JPH11102494A - Rotary joint for transmitting measurement information of resistance temperature detector - Google Patents

Abstract

(57) [Summary] (with correction) [Problem] Accurate temperature measurement can be performed over a long period of time even when the temperature of a rotating body such as a cooling roll is measured by attaching a resistance temperature detector to the rotating body. Further, there is provided a rotary joint for transmitting measurement information of a resistance temperature detector, which is free from a danger of electric leakage accident and explosion. SOLUTION: A temperature measuring resistor 11 such as platinum embedded in a surface portion of a cooling roll is connected to a resistance temperature converter 8 in a housing via a connector portion 12. An A / F converter for converting a current into a pulse signal, the resistance temperature converter 8 and the transmitter 10 are connected, and the power converter 8 for supplying power to each device is connected to each device. An antenna member 13 attached to the transmission support unit side and an antenna member 17 attached to the first housing member 5 perform non-contact transmission of measurement information, and a power transmission coupler 18 attached to the transmission support unit and a first power transmission coupler 18. Power is supplied in a non-contact manner by a power transmission coupler 19 attached to the housing member 5 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transmitting measurement information of a resistance thermometer fixedly attached to a rotating body such as a water-cooled cooling roll used in a laminating process from a rotating side to a stationary side. The technical field of the rotary joint for transmitting the measurement information of the resistance thermometer for measurement.

[0002]

2. Description of the Related Art Conventionally, for example, in an extrusion laminating machine for laminating polyethylene on PET (polyethylene terephthalate), a cooling roll is used in order to immediately cool and fix polyethylene coated on PET by a T-die. ing.

[0003] This cooling roll is provided with a plurality of cooling water pipes inside the roll, and the roll surface uniformly cools the film to be laminated, and is mirror-finished or glossed to maintain good smoothness of the film surface. It has been erased.

In a laminating machine using such a cooling roll, it is important to maintain a uniform and predetermined surface temperature of the cooling roll in order to perform good lamination. It is necessary to accurately detect the surface temperature of the roll.

However, as described above, the surface of the cooling roll is mirror-finished or frosted and cannot be damaged. Therefore, a temperature sensor using a conventional surface-contact type thermistor or the like is used. Could not be used. Even when using a non-contact type temperature sensor that measures the temperature by irradiating infrared rays to the roll surface, accurate measurement can be performed because the reflectance varies depending on the state of the surface of the cooling roll. Did not.

Therefore, in order to solve such a problem, a temperature measuring resistor such as platinum is embedded inside the surface layer of the cooling roll, and the temperature of the surface of the cooling roll is reduced by a change in the resistance value of the temperature measuring resistor. A measuring method was proposed.

In this method, since the resistance bulb rotates together with the cooling roll, a change in the resistance value of the resistance bulb must be transmitted from the rotating side to the stationary side. Therefore, conventionally, a slip ring was attached to the rotating shaft of the cooling roll, and the change in the resistance value was measured as a change in current value or voltage value via the slip ring.

[0008]

However, according to the above-mentioned prior art, the contact resistance of the slip ring itself affects the measurement, and the value of the contact resistance changes with time due to wear and loss. Therefore, there has been a problem that accurate temperature measurement cannot be performed.

When the cumulative number of revolutions of the slip ring has reached a predetermined value, maintenance is required, and the slip ring may need to be replaced. This may increase the cost and may require a complicated replacement operation. There was a problem that did not become.

Further, in the method using a slip ring,
Since the contact portion of the signal line is exposed, the cooling roll using the cooling water has a risk of water leakage or the like due to water. Further, in an environment using a solvent, there is a risk that an explosion may occur due to the generation of a spark at the contact portion.

In view of the above, the present invention has been made in view of the above-mentioned problems. Even when the temperature of a rotating body such as a cooling roll is measured by attaching a temperature measuring resistor to the rotating body, the present invention provides an accurate method. Temperature measurement is possible for a long time,
An object of the present invention is to provide a rotary joint for transmitting measurement information of a resistance temperature detector, which has no risk of electric leakage accident or explosion.

