JP2018184625A - Metallic roller, electric resistance measuring means, and plating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic roller, electric resistance measuring means, and a plating apparatus that can improve the productivity of a conductively plated fiber yarn without erroneously measuring the electric resistance of the conductively plated fiber yarn with a core wire of a non-metallic fiber.SOLUTION: A plating apparatus comprises metallic rollers 10 and 20 that are included electric resistance measuring means 1 for measuring the electric resistance of a conductively plated fiber yarn 90. A pair of the metallic rollers 10 for measuring a voltage includes a metal plating layer 11 comprising a metal with a high conductivity around its surrounding surface. A pair of the metallic rollers 20 for supplying electric current includes a metal plating layer 21 comprising a metal that has a high conductivity and an equivalent hardness to stainless steel.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a metal contained in an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber thread having a metal wire plated around a non-metallic fiber made of polymer fiber, carbon fiber, ceramic fiber, etc. as a core wire. The present invention relates to a roller, electrical resistance measuring means, and a plating apparatus. More specifically, the present invention relates to a metal roller, electrical resistance measuring means, and a plating apparatus that can improve the productivity of conductive plated fiber yarns without erroneously measuring the electrical resistance value of the conductive plated fiber yarns. Furthermore, it is related with the plating apparatus which can adjust plating time according to the measurement result of the electrical resistance value of electroconductive plating fiber yarn, and can improve productivity more.

  Conventionally, as a method for measuring the electrical resistance value of a conductive plating fiber yarn, a method of measuring an electrical resistance value by bringing a plurality of metal rollers into contact with a conductive plating fiber yarn which is plated and sent is known. Yes. Specifically, a two-terminal measurement method and a four-terminal measurement method are known. Measure the voltage applied to the conductive plating fiber yarn by moving the conductive plating fiber yarn while making contact between the pair of metal rollers and passing a constant current from the pair of metal rollers. Then, the electric resistance value is calculated by dividing the voltage value by the current value.

  The metal roller included in the conventional electrical resistance measuring means is made of stainless steel so that the roller portion is not easily worn even when the conductive plated fiber yarn is slid over a long period of time. However, due to the low conductivity of the stainless steel metal roller, even if a plating layer with a necessary and sufficient thickness is formed on the surface of the conductive plated fiber yarn, its electrical resistance The value was erroneously measured as being outside the allowable range, and it was sometimes determined that the plating was defective.

  If a part of the conductive plating fiber thread that has been satisfactorily plated has a defective plating, the conductive plating fiber thread of a lot unit or a considerable length, including the defective part, should be removed. It had to be disposed of, which was one of the causes of yield loss. In order to improve the productivity of the conductive plating fiber yarn, an electric resistance measuring means capable of accurately measuring the electric resistance value of the plated conductive plating fiber yarn has been required.

  In addition, in order to improve productivity, the plating apparatus for conductive plating fiber yarns moves a plurality of conductive plating fiber yarns in parallel in one plating space that is narrow and long, It is made to plate at the same time. Then, the electric resistance value is measured by one electric resistance measuring means for each conductive plated fiber yarn so as to be continued to a plating step of plating a plurality of conductive plated fiber yarns.

  In order to improve productivity, if you try to increase the number of conductive plating fiber yarns that simultaneously pass through a narrow plating space, the electrical resistance corresponding to the number of fiber wires with the same length as conventional plating equipment The electrical resistance measuring means must be downsized so that the measuring means can be arranged.

  Patent Document 1 discloses a technique of an electrical resistance measurement method and a measurement apparatus in which an electrical resistance value of a conductive fiber yarn is measured by a two-terminal method using a pair of metal rollers. According to the technology described in Patent Document 1, electric current is supplied from a pair of rotatable metal rollers arranged at intervals, and an electrical resistance value is measured by bringing a conductive fiber yarn into contact between the metal rollers. I am letting. In order to suppress wear of the metal roller, a hard chromium plating layer may be provided on the surface of the metal roller. In addition, when measuring the electrical resistance value, it is said that tension is applied to the conductive fiber yarn using a tension roller so that the conductive fiber yarn is brought into contact with the metal roller under a certain tension so that the conductive fiber yarn does not loosen. ing.

  However, according to the technique of the two-terminal measurement method described in Patent Document 1, the electrical resistance value obtained by adding the electrical resistance value of the conductive fiber yarn itself and the contact electrical resistance between the conductive fiber yarn and the metal roller is measured. Will be. However, there is a problem that it is difficult to accurately measure the electrical resistance value of the conductive fiber yarn because the ratio of the contact electrical resistance to the total electrical resistance value is high.

  In addition, when a hard chromium plating layer is provided, the electrical resistance value of chromium is about 5 to 8 times higher than that of highly conductive gold, silver, copper, etc., and the contact electrical resistance of chromium The value is about 5000 times that of gold / silver having a small contact electric resistance value and about 25 times that of stainless steel. Then, when the hard chrome plating layer is provided, there is a problem that the measurement accuracy of the electrical resistance value of the conductive fiber yarn is lowered even though the wear of the metal roller can be suppressed.

  Patent Document 2 discloses a technique of an electrical resistance measurement method and a measurement apparatus in which an electrical resistance value of a conductive fiber yarn is measured by a four-terminal method using two pairs of metal rollers. According to the technique described in Patent Document 2, it is said that the influence of the contact electrical resistance between the metal roller and the conductive fiber yarn can be reduced. Specifically, by measuring the electrical resistance value while holding the conductive fiber yarn sandwiched from above and below by means of four sets of metal rollers and rubber rollers arranged in series, a constant length of conductivity It is said that the electrical resistance value of the fiber yarn can be measured.

  However, since the electrical resistance value is measured in a state where the conductive fiber yarn is sandwiched between the metal roller and the rubber roller, there is a problem that the plating layer formed on the conductive plating fiber yarn may be peeled off. It was. Furthermore, when the rotation of the pair of rollers becomes non-uniform, the fibers may be broken, and the broken fibers may be entangled with the rollers, which may require maintenance. In addition, it is necessary to inspect the worn state of the rubber roller and whether or not the debris from which the rubber roller has been worn adheres to the surface of the metal roller, and there is a problem in that maintenance is troublesome.

Patent Document 1: Japanese Patent Laid-Open No. 7-146318 Patent Document 2: Japanese Patent Laid-Open No. 2001-221819

  The problem to be solved by the present invention is to measure the electric resistance value of a conductive plated fiber yarn in which a non-metallic fiber made of a polymer fiber, a carbon fiber, a ceramic fiber or the like is used as a core wire and metal is plated around it. It is to provide a metal roller, electrical resistance measuring means and plating apparatus included in the measuring means. More specifically, the present invention provides a metal roller, electrical resistance measuring means, and a plating apparatus that can improve the productivity of conductive plated fiber yarns without erroneously measuring the electrical resistance value of the conductive plated fiber yarns. That is. Furthermore, it is to provide a plating apparatus capable of adjusting the plating time in accordance with the measurement result of the electrical resistance value of the conductive plating fiber yarn and further improving the productivity.

  A metal roller according to a first aspect of the present invention is a metal roller included in an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber yarn having a non-metallic fiber as a core wire and metal-plated around the core. The electrical resistance measuring means includes a pair of voltage measuring metal rollers for measuring a voltage value applied to the conductive plated fiber yarn, and a pair of the voltage measuring metal rollers. The roller peripheral surface has a metal plating layer made of any metal selected from gold, silver, copper, and two or more of these alloys.

  The conductive plated fiber yarn refers to a fiber yarn in which conductivity is imparted to a non-metallic fiber forming a core wire such as a polymer fiber, a carbon fiber, or a ceramic fiber by providing a plating layer around the core wire. . The fiber forming the core wire may be a single fiber or a fiber bundle. The plating layer provided around the core wire is not limited to the case where only the electroless plating layer is formed, and the electroplating layer may be laminated on the electroless plating layer. Moreover, the metal material of the plating layer provided around the core wire is not limited.

  The metal roller for voltage measurement has a metal plating layer of any metal selected from gold, silver, copper, and these two or more alloys on the peripheral surface of the roller. Compared with a conventional metal roller made of stainless steel, the electrical resistance value is about 1 / 25th of gold, and copper / silver is about 1 / 40th, and the electrical conductivity in the metal is excellent. Compared with a conventional metal roller made of stainless steel, the contact electrical resistance value is about 1/200 or less for gold and silver and about 1/15 or less for copper. Is also excellent. Regardless of whether it is a single metal of gold, silver, or copper, the conductivity in the metal and at the metal contact area is improved compared to conventional stainless steel. Errors in measurement can be reduced.

  In particular, when the metal plating layer is made only of gold, the contact electric resistance can be minimized among the metals, and the voltage value can be measured with higher accuracy, which is preferable. On the other hand, if any of gold and silver, gold and copper, silver and copper, or an alloy of gold, silver, and copper is used, the contact electric resistance is larger than that of gold. However, the above-mentioned alloy plating containing silver or copper, which has higher conductivity in the metal than gold, has an electrical resistance value in the metal and in the contact portion of the metal as compared with the conventional stainless steel or hard chrome plating. Measurement error can be reduced. In addition, the alloy plating has a Vickers hardness larger than that of gold alone. When importance is attached to the durability of the metal roller, the metal roller may be made of the above alloy plating.

  Compared with a conventional metal roller made of stainless steel, the metal roller of the present invention can increase the electrical conductivity in the metal and in the contact portion of the metal, and accurately measure the electric resistance value of the conductive plated fiber yarn. be able to. Thereby, the productivity of the plated fiber yarn can be improved. Of course, by using the metal roller of the first invention also for the metal roller for supplying current, the current value to be supplied can be made an error-free current and the electric resistance value can be measured more accurately. That is.

  A metal roller according to a second invention of the present invention is a metal roller included in an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber yarn having a non-metallic fiber as a core wire and metal-plated around the core. The electric resistance measuring means includes a current supplying metal roller for supplying a constant current to the conductive plated fiber yarn, and a voltage measuring metal roller for measuring a voltage value applied to the conductive plated fiber yarn. And a pair of metal rollers for supplying current, a gold-cobalt alloy plating layer having a Vickers hardness of 150 or more and 200 or less, and a Vickers hardness of 280 or more and 320 or less. A gold-nickel alloy plating layer, a gold-copper alloy plating layer having a Vickers hardness of 250 to 380, a hard silver plating layer having a Vickers hardness of 100 to 230, Kkazu hardness is characterized by having either a metal plating layer selected from among the 150 or more 250 or less of the hard copper plating layer.

  Since the electric resistance value of the metal plating layer used in the metal roller according to the second invention is less than 1/20 of that of conventionally used stainless steel, the metal roller is applied to the conductive plating fiber yarn. The fluctuation of the current value when the constant current is supplied by contacting can be suppressed. In addition, since a hard metal equal to or higher than stainless steel having a Vickers hardness of about 180 is selected, even if the electric resistance measuring means is used for a long period of time, the metal roller for supplying current is hardly worn.

  The electrical resistance measuring means according to a third aspect of the present invention is an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber yarn having a non-metallic fiber as a core wire and metal-plated around the non-metallic fiber. The resistance measuring means includes a voltage measuring metal roller for measuring a voltage value applied to the conductive plated fiber yarn so as to form a pair, and at least the voltage measuring metal roller includes the first invention. The metal roller is used.

  Since the metal roller for voltage measurement is the metal roller of the first invention, the electric resistance value of the conductive plated fiber yarn can be accurately measured. Further, it is more preferable that the metal roller for supplying current is the metal roller of the second invention.

  The electrical resistance measuring means according to a fourth aspect of the present invention is an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber yarn having a metal wire plated around a non-metallic fiber as a core wire, The resistance measuring means includes a current supply metal roller for supplying a constant current to the conductive plating fiber yarn, and a voltage measurement metal roller for measuring a voltage value applied to the conductive plating fiber yarn. The metal roller according to the second aspect of the present invention is used as at least the metal roller for supplying current. Thereby, the wear of the metal roller for supplying current can be suppressed, and the maintenance work of the electrical resistance measuring means can be reduced.

