JP6177539B2 - Processing equipment - Google Patents

Description

  The present invention relates to a processing apparatus that cuts or cuts an anticorrosion part of an anticorrosion ring.

Conventionally, a fluid pipe is provided with an anticorrosion ring that includes an attachment part that fits externally on the outer peripheral surface of the end part of the fluid pipe and an anticorrosion part that contacts the pipe end face of the fluid pipe after being cut for length adjustment in piping work. In general , the pipe end face is subjected to anticorrosion treatment by being attached . However, the inner and outer diameters of the fluid pipes that are subject to anticorrosion vary somewhat even if they are of similar standards. For example, when the inner diameter of the target fluid pipe is small, the anticorrosion part The inner end of the tube protrudes to the inside of the fluid pipe, and the anticorrosion ring is brought into contact with the pipe end surface due to the fluid pressure of the fluid passing through the fluid pipe, the washing pipe using a washing pipe pig, etc. There was a risk of leaving. Therefore, after covering the end of the fluid pipe with an anti-corrosion cap, the adhesive material corresponding to the anti-corrosion part in the anti-corrosion cap (anti-corrosion ring) and the surplus part that protrudes inside the inner peripheral surface of the fluid pipe of the flange part is cut. There are cases in which excision is performed using means (see, for example, FIG. 3 of Patent Document 1).

JP 2001-173881 A (page 3, FIG. 3)

  However, when cutting off the surplus portion in the rust preventive cap shown in Patent Document 1, since the surplus portion is cut after the anticorrosion cap is certainly put on the end of the fluid pipe, the adhesive material and the flange in the rust preventive cap Although the part can be accurately adjusted to the inner diameter of the fluid pipe, when a cutter is used as the cutting means, the inside of the fluid pipe can be visually confirmed from the outside even if the insertion angle and the insertion amount of the cutter are sufficiently careful. Since this is difficult, the inner peripheral surface may be damaged, and rust may be generated at the wound.

  The present invention was made paying attention to such a problem, and in a state where the anticorrosion ring is attached to the fluid pipe, a portion that protrudes inward from the inner peripheral surface of the fluid pipe in the anticorrosion part of the anticorrosion ring, It is an object of the present invention to provide a processing apparatus that can be accurately cut or cut and removed without damaging the inner peripheral surface of the fluid pipe.

In order to solve the above problems, the processing apparatus of the present invention provides:
A processing device capable of cutting or cutting an excess portion in a corrosion prevention portion of a corrosion prevention ring attached to a pipe end portion of a cut fluid pipe,
Guide means guided in a circumferential shape with the inner peripheral surface of the fluid pipe located in the vicinity of the pipe end of the fluid pipe as a movement reference plane, and supported by the guide means, with guidance in the guide means, And processing means having a processing part capable of cutting or cutting an excess portion of the anticorrosion part protruding in the inner diameter direction from the inner peripheral surface of the fluid pipe.
According to this feature, since the guide means guides the processing portion of the processing means along the peripheral surface shape of the fluid pipe, the processing portion can move based on the peripheral surface shape of the fluid pipe, and the anticorrosion of the anticorrosion ring. The excess portion in the portion can be removed by cutting or cutting accurately along the peripheral shape of the fluid pipe.
Moreover, the excess part in the anticorrosion part of the anticorrosion ring can be removed by cutting or cutting without being affected by the thickness of the fluid pipe.

An adjusting means capable of adjusting a radial distance between the processing portion of the processing means and the movement reference surface of the guide means is provided.
According to this feature, since the position of the processing portion of the processing means can be adjusted with respect to the pipe end portion of the fluid pipe, the processing portion does not damage the inner peripheral surface of the fluid pipe and the anticorrosion portion of the anticorrosion ring. The diameter can be accurately adjusted to the inner peripheral surface of the fluid pipe.

The processing means includes a longitudinal adjustment means capable of moving and adjusting the processing portion in the tube axis direction.
According to this feature, the processing portion can be prevented from being excessively inserted by the front-rear adjusting means, and thus the inner peripheral surface of the fluid pipe is not damaged.

