JP2010043707A - Jig for flexible tube and method of preparing flexible tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the efficiency of work for stamping a mark to a body to be coated. <P>SOLUTION: This jig 10 for a flexible tube comprises a body 20, and a protrusion 22 protruding from the body. The body 20 is arranged in the tube axial direction of the flexible tube on the surface of the flexible pipe. The flexible tube is partially coated with the body to be coated. The protrusion 22 is formed on the surface of the flexible tube so as to contact the cut face of the end of the body to be coated. The body 20 has opposing faces which oppose the flexible tube and the body to be coated when the body is arranged in the pipe axial direction of the flexible tube. A first penetration hole 30 which penetrates the body 20 is formed at a part of the opposing faces which opposes the flexible tube. The protrusion 22 protrudes from a boundary between a part of the opposing faces which opposes the flexible tube and a part which opposes the body to be coated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flexible pipe jig and a flexible pipe preparation method capable of improving the efficiency of the work of marking a covering.

  The flexible pipe is a pipe having an outer peripheral portion formed by alternately arranging peaks and valleys in the tube axis direction. These peaks and valleys extend all around the circumference. Usually, the outer periphery of the flexible tube is covered with a covering. As one type of method for connecting the flexible pipe to the joint, there is a method of removing the covering at the tip and inserting it into the joint. When connecting a flexible pipe to a joint by this method, it is important to fully insert the tip of the flexible pipe into the joint. If the distal end portion of the flexible pipe is not sufficiently inserted into the joint, the flexible pipe and the joint cannot sufficiently exhibit their performance. For this reason, after marking the cover in advance and inserting the tip of the flexible tube into the joint, the tip of the flexible tube is sufficiently in the joint based on whether the mark is visible. An operation of determining whether or not it is inserted is performed.

  What is important in this operation is to accurately identify the location on the covering where the mark is to be made. This is because if the position cannot be accurately specified, it cannot be accurately determined whether or not the distal end portion of the flexible tube is sufficiently inserted into the joint. Therefore, a jig has been proposed for accurately specifying the position on the covering to be marked.

  Patent Document 1 discloses a flexible tube jig. This jig includes an engaging portion and a main body portion. The engaging portion is engaged with the distal end portion of the flexible tube. A main-body part is arrange | positioned in the length direction of this flexible pipe | tube along the outer surface of a flexible pipe | tube. A through-hole portion is formed in the main body portion. A mark can be written on the surface of the covering that covers the surface of the flexible tube through the through hole.

  Patent Document 2 discloses a flexible tube jig. This jig includes an engaging portion and a main body portion. The engaging portion is engaged with the distal end portion of the flexible tube. A main-body part is arrange | positioned in the length direction of this flexible pipe | tube along the outer surface of a flexible pipe | tube. A through-hole portion that bends in an L shape from the axial direction to the circumferential direction is formed in the main body portion. A mark can be written on the surface of the covering that covers the surface of the flexible tube through the through hole.

  According to the invention disclosed in Patent Literature 1 and Patent Literature 2, a mark can be easily and accurately written at a predetermined position of the flexible pipe.

JP 2001-108173 A JP 2002-276865 A

  However, the flexible pipe jig disclosed in Patent Document 1 and Patent Document 2 has a problem that there is room for improvement in the efficiency of the work of marking the surface of the covering. Improvement is needed because it is likely that work will have to be redone. Such a possibility is high because there is a possibility that a mark is written at an incorrect position in spite of using the jig as described above.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a flexible pipe jig and a flexible pipe preparation method capable of improving the efficiency of the work of marking a cover. Is to provide.

  In order to achieve the above object, according to an aspect of the present invention, the flexible tube jigs 10, 11, 12, and 13 include the main body portions 20 and 21 and the protruding portions 22, 24, and 26 protruding from the main body portion. Prepare. The main body portion is disposed on the surface of the flexible tube 50 in the tube axis direction of the flexible tube. On the outer peripheral portion of the flexible tube, crest portions 60 and trough portions 62 extending in the entire circumferential direction are alternately arranged in the tube axis direction. The flexible tube is partially covered with a covering 52. The protrusions 22, 24, and 26 are arranged on the surface of the flexible tube so as to contact the cut surface 55 at the end of the covering. The main body portion has a facing surface 34 that faces the flexible tube and the cover when disposed in the tube axis direction of the flexible tube. An opening 30 for confirming the exposed length of the flexible tube is formed in a portion of the facing surface that faces the flexible tube. The protruding portion protrudes from the boundary between the portion 40 facing the flexible tube and the portion 42 facing the covering on the facing surface.