  A fifth invention of the present invention is the electrical resistance measuring means of the fourth invention, wherein the pair of voltage measuring metal rollers are sandwiched between the pair of current supplying metal rollers, respectively. Are arranged side by side in one direction, and the conductive plating fiber yarn is alternately in contact with the upper peripheral surface and lower peripheral surface of adjacent metal rollers, and in a state of being in contact with a predetermined length, The electrical resistance value is measured.

  Since the contact length of the conductive plating fiber yarn in contact with the metal roller is a predetermined length, the contact electrical resistance between each metal roller and the conductive plating fiber yarn is reduced. The conductive plated fiber yarn is less likely to be separated from the metal roller, and the electric resistance value can be accurately measured.

  In addition, since the metal rollers are arranged side by side in one direction, electrical resistance measuring means can be placed in the middle of the path along which the conductive plated fiber yarn is moved, and the production line is linear. The number of conductive fibers that can be simultaneously plated by the plating apparatus can be increased.

  A sixth invention of the present invention is the electrical resistance measuring means of the fourth or fifth invention, wherein at least one of the metal rollers for supplying current includes a tension adjusting means, and the tension adjusting means comprises: When measuring the voltage of the conductive plating fiber yarn, the at least one metal roller is pressed against the conductive plating fiber yarn in a direction intersecting with an imaginary line connecting the axis of the metal roller for voltage measurement. Thus, each metal roller and the conductive plating fiber yarn are not separated from each other.

  The tension adjusting means may be, for example, a metal roller for supplying current that is a floating roller that can operate in the vertical direction by its own weight. Since the metal roller for supplying current presses the conductive plating fiber yarn from above, each metal roller for supplying current and the conductive plating fiber yarn are not separated from each other. Of course, the urging means may be attached to the current supply metal roller and may be pressed by the urging force.

  When contacting the metal roller for supplying current from under the conductive plating fiber yarn, press the metal roller for supplying current against the conductive plating fiber yarn by an urging means such as an air cylinder. Also good. The force for pressing the metal roller for supplying current may be a small force that does not separate the metal roller and the conductive plating fiber yarn, and may be a small air cylinder.

  In addition, since the tension adjusting means is provided only on the current supply metal roller and the position of the voltage measurement metal roller is fixed, even if the current supply metal roller is moved up and down, the conductive plating fiber The measurement length for measuring the voltage of the yarn does not change. Thereby, the mismeasurement by electroconductive plating fiber thread | sag can be suppressed.

  The seventh invention of the present invention is the electrical resistance measuring means of the fourth invention, wherein the pair of voltage measuring metal rollers are sandwiched between the pair of current supplying metal rollers, Are arranged side by side in one direction, and the conductive plated fiber yarn is in contact with one peripheral surface of the pair of metal rollers for voltage measurement, and the other of the pair of metal rollers for supplying current. A tension adjusting means is included in the pair of metal rollers for voltage measurement, both in contact with the peripheral surface and in contact with a predetermined length, and the tension adjusting means is used to measure the voltage of the conductive plated fiber yarn. In this case, the pair of metal rollers for voltage measurement are pressed against the conductive plating fiber yarn in a direction crossing an imaginary line connecting the axes of the pair of metal rollers for supplying current, and each metal roller and Separated from the conductive plating fiber yarn It is characterized in that it is as free.

  The tension adjusting means is, for example, a metal roller for voltage measurement which is a floating roller operable in the vertical direction, and in an integrated state, the metal roller for supplying current is electrically conductively plated by an urging means such as an air cylinder. It may be pressed against the thread. Since the metal roller for voltage measurement and the conductive plating fiber yarn are not separated and the conductive plating fiber yarn is not loosened, erroneous measurement can be suppressed.

  An eighth invention of the present invention is the electrical resistance measuring means according to the third to seventh inventions, wherein the pair of voltage measuring metal rollers includes wear suppressing means, and the wear suppressing means is a pair of Each of the rotation axes of the voltage measuring metal roller is disposed obliquely and in parallel with the conductive plating fiber yarn, and the conductive plating fiber yarn has a predetermined width on the peripheral surface of the metal roller. It is configured to be in contact with the range, and is characterized by suppressing wear of the metal plating layer forming each of the pair of metal rollers for voltage measurement.

  The conductive plating fiber yarn is in contact with a predetermined width range of the peripheral surface of the metal roller. Therefore, it is possible to suppress the wear of the metal plating layer compared to the case where the peripheral surface of the metal roller and the conductive plating fiber yarn are contacted with the width of the thickness of the conductive plating fiber yarn as in the conventional case. it can. Therefore, even if the metal plating layer provided on the metal roller for voltage measurement is a gold plating layer / silver plating layer having a small Vickers hardness, it is difficult to be worn out. Further, the rotation axis of the metal roller is merely disposed obliquely and parallel to the conductive plated fiber yarn, and wear of the metal roller can be suppressed with a simple configuration.

  As a result, the contact electrical resistance is small, and the electrical resistance value of the conductive plating fiber yarn can be accurately measured. In addition, even if the metal roller has a metal plating layer that is soft and easily worn, the metal roller replacement period can be reduced. There is an advantageous effect that it can be lengthened.

  A ninth invention of the present invention is the electrical resistance measuring means according to the third to seventh inventions, wherein the pair of voltage measuring metal rollers includes wear suppressing means, and the wear suppressing means includes a pair of The voltage measuring metal roller includes an advancing / retreating means for advancing and retreating in the axial direction, and the advancing / retreating means changes the position where the conductive plating fiber yarn and the metal roller for voltage measurement are in contact with each other. It is characterized by suppressing the wear of the plating layer.

  The advancing / retreating means provided in the voltage measuring metal roller changes the position where the conductive plated fiber yarn contacts the voltage measuring metal roller. Therefore, the range in which the conductive plated fiber yarn contacts the voltage measuring metal roller can be widened. The width by which the metal roller is advanced and retracted by the advance / retreat means may be about 5 mm, but may be appropriately selected according to the thickness of the conductive plating fiber yarn, the width of the roller portion of the metal roller, and the like. Thereby, abrasion of the metal plating layer provided in the metal roller for voltage measurement can be suppressed.

  A plating apparatus according to a tenth aspect of the present invention is a plating apparatus including an electroless plating process in which a non-metallic fiber is sent out as a core wire and metal is plated around the non-metallic fiber. Including a resistance measuring means, a speed control means for adjusting the speed at which the plated fiber yarn is fed, and a storage means for storing a first set electrical resistance value and a second set electrical resistance value, The set electric resistance value is an upper limit allowable electric resistance value, the second set electric resistance value is an abnormal electric resistance value, and the speed control means is configured such that the electric resistance value measured by the electric resistance measuring means is the first electric resistance value. When the set electrical resistance value of 1 is exceeded, in the electroless plating step, the feeding rate of the conductive plating fiber yarn is slowed and the electrical resistance measured by the electrical resistance measuring means There if it exceeds the second setting electric resistance is characterized by stopping the feeding of the conductive plating yarn in the electroless plating process.

  When the film thickness of the plating layer formed around the conductive plating fiber yarn is small, the electric resistance value becomes large. When the electrical resistance value measured by the electrical resistance measuring means exceeds the first set electrical resistance value that is the upper limit allowable electrical resistance value, the speed control means sets the feed rate of the conductive plated fiber yarn. Make me slow. If the feeding speed of the conductive plating fiber yarn is slowed down, the bath time of the conductive plating fiber yarn in the electroless plating process is lengthened, the thickness of the plating layer of the conductive plating fiber yarn is increased, and the upper limit allowable electrical resistance value Can be kept within the range.

  When the electrical resistance value measured by the electrical resistance measuring means exceeds the second set electrical resistance value which is an abnormal electrical resistance value, the feeding of the conductive plating fiber yarn is stopped in the electroless plating step I will let you. When an abnormal resistance value suddenly occurs, the feeding of the conductive plating fiber yarn can be stopped in the electroless plating process, and only the portion of the conductive plating fiber yarn where the abnormality has occurred can be discarded. . Thereby, the overall production efficiency can be improved.

  A plating apparatus according to an eleventh aspect of the present invention is a plating apparatus including an electroless plating step in which a non-metallic fiber is sent out as a core wire and metal is plated around the non-metallic fiber. Including a resistance measuring means, a speed control means for adjusting the speed at which the plated fiber yarn is fed out, and a storage means for storing a third set electrical resistance value, wherein the third set electrical resistance value is lower limit allowable. When the electric resistance value measured by the electric resistance measuring unit is lower than a third set electric resistance value, the speed control unit is configured to perform the electroconductivity in the electroless plating step. It is characterized by increasing the feeding speed of the plated fiber yarn.

  If the film thickness of the plating layer provided in the conductive plating fiber yarn has a predetermined thickness, the function as the conductive wire is maintained. Therefore, in the eleventh invention, when the electric resistance value measured by the electric resistance measuring means is lower than the third set electric resistance value, in other words, when there is a necessary and sufficient film thickness. The feeding speed of the conductive plated fiber yarn is increased by the speed control means. Thereby, a long electroconductive plating fiber thread | yarn can be produced even in the same time, and the plating apparatus with high production efficiency can be provided.

-According to 1st invention of this invention, the electrical resistance value of electroconductive plating fiber thread | yarn can be measured correctly, and productivity of plating fiber thread | yarn can be improved.
-According to 2nd invention of this invention, the fluctuation | variation of the electric current value at the time of making a metal roller contact a conductive plating fiber yarn and supplying a constant current can be suppressed. Further, the metal roller for supplying current is not easily worn, and the replacement cycle of the metal roller can be lengthened.
-According to 3rd invention of this invention, the electrical resistance value of electroconductive plating fiber thread | yarn can be measured correctly.

According to the fourth aspect of the present invention, it is possible to suppress the wear of the current supply metal roller, and to reduce the maintenance work of the electric resistance measuring means.
According to the fifth aspect of the present invention, the contact electrical resistance is reduced and the conductive plated fiber yarn is less likely to be separated from the metal roller, so that the electrical resistance value can be accurately measured.
-According to the sixth and seventh inventions of the present invention, erroneous measurement due to sagging of the conductive plated fiber yarn can be suppressed.

-According to the eighth and ninth inventions of the present invention, even a metal roller having a metal plating layer that is soft and easily worn out has an advantageous effect that the replacement cycle of the metal roller can be lengthened.
-According to the tenth and eleventh aspects of the present invention, a plating apparatus capable of improving the overall production efficiency can be obtained.

Explanatory drawing explaining an electrical resistance measurement means (Example 1). Explanatory drawing explaining a plating apparatus (Example 1). Explanatory drawing explaining a tension | tensile_strength adjustment means (Example 2). Explanatory drawing explaining a tension | tensile_strength adjustment means (Example 3). Explanatory drawing explaining an abrasion suppression means (Example 4). Explanatory drawing explaining an abrasion suppression means (Example 5). Explanatory drawing explaining the plating apparatus provided with the speed control means (Example 6). Explanatory drawing explaining an example of the change of an electrical resistance value (Example 6).

  In order to improve the productivity of the conductive plating fiber yarn, the electric resistance value of the conductive plating fiber yarn can be accurately measured, and the maintenance labor of the electric resistance measuring means is reduced. Furthermore, according to the plating film thickness of electroconductive plating fiber thread | yarn, it was set as the plating apparatus which adjusts the sending speed of electroconductive plating fiber thread | yarn, and improves productivity.

