JP2006189089A - Pipe joining reference line marking tool and pipe joining method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joining reference line marking tool capable of easily marking a socket length marking line and insertion length marking line on a connection pipe for each pipe size and method for joining pipe with using the pipe joining reference line marking tool. <P>SOLUTION: The pipe joining reference line marking tool 11 is projectingly provided with a locking part 14 having a first reference surface 13 on a surface in a base plate side on one end in a longitudinal direction of a rectangular base plate 11, is provided with slits for socket length marking line 15a, 15b, 15c, 15d at a position of which distance from the first reference surface 13 corresponds to the socket length, has a second reference surface 19 on an end surface of the base plate 11, and is provided with slits for insertion length marking line 17a, 17b, 17c, 17d, 17e at a position of which distance from the second reference surface 19 corresponds to one third of the socket length, and is provided with an axial line marking slit 16 in a direction perpendicular to the first reference surface. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a marking entry jig for pipe joining, and more specifically, pipe joining used when a vinyl chloride resin connecting pipe is inserted into a receptacle of a vinyl chloride resin pipe joint and adhesively joined (TS joining). TECHNICAL FIELD The present invention relates to a pipe joining method for reliably joining a pipe joint and a connecting pipe using a marking entry jig for pipes and a marking entry jig for pipe joining.

  In water supply (water supply) piping, when inserting the end of a vinyl chloride resin connection pipe into the receiving port of a vinyl chloride resin pipe joint and performing adhesive bonding (TS bonding), respectively, Because there is a dimensional tolerance, the receiving end length mark is written on the outer peripheral surface at a position equal to the length of the receiving port from the end surface of the connecting tube, and the end of the connecting tube is lightly inserted into the receiving port. After filling in the position of the end face of the receiving port (zero point) on the outer peripheral surface of the connecting pipe, and after filling in the marked line indicating the bonding allowance (insertion length) from the end face position of the receiving port to the position of the predetermined dimension, Judge whether or not to join from the relationship between the mouth length standard line and the standard line indicating the position of the end surface of the receiving port. An adhesive is applied to the outer peripheral surface between the two, and a connecting pipe is inserted into the receiving port to join them together.

In addition, a jig has been proposed in which a reference line of a reference amount of insertion corresponding to the size of the connecting pipe can be easily written on the outer peripheral surface of the connecting pipe for performing TS bonding (for example, Patent Document 1). reference.).
JP 2001-349469 A

  As for the entry of each marked line mentioned above, the length of the receiving port varies depending on the size of the pipe, and the dimension from the receiving end surface to the bonding allowance also varies depending on the size. In addition, it is troublesome and time-consuming to write a marked line at a predetermined position using a scale.

  In addition, in the case where a marked line that serves as a reference for the insertion amount is entered, the marked line is entered by the connecting pipe alone regardless of the receiving port, so that sufficient bonding force can be obtained depending on the dimensional difference between the receiving port and connecting pipe. There is a risk of disappearing.

  Therefore, the present invention is able to easily enter (marking) a pipe connecting mark on the outer peripheral surface of the connecting pipe for each pipe size. In addition to providing a jig, an object of the present invention is to provide a pipe joining method capable of reliably joining a pipe joint and a connecting pipe with sufficient joint strength by using the marked line entry jig for pipe joining. Yes.

  In order to achieve the above-mentioned object, the marked line entry jig for pipe joining of the present invention is a pipe joining used for marking a marked line that serves as a reference for the amount of insertion on the outer peripheral surface of a connecting pipe to be inserted into a receiving port of a pipe joint. A marking entry jig for a projecting object, wherein a locking portion having a substrate-side surface as a first reference surface protrudes from one end in a longitudinal direction of a rectangular substrate, and the distance from the first reference surface is the receiving surface. A slit for entering a mark length of the receiving port is provided in parallel with the first reference surface at the substrate position corresponding to the length of the mouth, and the reference surface is set as one of the end surfaces in the longitudinal direction of the substrate as the second reference surface. The insertion length marking slit is provided in parallel with the second reference plane at a substrate position whose distance from the surface corresponds to 1/3 of the length of the receiving port, and , In the direction perpendicular to the first reference plane between the vicinity of the locking portion and the notch portion for entering the mark length It is characterized in that a line fill slit.

