JP2017187115A - Hose material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable early detection of abrasion deterioration of the hose or appropriate replacement timing, of a hose material.SOLUTION: A hose material is for flowing fluid, and includes: an outer peripheral layer HO positioned on a front surface side of the hose material; and an inner peripheral layer HI positioned inside the outer peripheral layer HO, configured to form a pipe conduit E for flowing fluid, and functioning as a mark HIM for detecting, by visual inspection from the outside, that the hose material is worn at a fixed amount.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air hose used to connect to an air drive device and supply air in a production facility equipped with the air drive device in the manufacturing process of various industrial products such as semiconductor products and liquid crystal display products, and various The present invention relates to a hose material for flowing a fluid.

  Conventionally, various characteristics such as heat resistance, wear resistance, flexibility, and visibility are required for an air hose used by being connected to an air-driven device. For example, in production equipment used in semiconductor product and liquid crystal display manufacturing processes, various air-driven devices and air hoses connected to the air-driven devices are used depending on the application. As for the air hose to be used, the surface gradually deteriorates due to the interference with the peripheral members. If the surface is further worn and further used, the air hose will be pierced and air leakage will occur. If the air leakage is significant, the air drive device will not operate normally. As a result, not only the air hose is merely damaged, but also an unexpected trouble occurs in the production facility itself. Furthermore, when troubles such as the above unexpected production facilities occur, it is necessary to stop the production facilities for restoration, and not only the production facilities but also the productivity of industrial products produced using the production facilities is reduced. It will affect the production itself of industrial products, such as lowering.

  Therefore, the air hose used in the moving part of the production equipment in this way is required to have durability such as wear resistance. Therefore, predictive maintenance is important for the deterioration of the air hose in order to prevent sudden equipment stoppage due to the opening of the air hose.

  As an air hose aimed at improving wear resistance and durability, for example, in Patent Document 1, instead of a conventional general single-layer air hose, on the outer periphery of the first rubber layer and the first rubber layer An epichlorohydrin rubber material having weather resistance such as heat resistance / cold resistance and ozone resistance is provided on the first rubber layer which has the second rubber layer disposed and forms an inner peripheral layer forming an air duct. An air hose using a chlorosulfonated polyethylene rubber material having high wear resistance is disclosed for the second rubber layer used as the outer peripheral layer, the inner peripheral layer exhibits weather resistance, and the outer peripheral layer is It is intended to avoid the occurrence of problems associated with contact with external members, while exhibiting high wear resistance and weather resistance of the air hose.

JP-A-10-30763

  In the air hose of this patent document 1, since it has the structure which provided the 2nd rubber | gum layer with abrasion resistance in the outer periphery, it has a certain effect with respect to the improvement of durability certainly. It seems to be obtained. Further, from the viewpoint of predictive maintenance against wear deterioration, in the air hose of Patent Document 1, the first rubber layer serving as the inner peripheral layer is exposed by the wear of the second rubber layer serving as the outer peripheral layer. Then, it can be recognized from the visual state that the air hose has been worn to some extent.

  However, since the air hose of Patent Document 1 is not particularly configured to detect wear, the air hose generates deterioration at the stage when the first rubber layer serving as the inner peripheral layer is exposed. The relationship with the level of deterioration just before the level (that is, the level that needs to be replaced) is unknown. Therefore, even if it is confirmed that the first rubber layer serving as the inner circumferential layer is exposed, it cannot be determined whether or not replacement is necessary. That is, it cannot be recognized as a case where wear has progressed to a level that requires replacement, and an air leakage problem cannot be prevented in advance.

  Also, if the air hose is replaced when it is judged that the wear has progressed due to the deterioration at the stage when the first rubber layer that is the inner circumferential layer is exposed, the occurrence of problems due to air leakage is prevented. I may be able to do it. However, in the air hose disclosed in Patent Document 1, the first general rubber layer itself, which is the inner peripheral layer disposed inside the second rubber layer, is a conventional general layer composed of a single layer of the first rubber layer. The first rubber layer itself (that is, the first rubber immediately after the first rubber layer is exposed) has the same thickness as that of a simple air hose (described as about 80%). In a state where there is no layer wear, the air leakage resistance is sufficient. Therefore, replacing the air hose at this point in time means that an unnecessarily early replacement time is selected. As a result, the life (or replacement cycle) of the substantial air hose is shortened and the operation cost is increased. In other words, in the air hose of Patent Document 1, early detection of wear deterioration of the air hose and prevention of air leakage problems, or accurate detection of replacement time, or depending on the life of the air hose Operation with a reasonable exchange cycle is not possible.

  Moreover, about the subject regarding the generation | occurrence | production of the leak by wear deterioration of the said description, and the replacement | exchange according to a lifetime, it is a subject common to the hose material for flowing various fluids not only to an air hose.

  The present invention solves the above-mentioned problems, enables early detection of wear deterioration of the hose material (or detection of an appropriate replacement time), and there is a problem of leakage of fluid flowing through the hose material. By performing repairs and replacements systematically before they occur, it is possible to operate with an appropriate replacement cycle according to the life of the hose material, to prevent the occurrence of unexpected production equipment troubles, or equipment It aims at providing the hose material which becomes possible to prevent the fall of productivity by the stop of the production equipment accompanying trouble recovery.

  In the hose material of the present invention, a hose material for flowing a fluid, an outer peripheral layer positioned on the surface side of the hose material, and a conduit for flowing the fluid positioned inside the outer peripheral layer are formed. In addition, the hose material is provided with an inner peripheral layer that functions as a mark for visually detecting that the hose material has been worn out by a certain amount.

  Early detection of wear deterioration of the hose material, or accurate detection of the replacement time becomes possible.

It is the schematic which shows the air hose of Embodiment 1 of this invention. It is an expanded sectional view of Embodiment 2 of the present invention and the air hose of the modification. It is an expanded sectional view of Embodiment 3 of the present invention and an air hose of the modification. It is an expanded sectional view of Embodiment 4 of the present invention and an air hose of the modification. It is an expanded sectional view of Embodiment 5 of the present invention and an air hose of the modification. It is an expanded sectional view of an air hose of Embodiment 6 of the present invention and its modification.

Embodiment 1.
The configuration and operation of the air hose of the first embodiment, which is an example of a hose material to which the present invention is applied, will be described with reference to the schematic diagram of FIG. Here, FIG. 1A shows an enlarged cross-sectional view of the air hose, and FIG. 1B shows an operation explanatory diagram. Note that the drawings are schematic and do not reflect the exact size of the components shown. Further, in the figure, the same components as those described in the previous drawings are denoted by the same reference numerals, and the description thereof is omitted. Hereinafter, the same applies to other drawings.

  As shown in FIG. 1A, the air hose according to the first embodiment includes an air hose inner circumferential layer HI provided with a pipe line E serving as a tubular hollow portion through which air flows, and the surface side of the air hose. It is comprised by the air hose outer peripheral layer HO located in. Further, the air hose inner peripheral layer HI is provided on the surface of the air hose outer peripheral layer HO side, and is a mark for detecting a state where the air hose outer peripheral layer HO is worn out by a certain amount, at least the state where the air hose inner peripheral layer HI is exposed. The layer HIM and the base layer HIB forming the pipe E are configured. Therefore, the air hose inner circumferential layer HI has a function as a conduit E through which air flows and a function as a mark (reference) for visually detecting that the air hose is worn by a certain amount. You will have both.