[0012]

A rotary joint for transmitting measurement information of a resistance temperature detector according to claim 1 is fixedly attached to a rotating body to solve the above-mentioned problem.
The measurement information by the resistance thermometer rotating with the rotating body,
A rotary joint for transmitting measurement information of a resistance temperature detector to be transmitted to a stationary part side with respect to the rotating body, wherein a connection terminal connected to a rotating shaft of the rotating body and performing an electrical connection with the resistance temperature detector is provided. A transmission unit supporting unit provided, a conductive first housing member attached to the transmission unit supporting unit via a bearing member, and formed integrally with the transmission unit supporting unit or attached to the transmission unit supporting unit A conductive second housing member that covers the transmission means support portion of the transmission means support unit together with the first housing member in a substantially sealed state; and An information conversion unit electrically connected to a terminal to convert measurement information of the resistance temperature detector into an electric signal; and the transmission unit support unit. A transmission unit attached to the transmission unit support unit and wirelessly transmitting an electric signal output from the information conversion unit; and one of the transmission unit supports the transmission unit of the transmission unit support unit and electrically connected to the transmission unit. And a pair of antenna members mounted on a support portion provided in the first housing member and positioned so as to face each other in a non-contact manner, and one is provided for the information conversion means and the transmission means. Attached to the transmission means support portion of the transmission means support unit to supply power, the other is attached to a support portion provided in the first housing member, and is positioned so as to face each other in a non-contact manner. A pair of power transmission couplers;
A connection terminal provided on the housing member and electrically connected to one of the antenna member and the power transmission coupler.

[0013] According to the rotary joint for transmitting measurement information of the resistance temperature detector according to the first aspect, the resistance temperature sensor that is fixedly attached to the rotating body and rotates together with the rotating body;
The information conversion means is electrically connected via a connection terminal provided on the transmission means support unit. Therefore, the temperature change of the rotating body, as the measurement information of the resistance temperature detector,
It is converted into an electrical signal and transmitted wirelessly by the transmitting means. In this wireless transmission, one antenna member attached to the transmission unit support unit together with the information conversion unit and the transmission unit, and a first housing member attached rotatably relative to the transmission unit support unit and the second housing member It is attached to a support portion inside, and is provided between the other antenna member provided so as to face the one antenna member in a non-contact manner. Therefore, even when used for a long period of time, there is no change in contact resistance due to wear unlike a slip ring, and the measurement information of the resistance temperature detector is accurately transmitted from the rotating side to the stationary side over a long period of time. Further, not only the transmission signal but also the power supply is provided in a non-contact manner by the one power transmission coupler provided in the transmission means support unit and the other power transmission coupler provided in the first housing member. Therefore, a spark such as a slip ring is not generated, and power is supplied safely and reliably for a long period of time. In addition, the first housing member and the second housing member are made of conductive material and cover the transmission means support portion of the transmission support unit in a substantially sealed state, so that good shielding is performed, radio wave leakage outside the housing, In addition, it is possible to substantially eliminate noise from entering the housing.

According to a second aspect of the present invention, there is provided a rotary joint for transmitting measurement information of a resistance temperature detector according to the first aspect of the present invention. The rotating body is a water-cooled cooling roll, and the connection terminal provided on the transmission means support unit and the connection terminal provided on the first housing member are water-resistant connectors; The bearing member to which the first housing member is attached is a bearing member provided with a waterproof seal member.

According to the rotary joint for transmitting measurement information of a resistance temperature detector according to claim 2, the connection provided on the transmission means support unit and the first housing member using a water-cooled cooling roll as the rotating body. As a terminal,
Since a water-resistant connector is used and a bearing member provided with a water-resistant seal member is also used as a bearing member for attaching the first housing member to the transmission means support unit, measurement information transmission is performed even in an environment where cooling water is handled. To prevent water infiltration into the rotary joint and transmit good measurement information. Also, no leakage accident will occur.

According to a third aspect of the present invention, there is provided a rotary joint for transmitting measurement information of a resistance temperature detector for transmitting measurement information of a resistance temperature detector according to the first or second aspect. In the rotary joint, an installation part of the power transmission coupler and an installation part of the antenna member are separated by a conductive shielding member.

