JP2008066219A - Water cutoff device of covered wire, and water cutoff method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cutoff device of a covered wire capable of determining quality of a water cutoff condition without executing water cutoff inspection due to submersion under water. <P>SOLUTION: This water cutoff device 10 is provided with: a pressurization chamber 11 equipped with a wire extraction port 11a housing one-side terminal of the covered wire 72 in the inside, and positioning the other-side terminal in the outside; a water cutoff material application device 13 applying a water cutoff material 80 to the one-side terminal of the covered wire 72 housed in the pressurization chamber 11; an air feed device 12 feeding pressurized gas into the pressurization chamber 11; a manometer 30 measuring pressure in the pressurization chamber 11; and a control device 31 determining quality of the water cutoff condition of the covered wire 72 based on a pressure value of the pressurization chamber 11 with the pressurized gas fed therein which is measured by the manometer 30 after the water cutoff material 80 applied by the water cutoff material application device 13 is hardened, and determining that the water cutoff condition of the covered wire 72 is good when the pressure value in the pressurization chamber 11 reaches a predetermined reference value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water stop device and a water stop method for applying a water stop treatment to the end of a covered electric wire whose outer periphery is covered with an insulating coating (in addition, “water stop” in the description of the present invention refers to water intrusion. It means not only blocking but also effectively working on all liquids including water, oil, alcohol, etc., but here it will be explained using “water stop” which is widely used as a name in general ).

  Conventionally, in order to prevent liquids such as water from entering between core wires of a covered electric wire, it is generally performed to stop water at the end of the covered electric wire. In addition, a technique is disclosed in which a liquid water stop material is infiltrated between core wires of a covered electric wire to perform a water stop treatment on the end of the covered electric wire.

In addition, the water stop inspection for confirming the water stop state (water stoppage) of the covered electric wire subjected to the water stop treatment involves submerging one end of the covered electric wire subjected to the water stop treatment into the water and the other end. An inspection method is generally performed in which air is blown into the covered electric wire from a terminal, and whether or not bubbles are generated from the one terminal is visually confirmed by an operator.
JP 2004-355851 A

  However, in the water stop inspection by submergence described above, there is a problem that a lot of labor is required to remove water droplets from the product after the inspection, and there is a concern that the visual confirmation accuracy at the time of inspection may be lowered.

  Therefore, an object of the present invention is to provide a water stop device and a water stop method for a covered electric wire that can determine whether or not a water stop state is good without performing a water stop inspection due to submergence.

  In order to achieve the above-described object, the invention described in claim 1 is an electric wire drawer in which one end of a covered electric wire whose outer periphery is covered with an insulating coating is accommodated inside and the other end is positioned outside. A pressurization chamber provided with an opening, a waterstop material applying means for applying a waterstop material to one end of the covered electric wire accommodated in the pressurization chamber, and an addition device for sending pressurized gas into the pressurization chamber. The pressurized gas measured by the pressure measuring means is fed after the pressure measuring means, the pressure measuring means for measuring the pressure in the pressurized chamber, and the water stopping material applied by the water stopping material applying means are cured. In accordance with the pressure value in the pressurizing chamber in a state where the covered wire is stopped, whether the water stop state of the covered wire is good or not is determined, and when the pressure value in the pressurizing chamber reaches a predetermined reference value, Judging means for judging the state as good; A water stop device covered wire, characterized in that it comprises a.

  In the invention described in claim 2, in the invention described in claim 1, when the determination by the determination unit is not good, the determination unit is configured to apply the water stop material to the water stop material application unit. The apparatus further includes a control unit that repeats the determination of the quality of the water-stopped state of the covered electric wire until the determination by the determination unit becomes good.

  In order to achieve the above-described object, the invention described in claim 3 is characterized in that one end of a covered electric wire whose outer periphery is covered with an insulating coating is positioned inside the pressurizing chamber, and the other end of the covered electric wire. An electric wire placing step for positioning the terminal of the coated wire outside the pressurizing chamber through an electric wire outlet provided in the pressurizing chamber, and applying a water-stopping material to one end of the covered electric wire positioned in the pressurizing chamber In addition, a water-stopping material application / curing step for curing the water-stopping material, a pressure measuring step for measuring the pressure in the pressurizing chamber in a state where pressurized gas is being fed, and the pressure measuring step were measured. Based on the pressure value in the pressurizing chamber, the quality of the water stop state of the covered wire is determined, and the water stop state of the covered wire is determined to be good by the pressure value in the pressurizing chamber reaching a predetermined reference value. Judgment process to judge A method for stopping water covered electric wire, characterized in that it successively comprises a.

