JPS618261A - Method and apparatus for finishing tire - Google Patents

Abstract

PURPOSE:To finish various type of tires efficiently through single machine by automatically discriminating the type of tire and controlling the operation of cutter with correspondence to the type of tire. CONSTITUTION:The carried tire W is held to the machine frame 11 by means of rotatable and separatable splitted rims 110, 120 then while rotating the inflated tire, a block pattern detector 201, a letter detector 202 and a spewing position detector 203 are pressure contacted to produce the outputs. The detected levels are provided to a tire type discriminator to decide the type of tire thus to set the operation of cutter 300 with correspondence to the type of tire then automatically remove the spew or burr produced on the outercircumferential face of tire after vulcanization molding of tire thus to finish the tire W.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a tire finishing method and an apparatus thereof, and more specifically, to a method for automatically removing spews, burrs, etc. derived from the outer peripheral surface of a tire after vulcanization molding. The present invention relates to a tire finishing method and apparatus for detecting and automatically cutting and removing tires using a cutter device.

[Prior art]

Conventionally, methods and devices for automatically cutting and removing spills, burrs, etc. derived from the surface of a tire after vulcanization molding are disclosed, for example, in Japanese Patent Publication No. 38-7220 1 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, 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 spills, burrs, etc. derived from the tire surface.

However, the knife of the cutter device as described above 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 ridge design on the tire shoulder or a letter tire with a high convex design on the side of the tire are finished using the same machine, the surface of the tire may be seriously damaged. There were problems such as severe cutting damage and poor finishing.

Therefore, in the case of conventional equipment, it is possible to produce a mixture of general tires and special tires, etc. When producing a wide variety of tires, it is necessary to install multiple finishing machines tailored to the tires. In addition, it is necessary to make set-up adjustments according to the production plan, resulting in extremely low productivity.

[Purpose of the invention]

This invention was devised by paying attention to the conventional problems, and its purpose is to automatically identify various types of tires and to adjust the cutter device according to the M frequency of the tires. To provide a tire finishing method and an apparatus therefor, which can control the operation and efficiently finish a wide variety of tires with one machine.

Another object of the present invention is to fit a tire into a rim divided into two parts, inflate it, and rotate it in this state, thereby making it possible to use various detectors for determining the type of tire at low cost. To provide a tire finishing method and an apparatus thereof, which can be arranged in a contact manner, and can uniformly remove spills and burrs by stabilizing the rotational posture of the tire.

[Structure of the invention]

In order to achieve the above object, the present invention inflates a transported tire by sandwiching the transported tire with two rims that rotate and move toward and away from the machine frame, and then inflates the tire. By press-contacting block pattern detectors, letter detectors, and spew derivation position detectors arranged near the outer peripheral surface of the tire while the tires are being driven in rotation, the block pattern of each tire, the letter tire, and the spew derivation position of the tire can be determined respectively. and output each detected value to a tire type determination device to determine the tire type, and operate the cutter device according to the tire type based on the tire type signal from the tire type determination device. The gist of this technology is to select and determine the tire, automatically cut out spills, burrs, etc. on the outer circumferential surface of the tire that are generated after the tire is vulcanized and molded, and then finish the tire.

In addition, the present invention provides a rotatable drive shaft equipped with an inflation mechanism and a rotatable and movable driven shaft disposed on the axis of the drive shaft in a machine frame, and the drive shaft and the driven shaft are provided in a machine frame. A block pattern for detecting a block pattern of the tire near the outer circumferential surface of the tire that is fitted and held by the rims is provided, respectively, on the shaft end portion facing the rim, which fits and holds the IM-fed tire. A detector, a letter detector for detecting a letter tire, and a spew derivation position detector for detecting a spew derivation position of tie 4 are respectively disposed so as to be able to be pressed together, and the block pattern detector, letter detector, spew A tire type determiner is provided to determine the type of tire based on the detection signal output from the derived position detector, and the operation is selected and determined based on the tire type signal from the tire type determiner. The gist of this invention is to provide a cutter device that automatically finishes off spills, burrs, etc. that are generated after sulfur molding.