  In the first embodiment, the metal rollers 10 and 20 are plated with a highly conductive metal, and the metal rollers are arranged side by side in the horizontal direction, and the conductive plating fiber yarns 90 are adjacent metal rollers. A plating apparatus 100 in which the electrical resistance is measured while alternately contacting the upper peripheral surface and the lower peripheral surface and in contact with a predetermined length will be described with reference to FIGS. 1 and 2.

  FIG. 1 is an explanatory diagram for explaining the configuration of the electrical resistance measuring means 1. 1A shows a perspective view of the metal roller, and FIG. 1B shows an explanatory view for explaining a contact state between the metal rollers 10 and 20 and the conductive plated fiber yarn 90. FIG. FIG. 1 (C) shows a schematic diagram of the electrical resistance measuring means 1. FIG. 1D shows an explanatory diagram for briefly explaining the structure of the slip ring 30. In FIG. 1D, the metal roller and the slip ring are partially cut away in cross-sectional view for easy understanding. FIG. 2 (A) shows an overall schematic diagram of the plating apparatus 100, and FIG. 2 (B) shows a schematic diagram of a production line for one conductive plated fiber yarn.

  The electrical resistance measuring means 1 is provided with a voltage measuring metal roller 10 and a current supplying metal roller 20 in pairs. The pair of voltage measuring metal rollers 10, 10 are sandwiched between a pair of current supply metal rollers 20, 20, and each metal roller is laterally extended along the direction in which the conductive plated fiber yarn 90 extends. They are arranged side by side in the direction (see FIG. 1A).

  The conductive plating fiber yarns 90 are alternately brought into contact with the upper peripheral surface and the lower peripheral surface of adjacent metal rollers (between FIG. 1 (B) and ab), and between the conductive plating fiber yarns 90 and the metal. The roller is in contact with a predetermined length. In the first embodiment, the vertical heights of the respective metal rollers 10 and 20 are set to substantially the same height, but the vertical positions of the respective metal rollers are not limited, and conductive plated fibers. What is necessary is just to set it as the position where a thread | yarn contacts a metal roller.

  The metal roller 10 for voltage measurement has a main body made of stainless steel, and has a metal plating layer 11 having high conductivity on its peripheral surface. The highly conductive metal plating layer 11 is made of gold, silver, copper, or any of these two or more alloys.

  Moreover, the film thickness of the metal plating layer 11 is not limited, and may be appropriately selected according to the type of metal of the metal plating layer. For example, if it is a gold plating layer, the plating film thickness should just be 1 micrometer-10 micrometers from a viewpoint of cost. If it is a silver plating layer, a copper plating layer, or an alloy plating layer, the metal plating layer may be made thick, and the plating film thickness may be 10 μm to 20 μm.

  Here, the slip ring 30 on which the metal roller is rotatably mounted will be briefly described with reference to FIG. The slip ring is a connector that can transmit a power / electrical signal between the rotating shaft portion and the outside by rotating the rotating shaft portion around the shaft portion. A metal roller 10 is attached to the tip of the rotary shaft 31 of the slip ring. Through holes 12 and 32 are provided in the central portion of the metal roller and the rotation shaft portion along the axial direction, and a conductive wire 33 grounded to the metal roller extends toward the base portion of the rotation shaft portion 31.

  A plurality of metal ring portions 36 that are integral with the rotation shaft portion are attached to the base portion of the rotation shaft portion 31, and a conductive brush portion 39 is in contact with the peripheral surface of the metal ring 36. The conductive wire 33 extending from the metal roller is grounded to the conductive brush portion 39 via the metal ring portion 36, and an accurate power / electric signal is transmitted between the metal roller and the conductive brush portion 39.

  The metal roller 10 is detachably attached to the tip of the rotating shaft portion 31 of the slip ring. The metal roller is rotated integrally with the rotating shaft portion 31, the conductive wire 33, and the metal ring portion 36. On the other hand, the frame portion 37 of the slip ring and the conductive wire 38 extending from the frame portion are not rotated. In addition, a conductive wire 33 with insulating coating extends toward the metal ring portion 36 through the through hole 32. In addition, the conductive wire 33 penetrating through the through hole is connected to each of the plurality of metal ring portions 36 that are integral with the rotating shaft portion 31.

  Further, a connecting terminal 34 having a bifurcated tip is provided at the tip of the conductive wire 33, and the connecting terminal and the metal roller 10 are easily attached and detached by a screw 35. When a current is supplied from the conductive plating fiber yarn 90 to the metal roller 10, the current is sequentially transmitted to the metal roller 10, the connection terminal 34, the conductive wire 33, the metal ring portion 36, and the conductive brush portion 39 (FIG. 1 ( D) See figure). In the current supply metal roller 20, this transmission path is reversed.

  Next, the metal roller 20 for supplying current will be described. The configuration of the metal roller 20 for supplying current is the same as that of the metal roller 10 for voltage measurement except that the material of the metal plating layer 21 is different. Therefore, the description other than the metal plating layer is omitted. . The current supply metal roller 20 is also made of stainless steel, and has a metal plating layer 21 having high conductivity and high Vickers hardness on its peripheral surface.

  Specifically, a gold-cobalt alloy plating layer having a Vickers hardness of 150 to 200, a gold-nickel alloy plating layer having a Vickers hardness of 280 to 320, a gold-copper alloy plating layer having a Vickers hardness of 250 to 380, and a Vickers Any metal plating layer selected from a hard silver plating layer having a hardness of 100 to 230 and a hard copper plating layer having a Vickers hardness of 150 to 250 is formed. The film thickness of the metal plating layer is not limited.

  Here, with reference to FIG. 1C, a method of measuring the electrical resistance value by the four-terminal measurement method will be briefly described. The electrical resistance measuring means 1 supplies a current from the power source 80 to the conductive plated fiber yarn 90 via the current-supplying metal rollers 20, 20, and conducts electricity between the two voltage-measurement metal rollers 10, 10. The voltmeter 81 measures the voltage value of the plated fiber yarn (part e in FIG. 1C). The measured voltage value is converted into a digital signal by the analog / digital converter 82 and transmitted to the central processing unit 83. The central processing unit 83 divides the measured voltage value by the input current, thereby calculating the electrical resistance value of the conductive plated fiber yarn and storing the result.

  Next, the plating apparatus 100 (refer FIG. 1) provided with the electrical resistance measurement means 1 is demonstrated with reference to each figure of FIG. The plating apparatus 100 is arranged in the order of the core wire sending section 110, the plating bath 120, the water washing apparatus 130, the drying apparatus 140, the electric resistance measuring means 1, and the conductive plating fiber yarn winding section 150, starting from the left side in the figure. Thus, a production line for producing a plurality of conductive plated fiber yarns is formed (see the arrow in FIG. 2A).

  The core wire sending section 110 of the plating apparatus is provided with a plurality of yarn feeding rollers 111 so that a plurality of core wires 91 can be plated simultaneously. A plurality of yarn feeding rollers 111 are mounted with a core wire 91 forming a conductive plating fiber yarn wound around a bobbin. The core wire sending section 110 is provided with the same number of pinch rollers 112 as the yarn feeding rollers 111 and a dancer 113 for adjusting the tension of the yarn, and the core wire 91 is sent to the plating bath 120 so as not to be too tight. . The material of the core wire may be polymer fibers (including natural fibers such as silk and resin fibers such as aramid fibers), carbon fibers, and ceramic fibers (including glass fibers). The core wire may be a single fiber or a fiber bundle in which single fibers are bundled. The core wire is subjected to a pretreatment process such as a supercritical plating pretreatment prior to the electroless plating bath.

  In the plating bath 120, the core wire 91 is subjected to an electroless plating bath, and a plating layer is formed around the core wire (see FIG. 2B). The bath conditions of the electroless plating bath are not limited. For example, in the case of a plating bath using electroless copper, the main components of the copper plating solution are 10 g of copper sulfate and 2 to 3 g of a formaldehyde solution (35% by weight aqueous solution) as a reducing agent per liter of the copper plating aqueous solution. . The bath temperature is 40 to 50 ° C., the pH is 8 to 13, and the bath time is 5 to 15 minutes. Under the bath conditions of this electroless plating bath, an electroless copper plating layer of 0.2 μm to 0.5 μm is formed around the core wire 91.

In addition, the plating bath in the plating bath 120 is not limited to the electroless plating bath, and it goes without saying that an electroplating bath may be included in succession to the electroless plating bath. For example, in the case of a copper sulfate plating bath, the copper plating solution is 180 to 250 g of copper sulfate, 45 to 60 g of sulfuric acid (98% by weight of sulfuric acid component), and the bath temperature is 20 to 35 ° C. per liter of the aqueous solution of copper sulfate plating. Is done. The current density is 0.5 to 5 A / dm ² , and the plating bath time is 5 to 30 minutes. A copper sulfate plating layer having a thickness of 1.0 to 5 μm is formed under the bath conditions of this electroplating bath.

  After the plating bath process in the plating bath, the conductive plating fiber yarn 90 is sent in the order of the water washing device 130 and the drying device 140, washed with water and dried, and then the electric resistance value is measured by the electric resistance measuring means 1. Then, the conductive plated fiber yarn 90 whose electric resistance value has been measured is taken up by a take-up roller 151 that rotates in synchronization with the yarn feed roller 111.

  In the second embodiment, an embodiment of the electrical resistance measuring means 2 provided with the tension adjusting means 40 will be described with reference to FIG. FIG. 3A shows a side view of the metal roller 20 for supplying current. FIG. 3B shows a state before the current supply metal roller 20 is pressed against the conductive plated fiber yarn 90 by the tension adjusting means 40, and FIG. 3C shows the state after the pressing. Show. In FIG. 3B, a virtual line 43 connecting the axes of the current supply metal rollers is indicated by a one-dot chain line.

  Of the pair of current supply metal rollers 20, the metal roller 23 in which the conductive plating fiber yarn is in contact with the lower peripheral surface is a floating roller that can be moved up and down, and is used as the tension adjusting means 40. Yes. The tension adjusting means is the weight of the metal roller 23 and the leaf spring 41. The leaf spring 41 is attached to the lower surface side of the top plate portion 42 and presses the current supply metal roller 23 in a direction intersecting the virtual line 43 (upward and downward in the drawing) (FIG. 3B). (See the white arrow in the figure). The tension adjusting means 40 is not limited to a leaf spring, and may be any known urging means. Alternatively, the metal roller may be moved by an air cylinder, a servo motor, or the like, and pressed against the conductive plated fiber yarn 90.

  The conductive plating fiber yarn 90 is stretched so as to alternately contact the upper peripheral surface and the lower peripheral surface of each of the metal rollers 10 and 20. Therefore, when one metal roller 23 is pressed against the conductive plating fiber yarn 90, tension is applied to the conductive plating fiber yarn 90 in contact with the metal rollers 10 and 20, and the conductive plating fiber yarn and (See FIG. 3 (C) arrow).

  The pressing of the metal roller against the conductive plating fiber yarn by the tension adjusting means 40 may be performed with a small force so that the conductive plating fiber yarn 90 and each of the metal rollers 10 and 20 are not separated from each other. For example, the height at which the conductive plated fiber yarn is pushed down by the tension adjusting means may be about 5 mm to about 10 mm (see FIG. 3C, width f). Therefore, even a small pressing force by the weight of the metal roller and a small leaf spring functions sufficiently.

  As a result, the conductive plated fiber yarns and the respective metal rollers are not separated from each other, and erroneous measurement of the electrical resistance value can be prevented. In addition, since the tension adjusting means has a simple configuration using a floating roller and a leaf spring, the electrical resistance measuring means 2 is not increased in size, and many electrical resistance measuring means are provided in a limited space on the plating apparatus line. It becomes easy to arrange.

