holding cylinder frame 51. The frame 50 is positioned at a symmetrical position with respect to the center line k.

-Transport roll-
As shown in FIGS. 2 and 3, the paired transport rolls 22 (specifically 22 a and 22 b) have a hollow roll body 62 made of, for example, aluminum, and an elastic material (on the surface of the roll body 62 ( An elastic layer 63 made of, for example, silicon rubber) is coated and formed, and both are pressed against each other by a biasing force of a biasing spring (not shown) to secure a predetermined nip area n between the two. Thus, the laminate film 101 and the sheet 102 are nipped and conveyed.
Here, the distance x between the nip area n of the thermocompression conveying roll 30 and the nip area n of the conveying roll 22 of the thermocompression conveying apparatus 21 is set to be shorter than the minimum use size sheet 102, and A guide member 26 for guiding the laminated sheet 102 to the nip region n of the transport roll 22 is provided in the sheet transport path between the thermocompression transport roll 30 and the transport roll 22.

-Drive system-
In the present embodiment, as shown in FIGS. 2 and 9, the driving system of the laminating apparatus 20 directly transmits the driving force from the driving motor 70 to one of the rolls 22b of the pair of conveying rolls 22 to transmit the driving force. It transmits to one roll 30b of the thermocompression-bonding conveyance roll 30 of the thermocompression-bonding conveyance apparatus 21 via the gear train 86, and further, one drive transmission gear train 87 provided on the opposite side in the axial direction of the conveyance roll 22 is used. The driving force transmitted to the conveyance roll 22b is transmitted to the other conveyance roll 22a, and one thermocompression conveyance roll 30b is provided via a drive transmission gear train 88 provided on the opposite side of the thermocompression conveyance roll 30 in the axial direction. Is transmitted to the other thermo-compression conveying roll 30a.
Here, in FIG. 9, if the peripheral speed of the thermocompression-bonding transport roll 30 is v ₁ and the peripheral speed of the transport roll 22 is v ₂ , the drive transmission system is adjusted to satisfy the relationship of v ₂ > v ₁ slightly. The laminated sheet 102 that has passed through the thermocompression conveying roll 30 is pulled and conveyed to the conveying roll 22.

-Support structure and current-carrying structure of thermocompression-conveying roll-
For example, the support structure of the thermocompression carrying roll 30 of the thermocompression carrying apparatus 21 is as follows.
That is, as shown in FIGS. 2 and 10, the support structure of the thermocompression conveying roll 30 is provided with insulating support shafts 71 made of, for example, phenolic resin at both ends of the crimping conveyance roll 31. Is supported on the support side plate 25 via a bearing 72.
In addition, the energization structure of the thermocompression conveying roll 30 has a through hole 73 in the insulating support shaft 71, and a terminal 46 (or 43) of the electrode 42 (or 43) of the heater assembly 40 on one side of the through hole 73. 5), a conductive pipe 74 is provided on the other side of the through hole 73, and the terminal 46 and the conductive pipe 74 are connected by a connection wire 75, and one end of the conductive pipe 74 is provided. The conductive brush 77 is pressed only against the urging spring 78 as the energizing unit 76, and the voltage from the power source 80 (in this example, the AC bias from the AC power source 82) is applied to the conductive brush 77 to turn on / off the operation switch 85. It is applied by operation. Note that the power supply 80 is not necessarily limited to an aspect using an AC bias, and may be an aspect using a DC bias or an AC bias superimposed with a DC bias.

