JP2013220557A - Method of cutting spew and cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of cutting spews and a cutting device, capable of cutting spews from roots surely and efficiently.SOLUTION: One face in a thickness direction of a rotating plate 12A is located close to a surface 402 of a tire 4, and on a movement locus T in which locking parts 24A are moved by rotation of the rotating plate 12A, a blade part 1602 is arranged between the one face and the surface 402 of the tire 4. At least one of the surface 402 of the tire 4 and a frame 18A is moved in a direction in which the spews 2 approach a portion of the blade part 1602 intersecting with the movement locus T, and the rotating plate 12A is rotated by a rotating plate rotating means 14 in a direction in which the locking parts 24A approach the portion of the blade part 1602. While stopping falling-down of the spews 2 in a direction of separating from the blade part 1602 by the locking parts 24A, roots of the spews 2 are cut by the blade part 1602.

Description

  The present invention relates to a cutting method and a cutting device for spew generated in a vulcanizing process of a pneumatic tire.

In order to exhaust air and gas between the mold and the green tire during the vulcanization process of the tire, a vent that connects the inside and outside of the mold to the part of the mold corresponding to the tread part and sidewall part Many holes are provided.
After venting air and gas in the vulcanization process, the rubber is pushed out to the vent holes, and when the tire is taken out of the mold after the vulcanization process, spews made of rubber extruded into the vent holes are formed on the tire surface. A large number of protrusions will be provided. And if many spews are projected, the appearance of the tire is impaired.

  Conventionally, as an apparatus for cutting such a spew, a mold having a V-groove is arranged close to the outer peripheral surface of the tire, the spew is sandwiched between the V-groove by rotating the tire, and the spew is cut by the V-groove (Patent Document 1) and an apparatus (Patent Document 2) that cuts a spew by moving a movable blade having a large number of convex blade portions in a reciprocating linear manner with respect to a fixed blade having a large number of convex blade portions. Proposed.

Japanese Patent Publication No.3-50696 No. 2-39791

However, in any conventional spew cutting device, the spew falls down at the time of cutting, and the spew cannot be cut from its root, and the spew root remains on the surface of the tire as shown in FIG. End up.
If the spew root remains on the surface of the tire, the appearance is impaired, which is disadvantageous in increasing the commercial value of the tire.
In addition, if the spew root remains on the surface of the tire, the spew root will be scraped off from the tire surface when the vehicle is running, resulting in a defective portion on the tire surface, which is also disadvantageous in increasing the product value of the tire. Arise.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a spew cutting method and a cutting apparatus that can cut a spew from the root reliably and efficiently.

In order to achieve the above object, the present invention provides a method of cutting a spew protruding from the surface of a tire, wherein a rotating plate having a locking portion that can be locked to the spew is provided on the outer periphery, and the rotating plate A rotating plate rotating means for rotating and a cutter having a blade portion are supported by a frame, and one surface in the thickness direction of the rotating plate is brought close to the surface of the tire, and the locking plate is rotated by rotating the rotating plate. The blade portion is disposed between the one surface and the surface of the tire on a movement trajectory where the portion moves, and at least one of the surface of the tire or the frame of the blade portion where the spew intersects the movement trajectory. The rotating plate is rotated by the rotating plate rotating means in a direction in which the locking portion approaches the blade portion, and moved away from the blade portion by the locking portion. Spew By the blade portion while preventing Les characterized by being adapted to cut the roots of spew.
The present invention also relates to a spew cutting device that protrudes from the surface of a tire, the rotating plate having a locking portion that can be locked to the spew projecting on the outer peripheral portion, and a rotating plate that rotates the rotating plate. Rotating means, a cutter having a blade, and a rotating plate, a rotating means for rotating plate, a frame for supporting the cutter, the cutter is in a location close to one surface in the thickness direction of the rotating plate, The root of the spew located on the movement trajectory of the locking portion that moves by the rotation of the rotating plate is arranged to be cut by the blade portion, and the rotating plate rotating means is arranged on the spew located on the moving trajectory. The rotating plate is rotated in a direction to bring the spew locked to the locking portion closer to the blade portion while preventing the spew from falling down in a direction away from the blade portion.
Further, the present invention is a spew cutting device that is attached to a tire rotating device that rotationally drives a tire and protrudes from the surface of the tire, and is a rotation in which a locking portion that can be locked to the spew is provided on the outer peripheral portion. A rotating plate for rotating the rotating plate, a cutter having a blade portion, a rotating plate, a rotating means for rotating plate, and a frame that supports the cutter and is attached to the tire rotating device. One surface in the thickness direction of the plate is disposed close to the surface of the tire, and the cutter is rotated between the one surface in the thickness direction of the rotating plate and the surface of the tire by the rotation of the rotating plate. The root of the spew located on the movement locus of the locking portion that moves is arranged so as to be cut by the blade portion, and the rotating plate rotating means is engaged with the spew located on the movement locus, and the blade Away from the club And wherein the rotating the rotating plate spew that engaged with the locking portion while preventing collapse of the spew in the direction in a direction close to the blade portion.