  In the third embodiment, another embodiment of the electric resistance measuring means 3 using the air cylinder 50 as a tension adjusting means will be described with reference to FIG. FIG. 4A shows a side view of the metal roller 10 for voltage measurement. 4B shows a state before the voltage measuring metal roller 10 is pressed against the conductive plated fiber yarn 90 by the air cylinder 50, and FIG. 4C shows the state after being pressed. Show. In FIG. 4B, the phantom line 52 connecting the axis of the voltage measuring metal roller is indicated by a one-dot chain line.

  In the third embodiment, both of the pair of voltage measuring metal rollers 10 and 10 are floating rollers that are integrally moved up and down. The tension adjusting means is an air cylinder 50 provided below the metal roller 10 for voltage measurement. The air cylinder 50 presses the voltage measuring metal roller 10 in a direction intersecting with a virtual line 52 that connects the axes of the current supplying metal rollers (FIG. 4B, white arrows). The pushed-up height (see FIG. 4C, width g) may be about 5 mm to 10 mm as in the second embodiment.

  In addition, a flat plate 51 that connects a pair of metal rollers 10 and 10 for voltage measurement is provided at the tip of the forward / backward axis of the air cylinder 50. When the flat plate 51 pushes up the lower surfaces of the two slip rings 30, the relative positional relationship between the pair of voltage measuring metal rollers 10 and 10 is not changed and is pressed against the conductive plated fiber yarn 90 (FIG. 4). (B) White arrow in the figure). And tension | tensile_strength acts on the electroconductive plating fiber thread | yarn 90, and sagging is prevented (FIG.4 (C) figure arrow). In addition, since it is sufficient to generate a slight force with an air cylinder, a small air cylinder is sufficient, and the arrangement space for the electrical resistance measuring means 3 is not enlarged.

  The conductive plated fiber yarn 90 includes a pair of current supply metal rollers 20 and 20 on both sides, and a pair of voltage measurement metal rollers 10 and 10 sandwiched therebetween. (Refer to FIG. 4B). Therefore, when the voltage measuring metal roller 10 is pressed against the conductive plated fiber yarn 90, the measured length of the conductive plated fiber yarn (see FIG. 4B, FIG. 4C and FIG. Hi). Will not change.

  In the fourth embodiment, an example of the electrical resistance measurement unit 4 provided with the wear suppression unit 60 will be described with reference to FIG. 5A shows a plan view of the electrical resistance measuring means 4 and the wear suppression means 60, FIG. 5B shows a side view of the metal roller 10, and FIG. 5C shows the metal roller. 10 is an explanatory diagram for explaining the contact length between 10 and the conductive plated fiber yarn 90. FIG. FIGS. 5D to 5F show, as a comparative example, a case in which the upper peripheral surface of the metal roller is brought into contact with the width of the conductive plated fiber yarn.

  The wear suppression means 60 is configured such that the rotation shafts 13 and 13 of the pair of voltage measuring metal rollers are arranged obliquely and in parallel with the conductive plating fiber yarn 90. Then, the conductive plated fiber yarn 90 comes into contact with a predetermined width range (between FIG. 5B and FIG. 5C) jk on the peripheral surface of the metal roller 10. Therefore, compared with the case where the conductive plating fiber yarn and the metal roller are brought into contact with each other with the width of the conductive plating fiber yarn without the wear suppression means (FIG. 5D to FIG. 5F). Thus, the contact area between the conductive plating fiber yarn 90 and the metal plating layer 11 is increased, and wear of the metal plating layer 11 is suppressed.

  In the fifth embodiment, an example of the electrical resistance measuring means 5 provided with the advancing / retreating means 70 constituting the wear suppression means will be described with reference to FIG. FIG. 6 (A) shows a side view of the electrical resistance measuring means 5 and the advance / retreat means 70, and FIG. 6 (B) shows a plan view thereof. FIG. 6C and FIG. 6D show a state where the position where the conductive plated fiber yarn 90 contacts the metal roller 10 is changed by the advance / retreat means 70. Note that the rotation direction and the movement direction described below all indicate directions in the figure.

  The advancing / retreating means 70 is a flat body 74 that is spanned between a servo motor 71, a gear gear 72, a spur gear 73, and a voltage measuring metal roller. The gear gear 72 is mounted on the drive shaft of the servo motor 71 and is engaged with the spur gear 74. The spur gear 73 is disposed on the upper surface of the flat plate 74 and transmits the driving force of the servo motor 70 to the metal roller 10.

  When the servo motor 70 is rotated clockwise, the metal roller 10 is moved forward, and the conductive plated fiber yarn 90 is moved from the center of the roller peripheral surface of the metal roller 10 to the right side (FIG. 6A). (See FIG. 6C). When the servo motor 70 is rotated counterclockwise, the conductive plated fiber yarn 90 is moved from the center of the roller peripheral surface of the metal roller 10 to the left side (see FIG. 6D). The contact point between the conductive plated fiber yarn 90 and the metal roller 10 is dispersed in a width (see FIG. 6C, FIG. 6D, and width m) in which the metal roller 10 is advanced and retracted. Therefore, wear of the metal plating layer is suppressed. In addition, the width | variety by which the metal roller 10 is advanced / retracted should just be selected according to the thickness of electroconductive plating fiber yarn. Since the width of the conductive plating yarn in which 267 filaments having a wire diameter of 12 μm per single fiber are gathered is about 1 mm, it may be advanced and retracted with a width of about 5 mm to 10 mm.

  In Example 6, a plating apparatus 200 provided with speed control means 210 will be described with reference to FIGS. 7 and 8. FIG. 7A shows an explanatory view for explaining the plating apparatus 200, and FIG. 7B shows an explanatory view for explaining the configuration of the speed control means 210. FIG. 8 is a graph showing an example of the measured electric resistance value. 8A shows the case where the measured electrical resistance value 300 exceeds the first set electrical resistance value 230, and FIG. 8B shows the measured electrical resistance value 310 being the second set electrical resistance value. The case where 240 is exceeded is shown. FIG. 8C shows a case where the measured electrical resistance value 320 is lower than the third set electrical resistance value 250.

  The speed control unit 210 includes a storage unit 211 and a control unit 217. The storage unit 211 includes first to third set electrical resistance value storage units 212, 213, and 214, a set speed storage unit 215 that stores the speed at which the core wire 91 is sent out, and a measurement that stores the measured electrical resistance value. And an electrical resistance value storage unit 216. As the first to third set electrical resistance values and set speed values, numerical values input in advance from the input unit 220 are stored. The measured electrical resistance value storage unit 216 stores the electrical resistance value calculated by the central processing unit 83.

  The control unit 217 includes a delivery speed control unit 218 and an electrical resistance value evaluation unit 219. In the initial state, the delivery speed control unit 218 uses the set speed value stored in the set speed storage unit 215 to send out the core wire 91 at a predetermined delivery speed. The electrical resistance value evaluation unit 219 compares the measured electrical resistance value with preset first to third set electrical resistance values, and accelerates, stops, or decelerates the delivery speed according to the result. So that the sending speed control unit 218 transmits the change.

  Next, specific changes in the measured electrical resistance value will be described with reference to FIGS. 8A to 8C. When it is evaluated that the measured electrical resistance value 300 exceeds the first set electrical resistance value 230, an electrical command is transmitted from the electrical resistance value evaluation unit to the feed rate control unit so as to slow the feed rate of the core wire. If it does so, the plating bath time in a plating apparatus will become comparatively long, and the plating film thickness of the electroconductive plating fiber yarn 90 will become thick. As a result, the electrical resistance value 300 of the conductive plated fiber yarn is reduced, and the second set electrical resistance value 240 is prevented from being exceeded (see FIG. 8A).

  If the measured electrical resistance value 310 suddenly exceeds the second set electrical resistance value 240, an electrical command is transmitted from the electrical resistance value evaluation unit to the delivery speed control unit so as to stop the delivery, and the conduction Of the electroplated fiber yarn is stopped. And it excludes from shipping object as electroconductive plating fiber yarn containing an abnormal part (refer to Drawing 8 (B) figure).

  On the other hand, when it is evaluated that the measured electrical resistance value 320 is lower than the third set electrical resistance value 250, an electrical command is transmitted from the electrical resistance value evaluation unit to the delivery speed control unit so as to speed up the delivery. . By accelerating the feeding speed, the plating bath time in the plating apparatus becomes relatively short, and even in the same time, a long conductive plated fiber yarn can be manufactured, and the production efficiency is improved (FIG. 8C). reference).

(Other)
-In Example 1, although the example which equips a plating apparatus with an electrical resistance measurement means and measured the electrical resistance value of electroconductive plating fiber yarn continuously with a plating process was demonstrated, an electrical resistance value was independent of the plating process. May be measured. For example, the conductive plating fiber yarn wound around the bobbin after the plating step may be transferred from the plating apparatus to another winding apparatus, and the electric resistance value may be measured while being wound around another bobbin.
-The electrical resistance measuring means by this invention is not limited to the case where it integrates in a plating apparatus etc., It is good also as an independent portable electrical resistance measuring means. Of course, it is also possible to use electrical resistance measuring means provided with only a pair of voltage measuring metal rollers.
In order to facilitate understanding, the presently disclosed invention has been described with the production line shown in a straight line, but it is needless to say that the invention is not limited thereto.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

1, 2, 3, 4, 5 ... electric resistance measuring means, 100, 200 ... plating apparatus,
DESCRIPTION OF SYMBOLS 10 ... Metal roller, 11 ... Metal plating layer, 12 ... Through-hole, 13 ... Rotating shaft,
20, 23 ... Metal roller, 22 ... Metal plating layer,
30 ... slip ring, 31 ... rotating shaft, 32 ... through hole, 33, 38 ... conductive wire,
34 ... Connection terminal, 35 ... Screw, 36 ... Metal ring part, 37 ... Frame body part, 39 ... Conductive brush part,
40 ... tension adjusting means, 41 ... leaf spring, 42 ... top plate, 43 ... virtual line,
50 ... Air cylinder, 51 ... Flat plate, 52 ... Virtual line,
60 ... wear-inhibiting means, 70 ... advance / retreat means, 71 ... servo motor, 72 ... gear gear,
73 ... Spur gear, 74 ... Flat plate, 80 ... Power source, 81 ... Voltmeter,
82 ... analog / digital converter, 83 ... central processing unit,
90 ... conductive plated fiber yarn, 91 ... core wire,
110: Core wire feeding unit, 111: Yarn feeding roller, 112 ... Pinch roller,
113 ... Dancer, 120 ... Plating bath, 130 ... Flushing device,
140 ... drying device, 150 ... winding section, 151 ... winding roller,
210 ... speed control means, 211 ... storage unit, 212 ... first set electrical resistance value storage unit,
213: second set electrical resistance value storage unit, 214: third set electrical resistance value storage unit,
215: Setting speed storage unit, 216: Measurement electric resistance value storage unit, 217 ... Control unit,
218 ... Sending speed control unit, 219 ... Electric resistance value evaluation unit,
220 ... input unit, 230 ... first set electrical resistance value, 240 ... second set electrical resistance value,
250 ... second set electric resistance value, 300, 310, 320 ... measured electric resistance value

  The present invention relates to a metal contained in an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber thread having a metal wire plated around a non-metallic fiber made of polymer fiber, carbon fiber, ceramic fiber, etc. as a core wire. The present invention relates to a roller, electrical resistance measuring means, and a plating apparatus. More specifically, the present invention relates to a metal roller, electrical resistance measuring means, and a plating apparatus that can improve the productivity of conductive plated fiber yarns without erroneously measuring the electrical resistance value of the conductive plated fiber yarns. Furthermore, it is related with the plating apparatus which can adjust plating time according to the measurement result of the electrical resistance value of electroconductive plating fiber yarn, and can improve productivity more.