It is a sectional side view which shows a mode before attaching the processing apparatus in Example 1 to a fluid pipe | tube. It is a front view which shows the state which attached the processing apparatus in Example 1 to the fluid pipe | tube. It is a sectional side view which shows the state which attached the processing apparatus in Example 1 to the fluid pipe | tube. (A) is an upper side figure of the processing apparatus in Example 1, (b) is an expanded sectional view which similarly shows the process part of a processing apparatus. (A) is a partial expanded side sectional view which shows the state which partially stabbed the cutter which is a process part in the surplus part of the anticorrosion part in the anticorrosion ring in Example 1, (b) is also a surplus part. It is a partially expanded side sectional view which shows the state which the cutter penetrated. FIG. 6 is a partially enlarged side cross-sectional view showing a modified example in the first embodiment. FIG. 6 is a front view showing a modification example in the first embodiment. It is a sectional side view which shows the state which attached the processing apparatus in Example 2 to the fluid pipe | tube. It is a front view which shows the state which attached the processing apparatus in Example 2 to the fluid pipe | tube. It is a sectional side view which shows the state which attached the processing apparatus in Example 3 to the fluid pipe | tube. It is a front view which shows the state which attached the processing apparatus in Example 3 to the fluid pipe | tube. It is a three-plane figure which shows one member which comprises the processing apparatus in Example 4. FIG. It is a sectional side view which shows the mode before attaching the other member which comprises the processing apparatus in Example 4 to a fluid pipe | tube. (A) is a sectional side view which shows the state which attached the other member which comprises the processing apparatus in Example 4 to the fluid pipe | tube, (b) is a mode that the surplus part of the anticorrosion part in a corrosion prevention ring is similarly excised FIG. FIG. 10 is a side view showing a modified example in the fourth embodiment. It is a sectional side view which shows the state which attached the processing apparatus in Example 5 to the fluid pipe | tube.

  EMBODIMENT OF THE INVENTION The form for implementing the processing apparatus which concerns on this invention is demonstrated below based on an Example.

  A processing apparatus according to the first embodiment will be described with reference to FIGS. In the following description, the front side in FIG. 2 is the front side of the fluid pipe, and the front side in FIG. 1 is the side side of the fluid pipe.

  As shown in FIG. 1, the fluid pipe 2 of the present embodiment is made of, for example, ductile cast iron for waterworks buried in the ground, and is formed in a substantially circular shape in cross section, and the inner peripheral surface is powder-coated or Covered with a mortar layer. The fluid pipe according to the present invention may be made of other metals such as cast iron and steel. Furthermore, the inner peripheral surface of the fluid pipe is not limited to the mortar layer, and may be coated with, for example, an epoxy resin or the like, or an appropriate material may be coated on the inner peripheral surface of the fluid pipe with powder coating. Further, in this embodiment, the fluid in the fluid pipe is clean water, but the fluid flowing in the fluid pipe is not necessarily limited to clean water, for example, industrial water, agricultural water, sewage, etc., gas, gas and liquid The gas-liquid mixture may be used. Furthermore, even if the fluid pipe is of the same standard, there are slight deviations in the inner and outer diameters depending on the thickness of the metal pipe body and the thickness of the mortar layer. For example, the fluid pipe 2 shown in FIG. The inner diameter is slightly larger than the standard fluid pipe of the same standard.

  Reference numeral 3 shown in FIG. 1 denotes a fluid pipe 2 that is an insertion pipe inserted into a receiving pipe having a receiving shape in an existing fluid pipe network (not shown) and connected to the receiving pipe by a push ring or the like. The anticorrosion ring is attached to the pipe end portion of the fluid pipe 2 and prevents the pipe end surface 2a of the fluid pipe 2 from being corroded. Can be played.

  As shown in FIG. 1, the anticorrosion ring 3 includes an anticorrosive adhesive layer 4 (see FIG. 5) that is attached to the pipe end surface 2 a of the fluid pipe 2 over the entire circumference, and the anticorrosive adhesive layer 4 on the pipe end surface 2 a. A first resin body 5 to be pressed; and a second resin body 6 having a mounting portion 7 that is fitted on the outer periphery of the fluid pipe 2 and a holding portion 8 that extends in an inner diameter direction from an end portion of the mounting portion 7. ing. The second resin body 6 is formed so as to form an annular shape when viewed from the front by a synthetic resin material having elasticity such as polypropylene, and a first resin body 5 described later is fixed to the holding portion 8.

  In addition, the boundary between the holding portion 8 and the attachment portion 7, that is, the inner diameter of the second resin body 6 is larger than any outer diameter of the fluid pipe within the same standard to which the anticorrosion ring 3 is attached. Since it is designed, as described above, it can be commonly attached to various fluid pipes having different outer diameters within the same standard to prevent corrosion.