-Control system for laminating machine-
FIG. 11 is an explanatory diagram schematically showing a control system of the laminating apparatus according to the first embodiment.
In the figure, reference numeral 120 denotes a drive motor 70 for driving the laminating apparatus 20 and a control device for controlling energization to the heater assembly 40. The drive motor 70 is driven based on a control signal from the control apparatus 120, The driving force from the drive motor 70 is transmitted to the thermocompression conveying roll 30 through a drive transmission system 90 schematically shown. When the operation switch 85 is turned on, the voltage from the power supply 80 is applied to the PTC thermistor 41 as each heater of the heater assembly 40 through the above-described energization structure, and the PTC thermistor 41 is energized.
In this example, the operation switch 85 energizes each circuit of the control board 121 (see FIG. 12) in response to turning on an operation switch (not shown), and energizes the heater relay coil 85a accordingly. By energizing the heater relay coil 85a, the heater relay contact piece 85b is moved to the ON contact, and the energized state of the heater assembly 40 is maintained.
Since energization to each circuit of the control board 121 is held by the self-holding circuit, the ON state of the operation switch 85 is maintained.
Further, a current sensor 130 is provided in the energization circuit to the heater assembly 40, and the current flowing to the heater assembly 40 is detected, and the detection output of the current sensor 130 is taken into the control device 120.
Furthermore, in this example, the thermocompression conveying roll 30 is provided with a thickness sensor 140 for detecting the thickness of the laminate processing object to be conveyed, and the detection output of the thickness sensor 140 is taken into the control device 120. It is supposed to be.
Further, an operation panel (not shown) is connected to the control device 120, and a display device 160 for displaying various information is appropriately provided on the operation panel.

-Operation panel-
FIG. 12A shows a configuration example of an operation panel used in the present embodiment.
In the same figure, the operation panel 150 has an operation switch 152 for turning on / off the operation of the laminating apparatus 20, a speed change switch 153 for switching the rotation speed of the drive motor 70, and the drive motor 70 manually reversed on the operation plate 151. And a reverse switch 154 to be operated. The display 160 includes an operation lamp 161 that displays whether or not the laminating apparatus 20 is in an operating state, and a READY lamp 162 that displays whether preheating is completed after the laminating apparatus 20 turns on the operation switch 152. A speed indicator 163 composed of, for example, seven display segments for displaying a plurality of speeds (for example, five levels) according to switching by the speed changeover switch 153 is used.

-Configuration example of control device-
FIG. 12B shows a configuration example of the control device 120 used in the embodiment.
In the figure, the control device 120 includes a power switch 155 for turning on / off the power supply 80, a power transformer 156, an operation switch 152 for turning on / off to start / stop operation, and the speed of the drive motor 70, for example, 500 mm / min. ˜1,500 mm / min. A control board into which each input signal from a motor rotation detector 157 for detecting the operating state of the drive motor 70 is detected. The control board 121 includes a current fuse 122, a self-holding relay 123, an operation switch 85 including a heater relay, a current sensor (abbreviation of CT: Current Transformer) 130, a CPU 124, and a motor drive circuit 125. The control signal from the control board 121 is sent to the temperature fuse 165, the PTC thermistor 41, the display 160, the drive motor 70, and the like.

-Current sensor-
In the present embodiment, for example, as shown in FIG. 13A, the current sensor 130 has a magnetic core 131 made of, for example, high permeability ferrite. winding the next winding 133, the current flowing through the primary winding 132 with connecting power source 80 to the primary winding 132 and I _1, whereas, the predetermined across the secondary winding 133 It has a configuration for taking out a voltage V ₂ by interposing the resistance R (e.g., 5 [Omega) of obtained values.
As shown in FIG. 13B, the current sensor 130 has a characteristic that is approximately proportional to the current I ₁ and the voltage V _2. For example, the current sensor 130 is monitored by monitoring the voltage V _2. and detects the current I _1.

-Thickness sensor-
In the present embodiment, the thickness sensor 140 supports one thermocompression-conveying roll 30a of the pair of thermocompression-conveying rolls 30 in a floatable manner, so that laminates having different thicknesses between the thermocompression-conveying rolls 30 of the pairing are provided. When the processing target (laminate film 101 + sheet 102) passes, the floatable thermocompression transporting roll 30a floats according to the thickness of the laminating process target, and is distorted according to the floating amount of the thermocompression transporting roll 30a, for example. What deform | transforms and detects the thickness information of the lamination process object based on the distortion deformation amount is used.
Here, as a structure for supporting the thermocompression conveying roll 30a in a floating manner, for example, as shown in FIGS. 14A and 14B, insulating support shafts 71 are supported at both ends of the thermocompression conveying roll 30a. The bearing 72 is urged and supported by the urging spring 172 so as to float, and the relative positional relationship between the insulating support shaft 71 and the bearing 72 is determined by the urging force of the urging spring 78 that urges the conductive brush 77. A structure is adopted so as to hold it.

