JPS583852A - Finishing device for surface of cylindrical body made of rubber - Google Patents

Abstract

PURPOSE:To enable the stable and long-term operation of a finishing device by detecting vibrations of a touch roller caused by strike of a resilient needle- shaped projection against the touch roller in contact with the surface of the cylindrical rubber article. CONSTITUTION:A head assembly 2 is moved to a cylindrical rubber article 4 by means of a cylinder 11 and the touch roller 25 is pressed against the article 4 by means of a cylinder 21. With this setting, the article 4 is rotated and the roller 25 is moved from the center of the article 4 to its circumferential area at a certain speed. When a resilient needle-shaped projection exists on the surface of the article 4, the projection strikes against the roller 25 to vibrate it. This vibration is detected by a vibration detector 5. After a certain period of time, the roller 25 is withdrawn by means of the cyliner 21 and the head assembly 2 is tilted counterclockwise around an axis 32 to remove the roller 25 from the article 4. A cutter 26 is then pressed against the article 4 so that the projection is cut out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the following features: 2! The present invention relates to a finishing device that detects and removes elastic needle-like protrusions present on the surface of a circular rubber object such as a tire.

Since the pneumatic tire after vulcanization has a large number of bends (elastic needle-like protrusions) in the side fall portion on its surface 41, it is necessary to detect and remove the bends with a finishing device. Conventional finishing equipment of this type has a light transmitter and a light receiver facing each other, and uses an optical detector to detect a bend when the ftS incident on the receiver is broken. When the cutter detects a bend, the cutter is pressed against the tire and the cutter is advised to bend.

However, the area around the detector is generally dusty.

If an optical detector is used as described above due to the presence of cutting waste, the light transmitter and receiver will become dirty due to the dust, etc., resulting in a decrease in detection ability, and the detector will not operate stably for a long period of time. There was a drawback that maintenance management was troublesome.

The main object of the present invention is to provide a touch roller that comes into contact with the surface of a circular rubber object, and to detect vibrations of the touch roller caused by contacting an elastic needle-like protrusion with the touch roller. The object of the present invention is to provide a finishing device that operates in a manner that allows for easy maintenance and management of the detector.

The present invention will be explained below based on an embodiment shown in one drawing.

The finishing apparatus shown in FIGS. 1 and 211 includes a head moving section 1 supported by seven frames (not shown), a head section 2 having a cutter for bend cutting, and a head section 2 that is connected to the head part. The connecting portion 3 is connected to the tire 40 so as to be swingable in the radial direction.

The head moving unit 1 includes a base 10 that is moved by a moving mechanism (not shown) from the center 0 of the tire 4 toward the outer circumference (or vice versa) during finishing processing, and a head that is attached to this base. A cylinder 11 with nitrogen pressure (or oil pressure λ) that moves the part 2 in the direction of approaching and separating it from the tire 4.

The piston rod 12Kal of this cylinder is provided with a movable base 14 connected via a hand 13, and a guide shaft 15.15 for guiding the movement of this movable base. Guide shaft Is, 15
is slidably penetrated through the holder II, 16 provided in the eight units 10.

This head movement s1 is achieved by moving the base 10 by the above-mentioned moving mechanism, moving the entire body in the same direction, moving the machining head part 2 in the same direction, and moving the cylinder 11. The moving table 14 is moved in a direction toward and away from the tire 4, and the head portion 2 is moved in the same direction.

The head unit consists of a support base 20 which is tiltably supported on the movable stage 14 of the head moving unit 1 via the connection part 3, and a hydraulic (or! atmospheric pressure) cylinder 21 attached to one end of this support base. and.

An L-shaped four-ra support 23 is attached to the piston rod 22 of this cylinder, and a touch four-9 is rotatably hooked to a shaft 24 whose one end is fixed to the roller support.
25, a cutter 26 for pen cutting, and a cutter support 27 that supports the cutter in a tiltable manner relative to the support base 20.

The V#-piece 25 is longer than the width W of the cutter 26, and extends from the center 0 of the tire 4 to the outer periphery in five directions, that is, in the direction of movement of the finishing device in the finishing process W#. In this example, the rear end 25a is at the same position as the rear end of the cutter 2@, but the tip 258 is more centered than the tip of the cutter 2@. The cutter 2I has a blade with touch roller 2.
It is provided on the back 11 of the touch row'y25 so as to be parallel to the touch row'y25. The cutter support 2T includes a pair of support arms 2788271 fixed to the support base 20 at a distance from each other;
It includes a swinging body 2Tb to which a cutter 26 is fixedly attached, and a shaft 27c swingably connecting the swinging body to the support arms 2T-, 21. The cutter 26 is attached to the cutter support 2
7 allows the touch roller 25 to swing in the longitudinal direction about the shaft 27c, so that when pressed against the tire 4, it contacts the tire surface uniformly.