[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 +111 side 1-1 of a tire finishing device 10 in which the present invention is actually applied. A tire supply device 40 equipped with a centering device e30 and a centering device e30 is installed.

The machine frame 11 of the tire finishing device 10 includes:
The tire supporting device 100 rotatably fits and inflates the vulcanized and molded tire W conveyed from the feeding device 40, and detects the type, outer diameter, spill, burr, etc. of the tire W. A cutter device 300 that cuts and removes spills, burrs, etc. derived from the side portions and tread portions of the tire W,
Further, the detection device 200 is provided outside the machine frame 11.
A tire type determiner 400 is provided to determine the type of tire W based on a detection signal from the tire W.

As shown in FIGS. 3 and 4, the tire support device 100 is divided into two halves, an upper frame 12 and a lower frame 13 of the machine frame 11. An upper rim 110 in a hollow cylindrical shape and a lower part are separated. A drive shaft 130 and a driven shaft 140 having a rim 120 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 width shaft 135 is provided inside the case 132 so that its upper and lower parts are rotatably supported through bearing members 134a and 134b.

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 via a rotary joint.

Further, the driven shaft 140 supported by the lower frame 13 has a support plate 143 attached to the tip of the rod 142 of the air cylinder 14 attached to the lower frame 13.
A rim holder 145 to which the lower rim 120 is attached via a bearing member 144 is rotatably mounted on the support plate 143.

A guide plate 146 for guiding the lower surface of the tire W is attached to the upper end of the lower rim 120, and a plurality of pole 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 guide rods 149 (three in this embodiment) and a rotation stopper rod 149a are vertically provided, passing through guide holes 148 provided in the guide hole 148. Furthermore, a positioning means 160 for regulating the lower limit of the lower rim 120 is installed on the side of the support plate 143.

(10) The positioning means 160 is composed of an air cylinder 161 and a stopper plate 163 attached to the tip of a rod 162 of the air cylinder 161. When inflating W, the lower rim 120 is restricted from lowering below a certain position, and the interval between the upper and lower rims 110, 120 is set wide.

Next, to explain the operation of the tire support device 100, the vulcanized and molded tire W 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 by book. Then, once the tire W is supplied onto the lower rim 120,
The driven shaft 140 is raised by extending the air cylinder 141, and the lower rim 120 is supported on the support plate 143 via the rim holder 145, and the upper rim 1 is divided into two parts.
10, and the two lower rims 110, 12.
Position the tire W so that it is aligned with the 0 axis center.

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 extended and the guide hole 148 provided in the lower frame 13 is closed by 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 that holds the driven shaft 140 maintains sufficient supporting force against the axial thrust caused by the inflation of the tire W. Because of this, it does not fall rapidly.

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 that was fitted to the upper and lower rims 110 and 120 in the state shown in the figure has been changed 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 Spiyu 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 and 120, at a predetermined rotational speed.

Next, the detection device 200 that detects the type, outer diameter, spill, burr, etc. of the tire W includes a block pattern detector 201 that detects a block pattern of the tire, as shown in FIGS. 6 to 11. It is composed of a letter detector 202 for detecting a letter tire, a spill derived position detector 2.03 for detecting a spill derived position of the tire, and a tire outer diameter detection means 204. The block pattern detection/image output 201 detects the tire WON by detecting the recess P formed in the shoulder part W2 of the tire W.
This is a detector for quickly discriminating types, and its configuration is shown in FIGS. 6 and 8.

