JPS618601A - Method and device for spew derivation position of tire - Google Patents

Abstract

PURPOSE:To finish a variety of tires efficiently by providing a spew derivation position detector, tire kind decision device, and cutter device. CONSTITUTION:An air cylinder 272 is put in operation to press the rotary roller 275 of a tire outer diameter detecting means against a tire W which is rotated while fitted in the upper (lower) rim 110(120) of a tire supporting device 100. Then, the spew derivation position detector 203 arranged coaxially with a ball screw 262 on which the tire outer diamter detecting means is supported is driven 266 to move from the bead-side position of the tire W and stop at the outer diameter position of the tire W. Then, an air cylinder 270 which constitutes the detector 203 is operated to press the roller of the spew detector 271. In this state, an air cylinder 264 is operated to move the detector 271 to the bead side of the tire W, thereby detecting the 1st spew derived on the outer peripheral surface of the tire W. This detected value is inputted to a tire kind decision device and the cylinder 264 stops; and the cutter device 300 is operated in this state, thus finishing the tire.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and device for detecting the spew position of a tire, and more specifically, to a method for detecting the spew position of a tire after vulcanization molding. The present invention relates to a spew derived position detection method and an apparatus therefor.

[Prior art]

Conventionally, methods and devices for automatically cutting and removing spews, pars, etc. derived from the surface of a tire after vulcanization molding are disclosed, for example, in Japanese Patent Publication No. 38-7220 and Japanese Patent Publication No. 51.
-20553 Publication, Japanese Patent Publication No. 53-9634, Japanese Patent Application Publication No. 1988-133058, Japanese Patent Publication No. 1987-1265
Publication No. 69, Special Publication No. 56-6857, Special Publication No. 1983
-13512 Publication 1 Japanese Patent Publication No. 53-1542.

Various proposals have been made, such as in Japanese Utility Model Application Publication No. 51-107868.

That is, in conventional tire finishing equipment, the tire is rotated by driving one of at least three support rollers that contact and support the tire tread, and the rotating tire Following the cross-sectional contour of
The comb-shaped knife of the cutter device is brought into pressure contact with a counterbalance or an air cylinder to automatically cut and remove spews, pars, etc. derived from the tire surface.

However, no device has yet been proposed that automatically detects spews, cracks, etc. that develop on the surface of a tire after vulcanization and automatically cuts them using a cutter device.

That is, the knife of the conventional cutter device has a fixed operating order within a preset range, and is mechanically limited to a fixed operating range. Therefore, it has been extremely difficult to use a machine that operates in the same way for a wide variety of tire sizes. In particular, if a snow tire with an acute ridgeline design on the tire shoulder or a letter tire with a highly convex design on the side of the tire is finished using the same machine, there may be serious damage to the tire surface. There were problems such as cutting damage and poor finishing.

Therefore, in the case of conventional equipment, it is not possible to produce a mixture of general tires and special tires at the same time, and there is no means to automatically detect spew, making it difficult to produce a wide variety of tires. If this is done, it is necessary to install multiple finishing machines to match the tire, and to make adjustments to change stages according to the production plan. There was a problem.

[Purpose of the invention]

This invention was devised by focusing on such conventional problems, and its purpose is to automatically detect spews, firmness, etc. derived from a tire after vulcanization molding. The present invention provides a tire spew derived position detecting method and a spew derived position detecting device, which output the determined value to a tire type determination device, a cutter device, etc., and efficiently finish a wide variety of tires.

Another object of the present invention is to use the same machine to finish snow tires in which the design shape of part of the shoulder of the tire forms an acute ridgeline, and letter tires in which the letters and design on the side of the tire have high protrusions. Another object of the present invention is to provide a tire spew derived position detection method and a spew derived position detection device that can obtain a uniform finish without causing serious damage to the surface of the tire or causing poor finishing.

[Structure of the invention]

In order to achieve the above object, the present invention inflates a vulcanized tire by fitting it into a split rim provided on a tire support device, and detects the outer diameter of the tire at the trend part of the inflated tire. The rotating roller of the means is brought into contact to define the tire outer diameter position, and then the spew derived position detector is moved in the tire radial direction and horizontal direction from the tire bead side position to the tire outer diameter' position and stopped. Next, operate the spew derived position detector in a direction perpendicular to the tire radial direction to press the spew detector against the sidewall of the tire, and from this state, move the spew detector from the tire's outer diameter position to the bead position. When the spew detector is moved to the side and the first spew derived position is detected, the spew detector is stopped or put on standby, and the detected value is output to the tire type determination device.

In addition, this invention inflates a vulcanized tire by fitting it into a split rim that is rotatably and movably provided on a machine frame, and also inflates a spew derived from the vulcanized tire. A spew derived position detection device detects a derived position, and the spew derived position detection device includes a spew derived position detection device that detects a derived position along a guide shaft provided on a side of the machine frame along a radial direction of a tire fitted to the split rim. It is movable and
A rotary roller that presses against the outer diameter of the tire to set the outer diameter position of the tire, and a rotary roller that is slidably provided coaxially with the guide shaft, movable in the rim width direction, and that and a detector equipped with a detection means for detecting a spew derived from the outer diameter part, and the detector is moved from the outer diameter position of the tire and is activated at a position where the first spew derived position is detected. The gist is that a detection means for stopping or waiting is provided.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

1 and 2 show a front view and a side view of a tire finishing device 10 embodying the present invention.
A tire supply device 40 including a conveyor 20, a centering device 30, etc. is installed on the side of the vehicle.

The machine frame 11 of the tire finishing device 10 includes a tire support device 100 that rotatably fits the vulcanized and molded tire W conveyed from the tire supply device 40 and inflates the tire W. A detection device 200 that detects the type, outer diameter, spew, pari, etc., and a tire W
It is composed of a cutter device 300 for cutting and removing spews, haris, etc. derived from the side portions and trend portions of the
A tire type determination device 400 is provided outside the machine frame 11 to determine the type of tire W based on the detection signal from the detection device 200.