According to the rotary joint for transmitting measurement information of the resistance temperature detector according to the third aspect, the installation portion of the power transmission coupler and the installation portion of the antenna member are separated by a conductive shielding member. Therefore, good transmission of measurement information is always performed without affecting the wireless transmission by the antenna member.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 9 of the accompanying drawings. FIG. 1 is a diagram showing a schematic configuration of an extrusion-type laminating machine provided with a cooling roll as one embodiment of a rotary joint for transmitting measurement information of a resistance temperature detector according to the present invention.

As shown in FIG. 1, the extrusion type laminating machine of the present embodiment is provided with a sheet supply section 20 for supplying PET as a base material. The PET 21 supplied from the sheet supply unit 20 reaches the laminating unit via the transport path 22 and is configured to face the T-die 23 in the laminating unit. T
The melted polyethylene is supplied to the die 23 from the upper hopper 24, and the polyethylene supplied from the T-die 23 is applied on the PET 21. And
The polyethylene applied on the PET 21 is immediately cooled by the cooling roll 25 and fixed on the PET 21. The sheet formed into two layers by such a lamination process is conveyed to a winding unit 27 via a conveying unit 26, and is wound by the winding unit 27.

In order to carry out good laminating processing in such a laminating machine, it is important to maintain the surface temperature of the cooling roll 25 at a predetermined value, and the following cooling roll 25 is used.

FIG. 2 is a partially broken perspective view showing a schematic configuration of the cooling roll 25 in the present embodiment. As shown in FIG. 2, a plurality of pipes 30 for supplying cooling water are arranged inside the roll, and a vapor phase of the working fluid is provided between the pipe 30 and the roll surface 31. Configuration. Therefore, the temperature of the roll surface end is only 5 to 8 ° C. lower than that of the intermediate portion, and if the surface temperature of the roll intermediate portion is 36 ° C., the end becomes 29 to 31 ° C. Therefore, by setting this temperature to be equal to or higher than the dew point of the surrounding air, dew condensation by the cooling roll 25 can be completely prevented. In the present embodiment, the diameter of the cooling roll 25 is 600 mm, the length is 2000 mm, and the diameter of a rotating shaft connected to a rotary joint described later is 15 mm. The cooling water temperature was 15 ° C.

Further, since the surface 31 of the cooling roll 25 is not only uniform in temperature but also mirror-finished, the transparency of the sheet to be laminated is made uniform over the entire width.

However, such a cooling roll 2
Even when using No. 5, maintaining the surface temperature at a predetermined appropriate temperature is indispensable for good lamination.

Therefore, as shown in a comparative example shown in FIG. 3, the temperature measuring resistor 11 made of platinum is embedded in the surface layer 31 'of the cooling roll 25, and the temperature is measured by the temperature measuring resistor 11 so that the cooling is performed. A method has been proposed in which the surface temperature is maintained at a desired constant temperature by controlling the flow rate of water.

However, in this method, since the resistance bulb 11 rotates together with the cooling roll 25, it is necessary to transmit a change in the resistance value of the resistance bulb 11 from the rotating side to the stationary side.

Therefore, conventionally, as shown in a comparative example shown in FIG.
3 and the change in the resistance value was measured as a change in current value or voltage value via the slip ring 33.

However, in the above-mentioned method, since the contact resistance of the slip ring 33 itself affects the measurement, and the value of the contact resistance changes with time due to wear and loss, accurate temperature measurement is not possible. There was a problem that it was not possible.

The slip ring 33 must be replaced when the cumulative number of revolutions reaches a predetermined value.
There was a problem that the cost was increased and complicated replacement work had to be performed.

Further, in the method using the slip ring 33, since the contact portion of the signal line is exposed, when the device is mounted on the cooling roll 25 using cooling water as in the present embodiment, an electric leakage accident due to water, etc. There was a danger. Also,
In an environment using a solvent, there is a risk that an explosion may occur due to the generation of a spark at the contact portion.

Therefore, in this embodiment, as shown in FIG. 4, the temperature measuring resistor 11 made of platinum is embedded in the surface layer 31 'of the cooling roll 25, and the rotary joint 1 for transmitting the measurement information of the temperature measuring resistor. Using a resistance thermometer 1
1 is transmitted from the rotating side to the stationary side.

Hereinafter, the configuration of the rotary joint 1 for transmitting measurement information in the present embodiment will be described in detail with reference to FIGS.