-Basic operation of laminating machine-
Next, the basic operation of the laminating apparatus according to this embodiment will be described.
First, before describing the basic operation of the laminating apparatus according to the present embodiment, the basic operation of the laminating apparatus according to the comparative embodiment will be described.
FIG. 15A shows an example of a laminating apparatus according to a comparative embodiment.
In the figure, a laminating apparatus 200 according to a comparative embodiment includes a pair of thermocompression conveying rolls 300 and a conveying roll 220 that pulls and conveys the laminated sheet 102 that has passed through the thermocompression conveying rolls 300. The pressure-conveying roll 300 includes, for example, a heat roll 302 such as a halogen lamp as a heat source in a pressure-conveying roll 301 having a hollow roll shape.
Then, in order to detect the surface temperature of the thermocompression conveying roll 300, contact type or non-contact type temperature sensors 311 and 312 are arranged facing the surface of the thermocompression conveying roll 300, and the temperature controller 320 is provided with a temperature sensor. The detection information from 311 and 312 is taken in, and the heat lamp 302 is on / off controlled by temperature controllers 331 and 332 such as bimetals.

In this comparison form, the temperature control system (temperature sensor, temperature controller, temperature control device) is indispensable, and the device configuration is complicated.
In particular, in the embodiment using the contact-type temperature sensor, since the thermocompression transport roll 300 is in contact with the thermocompression transport roll 300, the thermocompression transport roll 300 is easily damaged, and in some cases, the laminated sheet is also scratched. There is a fear.
In addition, since the temperature sensor is constantly in contact with the thermocompression conveying roll 300, it is likely to be deformed or disconnected, or to cause a failure.
Further, when used for a long period of time, there is a possibility that the heat-melt adhesive of the laminate film adheres to the thermocompression conveying roll 300 and accurate temperature detection cannot be performed.
On the other hand, in a mode in which a non-contact type temperature sensor (for example, an infrared sensor) is used, there is no problem like the contact type temperature sensor, but the non-contact type temperature sensor requires a combination with an amplifier. Not only is it expensive, but when dust adheres to the detection surface, accurate temperature detection is not possible, and it tends to shift to a temperature higher than the target laminating temperature, resulting in poor laminate finish, and jammed and laminated sheets There is a concern to break.
Further, since the heating by the heat lamp 302 is performed via the air layer in the thermocompression conveying roll 300, the rising speed is slow, and if the heat lamp 302 breaks down, it is heated to an abnormal temperature. It is necessary to take measures.
Furthermore, since the lamination temperature is adjusted by intermittent control of on / off by the temperature controller, it takes time to reach the lamination temperature after overheating and reach a stable temperature distribution, and there is a concern that the fever temperature fluctuates greatly.

On the other hand, in this embodiment, as shown in FIGS. 10 and 15B, when the operation switch 85 is turned on when the laminating apparatus 20 is used, the voltage composed of the AC bias of the DC superimposition from the power supply 80 becomes conductive. This is applied to the heater assembly 40 via the brush 77 and the conductive pipe 74.
Then, a current flows through each PTC thermistor 41 to generate heat, and heat from the heater assembly 40 mainly includes the peripheral wall portion 52a of the holding cylinder frame 51 of the heat transfer holding frame 50 made of a metal having a good heat transfer property, and heat transfer arms. It is efficiently transmitted to the crimping conveyance roll 31 through the frame 55.
At this time, the rising speed of the temperature Th of the heater assembly 40 using the PTC thermistor 41 is fast, and when the temperature reaches the Curie temperature Tc, the resistance value immediately increases, so that current does not flow easily and heat generation of the heater assembly 40 is suppressed. .
For this reason, the surface temperature Ts of the thermocompression conveyance roll 30 stably reaches a predetermined laminating temperature without overheating.
Thus, in this embodiment, the self-temperature control function of the heater assembly 40 using the PTC thermistor 41 without using the temperature control system (temperature sensor, temperature regulator, temperature control device) as in the comparative embodiment. It can be easily controlled based on
Further, since the PTC thermistor 41 generates heat over the entire surface, there is no concern that the heat generation distribution varies.
Furthermore, since the heater assembly 40 does not rise excessively, it is not necessary to consider the situation where the thermocompression carrying roll 30 abnormally rises in temperature, and it is not necessary to consider an abnormal measure as in the comparative embodiment.
In particular, in the present embodiment, since the paired thermocompression-conveying rolls 30 each have a heat source, the present invention is also effectively applied to an aspect in which the laminate film 101 is laminated and pasted on the front and back surfaces of the sheet 102.
Further, in the present embodiment, the heat transfer holding frame 50 is configured to transmit heat to substantially the entire area of the hollow portion 35 of the press-bonding / conveying roll 31, so that the surface temperature distribution of the entire peripheral surface of the thermo-compressing / conveying roll 30. Is kept substantially uniform.