It is constructed as shown in FIG. 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 a light beam projector 211 of the recess detector 210 outputs an output. and a detector centering device 220 that centers the recess detector 210 so that the light beam 211a passes through the recess P formed in the shoulder portion W2 of the tire W at a certain position, and the block pattern detector 201 is installed in the vicinity of the tire support device 100 so as to be able to approach and leave and 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, the recess detector 210 uses a narrow-field photoelectric switch, and the light beam 211a output from the light beam projector 211 toward the light receiver 212 detects a part of the shoulder of the tire W. Only when the light passes through the recesses P formed at intervals in W2 and reaches the light receiver 212, the signal is converted into an electric signal and sent to the tire FT type determination 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 counting circuit 231 provided in the tire type determination device 230.

Note that the light beam 211a output from the light beam projector 2]1 may be a normal 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.

As shown in the figure, the light beam projector 211 and the light receiver 212 of the recess detector 210 are attached to the left and right arms 221a and 221b of the body 221, respectively.
They are mounted parallel to the positioning roll 222, that is, so that the light beam 211a output from the light beam projector 211 toward the light receiver 212 is parallel to the tire side surface of the positioning roll 222. 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 roll 22 of the detector setting device 220
2 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 always placed at a constant position on the shoulder part W2 of the tire W. 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 setting device 220 of the block pattern detector 201 was operated (for one day) on the tire W rotatably supported by the tire support device 100, and a pattern formed on the shoulder portion W2 of the tire W was detected. Recess P
is set so that the light beam 211a output from the light beam projector 211 of the recess detector 210 passes through the light beam 211a at a certain position. Then, from this state, the tire support device 100 is operated to rotate the tire W at a predetermined speed, and the four-part detector 210 and the tire type determiner 230 are energized to start their operation. Then, from the light beam emitter 211 of the four-part detector 210 to the light receiver 21
Only when the optical beam 211a output towards the tire W passes through the recess P formed at a distance in the shoulder part W2 of the tire W and reaches the light receiver 212, the optical beam 211a is converted into an electrical signal (pulse). That is, a recess detection signal is output to the tire type determination device 230.

The four-part 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 w3 of the tire W, as shown in FIGS. 6 and 10 to 13.
A rotary roller 241 is supported by a bracket 242 and is rotatably provided at the tip of the example.
42 can move up and down via two guide shafts 244 that slide within a guide housing 243. The guide housing 243 is connected to the letter detector 20.
The main body casing 245 further includes the bracket 2.
42 via a floating connector 246,
Air cylinder 24 for moving drive shaft 247
8 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 is a bellows for dustproofing.

In the present invention, an acceleration sensor 251 is attached to the bracket 242 of the letter detector 202 configured as described above. As the acceleration sensor 25, 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.

Figure 12 shows the acceleration signal A extracted as follows.
FIG. 2 is a block diagram showing an example of a signal processing process for use in an actual tire manufacturing process.

In this embodiment, the acceleration sensor 251 has an amplifier 252.
is connected and amplified by about 10 times, first passed through a low-pass filter 253 to remove the mechanical noise from the acceleration signal A, and then further amplified by about 10 times by an amplifier 254 to correct the signal output attenuated by the filter 253. Amplify. Next, the signal is integrated using an integrator 255 to convert the acceleration signal 'jJA into a velocity signal V.

This speed signal V is input to a comparator 256, and a setting device 2 connected to another input terminal of this comparator 256
57. This comparator 256 functions, for example, to output a signal H when the speed signal V is larger than the reference signal R, and to output a signal 17 when the speed signal V is smaller than the reference signal R.

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 W25
8 may be configured such that, for example, when the H signal is input from the comparator 256, the display is turned on, and when the 17 signal is input, the display is not turned on.

Note that in the letter detector 202, the acceleration signal A
is converted into a speed signal (2) to facilitate comparison with the reference signal R from the setter 257. Of course, it is also possible to select a tire W with a high letter height using only the acceleration signal A. In the case of the above embodiment, the setting device 257
For example, a potentiometer made of a variable resistor can be used, and variations in letter height can be taken into account based on the speed signal output values of various letters whose heights are known and determined experimentally in advance. and the setting device 25
It is sufficient to determine the output level of 7.

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 in accordance with the letter height, and this signal can be used for various types of tire selection.

