JP4587595B2 - Heat roller processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing apparatus using a heat roller.
[0002]
[Prior art]
It is well known as a processing device such as a calender device, a heat stretching device, a laminating device, or a seasoning device for heat-treating a heated object such as a web, sheet, or film using a rotating heat roller. Yes. All of these processing apparatuses convey the heated object while being in contact with the heat roller, and are processed by the heat from the heat roller in the process.
[0003]
Normally, in this type of processing apparatus, while the heat roller is first rotated, the temperature of the heat roller is raised to a predetermined temperature, and when the surface temperature of the heat roller is stabilized, the attachment of the heated object to the heat roller is performed. Thermal processing is started by starting conveyance.
[0004]
By the way, according to the thermal processing according to such a procedure, immediately after the heated object starts to be attached to the heated roller, the surface temperature of the heated roller falls below a predetermined value because the heat of the heated roller is taken away by the heated object. End up. Therefore, in this normal type processing apparatus, a temperature detecting device for detecting the surface temperature of the heat roller is prepared. When this temperature detection device detects a decrease in the surface temperature of the heat roller accompanying the start of attachment conveyance of the heated object, the surface temperature is returned to a predetermined value by controlling the heat source of the heat roller according to the detection. I try to let them.
[0005]
However, since the object to be heated continues to be conveyed while the surface temperature returns to the predetermined value, the object to be heated conveyed during that time was not thermally processed at the predetermined temperature. For this reason, the heated object conveyed during this time is wasted, and that amount is lost. Therefore, the occurrence of running loss is inevitable in the thermal processing according to such a procedure.
[0006]
[Problems to be solved by the invention]
The present invention avoids a decrease in the surface temperature of the heat roller at the beginning of the bulk conveyance of the heated body, and enables thermal processing at a predetermined temperature immediately after the insertion of the bulk conveyance starts. Therefore, it aims at preventing the running loss of a to-be-heated body.
[0007]
[Means for Solving the Problems]
The present invention provides a heat roller utilization processing apparatus having a heat roller for conveying this by the object to be heated is spliced, the temperature controller to maintain the temperature of the heat roller at a predetermined temperature, the cooling to the heat roller A heat removal mechanism is provided for blowing heat from the heat roller to remove heat from the heat roller, and prior to attaching the object to be heated to the heat roller, the heat removal mechanism is operated to heat the heat roller heated to the predetermined temperature. When the heat to be deprived by the attachment of the heated body is taken and the heated body is attached to the heat roller, the operation of the heat removal mechanism is stopped and the temperature of the heat roller is set to the predetermined temperature. It is characterized by being made to maintain .
[0008]
Immediately after the object to be heated is attached to the heat roller, the amount of heat that the heat roller is deprived of by the object to be heated can be known in advance according to the object to be heated. When the amount of heat equivalent to the amount of heat removal is preliminarily deprived from the heat roller, the surface temperature of the heat roller that has been heated up to a predetermined value by that time is lowered from the predetermined value by this heat removal action. Therefore, the temperature detection device is activated to raise the surface temperature to a predetermined value. The surface temperature value in this state is nothing but the predetermined surface temperature value at the beginning when the object to be heated is brought into contact with the heat roller. Therefore, even if the object to be heated is brought into contact with the heat roller here, the object to be heated is thermally processed at a predetermined temperature from the beginning.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. As the heat roller, a heat oil, heat generation resistor, or the like as a heat source can be used, but the embodiment shown in the figure is a configuration using an induction heat generation roller. An example is shown in FIG. In the figure, 1 is a roller body, 2 and 3 are journals integrally attached to both sides thereof, and are rotatably supported by a machine base 5 via bearings 4. And it is rotationally driven by an external rotation mechanism. Reference numeral 6 denotes an induction heating mechanism, which includes 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.
[0010]
A jacket chamber 10 is provided inside the peripheral wall of the roller 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 are supported rotatably with respect to the journals 2 and 3 via bearings 13 and 14. Reference numeral 15 denotes a detent mechanism for fixing the fixed shaft 12 so as not to rotate due to the rotation of the journal.
[0011]
Reference numeral 16 denotes a temperature detector that detects the temperature of the peripheral wall portion of the roller body 1, and a detection signal detected thereby is sent to the rotary transformer 18 via the lead wire 17. Then, it is taken out of the roller body 1 through the rotary transformer 18. The extracted detection signal is sent to the temperature regulator 19. Reference numeral 20 denotes an AC power source, for example, a single-phase AC power source, which is connected to the lead wire 22 of the induction coil 8 via the voltage regulator 21.
[0012]
The temperature regulator 19 compares the detection signal sent from the temperature detector 16 with a preset temperature set value, and sends a signal based on the comparison result to the voltage regulator 21. As a result, the voltage supplied from the single-phase power supply 20 to the induction coil 8 is adjusted, and the heat generation temperature of the peripheral wall of the roller body 1 by the induction coil 8 is controlled to be a set value.
[0013]