FIG. 5 is a cross-sectional view showing the assembled state of the rotary joint 1 for transmitting measurement information of the resistance temperature detector 11 in one embodiment of the present invention. FIG. 6 is an exploded view of the rotary joint 1 for transmitting measurement information of FIG. 7 is a perspective view corresponding to FIG. 6, FIG. 8 is a front perspective view of the rotary joint 1 for transmitting measurement information from the cooling roll 25 side, and FIG. 9 is a rotary for transmitting measurement information of the present embodiment. FIG. 3 is a block diagram showing an electrical connection relationship of information transmission means in the joint 1;

As shown in FIGS. 5 and 6, the rotary joint 1 for transmitting measurement information of the present embodiment comprises a transmission support unit 3 mounted on a rotating shaft 32 of the cooling roll 25 via a mechanical lock 2, Disc-shaped second housing member 4 integrally formed with transmission support unit 3
And a first housing member 6 attached to the transmission means support unit 3 via a bearing 5 such as a ball bearing.

The first housing member 6 and the second housing member 4 are made of aluminum, and the surfaces are anodized. Further, the first housing member 6 is provided with a bottom 6a, and further, a concave portion 6b is provided at an edge around the opening on the side facing the second housing member 4. A projection 4a corresponding to the recess 6b is provided at an outer peripheral end of the second housing member 4 facing the edge of the first housing member 6, and as shown in FIG. When the member 6 is attached to the transmission means support unit 3, the gap formed between the first housing member 6 and the second housing member 4 is very small, and the first housing member 6 has a bottom portion. Because of the provision of 6a, the transmission means support portion 3a of the transmission means support unit 3 is in a substantially sealed state.

In the present embodiment, the first housing member 6 has a cylindrical shape with an outer diameter of 119 mm and a length of about 153 mm. In the present embodiment, the bottom 6a of the first housing member 6 is formed integrally with the first housing member 6, but the present invention is not limited to such a configuration.
The bottom 6a may be configured to be detachable from the first housing member 6. With this configuration, it is possible to facilitate the work of attaching the power transmission couplers 18 and 19 described later.

The transmission means support portion 3a is provided with a support plate 3b provided substantially perpendicular to the center axis.
As shown in FIGS. 5 to 8, a power converter 7, a resistance temperature converter 8, an A / F converter 9, and an F signal transmitter 10, which constitute transmission means, are attached to b. FIG. 8 shows that the rotary joint 1 for transmitting the measurement information is connected to the cooling roll 2.
FIG. 5 is a front perspective view when viewed from the side of FIG. 5, but each device constituting the transmission means is shown by a solid line for easy understanding. The description of the mechanical lock 2 is omitted.

As shown in FIG. 7 and FIG. 8, the respective devices constituting the transmission means are mounted in two directions so as to be perpendicular to each other, and in FIG. The A / F converter 9 is mounted on the right side, and the power supply converter 7 and the F signal transmitter 10 are mounted on the left side. With such a configuration, the balance of the center of gravity during rotation of the cooling roll 25 can be balanced, and the rotation of the cooling roll 25 is not hindered.

On the surface of the second housing member 4,
A rotation-side connector section 12 is provided, and an electrical connection is made between the resistance bulb 11 and the resistance temperature converter 8 attached to the cooling roll 25.

Further, the resistance temperature converter 8 is an A / F converter 9
The A / F converter 9 is electrically connected to an F signal transmitter 10, and the F signal transmitter 10 is electrically connected to the first antenna member 13.

The first antenna member 13 is a member in which a ring-shaped printed circuit board is laminated in multiple layers, and is housed in an antenna member housing chamber 3c formed at the rear of the transmission support unit 3. This antenna member accommodation room 3c
A shielding member 14 fixed to the first housing member 6 is attached to the outer wall of the first housing member 6 via bearings 13 and 14. Then, the antenna member accommodating chamber 14a on the fixed portion side formed by the shielding member 14 is opposed to the first antenna member 13 with a predetermined gap.
A second antenna member 17 is provided. Since the shielding member 14 is formed of an iron plate and the transmission support unit 3 is formed of aluminum, the antenna member housing chamber 3c and the antenna member housing room 14a are arranged in the same area as the above-described area where the resistance temperature converter 8 and the like are arranged. An electromagnetic shield is provided for the area where the power transmission couplers 18 and 19 to be described later are arranged.

