JPS59209904A - Automatic tire valve inserter for tubeless tire - Google Patents

Abstract

PURPOSE:To make highly reliable operation attainable, by making a tire valve insertable into a valve hole of a wheel without any damage to a tire valve cap, while installing a check device at each work whereby transferring to th next manufacturing process as checking for whether or not the preoperation is proper. CONSTITUTION:Taking in a wheel 24 through a conveyor 3, when the wheel 24 is stopped at the specified position by a stopper, a cylinder 37 is extended in motion, and an engaging part 36 enters a hub hole of a wheel disc whereby the wheel 24 is lifted up to a position where it hits the disc 45. Next, with operation of a motor 50, the wheel 24 is rotated via the disc 45. At this time, with each operation of a valve hole detection switch 53 to be used for selection according to wheel size and a valve hole stop position check switch, the wheel 24 is stopped at the specified rotative position. Then, a valve press-in device 98 is set in motion so that a tire valve is inset in a valve hole of the wheel 24 via a rod 101.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic tire valve insertion device for tubeless tires that automatically and reliably performs a series of operations from wheel size detection to tire pulp insertion.

Traditionally, this type of work has been done manually using tools such as tire pulp levers, but this requires a large number of man-hours and requires a large amount of labor when inserting the tire pulp.
Productivity was low, and since the operation of the tire pulp lever required skill, the pulp cap was often damaged by inexperienced workers. On the other hand, as a mechanized version of this type of work, an automatic tire pulp insertion device has been proposed in the past, which inserts tire pulp into a pulp hole in one go, and then grasps the pulp stem and pulls it in further. However, when gripping the pulp stem, the insertion state of the tire valve is unstable, so the pulp cap is easily damaged, and the temporary insertion and subsequent drawing processes are separated, which reduces the number of parts in the device. There were drawbacks such as an increase in the number of In addition, recently, after detecting all the valve holes of the wheel and positioning them at the predetermined positions,
An automatic insertion device that inserts tire valves has been proposed, but with this conventional device, each work process proceeds without confirming the validity of the previous work, making it difficult to ensure the quality and reliability of the work. There is a risk of confusion in the next process,
The present invention as an automatic machine eliminates the drawbacks of the conventional device, and allows the tire pulp cap to be inserted into the pulp hole of the wheel without damaging it. It also provides a confirmation means for each operation to check whether the previous operation was successful or not. By checking the next process before moving to the next process, it prevents confusion in the next process and ensures high reliability as an automatic machine. It also allows for quick handling of wheels of different sizes, making it possible to use a wide range of machines. An object of the present invention is to provide an automatic tire valve insertion device for tubeless tires that can be used in a variety of ways.

To avoid this, the automatic tire valve insertion device for tubeless tires of the present invention includes a pulp hole detection switch that detects the valve hole when the wheel is rotating, stops the wheel drive source, and brakes and rotates the wheel to a fixed position. A valve hole stop position confirmation switch that detects the pulp hole position when rotation is stopped and whether or not the tire valve is press-fitted in the pulp hole, and press-fits the bushing rod when the valve hole stops at the fixed position, and a valve hole stop position confirmation switch that detects the wheel size when the wheel rotates. A wheel size detection switch that detects and switches to the switch corresponding to the wheel size, and also makes it possible to adjust the horizontal movement stroke of the bushing rod via a spacer removal/removal cylinder; The tire pulp receiver is positioned in the transfer area.The tire pulp receiver is connected to a transfer device, which detects the presence or absence of a tire valve handed over to the bush rod. The invention is characterized by comprising a valve press-fitting device for press-fitting a handed tire valve into a valve hole of a wheel, and a movable body provided with a valve locking hole for accommodating the tire valve that is still in an inverted position, and the valve locking device. a pulp supply detection switch that detects whether or not a tire valve is accommodated in the stop hole; a fluid pressure cylinder that extends in conjunction with the switch and is capable of locking the tire valve accommodated in the valve lock hole; The tire pulp receiver is equipped with a drive device that reverses the movable body after the tire pulp is locked and positions the opening side of the valve locking hole downward. a dash rod that engages the tire valve and holds the tire valve;
It is characterized by having a pulp press-in device equipped with a fluid pressure cylinder that moves the bushing rod horizontally and vertically, and a spacer attachment/detachment cylinder that attaches and detaches the spacer in conjunction with a wheel size detection switch and adjusts the movement stroke of the bushing rod.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.
In the figures to FIG. 8, 1, 1, 2°2.2 are a lower horizontal frame and a lower horizontal frame fixed on the floor surface 3, and these frames have a plurality of front vertical frames 4°4.4. and rear vertical frames 5, 5, 5'' are established, and upper horizontal frames 6, 6' and upper horizontal frames 7° 7.7 are fixed to their upper ends, and front and rear vertical frames that face Frame 4
．． 4. Intermediate horizontal frame 8° 8.8g between 4, 5, 5, 5"
are fixedly installed, and a pair of support frames 9, 9 are fixedly installed facing each other in the longitudinally intermediate portions of these intermediate horizontal frames 8.8', 8'. 10 and 10' are front vertical frames 4'.

A side frame 12.4 is a reinforcing frame fixed between the rear vertical frames 5' and 5'', and guides 11 and 11' are fixed at the intermediate portions of the reinforcing frames 10 and 10' in the longitudinal direction. 1
2 are provided facing each other, and this side frame 12°12
A belt conveyor is provided between .

Belt conveyor 13c, side frame 12, 12'
Boo IJ rotatably supported at both ends of ]=1,
1/! ', rollers 15, 15 rotatably supported between these pulleys 14, 14, and these pulleys 14,
, 1.4 and the rollers 15, 15 are constituted by a pair of belts 16.16. 17.18F
The rollers 19 are rotatably supported at both ends of the i-belt conveyor in the conveyance direction, and are projecting pieces that project approximately horizontally from the front ends of the front vertical frames 4, 4, and are approximately the same as the rollers 17. These overhanging pieces 19 and rollers]8 are arranged at a high position.
At the outside position, there is an incoming conveyor and an outgoing conveyor 2.
Pulleys 22 and 23 are rotatably supported, allowing the wheel 2A to enter and exit the belt conveyor 13. If not, the wheel unloading confirmation switch is disposed at the starting end of the unloading conveyor 21 and is composed of, for example, a phototube and a light receiving element n, detects the wheel prisoner being unloaded to the unloading conveyor 2j, and transmits the signal to the stocker. It is sent to the drive unit. The stopper king is, for example, disposed so as to be removable at the terminal end of the carry-in conveyor, and is normally located above the carry-in conveyor to prevent wheels from being carried into the belt conveyor 13. The wheel 24f is moved to move away from the carry-in conveyor 20 and carried to the belt conveyor.