  When the main body portion is disposed in the tube axis direction of the flexible tube on the surface of the flexible tube and the projecting portion is disposed on the surface of the flexible tube so as to be in contact with the end of the covering, a part of the facing surface faces the flexible tube. An opening for confirming the exposed length of the flexible tube is formed in that portion. Thereby, the surface of the flexible tube is exposed from the opening. Since the surface of the flexible tube is exposed, it can be determined whether it is the end of the flexible tube, or after marking the mark and cutting the flexible tube with reference to the mark, the end of the flexible tube It becomes possible to keep the distance from the end of the covering to the end constant. Since the distance can be kept constant, it is less likely to mark the wrong place when marking on the surface of the covering than when this is not possible. As a result, the efficiency of the work for marking the cover can be improved.

  A specific method for marking the surface of the flexible tube is not particularly limited. A method of writing a mark with a writing instrument, a method of applying a paint, and a method of scratching the surface of a flexible tube with a blade are one kind of such methods.

  According to another aspect of the present invention, the flexible tube preparation method includes a removal step S110. The removing step is a step of removing the end portion of the covering from the flexible tube covered by the covering. The cut surface at the end of the covering is along the circumferential direction of the flexible tube. On the outer peripheral portion of the flexible tube, crests and troughs extending along the entire circumference are arranged alternately in the tube axis direction. The method for preparing a flexible tube further includes an additional step S112. The adding step has a contact step S120. The contact step is a step of bringing the flexible tube jig into contact with the cut surface at the end of the covering. The flexible tube jig has a main body portion and a protruding portion protruding from the main body portion. The main body is disposed in the tube axis direction of the flexible tube on the surface of the flexible tube. The protrusion is disposed on the surface of the flexible tube so as to contact the end of the covering. The main body has an opposing surface. The opposing surface faces the flexible tube and the cover when arranged in the tube axis direction of the flexible tube. An opening for specifying the cutting position of the flexible tube is formed in a portion of the facing surface that faces the flexible tube. The protruding portion protrudes from the boundary between the portion facing the flexible tube and the portion facing the covering in the facing surface. The additional step further includes an entry step. In the entry step, a mark is entered in a portion of the flexible tube exposed from the opening.

  According to the present invention, it is possible to improve the efficiency of the work for marking a cover.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a plan view of a flexible tube jig 10 according to a first embodiment of the present invention. FIG. 2 is a front view of the flexible tube jig 10 according to the first embodiment of the present invention. FIG. 3 shows a side view of the flexible tube jig 10 according to the first embodiment of the present invention. FIG. 4 is a diagram illustrating a procedure of the connecting method of the flexible tube 50 according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating a state in which the flexible tube jig 10 is brought into contact with the flexible tube 50 in the contact step S120 according to the first embodiment of the present invention. FIG. 6 is a diagram showing a situation in which a mark is entered on the surface of the flexible tube 50 in the entry step S122 according to the first embodiment of the present invention. FIG. 7 shows an external view when the flexible tube 50 is inserted into the joint 14 in the connection step S102 according to the first embodiment of the present invention. FIG. 8 shows an external view when the pusher wheel 82 is inserted in the connection step S102 according to the first embodiment of the present invention.

  With reference to FIGS. 1-3, the structure of the jig | tool 10 for flexible tubes concerning this embodiment is demonstrated. The flexible tube jig 10 according to the present embodiment includes a main body portion 20 and a protruding portion 22.

  The main body 20 is disposed on the surface of the flexible tube 50 in the tube axis direction. The main body 20 has a facing surface 34. The facing surface 34 faces the flexible tube 50 and the covering body 52 when arranged in the tube axis direction of the flexible tube 50.

