JP6157930B2 - 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 used after being cut in order to adjust the length of the fluid pipe to be used at the time of use such as piping work. Therefore, corrosion will occur on the end face of the pipe that has been cut due to long-term use of the pipe. Therefore, after the fluid pipe is cut, an anticorrosion ring having an attachment part for fitting the outer peripheral part of the end part of the fluid pipe and an anticorrosion part contacting the pipe end face of the fluid pipe is attached to the outer peripheral surface of the end part of the fluid pipe. In general, the anticorrosion treatment of the pipe end surface is performed.

  However, since there are allowable dimensional differences in the inner diameter and outer diameter dimensions of the fluid pipes that are subject to anticorrosion even if they are similar standards, for example, when the inner diameter dimension of the target fluid pipe is a large diameter, The inner diameter side end of the anticorrosion part protrudes to the inside of the fluid pipe, and the anticorrosion ring is caused by the pressure of the fluid passing through the fluid pipe, the washing pipe using a washing pipe pig, etc. There was a risk of separation from the end face of the tube. 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, since the excess portion of the rust preventive cap shown in Patent Document 1 is cut using a cutter or the like, if the adhesive material and the flange portion of the rust preventive cap are to be accurately matched to the inner diameter of the fluid pipe, The surface will be scratched. For this reason, even if cutting is performed so as not to damage the inner surface of the fluid pipe by paying sufficient attention to the inclination angle of the cutter, the angle of the cutter changes sequentially due to human manual work, and the cutting edge of the cutter is prevented. There was a consideration that the cutting approach angle with respect to the surplus portion of the rust cap was not constant, and the surplus portion was left uncut, and the cut surface after cutting became a distorted shape.

  The present invention has been made paying attention to such problems, and in a state where the anticorrosion ring is attached to the fluid pipe, there is a problem that the anticorrosion part of the anticorrosion ring protrudes more than a certain amount inside the inner peripheral surface of the fluid pipe. It is an object of the present invention to provide a processing apparatus capable of accurately cutting or cutting a surplus portion that occurs without causing uncut portions.

In order to solve the above problems, the processing apparatus of the present invention provides:
A processing apparatus capable of cutting or cutting an excess portion projecting to a tube inner diameter side of a front covering portion covering a tube end surface side in a corrosion prevention ring attached to a tube end portion of a cut fluid pipe,
Continuously cutting or cutting the surplus portion protruding to the inner diameter side of the front covering portion in the circumferential direction while maintaining a predetermined inclination angle with respect to the tangent of the inner end of the pipe end of the cut fluid pipe A processing blade to
A first guide portion that is in contact with an outer peripheral portion of a pipe end portion of the cut fluid pipe or an outer peripheral portion of the anticorrosion ring at the time of continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade; equipped with a,
The first guide part includes an adjusting means capable of adjusting a distance from the processing blade .
According to this feature, since the first guide portion is brought into contact with the outer peripheral portion of the pipe end portion of the cut fluid pipe or the outer peripheral portion of the anticorrosion ring during continuous cutting or cutting by the processing blade, the processing blade The predetermined inclination angle is kept constant, the incision angle with respect to the surplus portion of the anticorrosion ring is constant, and the surplus portion in the front covering portion of the anticorrosion ring can be accurately cut or cut to be removed. it can.
In addition, according to this feature, by adjusting the distance between the first guide portion and the machining blade by the adjusting means, the cutting-in approach angle of the machining blade to each surplus portion is constant with respect to the anticorrosion rings having different diameters. Can be.

The first guide portion abuts on the outer peripheral portion of the front covering portion on the front side in the advancing direction of the processing blade sandwiching the tube wall during continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade. It is characterized by being.
According to this feature, the predetermined inclination angle of the machining blade is maintained so that the corrosion prevention ring and the pipe wall of the fluid pipe are sandwiched between the cutting edge of the machining blade and the first guide portion, so that the cutting intrusion into the surplus portion of the corrosion prevention ring It is easy to keep the angle constant.

