JP2007224358A - Masking method in surface treatment and scroll parts using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a masking method which does not make an operation or a control in a working step complicated, does not cause a problem that stamping is forgot or that a composition contained in stamp ink affects the lubricant, but can put such a discrimination mark for a type of the surface treatment on an article. <P>SOLUTION: This masking method includes forming a hole 9 at least in one part of a masking holder 7 that is used in a surface treatment process for treating only the surface to be treated of a workpiece by covering the surface of the workpiece, which needs not be surface-treated, with the masking holder 7, and then bringing the surface to be treated of the workpiece in contact with a surface treatment liquid. Thereby, the masking method can put a discrimination mark on the workpiece while surface-treating the workpiece, prevents the discrimination mark from being forgot to be put on the workpiece, can be widely applied to any workpiece to be surface-treated, and eliminates the need for a step of attaching the discrimination mark. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a surface treatment masking method and a scroll component using the same.

  Conventionally, there is a scroll type as one of typical compressors, and its structure and principle are widely known.

  Above all, in a variable speed scroll compressor that drives an electric motor by an inverter system, the material of the orbiting scroll that is one of the drive parts is used for the purpose of reducing the load of the compression mechanism part during high speed operation and the vibration of the compressor itself. Many products using aluminum alloys are known.

  Furthermore, in recent years, scroll compressors using natural refrigerants such as carbon dioxide have been put into practical use. However, since the load is higher than conventional refrigerants such as R410a, swirling is performed for the purpose of improving seizure resistance. Some of the sliding surfaces of the scroll are subjected to surface treatment, and as one of them, a technique for performing an alumite film treatment is disclosed (for example, see Patent Document 1).

  The conventional orbiting scroll is shown in FIG.

  The orbiting scroll 1 has a spiral wrap 3 formed on an end plate 2 and an eccentric shaft support 4 provided on the opposite surface. The spiral wrap 3 meshes with a fixed scroll (not shown) to form a compression chamber, and a bearing member 5 is press-fitted into the eccentric shaft support portion 4, and a crankshaft having an eccentric shaft The driving force from the eccentric shaft (not shown) is transmitted. Further, the end plate 2 is provided with a key groove portion 6, and a key portion (not shown) of the Oldham ring is slidably fitted so that the orbiting scroll 1 performs a revolving motion without rotation. Restrained. With such a main configuration, the refrigerant is compressed.

  The orbiting scroll 1 uses an aluminum alloy as a material for the purpose of reducing the load of the compression mechanism section during the high-speed operation of the compressor and the vibration of the compressor itself, and in order to improve the seizure resistance, An alumite film treatment is performed on the surface. Here, since the bearing member 5 is made of a resin-based material, it is necessary that the surface of the bearing member 5 is not subjected to an alumite film treatment. Therefore, as shown in FIG. 6, during the alumite coating treatment of the orbiting scroll 1, the alumite coating treatment is performed by covering the masking jig 7 so as to cover the outer periphery of the eccentric shaft support portion 4 that does not slide with other components. When the masking jig 7 is removed after the alumite film treatment, a surface that is not treated and a surface that is not treated by the surface treatment boundary line 13 appears.

Here, when performing alumite film treatment with different processing conditions according to the difference between the anodized film processing companies and the specifications of the orbiting scroll 1, the identification mark is required for the orbiting scroll 1. As such a method, for example, a method of providing a small hole 8 for identification on the non-sliding surface of the orbiting scroll before the alumite film treatment can be considered.
JP 2005-16334 A

However, when an identification mark is previously attached to the orbiting scroll before the anodized film treatment as described above, an identification mark must be added to the orbiting scroll for each type of anodized film treatment and prepared separately. There was a problem that the labor and management of processing became complicated.

  In addition, a method of impressing an identification mark with a stamp mark on the non-sliding surface of the orbiting scroll after the alumite film treatment can be considered, but forgetting to imprint or the influence of components contained in the stamp ink on the lubricating oil Is also possible.

  SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and performs a surface treatment on a workpiece part, and at the same time, a method for easily and reliably attaching an identification mark by masking during the surface treatment, and a scroll using the same. The purpose is to provide parts.

  In order to solve the above-described conventional problems, the present invention covers a non-surface-treated portion with a masking jig when forming a non-surface-treated surface on a work part, and has a hole in at least one location of the masking jig. It is provided and the surface treatment liquid is sealed.