Reference numeral 29 denotes a motor installed below the belt conveyor 13, which is linked to, for example, a cyclo reducer, and a belt 31 is wound between the drive pulley 3Q and the pulley 14 to drive the belt conveyor. At the same time, a tension roller 32 is attached to those belts 16°31.
, 33 are pressed against each other so that the tension of each belt can be adjusted. Reference numeral 34 denotes a stopper that is retractably provided on the conveying surface of the belt conveyor, and is connected to the pneumatic cylinder piston rond, and is normally located below the conveying surface of the belt conveyor 13 to enable the conveyance of the wheels. , is actuated by the switch failure detection signal to protrude above the conveyance surface and prevent the wheel from being conveyed. In this case, the stopper 34 maintains its protruding state for a certain period of time, and then, for example, when the wheel blade comes into contact with a wheel drive boob, which will be described later, the stopper 34 moves back and returns to the bottom of the conveying surface. It is a retaining part that can protrude a certain height above the conveyor surface of the conveyor 13, and its shape is that of the wheel disc)S
It has a conical shape that can be inserted into a knob hole (not shown), and the conical surface engages with the knob hole to enable the wheel U to move up and down. Therefore, the conical surface of the engaging portion 36 whose diameter increases in the vertical direction can support wheel paths having various diameters, while the stopping position of the knob hole of the wheel path is fixed to the retaining portion 36.
Even if the wheel is slightly eccentric from the axis of the wheel, it can be tolerated, and in other words, it is possible to carry in wheel paths of various sizes. This engaging portion 36 is linked to the piston rod of the pneumatic cylinder 37 and is movable up and down, and the tip is normally positioned below the conveying surface of the belt conveyor 13 to enable conveyance through the wheel path. Then, when the wheel cylinder carried onto the heald conveyor 13 comes into contact with the stopper 34 and the pneumatic cylinder 37 is extended, it moves upward and maintains its highest position for a certain period of time, causing the wheel cylinder valve to close. The tire valve 39 is press-fitted into the hole, and when this is confirmed, it is configured to move downward. 40 is a guide rod that moves up and down in the direction of extension of the pneumatic cylinder 37;
It operates integrally with the engaging portion 36 to stabilize its operation.

This is a drum-shaped wheel drive pulley rotatably supported above the belt conveyor trench.
A grooved pulley 43 with a grooved pulley 43 wrapped around the circumferential surface of the pulley 43
A drum 44 with one end fixed to the inner peripheral surface of the drum 1
A friction disk 4 made of, for example, sheet-like rubber is mounted inside the flange portion 44 a located at the lower end of the friction disk 4 .
5, and a pulley support 47 in the form of a 7-lung flange, which circumscribes the lower end surfaces of these grooved pulleys 43 and the outer peripheral surface of the drum 44 via a sliding bearing 46. Of these, the pulley support 47 is supported by a plurality of connecting rods 49 fixed vertically downward via support frames 48, 48 installed between the upper horizontal frames 7', 7''.

A motor is installed obliquely above the wheel drive pulley 41, and is connected to, for example, a cyclo reducer, and a grooved pulley 51 and a brake device 52 are installed at the bottom of a downwardly facing drive shaft. Among these, grooved pulley 5
The belts 42 and 42 described above are wound around the circumferential surface of the motor 1, so that the torque of the motor can be transmitted to the grooved pulley 43 and the drum 44.

In the OFF state, the wheel 24 is moved upward together with the engagement portion 36 to block the transmission of motor torque to the grooved pulley 51, and the friction disk 45 is moved upwardly.
When it comes into contact with the clutch mechanism and timer are turned on,
The torque of the motor 50 is transmitted to the grooved pulley 51 and then to the other grooved pulley 43 to rotate the pulley 43. When the position of the valve hole 38 of the wheel runner, which rotates in synchronization with the friction desk 45, is detected by the valve hole detection switch described later within the time set on the timer, the clutch mechanism is turned off.
At the same time, the brake mechanism tilts down and the grooved pulley 5
1 and 43, and brakes the rotation of these pulleys 51 and 43.
The brake mechanism is set to turn off approximately when the vehicle stops. On the other hand, if the position of the pulp hole in the wheel row is not detected by the pulp hole detection switch within the time set by the timer, the clutch mechanism is turned off and the rotation of the wheel drive pulley 41 is stopped. I'm trying to stop it.

Then, when the position of the pulp hole in the wheel row that has stopped after braking rotation is confirmed by the pulp hole stop position confirmation switch (described later), a signal is sent to the bushing rod actuating section (described later), and - the tire pulp is removed by the bushing rod. The insertion operation is started, and if it cannot be confirmed by the switch, it is set to be in the NG state.

That is, the valve hole stop position confirmation switch is connected to the phototube M and the light-receiving element disposed above and below the wheel drive pulley 41, and the optical axis of the detection light emitted from the phototube is aligned with the pulley 41. When the pulp hole passes through the intersecting position, the detection light transmitted through the pulp hole is detected by the light receiving element 55, and the signal is transmitted to the brake. device 52
I'm trying to send it to. Then, in response to this signal, the brake device 52 turns off the clutch mechanism, turns on the brake mechanism to brake the rotation of the wheel drive pulley 41, and then turns off the brake mechanism.

In this case, the valve hole detection switch seconds is set to a certain detection time in conjunction with the timer. If it cannot be detected, an NG signal is sent to the brake device 52 to stop the operation of the device 52.

Therefore, when inserting a tire valve using a bushing rod, it is possible to remove in advance the wheel 24 that may be an obstacle when inserting a tire valve, such as a defective pulp hole in the wheel U, a poor position of the hole, or a clogged hole. This means that this can be avoided.

