JPH0644642Y2 - Peripheral scraping device for FRP composite pipe - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a portable device capable of precisely scraping off the FRP layer at the end of a FRP composite pipe.

(Prior art) FRP with a liquid contact layer made of thermoplastic resin etc. on the inner layer
When joining a pipe and a joint in a composite pipe material, since the liquid contact layer must be continuous, it is necessary to remove the FRP layer at the pipe end to expose the core pipe portion of the liquid contact layer. Conventionally, a lathe has been used to remove this FRP layer. Also,
It was described in Japanese Utility Model Application Laid-Open No. 62-106709 as a portable type. Further, as a device for chamfering a pipe end, there is one described in Japanese Utility Model Laid-Open No. 56-18192. Further, as a device for cutting a groove or the like on the outer peripheral surface of the tubular body, there is one described in Japanese Utility Model Publication No. 58-48103.

The method of removing the FRP tank with a lathe is to grasp the FRP composite pipe with a chuck and cut it while feeding a cutting tool.

The one disclosed in Japanese Utility Model Laid-Open No. 62-106709 is that an electric plane equipped with a diamond blade is supported on a column of a main frame so as to be able to move up and down, and a roller for positioning below the electric plane is provided on the main frame. In addition to providing a main stand, a sub stand provided separately from the main stand is provided with a roller for placing the other end of the FRP composite pipe.When using this, after placing the composite pipe on both rollers, The electric plane is lowered to scrape off the FRP pipe at the pipe end.

The one described in Japanese Utility Model Laid-Open No. 56-18192 discloses a roll for horizontally supporting the tubular body, a driving roll for rotating the tubular body, and a tubular body for automatically rotating the tubular body in a fixed position. It is equipped with an end-positioning roll that regulates the amount of drive, a clamp roll that presses the tubular body, and a swivel arm that is rotated in the vertical direction and that has a rotary chamfering blade. The end face of the pipe is chamfered by rotating the swivel arm and pressing the rotary chamfering blade against the end of the pipe.

The one described in Japanese Utility Model Publication No. 58-48103 is composed of an electric plane equipped with a plate body having a curved guide edge on a side portion, and a guide tube provided with a guide groove in the circumferential direction of the outer periphery. After the guide cylinder is attached to the outer circumference of the pipe body, the curved guide edge of the plate body is fitted into the guide groove, and the groove or the like is cut while rotating the electric plane.

(Problems to be Solved by the Invention) However, this conventional device has the following problems.

B. With the method of removing the FRP layer with a lathe, the finished surface is smooth and the dimensions are accurately finished, but it is an in-house production at a factory far from the site and it is difficult to make detailed adjustments according to the site situation. In addition, a technician who operates the lathe is additionally required, which increases the cost.

B. The one disclosed in Japanese Utility Model Publication No. 62-106709 processes the FRP composite pipe in the state described on the roller. Therefore, in order to make the composite pipe parallel to the diamond blade, the main mount and the sub mount are installed at the same level. It has to be done and it is very troublesome to do this at the plumbing site. Further, since the composite pipe is simply placed on the roller, it is difficult to rotate the composite pipe without moving the pipe axis while the high-speed diamond blade is applied. In addition, the accuracy of the finished surface (roundness, roughness, parallelism, etc.) cannot be ensured due to the deviation of the pipe axis.

C. The one described in Japanese Utility Model Publication No. Sho 56-18192 is large in size and cannot be easily transported and used. Also,
The device for stabilizing the composite pipe is complicated and the cost is considerably increased.

D. The one disclosed in Japanese Utility Model Publication No. 58-48103 requires a clearance between the guide edge and the guide groove so that the guide edge can move smoothly. When this method is used for cutting the pipe end, there is no contact part with the outer surface of the electric plane on one side, and this clearance prevents the electric plane from maintaining parallelism with the pipe axis. It is impossible to scrape off the FRP layer at the pipe end in parallel with the pipe axis. In addition, since the chips are clogged with the guide groove to hinder the movement of the electric plane, smooth work cannot be performed.

The present invention was made in order to solve this conventional problem, and its purpose is to fix the F end of the FRP composite pipe at the end.
An object of the present invention is to provide a light-weight and easy-to-carry peripheral shaving device for FRP composite pipes, which can scrape off the RP layer with high precision and can be finished with the same precision by anyone without skill.