  Furthermore, the inner diameter side end portion of the first resin body 5 protrudes from the inner diameter direction end portion of the holding portion 8 in a natural state so as to be smaller than any inner diameter of the metal portion in the fluid pipe of the same standard. Therefore, it can be attached in common to various fluid pipes having different inner diameters within the same standard to prevent corrosion.

  Reference numeral 1 shown in FIG. 1 indicates that the anticorrosion ring 3 has been attached to the fluid pipe using the anticorrosion adhesive layer 4 and is located on the inner side of the inner peripheral surface 2b of the fluid pipe 2 in the anticorrosion ring 3. The processing apparatus which can cut | disconnect the protrusion part is shown.

  As shown in FIGS. 1 to 3, the processing apparatus 1 includes a first abutting portion 10 that is a guiding means that abuts on the inner peripheral surface 2 b of the fluid pipe 2 and a first abutting portion that abuts on the outer peripheral surface 2 c of the fluid pipe 2. 2 has a contact portion 11, a third contact portion 12 that comes into contact with the tube axial direction end portion 8 a of the anticorrosion ring 3, and a processing means 13 having a cutter as a processing portion to be described in detail later. , Handles 14 and 15 are provided to be gripped when the user performs a cutting operation.

  As shown in FIGS. 1 and 3, the first abutting portion 10 is a roller that extends from one of the base portions 9 that are U-shaped in a substantially sectional view, which is a base member of the processing apparatus 1, that is, from the flange portion 9 a on the inner diameter side. It is mainly configured by a base 16 and rollers 18 and 18 that are supported on the roller base 16 by a shaft member 17 in parallel with the pipe axis direction of the fluid pipe 2.

  The second abutting portion 11 is supported by being fixed by screws 19 and 19 to a bent piece 9c bent further outward from the other flange portion 9b of the processing device base 9, that is, the outer diameter side flange portion 9b (see FIG. 2). ), A fork member 20 having screw holes 20a and 20a into which the screws 19 and 19 are screwed, a roller base 21 fixed to the fork member 20, and a shaft member 22 and 22 for fluid. The roller 2 is mainly composed of rollers 23 and 23 supported in parallel with the tube axis direction of the tube 2.

  Further, as shown in FIG. 2, elongated holes 24 and 24 through which the screws 19 and 19 are inserted are formed in the bending piece 9 c of the processing apparatus base 9, and the screws 19 and 19 are inserted into the elongated holes 24 and 24. Since it can move, the second contact portion 11 can move up and down. As shown in FIGS. 1 and 3, the processing apparatus 1 temporarily moves the second contact portion 11 upward to prevent corrosion. It can be mounted without interfering with the ring 3. In addition, the upward movement of the second abutting portion 11 can be restricted by bringing the tip 60a of the fixing screw 60 screwed into the upper portion of the bent piece 9c into contact with the fork member 20.

  As shown in FIGS. 3 and 5, the processing apparatus 1 has the first contact portion 10 and the second contact portion 11 inserted and attached to a position where the anticorrosion ring 3 does not interfere, and the third contact portion. The position of 12 in the tube axis direction is positioned by abutting the end 12a of the anticorrosion ring 3 in the tube axis direction.

  As shown in FIGS. 2 and 3, the processing apparatus 1 is attached to the fluid pipe 2 so that the pipe wall is clamped at three points by the first contact part 10 and the second contact part 11. . Since the rollers 18 and 18 of the first contact portion 10 are in contact with the inner peripheral surface 2b of the fluid pipe and the rollers 23 and 23 of the second contact portion 11 are in contact with the outer peripheral surface 2c of the fluid pipe, respectively. The processing apparatus 1 can be moved along the shape.

  As shown in FIGS. 3 and 4 (a), a rectangular tube 25 is formed between the flanges 9a and 9b of the processing apparatus base 9 so as to extend toward the handles 14 and 15, and processing means. 13 has this rectangular tube 25 and a cutter 26 loosely fitted in the rectangular tube 25, and a plate body 28 to which an adjusting screw 27 is screwed is fixed to a fixing screw 29 at the rear end of the rectangular tube 25. , 29,...

