KR101408851B1 - Apparatus for injecting air into tire - Google Patents

Abstract

The present invention relates to an apparatus for injecting air into multiple tires supplied sequentially. According to an embodiment of the present invention, the apparatus for injecting air into a tire includes an air injection table and a conveyer. The air injection table includes a rotational shelf part on which a tire including a wheel assembled therewith is mounted, and includes an air injection device which is installed above the injection table for injecting air into a tire. The conveyer is arranged on one side of the air injection table and receives a tire injected with air which is supplied by the air injection table.

Description

Apparatus for injecting air into tire

The invention relates to an apparatus for injecting air into a plurality of tires fed in turn.

Used automobile manufacturing plants require multiple tires assembled on wheels and filled with air as components of the finished car. Since standardized wheels and tires are used according to the type of vehicle and the tires assembled with the wheels are required according to the production speed of the automobile, assembly of wheels and tires by semi-automated devices, proper injection of air into the tires and suitability are tested do.

In the prior art, tires, wheels, and tire assemblies assembled with wheels and tires are each horizontally conveyed by a conveyor belt, in particular using a rotating work table to inject air into the tire assembly.

The work of injecting air into the tire assembly and moving the tire assembly from one conveyor to the work table or from a work table to another conveyor is still dependent on the skilled worker. Since the weight of the tire assembly is significant, there is a problem that an operator handling the tire assembly easily becomes fatigued.

Korean Patent No. 10-0669979 (2007.01.10)

The present invention makes it possible to inject air into a tire by one-touch operation. It also makes it possible to move by automatic method from the air-injecting table to the conveyor without the operator's involvement. In addition, the tires that move to the conveyor are automatically positioned in position without operator involvement.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an aspect of the present invention, there is provided an airbag apparatus comprising: a shelf unit on which a tire assembled with wheels is placed and rotated; and a plurality of air injectors installed on the shelf unit and injecting air into the tire And a conveyor disposed at one side of the air injection table for receiving and conveying a tire filled with air discharged from the air injection table, A casing connected to the elastic winder and having an injection hole formed at a lower end thereof, a vertically movable member mounted on the inside of the casing and being vertically moved in the casing by the supplied working air, A piston portion in which a main air passage is formed, a lower end portion of the casing in which the injection hole is formed It is disposed along the inner wall surface, and proposes a tire air injection device including the piston as the pressure fall portion is elastically deformed and the pressing pin portion that is an inner diameter of the elastic projection makes shrinking the elastic engagement portion and the lower end of the piston section according.

Wherein the shelf unit includes a pedestal on which a tire is mounted and which can be tilted in the radial direction of the shelf unit, a tilting unit that tilts the pedestal of the tire filled with air to ascend toward the center of the shelf unit to carry the tire from the pedestal to the conveyor And a position transfer unit for transferring the tire taken out from the air injection table to the center of the transfer roller, wherein the transfer unit includes a plurality of transfer rollers arranged in parallel and spaced apart from each other for rotating the tires, can do.

The position transfer unit is further provided with a belt for supporting a lower end portion of a tire moved toward the conveyor, a belt for transferring the tire in the lateral direction, a transfer unit having a motor for driving the belt, And a lifting portion that protrudes or lowers the belt higher than the conveying roller.

The conveyor includes an aligning portion for aligning the position of a conveyed tire, the aligning portion is disposed on one side and the other side of the conveyor so as to face each other and is rotatably mounted on a horizontal plane, A pair of contact branches contacting the outer surface of the tire are supported at predetermined angles to form lattice-like support brackets, a link connection portion connecting the support brackets to rotate the support brackets in opposite directions, And an actuator coupled to the support bracket and rotating the support bracket.

Here, the length of the contact branch which first contacts the tire moving forward is longer than that of the other contact branch which comes into contact with the tire in the future, and a free-rotating roller may be mounted on the end of each contact branch.