The connection lI3 includes a support body 30 having a U-shaped cross section fixed to the movable table 14, a swing table 31 attached to the support table 20KII,
The swing table is provided with a shaft 32 which is swingably connected to the support stand 30, and a bin 33 fixed to the swing stand 31. The bottle 33 is loosely fitted into an arc-shaped long hole 34 formed on the side of the support body 30, and limits the swing range S of the head portion 2. The head portion 2 is capable of swinging in the radial direction of the tire 40 about the shaft 32, that is, in a direction perpendicular to the swinging direction of the cutter 26.

The roller support 23 of the head section 2 is provided with a vibration detector 5 that detects vibrations of the touch roller 25 caused by the pend force colliding with the touch roller 25. This vibration detection-5 can use an electrical or mechanical switch that closes (or opens) when the roller support body 23 vibrates as the touch roller 25 vibrates.

The tire 4 is rotated at a constant speed about its center 0 during finishing. A tire beam 5, etc. is mounted and set in the position 11 with internal pressure applied. Therefore, although the sidewall portion of the tire is shown as being flat in FIG. 1, the sidewall portion of the actual tire has a curved surface.

Reference numeral 6 denotes a white ribbon formed on the sidewall portion of the tire 4, and the white ribbon portion and its vicinity are generally made smooth so that no bends exist. In this example, the amount of protrusion X of the touch roller 25 with respect to the cutter 26 is the same as the width of the area created so that no bend exists near the white rib y.

In this finishing device, first, the head 1iS2 is excited by the cylinder 11 towards the tire 4, and the touch roller 2
5 is set in a state where it is pressed against the tire 4 by the cylinder 21. In this state 11, as shown in Figure 2, the head portion 2 is tilted clockwise at the stem 211, and the cutter 26 is separated from the tire 4.

Next, in the state 1 in which the tire 4 is moving at a constant speed around the center O, this finishing device cuts the edge of the center 0 with the touch roller 2s in contact with the side wall of the tire. From there, it moves towards the outer periphery at the speed of the current. l! [If there is a tire surface mK bend,
With the tire ll@, the pend touches the roller 21.
Since the touch roller 26 vibrates intermittently at 1, the presence of the pend can be detected by the vibration detector 5.

When the vibration detection II5 detects the presence of the pend.

In this finishing device, after a predetermined time t1 from the time when the pend is detected, the cylinder 21 is reversed and the Talachie 225 is moved to the second position.
aK shows you jKl1 times.

As a result, the head part 2 is aligned with the axis 321 - the 21st
1, the cutter 4 is tilted counterclockwise, and the cutter 4 is pressed against the tire 4 instead of the touch roller 25 separating from the tire 4. As a result, the pend is removed. As long as the pend is not removed, the touch roller 25 will move as the tire 4 turns.
Since it collides with, its presence is detected by vI111IIIIL-5 from the time it is detected until it is excised.

The above time t is @the finishing device has a cutter width of 260 W
This is the time required to move toward the outer circumference of the tire.

As a result, the outer circumference of the tire (!
! forward in the moving direction of the finished prosthetic] and white ribbon 6
Even if there is a pend near the cutter 2@ is pressed by the IK tire 4 that passed through the white ribono Iv,
White lipo 3'@, 41Kjllll by cutter 21
There is no risk of @ cutting the l. When the pend is removed, the touch roller z II F) 11111+ due to the pend II- will disappear.

The output compensation of the tIklI detector 5 becomes non-pend.

As a result, when the pend is cut, this finishing device detects vibration and the 5-is bead is not detected, so the cylinder 21 is immediately driven again and the touch roller 2S is pushed out, and as a result, the head 112 is moved to the shaft. lI2 centered on 32
At 11, the cutter 2I is tilted clockwise, and the cutter 2I is moved away from the tire 24 instead of the touch a-ra 2s being suppressed by the tire 4. As a result, the cutter 26 cuts off the pend with the blade at the edge on the outer circumferential side of the tire and immediately leaves the tire 4, so even if the pend is located closer to the center of the tire than the white ribbon 6 and near the white ribbon 6. Even if the cutter 2@ is used, the corner of the white ribbon@41 is not cut off by the cutter 2@.

As in the finishing device described above, if the cutter 26 is pressed against the tire 4 only when the bend is detected, the cutter 4
This is preferable because unnecessary parts are not cut and the life of the cutter is extended.

In the above-mentioned embodiment, the head part 2 is tilted about the shaft 32 by the protrusion and retraction of the piston rod of the cylinder 21, and either the touch row 92B or the cutter 26 is pressed against the tire 4. It is also possible to connect the cylinder 21 with a force greater than that of the cylinder 11 and press either the touch pad 225 or the cutter 26 against the tire 4 for 5K. The place is.

When the touch I-2s is pressed against the tire 4.