On the other hand, the pulp hole stop position confirmation switch palm consists of a phototube and a light receiving element installed, for example, at the upper and lower positions of the wheel drive pulley 41 in the same way as the pulp hole detection switch open. When the wheel row comes into contact with the friction disk 45, detection light is emitted. In this case, the second detection position of the switch is on a concentric circle with the second detection position of the valve hole detection switch, and the wheel whose rotation has been stopped at the detection position of the valve hole detection switch is being braked due to inertia. It is set in accordance with the most accurate rotational displacement that can be reached by rotating. Therefore, most of the pulp holes 38 are located near the detection position of the valve hole stop position confirmation switch 56 when the wheel drive pulley 41 stops rotating. When the pulp hole of the wheel 24 is positioned at the detection position, the detection light passes through the pulp hole and reaches the light receiving element, and the signal is sent to one pivoting part of the bushing rod to encourage upward movement of the bushing rod. ing. On the other hand, if the position of the nokurupu hole 38 does not reach or passes the detection position of the switch 56, the switch is in an unconfirmed state and becomes an NG state. In this case, for example, if the NG signal is sent to the brake device 52 to restart the device 52 and the stop position of the knob hole 38 is configured to be correctable, the stop position of the brake hole 38 can be corrected. In addition, after confirming the stop position of the pulp hole 38, the pulp hole stop position confirmation switch gate
It is configured such that it is possible to confirm whether or not the tire valve 39 is inserted into the tire valve 8. That is, the switch is configured to emit detection light from the phototube even after confirming the stop position of the knob hole, and when the bushing rod retreats from the wheel and descends to the lowest position after the tire knob is press-fitted, the detection light is emitted by the light receiving element. By detecting the presence or absence of light reception, it is possible to confirm whether the tire valve is press-fitted. For example, when the light receiving element does not receive the detection light, the detection light is blocked by the tire valve 391C, and after confirming that the tire valve 39 is inserted into the valve hole, the signal is sent to the actuating part of the pneumatic cylinder 37. When the light receiving element receives the detection light,
It is confirmed that the tire valve arm is not inserted into the pulp hole 38, and the result is NG. Therefore, if an alarm circuit, for example, is connected to the switch (2), the state will be known by the activation of the alarm.

A. The fireflies are a valve hole detection switch and a valve hole stop position confirmation switch provided to correspond to the slightly smaller diameter wheel U, and these are configured substantially the same as each switch 53■ described above, and the corresponding switch , is installed at a position approximately in the radial direction of the baby. In the tire pulp receiver described later, the tire valve receiver installed directly below the transfer device is a transfer confirmation switch, which is composed of, for example, a phototube 60 and a light receiving element 61 arranged parallel to the conveyance path of the belt conveyor 13. As will be described later, the optical axis 62 of the detection light is located at the tip of the bushing rod waiting to receive the tire valve 39 from the passing device, that is, at the position of the tire pulp holder. The tire valve 39 receiver detects the presence or absence of passing depending on whether or not the detection light is received by the light receiving element 61.

In this case, since this detection position is the original position before adjustment of the bushing rod that responds to the wheel size, detection can be performed at a fixed position regardless of the wheel size or tire valve size, and the configuration of the switch mechanism is simple. has been made into When the light-receiving element 61 does not receive the detection light, that is, when the tire pulp is passed to the bushing rod, the signal is sent to the actuating section of the bushing rod, and the signal is sent to the bushing rod operating section to enable the bushing rod to operate. , when the light receiving element 61 receives the detection light, that is, when the tire valve head is not passed to the bushing rod, N
It becomes a G state and prevents the bushing rod from operating.

A wheel size detection switch is provided between the wheels 410 and 410, and is composed of, for example, a phototube 64 and a light receiving element 65. The wheel size is determined qualitatively based on whether the detection light is received by the light receiving element 65 at that time.

Therefore, if the optical axis of the detection light is set at a position corresponding to the standard wheel size, when the detection light is interrupted, it will be detected that the wheel is the same diameter as the standard wheel, and the detection light will be When it passes through, it can be detected that the wheel in question has a smaller diameter than the reference wheel. When the wheel size is detected in this way, the valve hole detection switch 53°V and the valve hole stop position confirmation switch are set corresponding to the wheel size. In the case of the embodiment, a switch 56 detects the valve hole for a large diameter wheel, and a switch 56 checks the valve hole stop position.For a small diameter wheel, a switch 56 detects the valve hole. The switch crab performs this, and the switch Kaoru checks the pulp hole stop position. On the other hand, when the wheel size detection switch 63 detects the wheel size, it sends a signal to a spacer removal/removal cylinder (not shown) to automatically adjust the movement stroke of the bushing rod according to the wheel size. For example, if the wheel size is large, a spacer is attached to the guide described below that can indirectly control the horizontal movement stroke of the bushing rod, and the transfer stroke is regulated; , the spacer is removed from the guide, making it possible to extend the transfer stroke of the bushing rod.

The gloss is a tension roller placed between the grooved boos IJ 4.3 and 51, which allows the tension of the belt 42 to be adjusted, and 67 is a hopper for storing tire pulp fireflies.
installed diagonally above the wheel drive pulley 41;
Reference numeral 8 denotes a letter heart feeder installed adjacent to the hopper 67, which feeds tire valves 39 of a constant i from the hopper 67, and arranges them in the same direction, with the valve caps facing forward in the case of the embodiment. They are configured to be arranged and fed into a chute 69. The chute 69 opens an opening at the upper end to the parts feeder 68, is inclined downward from the opening position, is bent vertically downward from the end of the inclination, and has an opening at the lower end to the tire pulp receiver and transfer device 70. It is placed directly above the camera.

Reference numeral 71 denotes a stopper provided on the slope of the chute 69, which normally prevents the tire valves supplied into the chute 69 from falling, and the tire valve receiver is linked to the operation of a switch described later that detects the return position of the transfer device 70. Then, the tire valve conveyance path is opened, and - tire valves 39 can be supplied to the tire pulp transfer device 70.

As shown in FIGS. 4 to 6, the tire valve transfer device 70 has a bent columnar movable body 7 formed in an abbreviated shape.
2, in which a pulp locking hole 73 is formed,
The opening of the locking hole 73 has a tapered surface 73 whose diameter expands upward.
The valve body 740 is formed in a tapered surface 73a to accommodate a tapered surface 74a of the valve body 740.

Reference numeral 75 denotes an insertion hole formed on the side end surface of the movable body 72, which communicates with the valve locking hole 73, and below the insertion hole 75, which communicates with the pulp locking hole 73 and opens on both side end surfaces. A detection hole 76 is formed, and a valve supply detection switch 77 is disposed on the axis of this detection hole 76.

