JP6500604B2 - Overflow removal jig for pneumatic fenders - Google Patents

Description

  The present invention relates to an overflow removing jig for pneumatic fenders.

DESCRIPTION OF RELATED ART Conventionally, the pneumatic-type fenders which laminated | stacked the inner-layer rubber, the reinforcement layer, and the outer-layer rubber | gum were provided (refer patent document 1).
The pneumatic fender forms an unvulcanized pneumatic fender having a body and mirrors at both ends of the body, and the unvulcanized pneumatic fender is molded in a mold. Manufactured by vulcanization molding.
Then, prior to vulcanization molding, a metal die is disposed at the central opening of the mirror portion, and by performing vulcanization molding, the outer periphery of the die is embedded in the inner peripheral portion of the opening.

Japanese Patent Application Laid-Open No. 2002-21044

By the way, when the unvulcanized pneumatic fender is vulcanized in the mold, the mating surface of the die is positioned around the die to be embedded, and the rubber protrudes along the mating surface to make the die Overflow is likely to occur from the surroundings.
Conventionally, since the removal of the overflow is performed manually using a knife, the work efficiency is low, and some improvement is required.
The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an overflow removing jig for a pneumatic fender, which is advantageous for efficiently removing the overflow.

In order to achieve the above object, the invention according to claim 1 is an overflow removing method for removing an overflow protruding from the periphery of a mouthpiece having a cylindrical portion embedded in the center of mirror portions at both ends of a body of a pneumatic fender. The support shaft disposed inside the cylindrical portion, and pressing the plurality of places provided at the tip of the support shaft and spaced in the circumferential direction of the inner peripheral surface of the cylindrical portion. A fixing portion for fixing a support shaft to the center of the cylindrical portion; a rotating arm rotatably coupled to the support shaft and extending radially outward of the cylindrical portion outside the axial direction of the cylindrical portion; A roll provided on an arm and pressed against the surface of the mirror portion, an overflow cutting cutter provided on the rotary arm, and a rotating means for rotating the rotary arm are characterized.
According to a second aspect of the present invention, the overflow cutting cutter has an elongated shape, and a blade is provided at the tip in the longitudinal direction, and the longitudinal direction is parallel to the extending direction of the rotating arm. And the rotating arm is inclined in a direction passing through the tip of the support shaft and away from a plane perpendicular to the extending direction of the support shaft as it is separated from the support shaft. .
The invention according to claim 3 is characterized in that the overflow cutting cutter is provided movably in the extending direction of the rotating arm.
The invention as set forth in claim 4 is characterized in that a position adjusting portion for adjusting the position of the rotating arm in the longitudinal direction of the support shaft is provided.
The invention according to claim 5 is characterized in that the roll is provided so as to be positionally adjustable in a direction away from and approaching the rotating arm.
The invention according to claim 6 is characterized in that the rotating means is constituted by a handle provided on the rotating arm.
The invention according to claim 7 is characterized in that the handle is provided at a position of the rotating arm close to the blade portion of the overflow cutting cutter in the extending direction of the rotating arm.

According to the first aspect of the present invention, the overflow cutting cutter can cut the overflow protruding from the periphery of the mouthpiece by a very simple operation such as rotating the rotating arm around the spindle fixed to the mouthpiece. Therefore, it is advantageous to efficiently remove the overflow.
According to the second aspect of the invention, the location of the overflow cutting cutter except for the blade portion is separated from the surface of the mirror portion and does not contact the surface of the mirror portion, which is advantageous in efficiently removing the overflow. .
According to the third aspect of the present invention, even when the sizes of the overflows are different, the position of the overflow cutting cutter can be easily adjusted, which is advantageous in reliably cutting the overflows.
According to the fourth aspect of the present invention, the position of the rotary arm in the longitudinal direction of the support shaft can be adjusted, which is advantageous in efficiently performing the work of removing the overflow.
According to the fifth aspect of the invention, by rotating the rotating arm, the roll can be reliably rotated while the overflow can be cut by the overflow cutting cutter, which is advantageous in improving the efficiency of removing the overflow.
According to the sixth aspect of the present invention, the rotary arm can be easily rotated using the handle, which is advantageous in improving the efficiency of the overflow removal operation.
According to the seventh aspect of the present invention, the overflow can be reliably cut by the cutter for overflow cutting, which is advantageous in improving the efficiency of the removal operation of the overflow.

