JP5805290B1 - Linear material coating method and linear material coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linear material coating method and a linear material coating apparatus capable of dealing with various resins without wasting the resin. The present invention is a linear material coating method in which a resin R is attached to the outer peripheral surface of a linear material L and the linear material L is coated with the resin R over its entire length, and a through hole 21 filled with the resin R is provided. The resin R is attached to the outer peripheral surface of the linear material L by introducing the linear material L and passing through the through hole 21, and an amount of resin corresponding to the amount of the resin R to be adhered is contained in the through hole 21. It is characterized by supplying to. Moreover, this invention is the linear material coating | coated apparatus 1 which makes the resin R adhere to the outer peripheral surface of the linear material L, and coat | covers the linear material L with resin R over the full length, and is stored in the state which resin R does not harden | cure. According to the tank 10, the cylindrical container 20 having the through-hole 21 filled with the resin R and allowing the linear material L to pass through, and the amount of the resin R attached to the outer peripheral surface of the linear material L in the through-hole 21 And a pump mechanism 30 for supplying an amount of resin out of the tank 10 and supplying the resin into the through hole 21. [Selection] Figure 2

Description

  The present invention relates to a linear material coating method and a linear material coating apparatus used for insulating an electric wire or reinforcing a carbon fiber.

  Conventionally, as a method of forming an electrical insulating layer on the outer periphery of the electric wire, the electric wire is immersed in a liquid tank containing a resin for forming the insulating layer, and the resin is adhered to the outer periphery of the electric wire, and then a baking furnace A method of baking resin on the outer periphery of the electric wire by allowing the electric wire to pass therethrough (see, for example, Patent Document 1).

JP-A-8-306251

  However, in the conventional method of attaching the resin to the outer periphery of the electric wire, it is necessary to store a large amount of the resin for forming the insulating layer in the liquid tank. The resin stored in the liquid tank needs to be replaced in a timely manner because it cures over time, but many of the resins stored in the liquid tank can be replaced without being used, and the resin is wasted. The problem of becoming.

  In addition, when a resin can be used, that is, when a resin having a short pot life is used, it is necessary to frequently replace the resin, and the resin cannot be efficiently attached to the outer periphery of the electric wire. There was a problem.

  The present invention has been made in order to solve the above-described problems, and is a wire that can be applied to various resins without wasting the resin in covering the outer periphery of a linear material such as an electric wire with the resin. A linear material coating method and a linear material coating apparatus are provided.

  The linear material coating method according to the present invention is a method in which a resin is attached to the outer peripheral surface of a linear material to coat the linear material over the entire length with the resin, and the linear material is filled into the through hole filled with the resin. The resin is attached to the outer peripheral surface of the linear material by passing through the through hole, and an amount of resin corresponding to the amount of the resin to be attached is supplied into the through hole.

  Moreover, the linear material coating | coated apparatus which concerns on this invention is an apparatus which makes resin adhere to the outer peripheral surface of a linear material, and coat | covers a linear material with resin over the full length, Comprising: The tank stored in the state which resin does not harden | cure And a cylindrical container filled with resin and having a through-hole through which the linear material passes, and an amount of resin corresponding to the amount of resin adhered to the outer peripheral surface of the linear material in the through-hole is caused to flow out of the tank. And a pump mechanism for feeding into the through hole.

  According to the linear material coating method and the linear material coating apparatus of the present invention, when the linear material passes through the through hole, the amount of resin attached to the outer peripheral surface of the linear material and derived from the through hole is reduced. Accordingly, since the resin is supplied into the through-hole, the volume of the through-hole can be reduced to such an extent that the amount of resin can be filled according to the amount of the resin attached to the outer peripheral surface of the linear material. . As a result, the resin in the through hole can be used up before being cured, and the resin is not wasted. Moreover, even if the pot life is short, it can be used up before the resin is cured, so various resins can be used.