  Here, the material of the air hose inner peripheral layer HI and the material of the air hose outer peripheral layer HO are basically the same material, that is, the material of the base layer HIB that forms the pipe E of the air hose inner peripheral layer HI. And the material of the air hose outer peripheral layer HO are made of the same material or the material having the same hardness characteristics, and depending on the environment, temperature, etc. to be exposed, such as a rubber material used for a general known air hose. Therefore, it is preferable to select an appropriate material. Further, the specific configuration of the mark layer HIM will be described separately along with the operation description below.

  In addition, as one usage pattern of the air hose of the first embodiment, the air hose is connected to an air driving device (not shown), and air is supplied to the air driving device by flowing air through the pipeline E. Or it is set as the structure which operates an air drive apparatus by discharging | emitting the air which passed the said air drive apparatus. In addition, the production facility is configured to include the air drive device, and the air hose of the first embodiment is configured to be disposed on the movable part in the production facility.

  Next, the detailed configuration and operation of the air hose according to the first embodiment will be described with reference to FIG. FIG. 1B shows an example of a state in which the air hose of the first embodiment is used in a movable part in a production facility as described above, and the surface wear deterioration has progressed to some extent. .

  As shown in FIG. 1B, in the state where the surface wear deterioration has progressed, the wear progresses from the air hose outer peripheral layer HO, and the air hose outer peripheral layer HO is scraped off at least at a part of the air hose outer peripheral layer HO. As a result, the opening OP is formed. In the opening OP, the air hose inner peripheral layer HI is exposed, and in particular, the mark layer HIM provided on the surface of the air hose inner peripheral layer HI is exposed. As an example, the mark layer HIM is configured by a pattern pattern in which an arrow-shaped pattern is repeatedly arranged as one of symbols as illustrated. Further, the pattern pattern itself may be constituted by a film material on which the pattern pattern is printed, or may be provided by directly printing on the surface of the air hose inner peripheral layer HI with an ink material or the like.

  As shown in FIG. 1B, when the opening OP is formed in the air hose outer peripheral layer HO due to the progress of surface wear deterioration, the mark layer HIM is exposed from the opening OP. When this state is visually observed, as described above, the mark layer HIM may be recognized as a mark provided with the intention of showing some situation, not simply the color difference of the material itself. It becomes possible.

  Furthermore, in order to indicate that the mark is a mark indicating that the air hose is worn out by a certain amount, specifically, indicating that the replacement time is near or has already been replaced. This mark is used to visually detect that the air hose has been worn out by a certain amount of information by making it known to workers who perform visual inspections. ). Furthermore, in the air hose, at least a part of the mark layer HIM is confirmed to be exposed, and at least before the air hose is further deteriorated and reaches the hollow portion of the pipe E, the air hose is replaced. By doing so, it is possible to prevent air leakage problems.

  Further, as a more specific operation, for example, when a regular visual inspection of the air hose and a state where the mark layer HIM is exposed are confirmed, within a predetermined time or as quickly as possible It is possible to detect air hose wear deterioration relatively easily or early by performing operations with rules such as replacing the air hose, and replace them appropriately after the wear deterioration is detected. It is possible to prevent air leakage problems by performing the above.

  Furthermore, the thickness of the air hose inner peripheral layer HI is set to a thickness that does not cause air leakage immediately at least when the mark layer HIM of the air hose inner peripheral layer HI is exposed. Further preferably, from the time when the mark layer HIM is actually exposed until the operator visually recognizes the exposed state, that is, until it is detected that the air hose has reached the replacement time. In consideration of the time margin and the time margin until the operator can actually perform the replacement work after recognizing the exposed state, etc., at least the air leakage until the replacement work can be started. Set to a level that does not occur. For example, the thickness of the air hose inner circumferential layer HI should be at least about 5% of the life of the air hose having the above-described configuration until the air leakage occurs. It becomes.

  On the other hand, even if the mark layer HIM is exposed and replaced immediately, it is set so that the replacement is not unnecessarily fast. For example, the air hose having such a configuration may be set to at least less than 50% with respect to the life until the air leakage occurs. Furthermore, it is desirable that the air hose inner circumferential layer HI has a thickness that can ensure a life of about 20% or less by itself, which is a relative thickness setting for the air hose inner circumferential layer HI and the air hose outer circumferential layer HO. It becomes a standard.

  As an example of the specific thickness of the air hose inner peripheral layer HI and the air hose outer peripheral layer HO, the life of the air hose inner peripheral layer HI alone is about 20% of the life of the entire air hose as a guideline of the above setting. If it is set to, it should be set as follows. In Embodiment 1, since the air hose inner circumferential layer HI, in particular, the base layer HIB and the air hose outer circumferential layer HO are made of the same material or a material having the same hardness characteristic, It can be estimated to some extent as being proportional to. That is, when converted based on the assumption that the life is simply proportional to the thickness, for example, the air hose inner circumferential layer HI and the air hose outer circumferential layer HO correspond to the life of 20% of the air hose inner circumferential layer HI alone. The thickness ratio may be set to about 1: 4. In addition, if the life of the air hose inner circumferential layer HI alone is set to less than 50% of the entire air hose life, the thickness of the air hose inner circumferential layer HI is simply smaller than the thickness of the air hose outer circumferential layer HO. You can set it.

  That is, in particular, the base layer HIB and the air hose outer peripheral layer HO of the air hose inner peripheral layer HI are made of the same material or the material having the same hardness characteristic, so that the time when the air hose inner peripheral layer HI is exposed is appropriate. It can be set relatively easily so as to be a guide for the replacement time.

  As described above, if the thickness of the air hose inner peripheral layer HI and the air hose outer peripheral layer HO are set appropriately, the time when the mark layer HIM is exposed as described above is replaced. By performing operations such as checking and replacing the air hose as a guideline for the time, it is possible to detect wear deterioration of the air hose relatively easily or at an early stage, and prevent air leakage problems in advance. In addition to the effects described above, it is possible to obtain the effect of being able to detect the exact replacement time of the air hose and the effect of being able to operate with an appropriate replacement cycle according to the life of the air hose.

  Furthermore, in the air drive device to which the air hose of the first embodiment is connected and the production equipment configured to include the air drive device, the air hose is disposed in the movable part of the production equipment and the wear deterioration progresses. Even if the situation is relatively fast, as described above, it is possible to detect the air hose wear deterioration early and prevent air leakage problems, resulting in unexpected production. It is possible to prevent the occurrence of a trouble in the apparatus or to prevent a decrease in productivity of an industrial product produced using the production facility due to the stop of the production facility accompanying the restoration of the apparatus trouble.

  The mark layer HIM functioning as a mark for indicating the replacement time of the air hose used in the air hose according to the first embodiment described above is constituted by a pattern pattern in which an arrow-shaped pattern is repeatedly arranged. The above example has been explained, but the difference in the color of the material itself was not seen, it was an artificial one, and it was obvious that it was provided as a mark when visually recognized. As long as it functions easily. For example, repetitive patterns such as symbols and characters other than arrows, pattern patterns such as stripes, meshes, and wavy lines, specific colors (so-called artificial colors that are not colors of general materials themselves, such as primary colors) A color with high visibility such as a highly saturated color or a fluorescent color, or a colored layer of red or yellow, which is widely used as a color indicating danger, can be used.