The valve supply detection switch 77 is composed of, for example, a phototube 78 installed on one side of the axis of the detection hole 76 and a light receiving element 79 installed at the opposite position. After returning, the presence or absence of the tire valve 39 being supplied into the valve locking hole 73 is detected. That is, when the light receiving element 79 does not receive the detection light, the tire pulp is not supplied into the valve locking hole 73. 1 and sends the signal to the operating part of the pneumatic cylinder, which is a fluid pressure cylinder (described later).On the other hand, when the light receiving element 79 receives the detection light, it means that the tire valve line is not being supplied. is detected to form an NG state.

Reference numeral 80 denotes an adjustment hole formed at the lower end of the movable body 72, the upper part of which communicates with the pulp locking hole 73, and a threaded part 81 formed at the lower end, into which the adjustment screw 82 can be screwed. This adjustment screw 82 is used to accommodate tire pulp elbows of different sizes corresponding to the wheel sizes at predetermined positions.

Reference numeral 83 denotes an L-shaped support fitting with one end fixed to the upper end of the movable body 72, and an L-shaped fitting 84 and a mounting plate 85 at the other end.
is fixedly installed, and via these L-shaped fittings 8 and mounting plate 85,
The aforementioned pneumatic cylinder 86 is mounted horizontally.

A locking rod 89 is fixed to the tip of the piston rod 87 of the pneumatic cylinder 86 via a fixing fitting 88, and the locking rod 89 is moved in and out of the insertion hole 75 by the expansion and contraction of the pneumatic cylinder 86, thereby closing the valve. The circumferential surface of the valve stem 90 of the tire valve 39 housed in the locking hole 73 is made removable.

That is, the locking rod 89 is connected to the valve supply detection switch U.
Due to the expansion operation of the pneumatic cylinder 86 in conjunction with the operation of the tire valve 39, it protrudes into the insertion hole 75 of the movable body 72 and
While the movable body 72 is inverted, its locking hole 73 is locked.
When the reed switch (path shown) attached to the vertical operating pneumatic cylinder (described later) detects the highest position of the bushing rod moving upward toward I am trying to release the line engagement. Note that for tire valves 39 of different sizes, the desired purpose can be achieved by operating the adjustment screw 82 to adjust the valve stem 90 position to the same height as the pulp locking hole 73. Become.

Reference numeral 91 denotes a switch attached to the mounting plate 85, which is constituted by, for example, a proximity switch.A detection plate 92 with one end fixed to the fixing metal fitting 88 is disposed in front of the detection surface of the switch 91. The tire pulp receiver is moved by the rotary actuator 93 as a drive device of the transfer device W.
I am trying to turn on the operation. That is, the Lochly actuator 93 is installed at the same height as the tire valve transfer device W, and the tire valve receiver fixes the bent portion 72 a of the transfer device 70 to the shaft end of the drive shaft 94 . is rotatably supported. By the extension of the pneumatic cylinder 86, the locking rod 89 is displaced to a certain extent so as to be able to engage with the valve stem 90 of the tire valve 39, and the detection plate 92 moves simultaneously to detect the switch 91. When moving away from the surface by a certain distance, the rotary actuator 93 is turned ON in conjunction with the operation of the switch 91, and the tire valve holder moves the transfer device 70 to the fourth position around the drive shaft 94.
It is designed to rotate counterclockwise in the diagram. On the other hand, two limit switches (not shown) are provided below the rotary actuator 93 to detect the rotation angle of the drive shaft 94, and one of the switches detects a predetermined reversal angle of the drive shaft 94. The forward rotation operation of the rotary actuator 93 is stopped, and the other switch detects the return angle of the drive shaft to its original position, releases the closing operation of the stopper 71, and transfers the tire pulp to the neat 69. We are able to supply it. Note that the rotary actuator 93 has a bushing rod that is a tire pulp receiver and a transfer device W.
From there, the tire valve is passed to the receiver and lowered to the lowest position (2
When a reed switch attached to the cylinder detects the displacement of the vertically operating pneumatic cylinder at that time, the cylinder is driven in the reverse direction to return to its original position. Reference numerals 95 and 96 are stones and bolts placed above and below the partition plate 97.
The tire valve holder is a valve press-fitting device installed at a lower position of the transfer device 970, and it moves toward and away from the belt conveyor 13. A horizontally actuated pneumatic cylinder 99, which is a hydraulic cylinder capable of recoil, a wheel drive pulley 4], and a tire pulp receiver are connected to a horizontally actuated pneumatic cylinder 99, which is a hydraulic cylinder capable of moving up and down at a constant angle of inclination toward the cutting direction of the transfer device. pressure cylinder 1
00, and a bushing rod 10 that can move horizontally and vertically under the control of the operation of both pneumatic cylinders 99 and 100.
Of these, the horizontally operated pneumatic cylinder 99 operates vertically when the bushing rod 101 is transferred from the tire valve transfer device W to the tire valve transfer device W and lowered to its original position. The piston rod 102 of the pneumatic cylinder 100 is extended in conjunction with a reed switch (not shown) that is activated by detecting the displacement of the piston rod 102, and the piston rod 103 is projected in the direction of movement of the belt conveyor, and this state is maintained for a certain period of time. Then, when the Frisch rod 101 presses into the valve hole of the tire valve 39 and descends to the lowest position, the reed switch that detects the displacement of the piston rod 102 of the vertically operating pneumatic cylinder 100 is activated. The piston rod 103 is retracted from the direction of belt conveyor movement, allowing it to return to its original position.

The vertically operating pneumatic cylinder 100 moves its piston rod 103 when the horizontally operating pneumatic cylinder 99 returns to its original position.
The bushing rod 101, which is attached to the tip of the piston rod 102 via the connecting plate 104, moves simultaneously with the bushing rod 101, which is attached to the tip of the piston rod 102 via the connecting plate 104, and is reversed above the bushing rod 101. The piston rod 102 is raised toward the movable body 72 on standby.
At the time of maximum extension, the reed switch attached to the pneumatic cylinder 100 is operated to stop the extension operation, and at this time, the tire valve 39 is passed from the movable body 72 to the tip of the bushing rod 101. . and,
After the piston rod 102 has expanded to its maximum extent, it starts to contract in conjunction with the operation of the reed switch and returns to its original position.