  In the linear material coating apparatus according to a preferred embodiment, the through-hole can fill a resin having an amount larger than the diameter of the linear material and at least an amount of the resin attached to the outer peripheral surface of the linear material. The inlet of the linear material is formed at one end of the through hole, and the diameter according to the amount of resin attached to the outer peripheral surface of the linear material is formed at the other end of the through hole. In the inner surface of the through hole, a communication port communicating with the resin supply port to which the pump mechanism is connected is opened.

  In the linear material coating apparatus according to a preferred embodiment, the pump mechanism stores a syringe that stores the resin to be supplied into the through hole, and sends the resin stored in the syringe into the through hole by applying an air pressure to the syringe. A pressurizing mechanism and an adjusting mechanism that adjusts the amount of resin outflow from the tank so that the amount of resin stored in the syringe is always constant.

  According to the linear material coating method and the linear material coating apparatus of the present invention, it is possible to deal with various resins without wasting the resin.

It is the schematic which shows one Embodiment of the linear material coating | coated apparatus which concerns on this invention. It is a perspective view which expands and shows the syringe and container of the linear material coating | coated apparatus of FIG. It is a front view which takes out and shows one of the syringe and container of the linear material coating | coated apparatus of FIG. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which shows the modification of the attachment position of the syringe of the linear coating | coated apparatus which concerns on this invention. It is sectional drawing which shows the other modification of the attachment position of the syringe of the linear coating | coated apparatus which concerns on this invention. It is a side view which shows other embodiment of the syringe and container of the linear coating | coated apparatus which concern on this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a linear material coating method and a linear material coating apparatus 1 according to the present invention will be described with reference to the accompanying drawings. FIG. 1 shows one embodiment of a linear material coating apparatus 1 according to the present invention, and FIGS. 2 to 4 show a syringe 32 and a container 20 (described later) of the linear material coating apparatus 1 shown in FIG. Show. In FIG. 2, a liquid level sensor 51 provided in the vicinity of two central syringes 32, which will be described later, and a laser displacement sensor 52 provided in the vicinity of the container 20 are omitted for easy understanding of the drawing. Show.

  As shown in FIG. 1, the linear material coating apparatus 1 includes a tank 10 that stores a resin R, a cylindrical container 20 that has a through-hole 21 (see FIG. 4) that is filled with the resin R, and a resin from the tank 10. And a pump mechanism 30 for supplying R into the through hole 21.

  In the present embodiment, as the resin R, a two-component resin that is used by mixing a main agent and a curing agent is used. Since the reaction proceeds and cures when the two-component resin is mixed with the main agent and the curing agent, the tank 10 includes a main agent tank 11 that stores the main agent and a curing agent tank 12 that stores the curing agent. Thereby, resin R is stored in the state which does not harden. As the main agent tank 11 and the curing agent tank 12, any known arbitrary tank can be used. The resin R is not limited to a two-component resin, and a one-component resin can also be used. At this time, only one tank 10 may be used.

  As shown in FIGS. 2 to 4, the container 20 has a substantially cylindrical shape, and the outer diameter of the end portion on one side is large. A supply port 22 to which the pump mechanism 30 is connected is formed in the large diameter portion 201. A hollow portion of the container 20 serves as a through hole 21 for allowing the linear material L to pass therethrough.

  The through-hole 21 extends in the axial direction of the container 20 and satisfies the resin R corresponding to the diameter larger than the diameter of the linear material L and at least the amount of the resin R attached to the outer peripheral surface of the linear material L. With a possible volume. A communication port 213 communicating with the supply port 22 is opened on the inner surface of the through hole 21, and the resin R is supplied from the pump mechanism 30 into the through hole 21 through the communication port 213.