  Further, in the marking line entry jig for pipe joining of the present invention, the receiving length marking entry slit is provided at a plurality of positions at positions corresponding to the lengths of a plurality of receiving openings having different sizes. In addition, each of the receptacle length mark marking slits is provided with a size display indicating the size corresponding to each of the receptacle length mark marking slits. Are provided at a plurality of locations corresponding to each of the length of one third of the lengths of the plurality of receiving ports, and each insertion length indicator is provided in the vicinity of each insertion length marking slit. It is characterized in that a size display indicating the size corresponding to the line entry slit is provided.

  Further, the size indication provided in the vicinity of the slit for entering the length of the receptacle length is provided on the substrate surface in the direction opposite to the protruding direction of the locking portion, and in the vicinity of the slit for entering the length of the insertion length. The size indication provided on the board is provided on the substrate surface in the same direction as the protruding direction of the locking portion.

  Further, in the pipe joining method of the present invention using the mark joining jig for pipe joining, the first reference surface is brought into contact with the end face of the connecting pipe and the substrate is installed on the outer peripheral face of the connecting pipe. Enter the inlet length standard line on the outer peripheral surface of the connecting pipe through the inlet length standard slit corresponding to the size of the pipe, and enter the axis line on the outer peripheral surface of the connecting pipe through the axis input slit. In the state where the end of the connecting pipe is lightly inserted into the receiving port, the second reference surface is brought into contact with the end surface of the receiving port, and the substrate is placed on the outer peripheral surface of the connecting tube, and the size of the pipe To insert the insertion length mark line on the outer peripheral surface of the connection pipe and on or near the axis entered in the above operation through the insertion length mark insertion slit corresponding to the outer circumference of the connection pipe. Comparing the position of the receptacle length mark entered on the surface with the insertion length mark When the gauge line is farther from the end face of the connection pipe than the socket length gauge line, replace the pipe joint or connection pipe, and the insertion length gauge line extends from the socket length gauge line to the end face of the connection pipe. When in a close position, apply an adhesive between the inner peripheral surface of the receiving port and the outer peripheral surface of the connecting pipe to the insertion length mark, and the receiving end surface exceeds the insertion length mark. It is characterized in that the end of the connecting pipe is inserted into the receiving port to the position and the pipe joint and the connecting pipe are joined.

  According to the marked line entry jig for pipe joining of the present invention, the receiving length marked line and the insertion length marked line corresponding to the size of the pipe can be easily and reliably written on the outer peripheral surface of the connecting pipe. . And by entering a marked line using the marked line entry jig for pipe joining, it is possible to determine whether or not the receiving port and the connecting pipe can be joined, with the insertion length marked line as a reference. The application range of the adhesive can be surely confirmed, and the amount of the connecting pipe inserted into the receiving port can be easily confirmed.

  FIG. 1 and FIG. 2 show a first embodiment of the marked line entry jig for pipe joining according to the present invention. FIG. 1 is a perspective view seen from the front side, and FIG. 2 is a perspective view seen from the back side.

  First, as shown in FIG. 1, the marked line entry jig 11 for pipe joining has a surface on the substrate side as a first reference surface at one end in the longitudinal direction of a rectangular substrate 12 made of a synthetic resin or metal thin plate. 13 is projected in a direction perpendicular to the substrate 11, and the slits 15a, 15b, and 15c for receiving lengths corresponding to the sizes of the pipes to be joined at predetermined positions on the substrate 12 are provided. , 15d, an axis line entry slit 16, and insertion length mark line entry slits 17a, 17b, 17c, 17d, 17e.