Further, power transmission couplers 18 and 19 formed of ferrite and a coil are attached to the rearmost end of the transmission means support unit 3, and a predetermined power transmission coupler 18 is provided so as to face the power transmission coupler 18. With a gap, the power transmission coupler 19 is connected to the support portion 6 b of the first housing member 6.
Attached to. Then, the power transmission coupler 18
And the power converter 7 described above are electrically connected.

The second antenna member 17 and the power transmission coupler 19 are electrically connected to a stationary connector 6c provided on the first housing member 6, and the stationary connector 6c is connected to the stationary connector 6c. By attaching the power supply, external power supply and signal transmission to the outside are enabled.

The power transmission couplers 18 and 19 transmit power using electromotive force generated by electromagnetic induction. In the present embodiment, a pot-type ferrite core having a mounting hole in the center is used, and a coil is mounted on a bobbin. It is formed and mounted on a pot-type ferrite core, and the coil portions are arranged so as to face each other.

Next, the power supply and signal paths in the rotary joint for transmitting measurement information of the present embodiment will be described with reference to the block diagram of FIG.

A change in the resistance value of the resistance temperature detector 11 connected to the resistance temperature converter 8 via the rotation side connector section 12 is converted into a current in the resistance temperature converter 8, and this current is
In the A / F converter 9, the signal is converted into a predetermined frequency pulse signal according to the value. In the present embodiment, a 1000 Ω resistor is used as the resistance temperature detector 11, and the output signal when converted into a current by the resistance temperature converter 8 is 4 ° for a temperature of 0 ° C. to 100 ° C. ２０20 mA. In addition, 340 MHz is used as the carrier frequency. The frequency pulse signal is frequency-modulated in the F signal transmitter 10 and the first antenna member 1
3 is transmitted. In the present embodiment, the transmission rate is set to 2 Mbps. On the other hand, the signal transmitted in this way is received by the receiver 40 on the stationary side via the second antenna member 17 and is converted into a current by the F / A converter 41. Therefore, the cooling roll 25 on the stationary side
Surface temperature can be detected. As described above, since the signal transmission is performed through the non-contact first antenna member 13 and the second antenna member 17, accurate temperature detection can be performed without affecting the resistance value change of the resistance temperature detector 11. It can be carried out. Further, in the present embodiment, when the cooling roll 25 rotates at 1000 rpm, the rotating portion of the measurement information transmitting rotary joint 1 also rotates at 1000 rpm. However, even in this case, since the transmitting portion is non-contact, There is no deterioration due to wear and the like, and good temperature detection can be performed for a long time.

The power is converted from 100 V AC to 28 V DC in the power converter 42 on the stationary side, and the power is transmitted through the power transmission coupler 19 in a non-contact manner.
To the power converter 7. In the present embodiment, a voltage of DC 28 V is supplied to the power transmission coupler 19, and this voltage is supplied to the power converter 7 by 24 V, ± 1.
Converted to 5V. In the present embodiment, as described above, the rotating part of the rotary joint 1 for transmitting measurement information has a maximum of one.
Although the motor rotates at 000 rpm, the power is supplied in a non-contact manner as described above, so that no spark such as a slip ring is generated and no explosion occurs even in a solvent atmosphere. In addition, since there is no contact, there is no deterioration due to wear and the like, and good power supply can be performed for a long time.

The bearing 5 and the connector 1 described above
Since the first housing member 6 and the second housing member 4 cover the transmission means supporting portion in a substantially sealed state, the cooling roller 25 using cooling water is used. The rotary joint 1 of the present embodiment
There is no danger of failure of electric circuit etc. due to water and leakage accident.

As described above, in the present embodiment, the measurement information of the resistance temperature detector 11, that is, the change in the resistance value is transmitted to the stationary side by non-contact, so that accurate detection can be performed for a long time. Will be done.