  Conventionally, as a method for measuring the electrical resistance value of a conductive plating fiber yarn, a method of measuring an electrical resistance value by bringing a plurality of metal rollers into contact with a conductive plating fiber yarn which is plated and sent is known. Yes. Specifically, a two-terminal measurement method and a four-terminal measurement method are known. Measure the voltage applied to the conductive plating fiber yarn by moving the conductive plating fiber yarn while making contact between the pair of metal rollers and passing a constant current from the pair of metal rollers. Then, the electric resistance value is calculated by dividing the voltage value by the current value.

  The metal roller included in the conventional electrical resistance measuring means is made of stainless steel so that the roller portion is not easily worn even when the conductive plated fiber yarn is slid over a long period of time. However, due to the low conductivity of the stainless steel metal roller, even if a plating layer with a necessary and sufficient thickness is formed on the surface of the conductive plated fiber yarn, its electrical resistance The value was erroneously measured as being outside the allowable range, and it was sometimes determined that the plating was defective.

  If a part of the conductive plating fiber thread that has been satisfactorily plated has a defective plating, the conductive plating fiber thread of a lot unit or a considerable length, including the defective part, should be removed. It had to be disposed of, which was one of the causes of yield loss. In order to improve the productivity of the conductive plating fiber yarn, an electric resistance measuring means capable of accurately measuring the electric resistance value of the plated conductive plating fiber yarn has been required.

  In addition, in order to improve productivity, the plating apparatus for conductive plating fiber yarns moves a plurality of conductive plating fiber yarns in parallel in one plating space that is narrow and long, It is made to plate at the same time. Then, the electric resistance value is measured by one electric resistance measuring means for each conductive plated fiber yarn so as to be continued to a plating step of plating a plurality of conductive plated fiber yarns.

  In order to improve productivity, if you try to increase the number of conductive plating fiber yarns that simultaneously pass through a narrow plating space, the electrical resistance corresponding to the number of fiber wires with the same length as conventional plating equipment The electrical resistance measuring means must be downsized so that the measuring means can be arranged.

  Patent Document 1 discloses a technique of an electrical resistance measurement method and a measurement apparatus in which an electrical resistance value of a conductive fiber yarn is measured by a two-terminal method using a pair of metal rollers. According to the technology described in Patent Document 1, electric current is supplied from a pair of rotatable metal rollers arranged at intervals, and an electrical resistance value is measured by bringing a conductive fiber yarn into contact between the metal rollers. I am letting. In order to suppress wear of the metal roller, a hard chromium plating layer may be provided on the surface of the metal roller. In addition, when measuring the electrical resistance value, it is said that tension is applied to the conductive fiber yarn using a tension roller so that the conductive fiber yarn is brought into contact with the metal roller under a certain tension so that the conductive fiber yarn does not loosen. ing.

  However, according to the technique of the two-terminal measurement method described in Patent Document 1, the electrical resistance value obtained by adding the electrical resistance value of the conductive fiber yarn itself and the contact electrical resistance between the conductive fiber yarn and the metal roller is measured. Will be. However, there is a problem that it is difficult to accurately measure the electrical resistance value of the conductive fiber yarn because the ratio of the contact electrical resistance to the total electrical resistance value is high.

  In addition, when a hard chromium plating layer is provided, the electrical resistance value of chromium is about 5 to 8 times higher than that of highly conductive gold, silver, copper, etc., and the contact electrical resistance of chromium The value is about 5000 times that of gold / silver having a small contact electric resistance value and about 25 times that of stainless steel. Then, when the hard chrome plating layer is provided, there is a problem that the measurement accuracy of the electrical resistance value of the conductive fiber yarn is lowered even though the wear of the metal roller can be suppressed.

  Patent Document 2 discloses a technique of an electrical resistance measurement method and a measurement apparatus in which an electrical resistance value of a conductive fiber yarn is measured by a four-terminal method using two pairs of metal rollers. According to the technique described in Patent Document 2, it is said that the influence of the contact electrical resistance between the metal roller and the conductive fiber yarn can be reduced. Specifically, by measuring the electrical resistance value while holding the conductive fiber yarn sandwiched from above and below by means of four sets of metal rollers and rubber rollers arranged in series, a constant length of conductivity It is said that the electrical resistance value of the fiber yarn can be measured.

  However, since the electrical resistance value is measured in a state where the conductive fiber yarn is sandwiched between the metal roller and the rubber roller, there is a problem that the plating layer formed on the conductive plating fiber yarn may be peeled off. It was. Furthermore, when the rotation of the pair of rollers becomes non-uniform, the fibers may be broken, and the broken fibers may be entangled with the rollers, which may require maintenance. In addition, it is necessary to inspect the worn state of the rubber roller and whether or not the debris from which the rubber roller has been worn adheres to the surface of the metal roller, and there is a problem in that maintenance is troublesome.

Patent Document 1: Japanese Patent Laid-Open No. 7-146318 Patent Document 2: Japanese Patent Laid-Open No. 2001-221819

  The problem to be solved by the present invention is to measure the electric resistance value of a conductive plated fiber yarn in which a non-metallic fiber made of a polymer fiber, a carbon fiber, a ceramic fiber or the like is used as a core wire and metal is plated around it. It is to provide a metal roller, electrical resistance measuring means and plating apparatus included in the measuring means. More specifically, the present invention provides a metal roller, electrical resistance measuring means, and a plating apparatus that can improve the productivity of conductive plated fiber yarns without erroneously measuring the electrical resistance value of the conductive plated fiber yarns. That is. Furthermore, it is to provide a plating apparatus capable of adjusting the plating time in accordance with the measurement result of the electrical resistance value of the conductive plating fiber yarn and further improving the productivity.

  The electrical resistance measuring means according to the first aspect of the present invention is an electrical resistance measuring means for measuring an electrical resistance value of a conductive plated fiber yarn having a non-metallic fiber as a core wire and metal-plated on the periphery thereof. A pair of metal rollers for supplying a current for supplying a constant current to the conductive plated fiber yarn, which is suitable for measuring the electric resistance value of the conductive plated fiber yarn before being sent to the winding roller after the process, A pair of metal rollers for voltage measurement for measuring a voltage value of a constant current supplied to the conductive plating fiber yarn, and the pair of metal rollers for voltage measurement is provided with gold, silver and copper on the roller peripheral surface. And a metal plating layer of any metal selected from these two or more alloys, and the pair of metal rollers for voltage measurement is between the pair of metal rollers for current supply To be pinched The conductive plated fiber yarns are alternately in contact with the upper peripheral surface and the lower peripheral surface of each adjacent metal roller in a bent state, and around the pair of metal rollers for voltage measurement. The electrical resistance value is measured in a state in which the surface is in a circular arc shape.

  The conductive plated fiber yarn refers to a fiber yarn in which conductivity is imparted to a non-metallic fiber forming a core wire such as a polymer fiber, a carbon fiber, or a ceramic fiber by providing a plating layer around the core wire. . The fiber forming the core wire may be a single fiber or a fiber bundle. The plating layer provided around the core wire is not limited to the case where only the electroless plating layer is formed, and the electroplating layer may be laminated on the electroless plating layer. Moreover, the metal material of the plating layer provided around the core wire is not limited.

  The metal roller for voltage measurement has a metal plating layer of any metal selected from gold, silver, copper, and these two or more alloys on the peripheral surface of the roller. Compared with a conventional metal roller made of stainless steel, the electrical resistance value is about 1 / 25th of gold, and copper / silver is about 1 / 40th, and the electrical conductivity in the metal is excellent. Compared with a conventional metal roller made of stainless steel, the contact electrical resistance value is about 1/200 or less for gold and silver and about 1/15 or less for copper. Is also excellent. Regardless of whether it is a single metal of gold, silver, or copper, the conductivity in the metal and at the metal contact area is improved compared to conventional stainless steel. Errors in measurement can be reduced.

  In particular, when the metal plating layer is made only of gold, the contact electric resistance can be minimized among the metals, and the voltage value can be measured with higher accuracy, which is preferable. On the other hand, if any of gold and silver, gold and copper, silver and copper, or an alloy of gold, silver, and copper is used, the contact electric resistance is larger than that of gold. However, the above-mentioned alloy plating containing silver or copper, which has higher conductivity in the metal than gold, has an electrical resistance value in the metal and in the contact portion of the metal as compared with the conventional stainless steel or hard chrome plating. Measurement error can be reduced. In addition, the alloy plating has a Vickers hardness larger than that of gold alone. When importance is attached to the durability of the metal roller, the metal roller may be made of the above alloy plating.

  Compared with a conventional metal roller made of stainless steel, the metal roller of the present invention can increase the electrical conductivity in the metal and in the contact portion of the metal, and accurately measure the electric resistance value of the conductive plated fiber yarn. be able to. Thereby, the productivity of the plated fiber yarn can be improved. In addition, by using the same metal roller as the voltage measuring metal roller for the current supply metal roller, the current value to be supplied can be made an error-free current, and the electric resistance value can be measured more accurately. Of course you can do it.

  The conductive plated fiber yarns are alternately in contact with the upper and lower peripheral surfaces of each adjacent metal roller in a bent state, and in an arc shape with the peripheral surfaces of the pair of metal rollers for voltage measurement. The electrical resistance value is measured in the contact state. As a result, the contact electrical resistance between each metal roller and the conductive plating fiber yarn is reduced, and the conductive plating fiber yarn is less likely to be separated from the metal roller, so that the electrical resistance value can be accurately measured. .

  In addition, since the metal rollers are arranged side by side in one direction, electrical resistance measuring means can be placed in the middle of the path along which the conductive plated fiber yarn is moved, and the production line is linear. The number of conductive fibers that can be simultaneously plated by the plating apparatus can be increased.

  The second invention of the present invention is the electrical resistance measuring means of the first invention, wherein the pair of metal rollers for supplying current is plated with a gold-cobalt alloy having a Vickers hardness of 150 to 200 on the circumferential surface of the roller. A gold-nickel alloy plating layer having a Vickers hardness of 280 to 320, a gold / copper alloy plating layer having a Vickers hardness of 250 to 380, a hard silver plating layer having a Vickers hardness of 100 to 230, and a Vickers hardness Has a metal plating layer selected from 150 to 250 hard copper plating layers.

  Since the electric resistance value of the metal plating layer used in the metal roller according to the second invention is less than 1/20 of that of conventionally used stainless steel, the metal roller is applied to the conductive plating fiber yarn. The fluctuation of the current value when the constant current is supplied by contacting can be suppressed. In addition, since a hard metal equal to or higher than stainless steel having a Vickers hardness of about 180 is selected, even if the electric resistance measuring means is used for a long period of time, the metal roller for supplying current is hardly worn.

  According to a third aspect of the present invention, there is provided the electrical resistance measuring means according to the first or second aspect, wherein at least one of the pair of metal rollers for supplying current is provided with tension adjusting means. The tension adjusting means presses the at least one metal roller toward the conductive plating fiber yarn in contact with the peripheral surface when measuring the voltage of the conductive plating fiber yarn, The tension of the electroconductive plating fiber yarn is adjusted so that each metal roller and the electroconductive plating fiber yarn are not separated from each other.

  The tension adjusting means may be, for example, a metal roller for supplying current that is a floating roller that can operate in the vertical direction by its own weight. Since the metal roller for supplying current presses the conductive plating fiber yarn from above, each metal roller for supplying current and the conductive plating fiber yarn are not separated from each other. Of course, the urging means may be attached to the current supply metal roller and may be pressed by the urging force.

  When contacting the metal roller for supplying current from under the conductive plating fiber yarn, press the metal roller for supplying current against the conductive plating fiber yarn by an urging means such as an air cylinder. Also good. The force for pressing the metal roller for supplying current may be a small force that does not separate the metal roller and the conductive plating fiber yarn, and may be a small air cylinder.

  In addition, since the tension adjusting means is provided only on the current supply metal roller and the position of the voltage measurement metal roller is fixed, even if the current supply metal roller is moved up and down, the conductive plating fiber The measurement length for measuring the voltage of the yarn does not change. Thereby, the mismeasurement by electroconductive plating fiber thread | sag can be suppressed.