  As shown in FIG. 4B, the cutter 26 has a groove 30 a formed at the tip, and the front member 30 into which a blade 33 that can be replaced in the groove 30 a is fitted, and the adjustment screw 27. The rear member 31 having the concave portion 31a with which the end portion 27a is engaged is fastened with screws 32, 32, and the cutter 26 is interlocked with the advancement / retraction of the adjustment screw 27 as the front / rear adjustment means. Yes. Thus, since the position of the cutter 26 can be adjusted in the tube axis direction, excessive insertion is prevented and the inner peripheral surface 2b of the fluid tube 2 is hardly damaged. The blade 33 is not limited to being replaceable, and may be integrated with the cutter 26.

  The blade portion 33a of the blade 33 is formed so as to be directed in the operation direction of the processing apparatus 1 (clockwise in the front view here) and to be inclined on one surface on the inner diameter side of the fluid pipe 2 (see FIG. 5). The blade portion may be formed so as to have an inclination on one surface on the outer diameter side of the fluid pipe or on both the inner and outer surfaces in the radial direction. Furthermore, it goes without saying that the operation direction of the processing apparatus 1 may be counterclockwise, and in this case, the blade portion 33a is provided in the counterclockwise direction. Alternatively, the blade portion may be formed on both the clockwise and counterclockwise sides, and may be configured to operate in either the clockwise or counterclockwise direction.

  The state of cutting of the anticorrosion part of the anticorrosion ring 3 when actually protruding from the inner peripheral surface 2b of the fluid pipe 2 will be described with reference to FIGS. In the present embodiment, the case where the first resin body 5 in the anticorrosion ring 3 protrudes from the inner peripheral surface 2b of the fluid pipe 2 will be described as an example.

  First, as shown in FIG. 5A, after the adjustment screw 27 is fed and the blade 33 of the cutter 26 is inserted into the first resin body 5 in the anticorrosion ring 3 at a predetermined depth, the handles 14 and 15 are operated. Then, the processing apparatus 1 is rotated once in the direction shown in FIG. 2 to form a cut surface having a predetermined depth in the first resin body 5 in the anticorrosion ring 3.

  Subsequently, as shown in FIG. 5 (b), the adjusting screw 27 is further fed and inserted until the blade 33 of the cutter 26 penetrates the first resin body 5 in the anticorrosion ring 3, and the handles 14 and 15 are similarly mounted. By operating, the processing apparatus 1 is rotated once in a clockwise direction, and the excess first resin body 5 in the anticorrosion ring 3 is cut.

  In addition, without adjusting the feed amount of the cutter 26, the surplus portion of the anticorrosion portion may be cut at a time, or conversely, it may be divided into two or more times, or at the time of cutting The number of rotations of the processing means 13 may also be divided into a plurality of times of one time or two times or more.

  As described above, in the processing apparatus 1, the radial position of the cutter 26 is substantially the same height as the inner peripheral surface 2 b of the fluid pipe 2 in a state where the first contact portion 10 is in contact with the inner peripheral surface 2 b of the fluid pipe. Since the fluid pipe inner peripheral surface 2b is the movement reference surface, the anticorrosion part of the anticorrosion ring 3, that is, the anticorrosive adhesive layer 4 and the surplus protruding beyond the fluid pipe inner peripheral surface 2b in the first resin body 5 The portion can be cut or cut along the inner peripheral surface 2b of the fluid pipe, and the diameter of the anticorrosion portion of the anticorrosion ring 3 can be accurately matched to the inner peripheral surface 2b of the fluid pipe without damaging the inner peripheral surface 2b of the fluid pipe. it can.

  Further, since the distance between the first contact portion 10 and the second contact portion can be adjusted by the long holes 24 and 24 and the screws 19 and 19, it is possible to cope with the deviation of the inner diameter and the outer diameter in the fluid pipe of the same standard. And versatility.

  In addition, as for the penetration of the 1st resin body 5 by the blade 33 of the above-mentioned cutter 26, ie, the maximum feed amount of the cutter 26, it is desirable that the front-end | tip of the blade 33 of the cutter 26 is flush with the back surface of the 1st resin body 5. Therefore, in order not to exceed the maximum feed amount, a guide 34 as shown in FIG. 5B may be attached to the flange portion 9a in the processing device base 9 to restrict the feed of the cutter 26. The screw head 27b of the adjustment screw 27 may contact the plate body 28 at the maximum feed amount, or a mark may be provided on the adjustment screw 27 so that the maximum feed amount can be visually recognized.

  In addition, as shown in FIG. 6, by tilting the rectangular tube 25 formed between the flanges 9a and 9b, even when the cutter 26 is sent out more than the maximum feed amount, the blade 33 becomes a fluid pipe. You may design so that it may not contact | abut 2 inner peripheral surface 2b.