  Thereby, since the said hole part is surface-treated by being exposed to a surface treatment liquid among the non-surface-treated surfaces of a workpiece | work part, this becomes an identification mark and can attach an identification mark simultaneously with surface treatment.

  The workpiece part before the surface treatment can be shared, the process of processing the identification mark is not required, and the identification mark can be attached simultaneously with the surface treatment of the workpiece part, so that the identification mark is not forgotten.

  Further, different identification marks can be easily and surely provided for each type of surface treatment only by changing the masking jig.

  1st invention covers the non-surface-treated surface of a workpiece part with a masking jig, and then surface-treats only the to-be-treated surface of a workpiece part by filling the treated surface of the workpiece with a surface treatment liquid. In this masking method, by providing a hole in at least one location of the masking jig and sealing the surface treatment liquid, the non-surface treated portion is masked by the masking jig, and at the same time, the hole portion of the workpiece part is surface treated. Therefore, an identification mark can be attached simultaneously with the surface treatment.

  According to the second invention, in particular, as the masking jig of the first invention, the surface treatment liquid is sealed by providing one or more notches at the opening side end of the masking jig. Similarly to the above, since the notched portion of the work part is surface-treated, an identification mark can be attached simultaneously with the surface treatment.

  According to a third aspect of the present invention, in particular, as a masking jig of the first aspect of the present invention, at least one protrusion is provided on the opening side end of the masking jig toward the surface to be processed of the workpiece, Since the protrusion of the surface is not subjected to surface treatment, an identification mark can be attached simultaneously with the surface treatment.

According to a fourth invention, in any one of the first to third inventions, the work part is made of an aluminum alloy and the surface treatment is anodized, and the surface to be coated is not subjected to the surface treatment. Since the color tone difference of the workpiece parts on the surface clearly appears, the identification mark can be easily identified, and the wear resistance is high, so that the identification mark does not easily disappear.

  A fifth invention is the method according to any one of the first to third inventions, wherein the main material of the masking jig is rubber or resin, and the sealing performance of the non-surface treated surface of the work part can be improved. In addition, depending on the type of surface treatment, a plurality of types of notches can be easily added.

  According to a sixth invention, in any one of the first to fifth inventions, the work part is a scroll part, and an effect similar to that of the first to fifth inventions can be obtained. High scroll parts can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

  Here, as an example of the work part, a description will be given of a turning scroll used in a scroll compressor using carbon dioxide as a working fluid. Moreover, the same number is used about the same structure as the prior art example demonstrated in FIG.5 and FIG.6, and description of the effect | action is abbreviate | omitted.

(Embodiment 1)
FIG. 1 is a perspective view of a orbiting scroll using the surface treatment masking method according to the first embodiment of the present invention, and FIG. 2 is a perspective view of the orbiting scroll to which a masking jig is attached during the surface treatment. is there.

  In FIG. 1, since the bearing member 5 is made of a resin-based material, it is necessary not to perform the alumite film treatment. Therefore, as shown in FIG. 2, the alumite film treatment of the orbiting scroll 1 is performed. Sometimes, the masking jig 7 is covered so as to cover the outer periphery of the eccentric shaft support portion 4 that does not slide with other parts, and an alumite film treatment is performed.

  Here, since one hole 9 is provided on the surface of the masking jig 7 in contact with the outer periphery of the eccentric shaft support 4, the hole 4 of the eccentric shaft support 4 is anodized. Therefore, when the masking jig 7 is removed after the alumite treatment, the identification mark 12 is attached together with the surface treatment boundary line 13 as shown in FIG. Thereby, an identification mark can be attached simultaneously with the surface treatment of the orbiting scroll 1.

(Embodiment 2)
FIG. 3 is a perspective view of the orbiting scroll having a masking jig attached during the surface treatment in the second embodiment of the present invention. Moreover, the same number is used about the same structure as Embodiment 1 demonstrated in FIG. 1 and FIG. 2, and description of the effect | action is abbreviate | omitted.