It is sectional drawing which shows the location of the nozzle | cap | die vicinity of a pneumatic-type fender, and shows the state which the overflow produced. It is explanatory drawing which shows the use condition of the overflow removal jig | tool of the pneumatic-type fenders which concerns on this Embodiment. It is an arrow A view of FIG. It is a top view of rotation arm. It is a top view which shows the structure of the cutter for overflow cutting. It is B arrow line view of FIG. It is sectional drawing which shows the location of the nozzle | cap | die vicinity of a pneumatic-type fender, and shows the state from which the overflow was removed.

Next, the overflow removing jig of the pneumatic fender according to the present embodiment will be described with reference to the drawings.
First, the pneumatic fender will be described.
As shown in FIG. 1, the pneumatic fender 10 includes a cylindrical body (not shown) and mirror parts 12 formed at both ends of the body, and the body and the mirror part 12 are inner layers. The rubber, the reinforcing layer, and the outer layer rubber are laminated.
The diameter of the pneumatic fender 10 (body) is, for example, 2.5 m to 5.5 m, but the present invention is of course applicable even if the diameter is equal to or less than this range.
A mouthpiece 14 is provided at the central opening 1202 of the mirror portion 12.
The base 14 is for attaching an air injection valve 15 for air injection.

The mouthpiece 14 includes a cylindrical portion 16 embedded in the center of the mirror portion 12 and a bottom portion 18 that closes the end portion on the barrel side in the axial direction of the cylindrical portion 16.
The cylindrical portion 16 includes an outer ring plate portion 1602 located on the surface of the mirror portion 12, a cylindrical portion 1604 extending from the inner peripheral portion of the outer ring plate portion 1602 toward the back surface of the mirror portion 12, and a cylindrical portion 1604. An intermediate annular plate portion 1606 extends radially outward from the intermediate portion, and an inner annular plate portion 1608 extends radially inward from an end of the cylindrical portion 1604 on the body side.
The outer peripheral surface of the outer ring plate portion 1602, the back surface of the outer ring plate portion 1602, the outer peripheral surface of the cylindrical portion 1604, the surface of the intermediate ring plate portion 1606, and the back surface of the inner ring plate portion 1608 are joined to the mirror portion 12.
The bottom portion 18 has a disk shape, and the outer peripheral surface of the back surface of the bottom portion 18 and the outer peripheral surface of the bottom portion 18 are brought into contact with the inner peripheral surfaces of the inner ring plate portion 1608 and the cylindrical portion 1604 and joined by welding.
The air injection valve 15 is provided at a position deviated from the center of the bottom portion 18.

When the pneumatic fender 10 in a non-vulcanized state is vulcanized in the mold for vulcanization, the mating surface of the mold is positioned around the die 14.
At the time of vulcanization molding, the overflow of the rubber occurs along the mating surface, and the overflow 2 occurs, and after the vulcanization molding, the overflow 2 protrudes in a cylindrical shape along the entire outer periphery of the outer ring plate portion 1602.

Next, the overflow removal jig 20 of the pneumatic fender 10 according to the present embodiment will be described.
As shown in FIG. 2, the overflow removal jig 20 is configured to include a support shaft 22, a fixed portion 24, a rotating arm 26, a roll 28, an overflow cutting cutter 30, and a handle 32. .

As shown in FIGS. 2 and 3, the support shaft 22 is disposed inside the cylindrical portion 16 passing the center of the cylindrical portion 16.
The fixing portion 24 is provided at the tip of the support shaft 22 and presses the support shaft 22 at a plurality of places spaced in the circumferential direction of the inner peripheral surface of the cylinder portion 16 at the inner side of the cylinder portion 16. It is fixed to
In the present embodiment, fixing portion 24 includes three legs 2402 extending radially outward from support shaft 22 from a point spaced in the circumferential direction of the tip of support shaft 22, and the end of each leg 2402. And a cap screw 2404 provided on the
In the present embodiment, the support shaft 22 is non-rotatably fixed to the center of the cylindrical portion 16 by the fixing portion 24.

As shown in FIGS. 2 and 4, the rotary arm 26 is rotatably coupled to the support shaft 22, protrudes outward in the radial direction of the support shaft 22, and has a bifurcated shape.
In the present embodiment, the proximal end of the rotating arm 26 is rotatably coupled to the support shaft 22 via the bearing portion 34.
Further, as shown in FIG. 2, the rotating arm 26 is inclined at an angle θ in a direction away from the support shaft 22 and away from the plane perpendicular to the extending direction of the support shaft 22 through the tip of the support shaft 22. ing.

Further, in order to carry out the work of removing the overflow 2 efficiently, a position adjustment unit 36 is provided which adjusts the position of the rotary arm 26 along the support shaft 22.
The position adjustment portion 36 is configured by a collar 3602 provided on both sides of the bearing portion 34 so as to be movable in the axial direction of the support shaft 22, and the collar 3602 is fixed to the support shaft 22 by screws 3604 at appropriate places. Therefore, the bearing portion 34 of the rotary arm 26 is attached so as not to move in the longitudinal direction of the support shaft 22 by sandwiching the bearing portion 34 with the collars 3602.