As shown in FIGS. 3 and 4, the tire support device 100 has a hollow cylindrical upper rim 1 divided into two parts, an upper frame 12 and a lower frame 13 of a machine frame 11.
10 and a lower rim 120, a drive shaft 130 and a driven shaft 140 are mounted in a straight line.

The drive shaft 130 has a hollow cylindrical case 132 inside a guide member 14 provided on the upper frame 12, and a threaded portion 133.
A center shaft 135 is fitted inside the case 132 so as to be freely adjustable in position, and a center shaft 135 is provided inside the case 132, the upper and lower portions of which are rotatably supported through bearing members 134a, 134 and b.

A drive motor 150 installed on the upper frame 12 and sprockets 151, 1 are connected to the upper end of the center shaft 135.
52. It is connected via the chain 135a, and the center shaft 1
The upper rim 110 is attached to the lower end of the rim 35 via a rim holder 136.

Further, an air supply passage 137 that constitutes a tire inflation mechanism is formed in the center of the center shaft 135, and the tip of this air supply passage 137 opens at the center of the upper rim 110, and the rear end is not shown. Connected to an air supply source via a low rigidity joint.

Further, the driven shaft 140 supported by the lower frame 13 is connected to the air cylinder 14 attached to the lower frame 13.
A support plate 143 is attached to the tip of the rod 142 of No. 1, and a bearing member 144 is mounted on the support plate 143.
A rim holder 145 to which the lower rim 120 is attached is rotatably attached.

A guide plate 146 that guides the lower surface of the tire W is attached to the upper end of the lower rim 120, and a plurality of ball casters 147 are rotatably implanted in the guide plate 146. The lower frame 13 is attached to the lower surface of the support plate 143 attached to the tip of the rod 142.
A plurality of (three in this embodiment) guide rods 149 passing through guide holes 148 provided in the guide hole 148 and a rotation prevention rod 149a are vertically provided. Above support plate 1
Positioning means 160 for regulating the lower limit of the lower rim 120 is installed on the side of the lower rim 120 . Positioning means 16
0 is an air cylinder 161 and this air cylinder 161
Stopper plate 1 attached to the tip of rod 162 of
63, and when inflating the tire W fitted and held by the upper and lower rims 110 and 120, the lower rim 120 is regulated so as not to fall below a certain position, and the interval between the upper and lower rims 110 and 120 is adjusted. It is configured to set a wide range of.

Missing number, ', To explain the operation of the tire support device 100, the tire W after vulcanization and molding, which has been conveyed from the conveyor 20 of the tire supply device 40, is placed on the lower rim 120 of the tire support device 100 at an arbitrary position. Supplied individually. When the tire W is supplied onto the lower rim 120, the air cylinder 141 is extended and the driven shaft 140 is raised to separate the lower rim 120, which is supported on the support plate 143 via the rim holder 145, into two parts. In addition to being fitted and held with the upper rim 110, the upper and lower rims 110',
Position the tire W to match the center of the axis of 120.

At this time, the guide rod 149 vertically provided on the lower surface of the support plate 143 is pulled out upwardly from the guide hole 148 provided in the lower frame 13, and at the same time, the positioning means 1
The air cylinder 161 of 60 is expanded and operated to close the guide hole 148 provided in the lower frame 13 with the stopper plate 163.

In this state, when the air X is supplied into the tire W from the air supply passage 137 constituting the tire inflation mechanism to inflate the tire W, the driven shaft 140 supported by the air cylinder 141 is moved While fitting and holding the lower surface of the tire W by inflation, the upper and lower rims 110 and 120 slowly slide down to a predetermined interval, and the lower end of the guide rod 149 hits the stopper plate 163. It will stop when it comes into contact with the object.

Although the driven shaft 140 is pushed back downward by the inflation of the tire W, the air cylinder 141 holding the driven shaft 140 maintains sufficient supporting force against the axial thrust caused by the inflation of the tire W. Therefore, it does not fall suddenly.

As described above, when the tire W is inflated, by setting the gap between the upper and lower rims to be wider, for example, the fifth
The tire W, which was fitted to the upper and lower rims 110 and 120 in the state shown in the figure, has been moved so that the sidewall portion W3 of the tire W forms a plane in the radial direction of the tire W, as shown by the dashed line in FIG. As a result, the Spew S, which was derived from the sidewall part W3 of the tire W, is replaced by the upper rim 110.
It is possible to easily cut and finish using a knife 310 of a cutter device 300, which will be described later, without being disturbed by.

As described above, when the inflation of the tire W is completed, the drive motor 150 installed on the upper frame 12 is driven, and this rotational driving force is applied to the sprocket 151,
152. The center shaft 1 of the drive shaft 130 via the chain 135
35, and rotates the tire W, which is fitted and held on the upper and lower rims 110, 120, at a predetermined rotational speed.

Next, the detection device 200 for detecting the type, outer diameter, spew, paris, etc. of the tire W includes a block pattern detector 2゜1 for detecting the block pattern of the tire, as shown in FIGS. 6 to 11. , a letter detector 202 for detecting a letter tire, a spew derived position detector 203 for detecting a spew derived position of the tire, and a tire outer diameter detecting means 204.

The block pattern detector 201 detects the tire W(7).
FIG. 6 is a detector for quickly determining the type of tire W by detecting a recess P formed in a shoulder portion W2, and its configuration is shown in FIG.

It is constructed as shown in FIGS. 8 and 9.

That is, the block pattern detector 201 includes a recess detector 210 in which a light beam projector 211 and a light receiver 212 are arranged facing each other at a predetermined interval, and the recess detector 21
The light beam 211 output from the light beam projector 211 of
The recess detector 21
This block pattern detector 201 is installed in the vicinity of the tire support device 100 so as to be able to move toward and away from the tire support device 100 and to move up and down. Further, the recess detector 210 is electrically connected to a tire type detector 230 shown in FIG.

In the embodiment of the present invention, a narrow-field photoelectric switch is used as the recess detector 2'10, and the light beam 211a output from the light beam projector 211 toward the light receiver 212 is directed toward the shoulder of the tire W. Only when the light reaches the light receiver 212 after passing through the recess P formed at a certain interval in W2, the signal is converted into an electric signal by the tire type determining device 2.
30 can be output.