The first guide part is formed in a convex curved surface shape.
According to this feature, since the first guide part is formed in a convex curved surface shape, the processing apparatus can be smoothly moved with respect to the pipe end part of the fluid pipe or the outer peripheral part of the anticorrosion ring.

The first guide part is constituted by a rotatable roller member.
According to this feature, since the roller member comes into contact with the front covering portion, the processing apparatus can be moved smoothly.

It is further characterized by further comprising a second guide portion that comes into contact with the front covering portion of the anticorrosion ring during continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade.
According to this feature, the first guide portion is brought into contact with the pipe end portion of the fluid pipe or the outer peripheral portion of the anticorrosion ring, and the second guide portion having a three-dimensional direction different from that is in contact with the front covering portion. Therefore, the distance between the cutting edge of the processing blade and the inner peripheral surface of the pipe end is kept constant during continuous cutting or cutting with the predetermined inclination angle by the processing blade, and the front cover of the anticorrosion ring The excess part in the part can be removed by cutting or cutting accurately.

A tip member is provided at the tip of the processing blade so as to sandwich the processing blade, and the side surface of the tip member is in contact with the fluid during continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade. It is characterized by being in contact with the inner peripheral surface of the tube.
According to this feature, since the tip member is inclined in accordance with the predetermined inclination at the time of cutting or cutting of the processing blade, not only can the processing blade be reliably guided, but also the tip of the processing blade is covered with the tip member, so that the fluid The possibility of damaging the inner peripheral surface of the tube can be avoided.

It is a side view of the processing apparatus in Example 1, and a side sectional view showing a fluid pipe. It is a disassembled perspective view which shows a processing apparatus. It is a sectional side view which shows the state which measured the protrusion amount of the excess part. It is a perspective view which shows the state which attached the processing apparatus with respect to the anticorrosion ring. (A) is a rear cross-sectional view showing a state in which the machining blade is cut by the thickness of the surplus portion with the angle α set to the tube axis direction side of the fluid tube with respect to the inner tangent of the tube end of the fluid tube (B) is a rear cross-sectional view showing a state in which the cutting edge is adjusted to an inclination angle inclined by a predetermined angle β with respect to the tangent to the inner periphery of the pipe end of the fluid pipe. It is a back surface sectional view showing the state where a surplus portion in Example 1 was cut a predetermined distance. (A) is a front view which shows a mode that a surplus part is cut | disconnected clockwise, (b) is a front view which shows a mode that a surplus part is cut | disconnected counterclockwise. It is a perspective view which shows the modification of a 1st guide member. (A) is a side view which shows the processing apparatus in Example 2, (b) is also a top view, (c) is also a front view. It is a back surface sectional view which shows the state which cut | disconnected the excess part for the predetermined distance with the processing apparatus in Example 2. FIG.

  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. Hereinafter, the left side of the screen in FIG. 1 will be described as the front 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, is formed in a substantially circular shape in cross section, and the inner peripheral surface 2b is powder-coated. Or it is coat | covered with the 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.

  As shown in FIG. 1, the anticorrosion ring 3 includes an anticorrosion adhesive layer 4 that is attached to the pipe end surface 2 a of the fluid pipe 2 over the entire circumference, and a first resin that presses the anticorrosion adhesive layer 4 against the pipe end surface 2 a. A body 5, and a second resin body 6 having a fitting portion 7 that is fitted on the outer periphery of the fluid pipe 2 and a covering portion that extends from the end portion of the fitting portion 7 in the inner diameter direction and covers the pipe end surface 2 a. Yes.

  The second resin body 6 is formed so as to form a ring shape when viewed from the front by a synthetic resin material having elasticity such as polypropylene, and the first resin body 5 formed of an elastomer or the like is molded in two colors on the covering portion. Yes. Moreover, the outer diameter side end part of the coating | coated part is equipped with the protrusion 8a protruded toward the front side.

  Further, the inner diameter side end of the first resin body 5 protrudes from the inner diameter direction end of the front covering portion 8 in a natural state, and is smaller than or equal to the inner diameter of any metal portion in the fluid pipe of the same standard. Since it is designed to have a diameter, it can be commonly attached to various fluid pipes having different inner diameters within a tolerance range permitted within the same standard, and corrosion protection can be performed.

