JPH01164607A - Tire repairing device - Google Patents

Abstract

PURPOSE:To fully automatize a tire in its repair by inspecting a flaw in the tire and, in accordance with this inspection result, respectively controlling a supporting means of the tire and two or more work means of the tire such as a skiving means, cement applying means and a rubber injecting means. CONSTITUTION:A tire supporting means B holds a buff-finished tire A from the inside, setting a rotary angle. While an inspecting vision device C measures a position and size of a flaw generated in a surface of the tire A, further calculating hole filling volume. On the other hand, a skiving means D skives the flaw to be cleaned, further a cement applying means E applies cement to a skiving part, while a rubber injecting means F injects hole filling rubber into a cement applied part. A control means G controls the tire supporting means B to be rotated being based on an output signal of the inspecting vision device C, while opposing each work means D-F respectively facing to the repair part of the tire A.

Description

DETAILED DESCRIPTION OF THE INVENTION LLL stands and cube unit 1 relates to a device that automatically repairs cracks formed on the tire surface.

iJ'LI To repair scratches formed on the tire surface, the outer surface of the tire is buffed, the uneven parts are skived and cleaned, cement is applied, and the holes are filled with hole-filling rubber material.

When actually carrying out this process, in the past, the tie V that had been buffed in the previous process was obtained and immediately transported to the location, the transported tire was set in a skive device, and the repaired area was visually sorted and inspected by the worker. Then, use a hand grinder to cut and skive the parts that require repair.

After the skiving process is completed, the tire is removed from the skiving device, transported to a cleaning position, and fed into the vJ cleaning equipment to clean the skived area.

After cleaning, cement is applied by an automatic cementing device, and the tires are transported by trolley to a hole-filling workshop, where a worker operates a rubber-filling tool to fill the repaired holes.

Next, the filled-in area is leveled and the work is completed.

° And.

As described above, in the past, each process required manual labor, making it difficult to maintain stable quality, and it was not sanitary to work in an environment that was prone to noise and dust.

Furthermore, having to transport tires between each process required a lot of labor, lowered production efficiency, and required more work space.

Preface: The present invention has been made in view of the above points, and it automates each process and movement of tire repair, thereby stabilizing quality, reducing labor, and reducing installation space, as well as being favorable from a sanitary perspective. The point is to provide repair equipment.

The configuration of the present invention will be explained based on FIG.

A is a buffed tire.

B is a tire support means that can hold the buffed tire A from the inside and set the rotation angle.

C is an inspection vision device that measures the position and size of a flaw on the tire surface, stores the measured value, and calculates the hole filling volume.

D is a skiving means that opposes the scratches on the tire A and skives the scratches as well as cleaning them.

E is a cement application means that faces the skived part of the tire A and applies cement to the same part.

F is a rubber injection means for injecting hole-filling rubber into the skived portion of the tire A, which is opposite to the portion coated with Cement 1.

G is a control means, which controls the rotation of the tire support means B and the skive means based on the 1!3 positions stored in the inspection vision device C.

The movement of the cement application means E and the rubber injection means F is controlled, and each skive means and cement application means E are controlled.

The rubber injection means F is made to face the repaired parts of the tire one after another.

Tire 8 is mounted on tire support means B, the position and size of the scratches on the surface of tire A are measured, and the values are input into inspection vision device C so that they can be stored in inspection vision device v1C from now on. Under the control of the control means G based on the position of the scratch, the skiving means is first opposed to the uneven part of the tire A for skiving and cleaning, and then the cement application means E is opposed to the skived part. Cement is applied, and then the rubber injection means F faces the cement application area and can inject hole-filling rubber.

Vision device C for mounting tire A on tire support means B and measuring and inspecting the uneven portion of tire A at an initial stage
All input and other inspections can be done automatically, except by manual input, which ensures stable quality and reduces labor, as well as eliminating the need for manual labor during skiving, cement application, and rubber injection. The work can be kept to a minimum and it can be made sanitary.