  The main body 20 has a first through hole 30 and a second through hole 32. In this embodiment, the 1st through-hole 30 and the 2nd through-hole 32 are each provided in multiple places. The first through hole 30 and the second through hole 32 both penetrate the main body 20. The first through hole 30 is formed in the first facing portion 40. The first facing portion 40 is a portion of the facing surface 34 that faces the flexible tube 50. The second through hole 32 is formed in the second facing portion 42. The second facing portion 42 is a portion of the facing surface 34 that faces the covering 52. In the present embodiment, the first through hole 30 and the second through hole 32 are long holes. However, the shape of the 1st through-hole 30 and the 2nd through-hole 32 should not be specifically limited. In the present embodiment, numbers “8”, “10”, “15”, “20”, and “25” are written beside the first through hole 30 and the second through hole 32.

  The protruding portion 22 is a rib disposed on the surface of the flexible tube 50 so as to contact the cut surface 55 at the end of the covering 52. The protruding portion 22 protrudes from the boundary between the portion 40 facing the flexible tube 50 and the portion 42 facing the covering 52 in the facing surface 34. The cross section of the protrusion 22 in the present embodiment is the same from one end to the other end and is rectangular.

  In the present embodiment, the distance L (see FIG. 2) from the contact portion 45 to the central axis of the first through hole 30 is an integral multiple of the interval between the crest portions 60 of the flexible tube 50. However, the “integer multiple” mentioned here includes not only an integer multiple in an accurate sense but also a value within a range in which the object of correctly marking the covering 52 can be achieved. In addition, the contact part 45 is a part arrange | positioned so that the end surface of the covering 52 may be contacted among the protrusion parts 22. FIG.

  With reference to FIGS. 4-8, the connection method of the flexible pipe | tube 50 concerning this embodiment is demonstrated. The connection method of the flexible tube 50 according to the present embodiment includes a preparation step S100 and a connection step S102. The preparation step S <b> 100 is a step for preparing the vicinity of the distal end portion of the flexible tube 50 so that it can be connected to the joint 14. In the present embodiment, the preparation step S100 includes a removal step S110, an addition step S112, and a cutting step S114. The removal step S110, the addition step S112, and the cutting step S114 constitute a method for preparing the flexible tube 50 according to the present embodiment. The adding step S112 is a step of adding a mark to the flexible tube 50 and the covering 52. The addition step S112 includes a contact step S120 and an entry step S122. The contact step S120 and the entry step S122 constitute a marking method for the flexible tube 50 according to the present embodiment.

  First, in the removal step S110, an operator who implements the method for connecting the flexible tube 50 according to the present embodiment (hereinafter, simply referred to as “operator”) includes the vicinity of the distal end portion of the flexible tube 50 in the covering 52. Remove the covering. By removing the covering 52, the tip of the flexible tube 50 is exposed on the surface. There is no need for the operator to consider how far the covering 52 should be removed from the tip of the flexible tube 50. The operator may remove the covering body 52 having an appropriate length.

  When the covering 52 is removed, the operator performs the contact step S120. In this step, the operator applies the flexible tube jig 10 to the flexible tube 50 as shown in FIG. The protrusion 22 of the flexible tube jig 10 is applied to the cut surface 55 of the covering 52.

  When the flexible tube jig 10 is applied to the cut surface 55 of the covering 52, the operator performs the entry step S122. In this step, the operator marks the flexible pipe 50 exposed from the first through hole 30 and the covering 52 exposed from the second through hole 32 as shown in FIG. In the case of this embodiment, these marks are entered using felt pens 70 and 71. Which of the plurality of first through holes 30 and the plurality of second through holes 32 should be inserted with the felt pens 70 and 71 is determined according to the size of the flexible tube 50. As described above, numbers are displayed near the first through hole 30 and the second through hole 32. In the case of this embodiment, these numbers indicate the size of the flexible tube 50. Instead of the size of the flexible tube 50, the number of peaks 60 or valleys 62 may be described.