In the present embodiment, an example is described in which the rotary joint 1 for transmitting measurement information of the present invention is used for the cooling roller 25 of the laminating machine. However, the present invention is not limited to this. As shown in FIG. 10A, the rotary joint 1 for transmitting measurement information of the present invention is also used for transmitting the measurement information of the resistance temperature detector 11 on the cooling rolls 25a and 25b of the film manufacturing machine using the T-die. Can be used. In the film manufacturing machine shown in FIG. 10A, melted polypropylene or the like falls from the T-die 23a in a thin film shape, is extruded onto a cooling roll 25b, and is cooled and solidified. Even in such an apparatus, accurate temperature control can be performed by controlling the flow rate of the cooling water using the rotary joint 1 for transmitting the measurement information of the resistance temperature detector 11 of the present invention, so that a film with high transparency can be manufactured. can do. Further, the occurrence of dew condensation can be reliably prevented.

As shown in FIG. 10B, the rotary joint 1 for transmitting measurement information of the present invention is also used for transmitting measurement information of the resistance temperature detector 11 in the cooling roll 25c of the calendar embossing machine. be able to. This apparatus heats a leather or a sheet, forms a three-dimensional pattern on the surface of the leather or the sheet, and cools the sheet to produce artificial leather, wallpaper, a patterned sheet, or the like.
Even in such an apparatus, the surface temperature of the cooling roll 25c is stabilized by performing accurate temperature control using the rotary joint 1 for transmitting measurement information of the resistance temperature detector 11 of the present invention. Keep the finish good,
Speed up can be achieved.

Further, as shown in FIG. 10 (C), the temperature measuring resistor 1 in the cooling roll 25d of the offset printing machine is used.
The rotary joint 1 for transmitting measurement information of the present invention can also be used for transmitting the measurement information 1. This device is
Printing is performed on the paper supplied from the paper feeding unit 40 and the infeed unit 41 by the printing unit 42, and after printing, the paper is heated to 120 ° C. by the dryer 43 with a deodorizing device. Then, the ink is rapidly cooled down to about 30 ° C. to fix the ink, and is folded to a predetermined size at the folding section 45. In such a device, the rotary joint 1 for transmitting measurement information of the resistance temperature detector 11 of the present invention is also used.
By performing accurate temperature control by using, the surface temperature of the cooling roll 25d is stabilized, so that the printing ink can be uniformly cooled and fixed. In addition, since dew condensation can be reliably prevented, an excellent effect that paper breakage hardly occurs can be exhibited.

In the above-described embodiment, the case where the cooling roll is used as the rotating body has been described. However, the present invention is not limited to this, and can be applied to a heating roll. However, in particular, when the rotary joint for transmitting measurement information of the present invention is applied to a cooling roll using cooling water, since the above-described water-resistant treatment is performed, a particularly excellent effect is exhibited. is there.

[0053]

According to the rotary joint for transmitting the measurement information of the resistance temperature detector according to the first aspect, the measurement information of the resistance temperature detector which is fixedly attached to the rotating body and rotates together with the rotating body, It is converted to an electric signal and wirelessly transmitted by a pair of non-contact antenna members, and power is supplied in a non-contact manner by a power transmission coupler, and each antenna member and a member supporting each power transmission coupler are connected to each other. In addition to being rotatable, the housing for the signal conversion unit, transmission unit, antenna unit and power transmission coupler is sealed by the housing member. There is no change, and the measurement information of the resistance temperature detector can be accurately transmitted from the rotating side to the stationary side over a long period of time. Further, since a power transmission coupler is used, sparks such as slip rings do not occur, and power is supplied safely and reliably for a long period of time. In addition, good shielding can be performed by the housing member, and electric wave leakage outside the housing and noise mixing into the housing can be almost eliminated.

According to the rotary joint for transmitting measurement information of a resistance temperature detector according to claim 2, the connection provided on the transmission means support unit and the first housing member using a water-cooled cooling roll as the rotating body. As a terminal,
Since a water-resistant connector is used and a bearing member provided with a water-resistant seal member is also used as a bearing member for attaching the first housing member to the transmission means support unit, measurement information transmission is performed even in an environment where cooling water is handled. It is possible to reliably prevent water from infiltrating into the rotary joint and transmit good measurement information. Also,
The occurrence of a ground fault can be reliably prevented.

According to the rotary joint for transmitting measurement information of the resistance temperature detector according to the third aspect, the installation portion of the power transmission coupler and the installation portion of the antenna member are separated by a conductive shielding member. Therefore, good transmission of measurement information can be always performed without affecting the wireless transmission by the antenna member.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of an extrusion laminating machine according to an embodiment of the present invention.

