Inspection device for assembly jigs

Abstract

To provide an inspection device for an assembly jig capable of determining deterioration of assembly accuracy in an assembly jig.SOLUTION: An inspection device 50 comprises a first inspection member 51, a second inspection member 61, and an irradiation device 71. The first inspection member 51 comprises an inspection cylinder part 52 and a first confirmation part 56 having an inner diameter RT at a thread of a female screw of a cap part. The second inspection member 61 comprises a body part 62, a protrusion part 64, a second confirmation part 65 protruding from an outer peripheral surface of the protrusion part 64 and having a seal diameter RS of an O-ring, and an inspection hole 67.SELECTED DRAWING: Figure 5

Claims

1. An assembly jig used when assembling a valve assembly to a nozzle by screwing a male thread formed on the outer circumferential surface of the fastening portion of the valve assembly into a female thread formed on the inner circumferential surface of the nozzle, and an inspection device for an assembly jig used to inspect the assembly jig, which is used to suppress interference between the seal portion, which is located at the tip of the fastening portion rather than the male thread in the axial direction of the fastening portion, and the female thread, The aforementioned assembly jig is, A first jig fixed to the outer circumference of the mouthpiece portion, The first jig is attached to the outer circumference of the first jig and includes a second jig that has a plurality of guide rods that can be inserted into each of the plurality of insertion holes provided in the valve assembly, By moving the valve assembly along the guide rod inserted into the insertion hole, the valve assembly can be moved while the central axis of the fastening portion and the central axis of the female thread are aligned. The inspection device, A first inspection member comprising: an inspection cylinder portion having the outer diameter of the mouthpiece portion and to which the first jig is fixed; and a first confirmation portion protruding from the inner circumferential surface of the inspection cylinder portion toward the central axis of the inspection cylinder portion and having the inner diameter of the threads of the female screw; A second inspection member comprising: a main body portion having an insertion hole into which the guide rod can be inserted; a protruding portion protruding from the main body portion and inserted into the inspection cylinder portion; a second confirmation portion protruding from the outer circumferential surface of the protruding portion and having a sealing diameter at the sealing portion; and an inspection hole provided in the main body portion outside a virtual circle centered on the central axis of the second confirmation portion and projected onto the outer circumferential surface of the second confirmation portion; An inspection device for an assembly jig, comprising: an irradiation device that irradiates light into the inspection hole along the direction in which the protruding portion protrudes from the main body; and a device that provides light to the inspection hole along the direction in which the protruding portion protrudes from the main body.

2. The inspection device for an assembly jig according to claim 1, wherein the inspection holes are a plurality of circular holes.

3. The inspection device for an assembly jig according to claim 1, wherein the main body portion comprises a plurality of elongated holes extending in an arc shape on the outside of the protruding portion.

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