  Further, the mark layer HIM functioning as a mark for indicating the replacement time exemplified as described above, in any form, the operator or the like is actually exposed from the time when the mark layer HIM is actually exposed. In consideration of the time margin for recognizing the detected state, for example, the frequency of inspection (interval of inspection), etc., the mark layer HIM itself becomes invisible due to wear at least within the time or inspection interval. It is desirable to have wear resistance such as a certain thickness and hardness so as to function as a mark.

Embodiment 2.
Subsequently, from the air hose according to the first embodiment described above, the air hose inner peripheral layer provided with a mark layer functioning as a mark for indicating the replacement time is partly changed. The air hose according to the second embodiment to which the invention is applied and the air hose according to the second embodiment modified in part will be described with reference to FIG. Hereinafter, the changed part from the first embodiment will be described mainly.

  First, the structure of the air hose according to the second embodiment will be described with reference to FIG. 2A is an enlarged cross-sectional view of the air hose according to the second embodiment, and FIG. 2B is an enlarged cross-sectional view of the air hose according to the second embodiment.

  First, as shown in FIG. 2 (a), the air hose of the second embodiment is an air hose inner peripheral layer provided with a mark layer on the surface that functions as a mark for indicating the replacement time in the first embodiment. Instead, the air hose inner circumferential layer HIC is composed of a colored layer that is entirely colored from the surface to the pipe E so as to function as a mark for indicating the replacement time.

  Note that the color of the air hose inner circumferential layer HIC is colored in a specific color (artificial color such as a primary color, for example, as in the case of use in the mark layer HIM of the first embodiment). Highly visible colors such as colors and fluorescent colors, or red and yellow, which are commonly used as danger colors, are desirable, and the air hose inner peripheral layer HIC is exposed at least by visual inspection. In order to be able to recognize that it has been done, it is necessary to color at least a color different from that of the air hose outer peripheral layer HO.

  Moreover, it can recognize that the air hose inner peripheral layer HIC was exposed by coloring the air hose inner peripheral layer HIC at least in a color different from the air hose outer peripheral layer HO. Therefore, the air hose outer peripheral layer HO does not need to be a colored layer in particular, and may remain the color of the material itself. However, in order to improve the visibility when the air hose inner peripheral layer HIC is exposed, the air hose outer peripheral layer HO is also appropriately colored, and the air hose inner peripheral layer HIC and the air hose outer peripheral layer HO are different from each other. A colored layer colored in color may be used. In that case, for example, the color of the air hose inner peripheral layer HIC and the color when the air hose outer peripheral layer HO is used as a colored layer are contrasted in terms of hue so that the difference is clear. It is preferable to appropriately set the color of each colored layer, for example, to select a color with extremely different brightness.

  Moreover, the air hose inner peripheral layer HIC and the air hose outer peripheral layer HO are basically made of the same material or a material having the same hardness characteristics except that they are colored. Specifically, the same base material (raw material) was used, and only the presence or absence of a colorant mixed for coloring was changed.

  Further, regarding the thickness of the air hose inner circumferential layer HIC, in the same way as the thickness of the air hose inner circumferential layer HI in the first embodiment, the air hose has a thickness of 5% or more and 50% with respect to the life until air leakage occurs. The thickness of the air hose inner circumferential layer HIC that can ensure a life of less than about is a measure for setting the relative thickness of the air hose inner circumferential layer HIC and the air hose outer circumferential layer HO. Therefore, as a specific example of the thickness of the air hose inner circumferential layer HIC and the air hose outer circumferential layer HO, for example, the thickness of the air hose inner circumferential layer HIC is smaller than the thickness of the air hose outer circumferential layer HO, more preferably What is necessary is just to set the thickness ratio of the hose inner peripheral layer HIC and the air hose outer peripheral layer HO to about 1: 4.

  In the air hose according to the second embodiment described above, as with the air hose according to the first embodiment, the air functioning as a mark for visually detecting a state in which the air hose has worn a certain amount. The hose inner peripheral layer HIC is provided, and when the deterioration of the surface of the air hose having this configuration progresses, the mark layer HIC is exposed from at least a part of the air hose outer peripheral layer HO. Furthermore, in order to indicate that the mark is a mark indicating that the air hose is worn out by a certain amount, specifically, indicating that the replacement time is near or has already been replaced. By making known to the operator who visually inspects the mark, it is possible to detect the wear deterioration of the air hose relatively easily or early by visually checking this state. Furthermore, it is possible to prevent an air leakage problem by performing appropriate replacement after the wear deterioration is detected. As a result, it is possible to prevent the occurrence of an unexpected trouble in the production apparatus or to prevent the productivity from being lowered due to the stop of the production facility due to the apparatus trouble recovery. In addition, an appropriate replacement cycle corresponding to the life of the air hose can be performed by checking and replacing the air hose with the time when the air hose inner circumferential layer HIC is exposed as a guideline for replacement. The effect which can be operated with can be obtained.

  In the air hose of the second embodiment, the air hose inner peripheral layer HIC functioning as a mark for indicating the replacement time of the air hose is composed of a colored layer that is colored as a whole as well as the surface. Since the air hose is employed, the air hose inner peripheral layer HIC is continuously used as a mark from the time when the wear deterioration further progresses until it reaches the hollow portion of the pipe E. Accordingly, when the period from when the air hose inner circumferential layer HIC is actually exposed until the operator visually recognizes the exposed state is relatively long, that is, the frequency of inspection is low. Even when the inspection interval is long, the mark functions without any problem, and the above-described effects can be obtained.

  Subsequently, an air hose according to a modification of the second embodiment will be described with reference to FIG. In the air hose of the second embodiment, as shown in FIG. 2 (b), the air is composed of a colored layer that is entirely colored and functions as a mark for indicating the replacement time in the second embodiment. The hose inner peripheral layer is an air hose inner peripheral layer HIC1 and an air hose inner peripheral layer HIC2 made of a plurality of colored layers colored in different colors.

  In addition, as the color used when the air hose inner circumferential layer HIC1 and the air hose inner circumferential layer HIC2 are used for the air hose inner circumferential layer HIC of the second embodiment, a specific color (artificial Colors such as primary colors and other highly saturated colors such as high-saturation colors and fluorescent colors, or red and yellow commonly used as colors indicating danger) In order to recognize that the air hose inner peripheral layer HIC1 or the air hose inner peripheral layer HIC2 is exposed at least visually, at least from among the colors different from the air hose outer peripheral layer HO. Each is preferably colored with the selected color. Colors for coloring the air hose inner peripheral layer HIC1 and the air hose inner peripheral layer HIC2 may be appropriately selected so as to satisfy the above conditions.

  However, here, regarding the air hose inner peripheral layer HIC1 and the air hose inner peripheral layer HIC2, the state where each is exposed from at least a part of the air hose outer peripheral layer HO is detected as different wear deterioration states of the air hose. Is intended. More specifically, regarding the air hose wear deterioration, for example, the air hose inner peripheral layer HIC2 is exposed as a guide indicating that the replacement time is near in the state where the air hose inner peripheral layer HIC1 is exposed. The status is set as a guideline indicating that it is necessary to immediately replace at the time of replacement. Therefore, for example, depending on the degree of danger, the air hose inner circumferential layer HIC2 uses red, which is widely used as a color representing a higher degree of danger, than the commonly used red and yellow as colors representing the danger. For the circumferential layer HIC1, yellow, which is widely used as a color representing a lower risk level than red, was used.