Thereafter, the pneumatic cylinder 100 maintains the contracted state, while the horizontally operated pneumatic cylinder 99 is operated to extend while simultaneously moving the pneumatic cylinder 100 by the reed switch that detects its return state, and in its maximum extended state. Waiting for signals from pulp hole stop position confirmation switches 56 and 58,
The vertically operating pneumatic cylinder 100 is extended by signals from the switches 56 and 58, and the bushing rod 101 holding a tire valve firefly at its tip is raised toward the pulp hole of each wheel. Then, at the time of maximum extension, the tire valve firefly is press-fitted into the pulp hole of the wheel U via the bush rod 101, and at this time, the reed switch that detects the displacement of the piston rod 102 is activated, stopping the extension operation and replacing it with the tire valve firefly. When the reduction operation is started and the bushing rod 101 is lowered and the piston rod 102 reaches a certain reduction displacement, the -de switch detects the reduction operation, the reduction operation of the pneumatic cylinder 100 is stopped, and the signal at that time is transmitted to the horizontal operation pneumatic pressure. It is sent to the cylinder 99 to enable return to the original position. Note that these reed switches are attached to the outer periphery of the pneumatic cylinders 99, 100, and are operated by detecting the displacement of the piston reciprocating within the cylinder.

The bush rod 101 is a long rod, and its base is fixed to the connecting plate 104 to enable it to operate integrally with the upper and lower operating pneumatic cylinders 100. As shown in the figure, it is composed of three stages of cylindrical rods, among which the pushing part 101a is the longest rod with the largest diameter, and an abutment part 101b is provided at its tip via a step part, An engaging portion 101c with the smallest diameter is disposed at this tip via a stepped portion, and the tip of this engaging portion 101c is formed into a pointed shape. When the tire pulp 39 is transferred, the pushing part 101a is located apart from the tire pulp 39, and the abutting part 101b is located apart from the tire pulp 39, as shown by the imaginary line in FIG. 39 into the recessed hole 107,
A small hole 10B in which the engaging portion 101C communicates with the recessed hole 107
At the same time, when the tire pulp 39 is press-fitted, the bushing rod 10
1 is transmitted to the tire pulp 39, the tire pulp 39 is pushed into the pulp hole, and at the same time, one end of the tire pulp 39 that is extended and displaced outward of the pulp hole 38, that is, the 7 rung portion 106 is pushed. The bushing rod 101 is brought into contact with the stepped end portion of the portion 101a to suppress the pushing displacement of the bushing rod 101, thereby preventing excessive press-fitting of the tire valve firefly and damage caused thereby. Reference numeral 105 denotes a rod-shaped guide arranged in the direction of expansion and contraction of the piston rod 103 of the horizontally operated pneumatic cylinder.
A connecting rod (not shown) connecting the connecting plate 104 and the vertically operating pneumatic cylinder 100 is slidably mounted to support the vertically operating pneumatic cylinder 100 and the connecting plate 104, and to stabilize the horizontal movement thereof. Although not shown, the above-mentioned spacer attachment/detachment cylinder is provided at the shaft end of the guide 105, and in conjunction with the operation of the wheel size detection switch, a plate-shaped cylinder attached to the tip of the piston rod is provided. A spacer is moved in and out of the circumferential surface of the guide 105, and the horizontal movement stroke of the vertically operating pneumatic cylinder 100 and the connecting plate 104, in other words, the bushing rod 101, can be adjusted by the thickness of the spacer. In addition, W and W2 are a wheel U with a large diameter and a wheel U with a slightly smaller diameter.

In the automatic tire valve insertion device configured in this way, during operation, the belt conveyor consists of four motors, one pulley (9), and one pulley (9).
4.14' rotates via the belts 31 and 16, and the loading/unloading conveyor 21 also rotates to keep the wheel row in a state where it can be transported onto the belt conveyor. A part of the stopper protrudes from the terminal end to lock the wheel row conveyed by the conveyor and prevent the wheel row from being carried into the belt conveyor 13. The pneumatic cylinder 35 is still inside the belt conveyor 13.
is extended and a part of the stopper protrudes above the conveyance surface of the belt conveyor 13 to lock the wheel row, while the pneumatic cylinder 37 is contracted and the retaining part 36 is moved onto the conveyor surface of the belt conveyor 13. It is located below the transport surface and opens the transport path for the wheel row.

In such a state, for example, when a part of the stopper retreats from the conveyance surface of the input conveyor, opens its 'fG path, and feeds one wheel row onto the belt conveyor 13, the wheels U move onto the belt conveyor. 13 and transported to the second
It moves to the right in the figure and comes into contact with the stopper 34 protruding above the conveyance surface, and stops its movement. Stopper 34
When the wheel train stops receiving the wheel row, the signal is sent to the operating part of the pneumatic cylinder 37, and this pneumatic cylinder 37 is operated to extend and engage the engaging part 3 (5 is the wheel disc) provided at the tip of the piston rod. The retaining portion 36 is formed into a conical shape, so it fits tightly into the knob hole and lifts the wheel row while centering it. While promoting stability, even if the stopping position of the wheel row is slightly eccentric from the axis of the retaining part 36, this can be tolerated. When the pneumatic cylinder 37 is further extended and the wheel comes into contact with the lower end surface of the friction disk 45 as shown by the imaginary line in FIG. is stopped, and this state is maintained by the pneumatic cylinder 37.

When the wheel U comes into contact with the 7-reaction disk 45,
The clutch mechanism and timer of the brake device 52 are turned on,
The torque of the motor 50 is transmitted from the brake device 52 to the other grooved pulley 43 via the grooved pulley 51 and the belt 42, and the drum 44 fixed to the pulley 43 rotates, causing the wheel 24 to move around the friction disk 45. Also, as the wheel rows come into contact with each other, valve hole detection switches 53, 57, valve hole stop position confirmation switches 56, 51? One of the switches corresponding to the wheel size becomes operable. That is, as the wheel row rotates, the wheel size detection switch 63 starts detection, and the detection light emitted from the phototube 64 is transmitted to the light receiving element 6.
If light is received by 5, it is detected that the wheel is, for example, a small-diameter wheel W. If light is not received, it is detected that it is a large-diameter wheel. Switch class, infant straddle 58
.

That is, when looking into the valve press-fitting device at this time, the bushing rod 101 passes the tire valve from the tire pulp transfer device 4 and descends to the original position, and at this time, the tire valve receiver is transferred by the transfer confirmation switch 59. tire pulp 39
When the presence or absence of the piston rod is confirmed, and the signal is sent to the spacer removal/removal cylinder, the cylinder expands and contracts to move the spacer fixed to the piston rod into and out of the shaft end of the guide 105, thereby removing the spacer plate. Thick bush rod 10
Adjust the horizontal working stroke of 1.