-Various control processes by laminating machine-
Next, various control processes performed by the laminating apparatus 20 according to the present embodiment will be described.
FIG. 16 is a block diagram schematically showing various control processes by the laminating apparatus 20 according to the present embodiment.
(1) In the initial setting process 16 of the current and temperature, reference numeral 180 is to set the preheating completion determination current I _th, which will be described later, a current-temperature setting device for setting the set temperature of the PTC thermistor 41, for example, an operation panel By using 150 under specific conditions, data is written in a memory (not shown) of the control board 121.

(2) Preheating Completion Determination Processing As shown in FIGS. 16 and 17, when the operation switch 152 of the operation panel 150 is pressed down and turned on with the power switch 155 turned on, the operation switch 85 is turned on and the PTC of the heater assembly 40 is turned on. The thermistor 41 is energized.
At this time, the PTC thermistor 41 rises from its electrical characteristics and rises after the peak Ip and then falls to a predetermined threshold (preheating completion determination current) I _th (for example, 1.5 A). And then reaches a substantially constant value.
Along with such a change in current, the PTC thermistor 41 heats the thermocompression transport roll 30 (30a or 30b), so the surface temperature Ts of the thermocompression transport roll 30 gradually increases, and the preheating completion determination current at the time that led to the I _th reaches the lower limit value _{T 1} of the target control temperature of the thermocompression bonding transport roll 30 (e.g., 110 ° C.), then the upper limit value _{T 2} of the target control temperature of the thermocompression bonding transport roll 30 (e.g., 120 ° C.) To reach.
The upper limit value T ₂ of the target control temperature of the thermocompression bonding transport roll 30 is set depending on the set temperature of the PTC thermistor 41.
In particular, in this example, the READY lamp 162 is extinguished before the PTC thermistor 41 is energized, but the current value I flowing through the PTC thermistor 41 rises and changes after the PTC thermistor 41 is energized. during and are, as well, while and does not lead to completion of preheating determination current I _th in while changing fall is, READY lamp 162 is flashing. Then, PTC when the current value I flowing through the thermistor 41 reaches changed below the preheating complete determination current _{I th} by falling, keep the READY lamp 162 is turned on.
The operation lamp 161 is turned on when the operation switch 152 is turned on.

(3) As shown in the motor rotation control process 16 and 17 by the thickness sensor, the energization to the PTC thermistor 41 is started and the current value I reaches below the preheating complete determination current I _th, thermocompression transport the surface temperature Ts of the roll 30 reaches the lower limit value T ₁ of the target control temperature, leading to a state which can be subjected to laminate treatment as the laminator 20.
In this state, assuming that the thickness d to be laminated is d ₁ , d ₂ , d ₃ (d ₁ <d ₂ <d ₃ ), the detection output of the thickness sensor 140 is a speed setting device mounted on the control board 121. A control signal is sent to the drive motor 70 via 145.
First, the thickness d of the lamination target assuming a case of d _1, as shown in FIG. 17, and controls the drive time t of the drive motor 70 as drive time t of the driving motor 70 is short times t ₁ and controlling the rotational speed m of the drive motor 70 so that the rotational speed m of the drive motor 70 to a higher value m _1.
In this case, since the lamination process target is thin, even if the heat capacity of the lamination process target is small, the conveyance speed of the thermocompression conveyance roll 30 is increased, and the driving time t is shortened, the lamination process is performed well.
Next, the thickness d of the lamination target assuming a case of d _2, as shown in FIG. 17, the drive time t of the driving motor 70 of the drive motor 70 so that a long time t ₂ as compared with the t ₁ The drive time t is controlled, and the rotation speed m of the drive motor 70 is controlled so that the rotation speed m of the drive motor 70 is a value m ₂ lower than m ₁ .
In this case, since the lamination processed is thicker than the d _1, the heat capacity of the laminate processed is increased in comparison with the case of d _1, the conveying speed of the thermocompression bonding transport roll 30 Te late and extend the drive time t Thus, the laminating process is carried out satisfactorily.
Further, the thickness d of the lamination target assuming a case of d _3, as shown in FIG. 17, the drive time t of the driving motor 70 of the drive motor 70 so as to further be a long time t ₃ as compared to t ₂ The driving time t is controlled, and the rotational speed m of the driving motor 70 is controlled so that the rotational speed m of the driving motor 70 becomes a value m ₃ lower than m ₂ .
In this case, since the lamination target becomes thicker than that of d _2, the heat capacity of the laminate processed is further increased as compared with the case of d _3, the conveying speed of the thermocompression bonding transport roll 30 in the case of d ₂ The laminating process is satisfactorily performed by further delaying and further extending the driving time t.