  In the invention described in claim 4, in the invention described in claim 3, when the determination in the determination step is not good, the steps from the water stopping material application / curing step to the determination step are determined as the determination. It is characterized by repeating until the judgment in the process becomes good.

  According to the invention described in claim 1, the water-stopping material is applied to the one end of the covered electric wire that is passed through the electric wire outlet and positioned in the pressurizing chamber by the water-stopping material applying means. Penetrates and cures between the core wires and between the core wires and the insulation coating, thereby stopping the one end. Subsequently, pressurized gas is sent into the pressurized chamber by the pressurizing means, and the pressure value in the pressurized chamber is read by the pressure measuring means and the determining means, and the quality of the water stop state of the one terminal is determined. At this time, if the determination of the water stop state is good, the pressure value in the pressurization chamber increases to reach the reference value, and if the determination of the water stop state is not good, the inside of the covered wire passes through the outside of the pressurization chamber. Since the gas leaks, the pressure value in the pressurizing chamber does not reach the reference value.

  According to the second aspect of the present invention, when the control means determines that the water stop state of the determination means is not good, the control means causes the water stop material application means to apply the water stop material and causes the determination means to The determination of whether the water stop state is good or not is repeated until the determination by the determination means becomes good.

  According to the invention described in claim 3, in the electric wire placing step, one end of the covered electric wire whose outer periphery of the core wire is covered with the insulating coating is positioned inside the pressurizing chamber, and the other end of the covered electric wire is arranged. A terminal is positioned outside the pressurizing chamber through a wire outlet provided in the pressurizing chamber. Subsequently, the process proceeds to a water stop material application / curing step, where the water stop material is applied to one end of the covered electric wire positioned in the pressure chamber and the water stop material is cured. Thereafter, the pressure measurement process is performed to measure the pressure in the pressurization chamber in a state where the pressurized gas is being fed, and the process proceeds to the determination process based on the pressure value in the pressurization chamber measured in the pressure measurement process. The quality of the water-stopped state of the covered electric wire is determined. At this time, if the determination of the water stop state is good, the pressure value in the pressurization chamber increases to reach the reference value, and if the determination of the water stop state is not good, the inside of the covered wire passes through the outside of the pressurization chamber. Since the gas leaks, the pressure value in the pressurizing chamber does not reach the reference value.

  According to the invention described in claim 4, when the determination in the determination step is not good, the steps from the water-stopping material application / curing step to the determination step until the determination in the determination step is good. repeat.

  According to the invention described in claim 1, since the quality of the water stop state is determined continuously with the application / curing of the water stop material in the pressure chamber, a total inspection of the covered electric wires subjected to the water stop treatment is performed. In addition, it is not necessary to move the covered electric wire to another facility for the inspection of the water stop state as in the prior art, and the number of work steps can be reduced. In addition, since the water stop device determines the water stop state based on the pressure value in the pressurized chamber, there is no need to perform a water stop inspection due to submergence, and troublesome wiping and drying of the product is not required. .

  According to the invention described in claim 2, since the application of the water stop material and the determination of the water stop state are repeated until the determination of the water stop state is good, all the water stop states of the final covered electric wire are all Become good.

  According to the invention described in claim 3, since the pressure measurement process and the determination process are performed in succession to the water stopping material application / curing process in the pressure chamber, the total number of covered electric wires subjected to the water stopping process is inspected. In addition, it is not necessary to move the covered electric wire to another facility for the inspection of the water stop state as in the prior art, and the number of work steps can be reduced. In addition, since the water stop method determines the water stop state based on the pressure value in the pressurized chamber, there is no need to perform a water stop inspection due to submergence, and troublesome work such as wiping or drying water is not required. .

  According to the invention described in claim 4, since the steps from the water-stopping material application / curing step to the determination step are repeated until the determination of the water-stop state in the determination step is good, All water conditions are good.

