JP2002319480A - Processing equipment using heat roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent running loss in a heated object by making heat processing of a predetermined temperature from immediately after the starting of insertion of the object, by avoiding fall of the surface temperature of the heat roller at the time of insertion of the object. SOLUTION: A heat depriving means is provided, which deprives heat of the quantity which is equal to the quantity of heat in which the heated substance takes heat from the heat roller immediately after the object is attached to the heat roller, before the object is attached and conveyance is started. This heat depriving can avoid the fall of the surface temperature of the heat roller at the time of beginning of insertion of the object. Therefore, heat processing can be carried out at the predetermined temperature from immediately after start of the insertion, and the running loss in the heated substance can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus utilizing a heat roller.

[0002]

2. Description of the Related Art In order to heat-treat an object to be heated such as a web, a sheet, and a film using a rotating heat roller, for example, a processing device such as a calendar device, a hot stretching device, a laminating device, and a seasoning device. Well known as In all of these processing apparatuses, a heated object is conveyed while being brought into contact with a heat roller, and is processed by heat from the heat roller in the process.

Normally, in this type of processing apparatus, the heating roller is first heated to a predetermined temperature while rotating, and when the surface temperature of the heating roller is stabilized, the heating roller is transferred to the heating roller. , The thermal processing is started.

According to the thermal processing according to such a procedure, immediately after the heated body is started to be joined to the heat roller, the heat of the heated roller is taken away by the heated body. It will be lower. Therefore, in this type of ordinary processing apparatus, a temperature detecting device for detecting the surface temperature of the heat roller is prepared. When the temperature detecting device detects a decrease in the surface temperature of the heat roller due to the start of the contact conveyance of the object to be heated, the heat source of the heat roller is controlled in accordance with the detection and the surface temperature is returned to a predetermined value. I try to make it.

However, the object to be heated is continued to be transported even while the surface temperature returns to the predetermined value, so that the object to be heated transported during that time has not been thermally processed at the predetermined temperature. Therefore, the object to be heated conveyed during this time is wasted, and the object is lost. Therefore, in the thermal processing by such a procedure, occurrence of running loss cannot be avoided.

[0006]

SUMMARY OF THE INVENTION According to the present invention, in performing thermal processing on a heated object, the surface temperature of the heat roller is prevented from lowering at the beginning of the combined transport of the heated object, and immediately after the start of insertion of the combined transport. An object of the present invention is to enable thermal processing at a predetermined temperature, thereby preventing a running loss of a body to be heated.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a processing apparatus provided with a heat roller to which an object to be heated is affixed and conveyed, wherein the heating roller is attached to the heated roller before being affixed and conveyed. Immediately after the heated body is attached, a heat removing means is provided for removing from the heat roller a heat amount equivalent to the heat amount of the heated body from the heat roller.

[0008] Immediately after the object to be heated is brought into contact with the heat roller, the amount of heat removed by the object from the heat roller can be known in advance according to the object to be heated. If a heat amount equivalent to the heat removal is previously removed from the heat roller, the surface temperature of the heat roller, which has been heated up to the predetermined value up to that time, falls below the predetermined value due to the heat removal action. Then, the temperature detecting device is activated to increase the surface temperature to a predetermined value. The surface temperature value in this state is nothing but a predetermined surface temperature value at the time when the object to be heated is brought into contact with the heat roller without being corrected. Therefore, even if the object to be heated is brought into contact with the heat roller, the object to be heated is thermally processed at a predetermined temperature from the beginning.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. As the heat roller, a heat roller or the like using heat oil, heat resistance or the like as a heat source can be used. FIG. 5 shows an example. In the figure, 1 is a roller body, 2 and 3 are journals integrally attached to both sides thereof,
It is rotatably supported by a machine base 5 via a bearing 4. And it is rotationally driven by an external rotation mechanism. Reference numeral 6 denotes an induction heating mechanism, which comprises an iron core 7 and an induction coil 8 wound around the outer periphery thereof. The induction heating mechanism 6 is supported by a holder 9.

A jacket chamber 10 is provided inside the peripheral wall of the roller main body 1, and a gas-liquid two-phase heat medium is decompressed and sealed therein. Fixed shafts 11 and 12 are attached to each end of the holder 7. The fixed shafts 11 and 12 are inserted into the journals 2 and 3 and the bearings 13 and 14
Are supported rotatably with respect to the journals 2 and 3. Reference numeral 15 denotes a rotation preventing mechanism for fixing the fixed shaft 12 so as not to rotate with the rotation of the journal.

Reference numeral 16 denotes a temperature detector for detecting the temperature of the peripheral wall portion of the roller body 1, and a detection signal detected thereby is sent to a rotary transformer 18 via a lead 17. Then, the roller body 1 is rotated via the rotary transformer 18.
Taken out of the The extracted detection signal is sent to the temperature controller 19. Reference numeral 20 denotes an AC power supply, for example, a single-phase AC power supply, which is connected to a lead wire 22 of the induction coil 8 via a voltage regulator 21.

The temperature controller 19 compares the detection signal sent from the temperature detector 16 with a preset temperature set value, and outputs a signal based on the comparison result to the voltage regulator 21.
Send to As a result, the voltage supplied from the single-phase power supply 20 to the induction coil 8 is adjusted, and the heat generated by the induction coil 8 on the peripheral wall of the roller body 1 is controlled to a set value.

In FIGS. 1 and 3, reference numeral 25 denotes a heat removal mechanism. In this example, a gas such as air, nitrogen gas, or water mist, and a cooling gas lower than the surface temperature of a heat roller described later are sent. And a plurality of branch pipes 27 branched therefrom.
The branch pipe 27 is arranged along the axial direction of the heat roller 28 so as to face the peripheral wall of the heat roller 28.