(Means for Solving the Problems) As means for achieving the above object, in the FRP compound pipe outer peripheral shaving device of the present invention, an electric plane having a rotary blade; and a front end portion of the electric plane vertically pivoted. A mounting frame that freely lifts and lowers a shaft support that freely supports; if a plurality of sets are provided as a set, it is selected according to the size of the FRP composite pipe and the electric plane of the electric frame that is supported by the mounting frame is selected. A pipe fixing drum which is arranged parallel to the rotary blade, is rotatably supported by a mounting frame at a position below the rotary blade, and presses and fixes the inner wall of the FRP composite pipe inserted outside; Fine adjustment means for finely adjusting the rotating position of the electric plane by mounting the rear end portion of the electric plane.

(Operation) Since the FRP composite pipe outer peripheral shaving device of the present invention is configured as described above, first, the pipe fixing drum suitable for the size of the composite pipe to be processed is selected and attached to the mounting frame. Then, the composite pipe is inserted into the pipe fixing drum and the inner wall is pressed and fixed. As a result, the composite pipe is rotatably fixed at a position below the electric plane in parallel with the rotary blade of the electric plane. Next, after raising and lowering the shaft support part and setting the fine adjustment means to the highest position, the rear end of the plane is lowered while driving the electric plane to slowly rotate the composite pipe, and the fine adjustment means is moved to the rear end of the electric plane. Shave until the part is placed.
Check the outer diameter of the shaved pipe and repeat the above operations while adjusting the fine adjustment means until the desired outer diameter is reached.

In this shaving process, since the pipe end is fixed to the mounting frame, the shaft center can be finished in parallel with the pipe axis, and the entire circumference can be smoothed without leaving any residue.

Next, when continuously processing composite pipes of the same size,
If the final adjustment position of the fine adjustment means confirmed in the first scraping work is fixed and used, a large number of composite pipes can be continuously processed with the same accuracy even if scraping is performed all at once.

Next, when processing composite pipes of different sizes, first,
After selecting a pipe fixing drum of a size suitable for this composite pipe, mounting it on the mounting frame and adjusting the shaft support, the same work as described above may be performed.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

First, the configuration of the embodiment will be described.

The outer peripheral scraping apparatus A of the FRP composite pipe of this embodiment is the first
As shown in FIG. 6 to FIG. 6, the electric plane 1, the shaft support 2, the mounting frame 3, the pipe fixing drum 4, and the fine adjustment means 5 are the main components.

The electric plane 1 is for removing the FRP layer 60 of the FRP composite pipe 6 over the entire circumference of the pipe end, and a diamond rotary blade 10 formed so as to scrape off the FRP layer is provided in the middle of the frame 11. In addition, a through hole 12 is formed at the tip of the frame 11 in the same direction as the axial center of the diamond rotary blade 10. Further, reference numeral 13 in the drawing denotes an outlet for discharging the chips of the FRP layer, which is formed so as to be connectable to the inlet 14 of the cleaner or the like.

The shaft support 2 is for vertically rotating the electric plane 1 at a predetermined position, and a column 21 provided with a scale 20 indicating the size-specific set position of the composite pipe 6 over substantially the entire length, A support shaft for slidably inserting into a hole 22 formed horizontally at the tip of the column 21 and then inserting into the through hole 12 of the electric plane 1 to hold the electric plane 1 rotatably in the vertical direction. It is formed by 23. In the figure, 24 is a butterfly bolt that fixes the support shaft 23, and 25 is a support shaft.
Reference numeral 26 is a wing bolt for preventing the electric plane 1 attached to 23 from coming off, and 26 is a wing bolt for fixing the column 21 to a predetermined height and fixing it to the mounting frame 3. Also, a is for a composite pipe with a nominal diameter of 16 mm on the scale 20, b is for a nominal diameter of 20 mm, c is for a nominal diameter of 25 mm, d is for a nominal diameter of 30 mm, e is for a nominal diameter of 40 mm, f is for a nominal diameter of 50 mm,
g indicates the alignment position for the nominal diameter of 65 mm and h indicates the alignment position for the nominal diameter of 75 mm.

The mounting frame 3 is for arranging the electric plane 1, the shaft support 2, the pipe fixing drum 4, and the fine adjustment means 5 at predetermined positions, and is formed in a substantially square rod shape, and the tip end thereof has the upper side toward the center side. There is provided a through hole 30 that is inclined in such a direction that the pillar 21 of the shaft support portion 2 can be inserted vertically. Further, the shaft support portion 2 in which the support column 21 is inserted into the through hole 30 and attached to the attachment frame 3
When the electric plane 1 is attached to the spindle 23 of and is arranged substantially horizontally, a through hole is formed in a position slightly forward of the axis of the diamond rotary blade 10 in parallel with the axis, and the bearing 31 is provided in the through hole. It is set.