  Hereinafter, a water stop device and a water stop method according to a first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. Further, in the present embodiment, a single covered electric wire having an insulation coating formed along the periphery of a plurality of core wires and a bundle of the core wires, and an exposed portion of the bundle of core wires exposed at one end of the covered electric wire. Taking a wire harness having a crimped terminal as an example, a water-stop device and a water-stop device for forcibly penetrating a water-stop material between the core wires from the exposed portion of the bundle of core wires to the inside of the insulation coating A method will be described.

  FIG. 1 is a schematic configuration diagram of the water stop device 10. As shown in FIG. 1, the water stop device 10 includes a water stop material between the plurality of core wires 75 of one covered electric wire 72 constituting the wire harness 70 and between the plurality of core wires 75 and the insulation coating 74. It is a water stop device that forcibly infiltrates 80.

  The wire harness 70 is in a developed state of a terminal 71 having a rectangular grounding portion 76 surrounding the core wire 75 exposed by removing the insulating coating 74 at one end of the covered electric wire 72 and the end of the insulating coating 74. The crimping portion 73 is crimped, and thereby, the core wire 75 is electrically connected and fixed to the terminal 71, and the insulated wire 74 with the terminal 71 is fixed to the terminal 71.

  The water stop device 10 includes a pressurizing chamber 11 that houses and seals one end of the covered electric wire 72 including an exposed portion of the core wire 75 that is partially exposed from the insulating coating 74 of the covered electric wire 72, and a pressurizing chamber 11 and an air delivery device as a pressurizing means for sending pressurized gas from the outside of the pressurizing chamber 11 into the pressurizing chamber 11 so that a pressure difference is generated between the inside of the pressurizing chamber 11 and the outside of the pressurizing chamber 11. 12, a pressure gauge 30 connected to the pressurizing chamber 11 and serving as a pressure measuring means for measuring the pressure in the pressurizing chamber 11, and an exposed portion of the core wire 75, and water is stopped at the exposed portion. A water stop material applying device 13 as a water stop material applying means for applying a material 80 (liquid water stop material 80 or a solid water-resistant water stop material 80), an exhaust means 14, and the water stop device 10 as a whole. And a control device 31 that performs control.

  The pressurizing chamber 11 includes a box-shaped pressurizing chamber main body 15 having an opening in the upper portion, and a pressurizing chamber lid body 16. The pressurizing chamber lid 16 is attached so as to cover the opening of the pressurizing chamber main body 15 and seals the inside of the pressurizing chamber 11. The pressurizing chamber 11 detects a sealed state in which the pressurizing chamber cover 16 covers the opening of the pressurizing chamber main body 15 and an open state in which the opening of the pressurizing chamber main body 15 is opened. A sensor (not shown) is provided, and information on whether the pressurization chamber 11 is in a sealed state or an open state is transmitted from the sensor to a control device 31 described later.

  Further, the pressurizing chamber 11 is provided with an electric wire outlet 11 a that communicates from the inside of the pressurizing chamber 11 to the outside. The wire outlet 11a is formed across both the pressurizing chamber lid 16 and the pressurizing chamber main body 15 in a state where the pressurizing chamber lid 16 is attached so as to cover the opening of the pressurizing chamber main body 15. It is a space for the drawn wire. Seal members 17 a and 17 b are attached to the edge of the pressurizing chamber lid 16 and the edge of the pressurizing chamber main body 15 facing the electric wire outlet 11 a.

  The seal members 17a and 17b are in close contact with the outer surface of the covered electric wire 72 passed through the electric wire outlet 11a, and make it difficult for gas inside the pressurizing chamber 11 to leak to the outside. Moreover, when handling the terminal part and intermediate | middle joint part which the core wire 75 of the some covered electric wire 72 gathered and connected, if the pressurization chamber 11 is provided with two or more in the pressurization chamber 11 mentioned above, the electric wire outlet 11a and seal member 17a, 17b will be provided. Good. Alternatively, a plurality of covered electric wires 72 may be arranged in parallel between the pair of seal members 17a and 17b. Or it may remain in a bundle.