Further, the letters LT such as design letters and numbers of the tire W are arranged at appropriate sizes and pitches in terms of the design, and are usually about 20 to 30 letters per circumference of the tire surface. Therefore, the rotational speed of the tire W is 4 revolutions per second (
4Hz), the frequency of the acceleration signal generated in the sensor by letters LT is 80 to 120.
It is about Hz.

On the other hand, the tire support device 100 and the letter detector 20
Since the mechanical system of the second class has sufficiently increased strength and rigidity, the frequency of vibration generated in the mechanical system is higher than an octave, so that the noise signal caused by the mechanical system 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 revolution or more of the tire, it is possible to capture the acceleration signal due to the letter LT in a more emphasized manner.

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 in letters such as letters or buzzers.

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

That is, the spew derived position detector 203 and the tire outer diameter detection means 204 are connected to the support plates 26Qa and 2eob.
Each support plate 260a is supported perpendicularly to the machine frame 1 by a nut 261 fixed to its upper surface.
It is slidably fitted into a pole screw 262 disposed parallel to one upper frame 12, 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.
and the support plate 1-2608 are connected via the timing belt 268, and are driven by the rotation of the drive motor 266.
The spew-derived position detector 203 supported by the shaft moves along the pole screw 262 and the guide shaft 262a.

The spill derived position detector 203 supported by the support plate 260a is composed of an air cylinder 270 and a spill detector 271 attached to the tip of a rod 270a of the air cylinder 270. The spill detector 271 is attached to the side wall. A contact type detector (vibration sensor, microswitch, etc.) that is activated by the collision of the Spiyu S derived from part W3 is used, and its specific configuration is described in the 101st! Since it has exactly the same configuration as the letter detector 202 described in FIG. 1 and FIG.

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.
73 and a rotary roller 275 rotatably attached to the tip of the tire W via a bracket 274, and this rotary roller 275 rotates while being rotatably pressed against the surface of the tire W.

A detector 276 that defines the 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. It is installed in the same position. This detector 276 generally covers a portion of the shoulder w2.
It is set at a position 20W to 30 fins 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 tire W spill position N detector 203 and the tire outer diameter detecting 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 drive motor 266 drives 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 moved from the position of the tire bead example and stopped at the outer diameter position of the tire. and,
The air cylinder 270 constituting the spill derived position detector 203 is operated to press the spill detector 2710 roller attached to the tip of the rod 270a. From this state, the air cylinder 264 is operated to move the spill detector 271 to the tire bead side, and the tire W
When the first spew S derived from the outer circumferential surface of
is input. Then, the air cylinder 264 stops, and the movement of the spill derived position detector 203 stops and waits.

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.

And as shown in FIGS. 13 to 25, a crown cutter device 3 finishes the tread 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 crown cuff device 310.
A pair of crown cutter mechanisms 350a and 3 constitute the
50b is the support plate 311a, 311b and the nut 3
12a and 312b so that they can be freely approached and separated.

The crown cutter mechanisms 350a, 350b are comprised of a drive mechanism 360 and canter head sections 370a, 370b, as shown in FIG. 13, and the drive mechanism 360 is connected to the support plate 311a.

Two guide shafts 361a and 36 installed on 311b
1b and an air cylinder 362. 2
The book guide shafts "361a and 361b are connected to the support plate 3
11a, 311b in a slidable manner via a thrust bearing 364, and the tips of the guide shafts 361a, 361b and the air cylinder 3
The cutter head portion 3 is attached to the tip of the rod 365 of 62.
A fixed plate 371 on which 70a 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 at the second position of the fixed plate 37, 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 FIG. 3(e) is attached, and the cutting edge 379 of this knife 378 is formed into a comb-shaped recess so as to guide the spew S, burr, etc. to ensure reliable cutting. , 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 θ (see FIG. 24) at which the tire rotates from the tread 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 the cutter head 3 which finishes the lower surface side.
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
3, one pole screw 322a, 322b and two guide rods 323a are respectively arranged in parallel via a bracket 321.