Therefore, when the tire W is attached to the tire support device 100 and rotated, the shoulder portion W2 of the tire W
The number of recesses P formed in the tire can be detected by a count circuit 231- provided in the tire type determination device 230.

Note that the light beam 211a output from the light beam projector 211 may be a visible light beam or a laser beam.

Next, the above-mentioned detector center device 220 has a roll mounting body 221 having a substantially U-shaped cross section, and a roll mounting body 221 that is rotatably supported between the left and right arms 221a and 221b of the body 221. The positioning roll 222 and the position of the positioning roll 222 relative to the tire W are determined by the body 221. The sensor center device 220 is attached to a rod 226 of an air cylinder 225 disposed parallel to the machine frame 11, and is configured with an air cylinder 224 that is adjusted via an angle adjustment rod 223. The configuration is such that the angle of contact of the roll 222 with the tire shoulder portion w2 can be freely adjusted. The above-mentioned roll mounting is carried out on each of the left and right 7-m 2 of the body 221.
21a and 221b, the light beam projector 211 and the light receiver 212 of the recess detector 210 are arranged so that the light beam projector 211 and the light receiver 212 are parallel to the positioning roll 222, that is, the light beam is outputted from the light beam projector 211 toward the light receiver 212. The light beams 211a are respectively attached to the positioning rolls 222 so as to be parallel to the tire side surfaces. Further, each attachment position is such that the light beam 211a can pass through the recess P formed in the shoulder part w2 of the tire W.

Therefore, the positioning of the detector center device 220
222 is brought into contact with a predetermined position of the shoulder part w2 of the tire W at a predetermined angle θ, so that the light beam 211a output from the light beam projector 211 of the recess detector 210 is brought into contact with the shoulder part w2 of the tire W at a certain position. It can pass through the recess P formed in the portion w2.

Further, as shown in FIG. 9, the tire type determiner 230 includes a count circuit 231 that integrates and counts the electrical signals sent from the recess detector 210, and a shoulder detector circuit 231 that integrates and counts the electrical signals sent from the recess detector 210, and a shoulder detector circuit 231 that integrates and counts the electric signals sent from the recess detector 210. A setting circuit 232 that can set the number of recesses P in the portion W2, and the counting circuit 2.
a comparison and determination circuit 233 that determines the type of tire W by comparing the counting signal from 31 with a set value set in a setting circuit 232; and a determination signal that outputs a determination signal based on the determination by this comparison and determination circuit 233. The circuit 234 determines the type of tire W based on the detection signal of the recess P formed in the shoulder portion W2 of the tire W by the recess detector 210 described above, and uses this determination signal in the next process. The information is configured to be output to the tire type determiner 400.

Next, a method of determining the type of tire W using the block pattern detector 201 will be described.

First, the detector center device 220 of the block pattern detector 201 is operated on the tire W rotatably supported by the tire support device 100, and the recess P formed in the shoulder part W2 of the tire W is detected as a recess. It is set so that the light beam 211a output from the light beam projector 211 of the device 210 passes through the light beam 211a at a certain position. Then, from this state, the tire support device 100 is activated to rotate the tire W at a predetermined speed, and the concave portion detector 210 and the tire type determination device 230 are energized to start their operation. Then, the light beam 211a outputted from the light beam emitter 211 of the recess detector 210 toward the light receiver 212 passes through the recess P formed at a distance in the shoulder part W2 of the tire W and reaches the light receiver 212. Only when this is reached, it is converted into an electric signal (pulse), that is, a recess detection signal is output to the tire type determiner 230.

The recess detection signal is integrated as the number of recesses P appearing within a predetermined time by a counting circuit 231 in the tire type determination device 230, and is transmitted to a comparison and determination circuit 233. The type of tire W is determined by comparing it with preset recess information of the tire to be determined.

This judgment information is then sent to the judgment signal circuit 234,
From here, it is outputted to the tire type determiner 400 as a determination signal.

Next, a letter detector 202 detects the letter tire.
This detects the so-called letter LT formed on the sidewall portion W3 of the tire W, which indicates the tire type, manufacturer, etc., using alpha vents, numbers, etc., and is configured as follows.

That is, the letter detector 202 detects the sidewall portion W of the tire W, as shown in FIGS. 6 and 10 to 13.
31j,! A rotary roller 241 is supported by a bracket 242 and rotatably provided at the tip of the j, and this bracket 242 is movable up and down via two guide shafts 244 that slide within a guide housing 243. ing. The guide housing 243 is attached to a main body casing 245 of the letter detector 202, and inside the main body casing 245 there is also a housing connected to the bracket 242 via a floating connector 246 to move a drive shaft 247. An air cylinder 248 is provided.

Furthermore, the guide shaft 244 and the guide housing 2
43 and a bearing 249 provided therebetween, it can easily slide in the axial direction, but is firmly supported in directions other than the axial direction so that it does not swing. 250 → This is a dustproof bellows.

In the present invention, an acceleration sensor 251 is attached to the bracket 242 of the letter detector 202 configured as described above. As this acceleration sensor 251, for example, a piezoelectric element type sensor can be used, and the vertical vibration of the bracket 242 is detected as acceleration.

Therefore, the tire W is supported by the tire support device 100 and rotated, and then the air cylinder 2 shown in FIG.
48 to push out the drive shaft 247 from inside this air cylinder 248, and when the bracket 242 is lowered and the rotating roller 241 is brought into pressure contact with the sidewall W3 of the tire W, this rotating roller 241 also rotates due to the rotation of the tire W. do. Each time the letter LT provided on the sidewall W3 of the tire shown in FIG. 10 passes the rotating roller 241, the acceleration sensor 251 installed on the bracket 242 outputs a detection signal.

The letter detector 202 detects the letter height of the tire W as the magnitude of the acceleration signal.

FIG. 12 is a block diagram showing an embodiment of a signal processing process for using the acceleration signal A extracted as described above in an actual tire manufacturing process.