  The air delivery device 12 is, for example, an air (air) injection supply device that is usually provided in a general factory, and an air supply pipe 18 is connected in communication with the interior of the pressurizing chamber 11. The air delivery device 12 is driven in a sealed state in which the pressurizing chamber lid body 16 is attached to the pressurizing chamber main body 15, whereby air having a predetermined pressure (ie, pressurized gas) is passed through the air supply pipe 18. A large pressure difference is generated with respect to the outside of the pressurizing chamber 11 by being introduced into the pressurizing chamber 11. Moreover, the said air delivery apparatus 12 can also use the apparatus which changes the pressure to pressurize (manually or automatically) with an electric wire size, a number, and a water stop material application amount.

  The pressure gauge 30 is of a sensor type, and sequentially transmits the measured pressure value in the pressurizing chamber 11 to the control device 31.

  In the water-stopping material application device 13, the water-stopping material supply pipe 19 passes through the pressurizing chamber lid 16 and is opened inside the pressurizing chamber 11. A predetermined amount of the material 80 is applied to the exposed portion of the core wire 75 and the crimping portion 73 of the terminal 71.

  The water stop material 80 preferably has a certain degree of fluidity and viscosity at the time of permeation treatment into the covered electric wire 72, and after the permeation is cured and the viscosity is increased, the property does not change over time. . Specifically, silicone resin, silicone rubber, grease, butyl rubber, epoxy resin, acrylic resin, thermoplastic resin, and other adhesives having viscosity and elasticity are suitable as the water stop material 80.

  The exhaust means 14 incorporates an opening / closing valve 20 in the exhaust passage 21, and the exhaust passage 21 communicates with the pressurizing chamber body 15 and opens in the pressurizing chamber 11. The on-off valve 20 of the exhaust means 14 is closed when the application of the water blocking material 80 is started, and is opened when the application and curing of the water blocking material 80 is completed. That is, the exhaust unit 14 decompresses the inside of the pressurizing chamber 11 whose pressure is higher than that outside the pressurizing chamber 11 by opening the on-off valve 20 of the exhaust passage 21.

  The control device 31 includes a control unit including a CPU, a ROM, a RAM, and the like, and a display unit such as a monitor capable of various input operations of the water stop device 10. The control device 31 is connected to the pressurizing chamber 11, the air delivery device 12, the pressure gauge 30, the water stop material application device 13, and the exhaust means 14 described above, and drives them according to a program stored in the ROM. Various processes are performed. Further, the control device 31 constitutes a determination unit and a control unit described in the claims.

  Next, the water stop method using such a water stop apparatus 10 is demonstrated, referring the flowchart of FIG. 2, and the graph of FIG. FIG. 2 is a flowchart showing processing performed by the CPU of the control device 31 in order to drive each device of the water stop device 10 according to a predetermined program. FIG. 3 is a graph showing the pressure value in the pressurizing chamber 11 that changes over time.

  First, when a power button (not shown) provided on the water stop device 1 is pressed by an operator or the like, the power of the water stop device 1 is turned on, and the processing of the control device 31 is started. And while progressing to step 1, the other terminal of the covered electric wire 72 in which the terminal 71 is already connected to one terminal is positioned outside the pressurizing chamber 11. One terminal accommodated in the pressurizing chamber 11 of the covered electric wire 72 is fixed by an appropriate fixing member (not shown) and positioned at a predetermined position. In this state, the air delivery device 12 is not driven, the on-off valve 20 of the exhaust means 14 is opened, and the water stop material coating device 13 is not driven. Then, the pressurizing chamber lid 16 is attached to the pressurizing chamber main body 15 so as to cover the opening. In step 1, the control device 31 described above whether the pressurizing chamber 11 is in a sealed state or an open state, that is, whether the pressurizing chamber lid body 16 has closed the opening of the pressurizing chamber body 15. The determination is made based on information from the sensor in the pressurizing chamber 11. If the pressurizing chamber 11 is not sealed (NO in step S1), the process waits until the pressurizing chamber 11 is sealed (repeats step 1), and it is determined that the pressurizing chamber 11 is sealed. (YES in step S1) The process proceeds to step S2. Moreover, step S1 is corresponded to the electric wire mounting process described in the claim.