According to the spew cutting method and the cutting device of the present invention, the root of the spew is cut by the blade in a state where the falling of the spew in the direction away from the blade is prevented by the locking portion.
Therefore, the spew can be reliably cut from the root regardless of the height of the spew.
Further, there is no problem that the cut spew is clogged between the blade portion and the locking portion, and the cut spew is reliably discharged to the outside of the frame by the rotation of the locking portion. .

It is a top view of the spew cutting device of a 1st embodiment. It is a front view of the spew cutting device of a 1st embodiment. It is a top view which shows the relationship between a rotating plate, a latching | locking part, a spew, a cutter, and a blade part. It is a front view which shows the relationship between a rotating plate, a latching | locking part, a spew, a cutter, and a blade part. It is a top view of the spew cutting device of a 2nd embodiment. It is a top view which shows the relationship between a rotating plate, a latching | locking part, a spew, a cutter, and a blade part. It is a front view which shows the relationship between a rotating plate, a latching | locking part, a spew, a cutter, and a blade part. (A), (B) is a figure which shows the modification of a latching | locking part, respectively. (A) is a top view of a cutter provided with a guide means and a heating means, (B) is a B arrow view of (A). It is explanatory drawing of the spew cutting device of 3rd Embodiment installed in the tire rotation apparatus, (A) is the figure of the spew cutting device seen from the front of a tire rotation apparatus, (B) is FIG. 10 (A). FIG. (A) is explanatory drawing of the root of a spew after cut | disconnecting a spew with the spew cutting device of embodiment, (B) is explanatory drawing of the root of a spew after cutting a spew by the conventional method.

Hereinafter, a spew cutting method of a tire according to the present invention will be described together with a spew cutting device according to the drawings.
(First embodiment)
First, the first embodiment will be described with reference to FIGS.
The spew cutting device 10A includes a rotating plate 12A, a rotating plate rotating means 14, a cutter 16A, and a frame 18A. The spew cutting device 10A is a manual type.

The frame 18A includes a support plate 20A and a grippable grip 22 protruding from the support plate 20A.
The frame 18A is formed in such a shape that a portion where the rotating plate 12A and the cutter 16A intersect can be seen from the outside so that the spew cutting operation can be easily performed.

The rotating plate 12A has a disk shape, and a plurality of locking portions 24A are provided on the outer peripheral portion of the rotating plate 12A so as to protrude radially outward of the rotating plate 12A at equal intervals in the circumferential direction.
The locking portion 24A can be locked to the spew 2 and prevents the spew 2 from falling over in the direction away from the blade portion 1602 of the cutter 16A. In the present embodiment, the side surface 2401 of the locking portion 24A located in front of the rotation direction of the rotating plate 12A is locked to the spew 2.
A support shaft 26 projects from the center of the rotating plate 12A so as to rotate integrally with the rotating plate 12A, and the upper portion of the supporting shaft 26 is rotatably supported by a support plate 20A via a bearing. A pulley 28A is attached to a position of the support shaft 26 located above.
Note that when the rotating plate 12A rotates about the support shaft 26, the locking portion 24A also rotates, and a locus centering on the support shaft 26 of the locking portion 24A is referred to as a movement track T.