  When the mark is entered, the operator performs the cutting step S144. In this step, the operator refers to the mark entered by the felt pens 70 and 71 and cuts the flexible tube 50. As apparent from FIGS. 5 and 6, in the case of this embodiment, since a mark is entered in the valley 62 of the flexible tube 50, the operator can flexibly at the place where the mark is entered. The tube 50 is cut.

  When the flexible tube 50 is cut, the operator performs the connection step S102. In this step, the operator inserts the distal end portion of the flexible tube 50 into the joint 14. The joint 14 according to the present embodiment is a known joint. The joint 14 includes a joint body 80 and a push wheel 82. After inserting the flexible tube 50 into the joint body 80 and then screwing the push ring 82 into the joint body 80, the connection between the flexible tube 50 and the joint 14 is completed. In the case of the present embodiment, if the distal end portion of the flexible tube 50 is correctly inserted into the joint 14, the mark 90 entered in the covering 52 in the entry step S122 is as shown in FIG. Hidden at the edge. When the distal end portion of the flexible tube 50 is correctly inserted into the joint 14, the operator screws the push wheel 82 into the joint body 80. Thereby, the flexible tube 50 is connected to the joint 14. At this time, if the distal end portion of the flexible tube 50 is correctly inserted into the joint 14, the above-described mark 90 appears from the end surface of the push ring 82 as shown in FIG. 8.

  As described above, in the flexible pipe connecting method according to the present embodiment, the flexible pipe 50 and the covering body 52 are marked, and the flexible pipe 50 is cut at a position where the mark is written, so that the covering body is obtained. The distance from the cut surface 52 to the tip of the flexible tube 50 is surely a constant value. Therefore, the operator does not make a mistake in measuring the length of the flexible tube 50. Accordingly, the number of work re-executions is reduced, so that the flexible tube 50 and the covering body 52 can be efficiently cut.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a diagram showing the procedure of the connecting method of the flexible tube 50 according to the second embodiment of the present invention. FIG. 10 is a diagram illustrating a state in which the flexible tube jig 10 is brought into contact with the flexible tube 50 in the confirmation step S212 according to the second embodiment of the present invention.

  The connection method of the flexible tube 50 according to the present embodiment includes a preparation step S200 and a connection step S102. The preparation step S <b> 200 is a step for preparing the vicinity of the distal end portion of the flexible pipe 50 so as to be connected to the joint 14. In the present embodiment, the preparation step S200 includes a peeling step S210, a confirmation step S212, and an entry step S214. These steps constitute a method for preparing the flexible tube 50 according to the present embodiment.

  First, in the peeling step S210, an operator who performs the flexible tube cutting method according to the present embodiment (hereinafter, simply referred to as “operator”) removes the covering 52 in the vicinity of the distal end portion of the flexible tube 50. When the covering 52 is peeled off, the vicinity of the tip of the flexible tube 50 is exposed. The length of the covering 52 to be peeled is arbitrarily determined by the operator who performs the work.

  When the covering 52 is peeled off, the operator performs a confirmation step S212. In this step, the operator removes the flexible tube jig 11 (the position of the first through hole 30 is different from that of the flexible tube jig 10) in the same form as the flexible tube jig 10 described in the first embodiment. It is used to determine whether the number of exposed portions of the crest 60 of the flexible tube 50 is appropriate. Whether the number of the exposed portions of the crest 60 of the flexible tube 50 is appropriate depends on whether the tip of the flexible tube 50 can be seen from the first through hole 30 of the flexible tube jig 11 as shown in FIG. (Conversely speaking, in the flexible tube jig 11 according to the present embodiment, when the number of exposed portions of the crests 60 of the flexible tube 50 is appropriate, the tip of the flexible tube 50 can be seen. A first through hole 30 is formed). Which of the plurality of first through holes 30 is used for the determination is determined based on the size of the flexible tube 50. As with the flexible pipe jig 10 according to the first embodiment, since a number is displayed near the first through hole 30, the operator can use the first through hole 30 used for determination based on the number. select. When it is determined that the number of exposed portions of peak portion 60 of flexible tube 50 is appropriate (YES in S212), entry step S214 is performed. If not (NO in S212), the process returns to S210, and the worker performs the peeling step again.