According to the embodiment of the present invention, the involvement of the operator in the process of injecting the air of the tire, the process of conveying the air-injected tire to the conveyor, and the process of aligning the position of the conveyor are minimized. Thereby minimizing labor man- agement and improving productivity by improving labor-intensive traditional methods.

Specifically, the air injector ends the involvement of the operator at the level at which the operator connects the air injector to the tire air inlet. Therefore, a small number of operators can perform an air injection operation for a plurality of tires supplied sequentially.

In addition, since the air-injected tire is transported from the air injection table to the conveyor through the tilting pedestal, it is not necessary for the operator to carry the heavy tire directly. Thereby improving the working environment.

Also, by adopting the position transferring section using the ascending and descending belt, the tire can be stably transferred to the conveyor with high reliability.

In addition, by mounting the alignment unit, it is possible to process various tire performance tests in an automated manner such as a balance inspection in a work environment in which the involvement of an operator is minimized.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a main part of a tire air injection apparatus according to an embodiment of the present invention; FIG.
Fig. 2 is a front view of the air injection table adopted in the embodiment shown in Fig. 1; Fig.
3 is a plan view of a portion of the air injection table shown in Fig.
4 is a cross-sectional view of the air injector employed in the air injection table shown in Fig.
FIGS. 5 to 6 are cross-sectional views illustrating the state of use of the air injector shown in FIG. 4;
FIG. 7 is a side view showing the air injection table and the conveyor employed in the embodiment shown in FIG. 1; FIG.
8 is a side view showing the operation of the position transfer unit mounted on the conveyor;
9 is a front view showing the operation of the position transfer unit mounted on the conveyor;
10 is a plan view showing an alignment part mounted on a conveyor.
11 is a side view showing the alignment portion shown in Fig.
12 is a plan view sequentially showing the operation of the alignment portion shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

It should be noted, however, that the same names are used for the same or similar components.

In the following description, terms such as 'first', 'second', and the like are used to distinguish constituent elements whose technical meaning is within the same range for convenience. That is, any one configuration may be arbitrarily referred to as a 'first configuration' or a 'second configuration'.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, therefore, are not to be construed as limiting the technical spirit of the invention. It is to be understood that the invention is not to be limited by any of the details of the description to those skilled in the art from the standpoint of a person skilled in the art that any or all of the drawings shown in the drawings are not necessarily the shape,

1 shows a main part of a tire inflation apparatus 100 according to an embodiment of the present invention. The tire air injection apparatus 100 according to the embodiment of the present invention is an apparatus for charging air into a tire T assembled with wheels.

Although not shown, a tire feeder, a wheel feeder, a wheel and a tire assembly machine, and the like may be further connected to the transfer line for supplying the tire assembled with the wheel to the air injection table 1. Here, the tire feeder or the wheel feeder includes a conveying means such as a conveyor belt, and a multi-joint robot or an equipment or apparatus such as a workbench for assembling a wheel and a tire using an assembling tool is used.

The tire T coupled with the wheel is conveyed to the air injection table through a known conveying means such as a conveyor belt 101. [ The tire T is dropped from the end of the conveying means or is manually moved to the air injection table 1 and the operator injects air into the tire T. [

The air injection table 1 is provided with a shelf portion 12 which rotates in accordance with a working speed for filling air or a feeding speed of a tire. That is, the tire supplied from the conveyor belt or the like is rotated together with the rotation of the shelf portion and stays in the air injection table 1, and is discharged to the conveyor 3 described later. So that the tire T is charged with air during the time that the tire stays in the air injection table 1. [

The tire T filled with air is transferred to the conveyor 3 disposed at one side of the air injection table 1. In the embodiment of the present invention, the air injection table moves the tire above the conveyor, and the position transfer unit 4 provided on the conveyor is configured to receive the tires and transfer them to the position. Thus, the tires are transferred from the air injection table 1 to the conveyor 3 through automated means, without operator involvement. This will be explained in detail later.