FIG. 2 is a partially broken perspective view showing a schematic configuration of a cooling roller used in the laminating machine of FIG.

FIG. 3 is a cross-sectional view illustrating a method of measuring a temperature of a cooling roller and a method of transmitting measurement information in a comparative example.

FIG. 4 is a cross-sectional view illustrating a method of measuring the temperature of a cooling roller and a method of transmitting measurement information according to an embodiment of the present invention.

FIG. 5 is a sectional view showing a schematic configuration of a rotary joint for transmitting measurement information in an assembled state according to an embodiment of the present invention.

FIG. 6 is a sectional view showing a schematic configuration of a rotary joint for transmitting measurement information in an exploded state according to an embodiment of the present invention.

FIG. 7 is a perspective view showing a schematic configuration of a rotary joint for transmitting measurement information in one embodiment of the present invention corresponding to FIG. 6;

FIG. 8 is a front perspective view of a rotary joint for transmitting measurement information according to an embodiment of the present invention, as viewed from a cooling roll side.

FIG. 9 is a block diagram showing an electrical connection relationship in a rotary joint for transmitting measurement information according to an embodiment of the present invention.

10A is a film manufacturing machine provided with a cooling roll to which the rotary joint for transmitting measurement information of the present invention is applicable, and FIG. 10B is a film manufacturing machine to which the rotary joint for transmitting measurement information of the present invention is applicable. (C) is a side view showing a schematic configuration of an offset printing press provided with a cooling roll to which the rotary joint for transmitting measurement information of the present invention can be applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rotary joint for transmission of measurement information 3 ... Transmission means support unit 4 ... Second housing member 5 ... Bearing member 6 ... First housing member 7 ... Power supply converter 8 ... Resistance temperature converter 9 ... A / F converter 10 ... F signal transmitter 11: resistance temperature detector 12: rotating side connector 13: rotating side antenna member 14: shielding member 17: stationary side antenna member 18: rotating side power transmission coupler 19: stationary side power transmission coupler 25 ... Cooling roll

Claims (3)

[Claims] A rotary joint for transmitting measurement information of a resistance thermometer, which is fixedly attached to a rotating body and transmits measurement information of the resistance thermometer rotating with the rotating body to a stationary portion side with respect to the rotating body. A transmission unit supporting unit connected to a rotating shaft of the rotating body and provided with a connection terminal for making an electrical connection with the temperature measuring resistor, and attached to the transmission unit supporting unit via a bearing member. A conductive first housing member, and a transmission unit supporting unit of the transmission unit supporting unit formed integrally with the transmission unit supporting unit or attached to the transmission unit supporting unit, together with the first housing member. A conductive second housing member for covering the state, and attached to the transmission means support portion of the transmission means support unit, and electrically connected to the connection terminal. Information conversion means for converting the measurement information of the resistance temperature detector into an electric signal, and an electric signal output from the information conversion means attached to the transmission means support portion of the transmission means support unit. Transmitting means for wirelessly transmitting, one of which is electrically connected to the transmitting means and attached to the transmitting means supporting portion of the transmitting means supporting unit, and the other is attached to a supporting portion provided in the first housing member. A pair of antenna members positioned so as to face each other in a non-contact manner, one of which is attached to the transmission means support portion of the transmission means support unit to supply power to the information conversion means and the transmission means, The other is mounted on a support portion provided in the first housing member, and is a pair of power transmission couplers positioned so as to face each other in a non-contact manner. And a connection terminal provided on the first housing member and electrically connected to one of the antenna member and the power transmission coupler. Rotary joint. 2. The rotating body is a water-cooled cooling roll, and the connection terminal provided on the transmission means support unit and the connection terminal provided on the first housing member are water-resistant connectors. The rotary joint for transmitting measurement information of a resistance temperature detector according to claim 1, wherein the bearing member for attaching the first housing member to the transmission means support unit is a bearing member provided with a water-resistant seal member. 3. The temperature measuring device according to claim 1, wherein an installation portion of the power transmission coupler and an installation portion of the antenna member are separated by a conductive shielding member. Rotary joint for transmitting measurement information of resistor.