  Further, the air hose inner peripheral layer HIC1, the air hose inner peripheral layer HIC2, and the air hose outer peripheral layer HO are basically made of the same material or a material having the same hardness characteristics except that they are colored. Specifically, the same base material (raw material) was used, and only the presence / absence and color type of the colorant mixed for coloring were changed.

  As a specific example of operation, for example, when the air hose inner circumferential layer HIC1 or the air hose inner circumferential layer HIC2 is confirmed to be exposed, a periodic visual inspection of the air hose is taken as an indication of the replacement time. After confirming that the air hose inner circumferential layer HIC1 is exposed, prepare for the air hose to be replaced and select the scheduled replacement date according to the maintenance plan for the production facility. When it is confirmed that the air hose inner circumferential layer HIC2 is exposed, it is preferable to perform an operation with rules such as replacing the air hose within a predetermined time or as soon as possible. .

  Moreover, regarding the thickness of the air hose inner circumferential layer HIC1 and the air hose inner circumferential layer HIC2, in this modification, as described above, the meaning of the state in which the air hose inner circumferential layer HIC2 is exposed is the same as that of the second embodiment. Since the air hose inner peripheral layer HIC is close to the meaning of the exposed state, for example, the thickness of the air hose inner peripheral layer HIC2 is smaller than the sum of the thickness of the air hose outer peripheral layer HO and the thickness of the air hose inner peripheral layer HIC1, Preferably, the thickness ratio of the sum of the thickness of the air hose inner peripheral layer HIC2 and the thickness of the air hose outer peripheral layer HO and the air hose inner peripheral layer HIC1 may be set to about 1: 4. Moreover, if the thickness of the air hose inner peripheral layer HIC1 and the air hose inner peripheral layer HIC2 is set to be equal, the thickness ratio of the air hose inner peripheral layer HIC1, the air hose inner peripheral layer HIC2, and the air hose outer peripheral layer HO May be set to about 1 to 1 to 3.

  As with the air hose of the second embodiment, the air hose of the second embodiment described above has the effect of preventing air leakage problems and the occurrence of unexpected troubles in the production apparatus. The effect that it is possible to prevent the decrease in productivity due to the stoppage of production equipment due to the recovery of equipment troubles, the effect of detecting the exact replacement time of the air hose, and the life of the air hose As a result, it is possible to check the progress of wear deterioration more finely, especially in the air hose of this modification. It becomes possible to manage the replacement time and replacement cycle of the appropriate air hose according to the progress.

Embodiment 3.
Subsequently, the application of the present invention in which the air hose according to the second embodiment described above is changed, in particular, with respect to the inner layer of the air hose that functions as a mark for indicating the replacement time of the air hose. The air hose of the third embodiment and the air hose of the third embodiment modified with some changes will be described with reference to FIG. Hereinafter, the change part with Embodiment 2 will be described mainly.

  First, the structure of the air hose of this Embodiment 3 is demonstrated using FIG. Here, FIG. 3A is an enlarged cross-sectional view of the air hose of the third embodiment, and FIG. 3B is an enlarged cross-sectional view of an air hose of a modification of the third embodiment.

  First, as shown in FIG. 3 (a), the air hose according to the third embodiment is more than a colored layer that functions as a mark for indicating the replacement time of the air hose according to the second embodiment. Instead of the air hose inner peripheral layer, an air hose inner peripheral layer HIF containing a phosphor that emits light when irradiated with black light.

  Further, the air hose outer peripheral layer located on the surface side of the air hose is an air hose outer peripheral layer HOS made of a light-impervious material, that is, a light shielding material, in the third embodiment. For example, the air hose inner peripheral layer HIF is exposed only when the air hose inner peripheral layer HIF is exposed from the air hose outer peripheral layer HOS, so that the air hose inner peripheral layer HIF is exposed. If the air hose inner peripheral layer HIF is not exposed from the air hose outer peripheral layer HOS, the air hose inner peripheral layer HIF emits light and cannot be seen even when irradiated with black light. It is desirable that the degree.

  In the air hose of the third embodiment described above, like the air hose of the second embodiment, the air that functions as a mark for visually detecting a state in which the air hose has worn a certain amount from the outside. The hose inner peripheral layer HIF is provided, and furthermore, the air hose inner peripheral layer HIF contains a phosphor that emits light by irradiating black light, so that the surface of the air hose having this structure is worn and deteriorated. When proceeding, the air hose inner peripheral layer HIF is exposed from at least a part of the air hose outer peripheral layer HOS, and when the air hose is inspected, the black hose is irradiated so that the worn portion of the air hose outer peripheral layer HOS Whether the exposed portion of the air hose inner circumferential layer HIF emits light and whether or not the air hose inner circumferential layer HIF is exposed by the light emission It becomes possible to easily visually confirm. Further, similarly to the air hose of the second embodiment, an effect of preventing an air leakage problem or an effect of being able to operate with an appropriate replacement cycle according to the life of the air hose can be obtained.

  Further, in the air hose of the third embodiment, when the wear reaches the air hose inner circumferential layer HIF and further wear progresses, the material constituting the air hose inner circumferential layer HIF, particularly the air hose inner circumferential layer HIF, The contained phosphor is shaved to generate dust and scatter around. Further, when the dust containing the phosphor contained in the air hose inner circumferential layer HIF is scattered around the periphery, the scattered dust is emitted by irradiating the black light at the time of inspection. Therefore, for example, even when the wear part cannot be visually confirmed directly, it is possible to detect that any of the air hoses arranged near the light emitting part is worn. Whether or not it is in an exposed state can be further visually confirmed.

  Moreover, in the air hose of Embodiment 3 described above, when the portion where the air hose inner circumferential layer HIF is exposed is directly visually inspected, the state before the exposure of the air hose inner circumferential layer HIF is The case where the air hose outer peripheral layer HOS made of a light shielding material is used has been described with the intention of clearly distinguishing it. However, as described above, the air hose outer peripheral layer HOS does not necessarily need to be a light-shielding material if it is mainly confirmed that the phosphor contained in the air hose inner peripheral layer HIF is scattered.

  In addition, the air hose outer peripheral layer HOS is made light transmissive so that light emission of the air hose inner peripheral layer HIF can be confirmed to some extent before the air hose inner peripheral layer HIF is completely exposed from the air hose outer peripheral layer HOS. On the contrary, the state in which the light emission of the air hose inner circumferential layer HIF is confirmed before the exposure can be used for detection. That is, for example, the air hose outer peripheral layer HOS may be made of a semitransparent material that can slightly confirm the light emission of the air hose inner peripheral layer HIF in a state where the air hose outer peripheral layer HOS is extremely thin. In that case, the air hose inner circumferential layer HIF is exposed as the degree of wear depending on the degree to which the light emission of the air hose inner circumferential layer HIF is confirmed (the degree of brightness of the visible light emission). It is also possible to foresee that things are close, that is, the exchange time is near. Therefore, as in the case of the air hose according to the second embodiment, it is possible to check the progress of wear deterioration more finely.