Thereafter, the tire T is advanced and conveyed on the conveyor 3 for further inspection. Wherein the additional test includes one of various tests as known in the art, such as tire balance checking.

Some of the automated tire testing equipment 102 require the tires to enter through predetermined locations and paths. Or a plurality of tires T may be injected into the inspection equipment 102 at regular intervals. To this end, the conveyor is provided with an alignment part (5) for aligning the tire placed on the conveyor. The alignment portion 5 grasps the outer circumferential surface of the conveyed tire while lying on the conveyor 3 so that the tire stays at a specific position (for example, the center line of the conveyor) on the conveyor.

After all the inspections are completed, the tire is transported along a separate conveyor belt and taken out from the tire inflation device 100.

The air injection table 1 is shown in Figs. 2 to 3 and Fig.

The air injection table 1 includes a rotating rack 12 on which a tire T assembled with wheels is placed and rotated and a plurality of air injectors 2 provided on the upper portion of the rack 12. [

The drive motor 121 for rotating the shelf unit 12 is a power source of a known configuration such as an electric motor or a hydraulic motor. The shelf portion 12 includes a shelf 122 in which the tire is located and a structure 123 in which the air injectors 2 are suspended. The shelf portion 12 is a plate structure raised on the table frame 11 which is erected on the ground, and is rotated by the driving motor 121. The rolling wheels 125 provided at the lower portion of the shelf 122 enable the shelf portion 12 to be stably rotated on the horizontal plane.

The shelf portion 12 includes a pedestal 13 on which the tire T is raised and which can be tilted in the radial direction of the shelf portion.

Specifically, the plurality of pedestals 13 are disposed radially with respect to the center of the upper surface of the circular shelf 122. As shown in FIG. 1, there are four pedestals 13 in the illustrated embodiment, but in other embodiments the number of pedestals may vary. The rotation of the shelf portion 12 is intermittently performed. 1, the conveyor belt 101 and the pedestal 13 are horizontally aligned with each other, the tire T transferred from the conveyor belt 101 or the like is received and rotated intermittently in a counterclockwise direction, ) To discharge the tire. That is, while receiving the tire T from the conveyor belt 101, the rotation of the shelf portion 12 is stopped for the time period for discharging the other tire T to the conveyor 3. [

The pedestal 13 is disposed above the shelf 122 so as to be inclined downward toward the center of the shelf 12. A plurality of freely rotatable rollers 131 are provided on the bottom surface of the pedestal 13 so that the tire T moved onto the pedestal 13 is lifted up along the inclined bottom of the pedestal 13, And is moved to the center. 2 and 3 show a plurality of side rollers 132 which contact the side and front ends of the right tire T on the pedestal 13. In Fig. The inclined arrangement of the pedestal 13 and the rollers 131 and the side rollers 132 restrain the raised tire T to the pedestal 13 to prevent the tire T from being arbitrarily disengaged from the shelf.

The air injector 2 is provided at the upper part of the air injection table 1 by the structure 123 connected to the shelf. Specifically, the structure 123 is equipped with an elastic winder 124, and the air injector 2 is suspended from a line extending from the elastic winder 124. The string of the elastic winder 124 is automatically rewound so that the air injector 2 is positioned higher than the tire T at normal times. The configuration of the elastic winder 124 that automatically winds the string is well known, and therefore, a detailed description thereof will be omitted.

An air hose 126 is connected to the air injector 2. Although not shown in detail, the air hose is provided with a control hose for controlling the operation of the air injector and a main hose through which air to be charged is transferred to the tire. The control hose and main hose are connected to an air supply device (not shown) for supplying or discharging compressed air. The construction of such an air supply device is well known in the art. The movement of the air through the control hose and main hose, i.e., the operation of the air supply device, is controlled by a control unit (not shown).

The configuration and operation of the air injector 2 will be described later.