In this embodiment, the acceleration sensor 251 has an amplifier 252.
is connected and amplified by about IO times, first passed through a low-pass filter 253 to remove the mechanical noise from the acceleration signal A, and further amplified by 10 times by an amplifier 254 to correct the signal output attenuated by the filter 253. amplify the degree. Next, the signal is integrated using an integrator 255,
Convert acceleration signal A to speed signal ■.

This speed signal ■ is input to the comparator 256, and the setting device 2 connected to the other input terminal of this comparator 256
57. This comparator 256 functions to output a signal H when the speed signal ■ is larger than the reference signal R, and to output a signal R when the speed signal ■ is smaller than the reference signal R, for example.

In this embodiment, the H or L signal output from the comparator 256 is branched into two branches, one of which is input to a tire type determiner 400 to be described later, and the other is input to a display device equipped with an indicator such as a lamp. 258. This display device 25
8 may be configured such that, for example, when an H signal is input from the comparator 256, the display is turned on, and when an L signal is input, the display is not turned on.

Note that in the letter detector 202, the acceleration signal A
was converted into a speed signal V to facilitate comparison with the reference signal R from the setting device 257, and the acceleration signal A
Of course, it is also possible to select a tire W with a high letter height. In the case of the above embodiment, the setting device 257 can be, for example, a potentiometer made of a variable resistor. In addition, the setting device 257 is set in consideration of variations in letter height.
All you have to do is decide the output level.

Furthermore, if there are several types of tire letter heights and it is desired to select them, it is possible to do so by preparing as many setters and comparators as desired.

That is, by using the tire letter height detection method according to the present invention, the tire letter height can be extracted as an acceleration signal according to the letter height, and this signal can be used for various types of tire selection.

Further, the arrangement of letters L such as letters and numbers in the design of the tire W is arranged in an appropriate size and pinch for the design, and usually there are about 20 to 30 letters per circumference of the tire surface. Therefore, the rotation speed of the tire is 4 rotations per second (4H
z), the frequency of the acceleration signal generated in the sensor by letters or the like is about 80 to 120 Hz. On the other hand, the mechanical systems such as the tire support device 100 and the letter detector 202 have sufficiently increased strength and rigidity, so the frequency of vibration generated in the mechanical systems is higher than an octave, so noise signals caused by the mechanical systems are can be removed by the low-pass filter 252.

In this way, by extracting only the acceleration signal detected by the sensor and integrating the signal for one rotation or more of the tire, it is possible to capture the acceleration signal due to the letter LT with greater emphasis.

Therefore, according to the method of the present invention, it is possible to accurately determine and select tires that have a bulge of a predetermined height with letters such as letters or designs.

Next, the spew derived position detector 203 and the tire outer diameter detection means 204 of the tire W are for detecting the spew S, pari, etc. derived from the tire outer peripheral surface after vulcanization molding, and are shown in FIG. It is constructed as shown in FIG.

That is, the spew derived position detector 203 and the tire outer diameter detection means 204 are vertically supported by support plates 26Qa, 260b, and nuts 261 fixed to the upper surface of each support plate 260a are connected to the machine frame. 11
It is slidably fitted into a pole screw 262 disposed parallel to the upper frame 12 of , and is slidably fitted into two guide shafts 262a via bearing members 262b.

Both ends of the pole screw 262 are attached to the upper frame 12.
The support plate 260b is rotatably supported via a bracket 263 and a bearing member, and one end of the support plate 260b has a
It is connected to a rod 265 of an air cylinder 264 installed horizontally on the upper frame 12.

The pole screw 262 is connected to a drive motor 266 and pulleys 267a and 267b installed on the upper frame 12.
The spew-derived position detector 203 supported by the support plate 260a moves along the pole screw 262 and the guide shaft 262a by the rotational drive of the drive motor 266.

The spew derived position detector 203 supported by the support plate 260a is composed of an air cylinder 270 and a spew detector 271 attached to the tip of a rod 270a of the air cylinder 270, and the spew detector 271 is attached to the side wall. A contact type detector (vibration sensor, microswitch, etc.) that is activated by the collision of the spew S derived from part W3 is used, and its specific configuration is similar to the letter detector 2 described in FIGS. 10 and 11 above.
Since the configuration is exactly the same as that of 02, the same reference numerals are given and the explanation will be omitted.

Further, the tire outer diameter detection means 204 supported by the support plate 260b is connected to the air cylinder 272 and this rod 2.
The rotating roller 275 is rotatably attached to the tip of the tire 73 via a bracket 274'', and the rotating roller 275 rotates while being rotatably pressed against the surface of the tire W.

A detector 276 defining a shoulder portion W2 of the tire W is attached to the lower part of the support plate 260b, and the detector 276 is located a predetermined distance away from the tire outer diameter detection means 204 toward the bead side of the tire W. installed in position. This detector 276 is generally connected to the shoulder portion W2.
It is set at a position 20 to 30 m closer to the tire bead than the tire outer diameter position within the range where the design is engraved.

Note that 277, 278, and 279 are the rod 270a of the air cylinder 270 and the rod 273 of the air cylinder 272.
This is a dustproof cover that covers the air cylinder 264 and the rod 265 of the air cylinder 264.

Next, the operation of the spew derived position detector 203 of the tire W and the tire outer diameter detection means 204 will be explained.

First, the upper and lower rims 110 and 120 of the tire support device 100
The air cylinder 272 is actuated to press the rotary roller 275 of the tire outer diameter detection means 204, which defines the tire outer diameter position, onto the tire W which is fitted into the tire W and is inflated and rotating. Next, the spew derived position detector 203, which is disposed coaxially with the pole screw 262 on which the tire outer diameter detection means 204 is supported, is connected to the drive motor 266.
is moved from a position on the bead side of the tire and stopped at a position on the outer diameter of the tire. and,
The air cylinder 270 constituting the spew derived position detector 203 is operated to press the roller of the spew detector 271 attached to the tip of the rod 270a. From this state, the air cylinder 264 is activated to move the spew detector 271 to the bead side of the tire and detect the first spew S derived from the outer peripheral surface of the tire W. This detected value will be described later. Suruta tire type determiner 40
It is input to 0. Then, the air cylinder 264 stops, and the spew derived position detector 203 stops moving and stands by.