  In addition, since the 1st resin body 5 in the anticorrosion ring 3 is a material which is easy to elastically deform, there exists a possibility that the 1st resin body 5 may deform | transform in the advancing direction of the blade 33 by the press of the blade 33, and, thereby, the 1st resin body. 5 may become a tapered surface having a gradual thickness in the direction of insertion, but as shown in this modification, the rectangular tube 25 is inclined to change the advancing angle of the cutter 26. Thus, the taper angle of the cut surface due to the elastic deformation of the first resin body 5 can be offset, and the cut surface of the first resin body 5 in the anticorrosion ring 3 can be made parallel to the inner peripheral surface 2b of the fluid pipe.

  Further, as shown in FIG. 2, the processing apparatus 1 is attached to the fluid pipe 2 so that the pipe wall is clamped at three points by the first contact portion 10 and the second contact portion 11. It is moved clockwise as viewed from the front by the operation of the handles 14 and 15, but at this time, since the load is easily applied to the roller 23 ′ on the moving direction side, the moving direction in the rotating direction as shown in FIGS. The anti-corrosion ring 3 made of a resin body attached to the end of the fluid pipe 2 is elastically deformed so that the auxiliary roller 35 is attached before the roller 23 'on the side and the other roller 23 is prevented from floating. Then, it may be possible to suppress detachment.

  Next, a processing apparatus according to the second embodiment will be described with reference to FIGS. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  As shown in FIGS. 8 and 9, the processing means 13A in the processing apparatus 1A is fixed to a flange 9c between the flanges 9a and 9b in the processing apparatus base 9A. Specifically, a reference hole 36 and a long hole 37 are formed in the flange portion 9c, and the processing means 13A is capable of moving a screw 39 within the range of the long hole 37 and is pivotally supported by the reference hole 36 with a screw 38. Therefore, it can be rotated within the range of the long hole 37.

  The processing portion in the processing apparatus 1A is mainly configured by a cutter base 40 to which screws 38 and 39 are fixed, a blade 33A having a blade portion 41 facing the circumferential direction of the fluid pipe 2 so as to be replaceable by a screw 42. The blade portion 41 has a tapered surface in the outer diameter direction. The blade portion may be formed with a tapered surface in the inner diameter direction, or may be formed with tapered surfaces on both the inner and outer sides in the radial direction. And by the rotational movement of the processing device 1A, the piercing angle of the anticorrosion ring 3 into the first resin body 5 can be adjusted, that is, in the radial direction between the blade portion 41 and the fluid pipe inner peripheral surface 2 which is the movement reference surface. The interval can be adjusted. That is, the screw 39 and the long hole 37 constitute the adjusting means in this embodiment. The blade 33A is not limited to being replaceable, and may be integrated with the cutter base 40.

  When cutting the anticorrosion part of the anticorrosion ring 3 protruding from the inner peripheral surface 2b of the fluid pipe 2, the processing apparatus 1A first adjusts the position of the screw 39 to adjust the angle of the processing means 13A, and the first resin body 5 The blade 33A is inserted into the first resin body 5 at a predetermined depth with the insertion angle of the blade 33A shallow, and then the handles 14 and 15 are operated to rotate the processing apparatus 1A in the direction shown in FIG. Thus, a cut is formed so as not to separate a part of the first resin body 5.

  Subsequently, the position of the screw 39 is adjusted to increase the insertion angle of the blade 33A into the first resin body 5, and the handle 14 and 15 are further operated to move the processing apparatus 1A in the direction shown in FIG. Then, by rotating once, the surplus portion of the first resin body 5 in the anticorrosion ring 3 is completely cut. According to this, by reducing the insertion angle of the first blade 33 </ b> A, it is possible to reduce the burden on the handle operation and to reduce the distortion of the cut due to the elastic deformation of the first resin body 5.

  In addition, without adjusting the piercing angle of the blade 33A, the surplus portion of the anticorrosion portion may be cut at a time, or conversely, it may be divided into a plurality of two degrees or more, or the processing means 13A. The number of rotations may be divided into one or a plurality of times of two or more, and the processing apparatus 1A is further rotated one or more times in a state where the piercing angle of the blade 33A is shallow, and the first resin body 5 is rotated. You may cut | disconnect the excess 1st resin body 5 cut | disconnecting a part in multiple times.