2 and 7, one end of the pedestal 13 is hinged to the edge of the upper plate of the shelf 122, so that the pedestal 13 can be tilted in the radial direction of the shelf 12. Fig. 2 shows a normal pedestal 13 which is not tilted, and Fig. 7 shows a pedestal 13 with a tilted state.

A tilting operation part 133 is mounted on the table frame 11 to tilt the pedestal 13. In the illustrated embodiment, the tilting operation portion 133 is an actuator mounted on the table frame 11. The elongated rod of the actuator lifts the end of the pedestal 13 facing the center of the shelf so that the pedestal 13 is inclined upward toward the center of the shelf. Therefore, the tire T flows down on the roller 131 on the bottom of the inclined pedestal 13 and moves up the conveyor 3.

The tilting operation portion 133 can be replaced with various device means for lifting the end portion of the pedestal in addition to the illustrated actuator.

Referring again to FIG. 1, the conveyor 3 is a device for forwarding and transporting a tire. The conveyor 3 is provided with a plurality of conveying rollers 31 that are spaced apart from each other and rotate. The end portions of the respective conveying rollers 31 are rotatably coupled to a cross bar 32 disposed in parallel in the front-rear direction and rotate in the same direction through power transmission means (not shown) such as a chain or a pulley. The construction of such a conveyor can be the same as that of the known construction.

In Fig. 7, the conveying roller 31 of the conveyor 3 is located at the same or lower position than the pedestal 13 of the air injection table 1. As the pedestal 13 is tilted, the tire T filled with air slides toward the conveyor 3. At this time, the tire T moves in a direction parallel to the rotation axis of the feed roller 31, so that sometimes the tire can not be seated directly above the feed roller due to the friction between the tire and the feed roller.

The position transfer unit 4 stably transfers the tire T carried out to the air injection table 1 to the center of the transfer roller 31. [

Figures 7 to 9 are drawings related to the position transfer unit.

The position transfer unit 4 includes a belt 411 for supporting the lower end of the tire T moved toward the conveyor 3 and for transferring the tire in the left and right direction and a motor 412 for driving the belt 411 (Not shown). In addition, the position transfer unit 4 includes a lift portion 42 that protrudes or lowers the belt 411 higher than the conveyance roller through a space between adjacent conveyance rollers 31.

The elevating portion 42 includes a fixed frame 421 mounted on the frame of the conveyor 3 and an elevating frame 422 movable upward and downward relative to the fixed frame 421. A plurality of pillars 423 extending to the lower portion of the lifting frame 422 are restrained in a cylindrical hole provided in the fixed frame 421 so that the lifting frame 422 is restricted from other movements other than the height movement. The height adjustment of the lift frame 422 is performed by operating a power source such as the actuator 424.

Unlike the illustrated embodiment, the stationary frame may be disposed in a raised form on the ground, and may not be directly coupled to the frame of the conveyor. Also, the elevation control of the elevating frame can be replaced by various elevating machine structures.

The conveying unit 41 is coupled to the lifting frame 422 and moves upward or downward together with the lifting frame 422.

The conveying unit 41 includes a plurality of pulleys 413 connected to the bracket 415, a motor 412, a speed reducer 414, and a belt 411. Here, the speed reducer 414 may be omitted depending on the performance of the motor 412.

8, the spacing distance of the pair of spaced pulleys 413 connected at the same height to the upper end of the bracket 415 is equal to the length of the conveying roller 31. [ A belt 411 connected to the pulleys 413 forms a horizontal belt line at a highest position in the conveying unit 41. The belt 411 wound on the pulley 413 connected to the speed reducer is rotated in one direction by the rotation of the motor 412. [

9 is a front view of the position transfer unit. The pairs of the pulleys 413 described above and the belts 411 forming the upper horizontal belt line are provided side by side. Depending on tire size, more than three belts may be installed by increasing the number of brackets.