  In FIG. 3, since one notch 10 is provided at the opening side end in contact with the outer periphery of the eccentric shaft support 4 of the masking jig 7, the notch 10 of the eccentric shaft support 4 is anodized. Is done. Therefore, when the masking jig 7 is removed after the alumite treatment, an identification mark in the shape of the notch is attached. Thereby, an identification mark can be attached simultaneously with the surface treatment of the orbiting scroll 1.

(Embodiment 3)
FIG. 4 is a perspective view of the orbiting scroll to which a masking jig is attached during the surface treatment in the third embodiment of the present invention. Moreover, the same number is used about the same structure as Embodiment 1 demonstrated in FIG. 1 and FIG. 2, and description of the effect | action is abbreviate | omitted.

  In FIG. 4, since one protrusion 11 is provided on the opening side end of the masking jig 7 in contact with the outer periphery of the eccentric shaft support 4 toward the surface to be processed of the eccentric shaft support 4. The surface in contact with the protruding portion 11 of the shaft support portion 4 is not subjected to an alumite film treatment. Therefore, when the masking jig 7 is removed after the alumite treatment, an identification mark having the shape of the protruding portion 11 is attached. Thereby, an identification mark can be attached simultaneously with the surface treatment of the orbiting scroll 1.

  The number or position of the hole 9, the notch 10, or the protrusion 11 of the masking jig 7 according to the embodiment of the present invention is not particularly limited. In the case of performing alumite coating treatment with different processing conditions according to the specifications of 1, the masking jig is changed according to the type of the orbiting scroll 1, or the hole 9, the notch 10 or the protrusion 11 is provided. Various combinations of identification marks can be easily set by combining them.

  Even in the above case, only one type of orbiting scroll is required before the surface treatment, and there is no trouble in processing and management.

  The material of the masking jig 7 according to the embodiment of the present invention is not particularly limited, but the main material is rubber such as urethane rubber or silicon rubber, or PET resin or nylon resin. These resins are suitable for sealing performance. In addition, if these materials are used, the conditions for the surface treatment are different, and even when the identification mark is changed, holes and notches can be easily added to the masking jig.

  Note that the type of surface treatment performed in the embodiment of the present invention is not particularly limited, but other examples include nickel plating.

  As described above, the masking method for surface treatment according to the present invention can be widely applied to components that need to have an identification mark in the surface treatment for covering the non-surface-treated surface with the masking jig.

The perspective view of the turning scroll in Embodiment 1 of this invention The perspective view of the turning scroll which attached the masking jig in Embodiment 1 of this invention The perspective view of the turning scroll which attached the masking jig in Embodiment 2 of this invention The perspective view of the turning scroll which attached the masking jig in Embodiment 3 of this invention A perspective view of a conventional orbiting scroll Perspective view of orbiting scroll with conventional masking jig

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Orbiting scroll 2 End plate 3 Spiral wrap 4 Eccentric shaft support part 5 Bearing member 6 Key groove part 7 Masking jig 8 Small hole 9 Hole part 10 Notch part 11 Protrusion part 12 Identification mark 13 Surface treatment boundary line

Claims (6)

In the masking method of the surface treatment that covers the non-surface treated surface of the workpiece part with a masking jig, and then performs surface treatment only on the treated surface of the workpiece part by filling the treated surface of the workpiece with a surface treatment liquid. A masking method for surface treatment in which a hole is provided in at least one portion of the masking jig to seal the surface treatment liquid. In the masking method of the surface treatment that covers the non-surface treated surface of the workpiece part with a masking jig, and then performs surface treatment only on the treated surface of the workpiece part by filling the treated surface of the workpiece with a surface treatment liquid. A masking method for surface treatment that seals the surface treatment liquid by providing at least one notch at an opening side end of the masking jig. In the masking method of the surface treatment that covers the non-surface treated surface of the workpiece part with a masking jig, and then performs surface treatment only on the treated surface of the workpiece part by filling the treated surface of the workpiece with a surface treatment liquid. A masking method for surface treatment, wherein the surface treatment liquid is sealed by providing at least one projecting portion at the opening side end portion of the masking jig toward the surface to be treated of the workpiece part. 4. The surface treatment masking method according to claim 1, wherein the work part is made of an aluminum alloy, and an alumite film treatment is used as the surface treatment. 4. The masking method for surface treatment according to claim 1, wherein a main material of the masking jig is rubber or resin. A scroll component manufactured using the surface treatment masking method according to claim 1.

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