An embodiment of the present invention illustrated in FIGS. 2 to 10 will be described below.

FIG. 2 is a top view of the tire repair device 1 of this embodiment,
FIG. 3 is a front view of the Q.

A tire support device 3 is disposed on the right side and vertically supports the tire 2, and a wheel portion 4 supports the tire 2 from the inside.

The wheel part 4 is rotatable by a rotary drive part 5, holds the tire 2, and can freely set the rotation angle.

Further, the tire support device 3 can support the tire 2 and inject air into the work inside the tire 2.

What is supported by the tire support device 3 and arranged on the right side of the tire 2 is a measurement device 7 that measures the position of scratches on the tread surface of the tire 2, and is part of a detection vision device 6 (not shown). .

Operate the measuring device 7 to monitor the scratches on the tire 2,
Determine the location, size, and depth of the wound on the torso side.

The location of the scratch is determined by the rotation angle θ from the reference point and the displacement X in the direction of the rotation axis.
It is determined by measuring the

Information on these flaws is numbered at each opening, and is input to the detection vision device 6 and registered.

At this time, the skive m and the filling rubber injection 1 are calculated based on the size and depth of the scratch and recorded at the same time.

Thereafter, the rotary drive OJ unit 5 is driven based on the position information (rotation angle θ) of the flaw recorded in the detection vision device 6, and the tire 2 can be rotated by an appropriate angle.

On the other hand, various machine tools are arranged on the left side of the tire support device 3.

Let us now assume that the direction of the rotational axis of the tire 2 is the X axis, and the horizontal direction perpendicular to X@ is the Y axis.

Two rails 1 are oriented in the X-axis direction on the top surface of the support base 10.
1 is laid, and a base 13 is provided on the rail 11 via a sliding receiving member 12 so as to be slidable in the X-axis direction.

A threaded rod 14 is rotatably supported in parallel in the center of the two rails 11, and its rear end is connected to a drive shaft of a servo motor 15.

Since the threaded rod 14 is threaded through a protrusion provided on the lower surface of the base 13, the threaded rod 14 is rotated by the drive of the servo motor 15, and the rotation of the screw stud 14 is caused by the protrusion provided on the lower surface of the base 13. The base 13 can be slid back and forth through it.

A rail 16 is laid on the base 13, oriented in the Y-axis direction perpendicular to the It is supported by people who can learn freely.

A threaded rod 19 is rotatably installed on the base 13 parallel to the rail 16, and its left end is connected to the drive shaft of a servo motor 20 fixed to the base 13 at a j1.

The threaded rod 19 penetrates and screws into a protrusion provided on the lower surface of the sliding base plate 18. Therefore, the threaded rod 19 is rotated by the drive of the V-bo motor 20, and the rotation of the threaded rod 19 is caused by the protrusion provided on the lower surface of the sliding base plate 18. The sliding substrate 18 can be slid in the Y-axis direction through the section.

Various machine tools are mounted on the sliding board 18, and in order from the front to the back in the X-axis direction are a skive processing device 30, a cement coating device 40, and so on. A rubber injection device 50 and the like are arranged in parallel.

First, the skive processing device e30 has a rotary base 33 that is rotatable at an angle of approximately 45 degrees on an arm 32 that protrudes to the right from the right side of a gear box 31 that is erected on a sliding base plate 18.
is provided.

The rotary base 33 is tapered, and motor drive shafts 34 are provided on the tapered surface at equal intervals so as to protrude outward from four locations. At the tip of each motor drive shaft 34, a different type of grindstone 35 (30φ roughness) is provided. Whetstone, 30φ finishing whetstone.

A 15φ rough whetstone and a 15φ finishing whetstone are fitted.

The rough whetstone is a special carbide end mill that rotates in the forward direction, and the finishing whetstone is a special whetstone that rotates in the reverse direction.

An air hose 36 extends from the rotary base 33 toward the tip of each grindstone 35, and air can be blown out from the tip.