For example, in the case of a large-diameter wheel set, a spacer is installed to shorten the stroke of the bushing rod 101, and in the case of a slightly smaller-diameter wheel W2, the spacer is removed.
The bushing rod 101 is extended in the aforementioned stroke. The bushing rod 101 then moves horizontally, stops on the axis of the valve hole 38 of the wheel U, and waits for a signal from the pulp hole stop position confirmation switch 56 and the shaker 58.

Therefore, for example, when the diameter of each wheel is large, the wheel size detection switch 63 switches to the valve hole detection switch 53 and the valve hole stop position confirmation switch 56, and these perform the desired detection operation. Among these, the valve hole detection switch culprit is the photocell 5, as shown in Figure 1.
The optical axis of the detection light emitted from the wheel 24 intersects the orbital trajectory of the bulb hole of each wheel, and while the wheel 24 is rotating, the detection light passes through the bulb hole 38, and the light receiving element group When the light is received, the signal is sent to the brake device 52 and the clutch mechanism is turned OFF, while the brake device is turned OFF.
N, the transmission of torque to the groove pulleys 51.degree. 43 is cut off, and these pulleys 51.degree. 43 and the drum 44 are rotated under braking. On the other hand, if the valve hole detection switch 53 does not detect the valve hole 38 during the fixed detection time set in the timer, in this example, while the wheel drive pulley 41 makes two rotations, a timeout occurs and the NG state occurs. prevent the operation of Therefore, situations that may pose an obstacle when inserting the tire pulp 39, such as defects in the valve hole 38, incorrect valve hole position, or clogging of the valve hole due to foreign matter, can be eliminated in advance, thereby preventing confusion in the next process. Valve worker accidents can be prevented.

In addition, the wheel 24 under braking rotation stops rotating due to attenuation of the amount of inertia, but when the wheel 24 stops rotating, the valve hole 38
When the position of the valve hole stop position confirmation switch second detection position shown in Fig. 3 is reached, the detection light passes through the pulp holes and is sensed by the light receiving element, and the signal is sent to the upper and lower operating pneumatic pressure of the valve press-fitting device. Q is sent to the cylinder 100. Therefore, the vertically operating pneumatic cylinder 100 is operated to move the bushing rod 101 upward along the axis of the valve hole 38 of the wheel U, as shown by the imaginary line in FIG. Insert the tire pulp wire from the valve cap side into the valve hole 38 of the wheel cap. The tire pulp wire inserted into the bushing hole prevents the upward displacement of the bushing rod 101 from reaching the abutment part 101.
The tip step part of b is received at the bottom of the recessed hole 10γ and further enters between the valve holes, at which time mainly the tapered surface 74a of the valve body 74 is handled by the valve hole 38 and extends in the axial direction. Then, the flange portion 106 is displaced outward in the same direction, and the end surface of the flange portion 106 is aligned with the bushing rod 101.
It comes into contact with the tip step part of the pushing part 101a. Since the bushing rod 101 is prevented from entering into the tire valve 39, it is possible to avoid the situation in which the tire valve 39 is damaged due to excessive entry of the bushing rod 01.

In this way, when press-fitting the tire knob 39, hold the rear end of the tire valve 3 with the bushing 101, open the valve cap side, and insert the tire knob into the knob hole 38.
Since it is inserted inside, the club cap is less likely to be damaged, and since the bushing rod 101 does not come into contact with the circumferential surface of the wheel 24 at all, there is no possibility that the wheel circumferential surface will rub against the bushing rod 101 and be damaged. 〃stomach. In addition, if the stop position of the wheel-like valve hole 38 is not in the fixed position when the rotation of the wheel drive pulley ±1 is stopped, the NG state will occur, but in this case, the brake device 52 and the switch 2 seconds are set to operate again. Then, ノ(shibu hole 3
It is desirable that the stop position of No. 8 is corrected.

On the other hand, when the highest position of the bushing rod 101 is detected by the reed switch attached to the vertically operating pneumatic cylinder 100, the pneumatic cylinder 100 starts to extend and descend, and its tip is inserted into the tire valve 39. Pull it out from the valve hole and descend along the axis of the valve hole until it reaches its lowest position. Then, during the time when the tire valve 39 reaches the lowest position after press-fitting, in the embodiment, coincident with the time when the bushing rod 101 reaches the lowest position, the valve hole stop position confirmation switch 56 starts detection again and the valve hole stops. Check whether the tire pulp is press-fitted. That is, during the press-fitting operation of the tire pulp wire, the wheel drive pulley stops rotating and maintains the same position relative to the wheel as at the time of detection, so the optical axis of the detection light from the phototube bowl is aligned with the pulp hole path. When the light-receiving element 55 does not receive the detected light, it detects the press-fitting of the tire valve and sends the signal to the pneumatic cylinder 37 to urge the wheel to be taken out, while receiving the detected light. Time is tire valve 3
It is detected that 9 is not press-fitted, resulting in an NG state.

Therefore, it is possible to remove the wheels U in which the tire valves have not been inserted in advance, thereby avoiding confusion in the next process.

Then, the pneumatic cylinder 37 is operated to contract in response to the signal from the pulp hole stop position confirmation switch I, and the wheel body with the tire valve line attached thereto descends while being supported by the engaging portion 36, and the belt conveyor]3 accommodated above. The pneumatic cylinder 37 is further compressed to move the engaging portion below the conveying surface of the belt conveyor 1'3, making it possible to carry out each wheel separately. The stopper 34 is actuated when the wheel comes into contact with the seventh traction disk 45, and has already been retracted below the conveying surface of the belt conveyor. Therefore, the wheel casting is conveyed to the belt conveyor ] 3 and sent to the carrying-out conveyor 2. When the wheel casting passes the empty detection position of the wheel carrying-out confirmation switch during conveyance by the conveyor 2, carrying-out of the wheel casting is confirmed, and the wheel casting is carried out. A signal is sent to the pneumatic cylinder 35 and the actuating part of the stopper,
The stopper 34 protrudes above the conveying surface of the belt conveyor, and the stopper evacuates from the input conveyor and feeds the wheel onto the belt conveyor.