  In addition, an introduction port 211 for introducing the linear material L into the through hole 21 is formed at one end of the through hole 21, that is, the end on the large diameter portion 201 side, and a linear shape is formed at the other end of the through hole 21. A lead-out port 212 through which the material L is led out from the through hole 21 is formed. The outlet 212 is opened with a diameter corresponding to the amount of the resin R attached to the outer peripheral surface of the linear material L. That is, by passing through the outlet port 212, excess resin R adhering to the outer peripheral surface of the linear material L is removed, and the linear material L is coated with the resin R having a desired thickness. . In this embodiment, the recessed part 203 is formed in the end surface at the side of the outlet port 212 of the container 20, and the outlet port 212 is formed by fitting the short cylindrical mounting member 23 in the recessed part 203 so that attachment or detachment is possible. Specifically, the mounting member 23 is formed with an inner hole 231 that penetrates in the axial direction of the container 20 when fitted into the through hole 21, and the inner hole 231 serves as a lead-out port 212. The inner hole 231 is formed with a diameter such that the resin R covered with the linear material L has a desired thickness. By forming the outlet port 212 in this way, the diameter of the outlet port 212 can be changed by preparing a plurality of mounting members 23 having inner holes 231 of different diameters and replacing the mounting members 23. Note that the outlet 212 is not limited to the above-described mode, and may be formed by setting the diameter of the through hole 21 on the outlet 212 side to a desired diameter when the through hole 21 is formed in the container 20.

  The container 20 is made of, for example, true casting or cemented carbide, and the mounting member 23 is made of, for example, sapphire or ruby. As an example of the container 20, a known coating die having a length that can hold the resin R can be used.

  One or more containers 20 configured as described above are provided in the linear material coating apparatus 1. That is, in the case where a plurality of linear materials L are coated simultaneously, or in the case where the coating thickness of the resin R is increased stepwise with respect to one linear material L, the linear materials The coating apparatus 1 can include a plurality of containers 20. In particular, when the coating thickness of the resin R is changed stepwise, the linear material coating apparatus 1 includes a plurality of containers 20 with different diameters of the outlet port 212. In the present embodiment, as shown in FIG. 2, the linear material coating apparatus 1 includes four containers 20. Thus, when providing the some container 20, the container 20 is hold | maintained by the holder 40 in the horizontal attitude | position. Specifically, the holder 40 has a plurality of holes 41 into which the small diameter portion 202 of the container 20 can be inserted, and the container 20 has the small diameter portion 202 in the hole 41. The large-diameter portion 201 is attached to the side surface of the holder 40.

  As shown in FIG. 1, the pump mechanism 30 includes a syringe 32 communicating with the supply port 22 of the container 20, an adjustment mechanism 33 provided between the tank 10, that is, the main agent tank 11, the curing agent tank 12, and the syringe 32, and A pressurizing mechanism 34 that applies air pressure to the syringe 32 is provided.

  The syringe 32 includes a main body portion 321 that stores the resin R supplied into the through-hole 21 and a narrow tube 322 that is provided at the lower end of the main body portion 321 so as to communicate with the main body portion 321. The distal end of the thin tube 322 is formed to be insertable into the supply port 22 of the container 20, and the syringe 32 is attached to the container 20 by inserting the distal end of the thin tube 322 into the supply port 22. As a result, the resin R in the main body 321 is introduced into the through hole 21 through the narrow tube 322. Thus, since the syringe 32 is directly attached to the container 20, when the linear material coating | coated apparatus 1 is provided with the some container 20, the syringe 32 is also provided with the number of the containers 20. FIG.

  A sealing member 35 that seals the main body 321 is attached to the upper end of the main body 321. A resin tube 351 that supplies the resin R into the main body 321 and an air tube 352 that supplies air into the main body 321 are attached to the sealing member 35. The resin tube 351 communicates with the adjustment mechanism 33, and the air tube 352 is connected to the pressurization mechanism 34.

  The adjustment mechanism 33 includes a main agent metering pump 331 that communicates with the main agent tank 11, a curing agent metering pump 332 that communicates with the curing agent tank 12, a mixing unit 333 that communicates with the main agent metering pump 331 and the curing agent metering pump 332, The valve 334 is provided between the portion 333 and the syringe 32. The main agent metering pump 331 discharges a predetermined amount of the main agent from the main agent tank 11, and the hardener metering pump 332 discharges a predetermined amount of the hardener from the hardener tank 12. As the main agent metering pump 331 and the hardener metering pump 332, any known metering pump can be used.