From this state, the operation of the cutter device 300, which will be described next, is started.

First, the cutter device 300 is shown in FIGS. 2 and 7.

As shown in FIGS. 13 to 25, a crown cutter device 3 finishes the trend Wl (tread surface) of the tire W.
10, a side cutter device 320 for finishing the sidewall portion W3 of the tire W, and a shoulder portion W2 of the tire W.
and a shoulder cutter device 330 for finishing (see Fig. 24).

The crown cutter device 310 is shown in FIG.

FIG. 7, and FIGS. 13 to 17 (a), (b).

As shown in (c), it is provided via a guide mechanism 340 disposed on the side frame 14 of the machine frame 11.

The guide mechanism 340 is connected to the drive shaft 1 of the tire support device 100.
30 and the driven shaft 140, and a threaded shaft 342 formed with reverse threads in opposite directions from the center in the longitudinal direction, and one end of the threaded shaft 342. is sprocket 343. It is connected via a chain 344 to a drive motor 345 attached to the side frame 14 .

The guide mechanism 340 includes a tarun cutter device 310.
A pair of crown cars make up the.

The supporting mechanisms 350a and 350b support the support plates 311a and 3
11b and nuts 312a, 312b so that they can be approached and separated.

The crown cutter mechanisms 350a and 350b include a drive mechanism 360 and a cutter head portion 370a, as shown in FIG.
, 370b, and the drive mechanism 360 is the support plate 311a.

Two guide shafts 361a and 36 installed on 31ib
1b and an air cylinder 362. 2
The book guide shafts 361a and 361b are connected to the support plate 31
It is slidably installed inside a case 363 fixed on top of the guide shafts 361a, 311b via a thrust bearing 364, and the tips of the guide shafts 361a, 361b and the air cylinder 36
The cutter head portion 37 is attached to the tip of the second rod 365.
A fixed plate 371 on which 0a and '370b are installed is connected.

The cutter head parts 370a and 370b are shown in FIG.
As shown in a), (b) and FIGS. 16(a) and (b), a support bracket 372 having a U-shaped cross section is installed on the fixed plate 371, and this support bracket 372
A rotatable pivot shaft 373 is provided between the arms 372a.

A collar 374 is fitted and fixed in the center of the pivot shaft 373, and a cutter holder 377 is rotatably connected to a support bracket 375 provided on a portion of the collar 374 via a shaft 376.

The cutter holder 377 has a
A knife 378 as shown in Figure (C>) is attached, and the cutting edge 379 of this knife 378 is formed in a comb-like recess to guide the spew S, pari, etc. and cut it reliably. , the bottom side is the cutting edge 37 of the knife 378
9 is formed to become thinner toward the cutting edge portion 379 so as not to bite into the tire.

A cutter head portion 370a is provided at one end of the pivot shaft 373.
, weight 380 to keep 370b always in a horizontal state
a, 380b, and the other end side of the pivot shaft 373 has a pivot angle θ1 of the pivot shaft 373, that is, a knife 378.
An angle detector 381 is provided to detect the angle θ1 (see FIG. 24) at which the tire rotates from the trend portion W1 of the tire along the curvature of the shoulder portion W2 and to regulate its operating range.

Note that the weights 380a and 380b include a cutter head portion 370a that finishes the upper surface side and the lower surface side of the tire W;
370b and 370b are slightly different from each other in the position to maintain the horizontal state.
A stopper is provided at 70b to restrict the turning position.

Next, the side cutter device 320 and shoulder cutter device 330 that finish the sidewall portion W3 and shoulder portion W2 of the tire W are shown in FIGS. 2 and 7 (the upper side cutter device 320 and the shoulder cutter device 330). ), FIG. 18, FIG. 19, and FIG. 21 (showing the lower side cutter device 320 and shoulder cutter device 330), the upper frame 12 and the lower frame 1
One pole screw 322a, 322b and two guide tll17 doors 323a are arranged in parallel to each other via a bracket 321 at 3.

323b, respectively, so as to be slidable.

Pole screws 322a are arranged above and below.

322b is a sprocket provided at one end) 324
a, 324b and a sprocket 326 provided on a drive shaft 326 of a drive motor 325 fixed to the side frame 14 via a chain 327.
2b are synchronously driven to rotate, and the side cutter device 320 and shoulder cutter device 330 on the upper and lower sides of the tire W are synchronously moved in the same direction.

The structure of the upper and lower side cutter devices 320 and shoulder cutter device 330, which are slidably provided on one pole screw 322a, 322b and two guide rods 323a, 323b, respectively, is shown in FIG. Figure 7, 1st
As shown in FIGS. 8 to 23(a) and (b), it is composed of a drive mechanism 328 and a canter head part 329,
The configurations of both are shown in FIG. 13 and FIG. 15(a),
Crown cutter mechanism 350a explained in FIGS. 17(b) to 17(a), (b), and (c).

350b drive mechanism 360 and cutter head mechanism 370
The configuration is exactly the same as a and 370b.

That is, the side cutter device 320 that finishes the sidewall portion W3 and the shoulder portion W2 of the tire W
The cutter head 370 can be translated in a direction perpendicular to the rotation axis of the tire W, and at least one pair of cutter head parts 370a and 370b are provided on one side of the sidewall part W3 of the tire W.

In this embodiment, in order to further increase productivity, two cutter heads 370a are provided on one side of the sidewall portion W3.
, 370b, and are arranged in such a structure that they can be independently pressed against the sidewall portion W3 by the air cylinder 362.

The cutter head portions 370a, 370b of the crown cuff device 310 are respectively cutter head portions 370a, 370b.
0b, a canter holder 377 holding a knife 378 is rotatably attached, and an angle detector 381 for detecting the rotation angle is arranged at one end of the rotation shaft 373 of the cutter holder 377.