  When the processing means 13A in the embodiment described above is used, the blade portion 41 of the blade 33A faces the circumferential direction of the fluid pipe 2, so that it is easy to confirm the positional relationship between the inner peripheral surface 2b of the fluid pipe 2 and the blade portion 41. The excess part of the anticorrosion part in the anticorrosion ring 3 can be excised accurately.

  Further, since the piercing angle of the blade 33A can be adjusted, it is possible to cope with the deviation of the inner diameter in the fluid pipe of the same standard, and the versatility is high.

  Next, a processing apparatus according to Example 3 will be described with reference to FIGS. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  As shown in FIGS. 10 and 11, the processing apparatus 1 </ b> B includes a centering member 43 including a plurality of tension rods 44 each of which can be adjusted in length, and a shaft that is rotatable about the center of the centering member 43. And a supported processing means 13B.

  The processing means 13B mainly includes a base portion 9B, a flange portion 45 extending in the outer diameter direction from the base portion 9B, a processing portion 48, and a bent flange 46 connecting the processing portion 48 and the flange portion 45. . Further, the centering member 43 and the shaft hole 43a formed in the center of the centering member 43 in the tube axis direction function as guide means so that the processing means 13B is guided along the inner peripheral shape of the fluid pipe 2. It has become.

  Further, the projecting rods 44, 44,... Of the centering member 43 can be held in contact with the inner peripheral surface 2b of the fluid pipe, respectively, so that the fluid pipe 2 can hold the processing device 1B. Are respectively provided with buffer members 44a, 44a,... Enclosing the spring 44b so as not to damage the inner peripheral surface 2b of the fluid pipe.

  Long holes 46a, 46a are formed in the bending rod 46, and the flange portion 45 of the base portion 9B and the bending rod 46 are connected by fixing screws 47, 47 through the long holes 46a, 46a. Therefore, the processing means 13B is provided with an adjustment means that can adjust the radial direction in the vertical direction within a range in which the fixing screws 47, 47 can move within the long holes 46a, 46a. The processing portion 48 is an electric mill, and a blade 48a, which is a processing portion that is rotated by a motor, is provided at the tip so as to be parallel to the inner peripheral surface 2b of the fluid pipe. In addition, the power supply used for the process part 48 may incorporate a rechargeable battery, and may procure from the outside.

  Further, a bent protruding piece 45a is formed at the outer diameter side end of the flange 45, and the bent portion 46b of the bent flange 46 comes into contact with the protruding piece 45a to be regulated. The blade 48a of the processing portion 48 is designed not to contact the fluid pipe inner peripheral surface 2b in the contact state. In addition, it is good also as movement restrictions of the process part 48 by not providing this protrusion 45a but the fixing screws 47 and 47 contact | abutting to the outer-diameter side edge part of the said long holes 46a and 46a.

  When cutting the surplus portion of the anticorrosion portion of the anticorrosion ring 3 protruding from the inner peripheral surface 2b of the fluid pipe 2 using the processing apparatus 1B, first, the processing portion is formed by the fixing screws 47, 47 and the long holes 46a, 46a. The centering member 43 is inserted into the fluid pipe 2 in a state where the height of 48 is lowered and the blade 48 a is arranged on the inner diameter side of the anticorrosion part of the anticorrosion ring 3. Subsequently, the projecting rods 44, 44,... Are brought into contact with the inner peripheral surface 2 b of the fluid pipe, and the axis of the base portion 9 </ b> B is set as the central axis of the fluid pipe 2.

  Next, the height of the processing portion 48 is increased while rotating the blade 48a of the processing portion 48, and the outer diameter of the blade 48a is finally increased until the bent portion 46b of the bending rod 46 is brought into contact with the protruding piece 45a. The fixing screws 47 and 47 are tightened to fix the radial position of the blade 48 a of the processed portion 48. Subsequently, the processing means 13 </ b> B is rotated once in the shaft hole 43 a of the centering member 43 to cut the excess portion of the first resin body 5 in the anticorrosion ring 3. The cutting may be performed while the height of the blade 48 is adjusted a plurality of times, or the number of rotations of the processing portion 48 may be divided into a plurality of times of two or more.

  When the processing apparatus 1B in the embodiment described above is used, the centering member 43 causes the shaft core of the base portion 9B to be centered on the central axis of the fluid pipe 2, so that the anticorrosion ring can be accurately aligned with the peripheral surface shape of the fluid pipe. The surplus part of the anticorrosion part in 3 can be excised. Further, since the radial distance between the inner peripheral surface 2 of the fluid pipe as the movement reference surface and the outer edge of the blade 48a can be adjusted, it is possible to cope with the deviation of the inner diameter of the fluid pipe in the same standard. The processing unit 48 is not limited to an electric mill, and a cutter or the like taken as an example in the first embodiment may be used.