Although not shown, there are four motor drive shafts with a 34° grinding wheel 3.
5. Each set of air hoses 36 can be covered with a cover except for the tips.

A motor 37 is fixed to the left side of the gear box 31, and its drive shaft is inserted into the gear box 31, and the rotating base 33 can be rotated by the meshing of the gears in the gear box 31. By controlling the drive of the wheel 37, one of the four types of grindstones 35 can be selected and set in a horizontal position facing the tire 2.

Therefore, with a predetermined grindstone 35 corresponding to the size of the scratch set in a horizontal position, the tire 2 supported by the tire support device 3 is rotated by a predetermined angle θ, and the base 13 is fixed by the drive of the servo motor 15. By sliding the grindstone 35 in the X-axis direction, the predetermined grindstone 35 can be opposed to the mountain portion of the tire tread surface of the tire 2.

Next, as shown in FIG. 4, while rotating the grindstone 35, the sliding board 18 is slid to the right on the Y axis by the drive of the servo motor 20, the grindstone 35 approaches the peak and cuts the peak. Skive processing.

The amount of skive is determined by the depth of the scratch, and the displacement in the Y-axis direction is controlled to process the material with an appropriate amount of skive.

In this skiving process, the material is first roughened with a rough whetstone and then finished with a finishing whetstone.

In addition, the frontage of the vacuum 38 for growth is directed to the lower position of the horizontally located whetstone 35 used for skiving processing, and the rubber scraps scraped by the whetstone 35 are cleaned by the air blown out from the air hose 36. Suction is performed using the vacuum 38 for removal and formation.

Blowout of air and suction by the growth vacuum 38 are performed continuously during skiving processing, and are stopped after some time after the processing is completed.

Therefore, the skived uneven portion is cleaned by air blowing, and the scraped rubber debris is sucked up by the cleaning vacuum 38 within the cover, so that rubber debris is not scattered around.

When one uneven part is skived and cleaned in this way, the rotation of the tire 2 and the base 1
3 in the X-axis direction, the selected predetermined grindstone 35 is placed to face the next offset portion to skive and clean the offset portion.

Next, the cement-containing device 40 provided adjacent to the skive processing device 30 will be explained based on FIG. 5.

An automatic coating machine gun 41 is fixed on the sliding substrate 18 next to the skive processing device 30 and oriented in the Y-axis direction.
Cement 43 is injected from a nozzle 42 at the tip.

A cover 44 is provided around the nozzle 42 to prevent it from scattering around.

An air supply hose 45 is connected to the rear end of the automatic coating machine gun 41, and air is supplied to the nozzle 4 via a throttle valve 46.
2, and a cement injection port is provided between them.

A pipe 48 extending from a tank 41 storing cement 43 is connected to the cement injection port.

Therefore, by opening the throttle valve 46, air flows through the gun, and cement can be sucked through the cement injection port and injected through the nozzle 42.

Note that the gun 41 for the automatic coating machine is equipped with a throttle valve 49 to enable adjustment of the spray (2).

When operating the cement applicator 40, the tire 2 is rotated by a predetermined angle θ and the base 13 is moved by a predetermined amount X in the Place the cement so that it faces the repaired area, that is, the area that has already been skived and cleaned. Let me do it.

A sensor that detects vibrations is installed near the nozzle, so that when a blockage occurs, it can be detected as a change in vibration.

The repaired area coated with cement is dried by blowing only air for a predetermined period of time.

Next, the rubber injection device 5 adjacent to the cement application device 40 is
0 will be explained based on FIGS. 6 to 8.

The sliding board 18 has a rectangular notch 18a on the back side of the cement application device 40, and the sliding board 18 has a rectangular notch 18a on the back side of the cement application device 40. A pivot shaft 52 is rotatably oriented in the X-axis direction by a bearing 51 fixed on the III substrate 18.
is supported, and a disk 53, which is held vertically with its center fixed to the same pivot 52 in front of the bearing 51, slides at its lower end! It has a shape that fits into the notch 18a of the IJ board 18.