When the head s2 pushes the piston head 12 through the 1# shift stand 14 and the hand 13, the cutter 26 also moves away from the tire 4, and when the touch roller 25 moves away from the tire 4, the cutter 26 is suppressed by the tire 4. Also, instead of the cylinder 11°21, the head part 2. The touch roller 21 may be moved 5K with respect to the tire.
There is no need to make the touch cutter 25 longer than the width of the cutter, and when the length of the touch cutter 25 is less than the width of the cutter, the cylinder 21 should be re-driven after the bed is cut out and then inspected at regular intervals. Bye.

An example of the electric g+us that controls the V cylinder 21 by the output signal of the vibration generator 5 is rattan! In IIK and llIm, 40 is a timer relay, 41 is a relay that detects that the cutter should be used to compress the tire KIIIP, and 42 is a relay that detects that the bend has been cut.

The relay 40 is a start-up relay that launches after the above-mentioned time period t has elapsed since the trigger (energized) has elapsed.
The contact point 43 of the vibration detector 5 described above is inserted in series in the current supply circuit to the coil. This contact point 43 is
This is a normal contact that closes only while detecting the The relay 41 is a self-holding relay, and when the coil is energized aI
In IIK, the normally open contact 44 of the relay 40 and the normally closed contact 45 of the relay 42 are directly inserted, and a self-holding contact 46 is provided in parallel with the contact 44.

Relay 42 is a relay for the dragon, and the overcurrent to the coil is 1m! A normally closed contact 4T of the relay 40 is inserted in the .

In this III, the relay 40 is launched after a certain period of time eclipse 1 after the contact point 43 is closed, and falls immediately after the 111 point 43 has gone through. Therefore.

While the relays 4O-jX are being launched, the relay 41 is launched and the relay 42 is dropped.

The normally open (or normally 11FI) contact of the relay 41 is inserted into the control WA path of the electric valve (not disclosed) that switches the oil pressure (or air pressure) of the cylinder 21 described above. The solenoid valve 5 is controlled so that the piston of the cylinder 21 is retreated and the cutter is pressed against the tire only while the cutter 41 is being launched.

When the length of the touch roller 2S is equal to or less than the width of the cutter 26, the relay 42 can be set as a rising time element relay that closes the contact 41 and launches at the above-mentioned time interval tl@.
Alternatively, the relay 41 may be a falling relay that falls after a certain period of time has passed after the contact 45 has made one circuit.

As described above, the present invention can be applied to one circular object! A touch roller is provided that comes into contact with Iw, and the elastic needle-like projections are centered on the touch roller so that the vibrations of the touch roller are used to detect the elastic needle-like projections. Even if there is dust or the like in the vicinity, the detector can operate stably for a long period of time, and the detector can be easily maintained.

[Brief explanation of the drawing]

Dew 11Il is a Confucian diagram showing an example of the finishing equipment of this WRK, and Fig. 2 shows the correct version of the finishing equipment. ! . No. 5 is a schematic diagram showing an example of an electric circuit for use in a V cylinder. 1: Head moving part, 2: Head s, 3: Connection I1.4:
Tire, 5: Vibration detection 11.20: Support stand, 21 Nijilinda, 2s: T-ra support, 25: Touch ■-2, 26
: Cutter. 40.41.42: Relay. Patent originator: Yokohama Rubber Co., Ltd.

Claims (1)

[Scope of Claims] (1) A support base, a touch roller that comes into contact with a circular object, a blade that supports the touch roller, and a blade S that extends in the longitudinal direction of the touch roller. The elastic needles are attached to the support base so that A cutter that detects vibrations, an Il-detection unit that detects the elastic needle-like central object by using the vibrations of the touch IC, and an Il-detection unit that detects the elastic needle-like object based on the signal from this vibration detector. A rubber-shaped circular object display device comprising: means for moving the touch roller in a direction that mimics the circular object through a support, and moving the cutter in the opposite direction to the movement of the touch roller. finishing equipment. [Yes] The above-mentioned - Tsuchirotsu is better for circular objects than the cutter! The finishing device according to claim II #11, which protrudes in the working direction of the finishing device. (2) The moving means moves the touch roller away from the circular object after a certain period of time when the vibration detector detects an elastic needle-like object. Finishing equipment for Atsushi Section 1 or 1G Section 2. (4) The touch member 2 is a means for suppressing the touch object 2 into a circular object when the vibration detection IBS no longer detects an elastic needle-like protrusion or after a certain period of time from that time. The finishing device according to item 3. (2) The fixed time M is the same as the time #tP1 for the finishing device to move the circular object by a distance corresponding to the width of the cutter. The finishing device according to claim 3. (6) Claims 1 to 3, wherein the cutter is attached to the support base so as to be tiltable about a straight line parallel to the longitudinal direction of the touch roller. The finishing device according to any one of Item 5.