  Reference numeral 1 shown in FIG. 1 indicates that the anticorrosion ring 3 protrudes inward from the inner peripheral surface 2b of the fluid pipe 2 in a state where the attachment of the anticorrosion ring 3 to the fluid pipe 2 using the anticorrosion adhesive layer 4 is completed. The processing apparatus which can cut | disconnect the excess part 3a of the front surface covering part 8 which consists of at least one of 1 resin body 5 and a coating | coated part is shown. The surplus portion 3a is a portion that protrudes inward from the inner peripheral surface 2b of the fluid pipe 2 by a certain amount and causes a problem when the washing pipe pig or the like passes.

  As shown in FIGS. 1 and 2, the processing apparatus 1 includes a cover member 10 that is a base member of the processing apparatus 1, a backing plate member 11, a guide member 12, a processing blade 13, handles 14, 15, 16 and a lid member 23.

  As shown in FIG. 2, the cover member 10 is formed by notching a groove 10 a into which the machining blade 13 is fitted. On both sides of the cover member 10, there are two connection holes 10b, 10b,... That can be screwed with connection bolts 20, 20,. Each is provided (only one side is shown), and handle receiving portions 10d and 10d (only one side is shown) into which the handles 14 and 15 can be screwed are provided. Furthermore, window portions 10h and 10h communicating with the groove portion 10a are formed on both side surfaces of the cover member 10. Further, a total of four screw holes 10c, 10c are provided on the bottom surface of the cover member 10 apart in the longitudinal direction. Further, a handle receiving portion 10d (not shown) into which the handle 16 can be screwed is provided on the upper surface of the cover member 10.

  The processing blade 13 has a cutting edge portion 13a formed in a substantially arc shape, and the base members 18 and 18 'are clamped together by bolts 21 while being sandwiched between the divided base members 18 and 18' to form a unit. Has been.

  The processing blade 13 is fitted to the groove 10a in a state of being fixed to the base members 18 and 18 ', and is further connected to bolt holes 18b, 18b, ... provided on the side surfaces of the base members 18 and 18', respectively. The connecting bolts 20, 20,... Are screwed through 10b,.

  The contact plate member 11 has substantially the same shape as the cover member 10 in a plan view, and a plurality of screw holes 11c, 11c,. The cover plate member 11 is screwed into the screw holes 11c, 11c,... And screw holes 10c, 10c,. It attaches so that attachment or detachment is possible so that the opening part of the groove part 10a may be plugged up.

  A long hole 11b formed along the longitudinal direction is provided on the front side of the backing plate member 11, and the cutting edge portion 13a of the processing blade 13 protrudes outside through the long hole 11b. Yes. Further, a groove portion 11d into which a part of the processing blade 13 is fitted is formed on the surface of the cover plate member 11 on the cover member 10 side, and the blade edge portion 13a protrudes outward by the depth of the groove portion 11d. You can earn length.

  Further, as will be described in detail later, the bottom surface 11a of the contact plate member 11 functions as a second guide portion that comes into contact with the front cover portion 8 when the surplus portion of the anticorrosion ring is excised (FIG. 3). reference).

  The guide member 12 has a substantially H shape in which a erection part 12c is erected on semicircular rod-like parts 12b and 12b 'arranged in parallel. The convex curved surfaces of the rod-shaped portions 12b and 12b ′ are directed outward, and the convex curved surfaces 12a and 12a ′ of the rod-shaped portions 12b and 12b ′ are anticorrosive when the surplus portion of the anticorrosion ring 3 is excised. It functions as a first guide portion that comes into contact with the mounting portion 7 of the ring 3 (see FIGS. 3 and 4).

  The guide member 12 is arranged so that the end portions 12d and 12d ′ of the rod-like portions 12b and 12b ′ sandwich the short direction of the cover member 10, and bolts 22 and 12e ′ are respectively provided in screw holes 12e and 12e ′. The screw 22 is screwed in, and the front ends of the bolts 22 and 22 are pressed against the side surface of the cover member 10 in the short-side direction. Since the fixing method is as described above, the position of the guide member 12 can be adjusted in the longitudinal direction of the cover member 10 by loosening the bolts 22 and 22.