The cutter 16A has a blade portion 1602 extending linearly.
The cutter 16A is supported by the support plate 20A via the rod 29.
The cutter 16A is disposed in the vicinity of one surface in the thickness direction of the rotating plate 12A at the outer peripheral portion of the rotating plate 12A.
In the present embodiment, the extending direction of the blade portion 1602 intersects at an angle α smaller than 90 degrees with respect to the arrow A direction in which the spew 2 is brought close to the blade portion 1602 by the locking portion 24A by the rotation of the rotating plate 12A. It arrange | positions so that it may cut | disconnect the spew 2 by the blade part 1602 more smoothly.
Further, in the present embodiment, the inclined surface 1202 is formed on the outer peripheral portion on one surface in the thickness direction of the rotating plate 12A, and the cutter 16A is disposed so that the blade portion 1602 is positioned on the inclined surface 1202. ing.

The rotating plate rotating means 14 rotates the rotating plate 12 </ b> A in the direction of the arrow A so that the spew 2 locked to the locking portion 24 </ b> A approaches the blade portion 1602.
In the present embodiment, the rotating plate rotating means 14 includes a roller 30 and a power transmission mechanism 32 that transmits the rotational force of the roller 30 to the rotating plate 12A. The belt pulley mechanism 34, the gear mechanism 36, and the second belt pulley mechanism 38 are included.
The roller 30 is disposed below the support plate 20A at a location displaced in a direction (arrow B direction) in which the spew 2 is brought closer to the blade portion 1602 than a location where the blade portion 1602 and the movement locus T intersect. . Specifically, the roller 30 is moved from the movement trajectory of the spew 2 so as not to interfere with the root of the cut spew 2 at a position displaced in the arrow B direction from a position where the blade portion 1602 and the movement trajectory T intersect. It is arranged at a place away from the side.
The roller 30 rotates integrally with the support shaft 3002, and both sides of the support shaft 3002 are rotatably supported by a portal-type support member 3004, and the support shaft 3002 projects from the support member 3004.
A male screw member 3006 protruding upward from the support member 3004 is screwed into a female screw of the support plate 20A via a lock nut 3008, and is fixed so that the height can be adjusted.

On the support plate 20A, a rotating shaft 4002 is rotatably supported by a bearing incorporated in the boss portion 4004, and is attached to one end of the rotating shaft 4002 and a pulley 28B attached to the end of the support shaft 3002 of the roller 30. A belt 28D is stretched over the worn pulley 28C. The pulleys 28B and 28C and the belt 28D constitute a first belt pulley mechanism 34, and the belt 28D is disposed through the opening 2002 of the support plate 20A.
Also, a bevel gear 3602 is attached to the other end of the rotating shaft 4002, and this bevel gear 3602 meshes with a bevel gear 3606 that is rotatably attached to a support shaft 3604 protruding above the support plate 20A. doing. The bevel gears 3602 and 3606 constitute a gear mechanism 36.
A pulley 28E is provided on the lower surface of the bevel gear 3606 coaxially with the bevel gear 3606, and a belt 28F is bridged between the pulley 28E and a pulley 28A attached to the support shaft 26. The pulleys 28A and 28E and the belt 28F constitute a second belt pulley mechanism 38.

Accordingly, with the roller 30 in contact with the surface 402 of the tire 4, the surface 402 of the tire 4 is moved in the direction in which the spew 2 approaches the blade portion 1602 as indicated by the arrow B, or the frame is directed toward the spew 2. Move 18A. By this movement, the rotational force of the roller 30 is transmitted to the rotating plate 12A via the first belt pulley mechanism 34, the gear mechanism 36, and the second belt pulley mechanism 38. Thereby, the rotating plate 12A rotates in a direction in which the spew 2 is brought closer to the blade portion 1602 by the locking portion 24A.
In this case, the tangential speed of the locking portion 24A is equal to the speed at which the spew 2 approaches the blade portion 1602, or the tangential speed of the locking portion 24A is higher than the speed at which the spew 2 approaches the blade portion 1602. The rotational speed of the rotating plate 12A is set through the first belt pulley mechanism 34, the gear mechanism 36, and the second belt pulley mechanism 38 so as to be a slightly large value.