  When the entry step S214 is performed, the operator uses the second through hole 32 of the flexible tube jig 10 to mark the covering 52 of the flexible tube 50. A specific method for marking the covering 52 is the same as in the first embodiment. Therefore, detailed description thereof will not be repeated here.

  When the entry step S214 is completed, the operator performs the connection step S102. The specific contents are the same as in the first embodiment. Therefore, detailed description thereof will not be repeated here.

  As described above, the flexible pipe connecting method according to the present embodiment has the following two merits. The first merit is that the possibility of overcutting the covering 52 is reduced, and the yield of the flexible tube 50 is improved accordingly. The second merit is that since the number of peaks of the flexible pipe 50 is confirmed using the flexible pipe jig 10, the possibility of mistaken counting is reduced.

  The embodiments disclosed herein are illustrative in all respects. The scope of the present invention is not limited based on the above-described embodiment, and various design changes may be made without departing from the spirit of the present invention.

  For example, the form of the flexible tube jig is not limited to that described above. FIG. 11 is a plan view showing a flexible tube jig 12 according to a first modification. FIG. 12 is a side view showing the flexible tube jig 12. The flexible tube jig 12 is formed by projecting a projecting portion 24 by bending a part of the main body 21. The arrangement of the protrusions 24 is the same as that of the protrusions 22 according to the first embodiment. The height of the projecting portion 24 is a height that contacts the flexible tube 50 together with the facing surface 34 when disposed on the surface of the flexible tube 50.

  FIG. 13 is a side view showing a flexible tube jig 13 according to a second modification. This flexible tube jig 13 includes a protruding portion 26 instead of the protruding portion 22 as shown in FIG. As for this protrusion part 26, the surface which contact | connects the flexible pipe | tube 50 draws a circular arc. The radius of curvature of the surface in contact with the flexible tube 50 is substantially equal to the radius of the peak portion of the flexible tube 50.

  FIG. 14 is a plan view showing a flexible tube jig 15 according to a third modification. FIG. 15 is a side view showing the flexible tube jig 15. This flexible tube jig 15 differs from the flexible tube jig 10 according to the first embodiment in the following four points. The 1st point is that the section shape of main part 23 has drawn an arc. The cross-sectional shape of the main body portion 20 of the flexible tube jig 10 according to the first embodiment is rectangular. The second point is that end cutouts 33 are provided in portions of the main body portion 23 on both sides of the protruding portion 28. The third point is that a through groove 31 is provided in addition to the first through hole 30. Similar to the first through hole 30, the through groove 31 is a kind of opening. Therefore, the role of the through groove 31 is the same as that of the first through hole 30. Since the through grooves 31 are provided, the number of the first through holes 30 is reduced. The fourth point is that an L-shaped through hole 35 is provided instead of the second through hole 32. Further, only one second through hole 32 according to this modification is provided. This is due to the structural reason of the joint (not shown) to which the flexible pipe 50 is connected. It goes without saying that a plurality of second through holes 32 may be provided depending on the reason. It goes without saying that the shape of the second through hole 32 may be the same as that of the flexible tube jig 10 according to the first embodiment. The method of use is the same as that of the flexible tube jig 10 according to the first embodiment (depending on the position of the through groove, it may be the same as the flexible tube jig 11 according to the second embodiment).

  Moreover, the joint 14 is not limited to what was mentioned above.

  Further, the second through hole 32 is not necessarily required in the flexible tube jig 10. In this case, the flexible tube jig 10 is a jig for marking only the flexible tube 50.

  In addition, in the entry step S122 and the entry step S214, a specific method for marking the flexible tube 50 is not particularly limited. As described above, in addition to the method of filling in using the felt pens 70 and 71, a method of applying a paint using a brush or a method of scratching the surface of the flexible tube 50 using a blade may be used.

  In addition, in the entry step S122 and the entry step S214, a mark may be entered only on the flexible tube 50 exposed from the first through hole 30. In this case, the covering 52 exposed from the second through hole 32 may be marked after the end of the cutting step S144.