  In the air hose of the third embodiment described above, the air hose inner circumferential layer contains a phosphor that functions as a mark for indicating the replacement time of the air hose and emits light by irradiating black light. Regarding the HIF, the configuration in which the phosphor is entirely contained up to the portion forming the pipe line E of the air hose inner circumferential layer HIF has been described, but only the surface of the air hose inner circumferential layer of the first embodiment is marked As in the case where a layer is provided, a phosphor that emits light by irradiating only the surface of the air hose inner peripheral layer HIF of Embodiment 3 with black light may be included to function as a mark layer.

  As a specific configuration of the air hose of the modified example of the third embodiment in which the above change is made, for example, as shown in FIG. 3B, an air hose outer peripheral layer HOS located on the surface side of the air hose, It consists of an air hose inner circumferential layer HIF2 provided with a duct E that becomes a tubular hollow part through which air flows. Especially, the air hose inner circumferential layer HIF2 emits light by irradiating black light in the same manner as in the third embodiment. In this air hose inner peripheral layer HIF2, black is used as a mark layer for detecting the state in which the air hose inner peripheral layer HIF2 is exposed on the surface of the air hose outer peripheral layer HO. A mark layer HIMF containing a phosphor that emits light when irradiated with light is provided, and further, a base layer HIB for forming a pipe E is provided inside the mark layer HIMF. Constructed.

  The air hose of the third embodiment described above also includes the air hose inner circumferential layer HIF2 that functions as a mark for visually detecting a state in which the air hose has been worn out from the outside. Since the air hose inner peripheral layer HIF2 contains a phosphor that emits light when irradiated with black light, the same effect as the air hose of the third embodiment can be obtained.

Embodiment 4.
Subsequently, in part from the air hose of the first embodiment described above, in particular, the air hose inner circumferential layer provided with a mark layer on the surface that functions as a mark for indicating the replacement time of the air hose. The air hose according to the fourth embodiment to which the present invention is applied and the air hose according to the fourth embodiment modified in part will be described with reference to FIG. Hereinafter, the changed part from the first embodiment will be described mainly.

  First, the structure of the air hose according to the fourth embodiment will be described with reference to FIG. 4A is an enlarged cross-sectional view of the air hose of the fourth embodiment, and FIG. 4B is an enlarged cross-sectional view of the air hose of the fourth embodiment.

  First, as shown in FIG. 4A, the air hose of the fourth embodiment is a mark layer provided on the surface of the air hose inner circumferential layer that functions as a mark for indicating the replacement time of the air hose. In particular, the air hose inner peripheral layer HIR1 having the mark layer HIMR1 functioning as the mark on the surface by having the uneven shape R1.

  In addition, as a specific uneven shape R1 of the mark layer HIMR1, for example, as shown in the figure, as a cross-sectional shape, a triangular convex portion that narrows outward and an inverted triangular shape that widens outward. It was set as the shape by which the recessed part was arrange | positioned alternately. Moreover, in the recessed part located between convex parts, a clearance gap is provided between the air hose outer peripheral layers HO, and conversely, in the convex part, the convex part integrated with the same material as the base layer HIB forming the pipe line E. Will be formed.

  Other materials such as the air hose inner peripheral layer HIR1 and the air hose outer peripheral layer HO, and their characteristics such as thickness setting may be set in the same manner as the air hose of the first embodiment, and detailed description is omitted here. To do.

  In the air hose of the fourth embodiment described above as well as the air hose of the first embodiment, when the surface wear deterioration progresses, an opening is formed in the air hose outer peripheral layer HO, and the mark layer HIMR1 is Exposed. When this state is observed, the surface of the air hose inner circumferential layer HIR1, that is, the concave / convex shape R1 provided on the surface of the mark layer HIMR1 is exposed and visually recognized. In the air hose outer peripheral layer HO, the concavo-convex shape R1 having a clearly different surface state is visually recognized in the exposed portion. Therefore, it is possible to easily visually check whether or not the mark layer HIMR1 is exposed. Further, the mark layer HIMR1 can be recognized as an intentionally provided mark. In other words, the air hose inner circumferential layer HIR1 functions as a mark for visually detecting a state in which the air hose is worn by a certain amount by having the uneven shape R1 on the surface.

  Therefore, as in the case of the first embodiment, the mark layer HIMR1 is a mark for indicating that the air hose has been worn out by a certain amount with respect to the state in which the uneven shape R1 is exposed. Specifically, the operator who makes a visual inspection knows that the replacement time is near or is already a replacement time, and the same operation as in the first embodiment is performed as appropriate. By setting rules, wear deterioration of the air hose can be detected relatively easily or early, and air leakage problems can be prevented by performing appropriate replacement after the wear deterioration is detected. It becomes possible.

  Also, in the air hose of the fourth embodiment, if the thicknesses of the air hose inner peripheral layer HIR1 and the air hose outer peripheral layer HO are set appropriately, in addition to the effects described above, the accuracy of the air hose can be improved. The effect that it is possible to detect a proper replacement time, and the effect that it can be operated with an appropriate replacement cycle according to the life of the air hose can be obtained.

  Further, in the air hose of the fourth embodiment, regarding the concavo-convex shape R1 provided on the surface of the mark layer HIMR1, as a cross-sectional shape, a triangular convex portion that narrows toward the outside, and widens toward the outside. The width of the concavo-convex shape R <b> 1 changes in the thickness direction, such as a shape in which inverted triangular concave portions are alternately arranged. Therefore, the width of the concavo-convex shape R1 exposed from the opening of the air hose outer peripheral layer HO changes depending on the degree of wear of the mark layer HIMR1, and for example, the change in the width of the concavo-convex shape R1 and the mark layer HIMR1 By knowing the relationship of the degree of wear of the mark layer, it can be used as a measure of the degree of abrasion of the mark layer HIMR1. That is, as with the air hose of the second embodiment described above, it is possible to check the progress of wear deterioration in more detail, and an appropriate air hose corresponding to the progress of each wear deterioration. It is possible to manage the replacement time and the replacement cycle.

  In addition, the uneven shape R1 used for the mark layer HIMR1 described as the fourth embodiment is an example, and the uneven shape exposed from the air hose outer peripheral layer HO due to the progress of wear deterioration is visually recognized. Since it functions as a mark for indicating the replacement time of the air hose, other uneven shapes may be used. For example, as shown in FIG. 4B, in place of the air hose inner circumferential layer of the fourth embodiment, a mark layer HIMR2 provided with an uneven shape R2 having a groove-like pattern extending in a direction perpendicular to the cross section is provided. It is good also as the air hose inner peripheral layer HIR2 arrange | positioned on the surface. Even in such a configuration, when the surface wear deterioration progresses, an opening is formed in the air hose outer peripheral layer HO, and the mark layer HIMR2 disposed on the surface of the air hose inner peripheral layer HIR2 is exposed, a flat surface shape is formed. In the air hose outer peripheral layer HO, in the exposed portion, a groove-like uneven shape R2 having a clearly different surface state is visually recognized. Therefore, it is possible to easily visually check whether or not the mark layer HIMR2 is exposed. Further, the mark layer HIMR2 can be recognized as a mark.

  Accordingly, by appropriately setting the same operation rule as in the fourth embodiment, it is possible to detect the wear deterioration of the air hose relatively easily or at an early stage, and appropriate replacement after the wear deterioration is detected. By performing the above, it becomes possible to prevent air leakage problems. In addition, it is possible to prevent the occurrence of unexpected production equipment troubles, or to prevent the decline in productivity due to the stoppage of production equipment due to equipment trouble recovery, the exact replacement time of the air hose The effect similar to the effect obtained in the first embodiment can be obtained, such as the effect that can be detected, and the effect that it can be operated with an appropriate replacement cycle corresponding to the life of the air hose.