  The mixing unit 333 mixes the main agent supplied from the main agent tank 11 via the main agent metering pump 331 and the hardener supplied from the hardener tank 12 via the hardener metering pump 332. For the mixing unit 333, a known static mixer, dynamic mixer, or the like can be used. In the mixing portion 333, the main agent and the curing agent are mixed to form the resin R.

  The valve 334 is attached to a resin tube 351 that allows the sealing member 35 and the mixing unit 333 to communicate with each other, and switches whether to supply the resin R mixed by the mixing unit 333 into the main body 321 of the syringe 32. . That is, when the resin R in the main body 321 decreases, the valve 334 opens and the resin R is supplied into the main body 321. When the resin R in the main body 321 increases, the valve 334 closes and enters the main body 321. The supply of the resin R is stopped. In particular, when the linear material coating apparatus 1 includes a plurality of syringes 32, the resin tubes 351 are branched from the mixing unit 333 and communicated with the syringes 32. A valve 334 is provided. Then, by opening / closing the valve 334, the syringe 32 is switched to which body R 321 is supplied with the resin R. For example, a flow valve can be used as the valve 334.

  In the adjustment mechanism 33, the amount of the resin R stored in the main body 321 (in this embodiment) is changed by switching the valve 334 and the discharge amount of the main agent and the hardener discharged from the main agent metering pump 331 and the hardener metering pump 332. The outflow amount of the resin R from the tank 10 is adjusted so that the height of the liquid level is always constant.

  The pressurizing mechanism 34 feeds the resin R stored in the main body 321 of the syringe 32 into the through hole 21 by using air pressure by sending air into the syringe 32 through the air tube 352. . The pressurizing mechanism 34 includes an electromagnetic valve 341 and a pressure reducing valve 342. The pressure mechanism 34 adjusts the pressure in the syringe 32 to supply the resin R in an amount corresponding to the amount of the resin R attached to the outer peripheral surface of the linear material L in the through hole 21. The pressure at which air is fed into the syringe 32 by the pressurizing mechanism 34 is smaller than the pressure at which the main agent and the curing agent are discharged by the main agent metering pump 331 and the curing agent metering pump 332. Therefore, the resin R is supplied into the main body 321 of the syringe 32 via the resin tube 351, and the resin R is pushed out into the through hole 21 by air pressure by the air fed by the pressurizing mechanism 34.

  In the present embodiment, the linear material coating apparatus 1 further includes a non-contact liquid level that detects the amount of the resin R in the main body 321 from the side of the main body 321 of the syringe 32 based on the height of the liquid level. A sensor 51 is provided. As this liquid level sensor 51, any known liquid level sensor can be used. Further, a laser displacement sensor 52 for detecting the resin R leaking from the through hole 21 is provided in the vicinity of the introduction port 211 side of the container 20. The laser displacement sensor 52 is used to detect the state of the resin R in the vicinity of the introduction port 211 by irradiating the laser from the laser displacement sensor 52 toward the introduction port 211 of the container 20 and measuring the position of the reflected light in the pixel. doing. That is, depending on the position of the reflected light in the pixel, it can be determined whether the resin R is swollen from the introduction port 211, is recessed from the introduction port 211, or exists without unevenness with respect to the introduction port 211, The presence or absence of leakage of the resin R from the introduction port 211 and the excess or deficiency of the resin R in the through hole 21 can be detected. As the laser displacement sensor 52, any known laser displacement sensor can be used. When a plurality of syringes 32 and containers 20 are provided, a plurality of liquid level sensors 51 and laser displacement sensors 52 are provided in accordance with the number of syringes 32 and containers 20. Further, the laser displacement sensor 52 is not necessarily provided, and it may be determined whether the resin R is leaking from the introduction port 211 by visual observation without providing the laser displacement sensor 52.

  Next, the linear material coating method of the present invention will be described. In the linear material coating method of the present invention, the resin R is attached to the outer peripheral surface of the linear material L, and the linear material L is coated with the resin R over the entire length. One embodiment of the linear material coating method can be performed by the linear material coating apparatus 1.