The roll 28 is rotatably supported at an end of the rotating arm 26 about an axis parallel to the radial direction of the cylindrical portion 16 and pressed against the surface of the mirror portion 12.
More specifically, the rotating arm 26 is provided with a bracket 38 so as to be positionally adjustable along the extending direction of the rotating arm 26.
The roll 28 is rotatably supported by a U-shaped support piece 3802, and a rod 3804 attached to the support piece 3802 is movably supported by a bracket 38 in the longitudinal direction of the rod 3804. Then, by adjusting the position of the rod 3804 with respect to the bracket 38 and tightening the rod 3804 with an external thread 3806 coupled to the bracket 38, the position adjustment of the roll 28 in the direction approaching and moving away from the rotating arm 26 is performed.

The overflow cutting cutter 30 is provided at an intermediate portion of the rotating arm 26.
As shown in FIG. 5, the overflow cutting cutter 30 has a strip plate-like cutter body 3002, a holder 3004 for holding the cutter body 3002, and a blade 3006 provided at the tip of the cutter body 3002 and exposed from the holder 3004. And have.
As shown in FIGS. 5 and 6, the holder 3004 is disposed on the upper surface of a rectangular support plate 40 which is slightly larger than the holder 3004, and two places spaced in the longitudinal direction of the holder 3004 are attached via the attachment member 42. The bolt B is fastened to the support plate 40. Therefore, the amount of protrusion of the blade portion 3006 from the support plate 40 is adjusted by the relaxation tightening of the bolt B.
As shown in FIGS. 4 to 6, rods 44A and 44B are erected at two places spaced in the longitudinal direction of the support plate 40, and the tips of the two rods 44A and 44B are respectively the slider 46A and the slider 46A. It is movably connected to the rotary arm 26 along the extending direction via the arm 46B.
Further, as shown in FIG. 2, since the cutter body 3002 is disposed parallel to the rotating arm 26, the blade portion 3006 extends at an angle θ, which is the inclination angle of the rotating arm 26 with respect to the overflow 2. The portion of the overflow cutting cutter 30 excluding the blade portion 3006 is separated from the surface of the mirror portion 12 so as not to be in contact with the surface of the mirror portion 12.

The handle 32 constitutes a rotating means for rotating the rotating arm 26.
In the present embodiment, as shown in FIG. 2, the handle 32 is provided on the rod 44A on the side closer to the blade 3006 of the two rods 44A and 44B, and the work of removing the overflow 2 by the blade 3006 is made more efficient. Is planned.

Next, how to use the overflow removal jig 20 will be described.
As shown in FIGS. 1 and 2, the overflow removing jig 20 is attached to the mouthpiece 14 of the pneumatic fender 10 after vulcanization molding.
That is, the distal end of the support shaft 22 is disposed inside the cylindrical portion 16, and the distal ends of the three legs 2402 are pressed against the inner peripheral surface of the cylindrical portion 16 by operating the holding screw 2404. Fix in line with 16 axes.
Also, the overflow cutting cutter 30 is positioned radially outward of the overflow 2 via the sliders 46A and 46B, and the rotation arm via the bearing portion 34 is positioned such that the overflow cutting cutter 30 is positioned where the overflow 2 is to be cut. 26 is positioned at an appropriate position in the axial direction of the support shaft 22.
Further, the position of the roll 28 is adjusted in the direction of moving away from and approaching the rotating arm 26, and the outer peripheral surface of the roll 28 is brought into contact with the surface of the mirror 12.

Next, the handle 32 is gripped and the overflow cutting cutter 30 is moved in the extending direction of the rotary arm 26 via the sliders 46A and 46B, and the blade 3006 is pierced radially inward from the outer peripheral surface of the overflow 2.
In this state, the rotary arm 26 is rotationally moved about the support shaft 22 via the handle 32, and the blade 3006 is rotationally moved along the entire circumferential direction in a state where the blade portion 3006 pierces the outer peripheral surface of the overflow 2. At this time, the roll 28 is brought into contact with the surface of the mirror portion 12 and rotated, thereby stabilizing the position of the overflow cutting cutter 30 in the longitudinal direction of the support shaft 22, that is, the thickness direction of the mirror portion 12. It is designed.
The blade portion 3006 is rotationally moved along the outer periphery of the overflow 2 while bringing the blade portion 3006 close to the support shaft 22, whereby the overflow 2 is gradually cut from the outer peripheral surface toward the inner peripheral surface. As shown, the overflow 2 protruding from the periphery of the outer ring plate portion 1602 is completely removed from the surface of the mirror portion 12.
After the overflow 2 is removed, the respective holding screws 2404 are loosened to remove the overflow removal and fix the pressing of the jig 20 to the base 14 and release the overflow removal jig 20 from the base 14 to complete the operation.