  In step S <b> 2, the control device 31 transmits a command for closing the on-off valve 20 of the exhaust unit 14 to close the on-off valve 20. And it progresses to step S3 and the drive of the air delivery apparatus 12 is started. That is, pressurized gas is supplied into the pressurizing chamber 11. Further, the pressure value P in the pressurizing chamber 11 in step S3 is “P0-P1-P2” shown in FIG. In FIG. 3, the vertical axis P represents the pressure value in the pressurizing chamber 11, and the horizontal axis t represents the elapsed time. Further, P0 is a value of gas pressure supplied from the air delivery device 12 into the pressurizing chamber 11. P <b> 1 is a gas pressure value corresponding to the amount of gas leaking out of the pressurizing chamber 11 from a slight gap between the pressurizing chamber lid body 16 and the pressurizing chamber body 15. P2 is a gas pressure value corresponding to the amount of gas discharged from the portion of the covered electric wire 72 located outside the pressurizing chamber 11 through the insulating coating 74. That is, in the state of step S3, since the water stop process of the covered wire 72 has not been started, the pressure value P in the pressurizing chamber 11 is a value obtained by subtracting P1 and P2 from P0. And if the control apparatus 31 starts the drive of the air delivery apparatus 12, it will progress to step S4.

  In step S <b> 4, the control device 31 causes the water stop material application device 13 to start applying the water stop material 80. Then, the process proceeds to step S5. In step 5, it is determined whether or not the application number counter is zero. The “application number counter” is generated in the RAM of the control device 31 and stores the number of application of the water stop material 80 to one covered electric wire 72. When the application number counter is 0, that is, when the water stop material 80 is applied for the first time (YES in Step S5), the process proceeds to Step S6, and the water stop material 80 is applied until the application amount of the water stop material 80 reaches M1. Continued. This M1 is an optimum predetermined amount for stopping the covered electric wire 72 and is larger than M2 described later. And if the application quantity of the water stop material 80 reaches M1 (YES of step S6), it will progress to step S7 and application of the water stop material 80 will be stopped (finished). In step S8, the application number counter is incremented to +1. Then, the process proceeds to step S9.

  In step S <b> 9, the timer 31 is started in the control device 31 and measurement of the setting time of the water blocking material 80 is started. In step S10, it is determined whether or not the timer T1 has passed a predetermined time TX. The predetermined time TX is a time required for the applied water stop material 80 to be cured. During this predetermined time TX, since the pressurized gas is sent into the pressurizing chamber 11 by the air delivery device 12, the pressurizing chamber passes through the insulating coating 74 from the direction in which the gas flows, that is, from the pressurizing chamber 11. The water blocking material 80 permeates in a direction toward the outside of 11. Thus, the water stop material 80 is cured as time passes, so that the pressure value P in the pressurizing chamber 11 gradually increases as shown between t1 and t2 in FIG. In addition, t1 in FIG. 3 shows the time of starting application | coating of the water stop material 80, and t2 has shown the time when predetermined time TX passed. If it is determined in step S10 that the predetermined time TX has elapsed (YES in step S10), the process proceeds to step S11. Steps S4 to S10 correspond to the water-stopping material application / curing step described in the claims.

  In step S <b> 11, the pressure value P in the pressurizing chamber 11 transmitted from the pressure gauge 30 is read into the control device 31. Then, the process proceeds to step S12, and it is determined whether or not the pressure value P read in step S11 is a certain value or more. This constant value is P0-P1 shown in FIG. That is, in the state where the covered electric wire 72 is completely stopped, P2 described above becomes zero, so the pressure value P in the pressurizing chamber 11 is a value obtained by subtracting P1 from P0. Further, when the pressure value P in the pressurizing chamber 11 does not become P0-P1 after the predetermined time TX has elapsed (that is, after t2), the covered electric wire 72 is not completely stopped, and the insulation coating 74 is not stopped. It means that gas leaks outside the pressurizing chamber 11 through the inside. That is, it means that the water stop state is not good. If it is determined in step S12 that the pressure value P is greater than or equal to a certain value (YES in step S12), that is, if it is determined that the water stop state is good, the process proceeds to step S13, where the air delivery device 12 While stopping the drive, the process proceeds to step S14, where the on-off valve 20 of the exhaust means 14 is opened. As a result, the air in the pressurizing chamber 11 passes through the exhaust passage 21 and is discharged out of the pressurizing chamber 11, and the pressure in the pressurizing chamber 11 is reduced. Further, step S11 corresponds to the pressure measurement process described in the claims, and step S12 corresponds to the determination process described in the claims.