  The receiving length marking slits 15a, 15b, 15c, 15d are located on the substrate position corresponding to the receiving length of each size at a distance from the first reference surface 13, respectively. It is provided in parallel and has a shape that intersects with an axis entry slit 16 provided in a direction perpendicular to the first reference surface 13. In addition, in the present embodiment, the slit for writing the axis line 16 extends between the vicinity of the locking portion 14 and the receiving length marking slit 15d that is located farthest from the locking portion 14. Is provided.

  The distance from the first reference surface 13 in each of the receptacle length mark entry slits is, in order from the slit closest to the first reference plane 13, the receptacle length mark entry slit 15a has a size of 50A and 75A. The length of the mouth, the slit 15b for entering the length of the receptacle length is the length of the receptacle of size 100A, and the length of the slit 15c for entering the length of the receptacle is the length of the receptacle of size 125A, The receiving length marking slit 15d corresponds to the length of the receiving port having a size of 150A.

  On the surface 11a, which is the substrate surface in the direction opposite to the protruding direction of the locking portion 14 in the substrate 11, there is a size corresponding to each slit in the vicinity of each of the receiving length marking slits 15a, 15b, 15c, 15d. And a surface display 18b indicating that the surface is a surface used when entering the receiving length mark.

  The insertion length mark entry slits 17a, 17b, 17c, 17d, and 17e have one end face in the longitudinal direction of the substrate 11 as an end face on the locking portion 14 side as the second reference plane 19, and the second The distance from the reference surface 19 is provided in parallel with the second reference surface 19 at the substrate position corresponding to the length of 1/3 of the length of each size receiving port.

  The distance from the second reference surface 19 in each insertion length mark entry slit is, in order from the slit closer to the second reference plane 19, the insertion length mark entry slit 17a is a 50A size receiving port. The insertion length mark entry slit 17b is 1/3 of the length and the insertion length mark entry slit 17c is 100A. One third of the length of the mouth, the insertion length marking slit 17d is one third of the length of the 125A receptacle, and the insertion length marking slit 17e is 150A in size. This corresponds to 1/3 of the length of the socket.

  As shown in FIG. 2, on the back surface 11b, which is the substrate surface in the same direction as the protruding direction of the locking portion 14 in the substrate 11, the insertion length mark marking slits 17a, 17b, 17c, 17d, In the vicinity of 17e, a size display 20a indicating the size corresponding to each slit and a surface display 20b indicating that the surface is used when writing the insertion length mark are provided.

  The width of each of the slits can be set appropriately, but it is possible to enter the marked line at a predetermined position in an easy-to-read manner with a writing instrument such as an oil-based felt pen used to mark the marked line on the outer peripheral surface of the connecting pipe. Set to width. In addition, the lengths of the inlet length mark entry slit and the insertion length mark entry slit can be appropriately set, but it is preferable to set different lengths in order to distinguish them.

  Next, the pipe joining method of the present invention will be described with reference to FIGS. 3 to 11 show a procedure for joining a pipe joint and a connecting pipe by using the pipe joining marking entry jig shown in the first embodiment, and FIG. FIG. 4 is a perspective view showing a state in which a straight line corresponding to the line and the axis of the connecting pipe is written on the outer peripheral surface of the connecting pipe, and FIG. 4 shows a state of the receiving length mark line and the axial line written on the outer peripheral surface of the connecting pipe. FIG. 5 is a perspective view showing a state in which the end portion of the connection pipe is lightly inserted into the receiving port, and FIG. 6 is a perspective view showing a state in which the insertion length mark is written on the outer peripheral surface of the connection pipe. FIG. 7 is a perspective view showing the state of the receptacle length mark line, the axis line, and the insertion length mark line written on the outer peripheral surface of the connection pipe, and FIG. FIG. 9 is a plan view showing a standard state of the positional relationship between the receptacle length gauge line and the insertion length gauge line when inserted, and FIG. 9 shows that the end of the connection pipe is also lightly inserted into the receptacle. FIG. 10 is a partial cross-sectional view showing a state in which an adhesive is applied. FIG. 10 is a partial cross-sectional view showing a state in which an adhesive is applied. FIG. 11 is a partial cross-sectional plan view showing a state where the connecting pipe is inserted into the receiving port.