Further, between the fixed plate 371 that slidably holds the side cutter device 320 and the shoulder cutter device 330, and the support plate 260a that slidably holds the spew detector 271, there is a rotation axis of the tire W. Detectors 390a and 390b (phototubes in this embodiment) are attached to confirm the mutual positions from the center toward the outer diameter of the tire.

A side cutter device 320 and a shoulder cutter device 330 are arranged on each side of the sidewall portion W3.
The pole screws 322a and 322b are driven by the motor 3.
25, it can be rotated and slid in the direction of the outer diameter of the tire from the center of the tire rotation axis.

Note that the other configurations are the same, so the same reference numerals are given and explanations are omitted.

Next, the operation of the cutter device 300 configured as described above will be explained.

The crown cutter device 310 first finishes the tread surface W1 (tread Wl) of the tire W by the operation of each cutter device.
The cutter heads 1370a and '370b are driven by the drive mechanism 360.
The air cylinder 362 presses against the tire tread surface W1 (tread Wl). Subsequently, the cutter head section 370
a, 370b and the air cylinder 362 that presses them together
is the rotating shaft of the tire W (drive shaft 130 and driven shaft 140)
Since the pole screw 342 is rotated by the drive motor 342, the cutter head portion 370 is
a and 370b are moved along the tread curvature of the tire W.

The cutter head portions 370a and 370b include a knife 3.
A cutter holder 377 holding the cutter holder 378 is rotatably attached, and one end of the pivot shaft 373 of the cutter holder 377 has a pivot angle θ1 (see FIGS. 24 and 25).
A detector 381 is arranged to detect the rotation angle of the canter head portions 370a and 370b, and the rotation angle of the canter head portions 370a and 370b is specified in advance to this detector 381.

The designated number of turning angle θ1 is based on the tire type classification (second
Although it is possible to set a maximum of seven points depending on the number of points (see Figure 9), in practice, seven types of tires W can be supported by setting two points.

That is, the block designs of snow tires I and snow tires ■ are each set at predetermined angles.

In the case of general tire determination, as shown in Fig. 24, the tread surface W1 and the shoulder part W2 of the tire W are arranged in a smooth curve, so if the tire exceeds the angle set by the snow tire I and the snow tire ■, In other words, the cutter heads 370a and 370b are pressed against each other so as to fully wrap around the shoulder portion W2 of the tire W, and are translated about the axis of rotation of the tire. In this embodiment, in order to improve productivity, there are two cutter heads 370a and 37Qb, and the pole screw 342 for moving the cutter heads is the tire tread surface W1.
The two cutter heads 370a and 370b combine the center part of the tire tread surface W1 (trend Wl) with the left and right screws lowered from the center part of the tire tread W1 (tread W1), move reciprocally to both shoulder sides of the tire, and This is to cut and remove spews and cracks on the tread surface W1 (tread Wl).

In the case of snow tire I determination, as shown in FIG.
2 forms an acute block shape, so the detectors 381 previously placed on the canterhead parts 370a and -370b are connected to the canterhead parts 3702 and 370.
It is set to operate at a predetermined turning angle θ3 of b (.

That is, the detector 381 was activated during the operation in which the cutter heads 370a and 370b were pressed against the center of the tire tread surface W1 (tread Wl), moved toward the shoulder portion W2 of the tire, and turned around the shoulder portion W2. At this point, the pressure contact between the cutter heads 370a and 370b is completed. By this operation, spews S and spews on the tire tread surface Wl (tread Wl) can be cut and removed without damaging the block convex portion of the shoulder portion W2.

In the case of determining the snow tire H, as in the case of determining the snow tire I, the shoulder part W2 has an acute angle shape, but the curvature of the shoulder part W2 is different from that of the snow tire. The detector 381 is set when it is desired to classify the data differently from I. With this setting, the canter head section 37
0a and 370b complete the pressure contact of the cutter heads 370a and 370b at a different turning angle from the snow tire I in the operation of turning the shoulder part W2. By this operation, the spew S and firmness of the tire tread surface W1 (red Wl) can be cut and removed without damaging the block convex part of the shoulder part W2.

In the case of determining a square profile tire, as shown in FIG. 25, there are some tires in which the shoulder portion W2 forms an acute angle shape similar to the block design tire, so cutter head portions 370a, ' If 370b is completely turned, part of its shoulder W2 will be damaged.

Therefore, the cutter head parts 370a, 37' are detected by the detector 381 disposed on the cutter head parts 370a, 370b.
By setting the turning angle θ3 of Ob to a predetermined position, the tire tread surface w1 can be adjusted without damaging the shoulder part w2.
(Trend W1) It is possible to cut and remove the spew and firmness in the area.

In practice, this can be done with the same settings as the snow tire (2), and the number of settings for the detector 381 can be saved.

In addition, in the side cutter device 320 that finishes the sidewall portion w3 and shoulder portion W2 of the tire W, first, in the case of a general tire determination, as shown in FIG.
Since the tread surface W1 and the shoulder part W2 of the tire W are arranged in a smooth curve, the shoulder cutter device 330 is moved around the canter head part so that it can sufficiently wrap around the shoulder part W2 of the tire W. 370a and 370b are moved by a predetermined angle θ2 from the center of the rotation axis of the tire toward the outer diameter of the tire while being pressed against each other. At this time, the side cutter device 320 disposed on the bead side is also pressed by the shoulder cutter device 330 at the same time, and the pressure contact is continued until the pressure contact of the shoulder cutter device 330 is completed.

This operation is carried out on both sides of the sidewall part W3 of the tire, and from the sidewall part W3 of the tire to the shoulder part W2.
Perform cutting and removal of spew and paris up to.

In the case of snow tire I determination, as shown in FIG. 25, this type of block design tire has an acute angle formed in the shoulder part W2, so the shoulder cutter device 330 is activated and the knife 378 is If the tire is brought into pressure contact with this portion and turned along the curved surface of the shoulder portion W2, damage will occur to the design portion of the tire.

Therefore, in this case, the shoulder cutter device 33
0, only the side cutter device 320 is operated. The side contour device 320 is pressed near the rim and moves toward the shoulder portion W2.