  According to a fourth aspect of the present invention, there is provided the electrical resistance measuring means according to the first to third aspects, wherein the pair of metal rollers for voltage measurement includes wear suppression means, and the wear suppression means includes: The voltage measurement is performed by arranging the rotation axes of the pair of metal rollers for voltage measurement in parallel, and arranging each of the rotation axes in a direction not orthogonal to the feeding direction of the conductive plated fiber yarn. The peripheral surface of each metal roller for use is wider than the thickness of the conductive plating fiber yarn and is in contact with the conductive plating fiber yarn, forming the pair of metal rollers for voltage measurement It is characterized in that the wear of the metal plating layer is suppressed.

  The conductive plating fiber yarn is in contact with a predetermined width range of the peripheral surface of the metal roller. Therefore, it is possible to suppress the wear of the metal plating layer compared to the case where the peripheral surface of the metal roller and the conductive plating fiber yarn are contacted with the width of the thickness of the conductive plating fiber yarn as in the conventional case. it can. Therefore, even if the metal plating layer provided on the metal roller for voltage measurement is a gold plating layer / silver plating layer having a small Vickers hardness, it is difficult to be worn out. Further, the rotation axis of the metal roller is merely disposed obliquely and parallel to the conductive plated fiber yarn, and wear of the metal roller can be suppressed with a simple configuration.

  As a result, the contact electrical resistance is small, and the electrical resistance value of the conductive plating fiber yarn can be accurately measured. In addition, even if the metal roller has a metal plating layer that is soft and easily worn, the metal roller replacement period can be reduced. There is an advantageous effect that it can be lengthened.

  The plating apparatus according to the fifth aspect of the present invention is configured to feed a non-metallic fiber as a core wire, perform metal plating around the non-metallic fiber, measure the electric resistance value of the metal-plated conductive plated fiber yarn, and then wind the coil. In the plating apparatus to be sent out to the roller, the electric resistance measuring means according to the first to fourth aspects of the invention is included, speed control means for adjusting the speed at which the core wire is sent out, the first set electric resistance value and the second Storage means for storing the set electrical resistance value, wherein the first set electrical resistance value is an upper limit allowable electrical resistance value, the second set electrical resistance value is an abnormal electrical resistance value, and the speed control is performed. When the electrical resistance value measured by the electrical resistance measurement means exceeds the first set electrical resistance value, the means slows the feed rate of the conductive plating fiber yarn in the electroless plating step. In both cases, when the electrical resistance value measured by the electrical resistance measuring means exceeds a second set electrical resistance value, the feeding of the conductive plated fiber yarn is stopped in the electroless plating step. It is a feature.

  When the film thickness of the plating layer formed around the conductive plating fiber yarn is small, the electric resistance value becomes large. When the electrical resistance value measured by the electrical resistance measuring means exceeds the first set electrical resistance value that is the upper limit allowable electrical resistance value, the speed control means sets the feed rate of the conductive plated fiber yarn. Make me slow. If the feeding speed of the conductive plating fiber yarn is slowed down, the bath time of the conductive plating fiber yarn in the electroless plating process is lengthened, the thickness of the plating layer of the conductive plating fiber yarn is increased, and the upper limit allowable electrical resistance value Can be kept within the range.

  When the electrical resistance value measured by the electrical resistance measuring means exceeds the second set electrical resistance value which is an abnormal electrical resistance value, the feeding of the conductive plating fiber yarn is stopped in the electroless plating step I will let you. When an abnormal resistance value suddenly occurs, the feeding of the conductive plating fiber yarn can be stopped in the electroless plating process, and only the portion of the conductive plating fiber yarn where the abnormality has occurred can be discarded. . Thereby, the overall production efficiency can be improved.

  6th invention of this invention is a plating apparatus of 5th invention, Comprising: A 3rd setting electrical resistance value is memorize | stored in the said memory | storage means, and a 3rd setting electrical resistance value is a minimum allowable electrical resistance. When the electric resistance value measured by the electric resistance measuring means is lower than a third set electric resistance value, the speed control means is the conductive plating fiber in the electroless plating step. It is characterized by increasing the yarn feeding speed.

  If the film thickness of the plating layer provided in the conductive plating fiber yarn has a predetermined thickness, the function as the conductive wire is maintained. Therefore, in the sixth invention, when the electric resistance value measured by the electric resistance measuring means is lower than the third set electric resistance value, in other words, when there is a necessary and sufficient film thickness. The feeding speed of the conductive plated fiber yarn is increased by the speed control means. Thereby, a long electroconductive plating fiber thread | yarn can be produced even in the same time, and the plating apparatus with high production efficiency can be provided.

-According to 1st invention of this invention, the electrical resistance value of electroconductive plating fiber thread | yarn can be measured correctly, and productivity of plating fiber thread | yarn can be improved. In addition, the contact electrical resistance is reduced and the conductive plated fiber yarn is less likely to be separated from the metal roller, so that the electrical resistance value can be accurately measured.
-According to 2nd invention of this invention, the fluctuation | variation of the electric current value at the time of making a metal roller contact a conductive plating fiber yarn and supplying a constant current can be suppressed. Further, the metal roller for supplying current is not easily worn, and the replacement cycle of the metal roller can be lengthened.
-According to 3rd invention of this invention, the mismeasurement by electroconductive plating fiber thread | sag can be suppressed.

-According to the fourth aspect of the present invention, even a metal roller having a metal plating layer that is soft and easily worn out has an advantageous effect that the replacement period of the metal roller can be lengthened.
-According to the 5th, 6th invention of this invention, it can be set as the plating apparatus which can improve the whole production efficiency.

Explanatory drawing explaining an electrical resistance measurement means (Example 1). Explanatory drawing explaining a plating apparatus (Example 1). Explanatory drawing explaining a tension | tensile_strength adjustment means (Example 2). Explanatory drawing explaining a tension | tensile_strength adjustment means (Example 3). Explanatory drawing explaining an abrasion suppression means (Example 4). Explanatory drawing explaining an abrasion suppression means (Example 5). Explanatory drawing explaining the plating apparatus provided with the speed control means (Example 6). Explanatory drawing explaining an example of the change of an electrical resistance value (Example 6).

  In order to improve the productivity of the conductive plating fiber yarn, the electric resistance value of the conductive plating fiber yarn can be accurately measured, and the maintenance labor of the electric resistance measuring means is reduced. Furthermore, according to the plating film thickness of electroconductive plating fiber thread | yarn, it was set as the plating apparatus which adjusts the sending speed of electroconductive plating fiber thread | yarn, and improves productivity.

  In the first embodiment, the metal rollers 10 and 20 are plated with a highly conductive metal, and the metal rollers are arranged side by side in the horizontal direction, and the conductive plating fiber yarns 90 are adjacent metal rollers. A plating apparatus 100 in which the electrical resistance is measured while alternately contacting the upper peripheral surface and the lower peripheral surface and in contact with a predetermined length will be described with reference to FIGS. 1 and 2.

  FIG. 1 is an explanatory diagram for explaining the configuration of the electrical resistance measuring means 1. In FIG. In FIG. 1D, the metal roller and the slip ring are partially cut away in cross-sectional view for easy understanding. FIG. 2 (A) shows an overall schematic diagram of the plating apparatus 100, and FIG. 2 (B) shows a schematic diagram of a production line for one conductive plated fiber yarn.

  The electrical resistance measuring means 1 is provided with a voltage measuring metal roller 10 and a current supplying metal roller 20 in pairs. The pair of voltage measuring metal rollers 10, 10 are sandwiched between a pair of current supply metal rollers 20, 20, and each metal roller is laterally extended along the direction in which the conductive plated fiber yarn 90 extends. They are arranged side by side in the direction (see FIG. 1A).

  The conductive plating fiber yarns 90 are alternately brought into contact with the upper peripheral surface and the lower peripheral surface of adjacent metal rollers (between FIG. 1 (B) and ab), and between the conductive plating fiber yarns 90 and the metal. The roller is in contact with a predetermined length. In the first embodiment, the vertical heights of the respective metal rollers 10 and 20 are set to substantially the same height, but the vertical positions of the respective metal rollers are not limited, and conductive plated fibers. What is necessary is just to set it as the position where a thread | yarn contacts a metal roller.

  The metal roller 10 for voltage measurement has a main body made of stainless steel, and has a metal plating layer 11 having high conductivity on its peripheral surface. The highly conductive metal plating layer 11 is made of gold, silver, copper, or any of these two or more alloys.

  Moreover, the film thickness of the metal plating layer 11 is not limited, and may be appropriately selected according to the type of metal of the metal plating layer. For example, if it is a gold plating layer, the plating film thickness should just be 1 micrometer-10 micrometers from a viewpoint of cost. If it is a silver plating layer, a copper plating layer, or an alloy plating layer, the metal plating layer may be made thick, and the plating film thickness may be 10 μm to 20 μm.

  Here, the slip ring 30 on which the metal roller is rotatably mounted will be briefly described with reference to FIG. The slip ring is a connector that can transmit a power / electrical signal between the rotating shaft portion and the outside by rotating the rotating shaft portion around the shaft portion. A metal roller 10 is attached to the tip of the rotary shaft 31 of the slip ring. Through holes 12 and 32 are provided in the central portion of the metal roller and the rotation shaft portion along the axial direction, and a conductive wire 33 grounded to the metal roller extends toward the base portion of the rotation shaft portion 31.

  A plurality of metal ring portions 36 that are integral with the rotation shaft portion are attached to the base portion of the rotation shaft portion 31, and a conductive brush portion 39 is in contact with the peripheral surface of the metal ring 36. The conductive wire 33 extending from the metal roller is grounded to the conductive brush portion 39 via the metal ring portion 36, and an accurate power / electric signal is transmitted between the metal roller and the conductive brush portion 39.

  The metal roller 10 is detachably attached to the tip of the rotating shaft portion 31 of the slip ring. The metal roller is rotated integrally with the rotating shaft portion 31, the conductive wire 33, and the metal ring portion 36. On the other hand, the frame portion 37 of the slip ring and the conductive wire 38 extending from the frame portion are not rotated. In addition, a conductive wire 33 with insulating coating extends toward the metal ring portion 36 through the through hole 32. In addition, the conductive wire 33 penetrating through the through hole is connected to each of the plurality of metal ring portions 36 that are integral with the rotating shaft portion 31.

  Further, a connecting terminal 34 having a bifurcated tip is provided at the tip of the conductive wire 33, and the connecting terminal and the metal roller 10 are easily attached and detached by a screw 35. When a current is supplied from the conductive plating fiber yarn 90 to the metal roller 10, the current is sequentially transmitted to the metal roller 10, the connection terminal 34, the conductive wire 33, the metal ring portion 36, and the conductive brush portion 39 (FIG. 1 ( D) See figure). In the current supply metal roller 20, this transmission path is reversed.

  Next, the metal roller 20 for supplying current will be described. The configuration of the metal roller 20 for supplying current is the same as that of the metal roller 10 for voltage measurement except that the material of the metal plating layer 21 is different. Therefore, the description other than the metal plating layer is omitted. . The current supply metal roller 20 is also made of stainless steel, and has a metal plating layer 21 having high conductivity and high Vickers hardness on its peripheral surface.

  Specifically, a gold-cobalt alloy plating layer having a Vickers hardness of 150 to 200, a gold-nickel alloy plating layer having a Vickers hardness of 280 to 320, a gold-copper alloy plating layer having a Vickers hardness of 250 to 380, and a Vickers Any metal plating layer selected from a hard silver plating layer having a hardness of 100 to 230 and a hard copper plating layer having a Vickers hardness of 150 to 250 is formed. The film thickness of the metal plating layer is not limited.