It is a top view of the jig for flexible tubes concerning a 1st embodiment of the present invention. It is a front view of the jig for flexible tubes concerning a 1st embodiment of the present invention. It is a side view of the jig for flexible tubes concerning a 1st embodiment of the present invention. It is a figure which shows the procedure of the connection method of the flexible pipe | tube concerning the 1st Embodiment of this invention. It is a figure which shows the condition which made the flexible pipe jig contact the flexible pipe in the contact step concerning the 1st Embodiment of this invention. It is a figure which shows the condition which fills in the mark on the surface of a flexible tube in the entry step concerning the 1st Embodiment of this invention. The external view when a flexible pipe | tube is inserted in the coupling in the connection step concerning the 1st Embodiment of this invention is shown. The external view when a press ring is inserted in the connection step concerning the 1st Embodiment of this invention is shown. It is a figure which shows the procedure of the connection method of the flexible pipe | tube concerning the 2nd Embodiment of this invention. It is a figure which shows the condition which made the flexible pipe jig contact the flexible pipe in the confirmation step concerning the 2nd Embodiment of this invention. It is a top view which shows the jig | tool for flexible tubes concerning the 1st modification of this invention. It is a side view which shows the jig for flexible tubes concerning the 1st modification of this invention. It is a side view which shows the jig for flexible tubes concerning the 2nd modification of this invention. It is a top view which shows the jig | tool for flexible tubes concerning the 3rd modification of this invention. It is a side view which shows the jig for flexible pipes concerning the 3rd modification of this invention.

Explanation of symbols

10, 11, 12, 13, 15 Flexible pipe jig 14 Joint 20, 21, 23 Main body 22, 24, 26, 28 Projection 30 First through hole 31 Through groove 32 Second through hole 33 End notch 34 Opposing surface 35 L-shaped through hole 40 1st opposing part 42 2nd opposing part 45 Contact part 50 Flexible tube 52 Covering body 55 Cut surface 60 Mountain part 62 Valley part 70, 71 Felt pen 80 Joint body 82 Press ring 90 Mark

Claims (2)

The main body,
A protrusion protruding from the main body,
The main body is disposed in the tube axis direction of the flexible tube on the surface of the flexible tube,
On the outer periphery of the flexible tube, crests and troughs extending in the entire circumference are arranged alternately in the tube axis direction,
The flexible tube is partially covered with a covering,
The protrusion is a flexible tube jig disposed on the surface of the flexible tube so as to be in contact with the cut surface of the end of the covering,
When the main body portion is disposed in the tube axis direction of the flexible tube, the main body portion has a facing surface facing the flexible tube and the covering body,
An opening for confirming the exposed length of the flexible tube is formed in a portion of the facing surface facing the flexible tube,
The flexible tube jig, wherein the protruding portion protrudes from a boundary between a portion of the facing surface that faces the flexible tube and a portion that faces the covering. A removal step of removing the end of the covering from the flexible tube covered by the covering;
The cut surface of the end of the covering body is along the circumferential direction of the flexible tube,
On the outer periphery of the flexible tube, crests and troughs extending in the entire circumference are arranged alternately in the tube axis direction,
A method for preparing a flexible tube, further comprising an additional step of adding a mark to the surface of the flexible tube from which an end of the covering has been removed,
The additional step includes a contact step of bringing a flexible tube jig into contact with the cut surface of the end of the covering,
The flexible tube jig is
The main body,
A protrusion protruding from the main body,
The main body is disposed in the tube axis direction of the flexible tube on the surface of the flexible tube,
The protrusion is disposed on the surface of the flexible tube so as to contact the end of the covering body,
When the main body portion is disposed in the tube axis direction of the flexible tube, the main body portion has a facing surface facing the flexible tube and the covering body,
An opening for identifying the cutting position of the flexible tube is formed in a portion of the facing surface that faces the flexible tube,
The protruding portion protrudes from a boundary between a portion facing the flexible tube and a portion facing the covering body in the facing surface;
The method for preparing a flexible tube, wherein the adding step further includes an entry step of entering the mark in a portion of the flexible tube exposed from the opening.

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