323b, respectively, so as to be slidable.

Pole screws 322a are arranged above and below.

322b is a sprocket provided at one end of the sprocket 324
a, 324b and a sprocket 326 provided on a drive shaft 326 of a drive motor 325 fixed to the side portion 7L/-m 14 via a chain 327, and when the drive motor 325 is driven, the pole screws 322a, 3
22b are synchronously driven to rotate, and the side cutter devices 320 and shoulder cutter devices 330 on the upper and lower sides of the tire W move synchronously 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 section 329, and the configuration of both is similar to that shown in FIGS. 13 and 15(a), ( b
) to the crown cuff mechanism 350a described in FIGS. 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 for finishing the side wall 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 are the cutter head portions 370a, 370b of the crown cutter device 310, respectively.
0b, a cutter holder 377 holding a knife 378 is rotatably attached, and an angle detector 381 is arranged at one end of a pivot shaft 373 of the cutter holder 377 to detect the pivot angle.

Furthermore, the rotation of the tire W is provided between the fixed plate 371 which slidably holds the side force lid device 320 and the shoulder cutter device 330, and the support plate 260a which slidably holds the spill detector 271. Detectors 390a and 390b (phototubes in this embodiment) are attached to confirm the mutual positions from the center of the shaft toward the outside 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 370a and 370b are connected to the tire tread surface W1 (tread W) using the air cylinder 362 of the drive mechanism 360.
l). Subsequently, the cutter head portion 370a
, 370b and the air cylinder 362 that presses them are supported so as to be able to move in translation with the rotating shaft (drive shaft 130 and driven shaft 140) of the tire W. Therefore, the drive motor 342 rotates the pole screw 342 and the cutter head section 370a
, 370b along the tread curvature of the tire W.

The cutter head portions 370a and 370b include a knife 3.
A cutter holder 377 that holds the cutter holder 377 is rotatably attached, and a detector 381 for detecting the rotation angle θ, (see FIGS. 24 and 25) is arranged at one end of the rotation shaft 373 of the cutter holder 377. The rotation angles of the canter head sections 370a and 370b are specified in advance to the 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 snow tires (2) and (2), which are the block design, 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 W exceeds the angle set for the snow tire ■ 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 370b, and the pole screw 342 for moving the cutter heads has two cutter heads 370a and 370b.
The two cutter heads 370a and 370b combine the center part of the tire tread surface W1 (tread Wl) with the left and right screws lowered from the center part of the tire tread W1 (tread Wl), move reciprocally to both shoulder sides of the tire, and Spills and burrs on the tread surface W1 (tread Wl) are cut and removed.

In the case of snow tire I determination, as shown in FIG.
has an acute block shape, so the detectors 381 disposed on the cutter heads 370a, 370b are set in advance to operate at a predetermined turning angle θ3 of the cutter heads 370a, 370b. put. That is, the cutter heads 370a and 370b are connected to the tire tread surface W1.
(Tread Wl) In the operation of being press-contacted to the center part, moving toward the shoulder part W2 of the tire, and turning around the shoulder part W2, the press-contact of the cutter heads 370a and 370b ends when the detector 381 is activated. do. By this operation, the spouts S and burrs on the tire tread surface W1 (tread Wl) are cut and removed without damaging the block convex portion of the shoulder portion W2.

In the case of snow tire ■, as in the case of 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. Detector 381 is set if you want to classify differently from (2). 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 portion W2. By this operation, the spouts S and burrs on the tire tread surface W1 (trend Wl) can be cut and removed without damaging the block convex portion on the shoulder portion W2.

In the case of determining a square profile tire, as shown in FIG. 25, since some tires have shoulder portions W2 that form an acute angle like block design tires, cutter head portions 370a and 370b are used. If it is completely turned, a part of its shoulder W2 will be damaged.