  Next, a processing apparatus according to Embodiment 4 will be described with reference to FIGS. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  As shown in FIGS. 12 and 13, the processing apparatus 1 </ b> C includes a cutter 49 as processing means and a separate cover member 50 as guide means, and the cutter 49 is a blade as a processing unit. The cutter part 51 provided with 53,53 and the holding part 52 are provided. Further, a cavity 54 is formed between the blades 53 and 53, and the cut first resin body 5 can be removed through the cavity 54 when the surplus portion in the anticorrosion part of the anticorrosion ring 3 is excised. It is like that.

  Further, the cutter 49 is formed with a bent piece 55 projecting to the outer diameter side on the rear side of the cutter portion 51, and the bent piece 55 comes into contact with the end portion 8 a of the anticorrosion ring 3 in the tube axis direction. Over-insertion can be regulated. Furthermore, the cutter part 51 is provided with a guide part 56 that does not have the blades 53 at the tip part.

  As shown in FIG. 14B, the cover member 50 is formed in a substantially C shape in a sectional view capable of elastically returning in the diameter increasing direction that can cover the inner peripheral surface 2b of the fluid pipe 2 over almost the entire circumference. The gripping pieces 50a are provided at both ends in the radial direction.

  When the surplus portion of the anticorrosion part of the anticorrosion ring 3 protruding from the inner peripheral surface 2b of the fluid pipe 2 is cut using the processing apparatus 1C, the diameter of the cover member 50 is first reduced by bringing the gripping pieces 50a and 50a closer to each other. In this state, the cover member 50 is inserted into the fluid pipe 2, and the gripping pieces 50a and 50a are released to cover the inner peripheral surface 2b of the fluid pipe.

  Next, as shown in FIG. 14 (b), the cutter 49 is inserted into the fluid pipe 2, and the excess portion of the first resin body 5 of the anticorrosion ring 3 within the range covered by the cover member 50 is excised. To do.

  Then, after the cutting of the surplus portion of the first resin body 5 of the anticorrosion ring 3 within the range covered by the cover member 50 is completed, the cover member 50 is shifted in the tube axis direction, and the anticorrosion ring 3 outside the above-described range. Excess portions in the first resin body 5 are cut out. In addition, it does not wait for completion of the cutting of the surplus part of the 1st resin body 5 of the anticorrosion ring 3 within the range covered with the cover member 50, and the cover member 50 is divided several times while being shifted in the tube axis direction. You may cut off the excess part in the 1st resin body 5 of the anti-corrosion ring 3 in the range.

  When using the processing means 13B in the embodiment described above, the inner peripheral surface 2b of the fluid pipe is covered and protected by the cover member 50, and therefore the inner peripheral surface 2b of the fluid pipe when the surplus portion of the anticorrosion portion in the anticorrosion ring 3 is cut off. Will not be scratched.

  Further, the cutter part 51 includes a guide part 56 that does not have the blades 53 at the tip part, and the guide part 56 is brought into contact with the inner peripheral surface of the cover member 50 to perform a cutting operation. The blunting of the blades 53 and 53 due to contact with 50 can be prevented.

  The processing apparatus 1C includes a cutter 49 as a processing unit and a separate cover member 50 as a guide unit. However, the present invention is not limited to this, and a blade as in the modification shown in FIG. The guide part 560 that does not have 53, 53 is formed in a shape that protrudes to the outer diameter side, so that the guide part 560 may be guided to the fluid pipe inner peripheral surface 2b. With a simple structure in which a separate cover member 50 is not prepared, the excess portion of the first resin body 5 of the anticorrosion ring 3 can be excised without damaging the inner peripheral surface 2b of the fluid pipe.

  Next, a processing apparatus according to Embodiment 5 will be described with reference to FIG. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted.

  As shown in FIG. 16, the processing apparatus 1D includes a cutter unit 51D as processing means including blades 53D and 53D as processing units, and a gripping unit 52D.

  Further, a bent piece 55D protruding to the outer diameter side is formed on the rear side of the cutter portion 51D, and this bent piece 55D comes into contact with the end portion 8a of the anticorrosion ring 3 in the tube axis direction so A first abutting portion 57 that can restrict insertion is provided, and a second abutting portion 58 that bends at a substantially right angle forward from the end of the first abutting portion 57 is provided. The ring 3 comes into contact with the outer diameter side end 3a.