A pair of parallel pulleys 413 and belts 411 located at the upper end of the conveying section 41 are located between the conveying rollers 31 separated from each other. Therefore, when the conveying unit 41 is raised, the horizontal belt line located at the upper end of the conveying unit can be positioned higher than the conveying roller 31 without being interfered with the conveying rollers 31.

The operation of the position transfer unit 4 will be described with reference to the accompanying drawings.

In FIGS. 8 and 9, the solid line indicates the position of the tire in a state in which the conveyance portion is lowered, and the dotted line indicates the position of the tire in a state in which the conveyance portion is elevated.

When the tire T is carried out from the pedestal 13 of the air injection table 1, the elevation portion 42 is operated and the conveyance portion 41 is elevated. The height of the belt line at the upper end of the conveying unit 41 is higher than the upper end of the conveying roller 31. [ Therefore, the lower portion of the tire T moved to the upper portion of the conveyor 3 is supported by the belt 411, not the transport roller.

The tire T is transported to the center of the conveyor 3 by the operation of the motor 412. At this time, the support roller 33 on one side of the conveyor 3 prevents lateral movement of the tire T, thereby preventing the tire T from coming off the conveyor 3 and out.

The height of the belt 411 at the upper end of the conveying unit 41 is lowered below the upper end of the conveying roller 31 and the tire T is supported by the conveying roller 31 when the conveying unit 41 descends. As the transport roller 31 rotates, the tire T is now moved forward.

As the position transfer unit 4 is provided, it is possible to automatically transfer the tire T from the air injection table 1 to the conveyor 3 in a stable manner. The tire coupled with the wheel may not be moved from the air injection table directly to the conveyor, so that the convenience of the operation is greatly improved.

4 to 6 are views related to the air injector.

The air inlet (V) employed in the tire in which the air inlet is used is a shrouder valve. As is well known, the shrouder valve has a valve seat S protruding from the inside of the cylindrical body and blocking the air inlet. In order to inject or discharge air, the valve seat (S) must be pressed and pushed.

The air injector 2 includes a casing 21, a piston portion 22, an elastic engaging portion 23 and a pressing pin portion 24.

The casing 21 forms the outer shape of the air injector 2 and forms a space in which the piston portion 22, the elastic engaging portion 23 and the pressing pin portion 24 are mounted. The casing 21 is formed by assembling several components.

Referring to the drawing, the upper end of the casing 21 is connected to the line of the elastic winder. The upper portion of the casing 21 is formed with a hose connection port 21a connected to the main hose and another hose connection port 21b connected to the control hose.

The lower end of the casing 21 protrudes a long length, and an injection hole 211 is formed at an end thereof. The tip of the tire air inlet V can enter the inside of the casing 21 through the injection hole 211 with a diameter slightly larger than the outer diameter of the tire air inlet V. [ The periphery of the injection hole 211 is formed with a step. This step prevents the resilient bite from escaping through the injection hole.

The piston portion 22 is mounted inside the casing and moves up and down within the casing 21 by operating air supplied through the control hose. To this end, a disk-shaped air sheet 221 having a sealing ring around the piston 22 is formed. The working air pushes the piston portion 22 downward while filling the upper space of the air seat 221. When the working air filling the upper space of the air sheet 221 is forcibly discharged, the piston portion 22 is raised while a negative pressure is formed in the upper space.

A vertical main air passage 222 through which the air supplied from the main hose passes is formed at the center of the piston portion 22. And a circular tube 223 extending downward from the air sheet 221 is provided. The length of the cylindrical pipe 223 is a length in which the end portion is in contact with the upper end of the elastic bite portion 23 when the piston portion 22 is lifted. The inside of the cylindrical tube 223 constitutes a part of the main air passage 222, and a spring 225 is provided therein. The spring 225 is supported at its end at a step formed inside the piston and at the other end supported by the pressing pin 24.