  The handles 14, 15 and 16 are provided with screw portions 14a, 15a and 16a at the mounting end portions, and the screw portions 14a, 15a and 16a are screwed into the handle receiving portions 10d, 10d and 10d, respectively. Thus, the cover member 10 is fixed.

  The lid member 23 is provided in a substantially U shape in sectional view so as to cover the blade edge portion 13a protruding outward through the elongated hole 11b of the backing plate member 11, and has substantially the same shape as the backing plate member 11 in plan view. Is formed. The lid member 23 includes claw members 24 and 24 (only one of which is shown) that are engaged with the window portions 10 h and 10 h of the cover member 10, and is detachably attached to the cover member 10 by the claw members 24 and 24. .

  The lid member 23 has a measuring member 25 that measures the amount of protrusion of the surplus portion of the anticorrosion ring 3 in the longitudinal direction, and the measuring member 25 extends from the lid member 23 to the front. And a projection-shaped measuring portion 25b that protrudes from the upper end portion on the front side of the extending portion 25a by a predetermined length.

  In the processing apparatus 1 configured as described above, the longitudinal direction of the contact plate member 11 and the longitudinal direction of the processing blade 13 are directed in the same direction, and the rod-shaped portions 12b and 12b ′ are the longitudinal direction of the contact plate member 11. The direction is orthogonal to the direction, and both sides of the processing blade 13 are symmetrical.

  Next, a method for cutting off the inner diameter side surplus portion 3a of the anticorrosion ring 3 by the processing apparatus 1 will be described with reference to FIGS. Before the cutting step, first, as shown in FIG. 3, the surplus portion 3 a of the anticorrosion ring 3 is aligned with the measurement portion 25 b of the measurement member 25 from the inner diameter side, and the surplus portion 3 a of the anticorrosion ring 3 is cut. Decide whether or not. At this time, when the surplus portion 3a of the anticorrosion ring 3 is longer than the predetermined length from which the measurement unit 25b protrudes, the cutting process of the surplus portion 3a of the anticorrosion ring 3 is performed.

  If it is determined that the surplus portion 3a of the anticorrosion ring 3 is to be excised, the fluid pipe 2 to which the anticorrosion ring 3 is attached is attached to the protective member 19 formed in a substantially C shape when viewed from the front before actually moving to the excision process. Is fitted on the inner peripheral surface 2b in the vicinity of the tube end (see FIG. 3). The protective member 19 is formed of a thin metal plate and is fitted into the inner peripheral surface 2b of the fluid pipe 2 by its own elastic restoring force. For example, the protective member 19 is formed of a hard synthetic resin or the like. May be. According to this, the inner peripheral surface 2 b of the fluid pipe 2 is protected by the protective member 19, and the cutting edge portion 13 a is the inner peripheral surface 2 b of the fluid pipe 2 when the inner diameter side surplus portion 3 a of the anticorrosion ring 3 is cut by the processing device 1. Can be prevented.

  As shown in FIG. 4 and FIG. 5 (a), as the cutting process, first, the bottom surface 11 a of the contact plate member 11 is brought into contact with the protrusion 8 a of the front covering portion 8, and the pipe end portion of the fluid pipe 2 is formed. The blade edge portion 13a is cut by the thickness of the surplus portion 3a of the anticorrosion ring 3 in a state where the blade edge portion 13a is set to the tube axis direction side of the fluid tube 2 by an angle α with respect to the tangent line on the inner periphery. At this time, the cutting step may be completed by bringing the cutting edge portion 13a of the processing blade 13 into contact.

  Subsequently, as shown in FIG. 4 and FIG. 5 (b), when the cutting edge portion 13 a is cut to a depth that is the bottom of the surplus portion 3 a, the stick-shaped portion convex curved surface 12 a is attached to the anticorrosion ring 3 attachment portion. 7 is adjusted so that the blade edge portion 13a is inclined at a predetermined angle β with respect to the tangent of the inner periphery of the pipe end of the fluid pipe 2.