-Operation mode-
FIG. 18 is a timing chart showing the operation state of each part of the laminating apparatus 20 in the operation mode.
Now, when the operation switch 152 is turned on, each circuit of the control board 121 is energized, so that the operation switch 85 is turned on when the heater relay is excited. In this state, the self-holding circuit 170 (see FIG. 16) keeps energization of each circuit of the control board 121, so that the operation switch 85 is kept on, and the PTC thermistor 41 as the heater of the heater assembly 40 is held. Continue to be energized.
Further, as described above, when the operation switch 152 is turned on, the operation lamp 161 continues to light both during preheating and after completion of preheating. On the other hand, the READY lamp 162 blinks during preheating, and the READY lamp 162 is turned on when preheating is completed. Therefore, whether or not the laminating apparatus 20 is preheating is determined by looking at the state of the READY lamp 162.
Furthermore, in this example, the drive motor 70 rotates in reverse during preheating and rotates at a low speed. Therefore, even if an object to be laminated is inserted into the laminating apparatus 20 during preheating, the object to be laminated is the thermocompression conveying roll 30. Is not accidentally drawn into.
Furthermore, after the preheating is completed, the drive motor 70 rotates forward at the set speed set by the speed indicator 163, so that the laminating process is performed quickly.
Furthermore, in the present embodiment, when a stop operation is performed in which the operation switch 152 is pushed down again, a stop sequence is performed and the operation of the laminating apparatus 20 is stopped. At this time, energization to the PTC thermistor 41 as a heater is released along with the stop operation, but in order to completely stop the laminating apparatus 20, a predetermined time (for example, 1 to 2 minutes) after the stop operation. The thermocompression carrying roll 30 or the like is idled to perform a cooling operation, and then the self-holding circuit is released and the stop sequence ends.

-Automatic stop processing-
In this automatic stop process, as shown in FIG. 19A, the laminating apparatus 20 is automatically stopped when the PTC thermistor 41 is energized and not used for a long time.
In this example, the criterion for non-use for a long time is, for example, a predetermined time t when the current value I accompanying energization of the PTC thermistor 41 is equal to or less than a predetermined threshold I _th ′ (for example, 0.5 A). Based on the condition that more than _w (for example, 10 minutes) has passed.
In this case, when the surface is not used for a long time, the surface temperature Ts of the thermocompression conveying roll 30 may reach a considerably high temperature _Tw (for example, 150 ° C.). When not in use, the self-holding circuit 170 for each circuit on the control board 121 is released to end the stop sequence.
-Anomaly detection processing-
In this abnormality detection process, as shown in FIG. 19 (b), for example, an abnormal situation such as disconnection of wiring to the PTC thermistor 41 is detected, and the laminating apparatus 20 is automatically stopped when the abnormal situation is detected.
In this example, the criterion for detecting an abnormal situation is that, for example, the wiring to the PTC thermistor 41 is disconnected and the current value I reaches a predetermined threshold value I _th ″ (for example, 0.3 A) or less. Based.
When an abnormal situation is detected in this way, the drive motor 70 is stopped, the energization of the PTC thermistor 41 is stopped, and an error is displayed on the display 160.
Here, for error display, for example, the operation lamp 161 and the READY lamp 162 are blinked, and E corresponding to the error character is displayed on the speed display 163. In this state, the self-holding circuit 170 is immediately released by depressing the operation switch 152, and the stop sequence ends. Then, the error is cleared by depressing the operation switch 152 again, and the re-operation of the laminating apparatus 20 is started.