Next, a method of using the spew cutting device 10A of the first embodiment will be described.
For example, the grip 22 is gripped and the roller 30 is brought into contact with the upward surface 402 (the surface of the tread portion or the surface of the shoulder portion) of the installed tire 4, and one end surface of the rotating plate 12 A and the blade portion 1602 are brought into contact with the tire 4. Proximity to surface 402.
In this case, by bringing the roller 30 into contact with the surface 402 of the tire 4, the frame 18 </ b> A can be swung with the roller 30 as a fulcrum, so that one end surface of the rotating plate 12 </ b> A and the blade portion 1602 are brought close to the surface 402 of the tire 4. This is advantageous for efficient work.

Next, the grip 22 is gripped, and the spew cutting device 10 </ b> A is moved in a direction in which the spew 2 approaches the portion of the blade portion 1602 that intersects the movement trajectory T.
As the spew cutting device 10A moves, the roller 30 rolls, and the rotational force of the roller 30 is transmitted to the rotating plate 12A via the power transmission mechanism 32, and the tangential speed of the locking portion 24A and the spew 2 are the blades. The rotating plate 12 </ b> A rotates with the speed approaching the portion 1602 being equal or the tangential speed of the locking portion 24 </ b> A being slightly larger than the speed at which the spew 2 approaches the blade portion 1602.

Eventually, the spew 2 enters the gap between the locking portion 24A and the locking portion 24A, and moves away from the blade portion 1602 at the locking portion 24A due to the rotation of the rotating plate 12A and the movement of the spew 2 cutting device 10A. The spew 2 is moved in a direction approaching the blade portion 1602 together with the locking portion 24A while preventing the spew 2 from falling.
The spew 2 is cut from the root by the blade portion 1602 in a state in which the spew 2 is prevented from falling in the direction away from the blade portion 1602 by the locking portion 24A.
The spew 2 that has been cut passes through the upper surface of the blade portion 1602 by the locking portion 24A and is discharged to the rear of the frame 18A as the rotating plate 12A rotates.
When the spew 2 is cut, the spew cutting device 10A is moved toward the next spew 2, and the spew 2 is cut and discharged in the same manner as described above.

According to the present embodiment, in the thickness direction of the rotating plate 12A, the locking portion 24A located at a location close to the blade portion 1602 prevents the spew 2 from falling down in the direction away from the blade portion 1602. The root of the spew 2 is cut by the blade portion 1602.
Therefore, regardless of the height of the spew 2, the spew 2 can be reliably cut from the root.
As shown in FIG. 11A, the root of the spew 2 cut by the spew cutting device 10A is only slightly protruded from the surface 402 of the tire 4, and the surface 402 of the tire 4 has a substantially continuous curved shape. Become.
In addition, the cut spew 2 is not clogged between the blade portion 1602 and the locking portion 24A, and the cut spew 2 is rotated by the locking portion 24A so that the blade portion 1602 is rotated. Is reliably discharged to the outside of the frame 18A.
When the height of the base of the spew 22 after being cut was measured, in the conventional method, the root remained as shown in FIG. 11 (B) and the height H of the root was 3.0 mm. In the present embodiment, as shown in FIG. 11 (A), the height H of the remaining root with almost no root remaining was 0.3 mm.
Therefore, it is advantageous in improving the appearance of the tire and increasing the commercial value of the tire.