  Thus, since the rod-like convex curved surface 12a is brought into contact with the inner and outer peripheral shape portions of the pipe end portion of the fluid pipe 2 constituted by the outer peripheral surface of the attachment portion 7 of the anticorrosion ring 3, a predetermined inclination angle is constant. Thus, during continuous cutting or cutting while maintaining a predetermined inclination angle by the working blade 13, a constant incision angle with respect to the surplus portion 3 a of the anticorrosion ring 3 is maintained. That is, the processing blade 13 can continuously cut and cut the surplus portion 3a at the same depth. Note that the cutting and cutting of the surplus portion 3a of the anticorrosion ring 3 by the processing blade 13 are not necessarily performed continuously in the circumferential direction, and may be performed intermittently.

  Further, the bar-shaped convex curved surface 12 a is brought into contact with the outer peripheral surface of the mounting portion 7 of the anticorrosion ring 3, and the bottom surface 11 a of the backing plate member 11 having a three-dimensional direction different from that is the protrusion 8 a in the front covering portion 8. Therefore, at the time of continuous cutting or cutting in the circumferential direction of the fluid pipe 2 while maintaining a predetermined inclination angle by the processing blade 13, the cutting edge portion 13a of the processing blade 13 and the pipe end portion inner peripheral surface 2b The distance is kept constant. The pipe end portion of the fluid pipe 2 refers to a portion near the pipe end face (cut face) including at least the pipe end face (cut face) of the fluid pipe and the mounting portion of the anticorrosion ring 3.

  The guide member 12 having the rod-shaped convex curved surface 12a can be adjusted in position in the longitudinal direction of the cover member 10 by loosening the bolts 22 and 22 as described above. The distance from the processing blade 13 is adjusted by changing the position appropriately according to the outer diameter and inner diameter, and the thickness of the surplus portion 3a to be cut off in the anticorrosion ring 3, and the inner peripheral surface of the anticorrosion ring 3 in the processing blade 13 is adjusted. The cutting process can be started after setting the same inclination angle to the tangent.

  As shown in FIG. 6, the processing apparatus 1 is moved a predetermined distance counterclockwise in the rear view, and the excess portion 3a is continuously cut in the circumferential direction. At this time, as described above, the rod-shaped convex curved surface 12a is in contact with the outer peripheral surface of the attachment portion 7 of the anticorrosion ring 3, and the cutting and cutting angles of the surplus portion 3a of the anticorrosion ring 3 by the processing blade 13 are maintained, In addition, since the bottom surface 11a of the contact plate member 11 is in contact with the ridge 8a of the front covering portion 8, and the machining blade 13 is continuously cut or cut while being kept substantially parallel to the fluid pipe inner peripheral surface 2b. The excess portion 3a of the anticorrosion ring 3 can be removed by cutting or cutting accurately.

  Further, at the time of cutting or cutting the surplus portion 3a, the cutting edge portion 13a abuts on the inner peripheral surface 19a of the protective member 19 fitted in the fluid pipe inner peripheral surface 2b, and the rod-like convex curved surface 12a is more than the cutting edge portion 13a. The processing device 1 is in contact with the mounting portion 7 on the front side in the traveling direction. Therefore, since the processing apparatus 1 maintains a predetermined inclination angle with respect to the tangent of the inner peripheral surface of the anticorrosion ring 3 such that the anticorrosion ring 3 and the fluid pipe 2 are sandwiched between the cutting edge portion 13a and the rod-shaped convex surface 12a, It is easy to keep the cut-in approach angle with respect to the surplus portion 3a of the anticorrosion ring 3 constant.