  Thereafter, the process proceeds to step S15, and the pressurizing chamber cover 16 is opened by an operator or the like (which may be automatically performed) when the gas is sufficiently discharged. In step S <b> 15, the control unit 31 determines whether or not the pressurizing chamber cover 16 has opened the opening of the pressurizing chamber main body 15 based on the information from the sensor of the pressurizing chamber 11 described above. If the pressurizing chamber 11 is not in the open state (NO in step S15), the process waits until the pressurizing chamber 11 is in the open state (repeats step S15), and it is determined that the pressurizing chamber 11 is in the open state. (YES in step S15), the process proceeds to step S16.

  In step S16, the application number counter is cleared, and after a series of processes is completed, the process returns to step S1, and the water stop process for the next new covered wire 72 is repeated. If the wire harness 70 (covered electric wire 72) that has been completely water-stopped in this way is taken out from the pressurizing chamber 11, the water-stop processing of the water-stop material 80 to the wire harness 70 is completed. In addition, since the wire harness 70 (covered electric wire 72) subjected to such a series of treatments has already been confirmed to be in a water-stopped state (water-stopping) as described above, it is necessary to perform a submersion inspection or the like with another facility. There is no.

  In step S12, when the pressure value P in the pressurizing chamber 11 is not equal to or greater than a certain value (NO in step S12), the water stopping state of the covered electric wire 72 is not good, and the process proceeds to step S17. In step S17, it is determined whether or not the application counter is 2. Then, when the application number counter is not 2, that is, when the application number of the water-stopping material 80 so far is only one (NO in Step S17), the process returns to Step S4, and the second water-stopping material 80 is applied. Is started.

  Then, as described above, whether or not the application number counter is 0 is determined in step S5. In this case, since the application counter is 1 (NO in step S5), the process proceeds to step S18, and the application of the water stop material 80 is continued until the application amount of the water stop material 80 reaches M2. This M2 is a smaller amount (for example, a half amount) than M1 that is the first coating amount described above. Then, when the application amount of the water stop material 80 reaches M2 (YES in Step S18), the process proceeds to Step S7, and the application of the water stop material 80 is stopped (terminated). In step S8, the application number counter is incremented to +1. At this time, the application number counter is 2. Thereafter, steps S9 to S16 described above are repeated, and if the pressure value P is determined to be equal to or greater than a certain value (that is, the water stop state is good) in step S12 (YES in step S12), the water stop material to the wire harness 70 is determined. 80 water stop treatment is completed.

  In addition, when it is determined in step S17 that the application number counter is 2 (YES in step S17), it means that the water stop state is not good even after the application of the water stop material 80 twice. Some failure of the water stop device 1 may be considered, and the process proceeds to step S19 to display an error message on the display means of the control device 31. In step 20, it is determined whether or not the error message confirmation button has been pressed by an operator or the like. If it is determined in step 20 that the confirmation button has been pressed (YES in step S20), the process proceeds to step S13, and the water-stopping material 80 is stopped on the wire harness 70 through steps S13 to S16 as described above. Processing is complete.

  According to the present embodiment, since the quality of the water stop state is determined in succession with the application and curing of the water stop material 80 in the pressurizing chamber 11, a total inspection of the covered electric wires 72 subjected to the water stop treatment is performed. It becomes possible, and it is not necessary to move the said covered electric wire to another installation for the inspection of a water stop state conventionally, and can reduce a work process. In addition, since the water stop device 1 determines the water stop state based on the pressure value in the pressurizing chamber 11, there is no need to perform a water stop inspection due to submersion, and wiping or drying of troublesome products such as water It does not take time and effort.

  In addition, when the determination of the first water stop state is not good, since the application of the water stop material 80 and the determination of the water stop state are performed again, the final water stop state of the covered electric wire 72 is all good. Become.

  Further, since the pressurized gas is continuously fed into the pressurizing chamber 11 by the air delivery device 12 during application of the water-stopping material 80 and curing of the water-stopping material 80, the core wire 75 of the water-stopping material 80. Penetration into the space can be improved.

  Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 4 and the following description of the second embodiment, components having the same configurations and functions as those already described are denoted by the same or corresponding symbols, and description thereof will be omitted or simplified.

  As shown in FIG. 4, the water stop device 40 does not include the water stop material coating device 13 as compared with the first embodiment, and instead heats and melts the hot melt material 81 that is a water stop material. A heating device 41 for making it liquid, and a water-stopping material application device 42 for applying a hot melt material 81 that is a water-stopping material.