A pivot 52 that protrudes rearward from the bearing 51 is connected to the gearbox 5.
4, and is connected to the drive shaft of a motor 55 mounted on the rear end of the sliding board 18 in the same gearbox 54 so that drive can be transmitted.

Therefore, the disc 53 is rotated by the drive of the motor 55.

On the front side of the disk 53 is a rubber injection device 50, as shown in FIG. A cutter 65 and a flat groove device 70 are arranged at predetermined positions.

The rubber injection device 50 heats raw rubber 56 with a heater, kneads it with a screw 57, and injects it into the repair area through a nozzle 58, and the spout of the nozzle 58 faces in the centrifugal direction of the disk 53.

The raw rubber 56 is supplied to a supply section 60 through a feed pipe 59, and heated by a heater provided in the supply section 60.

The rear end of the supply section 60 is provided with a motor 61 for driving the screw 57 and has an air supply section 62 .

Alongside the rubber injection device 50, a cutter 65 is installed on the disk 5.
It is fixed on the front of 3.

The cutter 65 has a drive shaft 66a of a motor 66 protruding parallel to the nozzle 58 of the rubber injection device 50, and a blade 67 having a substantially disk shape and a partially bulged portion at its tip is fitted in the center thereof. It is worn.

A cutting edge 67a is formed on one side of the bulging portion of this blade 67, and when the blade 67 rotates, this cutting edge 67a passes near the spout of the nozzle 58 (see Fig. 8). .

Therefore, as shown in FIG. 7, the blade 67 is driven by the motor 66 so that the raw rubber 5G poured out toward the tire repair location is connected between the spout of the nozzle 58 and the repair location. It can be rotated and cut with its cutting edge 67a.

Note that hot air is sent to the cutting section by a ceramic heater to facilitate cutting.

Further, the cutting edge 67a is designed to be cleaned by a provided brush 68.

A smoothing device 70 is arranged on the front surface of the disc 53 at a position rotated approximately 90 degrees from the rubber injection device 50 and cutter 65.

Two rocking plates 72 are pivotally supported in the front and rear on a pivot shaft 71 protruding from the front surface of the disk 53, and a leveling roller 73 is rotatably pivotally attached to the tip of the rocking plate 72.

One of the rocking plates 12 is aligned with the pivoted base end.
An extension part 72a extends on the opposite side of the rough 3, and a cylinder 74 is fixed to the tip of the extension part 72a and the disc 53.
The distal end of the cylinder rod 74a is rotatably engaged with the distal end of the cylinder rod 74a.

Therefore, when the cylinder door 4a is moved in and out by driving the cylinder 74, the swing plate 72 swings around the pivot shaft 71 together with the leveling roller 73.

As described above, the rubber injection device 50. cutter 65. Since the smoothing device 10 is fixed to the disc 53, by rotating the disc 53 by driving the motor 55, the rubber injection device 50 can be opposed to the tire 2, or the smoothing device 70 can be opposed to the tire 2. Figures 6 to 8 show disk 5.
3 is rotated to set the rubber injection device 50 in a position where its rubber injection direction is horizontal, and the base 13 is moved in the X@ force direction to face the repair location of the tire 2.

FIG. 7 shows a state where the sliding substrate 18 is appropriately moved in the Y-axis direction and rubber is injected into the repaired area where cement was applied and dried in the previous process, and at this time, the amount of raw rubber 56 injected is The size of the scratch is determined in advance by the detection vision device 6.
The skive 6 is determined based on the depth, and the appropriate amount is injected.

And the raw rubber 56 connected to the nozzle 58
The blade 67 of the cutter 65 cuts the disk (see FIG. 8), and then the motor 55 drives the disc 53 clockwise about 90 degrees.
When rotated once, the smoothing device 70 faces the part of the tire 2 filled with raw rubber, as shown in FIG.