In the first embodiment, the case where the rotating plate rotating means 14 is configured using the roller 30 and the power transmission mechanism 32 has been described. However, the rotating plate rotating means 14 is adjustable in rotation speed. You may comprise using a motor.
Further, in order to smoothly cut the spew 2 by the blade portion 1602, the locking portion 24A only needs to be locked to the spew 22 at least when the spew 22 contacts the blade portion 1602.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS.
In the following embodiments, the same parts or members as those in the first embodiment are denoted by the same or similar reference numerals, and the description thereof is omitted.
The spew cutting device 10B for a tire according to the second embodiment is different from the first embodiment in that the shape of the locking portion 24B and the shape of the cutter 16B are different, and a cutter rotating means 44 is added. The other points are the same as those of the first embodiment.
That is, the tire spew cutting device 10B includes a rotating plate 12B, a rotating plate rotating means 14, a cutter 16B, a frame 18B, and a cutter rotating means 44.

  The frame 18B includes a support plate 20B and a grip 22, and is formed in a shape in which a portion where the rotary plate 12B and the cutter 16B intersect can be seen from the outside so that the spew 2 can be easily cut.

The rotating plate 12B has a disk shape, and a support shaft 26 protrudes from the center of the rotating plate 12B so as to rotate integrally with the rotating plate 12B. The upper portion of the support shaft 26 is supported by a support plate 20B via a bearing. It is rotatably supported.
A plurality of engaging portions 24B are provided on the outer peripheral portion of the rotating plate 12B at equal intervals in the circumferential direction, and a first side surface 2402 that can be engaged with the spew 2 and a loosely located on the opposite side of the first side surface 2402. The first side surface 2402 is locked to the spew 2 and prevents the spew 2 from falling down in the direction away from the blade portion 1602 of the cutter 16B.

  The rotating plate rotating means 14 rotates the rotating plate 12B in the A direction in which the spew 2 locked to the locking portion 24B is brought close to the blade portion 1602, and in the same way as in the first embodiment, The power transmission mechanism 32 is configured to transmit the rotational force of the roller 30 to the rotating plate 12B. The power transmission mechanism 32 includes a first belt pulley mechanism 34, a gear mechanism, as in the first embodiment. 36, the second belt pulley mechanism 38 is included.

The cutter 16B includes a disc-shaped main body portion 1610 that is rotatably supported by the frame 18B, the blade portion 1602 is provided on the outer peripheral portion of the main body portion 1610, and the blade portion 1602 is arranged in the thickness direction of the rotary plate 12B. It arrange | positions in the location close | similar to the outer peripheral part of the rotating plate 12B.
A support shaft 46 protrudes from the center of the main body 1610. The support shaft 46 is rotatably supported by a frame 18B via a bearing. The rotation speed of the support shaft 46 supported by the frame 18B can be adjusted. The motor 48 is connected.
Therefore, in the present embodiment, the cutter rotation means 44 is constituted by the motor 48. The cutter rotating means 44 may be arbitrarily configured using the roller 30 and the power transmission mechanism 32 in the same manner as the rotating plate rotating means 14.
The tangent L on the blade portion 1602 at the point where the A arrow direction and the blade portion 1602 intersect with respect to the A arrow direction in which the spew 2 is brought close to the blade portion 1602 by the locking portion 24B by the rotation of the rotating plate 12B is 90 degrees. The angle is smaller than the angle α, and the cutting of the spew 2 by the blade 1602 is performed smoothly.

Next, a method of using the spew cutting device 10B of the second embodiment will be described.
For example, the grip 22 is gripped and the roller 30 is brought into contact with the upward surface 402 (the surface of the tread portion or the surface of the shoulder portion) of the installed tire 4, and one end surface of the rotating plate 12B and the blade portion 1602 are brought into contact with the tire 4. The cutter 16 </ b> B is rotated by the motor 48 close to the surface 402.
In this case, by bringing the roller 30 into contact with the surface 402 of the tire 4, the frame 18 </ b> B can be swung with the roller 30 as a fulcrum, so that one end face of the rotating plate 12 </ b> B and the cutter 16 </ b> B are brought close to the surface 402 of the tire 4. This is advantageous in efficiently performing the process.

