JP2006258439A - Inspection method of winding pitch of wire of rubber hose and inspection device for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection method of a winding pitch of wire of a rubber hose and a device for the same capable of attaining improvement in reduction of the inspection operation and in the quality of the rubber hose, capable of easily and precisely inspecting the winding pitch wound when forming the rubber hose as the constitution member wound in a spiral shape. <P>SOLUTION: The position C1 at which wires 10 are wound spirally, and the position C2 where the layer rubber 13 is wound outside of the wires 10, a sensor 2 is arranged between them and detects the wire 10 moving while winding and generates detection signals, the data process device 7 calculates the winding pitch of the wire 10 based on the detection signals and moving speed of the mandrel 14, and the comparison results between the calculated pitch and the prescribed pitch previously registered on the data process device 7 are displayed on the monitor 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inspection method and an inspection device for a winding pitch of a wire of a rubber hose, and more specifically, it is possible to easily and accurately inspect a winding pitch of a wire wound spirally as a constituent member in forming a rubber hose. The present invention relates to an inspection method and an inspection apparatus for a winding pitch of a wire of a rubber hose capable of reducing work and improving quality.

  A high-pressure rubber hose or the like is provided with a reinforcing layer formed by winding a metal wire in a spiral shape in order to withstand the pressure of the fluid flowing through the inside. Since the winding pitch of the wire wound in a spiral shape, that is, the arrangement of the wires affects the durability of the rubber hose, a highly accurate inspection is required.

  Conventionally, the inspection of the winding pitch of the wire wound in a spiral shape is mainly inspected by an inspector visually in the molding process, and there is a limit to improving the inspection accuracy, and the work load is large. was there.

  In addition, a method of removing the rubber wound around the outside after the molding process and checking the winding pitch is inspected, but in addition to being unable to inspect the entire length Since the work is difficult and inefficient, and inspection is performed after molding, there is a problem that the yield is greatly reduced when the winding pitch is defective.

As a nondestructive inspection method for a hose, a method capable of accurately inspecting the internal state of a flexible hose using radiation has been proposed (for example, see Patent Document 1). However, in the inspection using such radiation, there is a limit in increasing the inspection speed, and there is a problem that the equipment becomes large and the cost is high.
JP 2003-344313 A

  An object of the present invention is to provide a rubber hose wire that can easily and accurately inspect the winding pitch of a wire wound in a spiral shape as a constituent member in the molding of a rubber hose, and can reduce inspection work and improve quality. An object is to provide a winding pitch inspection method and inspection apparatus.

  In order to achieve the above object, the method for inspecting the winding pitch of the wire of the rubber hose according to the present invention sequentially winds the constituent members including the wire wound spirally while moving in one direction with the mandrel as a core. A method for inspecting a winding pitch of a wire of a rubber hose to be molded, wherein a position where the wire is wound in a spiral shape and a next component member is wound around the outside of the wire wound in the spiral shape A sensor disposed between the wire and the wire wound in the spiral shape to detect a detection signal and transmit a detection signal, and the data processing device detects the wire based on the detection signal and the moving speed of the mandrel. By calculating a winding pitch of the spiral and comparing the calculated pitch with a predetermined pitch registered in advance in the data processing device. It is characterized in that for checking the winding pitch of the wound Tagged wire.

  The rubber hose wire winding pitch inspection device according to the present invention is formed by sequentially winding components including a wire wound in a spiral shape while moving in one direction with a mandrel as a core. An apparatus for inspecting a winding pitch of a wire of a rubber hose, wherein a position at which the wire is wound in a spiral shape and a position at which the next component member is wound around the outside of the wire wound in the spiral shape A sensor disposed therebetween, a data processing device connected to the sensor, and a monitor connected to the data processing device, the sensor detecting the wire wound in the spiral shape to move A detection signal, and the data processing device calculates a winding pitch of the wire based on the detection signal of the sensor and a moving speed of the mandrel, and the monitor It is characterized in that for displaying the pitch the calculated.

  According to the method for inspecting the winding pitch of the wire of the rubber hose according to the present invention, the components including the wire wound in a spiral shape are sequentially wound around the outside while being moved in one direction with the mandrel as a core. A method for inspecting a winding pitch of a wire of a rubber hose between a position where a wire is wound in a spiral shape and a position where a next component is wound around the outside of the wire wound in the spiral shape. The sensor arranged in the sensor detects the wire wound in the spiral shape and sends a detection signal, so it can detect the wire wound in the spiral shape and send an accurate detection signal. it can.

  Since the data processing device calculates the winding pitch of the wire based on the detection signal and the moving speed of the mandrel, an accurate pitch can be calculated. Since the comparison between the calculated pitch and the predetermined pitch registered in advance in the data processing apparatus can be performed quickly and accurately, the winding pitch of the spirally wound wire can be easily and accurately determined. Well, you can inspect for the full length.