Therefore, when the leveling roller 573 swings up and down by the drive of the cylinder 74, the leveling roller 73 rotates and presses the surface of the buried raw rubber 56, reciprocates, and can smooth the surface.

The break-in work is completed by one to three reciprocating movements.

The apparatuses and their functions in each process have been described above, but these are comprehensively controlled by a computer to proceed with the work, and humans check the repair status at any time during the process.

The overall work procedure is illustrated in Figure 10 below.
Explanation based on yardage.

First, the tire 2 is mounted on the wheel portion 4 of the tire support device 3 (step (2)), the workpiece inside the tire 2 is injected (step (2)), and work preparations are completed.

Then, when a push button switch (not shown) is pressed, the tire is moved to the measuring device 7 of the detection vision device 6 (step 2), and the necessity of repair 10 is visually determined (step 2).

If the need for repair is recognized, the measurement device 7 is operated to determine the location of the scratch (rotation angle θ, displacement x in xq* direction), size,
The depth is measured and sequentially inputted and registered in the detection vision device 6 together with the flaw number (step 2).

At this time, the detection vision device 6 determines the size of the grindstone to be used based on the input information, and makes allowances for the skive cap and hole-filling rubber injection port in advance.

Next, when a push button switch (not shown) is pressed, the tire 2 is rotated by a predetermined angle θ based on the scratch position information, the base 13 is moved in the X-axis direction by a predetermined displacement X, and positioning is performed. When the rough whetstone 35, which has already been determined based on the size of the scratch, is set on the stomach in a horizontal position, the whetstone 35 faces the mountain part and skive processing begins (step 2).

That is, air is blown out from the air hose 36 simultaneously with the rotation of the grindstone 35, and when the sliding substrate 18 moves in the Y-axis direction, the grindstone 35 roughly cuts the crest to form a tapered hole.

The amount of movement of the grindstone 35 is determined in accordance with the skive suspension calculated in advance.

Next, the grindstone 35 is moved backward once and switched to the finishing grindstone 35, and then the same grindstone 35 is rotated and moved forward again to finish the surface of the hole smoothly.

During this time, air is blown out from the air hose 36, and the scraped rubber debris is removed and cleaned at the same time, and the rubber debris is sucked up by the growth vacuum 38.

When such skive processing and cleaning of the peaks are carried out while positioning all the peaks of the tire 2, the quality of the processing is then visually inspected (step ①).

Areas with poor processing conditions are processed again.

If all the peaks are well machined, the base 13 will be
The cement application device 40 is moved in the axial direction so as to face the tire 2, and each repair point on the tire 2 is positioned, and cement is sequentially applied and dried using the cement application amount 40 (step (2)).

Next, the base 13 is moved in the X-axis direction and the rubber injection amount is 5.
0 faces the tire 2, and after sequentially positioning the repaired parts to which cement has been applied, the holes are filled with raw rubber by the rubber injection device 50 and cut by the cutter 65 (step 2).

Then, the disc 53 is rotated 90 degrees, the smoothing device 70 faces the tire 2, and the filled repair areas are successively positioned and smoothed by the leveling roller 73 (step [
KK]).

When the above-mentioned processing is completed, a visual inspection is performed (step ■), and defective areas are processed again.

When all repair points have been repaired satisfactorily, a pushbutton switch (not shown) is pressed to move each device to its original home position (step @), and the tire 2 is removed from the wheel portion 4 ( Step @), complete the repair.

As mentioned above, the work name is only involved in the initial stages of mounting the tire, measuring and inputting scratches, and inspecting during processing; the rest of the time, repairs are automatically performed in each process with the push of a button. This greatly reduces labor, allows one person to handle multiple devices, and ensures more stable quality.

Also, during skiving processing, the rubber debris that has been cleaned and scraped off inside the cover is sucked up, so it will not be scattered around, and when applying cement, it will be covered by the cover and the cement will not be scattered around, but there will still be fine particles. Leakage, resulting in pond dust and noise.