  That is, the linear material L flows from the introduction port 211 into the through hole 21 and from the outlet port 212 to the outside of the through hole 21. At this time, since the inside of the through hole 21 is filled with the resin R, the resin R adheres to the outer peripheral surface of the linear material L while passing through the through hole 21. Since the outlet port 212 is formed in such a diameter that the resin R covered with the linear material L has a desired thickness, the extra portion adhering to the outer peripheral surface of the linear material L just before passing through the outlet port 212. Resin R is dropped into the through hole 21, and the linear material L covered with the resin R with a desired thickness is led out from the through hole 21.

  The linear material L led out from the through hole 21 is introduced into a baking furnace (not shown), and the resin R is baked and cured in the baking furnace, as in the conventional method of forming an insulating layer on an electric wire. Thereby, the linear material L coat | covered with desired thickness is formed.

  When the thickness of the resin R to be coated on the linear material L is large, if the linear material L is coated with the resin R so as to have a desired thickness in a single process, the resin R is cured before the resin R is cured. May sag and the resin R may not be coated to a desired thickness. In such a case, a plurality of containers 20 are prepared so that the diameter of the outlet port 212 increases stepwise, and the linear material L passes through the container 20 having the outlet port 212 having a larger diameter stepwise. And repeat the above steps. Thereby, the linear material L by which resin R was coat | covered with desired thickness can be formed.

  On the other hand, the resin R in the through hole 21 decreases by an amount attached to the outer peripheral surface of the linear material L and derived from the through hole 21. The pressure mechanism 34 is controlled so that the reduced amount, that is, the amount of the resin R attached to the linear material L can be discharged, and the amount is reduced by the operation of the pressure mechanism 34. A corresponding amount of resin R is supplied into the through hole 21. Specifically, depending on the speed at which the linear material L is moved in the through-hole 21 and the amount of the resin R attached to the linear material L and led out from the through-hole 21, Resin R decreases. Data on the amount of decrease of the resin R is collected by experiments or the like, and the pressurizing mechanism 34 is controlled so as to supply the amount of resin R corresponding to the amount of decrease into the through hole 21 based on the data. In addition, the presence or absence of leakage of the resin R from the through hole 21 is judged by the laser displacement sensor 52 or visual observation. If the resin R is likely to leak from the through hole 21, the air pressure is lowered, and the resin R is reduced to the through hole 21. The pressure mechanism 34 can also be controlled by increasing the air pressure when it is not filled up to the vicinity of the inlet 211. As a result, the resin R can be stored in the through-hole 21 without being excessive or insufficient.

  The resin R decreased in the main body 321 of the syringe 32 by supplying the resin R into the through hole 21 is monitored by a non-contact liquid level sensor 51 provided on the side of the syringe 32. A control device (not shown) controls the operation of the adjustment mechanism 33 so that the amount of the resin R (liquid level height) detected by the liquid level sensor 51 is constant. That is, when the liquid level sensor 51 detects that the resin R in the main body 321 has decreased from a predetermined amount, a predetermined amount of the main agent and the hardener are discharged from the main agent metering pump 331 and the hardener metering pump 332, and the mixing unit In 333, the main agent and the curing agent are mixed, the valve 334 is opened, and the resin R flows into the main body 321. In particular, when the linear material coating apparatus 1 includes a plurality of syringes 32, only the valve 334 communicating with the main body 321 of the syringe 32 in which the decrease in the resin R is detected by the liquid level sensor 51 is opened. Resin R is supplied to the portion 321. Thereby, a predetermined amount of resin R is always stored in the main body 321.