  As a result, the winding pitch of the wire wound in a spiral shape, that is, an abnormality in the arrangement of the wires can be detected at an early stage in the forming process, and the inspection work can be reduced and the quality can be improved. .

  According to the inspection device for the winding pitch of the wire of the rubber hose of the present invention, the position where the wire is wound in a spiral shape, and the position where the next component member is wound around the outside of the wire wound in the spiral shape The sensor placed between the two wires directly detects the wire wound in the spiral shape and sends a detection signal, so the wire wound in the spiral shape is directly detected and an accurate detection signal is output. You can make a call.

  The data processing device connected to the sensor calculates the wire winding pitch quickly and accurately based on the detection signal of the sensor and the moving speed of the mandrel, and the monitor connected to the data processing device calculates the calculation. Since the pitch is displayed, the winding pitch of the wire wound spirally with respect to the entire length can be inspected easily and accurately.

  As a result, the winding pitch of the wire wound in a spiral shape, that is, an abnormality in the arrangement of the wires can be detected at an early stage in the forming process, and the inspection work can be reduced and the quality can be improved. .

  Hereinafter, the inspection method and the inspection device for the winding pitch of the wire of the rubber hose of the present invention will be described based on the embodiments shown in the drawings. FIG. 1 shows an overall outline of an inspection apparatus 1 according to an embodiment. For the sake of explanation, a part of a braiding machine 9b in a molding process in which the inspection apparatus 1 is installed is cut away so that the internal state can be understood.

  The rubber hose 12 in the middle of the molding to be inspected is formed by winding the inner layer rubber, the reinforcing layer, the interlayer rubber 13, the outer layer rubber, etc., which are constituent members, around the mandrel 14 moving in one direction as a core. The In this molding process, the wire 10 constituting the reinforcing layer is spirally wound around the rubber hose 12 in the middle of molding by the braiding machine 9a upstream of the mandrel 14 in the moving direction. When further moved, the interlayer rubber 13 is guided by the guide roll 11 and wound around the outside of the wire 10 wound in a spiral shape. When the wire moves further, the wire 10 is wound around the outside of the rubber hose 12 by the braiding machine 9b on the downstream side in the moving direction. Similarly, the interlayer rubber 13 is wound around the outside of the rubber hose 12 inside the braiding machine 9b. Attached.

  In this embodiment, the inspection apparatus 1 in which the sensor 2 is arranged between the winding position C1 of the wire 10 by the upstream braiding machine 9a and the winding position C2 of the interlayer rubber 13 and the wire by the downstream braiding machine 9b. 10 is installed between the winding position C3 and the winding position C4 of the interlayer rubber 13. However, since both inspection apparatuses 1 have the same configuration, the downstream inspection is performed. In the apparatus 1, only the sensor 2 is illustrated and the others are omitted, and description will be made based on the upstream inspection apparatus 1.

  The inspection apparatus 1 includes a sensor 2 arranged at the above-described position, a data processing device 7 connected to the sensor 2, a monitor 8 and an external transmission device 15 connected to the data processing device 7.

  An example of the sensor 2 is a pressure sensor 2a that comes into contact with the surface of the wire 10 wound spirally around the rubber hose 12 being molded as shown in FIG. The detection part 3 of this pressure sensor 2a detects each wire 10 by contacting the moving wire 10 one after another, and issues a detection signal corresponding to the winding pitches P1, P2, and P3.

  The pressure sensor 2a is always fixed by the holding member 6 so as to be in proper contact with the wire 10, and has a length of several pitches or more of the wire 10 in the moving direction so that the wire 10 smoothly It can slide on the top.

  According to the pressure sensor 2a, since the detection is performed by directly contacting the wire 10 wound in a spiral shape before the interlayer rubber 13 is wound, an accurate detection signal can be transmitted.

  Further, the wire 10 to be wound in a spiral shape is immediately wound with a component such as an interlayer rubber 13 on the outside thereof, and the molding equipment is complicated. However, by using the small sensor 2, it can be easily arranged inside the braiding machine 9b, as shown in FIG.

  The detection signal transmitted from the sensor 2 is transmitted to the data processing device 7. The data processor 7 is inputted with the moving speed of the mandrel 14, that is, the moving speed of the wire 10 wound in a spiral shape to be inspected, and detected based on the detection signal and the moving speed. The winding pitch of the wire 10 is calculated. In addition, a predetermined winding pitch P of the wire 10 wound in a spiral shape to be inspected is registered in the data processing device 7, and the calculated pitch is compared with the registered pitch P.

  This comparison process is schematically shown in FIG. Based on the detection signal and the movement speed data of the mandrel 14, the data processing device 7 shows, for example, a sawtooth wave (curve A) indicating a peak of vertical displacement when the wire 10 to be inspected contacts the detection unit 3 of the pressure sensor 2a. ) And the peak intervals are calculated as winding pitches P1, P2, and P3.