  Further, the bar-shaped convex curved surface 12a abuts the mounting portion 7 on the front side in the traveling direction of the processing apparatus 1 with respect to the cutting edge portion 13a when cutting or cutting the surplus portion 3a. Is shifted in the circumferential direction across the tube wall of the fluid pipe 2, and the longitudinal direction of the bottom surface 11 a of the contact plate member 11 is inclined at a predetermined angle without being orthogonal to the tube axis of the fluid pipe 2. According to this, since the contact area between the bottom surface 11a of the backing plate member 11 and the front covering portion 8 can be ensured long in the circumferential direction, the bottom surface 11a of the backing plate member 11 is the protrusion 8a of the front covering portion 8. It becomes easy to stabilize above, and it is easy to keep the distance between the cutting edge 13a of the processing blade 13 and the inner peripheral surface 2b of the fluid pipe 2 constant.

  Further, since the bar-shaped convex curved surface 12a has a convex curved surface shape, the rod-shaped convex curved surface 12a is in line contact with the outer peripheral surface of the mounting portion 7 when the processing apparatus 1 is moved. The contact resistance between the surface and the convex curved surface 12a of the rod-shaped part is low, and the machining device 1 can be smoothly moved to cut or cut the surplus portion 3a.

  Furthermore, as described above, since the processing apparatus 1 has a symmetrical shape on both sides with the processing blade 13 as the center, the anticorrosion ring 3 is formed from the lower end of the anticorrosion ring 3 as shown in FIG. Then, the surplus portion 3a of the anticorrosion ring 3 is cut from the lower end portion of the anticorrosion ring 3 by changing the direction of the processing device 1 as shown in FIG. Can be continuously cut counterclockwise. In addition, it is not limited to cutting the surplus portion 3a of the anticorrosion ring 3 in two steps as described above, but may be cut continuously once in only one direction clockwise or counterclockwise, You may cut | disconnect in multiple times of 3 times or more.

  Further, in the present embodiment, the cutting step is performed by cutting the processing blade 13 to the depth of the bottom of the surplus portion 3a of the anticorrosion ring 3 in a state where the processing blade 13 is set at an angle α toward the tube axis direction side of the fluid pipe 2, and thereafter processing. The inclination angle of the blade 13 with respect to the tangent to the inner circumferential surface of the anticorrosion ring 3 is changed to an inclination angle inclined by a predetermined angle β, and the excess portion 3a can be excised at a time without separating the processing device 1 from the anticorrosion ring 3. However, the present invention is not limited to this, and the first turn makes the cutting angle of the machining blade 13 shallower by increasing the distance between the convex curved surface 12a of the rod-like part and the machining blade 13, and the convex part of the rod-like part is made in the second and subsequent rounds. The distance between the curved surface 12a and the processing blade 13 may be gradually narrowed so that the cutting angle of the processing blade 13 is deepened, and the surplus portion 3a may be gradually cut in a plurality of rounds.

  In addition, since the processing blade 13 can be replaced from the base members 18 and 18 ′, if a problem occurs in the blade tip portion 13 a, it is only necessary to replace the processing blade 13, and the cost can be reduced. In addition, when a malfunction occurs in the rod-shaped convex curved surfaces 12a, 12a 'or the bottom surface 11a of the contact plate member 11, only the contact plate member 11 or the guide member 12 can be replaced.

  In this embodiment, the front cover portion 8 of the anticorrosion ring 3 is provided with the ridges 8a, so that the bottom surface 11a of the backing plate member 11 is in contact with the ridges 8a. In some cases, the protrusion 8 a is not provided, and in this case, the bottom surface 11 a of the contact plate member 11 is brought into contact with the front surface of the front covering portion 8. Further, for example, a protrusion that abuts only on the front covering portion 8 while avoiding the protrusion 8a may be provided on the bottom surface 11a side of the backing plate member 11.

  As a modified example of the first guide portion, as shown in FIG. 8, for example, there is a roller member 121 a rotatably provided on the guide member 121. The roller member 121a is pivotally supported in a recess 121b provided in the guide member 121 by a rotating shaft 121c. Thereby, since the roller member 121a contacts the mounting portion 7 of the anticorrosion ring 3 described above, the processing apparatus 1 'can be moved smoothly.

  Next, a processing apparatus according to the second embodiment will be described with reference to FIGS. The description of the same configuration as that of the above embodiment is omitted.