  First, as shown in FIGS. 3 and 4, the substrate 11 is placed on the outer peripheral surface of the connection tube 21 in a state where the first reference surface 13 is in contact with the end surface 21 a on the connection side of the connection tube 21. At this time, since the protruding direction of the locking portion 14 faces the inner peripheral side of the tube, the back surface 11b of the substrate 11 is in contact with the outer peripheral surface of the connecting tube 21, and the respective indications 18a and 18b on the front surface 11a are facing forward. Become. In this state, using a writing tool 22 such as an oil-based felt pen, through a slit for filling the length of the receptacle corresponding to the size of the pipe, for example, when the size is 50A, through the slit 15a for filling the receptacle length. The receptacle length mark line 23 is written on the outer peripheral surface of the connection pipe 21, and the axis line 24 is written on the outer peripheral surface of the connection pipe 21 through the axis line writing slit 16.

  Next, as shown in FIGS. 5, 6, and 7, in the state where the end of the connection pipe 21 is lightly inserted into the receiving port of the pipe joint 25 and inserted to the position where it stops, that is, in the zero point state, the substrate 11. The substrate 11 is placed on the outer peripheral surface of the connecting pipe 21 by bringing the second reference surface 19 at one end of the connector into contact with the receiving end face 25 a of the pipe joint 25. At this time, when the engaging portion 14 is directed to the inner peripheral side of the tube, the engaging portion side of the substrate 11 is lifted from the outer peripheral surface of the tube, so that the front surface 11a of the substrate 11 is brought into contact with the outer peripheral surface of the connecting tube 21 Each display 20a, 20b is in a state of facing forward. In this state, the insertion length mark entry slit corresponding to the size of the pipe, that is, when the size is 50A, the writing tool 22 passes through the insertion length mark entry slit 17a on the outer peripheral surface of the connection pipe 21. In addition, the insertion length mark 26 is entered on or near the axis 24 entered by the above operation.

  As a result, the insertion length mark 26 is entered at a position corresponding to 1/3 of the length of the receiving port from the receiving port end surface 25a. When the end of the connecting pipe 21 is inserted into the receiving port of the pipe joint 25 and is hard and only slightly inserted, the connecting pipe 21 has a large size and the receiving port has a small size. Therefore, the connection pipe 21 or the pipe joint 25 is replaced at this point.

  Next, the entered position of the receiving length mark 23 is compared with the position of the insertion length mark 26. As shown in FIG. 8, when the position of the insertion length mark line 26 is located closer to the insertion end side of the connection pipe 21 than the receiving length mark line 23, it can be joined. As shown in FIG. 9, when the insertion length mark line 26 is located farther from the end face of the connection pipe 21 than the receiving length mark line 23, the dimensions of the connection pipe 21 are small and the dimensions of the receiving port are small. Since both dimensions are not suitable for joining, the connecting pipe 21 or the pipe joint 25 is replaced. At this time, it is possible to easily compare the positions of the two by marking the receiving length mark 23 and the insertion length mark 26 on or near the axis 24.

  After confirming that joining is possible, as shown in FIG. 10, the adhesive 27 is inserted between the inner peripheral surface of the receiving port 25 b of the pipe joint 25 and the end surface of the outer peripheral surface of the connecting pipe 21 to the insertion length mark line 26. As shown in FIG. 11, the end of the connecting pipe 21 is inserted into the receiving opening 25 until the receiving end face 25a exceeds the insertion length mark 26, and the pipe joint 25 and the connecting pipe 21 are connected. Join. Thereby, the pipe joint 25 and the connecting pipe 21 can be reliably joined.