  The heating device 41 has a communication pipe 43 connected to the pressurizing chamber body 15 and is driven to supply hot air to the crimping portion 73 of the terminal 71 through the communication pipe 43.

  In the water stop device 42, the nozzle 44 penetrates the pressurizing chamber lid 16 and opens inside the pressurizing chamber 11, and melts the hot melt material 81 stored therein by driving, and passes through the nozzle 44. A predetermined amount is dropped (or applied) onto the exposed portion of the core wire 75 and the crimping portion 73 of the terminal 71.

  Examples of the hot melt material 81 include those in which the initial state is solid or semi-solid, melts by heating, and then cures immediately by being placed at room temperature. The hot melt material 81 does not need to be mixed and can be used after being dissolved in a necessary amount, so there is no loss.

  The water stop method using the water stop device 40 having such a configuration may be such that the heating device 41 is driven during steps S4 to S10 in the flowchart of FIG. 2 described in the first embodiment. Is omitted.

  In the first and second embodiments described above, the number of times of application is set to 2 times, and an error message is displayed when exceeding the number of times of application, but in the present invention, it is repeated until the determination of the water stop state is good. Anyway.

  The water stop device of the present invention can also be used only for determining the water stop state of the covered electric wire 72 in a state where the water stop members 80 and 81 are applied and cured.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

It is a schematic block diagram of the water stop apparatus which concerns on the 1st Embodiment of this invention. It is the flowchart which showed the process which CPU of a control apparatus performs in order to drive each apparatus of the water stop apparatus shown by FIG. 1 according to a predetermined program. It is the graph which showed the pressure value in the pressurization chamber which changes with progress of time shown by FIG. It is a schematic block diagram of the water stop apparatus which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

10, 40 Water stop device 11 Pressurizing chamber 11a Wire outlet 12 Air delivery device (pressurizing means)
13, 42 Water-stop material applicator (water-stop material applicator)
30 Pressure gauge (pressure measuring means)
31 Control device (determination means, control means)
72 Insulated wire 74 Insulation coating 75 Core wire 80, 81 Water stop material

Claims (4)

A pressurizing chamber in which one end of a covered electric wire whose outer periphery is covered with an insulating coating is housed inside and a wire outlet that positions the other end to the outside is provided; and
A water stop material applying means for applying a water stop material to one end of the covered electric wire housed in the pressure chamber;
Pressurizing means for sending pressurized gas into the pressurizing chamber;
Pressure measuring means for measuring the pressure in the pressurizing chamber;
Based on the pressure value in the pressurizing chamber in the state where the pressurized gas measured by the pressure measuring means is fed after the water stopping material applied by the water stopping material applying means is cured. A determination unit that determines whether the water stop state is good and determines that the water stop state of the covered wire is good when the pressure value in the pressure chamber reaches a predetermined reference value;
A water stop device for a covered electric wire, comprising:   When the determination by the determination unit is not good, the determination unit determines that the water stop material is applied to the water stop material application unit and the determination unit determines whether the water stop state of the covered electric wire is good or bad. The water stop device for a covered electric wire according to claim 1, further comprising a control unit that repeats until the quality becomes good. One end of the covered electric wire whose outer periphery of the core wire is covered with an insulating coating is positioned inside the pressurizing chamber, and the other end of the covered electric wire is passed through the electric wire outlet provided in the pressurizing chamber. An electric wire placing process positioned outside the
A water stopping material application / curing step of applying a water stopping material to one end of the covered electric wire positioned in the pressure chamber and curing the water stopping material;
A pressure measuring step of measuring the pressure in the pressurized chamber in a state where pressurized gas is being sent;
Based on the pressure value in the pressurizing chamber measured in the pressure measuring step, whether the water stop state of the covered electric wire is good or bad is determined, and when the pressure value in the pressurizing chamber reaches a predetermined reference value, A determination step for determining that the water stoppage state of the electric wire is good,
The water-stop method of the covered electric wire characterized by having sequentially.   4. The method according to claim 3, wherein when the determination in the determination step is not good, the steps from the water-stopping material application / curing step to the determination step are repeated until the determination in the determination step is good. Water-stop method for coated wires.

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