Next, the grip 22 is gripped, and the spew cutting device 10 </ b> A is moved in a direction in which the spew 2 approaches the portion of the blade portion 1602 that intersects the movement trajectory T.
As the spew cutting device 10B moves, the roller 30 rolls, and the rotational force of the roller 30 is transmitted to the rotating plate 12B via the power transmission mechanism 32, and the tangential speed of the locking portion 24B is determined by the spew 2 being the blade. The rotating plate 12B rotates so as to have a value larger than the speed approaching the portion 1602.

Eventually, the spew 2 enters the gap between the locking portion 24B and the locking portion 24B, and the rotation of the rotating plate 12B and the movement of the spew cutting device 10B cause the locking portion 24B to move away from the blade portion 1602. The spew 2 is moved in the direction approaching the blade portion 1602 together with the locking portion 24B while preventing the spew 2 from falling.
Then, the spew 2 is cut from the root by the rotating blade portion 1602 while the locking portion 24B prevents the spew 2 from falling down in the direction away from the blade portion 1602.
The spew 2 that has been cut passes through the upper surface of the blade portion 1602 and is discharged to the rear of the frame 18B by the locking portion 24B as the rotating plate 12B rotates. This discharge is smoothly performed because the cutter 16B is also rotating.
When the spew 2 is cut, the spew cutting device 10B is moved toward the next spew 2, and the spew 2 is cut and discharged in the same manner as described above.

  According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the cutter 16B is also rotated, so that it is advantageous in discharging the cut spew 2 more smoothly. Become.

Various configurations of the locking portions 24A and 24B provided on the rotary plates 12A and 12B are conceivable.
For example, as shown in FIG. 8 (A), a locking portion 24C having a triangular shape may be provided continuously in the circumferential direction on the outer peripheral portion of the disc-shaped rotating plate 12C. Alternatively, as shown in FIG. 8B, a locking portion 24D is provided on the outer peripheral portion of the rotating plate 12D at an interval of 90 degrees in the circumferential direction, and the locking portion 24D is fixed to the spew 2 from a plane. The first side surface 2406 and the second side surface 2408 made of a curved surface located on the opposite side of the first side surface 2406 may be used.

Further, as shown in FIGS. 9A and 9B, a guide means 50 is provided to make contact with the surface 402 of the tire 4 and to easily maintain a gap between the surface 402 of the tire 4 and the cutter 16A. You may do it.
For example, the guide means 50 is rotatably disposed on the upper surface side of the cutter 16A in the vicinity of the location where the blade portion 1602 and the movement trajectory T intersect with each other via the boss portion 5002 and the support shaft 5004, and the lower portion is disposed on the cutter 16A. The four or three rollers 5008 projecting to the lower surface of the cutter 16 </ b> A through the notch portion 5006 are configured.
When such a guide means 50 is used, the roller 5008 is brought into contact with the surface 402 of the tire 4 so that the gap between the blade portion 1602 and the surface 402 of the tire 4 is maintained. Therefore, it is advantageous to easily cut the spew 2 from the root.

Further, as shown in FIG. 9A, if the heating means 52 for heating the cutter 16A is provided and the temperature of the cutter 16A is maintained at a high temperature, it is advantageous for smoothly cutting the root of the spew 2.
In this case, for example, a heater may be attached as the heating means 52 to the cutter 16A. In order to smoothly cut the root of the spew 2, it is preferable to maintain the temperature of the cutter 16 </ b> A between 60 ° C. and 120 ° C.

(Third embodiment)
Next, a third embodiment will be described with reference to FIG.
The tire spew cutting device 10 </ b> C of the third embodiment is configured by removing the grip 22 from the tire spew cutting device 10 </ b> A of the first embodiment, and is installed in the tire rotation device 60.
That is, in the third embodiment, the spew cutting device 10 </ b> C is kept stationary without being moved, and the root of the spew 2 is cut by rotating the tire 4 with the tire rotating device 60.
The tire spew cutting device 10 </ b> C of the third embodiment has the same configuration as that of the first embodiment except that the grip 22 is removed.