  FIG. 12 is a plan view showing a second embodiment of the marked line entry jig for pipe joining according to the present invention. In the following description, the same components as those in the pipe joining marking entry jig shown in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the pipe joint marking tool 31 shown in the present embodiment, the substrate-side surface of the locking portion 14 protruding from one end of the substrate 12 is received as the first reference surface 13 as in the first embodiment. Mouth length marking slits 15a, 15b, 15c, and 15d are provided, and an axis writing slit 16 is provided, and the insertion length marking marking slits 17a, 17b, 17c, 17d, and 17e are provided as locking portions 14. The end surface on the opposite side is provided as a second reference surface 19 at a predetermined position. Each display 18a, 18b, 20a, 20b is provided on the surface 11a side of the substrate 11, respectively.

  In addition, the receiving length marking slit and the axis marking slit are arranged displaced on one side of the substrate 11, and the insertion length marking slit is displaced on the other side of the substrate 11. The locking portion 14 is approximately half the width of the substrate 11 in the width direction, and is provided so as to be shifted to one side provided with the receiving length marking slit and the axis writing slit. ing.

  When using the pipe joining mark entry jig 31 to write the receiving length reference line 23 and the axis 24 on the outer peripheral surface of the connection pipe 21, as in the above, the surface 11a is the front side of the connection pipe. This is performed with the first reference surface 13 in contact with the connection-side end surface. Further, when the insertion length mark line 26 is entered, the pipe reference mark entry jig 31 is directed in the opposite direction with the surface 11a facing forward, and the second reference surface 19 is brought into contact with the receiving end surface. It is done in the state.

  At this time, since the engaging portion 14 is provided on one side of the substrate width direction and the insertion length mark entry slit is provided on the other side of the substrate width direction, the insertion length mark line 26 is written. At this time, since the pipe joining marking entry jig 31 can be installed at a position where the protruding end of the locking portion 14 does not hit the outer peripheral surface of the connecting pipe, the locking portion 14 side of the substrate 11 is lifted from the outer peripheral surface of the connecting pipe. The insertion length mark line can be entered in a state where the entire back surface of the substrate 11 is in contact with the outer peripheral surface of the connecting pipe.

  FIG. 13 is a plan view showing a third embodiment of the marked line entry jig for pipe joining according to the present invention. In this embodiment, a pipe joining marking entry jig is formed for each pipe size. In this embodiment, a pipe joining marking entry jig corresponding to a pipe size of 50A is shown.

  That is, the marked line entry jig 41 for pipe joining shown in the present embodiment is provided with the receiving length marked line entry slit 15a at a position 63 mm from the first reference surface 13 of the engagement part 14, and the engagement part. 14 is provided with a slit 17a for writing a mark of the insertion length at a position 21 mm from the second reference surface 19 which is the outer surface.

It is the perspective view seen from the front side which shows the 1st example of a marked line writing jig for piping joining of this invention. It is the perspective view similarly seen from the back side. It is a perspective view which shows the state which has entered the receptacle length mark line and the axis line on the outer peripheral surface of a connection pipe. It is a perspective view which shows the state of the receptacle length mark line and axis line which were written in the outer peripheral surface of a connection pipe. It is a perspective view which shows the state which inserted the edge part of the connecting pipe lightly in the said receiving port. It is a perspective view which shows the state which has entered the insertion length mark on the outer peripheral surface of a connection pipe. It is a perspective view which shows the state of the receptacle length mark line, the axis line, and insertion length mark line which were written in the outer peripheral surface of a connection pipe. It is a top view which shows the time when the positional relationship of a receptacle length mark line and insertion length mark line when the edge part of a connecting pipe is inserted lightly in the said receptacle is a standard state. It is a top view which shows the time of the positional relationship of a receptacle length mark line and insertion length mark line when the edge part of a connection pipe is inserted lightly in the said receptacle similarly. It is a partial cross section top view which shows the state which apply | coated the adhesive agent. It is a partial cross section top view which shows the state which has inserted the connection pipe in the receptacle. It is a top view which shows the 2nd example of the marked line writing jig for piping joining of this invention. It is a top view which shows the 3rd example of a marked line writing jig for piping joining of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11, 31, 41 ... Marking entry jig for pipe joining, 11a ... Front surface, 11b ... Back surface, 12 ... Board | substrate, 13 ... 1st reference surface, 14 ... Locking part, 15a, 15b, 15c, 15d ... Receptacle Length marking slit, 16 ... Axis marking slit, 17a, 17b, 17c, 17d, 17e ... Insertion length marking slit, 18a ... Size display, 18b ... Surface display, 19 ... Second reference Surface, 20a ... Size display, 20b ... Surface display, 21 ... Connection pipe, 21a ... End face, 22 ... Writing instrument, 23 ... Receptacle length gauge line, 24 ... Axis, 25 ... Pipe joint, 25a ... Receptacle end face, 25b ... receiving port, 26 ... insertion length mark, 27 ... adhesive