The pipe fixing drum 4 is selected according to the size of the composite pipe 6 from among a plurality of pipes provided as a set, and the composite pipe 6 is rotatably fixed at a predetermined position of the mounting frame 3. As shown in FIG. 2, a cylindrical body 40 having an outer diameter slightly smaller than the inner diameter of the composite pipe 6, a tip pressing member 41 inserted at the tip of the cylindrical body 40, and a rear end of the cylindrical body 40 are provided. A rear end presser 42 to be inserted and a long shaft which is inserted into the cylindrical body 40 and is fixed to the front end presser 41 and is also slidably inserted into the rear end presser 42.
An O-ring 45 mounted between 43, a flange portion 44 formed on the front end presser 41 and the rear end presser 42, and both side surfaces of the cylindrical body 40.
It is formed by. And this pipe fixed drum 4
Is a set of 8 types that match the inner diameters of composite pipes with different diameters. In FIG. 6, 4a denotes the outer diameter of the cylindrical body 40 of 15.5 mm.
For a composite pipe with a nominal diameter of 16 mm formed on 4b, the outer diameter is also 20
For composite pipe with a nominal diameter of 20 mm formed in mm, 4c has the same outer diameter
For composite pipe with a nominal diameter of 25 mm formed to 24.6 mm, 4d for composite pipe with a nominal diameter of 30 mm, also formed with an outer diameter of 30.6 mm, 4e for composite pipe with a nominal diameter of 40 mm, also formed with an outer diameter of 39.7 mm, 4f Similarly, for composite pipes with a nominal diameter of 50 mm, formed with an outer diameter of 50.7 mm,
4g shows a pipe fixing drum for a composite pipe with an outer diameter of 65mm and a nominal diameter of 65mm. 4h also shows a pipe fixing drum for a composite pipe with an outer diameter of 76.5mm and a nominal diameter of 75mm. Also, 46 in the figure
Is a stepped portion that regulates the insertion length of the composite pipe 6, and 47 is a screw portion that allows the pipe fixing drum to be replaced by screwing a nut 48 after inserting the long shaft 43 into the bearing 31.

The fine adjustment means 5 precisely adjusts the amount of electric plane 1 driven in while scraping off the FRP layer.
A shaft portion 50 rotatably supported on the rear end portion of the electric shaft 1 in parallel with the support shaft 23 and eccentrically provided on the shaft portion 50.
And an eccentric shaft portion 51 on which the rear end portion is placed. Reference numeral 52 in the drawing denotes a lever, which is fixed to the shaft portion 50. Also, 53 is a scale, and when the lever 52 is moved by one scale, the electric plane 1 moves 1 mm in the vertical direction, and at the 0 position (the scale 20 of the support column 21 changes the size of the attached composite pipe 6). It is set to a position where the diamond rotary blade 10 and the FRP layer start contacting each other (in the case where the position shown matches the upper surface of the mounting frame 3). The scale 53 is formed to have a machining accuracy of the order of 0.1 mm in combination with the fact that the pipe end does not rattle by finely adjusting the intermediate portion by forming a large scale interval. There is. 54 in the figure is the shaft
50 fixing nuts.

Next, the operation of this embodiment will be described.

Since this embodiment is constructed as described above, first, the lever 52 of the fine adjustment means 5 is turned to bring the eccentric shaft portion 51 to the highest position and the rear portion of the electric plane 1 is raised. Then, for example, when processing a composite pipe having a nominal diameter of 50 mm, align the scale f of the shaft support 2 with the upper surface of the mounting frame 3,
Further, the pipe fixing drum 4f is set on the bearing 31. Next, the FRP composite layer 6 is removed by removing the jacket of the pipe end in advance.
The composite pipe 6 with a nominal diameter of 50 mm, exposed at 0, has a step 46 at the pipe end.
After inserting into the pipe fixing drum 4f until it abuts on the nut
Tighten 48. At this time, the long shaft 43 moves toward the mounting frame 3 side together with the tip pressing member 41, so that the flange portions 44, 44 compress the O-rings 45, 45 between both end portions of the cylindrical body 40. Therefore, the O-rings 45, 45 are pushed outward and strongly press the inner wall of the composite pipe 6, so that the composite pipe 6 is fixed to the pipe fixing drum 4f.
Fixed to. As a result, the composite tube 6 becomes parallel to the diamond rotary blade 10, and the tube end is rotatable but fixed in a fixed position on the mounting frame 3. In this state, the electric plane 1 is driven to lower the rear end of the electric plane 1 while slowly rotating the composite pipe 6, and the rear end of the electric plane 1 is placed on the eccentric shaft portion 51 of the fine adjustment means 5. Shave until it does. Check the outer diameter of the shaved composite pipe 6, adjust the lever 52 until the desired outer diameter is reached, and roll the composite pipe 6 on the floor to expose the FRP layer around the core pipe. be able to. After this, when processing composite pipes of the same size, the final adjustment position of the fine adjustment means 5 confirmed in the first scraping operation is tightened and fixed in advance with the nut 54 before use. In this case, a large number of composite pipes 6 can be continuously processed with the same accuracy even if they are all scraped.