The tire rotating device 60 has a spindle 62 that can rotate, move up and down, and can move in the horizontal direction. The tire 4 is supported via the spindle 62.
The frame 64 of the tire rotating device 60 has a guide 66 extending in the width direction of the tire 4 supported by the spindle 62.
The center of the guide 66 in the longitudinal direction is supported by a frame 64 of the tire rotating device 60 via a bracket 68, and the guide 66 has both ends of the guide 66 in the horizontal plane with the center in the longitudinal direction of the guide 66 as a fulcrum. Is provided so as to be able to swing and adjust in a direction of approaching and separating.
The frame 18 </ b> A of the tire spew cutting device 10 </ b> C is disposed on the guide 66 through the attachment member 70 so as to be movable and adjustable along the guide 66.

Next, a method of using the spew cutting device 10C will be described.
The tire 4 is moved up and down, the tire 4 is moved in the radial direction thereof, the swing angle of the guide 66 is adjusted, and the surface 402 (the surface of the tread portion or the surface of the shoulder portion) of the tire 4 and the blade portion 1602 are brought close to each other. The rotating plate 12 </ b> A is made to face the surface 402 of the tire 4.
Next, the tire rotation device 60 rotates the tire 4 at a low speed in a direction in which the spew 2 approaches the portion of the blade portion 1602 that intersects the movement locus T.

As the tire 4 rotates, the roller 30 rolls as in the first embodiment, and the rotational force of the roller 30 is transmitted to the rotating plate 12A via the power transmission mechanism 32, and the locking portion 24A The tangential speed and the speed at which the spew 2 approaches the blade portion 1602 are equal, or the tangential speed of the locking portion 24A is slightly larger than the speed at which the spew 2 approaches the blade portion 1602 and the rotary plate 12A. Rotates.
Eventually, the spew 2 enters the gap between the locking portion 24A and the locking portion 24A, and moves away from the blade portion 1602 at the locking portion 24A due to the rotation of the rotating plate 12A and the movement of the surface 402 of the tire 4. The spew 2 is moved in a direction approaching the blade portion 1602 together with the locking portion 24A while preventing the spew 2 from falling.
The spew 2 is cut from the root by the blade portion 1602 in a state in which the spew 2 is prevented from falling in the direction away from the blade portion 1602 by the locking portion 24A.
The spew 2 that has been cut is discharged downward through the upper surface of the blade portion 1602 by the locking portion 24A as the rotating plate 12A rotates.

If the spew 2 on the entire circumference of the surface 402 of the tire 4 is cut at the place where the spew cutting device 10C is installed, the spew cutting device 10C is moved along the guide 66 and the surface of the tire 4 at the next location is moved. The spew 2 on the entire circumference of 402 is cut in the same manner.
Then, the spew cutting device 10C is moved along the guide while adjusting the swing angle of the guide 66, and all the spews 2 on the entire surface 402 of the tire 4 including the surface of the tread portion are cut from the shoulder portions on both sides.

According to the third embodiment, since the tire 4 is rotated by the tire rotating device 60 and the surface 402 of the tire 4 is moved, it is advantageous in efficiently cutting the spew 2 by the spew cutting device 10C. .
Further, when the guide 66 is provided as in the embodiment, the spew 2 over the entire surface 402 of the tire 4 including the surface of the tread portion from the shoulder portion on both sides is moved by moving the spew cutting device 10C along the guide 66. It is advantageous to cut all of them easily.
Similarly, the spew cutting device 10B of the second embodiment can also be installed in the tire rotating device 60 and used.

  2 ... Spoo, 4 ... Tire, 402 ... Tire surface, 10A, 10B, 10C ... Spew cutting device, 12A, 12B ... Rotating plate, 14 ... Rotating means for rotating plate, 16A, 16B ... Cutter, 1602 ... Blade, 18A, 18B ... Frame, 24A, 24B, 24C, 24D ... Locking part, 30 ... Roller, 32 ... Power transmission mechanism, 44 ... Rotating means for cutter, 60 ... ... tire rotating device, 62 ... spindle, 66 ... guide.