The end position of the movement of the side cutter device 320 is that the spew detector 271 moves from the outer diameter position of the tire toward the bead side and stops at the position where the spew S is detected.
When the side cutter device 320 reaches that position and the mutual position confirmation detectors 390a and 390b are activated, the pressure contact of the cutters is terminated. This action causes the knife 378
The spew S and paris can be cut and removed without damaging the block convex part of the shoulder part W2.

In the case of snow tire (2), pressure welding is carried out using only the side cutter device 320 as in the case of snow tire I shown in FIG. The end position of the movement of the side cutter device 320 is determined by moving the spew detector 271 to a position preset by the range detector 395, since the spew S is not derived from the shoulder part W2 in the case of this type of tire. Since it is stopped, the side cutter device 320 reaches that position,
When the mutual position confirmation detectors 390a and 390b are activated, the side cutter device 320 ends the pressure contact.

In the case of determining the software profile, the operation is similar to that of determining the snow tire ■.

In the case of a letter tire determination, since a letter tire has a convex part such as a design or letters on the sidewall part W3, if the side cutter device 320 is pressed against that part, damage will be caused. Therefore, the shoulder cutter device 330 and the side cutter device 320 are pressed in the tire outer diameter direction from the bead side without being pressed against the side cutter device 320 on the side where the design, letters, etc. of the sidewall portion W3 are present.

The range in which the side wall portion W3 has designs, letters, etc. is determined to some extent, so when the range is exceeded, the side cutter device 320 is pressed against the shoulder cutter device 3.
30 rotates the shoulder part W2, and the cutter holder 37
The side cutter device 320 is slid to a position where the angle detector 381 attached to one end of the rotation shaft 373 of No. 7 is activated.

In the case of determining letter snow tires ■, letter snow tires ■, letter square profile tires, etc., the operation for letter tire determination is combined with the normal operation of the side cutter device 320 to remove convex designs, letters, etc. Slide the side cutter device 320 on the side where the part is located from the bead side toward the tire outer diameter side without pressing the
When the pressure contact position of T is exceeded, the pressure contact occurs again and the spew detector 2
71 detects the spew S and slides to the stopped position, and the pressure welding ends at that position.

As described above, the tire 8 classified into seven types by the tire type determination device 230 (see FIG. 26) is operated by the crown cutter device 310 and the side cutter device 320 in a predetermined operation according to the determination result. The shoulder cutter device 330 is controlled to appropriately cut and remove the spew S and firmness of the tire W.

Next, the overall operation will be explained.

First, the tire W after molding and vulcanization is transferred to an arbitrary tire supply device 4.
0. The tires are fed one by one to the tire finishing device 10. The supplied tire W is placed on the upper and lower rims 11 of the tire support device 100.
Position it according to the center axis of 0,120.

Then, the positioned tire W is placed on the rim 110.120.
At the same time, it is inflated and rotated.

Next, the positioning roller 222 of the block pattern detector 201 is attached to the air cylinder 22 to the rotating tire W.
Pressure is applied by 6.

The determination result of the block pattern detector 201, that is,
Tire type determiner 40 receives general tires, square profile tires, and block pattern tires.
0. At the same time, the rotating roller 241 of the letter detector 202 is brought into pressure contact with the sidewall portion W3 of the tire W by the air cylinder 248.

The determination result of the letter detector 202, that is, a general classification signal between regular tires and letter tires is transmitted to the tire type determination device 400.

Further, the rotating roller 275 of the tire outer diameter detector 204 is brought into pressure contact with the outer diameter portion of the tire W by operating the air cylinders 264 and 272.

In such a state, the drive motor 22 moves the spew derived position detector 203 that is waiting at a position on the bead side of the tire W.
6 to move toward the tire outer diameter side, and stop for a certain period of time at the position where the tire outer diameter detector 204 is activated.

At this time, if there is abnormal runout in the rotating tire W, the rotating roller 275 of the tire outer diameter detector 204 is pushed back, the signal of the tire outer diameter detector 204 is cut off, and an abnormal tire runout alarm is issued. Occur.

If there is no abnormal runout and the tire W is rotating stably, the air cylinder 270 is operated to press the rotating roller of the spew derived position detector 203 into contact with it.

Subsequently, the drive motor 226 is activated to move the spew derived position detector 203 again toward the bead side of the tire W, and while the spew derived position detector 203 moves, it searches for the derived position of the spew S and detects the spew detector 271. It will stop at the position where it is activated.

When the block pattern detector 201 determines whether the tire is a general tire or a square tire, if the spew detector 271 detects the spew S between the tire outer diameter detector 204 and the range detector's activation. , the tire type determiner 400 determines that this is a general tire.

The tire outer diameter detector 204 mentioned above and the range detector 276
If the spew derived position detector 203 does not detect the spew S until the spew is activated, the tire type determination unit 400 determines that this is a tire with a sphere profile. Furthermore, if the block pattern detector 201 determines that the tire is a block pattern tire, if the spew derived position detector 203 detects the spew S between the tire outer diameter detector 204 and the range detector 276, Then, the tire type determining device 400 determines whether the tire is a snow tire (3).

If the spew derived position detector 203 does not detect the spew S between the time when the tire outer diameter detector 204 and the range detector 276 are activated, the tire type determination device determines that it is a snow tire ■. .

General tires, sphere profile tires,
The classification results of snow tires ■ and snow tires H and the determination results from the letter detector described above are mutually combined by the tire type determiner 400 to classify seven types: general tires, letter tires, snow tires ■, snow tires ■, and letter snow tires. Classified into ■, letter snow tires■, sphere profile tires, and letter sphere profile tires.

The determination result of the tire type determiner 4000 is transmitted to the cutter device controller of the cutter device 300 as shown in FIG.
It is output to the drive section of 0.

As described above, the type of tire W is detected by at least four types of detectors, and depending on the detected type of tire W, the crown cutter device 310, the side cutter device 320... While controlling each of the shoulder cutter devices 330, spews S, paris, etc. derived from the outer circumferential surface of the tire are efficiently cut and finished.