  Here, with reference to FIG. 1C, a method of measuring the electrical resistance value by the four-terminal measurement method will be briefly described. The electrical resistance measuring means 1 supplies a current from the power source 80 to the conductive plated fiber yarn 90 via the current-supplying metal rollers 20, 20, and conducts electricity between the two voltage-measurement metal rollers 10, 10. The voltmeter 81 measures the voltage value of the plated fiber yarn (part e in FIG. 1C). The measured voltage value is converted into a digital signal by the analog / digital converter 82 and transmitted to the central processing unit 83. The central processing unit 83 divides the measured voltage value by the input current, thereby calculating the electrical resistance value of the conductive plated fiber yarn and storing the result.

  Next, the plating apparatus 100 (refer FIG. 1) provided with the electrical resistance measurement means 1 is demonstrated with reference to each figure of FIG. The plating apparatus 100 is arranged in the order of the core wire sending section 110, the plating bath 120, the water washing apparatus 130, the drying apparatus 140, the electric resistance measuring means 1, and the conductive plating fiber yarn winding section 150, starting from the left side in the figure. Thus, a production line for producing a plurality of conductive plated fiber yarns is formed (see the arrow in FIG. 2A).

  The core wire sending section 110 of the plating apparatus is provided with a plurality of yarn feeding rollers 111 so that a plurality of core wires 91 can be plated simultaneously. A plurality of yarn feeding rollers 111 are mounted with a core wire 91 forming a conductive plating fiber yarn wound around a bobbin. The core wire sending section 110 is provided with the same number of pinch rollers 112 as the yarn feeding rollers 111 and a dancer 113 for adjusting the tension of the yarn, and the core wire 91 is sent to the plating bath 120 so as not to be too tight. . The material of the core wire may be polymer fibers (including natural fibers such as silk and resin fibers such as aramid fibers), carbon fibers, and ceramic fibers (including glass fibers). The core wire may be a single fiber or a fiber bundle in which single fibers are bundled. The core wire is subjected to a pretreatment process such as a supercritical plating pretreatment prior to the electroless plating bath.

  In the plating bath 120, the core wire 91 is subjected to an electroless plating bath, and a plating layer is formed around the core wire (see FIG. 2B). The bath conditions of the electroless plating bath are not limited. For example, in the case of a plating bath using electroless copper, the main components of the copper plating solution are 10 g of copper sulfate and 2 to 3 g of a formaldehyde solution (35% by weight aqueous solution) as a reducing agent per liter of the copper plating aqueous solution. . The bath temperature is 40 to 50 ° C., the pH is 8 to 13, and the bath time is 5 to 15 minutes. Under the bath conditions of this electroless plating bath, an electroless copper plating layer of 0.2 μm to 0.5 μm is formed around the core wire 91.

  In addition, the plating bath in the plating bath 120 is not limited to the electroless plating bath, and it goes without saying that an electroplating bath may be included in succession to the electroless plating bath. For example, in the case of a copper sulfate plating bath, the copper plating solution is 180 to 250 g of copper sulfate, 45 to 60 g of sulfuric acid (98% by weight of sulfuric acid component), and the bath temperature is 20 to 35 ° C. per liter of the aqueous solution of copper sulfate plating. Is done. The current density is 0.5 to 5 A / dm2, and the plating bath time is 5 to 30 minutes. A copper sulfate plating layer having a thickness of 1.0 to 5 μm is formed under the bath conditions of this electroplating bath.

  After the plating bath process in the plating bath, the conductive plating fiber yarn 90 is sent in the order of the water washing device 130 and the drying device 140, washed with water and dried, and then the electric resistance value is measured by the electric resistance measuring means 1. Then, the conductive plated fiber yarn 90 whose electric resistance value has been measured is taken up by a take-up roller 151 that rotates in synchronization with the yarn feed roller 111.

  In the second embodiment, an embodiment of the electrical resistance measuring means 2 provided with the tension adjusting means 40 will be described with reference to FIG. FIG. 3A shows a side view of the metal roller 20 for supplying current. FIG. 3B shows a state before the current supply metal roller 20 is pressed against the conductive plated fiber yarn 90 by the tension adjusting means 40, and FIG. 3C shows the state after the pressing. Show. In FIG. 3B, a virtual line 43 connecting the axes of the current supply metal rollers is indicated by a one-dot chain line.

  Of the pair of current supply metal rollers 20, the metal roller 23 in which the conductive plating fiber yarn is in contact with the lower peripheral surface is a floating roller that can be moved up and down, and is used as the tension adjusting means 40. Yes. The tension adjusting means is the weight of the metal roller 23 and the leaf spring 41. The leaf spring 41 is attached to the lower surface side of the top plate portion 42 and presses the current supply metal roller 23 in a direction intersecting the virtual line 43 (upward and downward in the drawing) (FIG. 3B). (See the white arrow in the figure). The tension adjusting means 40 is not limited to a leaf spring, and may be any known urging means. Alternatively, the metal roller may be moved by an air cylinder, a servo motor, or the like, and pressed against the conductive plated fiber yarn 90.

  The conductive plating fiber yarn 90 is stretched so as to alternately contact the upper peripheral surface and the lower peripheral surface of each of the metal rollers 10 and 20. Therefore, when one metal roller 23 is pressed against the conductive plating fiber yarn 90, tension is applied to the conductive plating fiber yarn 90 in contact with the metal rollers 10 and 20, and the conductive plating fiber yarn and (See FIG. 3 (C) arrow).

  The pressing of the metal roller against the conductive plating fiber yarn by the tension adjusting means 40 may be performed with a small force so that the conductive plating fiber yarn 90 and each of the metal rollers 10 and 20 are not separated from each other. For example, the height at which the conductive plated fiber yarn is pushed down by the tension adjusting means may be about 5 mm to about 10 mm (see FIG. 3C, width f). Therefore, even a small pressing force by the weight of the metal roller and a small leaf spring functions sufficiently.

  As a result, the conductive plated fiber yarns and the respective metal rollers are not separated from each other, and erroneous measurement of the electrical resistance value can be prevented. In addition, since the tension adjusting means has a simple configuration using a floating roller and a leaf spring, the electrical resistance measuring means 2 is not increased in size, and many electrical resistance measuring means are provided in a limited space on the plating apparatus line. It becomes easy to arrange.

  In the third embodiment, another embodiment of the electric resistance measuring means 3 using the air cylinder 50 as a tension adjusting means will be described with reference to FIG. FIG. 4A shows a side view of the metal roller 10 for voltage measurement. 4B shows a state before the voltage measuring metal roller 10 is pressed against the conductive plated fiber yarn 90 by the air cylinder 50, and FIG. 4C shows the state after being pressed. Show. In FIG. 4B, the phantom line 52 connecting the axis of the voltage measuring metal roller is indicated by a one-dot chain line.

  In the third embodiment, both of the pair of voltage measuring metal rollers 10 and 10 are floating rollers that are integrally moved up and down. The tension adjusting means is an air cylinder 50 provided below the metal roller 10 for voltage measurement. The air cylinder 50 presses the voltage measuring metal roller 10 in a direction intersecting with a virtual line 52 that connects the axes of the current supplying metal rollers (FIG. 4B, white arrows). The pushed-up height (see FIG. 4C, width g) may be about 5 mm to 10 mm as in the second embodiment.

  In addition, a flat plate 51 that connects a pair of metal rollers 10 and 10 for voltage measurement is provided at the tip of the forward / backward axis of the air cylinder 50. When the flat plate 51 pushes up the lower surfaces of the two slip rings 30, the relative positional relationship between the pair of voltage measuring metal rollers 10 and 10 is not changed and is pressed against the conductive plated fiber yarn 90 (FIG. 4). (B) White arrow in the figure). And tension | tensile_strength acts on the electroconductive plating fiber thread | yarn 90, and sagging is prevented (FIG.4 (C) figure arrow). In addition, since it is sufficient to generate a slight force with an air cylinder, a small air cylinder is sufficient, and the arrangement space for the electrical resistance measuring means 3 is not enlarged.

  The conductive plated fiber yarn 90 includes a pair of current supply metal rollers 20 and 20 on both sides, and a pair of voltage measurement metal rollers 10 and 10 sandwiched therebetween. (Refer to FIG. 4B). Therefore, when the voltage measuring metal roller 10 is pressed against the conductive plated fiber yarn 90, the measured length of the conductive plated fiber yarn (see FIG. 4B, FIG. 4C and FIG. Hi). Will not change.

  In the fourth embodiment, an example of the electrical resistance measurement unit 4 provided with the wear suppression unit 60 will be described with reference to FIG. 5A shows a plan view of the electrical resistance measuring means 4 and the wear suppression means 60, FIG. 5B shows a side view of the metal roller 10, and FIG. 5C shows the metal roller. 10 is an explanatory diagram for explaining the contact length between 10 and the conductive plated fiber yarn 90. FIG. FIGS. 5D to 5F show, as a comparative example, a case in which the upper peripheral surface of the metal roller is brought into contact with the width of the conductive plated fiber yarn.

  The wear suppression means 60 is configured such that the rotation shafts 13 and 13 of the pair of voltage measuring metal rollers are arranged obliquely and in parallel with the conductive plating fiber yarn 90. Then, the conductive plated fiber yarn 90 comes into contact with a predetermined width range (between FIG. 5B and FIG. 5C) jk on the peripheral surface of the metal roller 10. Therefore, compared with the case where the conductive plating fiber yarn and the metal roller are brought into contact with each other with the width of the conductive plating fiber yarn without the wear suppression means (FIG. 5D to FIG. 5F). Thus, the contact area between the conductive plating fiber yarn 90 and the metal plating layer 11 is increased, and wear of the metal plating layer 11 is suppressed.

  In the fifth embodiment, an example of the electrical resistance measuring means 5 provided with the advancing / retreating means 70 constituting the wear suppression means will be described with reference to FIG. FIG. 6 (A) shows a side view of the electrical resistance measuring means 5 and the advance / retreat means 70, and FIG. 6 (B) shows a plan view thereof. FIG. 6C and FIG. 6D show a state where the position where the conductive plated fiber yarn 90 contacts the metal roller 10 is changed by the advance / retreat means 70. Note that the rotation direction and the movement direction described below all indicate directions in the figure.

  The advancing / retreating means 70 is a flat body 74 that is spanned between a servo motor 71, a gear gear 72, a spur gear 73, and a voltage measuring metal roller. The gear gear 72 is mounted on the drive shaft of the servo motor 71 and is engaged with the spur gear 74. The spur gear 73 is disposed on the upper surface of the flat plate 74 and transmits the driving force of the servo motor 70 to the metal roller 10.

  When the servo motor 70 is rotated clockwise, the metal roller 10 is moved forward, and the conductive plated fiber yarn 90 is moved from the center of the roller peripheral surface of the metal roller 10 to the right side (FIG. 6A). (See FIG. 6C). When the servo motor 70 is rotated counterclockwise, the conductive plated fiber yarn 90 is moved from the center of the roller peripheral surface of the metal roller 10 to the left side (see FIG. 6D). The contact point between the conductive plated fiber yarn 90 and the metal roller 10 is dispersed in a width (see FIG. 6C, FIG. 6D, and width m) in which the metal roller 10 is advanced and retracted. Therefore, wear of the metal plating layer is suppressed. In addition, the width | variety by which the metal roller 10 is advanced / retracted should just be selected according to the thickness of electroconductive plating fiber yarn. Since the width of the conductive plating yarn in which 267 filaments having a wire diameter of 12 μm per single fiber are gathered is about 1 mm, it may be advanced and retracted with a width of about 5 mm to 10 mm.

  In Example 6, a plating apparatus 200 provided with speed control means 210 will be described with reference to FIGS. 7 and 8. FIG. 7A shows an explanatory view for explaining the plating apparatus 200, and FIG. 7B shows an explanatory view for explaining the configuration of the speed control means 210. FIG. 8 is a graph showing an example of the measured electric resistance value. 8A shows the case where the measured electrical resistance value 300 exceeds the first set electrical resistance value 230, and FIG. 8B shows the measured electrical resistance value 310 being the second set electrical resistance value. The case where 240 is exceeded is shown. FIG. 8C shows a case where the measured electrical resistance value 320 is lower than the third set electrical resistance value 250.