The supply pipe 26 is connected to a supply source via a gas control device 29. The gas control device 29 is for controlling the flow rate, temperature, and the like of the cooling gas sent from the supply source, and the cooling gas controlled here is sent to the supply pipe 26. The heat roller 28 is the induction heat roller device shown in FIG.

In the mode of use shown in FIG. 1, a pair of heat rollers 28 are arranged in parallel as shown in FIG.
In this configuration, the object to be heated 30 is passed between the two heat rollers 28 to perform thermal processing. This is, for example, a processing example of hot rolling or laminating the body 30 to be heated. When the pair of heat rollers 28 are used in this way, the heat removal mechanism 25 is disposed on each of the heat rollers 28.

Prior to the start of thermal processing of the object 30 to be heated, the surface temperature of the heat roller 28 is first raised to a predetermined value. For this purpose, a predetermined temperature value is set in the temperature regulator 19, and a control signal corresponding to a difference between the predetermined temperature value and a value detected by the temperature detector 16 is given to the voltage regulator 21 as a control signal. Then, the voltage from the AC power supply 20 is applied to the induction coil 8 via the voltage regulator 21. As a result, the surface temperature of the roller body 1 is raised to a predetermined temperature.

In this state, the heat removal mechanism 25 is operated to blow the cooling gas from the branch pipe 27 toward the surface of the heat roller 28 (that is, the roller body 1), and the heat roller 2
8 is cooled. The cooling at this time is performed when the object 30 to be heated is thereafter passed between the heat rollers 28.
When the heat roller 28 is cooled by the heat removal effect of 0, the cooling is equivalent to the cooling.

The reduced temperature caused by cooling the heat roller 28 with the cooling gas supplied from the branch pipe 27 can be set in advance by the temperature, flow rate, etc. of the cooling gas. In addition, the temperature at which the surface of the heat roller 28 decreases when the object 30 is actually passed between the heat rollers 28 can be known in advance.
Therefore, it is easy to cool to a temperature corresponding to the previously known lowering temperature by blowing the cooling gas.

When the cooling gas is cooled to a predetermined temperature by spraying the cooling gas, the temperature detector 16 detects a temperature decrease caused by the cooling. Thereby, the temperature controller 19,
The voltage regulator 21 operates as described above, and the induction coil 8
To raise the surface temperature of the heat roller 28 to a preset temperature. Thus, preparation for thermal processing of the object to be heated 30 is completed.

After reaching this state, the object 30 to be heated is inserted between the heat rollers 28. Immediately thereafter or immediately before that, the supply of the cooling gas from the supply pipe 26 is stopped. The heat roller 28 is deprived of heat by the insertion of the object 30 to be heated.
5, the surface temperature of the heat roller 28 is heat-processed by the insertion of the heated object 30 so that the surface temperature thereof is set at the initially set temperature.

In other words, when the object to be heated 30 is inserted,
Instead of the heat load by the heat removal mechanism 25 before that. A heat load corresponding to this is applied from the object to be heated 30 to the heat roller 28. Therefore, the inserted heated body 30 is
From the beginning of the insertion, thermal processing is performed at a predetermined temperature set in advance, so that no running loss occurs.

FIG. 1 shows an example in which both heat rollers 28 are in contact with each other. FIGS. 3 and 4 show examples in which the heat rollers 28 are juxtaposed at a predetermined distance from each other. Such a configuration is used in a case where the heating target 30 is subjected to a hot stretching process.
0 is combined and transported. Even in this case, each heat roller 28
The heat removal mechanism 25 is attached to each. The heat removal of the heat roller 28 by the heat removal mechanism 25 prior to the start of the thermal processing of the object to be heated 30 is not different from the configuration shown in FIG.

In the above embodiment, the heat roller 2
It is not always necessary to blow the cooling gas over the entire length of the heating member 8 to remove the heat. For example, the heat may be removed only in a range corresponding to the width of the body 30 to be heated. For this purpose, a cock that can be opened and closed is installed in the branch pipe 27, and the heat removal length range may be set by opening and closing the cock.

Although the illustrated heat removal mechanism 25 is a mechanism for blowing a cooling gas, other heat removal mechanisms may be used instead. For example, the roller being cooled is replaced with a heat roller 2
8, the heat roller 28 may be configured to take heat away from the heat roller 28.

[0025]

As described above, according to the present invention, when the object to be heated is thermally processed using the heat roller, it is possible to avoid a decrease in the surface temperature of the heat roller at the beginning of the insertion of the object to be heated. Therefore, the heat processing can be performed at a predetermined temperature immediately after the start of the insertion of the object to be heated, thereby providing an effect of preventing a running loss of the object to be heated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a use mode of FIG. 1;

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing a use mode of FIG. 3;

FIG. 5 is a cross-sectional view showing an example of a heat roller and also showing a circuit diagram.

[Explanation of symbols]

 25 Heat removal mechanism 28 Heat roller 30 Heated body

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K058 AA03 AA04 BA18 CA12 CA61 DA21 3K059 AB18 AC33 AD02 AD15 CD15 CD73 4F203 AG01 DB02 DC15 DL07

Claims (1)

[Claims] In a processing apparatus using a heat roller, which is provided with a heat roller to which an object to be heated is attached and which is conveyed, the heating roller is attached to the heat roller before the object to be heated is attached to the heat roller. A heat roller utilizing processing apparatus comprising: a heat removing means for removing heat from the heat roller, the heat amount of which is equivalent to the heat amount of the heated body from the heat roller immediately after the heated body is attached.