Next, when processing a composite pipe having a nominal diameter of 25 mm, it is sufficient to align the scale c of the shaft support portion 2 with the upper surface of the mounting frame 3 and replace the pipe fixing drum 4f with the pipe fixing drum 4c as described above.

Similarly, according to the nominal diameter of the composite pipe to be processed, the shaft support 2
It is possible to process a total of 8 types of composite pipes simply by adjusting and changing the pipe fixing drum 4f.

As described above, according to the present embodiment, the FRP composite pipe attached to the pipe fixing drum can be smoothed by scraping the FRP layer cleanly because the pipe end does not rattle, and the processing surface diameter is 1 It can be finished with an accuracy of / 10 mm.

Also, anyone can accurately finish multiple compound pipes with different diameters by simply reassembling the device.
Further, it is possible to form a lightweight and compact body without the need for a large frame or a pressing device. Also, since all of them are assembled with bolts and nuts, they can be disassembled into small pieces and transported easily.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like within the scope not departing from the gist of the invention. Included in the present invention.

For example, in the embodiment, eight types of pipe fixing drums 4 having different diameters of the cylindrical body 40 are provided to form one set, but the number of combinations of the pipe fixing drums 4 and the like can be set arbitrarily without being limited to this.

Further, in the embodiment, the pipe fixing drum 4 fixes the FRP composite pipe by compressing the O-ring 45 and pushing the O-ring 45 outward, but not limited to this, the long shaft 43 is moved to move the wedge inside the composite pipe. You may make it move outward and press an inner wall and fix it. Further, the long shaft 43 and the like may be moved by using an actuator such as an air cylinder or a hydraulic cylinder.

In the embodiment, the fine adjustment means 5 has a structure in which the electric plane 1 is mounted on the eccentric shaft portion 51 and the eccentric shaft portion 51 is rotated to finely adjust the electric plane 1 vertically. Not limited to this, fine adjustment may be performed using a screw and a screw shaft, or a gear, a lever, or the like may be used.

Further, the spindle 23 may be provided with a scale indicating the cutting width, and in the case of a composite pipe having a large size, the cutting width may be widened based on the scale.

(Effects of the Invention) As described above, the FRP composite pipe outer peripheral shaving device of the present invention has the above-mentioned configuration, which results in FR
Since the pipe end of the P composite pipe is rotatably fixed, the pipe end does not rattle during shaving, and there is no leftover of the FRP layer. Also, 1
/ 10mm processing accuracy is obtained, and F is parallel to the core tube.
Since the RP layer can be scraped off, it is possible to obtain a smooth finished surface that is parallel to the shaft center without cutting the core tube part.
Further, the respective constituent members are also small in size, and it is possible to obtain an effect that they can be easily transported.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an outer peripheral shaving device for an FRP composite pipe according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a usage state of the pipe fixing drum, FIG. 3 is an explanatory view showing a coaxial fulcrum, and FIG. FIG. 5 is an explanatory view showing the same fine adjustment means, FIG. 5 is an explanatory view showing the same use state, and FIGS. 6 (a) to 6 (h) are plan views showing the same eight pipe fixing drums. A: Peripheral scraping device for FRP composite pipe 1: Electric plane 2: Shaft support 3: Mounting frame 4: Pipe fixing drum 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h: Pipe fixing drum 5: Fine adjustment means 6: FRP compound pipe 10: Diamond rotary blade

Claims (1)

[Scope of utility model registration request] 1. An electric plane having a rotary blade; a mounting frame provided with a shaft supporting portion for supporting a front end portion of the electric plane and rotatably holding in the vertical direction, the mounting frame being movable up and down; It is selected according to the size of the FRP composite pipe from the provided, it is arranged in parallel with the rotary blade of the electric plane pivotally supported by the mounting frame, and it is freely rotatable in the mounting frame at the position below the rotary blade. A pipe fixing drum that is axially supported and presses and fixes the inner wall of the FRP composite pipe inserted into the outside; a fine adjustment for finely adjusting the rotating position of the electric plane by mounting the rear end of the electric plane. An outer peripheral shaving device for an FRP composite pipe, which is equipped with adjusting means;