However, since the above-mentioned workers do not directly perform the processing work, the work in dust can be kept to a minimum, which is preferable from a sanitary standpoint.

Furthermore, since the processing equipment for each process is concentrated in one place, the number of transportation steps can be reduced and work efficiency can be increased.

Furthermore, the installation space is small.

In addition, in the work procedure of this example, when dealing with multiple scratches, skive processing is first performed on all scratches, and then the process is moved to cement application. After completing one process for all scratches, the next process is started. Moving on: However, it is also possible to use a work procedure in which all repair processes are performed on each individual scratch, such as performing each process on one scratch and then performing each process on other scratches.

According to the present invention, each process and movement of tire repair is automated, so labor can be significantly reduced and quality can be stabilized.

Furthermore, since the worker is not directly involved in the processing work, it is preferable from a sanitary standpoint.

Furthermore, the installation space can also be reduced.

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is an overall top view of a repair device according to an embodiment of the present invention, Fig. 3 is a front view thereof, and Fig. 4 is a front view of a skive processing device. Fig. 5 is a front view of the cement applicator, Fig. 6 is a top view of the main parts of the repair device showing the moving state, Fig. 7 is a front view of the rubber injection device, cutter and smoothing device during rubber injection, and Fig. 8 is a front view of the cement application device. FIG. 9 is a front view of the rubber injection device, cutter and smoothing device during smoothing processing, and FIG. 10 is a flowchart showing the working procedure in this embodiment. A... Tire, B... Tire support means, C...
Inspection vision device, D... Skive means, E...
Cement application means, F... Rubber injection means, G... Control means, 1... Tire repair device, 2... Tire, 3
...Tire support device, 4...Wheel part, 5...
Rotary drive vJ section, 6... Vision device for detection, 7...
81 measuring device, 10... support stand, 11... rail, 1
2...Sliding receiving member, 13...Base, 14...Threaded rod, 15...Servo motor, 16...Rail, 17
... Sliding receiving member, 18... Sliding board, 19... Threaded rod, 20... Servo motor, 30... Skive processing device, 31... Gear box, 32... Arm Part, 33... Rotating base, 34... Motor drive shaft, 35... Grindstone, 36... Air hose,
37... Motor, 38... Vacuum for growth, 40... Cement applicator, 41... Gun for automatic applicator, 42... Nozzle, 43... Cement, 44...
... Cover, 45 ... Air supply hose, 46 ... Throttle valve, 47 ... Tank, 48 ... Pipe, 4
9... Throttle valve, 50... Rubber injection device, 51...
Bearing, 52... Pivot, 53... Disc, 54... Gear box, 55... Motor, 56... Raw rubber, 5
7... Screw, 58... Nozzle, 59... Feeding pipe, 60... Supply section, 61... Motor, 62...
- Air supply unit, 65...Cutter, 66...Motor, 66a...Drive shaft, 67...Blade, 67a...Blade tip, 68...Brush, 70...Flat WI device, 71・
... Pivot, 12... Rocking plate, 72a... Extension part, 7
3... Leveling roller, 74... Cylinder, 74a.
...Cylinder rod.

Claims (1)

[Claims] A tire support means that can hold a buffed tire from the inside and set the rotation angle, an inspection vision device that measures the position and size of a scratch on the tire surface, stores the value, and calculates the filling volume, a skiving means that faces the skived portion of the tire and performs cleaning as well as skives the same scratched portion; a cement application means that faces the skived portion of the tire and applies cement to the same portion; a rubber injection means for injecting hole-filling rubber into the same part opposite to the part where the hole has been removed; and a rotation control of the tire support means based on the position of the scratch stored in the inspection vision device, the skive means, the cement application means, and the rubber. 1. A tire repair device comprising: control means for controlling the movement of the injection means and causing each of the skiving means, cement application means, and rubber injection means to sequentially face the repaired portion of the tire.