  Since the first contact portion 57 in the bent piece 55D protrudes from the cutter portion 51D so as to be inclined slightly rearward from the right angle, the second contact portion 58 and the blades 53D and 53D are gradually separated toward the tip. It is supposed to be. Therefore, when the anticorrosion part of the anticorrosion ring 3 protruding from the inner peripheral surface 2b of the fluid pipe 2 is cut using the processing apparatus 1D, the first abutment part 57 comes into contact with the pipe axial direction end part 8a of the anticorrosion ring 3. And since the 2nd contact part 58 contact | abuts to the outer diameter side edge part 3a of the anticorrosion ring 3, the blade 53D and 53D will be in the state which the front-end | tip inclines in an inner diameter direction.

  Therefore, at the time of excision of the anticorrosion part of the anticorrosion ring 3, the blades 53D and 53D do not come into contact with the inner peripheral surface 2b of the fluid pipe and there is no risk of damage, and the taper angle of the cut surface due to elastic deformation of the first resin body 5 The cross section of the first resin body 5 in the anticorrosion ring 3 can be made parallel to the fluid pipe inner peripheral surface 2b.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in all the embodiments described above, the case where the first resin body 5 in the anticorrosion ring 3 protrudes from the inner peripheral surface 2b of the fluid pipe 2 has been described as an example. Depending on the type of the anti-corrosion ring, the surplus portion of the second resin body 6 that is harder than the first resin body 5 may be cut out, or the anti-corrosion ring having a configuration other than the anti-corrosion ring exemplified in the present embodiment. It goes without saying that cutting and cutting can be performed.

  Further, for example, in the above-described embodiment, a processing device having a blade part or a cutter is shown as a processing part for processing the surplus part in the anticorrosion part of the anticorrosion ring. However, the present invention is not limited thereto, and for example, the surplus part is processed. A wire that is a small-diameter wire, a hot wire that is heated to high heat, or a laser irradiation device that irradiates a surplus portion with a laser may be applied as the processing portion.

DESCRIPTION OF SYMBOLS 1 Processing apparatus 1A, 1B Processing apparatus 1C, 1D Processing apparatus 2 Fluid pipe 2a Pipe end surface 2b Fluid pipe inner peripheral surface 2c Fluid pipe outer peripheral surface 3 Corrosion prevention ring 5 1st resin body 8a Pipe axial direction end 9 Processing apparatus base 9A Processing apparatus Base 10 First contact portion (guide means)
11 Second contact portion 12 Third contact portion 13 Processing means 13A, 13B Processing means 14, 15 Handle 24, 24 Long hole 25 Rectangular tube 26 Cutter (Processing portion)
27 Adjustment screw (front and rear adjustment means)
33 blade (machined part)
33A blade (machined part)
35 Auxiliary roller 36 Reference hole 37 Long hole (adjustment means)
39 Screw (Adjustment means)
40 Cutter base (working part)
41 Blade part 43 Centering member (guide means)
43a Centering member shaft hole (guide means)
44 Strut 杆 45 杆 part (processing means)
45a ridge protrusion 46 bent ridge (processing means)
46a long hole (adjustment means)
47 Fixing screws (adjustment means)
49 Cutter (processing means)
50 Cover member (guide means)
51D Cutter unit (processing means)
53, 53 Blade (working part)
56 Guide (guide means)
58 Second contact portion (guide means)
560 Guide section (guide means)

Claims (3)

A processing device capable of cutting or cutting an excess portion in a corrosion prevention portion of a corrosion prevention ring attached to a pipe end portion of a cut fluid pipe,
Guide means guided in a circumferential shape with the inner peripheral surface of the fluid pipe located in the vicinity of the pipe end of the fluid pipe as a movement reference plane, and supported by the guide means, with guidance in the guide means, And a processing unit having a processing part capable of cutting or cutting an excess portion of the anticorrosion part protruding in the inner diameter direction from the inner peripheral surface of the fluid pipe.   The processing apparatus according to claim 1, wherein an adjustment unit capable of adjusting a radial distance between a processing unit of the processing unit and a movement reference surface of the guide unit is provided.   The processing apparatus according to claim 1, wherein the processing unit includes a front-rear adjustment unit capable of moving and adjusting the processing unit in a tube axis direction.

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