Note that when the bush rod 101 reaches the lowest position of the axial line between the pulp holes as described above, this state is detected by the reed switch attached to the vertically operating pneumatic cylinder 100, and the signal is transmitted to the horizontally operating pneumatic cylinder. 99, the pneumatic cylinder 99 is compressed, and the bushing rod 10''1 returns to its original position. After the bushing rod 101 returns to its original position, the tire valve holder starts passing the tire valve to the passing device 70, but the tire valve holder starts passing the tire valve 39 to the passing device 70. During this time, the tire valve 39 is connected to the bushing rod 101 in a transfer operation, and these operations are completed when the bushing rod 101 returns to its original position.

That is, in the case of the tire pulp transfer device type, when the tire valve 39 has been supplied to the bushing rod 101 for each preceding wheel, the movable body 72 is placed in an inverted state as shown by the imaginary line in FIG. It's dark. After that, the bushing rod 101 which received the tire valve firefly is lowered to the starting position 2, and this state is detected by the reed switch attached to the vertical operating pneumatic cylinder 100, and the signal is sent to the rotary actuator. 93, and the actuator 93 is driven in the reverse direction, the drive shaft shaft rotates clockwise in the figure, and the movable body 72 returns to its original state. On this occasion,
A limit switch (not shown) detects a certain displacement accompanying the return rotation of the drive shaft 94, sends the signal to the stopper 71, temporarily releases the closing mechanism of the stopper 71, and causes the stopper 71 to be moored in the chute 69. A portion of the tire pulp 39 that has been stored is discharged into a chute 69. The tire pulp 39 released in this way falls freely along the conveyance path of the chute 69, and when received from the lower end opening into the valve locking hole 73 of the movable body 72, the photoelectric tube 78 The detection light emitted to the detection hole 76 of the movable body 72 through the tire valve is blocked by the tire valve, and the valve supply detection switch is activated.

The signal is sent to the pneumatic cylinder 86.

Therefore, the pneumatic cylinder 86 is extended and the locking rod 89 connected to the piston rod 87 enters the insertion hole 75 of the movable body 72, and the tip of the locking rod 89 is connected to the tire valve! and locks all the tire valves, while the extension of the pneumatic cylinder 86 displaces the detection plate 92 fixed to the fixture 88 in the same direction as the locking rod 89. , as a result of retreating from the detection surface of the switch 91, a certain displacement is detected and the switch 91 operates,
The signal is sent to the rotary actuator 93. This signal causes the rotary actuator 93 to rotate forward, the drive shaft 94 to rotate counterclockwise in FIG. 4, the movable body 72 to reverse, and when the drive shaft 94 rotates by a certain angle, the limit switch is This is detected and operated, and the drive of the rotary actuator 93 is stopped. The movable body 72 then comes into contact with the stopper % and stops rotating.
The bushing rod 101 is positioned in the state shown by the imaginary line in the figure and waits for the bushing rod 101 to rise.

On the other hand, when the push rod 101 returns to its original position after the tire valve 39 has been press-fitted into the preceding wheel U as described above, its displacement is detected by the reed switch attached to the horizontal operating pneumatic cylinder 99. The signal is sent to the vertically operating pneumatic cylinder 100, which causes the cylinder 100 to extend and move the bushing rod 101 upward toward the movable body 72, which is on standby for reversal. During its ascent, the bushing rod 101 inserts the insertion part 101c at the tip into the small hole 10B of the tire pulp holder, and inserts the abutting part 101b into the concave hole 107, and the tire pulp holder is transferred for preliminary operation. When this is completed and the highest position is reached, the reed switch attached to the vertical operating pneumatic cylinder 100 is operated, and the pneumatic cylinder 86 of the transfer device W is operated to reduce the tire pulp receiver, and the locking rod 89 is is pulled out from the insertion hole 75 to release the locking action of the tire valve holder, and the tire pulp holder is substantially delivered to the bushing rod 101. On the other hand, due to the operation of the reed switch, the vertically operating pneumatic cylinder 100 starts to contract, and the bushing rod 101 is moved downward along the forward path, and the tire valve holder held at the upper end of the bushing rod 101 is moved as shown by the imaginary line in FIG. As shown, the valve locking hole 7 of the movable body 72
3 and reaches its lowest position, that is, the original position, the reed switch that detects the displacement of the vertically operating pneumatic cylinder 100 is activated, the rotary actuator 93 is driven in the reverse direction, and the drive shaft 94 is rotated as shown in the figure. The movable body 72 rotates upward clockwise and returns to its original position. After this,
As the movable body 72 returns, the aforementioned limit switch operates and the stopper 71 operates, and one tire valve 39 is again supplied into the valve locking hole 73, waiting for the next operation.

Further, when the bushing rod 101 reaches the original position, the tire valve receiver transfer confirmation switch 59 functions. That is, the optical axis 62 of the detection light emitted from the phototube (A) of this switch 59 is located above the tip of the bushing rod 101 after being lowered, in other words, the delivered tire pulp 39
When the tire pulp 39 intersects with the appropriate position and the detection light is blocked by the tire pulp 39, the passing of the tire pulp 39 is detected, and the horizontal operating pneumatic cylinder 99 is extended and its forward movement is started. On the other hand, when the detection light is received by the light-receiving element 61, the tire pulp 39 detects that the tire pulp 39 is not being fed, resulting in an NG state. Therefore, since the missing part of the tire pulp receiver 39 and the fall of the tire pulp arm after the receiver has been delivered are detected in advance, it is possible to prevent the bushing rod 101 from running idle afterward and accidents caused by this. Become something. Thereafter, the bushing rod 101 is advanced by the pneumatic cylinder 99 and stops after a certain displacement, and waits for a signal from the valve hole stop position confirmation switch seconds while holding the tire pulp 39 at the upper end.

In addition, when a wheel W2 of a different diameter is carried in for the preceding wheel casting, the spacer attachment/detachment cylinder attaches and detaches the spacer each time by the wheel size detection switch 63, and the transfer process of the bushing rod 101 is performed via the guide 105. Adjust.

In this case, tire valves that can be shared by various wheel rows scheduled to be carried in may be stored in advance in the hopper 67 and the part holder 68.

As described above, the automatic tire valve insertion device for tubeless tires of the present invention includes a valve hole detection switch, a valve hole stop position confirmation switch, a wheel size detection switch, a tire pulp receiver, a passing confirmation switch, and a tire valve receiver, a passing device. Equipped with a valve press-in device and a valve press-in device, it is possible to automatically and continuously perform a series of operations from detecting the wheel valve hole to inserting tire pulp. Since the work is performed through detection and confirmation operations of each switch, high reliability of the work can be ensured and confusion in the next process can be avoided.