Claims (9)

A method of cutting a spew protruding from the surface of a tire,
A rotating plate having a locking portion that can be locked to a spew projecting on the outer periphery, a rotating plate rotating means for rotating the rotating plate, and a cutter having a blade portion are supported by a frame,
The one surface in the thickness direction of the rotating plate is brought close to the surface of the tire, and the moving portion is moved between the one surface and the surface of the tire on the movement locus by the rotation of the rotating plate. Place the blade,
At least one of the surface of the tire or the frame is moved in a direction in which the spew approaches the blade portion where the movement trajectory intersects, and the locking portion is used in the direction in which the locking portion approaches the blade portion. Rotating the rotating plate by rotating means,
The root of the spew was cut by the blade while preventing the spew from falling in the direction away from the blade by the locking portion.
A spew cutting method for a tire characterized by the above. A spew cutting device protruding from the surface of a tire,
A rotating plate having a locking portion that can be locked to a spew on the outer peripheral portion, a rotating plate rotating means for rotating the rotating plate, a cutter having a blade portion, the rotating plate, and a rotating plate rotating means A frame that supports the cutter,
The cutter can cut the root of the spew located on the movement locus of the locking portion moved by the rotation of the rotating plate at the location close to one surface in the thickness direction of the rotating plate by the blade portion. Placed in
The rotating plate rotating means is engaged with the spew located on the movement locus, and the spew engaged with the engaging portion while preventing the spew of the spew in a direction away from the blade portion is attached to the blade portion. Rotate the rotating plate in the approaching direction,
A spew cutting device for a tire characterized by that. The rotating plate rotating means includes a roller that contacts the surface of the tire and rotates by a relative movement between the surface of the tire and the frame, and a power transmission mechanism that transmits the rotational force of the roller to the rotating plate. Consists of
The spew cutting device for a tire according to claim 2, wherein: The blade portion extends linearly,
The extending direction of the blade portion intersects at an angle smaller than 90 degrees with respect to the direction in which the spew is brought close to the blade portion by the locking portion by the rotation of the rotating plate,
The spew cutting method for a tire according to claim 2 or 3, wherein the spew is cut. The cutter includes a disk-shaped main body that is rotatably supported by the frame,
The blade portion is provided on the outer peripheral portion of the main body portion,
Cutter rotation means for rotating the main body is provided,
The tangent line on the blade portion at the point where the direction in which the spew approaches the blade portion by the rotation of the rotating plate and the blade portion intersects the direction in which the spew approaches the blade portion is 90 degrees. Intersect at a smaller angle,
The spew cutting method for a tire according to claim 2 or 3, wherein the spew is cut. Further comprising guide means for contacting the surface of the tire and maintaining a gap between the surface of the tire and the blade portion,
The spew cutting device for a tire according to any one of claims 2 to 5, wherein A heating means for heating the cutter;
The spew cutting device for a tire according to any one of claims 2 to 6, wherein A spew cutting device that is attached to a tire rotating device that rotates the tire and protrudes from the surface of the tire,
A rotating plate having a locking portion that can be locked to a spew on the outer peripheral portion, a rotating plate rotating means for rotating the rotating plate, a cutter having a blade portion, the rotating plate, and a rotating plate rotating means A frame that supports the cutter and is attached to the tire rotating device;
One surface in the thickness direction of the rotating plate is disposed close to the surface of the tire,
The cutter is configured such that the root of the spew located on the movement locus of the locking portion that moves by rotation of the rotating plate between one surface in the thickness direction of the rotating plate and the surface of the tire is the blade portion. Is arranged to be cut by
The rotating plate rotating means is engaged with the spew located on the movement locus, and the spew engaged with the engaging portion while preventing the spew of the spew in a direction away from the blade portion is attached to the blade portion. Rotate the rotating plate in the approaching direction,
A spew cutting device for a tire characterized by that. The tire rotating device extends in the width direction of the tire supported by the tire rotating device, and both ends of the extending direction are provided so as to be swingable and adjustable in a direction of separating and approaching the tire with a center as a fulcrum. With a guide,
The frame is disposed on the guide so as to be movable along the extending direction of the guide.
The tire spew cutting device according to claim 8.

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