-Self-holding circuit and stop sequence-
FIG. 20 is a timing chart showing the operating state of each part associated with the formation of the self-holding circuit.
In the figure, when the operation switch 152 is turned on, the self-holding relay is turned on and the self-holding relay power source is turned on to form a self-holding circuit.
Further, when the operation switch 152 is turned on during operation, a stop mode is entered, the power supply to the PTC thermistor 41 as a heater is turned off, the operation lamp 161 is blinked, and a predetermined time t _e (for example, 1 minute) ) Later, by turning off the self-holding relay, the self-holding by the self-holding relay power supply is turned off and the self-holding circuit is released.
Here, when the self-holding relay is off, it is necessary to lower the self-holding relay power supply below the relay operating voltage while the control board power supply is in the operating region.
Further, it is preferable to design the control board power supply so that the reset circuit when the operation switch 152 is on operates normally when the self-holding relay power supply is turned off.
In the present embodiment, a method using a self-holding circuit is adopted, but it goes without saying that the control board power supply may be turned on / off in conjunction with the on / off of the operation switch 152 without using this. is there.

◎ Deformation 1
In the present embodiment, a mode in which the motor rotation control by the thickness sensor 140 is implemented is disclosed. However, the present invention is not limited to this. For example, as shown in FIG. The laminate processing target selection switch 190 appropriately selects a plurality of laminate processing targets having different thicknesses and inputs them to the control device 120 so that the motor rotation control is executed for each laminate processing target having a different thickness. .

Embodiment 2
FIG. 22 shows an outline of Embodiment 2 of a laminating apparatus to which the present invention is applied.
In the figure, a laminating apparatus 20 is a thermocompression conveying apparatus 21 as a thermocompression conveying apparatus 21 (specifically, 30 (1), 30 (2), 30 (30 (1), 30 (2), 30 (3)). 3)) is arranged, and a pair of conveying rolls 22 on which the laminated sheet 102 is pulled and conveyed on the downstream side in the sheet conveying direction are arranged.
Here, each thermocompression conveying roll 30 is configured in the same manner as in the first embodiment, and a guide member 26 for guiding the laminated sheet 102 between each thermocompression conveying roll 30 and the conveying roll 22. Is provided as necessary. Components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted here.
According to the present embodiment, since a plurality of pairs of thermocompression-conveying rolls 30 are provided, the laminating process for the laminating film 101 and the sheet 102 can be divided and realized. The laminating process can be realized at a higher speed.

Embodiment 3
FIG. 23 shows an outline of Embodiment 3 of a laminating apparatus to which the present invention is applied.
In the same figure, the laminating apparatus 20 is different from the first and second embodiments, for example, each of which is formed in a hollow roll shape and has a paired upstream side pressure-conveying and conveying roll 91 (nipping and conveying the laminate film 101 and the sheet 102). Specifically, 91a, 91b) and a downstream-side pressure-conveying and conveying roll 92 (specifically, a pair of downstream-side pressure-conveying rolls that are provided on the downstream side and are formed in a roll shape and sandwich and convey the laminate film 101 and the sheet 102) 92a, 92b) and belt members 93 (specifically, 93a, 93b) made of polyimide resin or the like, which are stretched between the upstream and downstream crimping conveyance rolls 91, 92 of these pairs. For example, the heater assembly 40 is held via the heat transfer holding frame 50 on the upstream-side crimping conveyance roll 91 having a pair configuration.
In the present embodiment, the upstream side crimping conveyance roll 91 (91a, 91b) substantially functions as the thermocompression bonding conveyance roll 30, and the laminated sheet 102 that has passed through the upstream side crimping conveyance roll 91 (91a, 91b) is After being conveyed while being sandwiched between the belt members 93 (93a, 93b), the sheet is discharged through a downstream pressure-bonding conveying roll 92 (92a, 92b).
At this time, the laminating process by the upstream side pressurizing and conveying roll 91 (91a, 91b) is suitably performed in substantially the same manner as in the first embodiment.