In particular, the valve hole detection switch, depending on whether it is activated or not, can detect in advance any obstacles to press-fitting the tire valve, such as defects in the tire valve hole, incorrect positioning of the valve hole, or clogging of the hole due to foreign matter. Accidents during press fitting can be avoided, and the valve hole stop position confirmation switch is configured to, for example, reposition the valve hole stop position to the normal position when the pulp hole stop position of the wheel is not at the normal position. If the valve hole is left in place, the stop position of the pulp hole can be corrected, and variations in the stop position due to malfunction of the mechanism can be compensated for, thereby promoting smooth and reliable tire valve press-fitting.

Moreover, in the present invention, a pair of valve hole detection switches and a pulp hole stop position confirmation switch are provided that operate according to the wheel size, and these are linked to the wheel size detection switch and are automatically used properly. Since the transfer process is adjusted, tire pulp can be automatically press-fitted according to the wheel size, which has the effect of encouraging widespread use of this type of automatic insertion device. In addition, when the tire pulp is supplied to the valve locking hole, the tire valve transfer device locks the tire pulp using a valve supply detection switch to prevent it from falling when the movable body is reversed, and also prevents the tire pulp from being transferred to the bushing rod. In this case, since the locking action of the tire pulp is released, the tire pulp can be received smoothly and reliably.

Furthermore, since the tip of the push rod of the valve press-fitting device is formed with a stepped portion that can engage with the rear end of the tire pulp, when press-fitting the tire pulp, the tip of the bushing rod touches the rear end of the tire pulp. If the bushing rod comes into contact with the rear end, excessive insertion of the bushing rod and tire pulp caused by this may occur.
On the other hand, when press-fitting the pulp, the bushing rod engages and holds the rear end of the tire pulp7, and its tip, that is, the pulp cap side, is opened, so the pulp This has the effect of preventing damage to the cap and avoiding damage to the bushing during that time.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the present invention, with a part shown in cross section, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a side view of Fig. 1.
Figure 4 is a cross-sectional view showing the main parts of the tire valve receiver, and Figure 5 is a cross-sectional view of the tire valve receiver showing the transfer state of the tire pulp receiver to the bushing rod. FIG. 6 is a plan view of FIG. 5, FIG. 7 is an enlarged cross-sectional view showing how the tire pulp is inserted, and FIG. 8 is a front view of the tire pulp. U...wheel, 39...tire pulp 53,
5γ...Pulp hole detection switch, 56, 5Fl...
・Valve hole stop position confirmation switch, 59...Tire valve holder is passing confirmation switch, 63...Wheel size detection switch, 69...Chute, 70...Tire valve holder is passing device, 72... Movable body, 73... Pulp locking hole, 77... Pulp supply detection switch, 86
．． 99°100...Fluid pressure cylinder, 93...Drive device, 101-...Push rod Fig. 7 Fig. 8

Claims (1)

[Scope of Claims] (i) A pulp hole detection switch that detects pulp holes when the wheel is rotating, stops the drive source of the wheel, and brakes and rotates the wheel to a fixed position; t, a valve hole stop position confirmation switch that detects whether or not tire pulp is press-fitted in the valve hole, and press-fits the bushing rod when the pulp hole stops at the fixed position, and a valve hole stop position confirmation switch that detects the wheel size when the wheel rotates and adjusts the wheel size. In addition to switching to the corresponding switch, there is also a wheel size detection switch that makes it possible to adjust the horizontal movement stroke of the bushing rod via a spacer attachment/detachment cylinder, and a tire pulp receiver of the bushing rod that moves the movable body containing tire pulp to the transfer area. The tire pulp receiver, which is positioned so as to be positioned, is connected to a transfer device, the tire pulp receiver is connected to a transfer confirmation switch that detects the presence or absence of tire pulp transferred to the bushing rod, and the tire pulp receiver is connected to a transfer device that detects the presence or absence of tire pulp that has been transferred to the bushel rod. An automatic tire pulp insertion device for a tubeless tire, comprising a pulp press-in device for press-fitting a valve into a pulp hole of a wheel. (2) The automatic tire pulp insertion device for a tubeless tire according to claim 1, characterized in that a valve hole detection switch and a valve hole stop position confirmation switch are provided in pairs corresponding to wheel sizes. . (3) The automatic tire pulp insertion device for a tubeless tire according to claim 1, wherein each of the switches enables the related backward operation after detecting a normal state. (4) a movable body provided with a pulp retaining hole for accommodating tire pulp in an inverted position; a pulp supply detection switch for detecting whether or not tire pulp is accommodated in the pulp retaining hole; A hydraulic cylinder that extends and can lock the tire pulp housed in the pulp locking hole, and a movable body that is reversed after locking the tire pulp so that the opening side of the pulp locking hole is positioned downward. 1. An automatic tire pulp insertion device for a tubeless tire, characterized in that the tire valve receiver equipped with a driving device has a passing device. (5) The automatic tire valve insertion device for a tubeless tire according to claim 4, wherein the lower opening of the chute for conveying tire pulp is positioned above the valve locking hole. (6) The fluid pressure cylinder is configured to contract when the bushing rod comes closest to the movable body after the movable body is reversed, thereby releasing the locking state of the tire pulp housed in the valve locking hole. An automatic tire valve insertion device for tubeless tires according to claim 4. (7) A tubeless tire according to claim 4, wherein the movable body is configured to return to its original position and start when the bushing rod holds the tire pulp and moves to a substantially lowermost position. Automatic tire valve insertion device. (8) A bushing rod that engages the rear end of the tire valve to hold the tire nozzle, a fluid pressure cylinder that moves the bushing rod horizontally and vertically, and a spacer that is linked to the wheel size detection switch to attach and remove the bushing rod. An automatic tire valve insertion device for a tubeless tire, characterized by having a pulp press-in device equipped with a spacer attachment/detachment cylinder for adjusting the day shift stroke. (9) A patent characterized in that the tip of the bushing rod is composed of a plurality of rods whose diameter is gradually reduced, and the tip is provided with a stepped portion that can engage with at least the end surface of the rank 7 portion of the tire valve. The automatic tire valve insertion device for tubeless tires according to claim 8. (Q) The automatic tire valve insertion device for a tubeless tire according to claim 8, wherein the fluid pressure cylinder is provided with a switch that operates by detecting the displacement of the piston rod.