1 and 3, reference numeral 25 denotes a heat removal mechanism. In this example, a supply pipe to which a gas such as air, nitrogen gas or water mist, or a cooling gas lower than the surface temperature of a heat roller, which will be described later, is sent. 26 and a plurality of branch pipes 27 branched from now. The branch pipes 27 are arranged side by side along the axial direction of the heat roller 28 so as to face the peripheral wall of the heat roller 28.
[0014]
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.
[0015]
The usage form shown in FIG. 1 is a configuration in which a pair of heat rollers 28 are arranged in parallel and are attached to each other as shown in FIG. . This is an example of processing in which the heated body 30 is hot-rolled or laminated, for example. Thus, when using a pair of heat roller 28, the heat removal mechanism 25 is arrange | positioned at each of the heat roller 28, respectively.
[0016]
Prior to the start of thermal processing of the heated body 30, the surface temperature of the heat roller 28 is first raised to a predetermined value. For this purpose, the temperature regulator 19 is set with a predetermined temperature value, and a control signal corresponding to the difference between the predetermined temperature value and the detected value 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 increased to a predetermined temperature.
[0017]
In this state, the heat removal mechanism 25 is operated to blow cooling gas from the branch pipe 27 toward the surface of the heat roller 28 (that is, the roller body 1), thereby cooling the surface of the heat roller 28. The cooling at this time is the cooling corresponding to the cooling when the heated roller 30 is cooled by the heat removal action of the heated member 30 when the heated member 30 is subsequently passed between the heated rollers 28. .
[0018]
The temperature drop caused by cooling the heat roller 28 with the cooling gas supplied from the branch pipe 27 can be set in advance according to the temperature, flow rate, etc. of the cooling gas. In addition, the temperature of the surface of the heat roller 28 when the heated body 30 is actually passed between the heat rollers 28 can be known in advance. Therefore, it is easy to cool by blowing the cooling gas to a temperature corresponding to the previously known lowering temperature.
[0019]
When the cooling gas is thus cooled to a predetermined temperature, the temperature detector 16 detects the temperature drop caused by the cooling gas. Thereby, the temperature regulator 19 and the voltage regulator 21 operate as described above, and the induction coil 8 is operated to raise the surface temperature of the heat roller 28 to a preset temperature. Thus, the preparation for the thermal processing of the heated body 30 is completed.
[0020]
After reaching this state, the heated body 30 is inserted between the two heat rollers 28. Immediately thereafter, or immediately before, 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 heated body 30, but since the heat load corresponding to the deprived heat was applied by the deprivation mechanism 25 before that, the heat roller 28 is inserted of the heated body 30. Therefore, the surface temperature is thermally processed according to the set temperature set at the beginning.
[0021]
In other words, when the heated object 30 is inserted, instead of the heat load by the heat removal mechanism 25 until then. A thermal load corresponding to this is applied from the heated body 30 to the heat roller 28. Therefore, the heated object 30 inserted is thermally processed at a predetermined temperature set in advance from the beginning of the insertion, and therefore no running loss occurs.
[0022]
The usage pattern shown in FIG. 1 is an example in which the two heat rollers 28 are attached to each other, but FIGS. 3 and 4 show examples in which they are arranged at a predetermined distance from each other. Such a configuration is used when the object to be heated 30 is subjected to hot stretching processing, and the object to be heated 30 is transported together between the two heat rollers 28. Even in this case, the heat removal mechanism 25 is attached to each heat roller 28. In addition, it is not different from the configuration shown in FIG. 1 that the heat roller 28 is deprived of heat by the heat deprivation mechanism 25 prior to the start of the thermal processing of the heated body 30.
[0023]
In the above embodiment, it is not always necessary to remove heat by blowing the cooling gas over the entire length of the heat roller 28, and for example, heat is taken only within a range corresponding to the width of the heated body 30. Also good. For this purpose, an openable / closable cock is installed in the branch pipe 27, and the heat removal length range is set by opening and closing the cock.
[0024]
The illustrated heat removal mechanism 25 is a mechanism for blowing cooling gas, but other heat removal mechanisms can be used instead. For example, a configuration in which heat is removed from the heat roller 28 by bringing a cooled roller into contact with the heat roller 28 may be employed.
[0025]
【The invention's effect】
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 insertion of the object to be heated. It becomes possible to perform heat processing at a predetermined temperature immediately after the start of insertion of the heating body, thereby producing an effect of preventing running loss of the heated body.
[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 usage mode of FIG. 1;
FIG. 3 is a perspective view showing another embodiment of the present invention.
4 is a perspective view showing a usage mode of FIG. 3; FIG.
FIG. 5 is a cross-sectional view showing an example of a heat roller together with a circuit diagram.
[Explanation of symbols]
25 Heat removal mechanism 28 Heat roller 30 Heated object

Claims (1)

In a processing apparatus using a heat roller that includes a heat roller to which a heated object is attached and transports it and a temperature controller that maintains the temperature of the heat roller at a predetermined temperature, a cooling gas is blown onto the heat roller. A deprivation mechanism for depriving heat from the heat roller is provided, and prior to attaching the heated object to the heat roller, the deheated mechanism is operated to heat the heated object from the heated roller heated to the predetermined temperature. When the object to be heated is deprived of heat and the heated object is attached to the heat roller, the operation of the heat deprivation mechanism is stopped and the temperature of the heat roller is maintained at the predetermined temperature. A processing device using a heat roller.

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