  DESCRIPTION OF SYMBOLS 1 (1a, 1b) ... Crimp conveyance member, 2 ... Plate-shaped heating body, 3 ... Heat transfer holding frame, 5 ... Holding cylinder frame, 6 ... Heat transfer arm frame, 10 ... Thermo-compression conveyance apparatus, 11 ... Laminate film, DESCRIPTION OF SYMBOLS 12 ... Sheet | seat, 13 ... Conveyance member, 14 ... Power supply, 15 ... Control apparatus, 15a ... Preheating completion determination part, 15b ... Drive control part, 15c ... Stop process control part, 15d ... Automatic stop process control part, 15e ... Drive switching , 16 ... operation switch, 17 ... drive source, 18 ... current detector, I ... current value, t ... time, Iy ... preheating completion determination current

Claims (7)

A laminating apparatus for laminating and laminating a laminate film and a sheet coated with a hot-melt adhesive,
A thermocompression conveying device that performs thermocompression bonding while conveying at least the laminate film and the sheet;
A control device for controlling the thermocompression conveying device;
An operation switch for energizing power from a power source during operation for the thermocompression conveying device and the control device,
The thermocompression conveying device is
A pressure-sensitive conveying member having a pair structure in which at least one is formed in a hollow roll shape and sandwiches and conveys the laminate film and the sheet;
A plate-shaped heating body that is built in a pressure-conveying conveyance member formed in a hollow roll shape and includes a plate-shaped PTC thermistor, and
A heat transfer holding frame that is disposed in contact with the hollow roll-shaped crimping conveyance member and is capable of holding the plate-like heating body and transmitting heat from the plate-like heating body to the crimping conveyance member;
The controller is
A current detector that detects a current value associated with energization of the PTC thermistor of the plate-shaped heating element during operation by turning on the operation switch;
The surface temperature of the pressure-conveying conveyance member by the plate-like heating body under the condition that the current value detected by the current detector rises and changes after a peak and then falls and reaches a predetermined value. And a preheating completion determination unit that determines a preheating completion state that reaches a temperature at which lamination is possible. The laminating apparatus according to claim 1, wherein
The said control apparatus is provided with the preheating indicator which displays that it is preheating until the said preheating completion determination part determines the said preheating completion state, The lamination apparatus characterized by the above-mentioned. The laminating apparatus according to claim 1 or 2,
The controller is
Controlling the driving source to which a driving force capable of forward and reverse rotation is supplied to the paired crimping conveying member, and until the preheating completion determining unit determines the preheating completed state, the paired crimping is performed. A laminating apparatus comprising: a drive control unit that reversely drives or stops the conveying member. The laminating apparatus according to any one of claims 1 to 3,
When turning off the operation switch, the control device cuts off the power supply to the PTC thermistor of the plate-like heating body in conjunction with the turning-off operation of the operation switch, and then presses the pair structure for a predetermined time. A laminating apparatus comprising: a stop processing control unit that stops energization of a drive source after idly rotating a conveying member. The laminating apparatus according to any one of claims 1 to 4,
In the condition where the current value detected by the current detector after determining the preheating completion state by the preheating completion determination unit is lowered to a predetermined value, the control device supplies the PTC thermistor to the PTC thermistor. A laminating apparatus comprising an automatic stop processing control unit that cuts off at least energization to the PTC thermistor of the plate-like heating body among energization and energization to a drive source. The laminating apparatus according to any one of claims 1 to 5,
The control device includes a drive switching unit that controls a drive source to which a rotatable driving force is supplied to the pair of pressure-bonding and conveying members, and variably switches a rotation speed of the drive source. apparatus. The laminating apparatus according to claim 6, wherein
The control device has a thickness detector that can detect the thickness of a laminate film and a sheet to be laminated, and is driven based on thickness information from the thickness detector when the thickness information is thicker than when it is thin. A laminating apparatus, wherein a drive source is controlled by the drive switching unit so as to slow down a rotation speed by the source.

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