  Further, the concavo-convex shape is not limited to the groove-like pattern extending in the vertical direction with respect to the above-described cross section, and, for example, an arrow shape like a pattern exemplified as a specific example of the mark layer HIM of the first embodiment. Shapes that are easy to function as marks, such as pattern patterns that are repeatedly arranged, repeated patterns such as symbols and characters other than arrows, and pattern patterns such as stripes, meshes, and wavy lines It is good to select suitably.

Embodiment 5.
In the air hose of the fourth embodiment described above, in particular, for the air hose inner peripheral layer HIR1 that functions as a mark for indicating the replacement time of the air hose, the mark layer HIMR1 having an uneven shape on the surface is provided. The configuration that functions as a mark by providing the above was described. This is because the air hose outer peripheral layer HO arranged outside the mark layer HIMR1 is a uniform material and basically has a flat surface shape even when it is worn out. When the mark layer HIMR1 is exposed, the exposed portion has a distinctly different surface state and functions as a mark due to its contrast effect. Therefore, conversely, if a material having an uneven shape is arranged on the outside and a uniform material is arranged on the inside to form an inner layer of the air hose, the air arranged on the inside due to the contrast effect due to the same different surface condition. The hose inner peripheral layer can function as a mark.

  Therefore, in the following, the air hose according to the fifth embodiment, which has a configuration in which the air hose outer peripheral layer arranged outside the air hose inner peripheral layer made of a uniform material is provided with a concavo-convex shape, and further partly changed An air hose according to a modified example of the fifth embodiment will be described with reference to FIG. Hereinafter, the changing part from the fourth embodiment will be described mainly.

  First, as shown in FIG. 5A, the air hose according to the fifth embodiment is provided with a pipe E that becomes a tubular hollow portion through which air flows, and is uniform from the surface to the pipe E. An air hose inner peripheral layer HI made of a material and an air hose outer peripheral layer HOR1 located on the surface side of the air hose are configured. In addition, the air hose outer peripheral layer HOR1 disposed outside the air hose inner peripheral layer HI has an uneven shape R1.

  In addition, as a concrete shape of the uneven shape R1 included in the air hose outer peripheral layer HOR1, as an example, as shown in the cross-sectional shape as shown in FIG. As a shape, triangular convex portions that narrow toward the outside and inverted triangular concave portions that widen toward the outside are alternately arranged. Further, in the concave portion located between the convex portions, it is provided to open toward the outer periphery of the air hose, and conversely, in the convex portion, it is integrated with the same material as the air hose inner peripheral layer HI forming the pipe line E. The convex portion thus formed is formed.

  In addition, regarding the thickness setting of the air hose inner circumferential layer HI and the air hose outer circumferential layer HOR1, the material constituting the air hose inner circumferential layer HI is formed by the material constituting the air hose outer circumferential layer HOR1 having an uneven shape R1. In contrast, when the wear deterioration progresses much faster, the thickness of the air hose outer peripheral layer HOR1 may be set relatively thick compared to the air hose of the fourth embodiment. Conversely, when there is no significant difference in the progress of wear deterioration, it may be set similarly to the air hose in the fourth embodiment.

  In the air hose according to the fifth embodiment, the air hose inner circumference HI1 having an uneven shape R1 on the outer side thereof is arranged on the outer side of the air hose inner circumference layer HI made of a uniform material. The layer HI is provided with a function as a mark for visually detecting a state in which the air hose is worn by a certain amount. Therefore, as in the air hose of the first or fourth embodiment, when the surface wear deterioration progresses, the air hose outer peripheral layer HOR1 is scraped from the surface side, and the air hose outer periphery partially having the uneven shape R1 When the layer HOR1 disappears and the air hose inner peripheral layer HI is exposed, the exposed portion has a flat shape that is clearly different in surface state, and the air hose inner peripheral layer HI is exposed due to the contrast effect. It is possible to easily visually check whether or not it is in the state. That is, the exposed state of the air hose inner circumferential layer HI can be recognized as a mark. In other words, the air hose inner circumferential layer HI is for visually detecting the state in which the air hose is worn by a certain amount by arranging the air hose outer circumferential layer HOR1 having the uneven shape R1 on the outer side thereof. Functions as a mark.

  Therefore, as in the case of the fourth embodiment, the air hose is in a state where the air hose is worn out by a certain amount with respect to the state in which the air hose inner peripheral layer HI is exposed from the air hose outer peripheral layer HOR1 having the uneven shape R1. Specifically, it is well-known to the operator who visually inspects that the mark is a mark for indicating that the replacement time is near or that it is already the replacement time. By appropriately setting the same operation rules as in the fourth embodiment, it is possible to detect the wear deterioration of the air hose relatively easily or early, and perform appropriate replacement after the wear deterioration is detected. By doing so, it is possible to prevent air leakage problems. As a result, it is possible to prevent the occurrence of an unexpected trouble in the production apparatus or to prevent the productivity from being lowered due to the stop of the production facility due to the apparatus trouble recovery.

  In addition, in the air hose of the fifth embodiment, if the thickness of the air hose inner peripheral layer HI and the air hose outer peripheral layer HOR1 are set appropriately, in addition to the effects described above, the accuracy of the air hose can be improved. The effect that it is possible to detect a proper replacement time, and the effect that it can be operated with an appropriate replacement cycle according to the life of the air hose can be obtained.

  Also, in the air hose of the fifth embodiment, as in the uneven shape R1 provided on the surface of the mark layer HIMR1 in the air hose of the fourth embodiment, the cross-sectional shape is a triangular shape that narrows toward the outside. The width and the like of the concavo-convex shape R1 are changed in the thickness direction, such as a shape in which convex portions and inverted triangular concave portions that widen outward are alternately arranged. Therefore, the width of the uneven shape R1 exposed from the surface of the air hose outer peripheral layer HOR1 changes depending on the degree of wear of the air hose outer peripheral layer HOR1, for example, the change in the width of the uneven shape R1 and the outer periphery of the air hose. By knowing the relationship of the degree of wear of the layer HOR1, it can be used as a measure of the degree of abrasion of the air hose outer peripheral layer HOR1. In other words, as with the air hose of the fourth embodiment described above, it is possible to check the progress of wear deterioration more finely, and replace the appropriate air hose according to the progress of wear deterioration. It is possible to manage the timing and exchange cycle.

  The uneven shape R1 used for the air hose outer peripheral layer HOR1 described as the fifth embodiment is an example, and the air hose is visually recognized by the uneven shape exposed from the air hose outer peripheral layer HOR1 as wear deterioration progresses. Any other irregular shape may be used as long as it functions as a mark for indicating the replacement time. For example, as shown in FIG. 5 (b), an air hose outer peripheral layer HOR2 provided with an uneven shape R2 of a groove pattern extending in a direction perpendicular to the cross section may be used instead of the air hose outer peripheral layer HOR1. Even with such a configuration, when the surface wear deterioration progresses, the groove-like uneven shape R2 portion of the air hose outer peripheral layer HOR2 is scraped, and the air hose inner peripheral layer HI is exposed, the groove-like uneven shape R2 is obtained. In the air hose outer peripheral layer HO, a flat surface shape having a clearly different surface state is visually recognized in the exposed portion. Accordingly, it is possible to easily visually check whether or not the air hose inner peripheral layer HI is exposed, and it is possible to recognize the exposed state of the air hose inner peripheral layer HI as a mark. In other words, the air hose inner peripheral layer HI is for visually detecting the state in which the air hose is worn by a certain amount by arranging the air hose outer peripheral layer HOR2 having the uneven shape R2 on the outer side thereof. Functions as a mark.