Therefore, the cutter head parts 370a, 370 are detected by a detector 381 disposed on the cutter head parts 370a, 370b.
By setting the turning angle θ3 of b to a predetermined position,
Tire tread surface Wl without damaging shoulder part W2
(+/Red W1) part can be spun, - and firm parts can be cut and removed.

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 the shoulder portion W2 of the tire W, first, in the case of a general tire determination, as shown in FIG. 24,
Since the tread surface W1 and the shoulder part W2 of the tire W are arranged in a smooth curve, the shoulder cutter device 3
The cutter head 30 is moved by a predetermined angle θ2 from the center of the rotation axis of the tire toward the outer diameter of the tire while pressing the cutter head portions 370a and 370b so as to sufficiently wrap around the shoulder portion W2 of the tire W. At this time, the shoulder cutter device 330 also presses the ID cutter device 320 disposed on the bead side, and the shoulder cutter device W
The pressure contact is continued until the pressure contact at 330 is completed.

Perform this operation on both sides of the sidewall part W3 of the tire, and then
Perform cutting and removal of spills and burrs up to 2.

In the case of snow tire ■, as shown in FIG. 25, this kind of block design tire has an acute angle 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 cutter device 320 is pressed near the rim and moves toward the shoulder portion W2.

The movement end position of the side cutter device 320 is determined by the fact that the spill detector 271 moves from the outer diameter position of the tire toward the bead side and stops at the position where the spill 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 burr can be cut and removed without damaging the block convex part of the shoulder part W2.

In the case of determining the snow tire H, pressure welding is performed only by the side cutter device 320, similarly to the snow tire I shown in FIG. The movement end position of the side cutter device 320 is determined when the spill detector 271 moves to the position preset by the range detector 395, since the spill 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.

Since the range of the design and letters of the side wall part W3 is determined to some extent, the hour number ID cutter device 320 that exceeds that range 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 letter snow tire I2 letter snow tire ■, letter square profile tire, etc., the operation for letter tire judgment is combined with the normal operation of the side cutter device 320 to cut the convex parts such as designs and letters. Slide the side cutter W320 on the side from the bead side toward the outside diameter side of the tire without pressing it, and make the letter L.
When the pressure contact position of T is exceeded, pressure contact occurs again and the spill detector 2
71 detects the spewer 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 spills S and burrs on 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, one tire is supplied to the tire finisher w10. The supplied tire W is placed on the upper and lower rims 110 of the tire support device 100.
．． Position it according to the center axis of 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 judger 4 detects general tires, square profile tight and block pattern tires.
00. At the same time, the rotary roller 241 of the letter detector 202 is moved to the tire W by the air cylinder 248.
is pressed against the side wall portion W3.

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, which is waiting at a position on the bead side of the tire W, to
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 the tire field lightning runout alarm is issued. occurs.

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 spill-derived position detector 203 into contact with it.

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

Further, from the tire outer diameter detector 204 to the range detector 276
If the spill-derived position detector 203 does not detect the spill S until the tire is activated, the tire type determiner 400 determines that it is a tire with a sphere profile.

Further, when the block pattern detector 201 determines that the tire is a block pattern tire, the tire outer diameter detector 20
If the spill derived position detector 203 detects the spill S between 4 and the range detector 276 is activated, the tire type determiner 400 determines that it is a snow tire ■.

If the spill position 1 detection screen 203 does not detect the spill S between the tire outer diameter detector 204 and the range detector 276, the tire type determiner determines whether the snow tire is make a judgment.

General tires, sphere profile tires,
The classification results of snow tires ■ and snow tires ■ 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 400 is transmitted to the cutter device controller of the cutter device 300 as shown in FIG. 29, and an operation signal corresponding to the tire type is transmitted to each cutter device 30.
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, spills S, burrs, 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 derivation position detector for detecting a spew derivation position of the tire, each of which is disposed so as to be able to be pressed together.