  As described above, in the present embodiment, when the linear material L passes through the through hole 21, the linear material L adheres to the outer peripheral surface of the linear material L and depends on the amount of the resin R derived from the through hole 21. Since the resin R is supplied into the through hole 21, the volume of the through hole 21 is reduced to such an extent that the amount of resin corresponding to the amount of the resin R attached to the outer peripheral surface of the linear material L can be filled. be able to. As a result, the resin R in the through hole 21 can be used up before being cured, and the resin R is not wasted. Moreover, the timing which mixes a main ingredient and a hardening | curing agent is controlled by the liquid level sensor 51, and only the quantity of resin R which can be used until it hardens after mixing is stored in the syringe 32 and the through-hole 21. FIG. . Thus, the necessary amount of the resin R is supplied to the syringe 32 and the through-hole 21, and the resin R is used up immediately. Therefore, even if the resin R has a short pot life, it is used up before the resin R is cured. be able to. Thereby, in the linear material coating | coated apparatus 1 of this embodiment, various resin R can be utilized.

  In addition, since various resins R can be used, it is possible to use a resin having a high viscosity which has been difficult to use in the past. The resin R can be coated thicker than before. As a result, even when the linear material L is coated with the resin R thickly, it can be coated with a small number of times, and the process of coating the linear material L with the resin R can be shortened. Further, since the resin R having a short pot life can be used, the time until the resin R is cured in the subsequent baking furnace can be shortened. Also by this, the time required for the operation of covering the linear material L can be shortened.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning.

  For example, in the above embodiment, the pump mechanism 30 is connected to the inlet 212 side of the container 20, but the pump mechanism 30 is not limited to the inlet 211 side of the container 20, and can be connected to an arbitrary position. it can. For example, as shown in FIG. 5, it may be connected to the central portion of the container 20 or may be connected to the outlet port 212 side of the container 20 as shown in FIG. 6.

  Moreover, in the said embodiment, although the container 20 is hold | maintained at the holder 40 in the horizontal attitude | position, the container 20 can also be hold | maintained at the holder 40 at a vertical attitude | position as shown in FIG. At this time, the container 20 is held such that the introduction port 211 is positioned on the upper side, and the linear material L is flowed from the upper side to the lower side. The supply port 22 to which the syringe 32 is connected is formed on the side surface of the container 20, and the syringe 32 is connected to the container 20 in a state where it is inclined 45 ° to 60 ° with respect to the horizontal plane.

DESCRIPTION OF SYMBOLS 1 Linear material coating | coated apparatus 10 Tank 20 Container 21 Through-hole 211 Inlet port 212 Outlet port 213 Communication port 22 Supply port 30 Pump mechanism 32 Syringe 33 Adjustment mechanism 34 Pressurization mechanism L Linear material R Resin

Claims (3)

A linear material coating apparatus that attaches resin to the outer peripheral surface of the linear material and coats the linear material with resin over the entire length,
A tank in which the resin is not cured,
At least one cylindrical container filled with resin and having a through-hole through which the linear material passes;
A pump mechanism that causes the resin to flow out of the tank and supply the resin into the through hole in an amount corresponding to the amount of the resin attached to the outer peripheral surface of the linear member in the through hole ;
At one end of the through hole, a lead-out port for the linear material that opens with a diameter corresponding to the amount of resin to be attached to the outer peripheral surface of the linear material is formed,
The through-hole has a diameter larger than the diameter of the outlet and a volume capable of filling a resin corresponding to the amount of the resin attached to at least the outer peripheral surface of the linear material,
The pump mechanism includes a syringe that stores resin to be supplied into the through hole, and a pressurizing mechanism that applies air pressure to the syringe to send the resin stored in the syringe into the through hole. One is provided for each container;
A linear material coating apparatus in which an air pressure applied to a syringe by the pressurizing mechanism is smaller than a resin discharge pressure when the resin is supplied into the syringe . The other end of the front SL through hole inlet of the linear material is formed,
Before SL on the inner surface of the through-holes, linear material coating apparatus according to claim 1, communicating port communicating with the supply port of the resin which the pump mechanism is connected is opened. Before SL pump mechanism, linear material coating apparatus according to claim 1 or 2 storage amount of the resin in the syringe is always further comprise adjusting mechanism for adjusting the outflow of the resin from the tank to be constant .

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