〔Effect of the invention〕

This invention provides a rotatable drive shaft equipped with an inflation mechanism as described above, and a driven shaft that is rotatable and movable up and down and arranged on the axis of this drive shaft, in a machine frame, and the drive shaft A divided rim is provided to fit and hold the tire being conveyed to the shaft end facing the driven shaft, and a block pattern of the tire is detected near the outer peripheral surface of the tire that is fit and held by the rim. block pattern detector;
The block pattern detector includes a letter detector for detecting a letter tire and a spew derived position detector for detecting a spew derived position of the tire, each of which is disposed in a pressure-contactable manner.

A tire type determiner is provided to determine the type of tire based on detection signals output from the letter detector and the spew derived position detector, and an operation is selected and determined based on the tire type signal from the tire type determiner. At the same time, a cutter device is installed to automatically finish spews, paris, etc. that are generated after the tire is vulcanized and molded, and the transported tire is clamped by two rims that rotate and move toward and away from the machine frame. , by inflating the tire, and pressing a block pattern detector, a letter detector, and a spew derived position detector disposed near the outer circumferential surface of the tire with the inflated tire being driven to rotate, each The block pattern of the tire, the letter tire, and the spew derived position of the tire are detected respectively, and the detected values are output to a tire type determination device to determine the tire type, and the tire type is determined from the tire type determination device. Based on the signal, the operation of the cutter device is selected and determined according to the type of tire, and the tire is finished by automatically cutting spews and pars on the outer circumferential surface of the tire that are derived after the tire is vulcanized and molded. Therefore, spews, paris, etc. derived from tires after vulcanization molding are automatically detected, and the detected values are output to a tire type determination device, a cutter device, etc. to efficiently process (finish) a wide variety of tires. There is an effect that can be done.

In addition, when finishing snow tires with sharp ridges on the shoulder part of the tire, or letter tires with high protrusions on the side of the tire, there may be serious damage to the tire surface. It has the effect of being able to obtain a homogeneous finish without causing cutting damage or finishing defects.・

[Brief explanation of the drawing]

Fig. 1 is a front view of a tire finishing device embodying the present invention, Fig. 2 is a side view of Fig. 1 and a block diagram schematically showing each device of the invention, and Fig. 3 is an enlarged view of the tire support device. 4 is a plan view of the positioning means provided on the tire support device, FIG. 5 is an explanatory diagram of the tire fitted to the tire support device during inflation, and FIG. 6 is a diagram showing the types of tires. , a front view of the arrangement of detectors for detecting outer diameter, spew, paris, etc., Fig. 7 is a plan view of Fig. 6, Fig. 8 is an enlarged front view of the block pattern detector, and Fig. 9 shows block pattern detection. Fig. 10 is an enlarged front view of the letter detector, Fig. 11 is a sectional view of the letter detector, Fig. 12 is an explanatory diagram of the control circuit of the letter detector, and Fig. 13 is a tarow cutter. Fig. 14 is an enlarged plan view of the device, and Fig. 15 (a) is an enlarged sectional view of the guide mechanism of the crown cutter device.
, FIG. 15(b) is a plan view and side view of the cutter head on the upper side of the crown cutter device, FIG. 16(a), and FIG.
Figure (b) is a plan view and side view of the cutter head on the lower side of the multi-round cutter device, Figure 17 (a), Figure 17 (b)
, Fig. 17(c) is a plan view, side view, and rear view of the knife attached to the cutter head, Fig. 18 is a plan view showing the installation state of the lower side cutter device and shoulder cutter device, and Fig. Fig. 19 is a sectional view taken along the line XIX-XIX in Fig. 18, Fig. 20 is a side view taken along the line xx-xX in Fig. 18, Fig. 21 is a sectional view of the lower side cutter device, and Fig. 22. (a) and FIG. 22(b) are front and side views of the canter head section on the upper side of the side cutter device or shoulder cutter device, and FIG. 23(a) and FIG. 23(b) are the side cutter device or shoulder cutter device. A front view and a side view of the canter head section on the lower side of the shoulder cutter device, FIG. 24 is an explanatory diagram of the operation of the cutter device in a general tire,
Figure 25 is an explanatory diagram of the operation of the cutter device in block design tires and square profile tires;
FIG. 6 is a block explanatory diagram showing the overall operation. DESCRIPTION OF SYMBOLS 10... Tire finishing device, 11... Machine frame, 100... Tire support device, 110... Upper rim, 120... Lower rim, 130... Drive shaft, 140
... Driven axis, 200 ... Detection device, 201 ... Block pattern detector, 202 ... Letter detector, 2
03... Spew derived position detector, W... Tire. Figure 12 101!1 1111! l ・Figure 22 (a) Figure 22 (b) Figure 23 (b)

Claims (1)

[Claims] 1. A vulcanized and molded tire is fitted onto a split rim provided on a tire support device and inflated, and a tire outer diameter detection means is attached to the tread of the inflated tire. The rotating roller is brought into contact to define the tire outer diameter position, and then the spew derived position detector is moved in the tire radial direction and horizontal direction from the tire bead side position to the tire outer diameter position and stopped, and then Activate the spew derived position detector in a direction perpendicular to the tire radial direction to press the spew detector against the sidewall of the tire, and from this state move the spew detector from the tire's outer diameter position to the bead side. A method for detecting a derived spew position of a tire, characterized in that when the first derived position of a spew is detected, a spew detector is stopped or put on standby, and the detected value is output to a tire type determination device. 2. Inflate the vulcanized tire by fitting it onto a split rim that is rotatable and movable up and down on the machine frame, and determine the position of the spew derived from the vulcanized tire. A spew derived position detecting device for detecting a spew derived position, wherein the spew derived position detecting device is movable along a radial direction of a tire fitted to the split rim on a guide shaft provided on a side of the machine frame. and a rotary roller that presses against the outer diameter of the tire to set the outer diameter position of the tire; and a detector equipped with a detection means for detecting a spew derived from the outer diameter part, and the detector is moved from the outer diameter position of the tire and is activated at a position where the first spew derived position is detected. A tire spew-derived position detection device characterized by having a detection means for stopping or waiting.