  Therefore, by appropriately setting the same operation rule as in the fifth embodiment, it is possible to detect the wear deterioration of the air hose relatively easily or at an early stage, and appropriate replacement after the wear deterioration is detected. By performing the above, it becomes possible to prevent air leakage problems. In addition, it is possible to prevent the occurrence of unexpected production equipment troubles, or to prevent the decline in productivity due to the stoppage of production equipment due to equipment trouble recovery, the exact replacement time of the air hose The effect similar to the effect obtained in the first embodiment can be obtained, such as the effect that can be detected, and the effect that it can be operated with an appropriate replacement cycle corresponding to the life of the air hose.

  Further, the concavo-convex shape is not limited to the groove-like pattern extending in the direction perpendicular to the above-described cross section. For example, the mark layer HIM of the first embodiment or the mark layer HIMR2 of the fourth embodiment is specifically described. Concave and convex shapes such as pattern patterns in which arrow-shaped patterns are repeatedly arranged, repeated patterns such as symbols and characters other than arrows, and pattern patterns such as stripes, meshes, and wavy lines For example, a shape that easily functions as a mark may be selected.

Embodiment 6.
In the air hose of the fourth embodiment described above, in particular, for the air hose inner peripheral layer HIR1 that functions as a mark for indicating the replacement time of the air hose, the mark layer HIMR1 having an uneven shape on the surface is provided. The configuration that functions as a mark by providing the above was described. This is because the air hose outer peripheral layer HO arranged outside the mark layer HIMR1 is a uniform material and is basically a flat surface shape even when worn and deteriorated. When the mark layer HIMR1 having the uneven shape was exposed, it functioned as a mark. Therefore, it is not limited to having an uneven shape, and it can function as a mark by causing a change in shape so as to have a contrast effect with a flat surface.

  Therefore, in the following, with respect to the air hose outer peripheral layer HO made of a uniform material, the air hose inner peripheral layer disposed on the inner side has a large number of bubble gaps (or bubble voids) at least on the surface thereof. The air hose according to the sixth embodiment having the configuration and the air hose according to the sixth embodiment modified in part will be described with reference to FIG. Hereinafter, the changing part from the fourth embodiment will be described mainly.

  First, as shown in FIG. 6A, the air hose according to the sixth embodiment is provided with a pipe E that is a tubular hollow portion through which air flows, and the entire pipe from the surface to the pipe E is provided. The air hose inner peripheral layer HIAB made of a material having a large number of bubble gaps AB and the air hose outer peripheral layer HO made of a uniform material located on the surface side of the air hose. The material having a large number of cellular gaps AB may be a so-called porous material, or a foam material, for example, a foamed plastic such as urethane foam or polyethylene foam (foam material or so-called sponge material). ). However, in any case, since the air hose inner circumferential layer HIAB that forms the pipe E is constituted, in the porous material and the foam material, bubbles are connected and provided in two broadly divided structures. It is not a material consisting of an open cell structure through which gas or liquid can pass, but a material consisting of a closed cell structure (also referred to as a single cell structure) in which gas bubbles and liquids are not allowed to pass through. It is good to choose.

  Further, regarding the respective thickness settings of the air hose inner circumferential layer HIAB and the air hose outer circumferential layer HO made of a material having a large number of cellular gaps AB, the material constituting the air hose inner circumferential layer HIAB has a large number of cellular gaps. By having AB, when the wear deterioration progresses much faster than the material constituting the air hose outer peripheral layer HO, the thickness of the air hose inner peripheral layer HIAB compared to the air hose of the fourth embodiment or the like. Should be set relatively thick. Conversely, when there is no significant difference in the progress of wear deterioration, it may be set similarly to the air hose in the fourth embodiment.

  In the air hose of the sixth embodiment described above, like the air hose of the fifth embodiment, when the surface wear deterioration progresses, an opening is formed in the air hose outer peripheral layer HO, and the inner periphery of the air hose Layer HIAB is exposed. When viewing this state, the air gap inner circumference HIAB has a bubble-like gap AB exposed and is basically visible. In the air hose outer circumference layer HO having a flat surface shape, In the exposed portion, a bubble-shaped gap AB that is clearly in a different surface state is visually recognized. Therefore, it is possible to easily visually check whether or not the air hose inner circumferential layer HIAB is exposed, and the state where the air hose inner circumferential layer HIAB is exposed can be recognized as a mark. That is, the air hose inner circumferential layer HIAB functions as a mark for visually detecting a state in which the air hose has worn a certain amount by having a bubble-like gap AB at least on the surface.

  Accordingly, by appropriately setting the same operation rule as in the fourth embodiment, it is possible to detect the wear deterioration of the air hose relatively easily or at an early stage, and appropriate replacement after the wear deterioration is detected. By performing the above, it becomes possible to prevent air leakage problems. In addition, it is possible to prevent the occurrence of unexpected production equipment troubles, or to prevent the decline in productivity due to the stoppage of production equipment due to equipment trouble recovery, the exact replacement time of the air hose The effect similar to the effect obtained in the first embodiment can be obtained, such as the effect that can be detected, and the effect that it can be operated with an appropriate replacement cycle corresponding to the life of the air hose.

  Further, in the air hose of the sixth embodiment, the air hose inner peripheral layer HIAB that functions as a mark for indicating the replacement time of the air hose is made of a material having not only the surface but also a bubble gap AB as a whole. Therefore, the air hose inner peripheral layer HIAB is exposed and the wear deterioration further proceeds until the air hose reaches the hollow portion of the pipe E, so that it functions continuously as a mark. Therefore, when the period from when the air hose inner peripheral layer HIAB is actually exposed until the operator visually recognizes the exposed state is relatively long, that is, the frequency of inspection is low. Even when the inspection interval is long, the mark functions without any problem, and the above-described effects can be obtained.

  Subsequently, an air hose according to a modification of the sixth embodiment will be described with reference to FIG. In the air hose according to the modified example of the sixth embodiment, as shown in FIG. 6 (b), a pipe E serving as a tubular hollow portion through which air flows is provided, and the entire pipe extends from the surface to the pipe E. The air hose inner circumferential layer HILB made of a material having a large number of bubble gaps LB and the air hose outer circumferential layer HO made of a uniform material located on the surface side of the air hose are common. However, it is characterized in that the air hose inner circumferential layer HILB is made of a material having a large number of bubble gaps LB filled with liquid. The material having a large number of bubble-like gaps LB filled with liquid may be configured such that microcapsules filled with liquid are dispersed and arranged in the base material of the member. Only the base material may be solidified and confined in the base material in a state in which the liquid mixed in the base material is dispersed.