  According to the present embodiment, the overflow cutting cutter 30 cuts the overflow 2 protruding from the periphery of the mouthpiece 14 by an extremely simple operation such as rotating the rotary arm 26 around the support shaft 22 fixed to the mouthpiece 14. It is advantageous to efficiently remove the overflow 2 because it is possible to

Further, according to the present embodiment, as the rotating arm 26 moves away from the support shaft 22, it is inclined in the direction away from the plane perpendicular to the extending direction of the support shaft 22 through the tip of the support shaft 22. Therefore, the blade portion 3006 extends at an angle θ which is the inclination angle of the rotary arm 26 with respect to the overflow, and the portion of the overflow cutting cutter 30 excluding the blade portion 3006 is separated from the surface of the mirror portion 12 It is designed not to come in contact with the 12 surfaces.
Therefore, it is advantageous to efficiently remove the overflow 2.

  Further, according to the present embodiment, since the cutter 30 for overflow cutting is provided so as to be movable and adjustable in the extending direction of the rotary arm 26, the sizes of the pneumatic fenders 10 are different. Even when the size of 2 is different, the position of the overflow cutting cutter 30 can be easily adjusted, which is advantageous in reliably cutting the overflow 2.

  In the present embodiment, the case where the rotating arm 26 is manually rotated using the handle 32 as the rotating means has been described, but an actuator such as a motor is used as the rotating means, and the rotating arm 26 is rotated by the actuator. If the removal of the overflow 2 is performed, it is more advantageous to efficiently remove the overflow 2.

DESCRIPTION OF SYMBOLS 2 overflow 10 pneumatic fender 12 mirror part 1202 opening 14 base 16 cylinder part 18 bottom part 20 overflow removal jig 22 support shaft 24 fixed part 2402 leg part 2404 holding screw 26 rotating arm 28 roll 30 cutter for overflow cutting 3002 cutter body 3004 Holder 3006 Blade part 32 Handle 34 Bearing part 36 Position adjustment part 3602 Collar 3604 Screw 40 Support plate 42 Mounting member 44A, 44B Rod 46A, 46B Slider B Bolt

Claims (7)

An overflow removing jig for removing an overflow protruding from the periphery of a base having a tube portion embedded in the center of mirror portions at both ends of a body of the pneumatic fender,
A spindle disposed inside the cylinder portion;
A fixing portion for fixing the support shaft to the center of the cylindrical portion by pressing a plurality of places provided at the tip of the support shaft and spaced in the circumferential direction of the inner peripheral surface of the cylindrical portion;
A rotary arm rotatably coupled to the support shaft and extending radially outward of the cylindrical portion outside the axial direction of the cylindrical portion;
A roll provided on the rotating arm and pressed against the surface of the mirror;
A cutter for overflow cutting provided on the rotating arm;
Rotation means for rotating the rotation arm;
A removal tool for overflowing a pneumatic fender characterized by comprising: The overflow cutting cutter has an elongated shape, and is provided with a blade at its longitudinal tip and attached to the rotating arm with the longitudinal direction parallel to the extending direction of the rotating arm.
The rotating arm is inclined in a direction away from a plane perpendicular to the extending direction of the spindle through the tip of the spindle as separating from the spindle.
The overflow removal jig for pneumatic fenders according to claim 1, characterized in that: The overflow cutting cutter is movably provided in the extending direction of the rotating arm.
An overflow removing jig for a pneumatic fender according to claim 1 or 2. There is provided a position adjustment unit that adjusts the position of the rotary arm in the longitudinal direction of the spindle.
An overflow removing jig for a pneumatic fender according to any one of claims 1 to 3, characterized in that: The said roll is provided so that position adjustment is possible in the direction which adjoins with respect to the said rotation arm,
The overflow removal jig of the pneumatic fender according to any one of claims 1 to 4, characterized in that: The rotating means is constituted by a handle provided on the rotating arm,
The overflow removal jig of the pneumatic fender according to any one of claims 1 to 5, characterized in that: The handle is provided at a position of the rotating arm close to a blade portion of the overflow cutting cutter in a direction in which the rotating arm extends.
The overflow removing jig for pneumatic fenders according to claim 6, characterized in that:

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