A tire type determiner is provided to determine the type of tire based on the detection signal 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 off the spills and burrs 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 spill-derived position detector disposed near the outer peripheral surface of the tire while the inflated tire is being driven to rotate. , detect the block pattern, letter tire, and spew derived position of each tire, respectively, output the detected values to a tire type determination device to determine the tire type, and detect the tire type determination device. Based on the tire type 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 off spills, burrs, etc. on the outer circumferential surface of the tire that are derived after the tire is vulcanized and molded. As a result, various types of tires can be automatically identified and the operation of the cutter device can be controlled according to the type of tire, allowing a single machine to efficiently cut many types of tires. There is an effect that can be done.

In addition, by fitting the tie 4 to the rim divided into two parts and rotating the tire in this state, various types of detectors for determining the type of tire can be arranged in an inexpensive contact type. This also has the effect of stabilizing the rotating position of the tie 4 and allowing uniform spewing and deburring.

[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 is a schematic configuration diagram showing each device of the invention, and Fig. 3 is an enlarged vertical sectional view of the tire support device. , FIG. 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. Figure 7 is a plan view of Figure 6, Figure 8 is an enlarged front view of the block pattern detector, Figure 9 is an enlarged front view of the block pattern detector. An explanatory diagram of the control circuit, 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 the crown cutter device. FIG. 14 is an enlarged sectional view of the guide mechanism of the crown cutter device, FIG.
Figure 5(b) is a plan view and side view of the cutter head on the upper side of the crown cutter device, Figures 16(a) and 16(b).
) are a plan view and a side view of the canter head section on the lower side of the crown cutter device, FIG. 17(a), FIG. 17(b),
Fig. 7(c) is a plan view, side view, and rear view of the knife attached to the canter head, Fig. 18 is a plan view showing how the lower side cutter device and shoulder cutter device are installed, and Fig. 19 is a sectional view taken along line XIX-XIX in FIG. 18, FIG. 20 is a side view taken along line XX-XX in FIG. 18, FIG. 21 is a sectional view of the lower side cutter device, and FIG. ), FIG. 22(b) is a front view and side view of the cutter head part on the second part side of the side cutter device or shoulder force ivy device, FIG. 23(a), FIG. 23(b)
) is a front view and a side view of the cutter head section on the lower side of the side cutter device or shoulder cutter device, No. 24
The figure is an explanatory diagram of the operation of the cutter device for general tires.
FIG. 5 is an explanatory diagram of the operation of the cutter device in block design tires and square profile tires, and FIG. 26 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... Spiyu derived position detector, W... Tire.

Claims (1)

[Scope of Claims] 1. After the transported tire is sandwiched between two rims that rotate and move toward and away from the machine frame, the tire is inflated, and the inflated tire is driven to rotate. By press-contacting block pattern detectors, letter detectors, and spew derived position detectors arranged near the outer circumferential surface of the tire in the state where the tires are pressed, the block pattern of each tire, the letter tire, and the spew derived position of the tire are detected respectively. , outputting each detected value to a tire type determining device to determine the tire type, and selecting an operation of the cutter device according to the tire type based on the tire type signal from the tire type determining device. A tire finishing method characterized in that the tire is finished by automatically cutting off spews, burrs, etc. on the outer peripheral surface of the tire, which are determined at the same time as the tire is vulcanized and molded. 2. A rotatable drive shaft equipped with an inflation mechanism and a rotatable and movable driven shaft disposed on the axis of the drive shaft are provided in the machine frame, and the drive shaft and the driven shaft face each other. a block pattern detector for detecting a block pattern of the tire near the outer circumferential surface of the tire fitted and held on the rim; A letter detector for detecting a letter tire and a spew derived position detector for detecting a spew derived position of the tire are respectively disposed so as to be able to be pressed together, and outputs from the block pattern detector, letter detector, and spew derived position detector are provided. A tire type determination device is provided to determine the type of tire based on the detection signal from the tire type determination device, and an operation is selected and determined based on the tire type signal from the tire type determination device. A tire finishing device characterized by being equipped with a cutter device that automatically finishes off burrs, etc.