  In the air hose according to the modified example of the sixth embodiment described above, the air hose inner peripheral layer made of a material having a large number of bubble gaps LB on the inner side of the air hose outer peripheral layer HO made of a uniform material. By disposing the HILB, the wear deterioration of the air hose outer peripheral layer HO progresses, and when the air hose inner peripheral layer HILB is exposed from the air hose outer peripheral layer HO, a bubble-like gap LB having a clearly different surface state is visually recognized. Is done. Therefore, it is possible to easily visually check whether or not the air hose inner circumferential layer HILB is exposed, and it is possible to recognize the exposed state of the air hose inner circumferential layer HILB as a mark. That is, the air hose inner peripheral layer HILB functions as a mark for visually detecting a state in which the air hose is worn by a certain amount by having a bubble gap LB at least on the surface. Furthermore, since this air hose inner circumferential layer HILB is made of a material having a large number of bubble gaps LB from the surface to the pipe line E, it is the same as the air hose of the sixth embodiment. An effect can be obtained.

  Further, in the air hose of the sixth embodiment, the air hose inner circumferential layer HILB is made of a material having a large number of bubble-like gaps LB filled with liquid, so that the air hose wears down. When the air reaches the air hose inner circumferential layer HILB, not only does it function as a mark by visually recognizing a large number of bubble gaps LB, but also liquid oozes out from a large number of bubble gaps LB. It is possible to more reliably detect that the air hose has deteriorated until it reaches the air hose inner circumferential layer HILB.

  For the liquid filled in the bubble-shaped gap LB, for example, if the method of Embodiment 3 is partially applied and the liquid contains a phosphor that emits light when irradiated with black light, the inner peripheral layer of the air hose HILB can be configured to contain the phosphor. As described above, when the air hose wears down to the air hose inner peripheral layer HILB, this black light is irradiated to emit light. The liquid containing the body begins to ooze from the air hose and scatters around. Furthermore, by using a method of irradiating black light at the time of inspection, the scattered light is emitted by irradiating the black light with the phosphor filled in the bubble gap LB scattered around it. To do. Therefore, for example, even when the wear part cannot be visually confirmed directly, it is possible to detect that any of the air hoses arranged near the light emission part is worn. Whether or not it is in an exposed state can be further visually confirmed.

  In the sixth embodiment and the modification thereof described above, the air hose inner circumferential layer HIAB or the air hose inner circumferential layer HILB functioning as a mark for indicating the replacement time of the air hose is entirely bubbled. However, since the air hose inner circumferential layer at least on the surface only needs to have these bubble gaps AB or bubble gaps LB, As in the first embodiment and the fourth embodiment, for example, a mark layer made of a material having the bubble gap AB or the bubble gap LB is formed only on the surface of the inner peripheral layer of the air hose. And the air hose inner peripheral layer may be composed of the same material as the air hose outer peripheral layer HO and the base layer that forms the pipe E. Even in such a configuration, the basic effects obtained in the sixth embodiment and its modifications can be obtained. In the configuration in which the mark layer made of the material having the bubble gap AB or the bubble gap LB and the base layer for forming the pipe E are provided separately, the bubble gap AB or the bubble gap LB is provided. Regarding the material, a material (foam material) having an open cell structure may be selected.

  In the first to sixth embodiments described above and modifications thereof, basically, the same material is used as the material having the same hardness characteristics for the air hose inner peripheral layer and the air hose outer peripheral layer. For example, the air hose inner peripheral layer and the air hose outer peripheral layer are selected from materials having different physical properties (for example, hardness characteristics), and the air hose outer peripheral layer is described as an example. With respect to various adverse effects (specifically, wear, chemicals, humidity, oxidation, heat, etc.) on the air hose inner peripheral layer from the outside, it has a higher resistance compared to the air hose inner peripheral layer. More specifically, the air hose outer peripheral layer has a higher strength than the air hose inner peripheral layer (a material with excellent wear resistance), a high chemical resistance material, and a high moisture resistance material. , Material with high oxidation resistance Or by using a high heat resistance material, it may be configured to improve the life of or durability of air hose itself.

  In addition, in the case where the physical properties (for example, hardness characteristics) of the air hose inner layer and the air hose outer layer are made different from each other, the air hose inner layer is preferable for forming an air conduit, For example, it is desirable to select a relatively flexible material or a material having a large expansion and contraction as a physical property (hardness characteristic) that is less likely to cause a crack or the like even when being deformed such as bending compared to the air hose outer layer.

  Moreover, in Embodiment 1-6 and the modification which performed the said description, although the example which applied this invention to the air hose used as an example of a hose material connected to an air drive device was demonstrated, The present invention can be applied in common as long as it is a hose material for flowing fluids used for various gas supply and various liquid supply, and the basics of the present invention described in the first to sixth embodiments and the modifications thereof The same effect can be obtained in the same way.

E Pipe line, HO, HOS, HOR1, HOR2 Air hose outer peripheral layer,
HI, HIC, HIC1, HIC2, HIF, HIF2, HIR1, HIR2,
HIAB, HILB Air hose inner circumference layer,
HIM, HIMF, HIMR1, HIMR2 mark layer, HIB base layer,
OP opening, R1, R2 uneven shape, AB, LB bubble-like gap.

Claims (14)

  A hose material for flowing a fluid, wherein an outer peripheral layer located on the surface side of the hose material and a conduit for flowing the fluid located inside the outer peripheral layer are formed, and the hose material has a certain amount A hose material comprising an inner peripheral layer that functions as a mark for visually detecting that it is in a worn state.   The hose material according to claim 1, wherein the hose material is an air hose for supplying air to an air driving device by flowing air as the fluid.   The hose material according to claim 1 or 2, wherein a state in which the hose material is worn by a certain amount corresponds to a replacement time of the hose material.   The inner circumferential layer includes a mark layer made of any one of a repeated pattern of symbols or characters, a pattern pattern, and a colored layer of a specific color at least on the surface. The hose material according to any one of the above.   The hose material according to any one of claims 1 to 3, wherein the inner peripheral layer functions as the mark by being formed of a colored layer colored in a different color from the outer peripheral layer.   The hose material according to claim 5, wherein an inner peripheral layer made of a colored layer colored in a color different from that of the outer peripheral layer is made up of a plurality of colored layers colored in mutually different colors.   The inner peripheral layer functions as the mark by having a concavo-convex shape on its surface or by having a concavo-convex shape in the outer peripheral layer arranged on the outer side thereof. The hose material according to any one of claims 1 to 3.   The hose material according to any one of claims 1 to 3, wherein the inner peripheral layer functions as the mark by having a large number of bubble gaps at least on the surface.   The hose material according to claim 8, wherein liquid is filled in a bubble-shaped gap in the inner peripheral layer.   The hose material according to any one of claims 1 to 3 and 9, wherein the inner peripheral layer contains a phosphor that emits light when irradiated with black light.   The hose material according to claim 10, wherein the outer peripheral layer is made of a light shielding material.   The said inner peripheral layer functions as said mark by having the uneven | corrugated shape in which the said outer peripheral layer contains the recessed part which reaches the surface of the said inner peripheral layer. The hose material according to item 1.   The hose material according to any one of claims 1 to 12, wherein at least a portion of the inner peripheral layer forming the pipe line and the outer peripheral layer are made of the same material.   The inner peripheral layer and the outer peripheral layer are made of materials having different physical properties, and the material of the outer peripheral layer is different from the material of the inner peripheral layer against various adverse effects from the outside on the inner peripheral layer. The hose material according to any one of claims 1 to 12, wherein the hose material has higher resistance.

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