Claims (5)

  A pipe joining marking entry jig used for marking a reference line for the amount of insertion on the outer peripheral surface of a connecting pipe to be inserted into a pipe joint receiving port, at one end in the longitudinal direction of a rectangular substrate A locking part whose surface on the substrate side becomes the first reference surface is projected, and a slit for entering a mark for the length of the receiving port is formed at the position of the substrate whose distance from the first reference surface corresponds to the length of the receiving port. Provided in parallel with the first reference plane, and the distance from the reference plane corresponds to one third of the length of the receiving port with one end face in the longitudinal direction of the substrate as the second reference plane A marking line entry jig for pipe joining, wherein a slit for entering a mark length of insertion length is provided in parallel with the second reference plane at the substrate position.   2. An axis line entry slit in a direction perpendicular to the first reference plane is provided between the vicinity of the locking portion and the cut-out portion for filling the length of the receptacle length. Marking jig for pipe connection as described.   The receptacle length mark entry slit is provided at a plurality of locations corresponding to each of the lengths of the plurality of receptacles of different sizes, in the vicinity of each receptacle length mark entry slit, A size display indicating the size corresponding to each receptacle length mark entry slit is provided, and the insertion length mark entry slit is 1/3 of the length of a plurality of receptacles of different sizes. In addition to being provided at multiple locations at positions corresponding to each of the lengths, a size display indicating the size corresponding to each insertion length mark entry slit is provided in the vicinity of each insertion length mark entry slit. The marked line entry jig for pipe joining according to claim 2, which is provided.   The size indication provided in the vicinity of the receptacle length mark entry slit is provided on the substrate surface opposite to the protruding direction of the locking portion, and provided in the vicinity of the insertion length mark entry slit. The marked line entry jig for pipe joining according to claim 3, wherein the size display is provided on the substrate surface in the same direction as the protruding direction of the locking portion.   A method for joining pipes using the marking entry jig for pipe joining according to claim 4, wherein the first reference surface is brought into contact with an end face of the connecting pipe, and the substrate is placed on the outer peripheral face of the connecting pipe. In the installed state, enter the receiving length mark on the outer peripheral surface of the connection pipe through the receiving length marking entry slit corresponding to the size of the pipe, and pass the axis through the axis writing slit to the outer periphery of the connecting pipe. With the operation of filling in the surface, with the end of the connecting pipe lightly inserted into the receiving port, the second reference surface is brought into contact with the end surface of the receiving port, and the substrate is installed on the outer peripheral surface of the connecting tube, Connect the insertion length standard line on the outer peripheral surface of the connection pipe and on or near the axis entered in the above operation through the insertion length standard line entry slit corresponding to the size of the pipe. Compare the position of the receptacle length mark entered on the outer circumference of the pipe with the insertion length mark. When the insertion length standard line is located farther from the end face of the connection pipe than the receiving length standard line, replace the pipe joint or connection pipe, and the insertion length standard line connects to the connection length standard line from the connection length standard line. When an adhesive is applied between the end surface on the inner peripheral surface of the receiving port and the outer peripheral surface of the connecting pipe and the insertion length mark line, the receiving end surface has the insertion length indicator. A method of joining pipes, characterized in that the end of the connecting pipe is inserted into the receptacle until the position exceeds the line, and the pipe joint and the connecting pipe are joined.

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