  In the data processing device 7, for example, a peak interval of a sawtooth wave (curve B) indicating a regular peak is registered as a predetermined pitch P of the wire 10. Here, the calculated pitches P1, P2, and P3 are compared with the predetermined pitch P, and it is detected that the calculated pitch P2 is larger than the predetermined pitch P by the length G.

  When the comparison results with the calculated pitches P1, P2, P3 and the predetermined pitch P are displayed as numerical values and graphs on the monitor 8 connected to the data processing device 7, the inspector can easily and accurately view the display. It becomes possible to inspect the winding pitch of the wire 10 wound spirally over the entire length.

  As a result, the winding pitch, that is, the abnormal arrangement of the wires 10 can be detected at an early stage in the forming process, and the inspection work can be reduced and the quality can be improved.

  Further, when the difference G between the calculated pitch and the predetermined pitch P exceeds a predetermined value, it is determined that the winding pitch is defective, and the data processing device 7 issues an instruction signal to the external transmission device 15 to transmit the abnormality. By doing so, the inspection work of the inspector can be performed only when there is an abnormality, and the work burden can be further reduced.

  As the external transmission device 15, general means such as a warning light and an alarm can be used. The monitor 8 may function as the external transmission device 15 to display a warning.

  As the sensor 2, in addition to the above-described pressure sensor 2a, an optical sensor 2b can be exemplified as shown in FIG. The optical sensor 2b is fixed by the holding member 6 apart from the surface of the wire 10 wound in a spiral shape. The light (laser light or the like) emitted from the light emitting unit 4 is reflected by the wire 10 and the reflected light is received by the light receiving unit 5, thereby detecting the moving wire 10 one after another and according to the winding pitches P1, P2, and P3. A detection signal is issued. According to this optical sensor 2b, before the interlayer rubber 13 is wound, the state of the wire 10 can be directly detected without contact.

  In the embodiment, the winding pitch of all the wires 10 wound in a spiral shape is inspected. However, the wire 10 to be inspected can be appropriately determined, for example, an intermediate layer that is difficult to inspect after forming. Alternatively, the wire 10 can be limited to the inner circumferential layer.

1 is an overall schematic diagram illustrating a wire winding pitch inspection apparatus according to the present invention. It is an enlarged view which shows the use condition of the pressure sensor used for this invention. It is an enlarged view which shows the use condition of the optical sensor used for this invention. It is explanatory drawing which shows typically the comparison with the calculation pitch and predetermined pitch in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection apparatus 2 Sensor 2a Pressure sensor 2b Optical sensor 3 Detection part 4 Light emission part 5 Light reception part 6 Holding member 7 Data processing apparatus 8 Monitor 9 Braiding machine 10 Wire 11 Guide roll 12 Rubber hose in the middle of molding 13 Interlayer rubber 14 Mandrel 15 External transmission apparatus

Claims (6)

  A method for inspecting a winding pitch of a rubber hose wire formed by sequentially winding a component member including a wire wound spirally while moving in one direction with a mandrel as a core, the wire Is wound in a spiral shape by a sensor arranged between a position where the wire is wound in a spiral shape and a position where the next component member is wound around the outside of the wire wound in the spiral shape. Based on the detection signal and the moving speed of the mandrel, the data processing device calculates the winding pitch of the wire and registers the calculated pitch and the data processing device in advance. In comparison with a predetermined pitch, the winding pitch of the spirally wound wire is inspected. Inspection method of winding pitch of ya.   A device for inspecting a winding pitch of a rubber hose wire formed by sequentially winding a component member including a wire wound spirally while moving in one direction with a mandrel as a core, the wire A sensor disposed between a position where the wire is wound in a spiral shape and a position where the next component member is wound outside the wire wound in the spiral shape, and a data processing device connected to the sensor, And a monitor connected to the data processing device, wherein the sensor detects the moving wire wound in the spiral shape and transmits a detection signal, and the data processing device detects the detection signal of the sensor. And calculating the winding pitch of the wire based on the moving speed of the mandrel, and the monitor displays the calculated pitch. Inspection apparatus of the winding pitch of hate.   The said data processing apparatus compares the predetermined pitch and the calculated pitch which were registered previously, The said monitor displays the comparison result, The test | inspection apparatus of the winding pitch of the wire of a rubber hose of Claim 2 .   4. The external transmission device according to claim 3, further comprising an external transmission device that transmits an abnormality based on an instruction signal of the data processing device when a difference between the calculated pitch and the pre-registered pitch is equal to or greater than a predetermined value. Inspection device for winding pitch of rubber hose wire.   The apparatus for inspecting a winding pitch of a wire of a rubber hose according to any one of claims 2 to 4, wherein the sensor is a pressure sensor that contacts a surface of the wire wound in a spiral shape.   The apparatus for inspecting a winding pitch of a wire of a rubber hose according to any one of claims 2 to 4, wherein the sensor is an optical sensor that does not contact the surface of the wire wound in a spiral shape.

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