  As shown in FIG. 9, in the processing apparatus 100, the tip member 191 is fixed so as to sandwich the tip of the blade edge portion 13a from both sides, and the side surfaces 191a and 191a ′ of the tip member 191 have a convex curved surface shape. ing.

  As shown in FIG. 10, when the processing device 100 is moved a predetermined distance counterclockwise in the rear view and the excess portion 3a is continuously cut in the circumferential direction, as in the above embodiment, a rod-like shape is used. The convex curved surface 12 a is brought into contact with the mounting portion 7, the bottom surface 11 a of the contact plate member 11 is brought into contact with the protrusion 8 a of the front covering portion 8 described above, and the side surface 191 a of the tip member 191 is connected to the inner periphery of the fluid pipe 2. It abuts on the surface 2b. As a result, the cutting edge 13a is always separated from the tube end inner peripheral surface 2b by the thickness of the tip member 191, so that the pipe end inner peripheral surface 2b is formed by the processing blade 13 without using the protective member 19 as described above. Will not be hurt.

  As described above, the side surfaces 121a and 121a ′ of the tip member 191 provided so as to sandwich the processing blade 13 at the tip of the processing blade 13 are configured so that the tip member 191 is cut or cut by the processing blade 13. In addition to being able to guide the machining blade 13 reliably because it is inclined with the predetermined inclination, the tip of the machining blade 13 is covered with the tip member 191, so that the possibility of damaging the inner peripheral surface 2b of the fluid pipe 2 can be avoided.

  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 the above-described embodiment, the aspect in which the second guide portion abuts on the front covering portion has been described. However, the present invention is not limited to this. For example, the second guide portion may be separated from the front covering portion.

DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Fluid pipe 2b Inner peripheral surface 3 Anticorrosion ring 3a Excess part 7 Attachment part 8 Front surface covering part 8a Projection 10 Cover member 11 Baffle plate member 11a Bottom face (2nd guide part)
12 Guide members 12a, 12a 'Convex curved surface of rod-shaped part (first guide part)
13 Processing Blade 13a Cutting Edges 14, 15, 16 Handle 19 Protective Member 23 Lid Member 25 Measuring Member 100 Processing Device 121 Guide Member 121a Roller Member (First Guide Part)
191 Tip member

Claims (6)

A processing apparatus capable of cutting or cutting an excess portion projecting to a tube inner diameter side of a front covering portion covering a tube end surface side in a corrosion prevention ring attached to a tube end portion of a cut fluid pipe,
Continuously cutting or cutting the surplus portion protruding to the inner diameter side of the front covering portion in the circumferential direction while maintaining a predetermined inclination angle with respect to the tangent of the inner end of the pipe end of the cut fluid pipe A processing blade to
A first guide portion that is in contact with an outer peripheral portion of a pipe end portion of the cut fluid pipe or an outer peripheral portion of the anticorrosion ring at the time of continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade; equipped with a,
The said 1st guide part is equipped with the adjustment means which can adjust the distance with the said process blade, The processing apparatus characterized by the above-mentioned.   The first guide portion abuts on the outer peripheral portion of the front covering portion on the front side in the advancing direction of the processing blade sandwiching the tube wall during continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade. The processing apparatus according to claim 1, wherein: The first guide portion, the processing apparatus according to claim 1 or 2, characterized in that it is formed in a convex curved shape. The first guide portion, the processing apparatus according to any one of claims 1, characterized in that it is constituted by a rotatable roller member 3. Wherein when said predetermined tilt angle the held continuously cutting or cleavage by processing blade, according to claim 1 to 4, further comprising a second guide portion which is brought into contact with the front cover portion of the anticorrosion rings The processing apparatus in any one. A tip member is provided at the tip of the processing blade so as to sandwich the processing blade, and the side surface of the tip member is in contact with the fluid during continuous cutting or cutting while maintaining the predetermined inclination angle by the processing blade. processing apparatus according to any one of claims 1 to 5, characterized in that it is contact with the inner circumferential surface of the pipe.

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