  The speed control unit 210 includes a storage unit 211 and a control unit 217. The storage unit 211 includes first to third set electrical resistance value storage units 212, 213, and 214, a set speed storage unit 215 that stores the speed at which the core wire 91 is sent out, and a measurement that stores the measured electrical resistance value. And an electrical resistance value storage unit 216. As the first to third set electrical resistance values and set speed values, numerical values input in advance from the input unit 220 are stored. The measured electrical resistance value storage unit 216 stores the electrical resistance value calculated by the central processing unit 83.

  The control unit 217 includes a delivery speed control unit 218 and an electrical resistance value evaluation unit 219. In the initial state, the delivery speed control unit 218 uses the set speed value stored in the set speed storage unit 215 to send out the core wire 91 at a predetermined delivery speed. The electrical resistance value evaluation unit 219 compares the measured electrical resistance value with preset first to third set electrical resistance values, and accelerates, stops, or decelerates the delivery speed according to the result. So that the sending speed control unit 218 transmits the change.

  Next, specific changes in the measured electrical resistance value will be described with reference to FIGS. 8A to 8C. When it is evaluated that the measured electrical resistance value 300 exceeds the first set electrical resistance value 230, an electrical command is transmitted from the electrical resistance value evaluation unit to the feed rate control unit so as to slow the feed rate of the core wire. If it does so, the plating bath time in a plating apparatus will become comparatively long, and the plating film thickness of the electroconductive plating fiber yarn 90 will become thick. As a result, the electrical resistance value 300 of the conductive plated fiber yarn is reduced, and the second set electrical resistance value 240 is prevented from being exceeded (see FIG. 8A).

  If the measured electrical resistance value 310 suddenly exceeds the second set electrical resistance value 240, an electrical command is transmitted from the electrical resistance value evaluation unit to the delivery speed control unit so as to stop the delivery, and the conduction Of the electroplated fiber yarn is stopped. And it excludes from shipping object as electroconductive plating fiber yarn containing an abnormal part (refer to Drawing 8 (B) figure).

  On the other hand, when it is evaluated that the measured electrical resistance value 320 is lower than the third set electrical resistance value 250, an electrical command is transmitted from the electrical resistance value evaluation unit to the delivery speed control unit so as to speed up the delivery. . By accelerating the feeding speed, the plating bath time in the plating apparatus becomes relatively short, and even in the same time, a long conductive plated fiber yarn can be manufactured, and the production efficiency is improved (FIG. 8C). reference).

(Other)
-In Example 1, although the example which equips a plating apparatus with an electrical resistance measurement means and measured the electrical resistance value of electroconductive plating fiber yarn continuously with a plating process was demonstrated, an electrical resistance value was independent of the plating process. May be measured. For example, the conductive plating fiber yarn wound around the bobbin after the plating step may be transferred from the plating apparatus to another winding apparatus, and the electric resistance value may be measured while being wound around another bobbin.
-The electrical resistance measuring means by this invention is not limited to the case where it integrates in a plating apparatus etc., It is good also as an independent portable electrical resistance measuring means. Of course, it is also possible to use electrical resistance measuring means provided with only a pair of voltage measuring metal rollers.
In order to facilitate understanding, the presently disclosed invention has been described with the production line shown in a straight line, but it is needless to say that the invention is not limited thereto.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

1, 2, 3, 4, 5 ... electric resistance measuring means, 100, 200 ... plating apparatus,
DESCRIPTION OF SYMBOLS 10 ... Metal roller, 11 ... Metal plating layer, 12 ... Through-hole, 13 ... Rotating shaft,
20, 23 ... Metal roller, 22 ... Metal plating layer,
30 ... slip ring, 31 ... rotating shaft, 32 ... through hole, 33, 38 ... conductive wire,
34 ... Connection terminal, 35 ... Screw, 36 ... Metal ring part, 37 ... Frame body part, 39 ... Conductive brush part,
40 ... tension adjusting means, 41 ... leaf spring, 42 ... top plate, 43 ... virtual line,
50 ... Air cylinder, 51 ... Flat plate, 52 ... Virtual line,
60 ... wear-inhibiting means, 70 ... advance / retreat means, 71 ... servo motor, 72 ... gear gear,
73 ... Spur gear, 74 ... Flat plate, 80 ... Power source, 81 ... Voltmeter,
82 ... analog / digital converter, 83 ... central processing unit,
90 ... conductive plated fiber yarn, 91 ... core wire,
110: Core wire feeding unit, 111: Yarn feeding roller, 112 ... Pinch roller,
113 ... Dancer, 120 ... Plating bath, 130 ... Flushing device,
140 ... drying device, 150 ... winding section, 151 ... winding roller,
210 ... speed control means, 211 ... storage unit, 212 ... first set electrical resistance value storage unit,
213: second set electrical resistance value storage unit, 214: third set electrical resistance value storage unit,
215: Setting speed storage unit, 216: Measurement electric resistance value storage unit, 217 ... Control unit,
218 ... Sending speed control unit, 219 ... Electric resistance value evaluation unit,
220 ... input unit, 230 ... first set electrical resistance value, 240 ... second set electrical resistance value,
250 ... second set electric resistance value, 300, 310, 320 ... measured electric resistance value

Claims (11)

A metal roller included in an electrical resistance measuring means for measuring the electrical resistance value of a conductive plated fiber yarn having a metal plating around the non-metallic fiber as a core wire,
The electrical resistance measuring means includes a voltage measuring metal roller for measuring a voltage value applied to the conductive plated fiber yarn so as to form a pair.
The pair of metal rollers for voltage measurement has a metal plating layer made of any metal selected from gold, silver, copper, and an alloy of two or more of these on the roller peripheral surface.
A metal roller characterized by that. A metal roller included in an electrical resistance measuring means for measuring the electrical resistance value of a conductive plated fiber yarn having a metal plating around the non-metallic fiber as a core wire,
The electrical resistance measurement means includes a current supply metal roller for supplying a constant current to the conductive plating fiber yarn, and a voltage measurement metal roller for measuring a voltage value applied to the conductive plating fiber yarn; Are prepared to make a pair,
The pair of metal rollers for supplying current has a gold-cobalt alloy plating layer having a Vickers hardness of 150 to 200, a gold-nickel alloy plating layer having a Vickers hardness of 280 to 320, and a Vickers hardness of 250 on the roller peripheral surface. A metal plating layer selected from a gold-copper alloy plating layer of 380 or less, a hard silver plating layer having a Vickers hardness of 100 or more and 230 or less, and a hard copper plating layer having a Vickers hardness of 150 or more and 250 or less. Have
A metal roller characterized by that. An electrical resistance measuring means for measuring the electrical resistance value of a conductive plated fiber thread having a metal plating around the non-metallic fiber as a core wire,
The electrical resistance measuring means includes a voltage measuring metal roller for measuring a voltage value applied to the conductive plated fiber yarn so as to form a pair.
The metal roller according to claim 1 is used as at least the metal roller for voltage measurement.
An electrical resistance measuring means. An electrical resistance measuring means for measuring the electrical resistance value of a conductive plated fiber thread having a metal plating around the non-metallic fiber as a core wire,
The electrical resistance measurement means includes a current supply metal roller for supplying a constant current to the conductive plating fiber yarn, and a voltage measurement metal roller for measuring a voltage value applied to the conductive plating fiber yarn; Are prepared to make a pair,
The metal roller according to claim 2 is used for at least the metal roller for supplying current.
An electrical resistance measuring means. The pair of metal rollers for voltage measurement is sandwiched between a pair of metal rollers for supplying current, and each metal roller is arranged side by side in one direction,
The conductive plating fiber yarn is alternately in contact with the upper peripheral surface and the lower peripheral surface of adjacent metal rollers, and in the state of being in contact with a predetermined length, the electric resistance value is measured.
The electrical resistance measuring means according to claim 4. Electric resistance measuring means,
Tension adjusting means is included in at least one of the metal rollers for supplying current,
When the voltage of the conductive plating fiber yarn is measured, the tension adjusting means conducts at least one of the metal rollers in a direction intersecting with an imaginary line connecting the axis of the metal roller for voltage measurement. The metal plating fiber yarn is pressed against the conductive plating fiber yarn so that the metal plating fiber yarn and the conductive plating fiber yarn are not separated from each other.
The electrical resistance measuring means according to claim 4 or 5, characterized in that. Electric resistance measuring means,
The pair of metal rollers for voltage measurement is sandwiched between a pair of metal rollers for supplying current, and each metal roller is arranged side by side in one direction,
The conductive plating fiber yarn is in contact with one peripheral surface of the pair of voltage measuring metal rollers, and is in contact with the other peripheral surface of the pair of current supplying metal rollers, both of which are in contact with each other with a predetermined length. In this state, the pair of metal rollers for voltage measurement includes tension adjusting means,
When the voltage of the conductive plating fiber yarn is measured, the tension adjusting means has a pair of the voltage measuring metals in a direction crossing an imaginary line connecting the axes of the pair of current supplying metal rollers. The roller is pressed against the conductive plating fiber yarn so that each metal roller and the conductive plating fiber yarn are not separated from each other.
The electrical resistance measuring means according to claim 4. Electric resistance measuring means,
The pair of metal rollers for voltage measurement includes wear suppression means,
The wear suppression means includes a pair of the voltage measuring metal rollers, each of which has an axis of rotation oblique to and parallel to the conductive plating fiber yarn, and the conductive plating fiber yarn of the metal roller. It is designed to come into contact with a range of a predetermined width of the peripheral surface,
Suppressing wear of the metal plating layer forming each of the pair of metal rollers for voltage measurement;
The electrical resistance measuring means according to any one of claims 3 to 7, wherein Electric resistance measuring means,
The pair of metal rollers for voltage measurement includes wear suppression means,
The wear suppression means includes an advancing / retreating means for advancing / retreating the pair of voltage measuring metal rollers in the axial direction,
The advance and retreat means suppresses wear of the metal plating layer by changing the position where the conductive plating fiber yarn and the voltage measuring metal roller are in contact with each other,
The electrical resistance measuring means according to any one of claims 3 to 7, wherein In plating equipment that includes an electroless plating process in which non-metallic fibers are sent out as a core wire and metal is plated around the core wire.
Including the electrical resistance measuring means according to any one of claims 3 to 9,
Speed control means for adjusting the speed at which the plated fiber yarn is fed out, and storage means in which the first set electrical resistance value and the second set electrical resistance value are stored,
The first set electrical resistance value is an upper limit allowable electrical resistance value, the second set electrical resistance value is an abnormal electrical resistance value,
When the electric resistance value measured by the electric resistance measuring means exceeds a first set electric resistance value, the speed control means sends out the conductive plated fiber yarn in the electroless plating step. When the electrical resistance value measured by the electrical resistance measuring means exceeds a second set electrical resistance value, the feeding of the conductive plated fiber yarn is stopped in the electroless plating process. Let
A plating apparatus characterized by that. In plating equipment that includes an electroless plating process in which non-metallic fibers are sent out as a core wire and metal is plated around the core wire.
Including the electrical resistance measuring means according to any one of claims 3 to 9,
Speed control means for adjusting the speed at which the plated fiber yarn is fed out, and storage means in which a third set electrical resistance value is stored,
The third set electrical resistance value is the lower limit allowable electrical resistance value,
The speed control means, when the electrical resistance value measured by the electrical resistance measurement means falls below a third set electrical resistance value, in the electroless plating step, the feeding speed of the conductive plated fiber yarn Make it faster,
A plating apparatus characterized by that.

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