The elastic bite portion 23 is mounted on the inside of the injection hole 211 of the casing 21. The elastic bite portion 23 is made of a synthetic rubber material capable of elastic deformation. The resilient engagement portion 23 has a cylindrical shape and an inner diameter larger than the outer diameter of the tire air inlet V that enters the casing 21 through the injection hole.

Shaped elastic bump 23 is disposed along the inner wall surface of the lower end of the casing 21 so that the tip end of the tire air inlet V can enter into the casing 21 without interference.

A groove 231 is formed in the outer circumferential surface of the elastic binding portion 23 along the circumference. A ring member 224 is interposed between the elastic bite portion 23 and the lower end of the circular tube 223. The cross-sectional area of the ring member 224 is equal to or larger than the cross-sectional area of the resilient contact portion 23.

When the piston portion 22 descends, the elastic bite portion 23 is elastically deformed as the upper end portion is pressed by the circular tube 223. At this time, since the outer circumferential surface and the lower end of the elastic bite portion 23 are in a state of being trapped by the casing 21, the elastic bite portion 23 is elastically deformed do. That is, as the cylindrical resilient bending portion 23 is pushed, the inner wall surface is elastically deformed so as to be convex, so that the inner diameter is reduced.

When the piston 22 is lifted and the force applied to the elastic bite portion 23 is removed, the elastic bite portion 23 is resiliently restored to the cylindrical shape having the original vertical wall surface.

The upper end portion of the pressing pin portion 24 is pressed by the spring 225 and is elastically protruded to the lower portion. The outer diameter of the lower portion of the pressing pin portion 24 is formed to be narrower than the outer diameter of the upper portion. The step 241 formed by changing the outer diameter of the pressing pin portion 24 is caught by the ring member 224 so that the pressing pin portion 24 does not protrude to the outside through the injection hole 211. [ A discharge hole 242 communicating with the main air passage 222 is formed at the lower end of the pressing pin 24.

The operation of the air injector will be described with reference to Figs. 2 and 4 to 6. Fig.

When a tire T coupled with a wheel is supplied to the air injection table 1 and is seated on the pedestal 13, the operator pulls the air injector 2 located at the upper portion and inserts the injected air into the injection port V.

FIG. 5 shows a state in which the tire air inlet V is inserted into the injection hole 211. The outer circumferential surface of the tire air inlet (V) is surrounded by the inner wall surface of the elastic bite portion (23). Also, the spring 225 is compressed by the valve seat S of the inserted tire air inlet V so that the pressing pin 24 is raised upward.

The state in which the user operates the air injector by pressing an operation switch (not shown) is shown in Fig.

When the operation is started, participation of the control unit (not shown) is started. The control unit supplies the control air through the control hose to lower the piston unit 22. [ The circular pipe 223 constituting a part of the piston portion 22 is also lowered so that the ring member 224 and the elastic engaging portion 23 are pressed from the upper side to the lower side. The pressed portion 23 is deformed into a swollen shape at the center to strongly urge the outer peripheral surface of the tire air inlet V. In this state, the operator releases the air injector from the hand. The elastic engaging portion 23 holds the tire air inlet V so that the air injector does not separate from the tire air inlet due to a force larger than the force that the elastic winder pulls the air injector.

The groove 231 formed in the outer circumferential surface of the elastic bite portion 23 induces the inner circumferential surface of the elastic bite portion 23 to be convexly deformed so as to reduce the inner diameter of the elastically deformed elastic bite portion 23, This makes it easier to cover the perimeter.

The elastic deformation of the elastic bite portion 23 is hermetically sealed so as to prevent air from escaping between the elastic bite portion 23 and the tire air inlet V when high pressure air is injected into the tire through the main air passage 222 .

The pressing pin is lowered by the spring 225 which is further compressed with the lowering of the piston portion 22 so that the valve seat S of the tire air inlet V is pressed to allow the air to enter the inside of the tire T I will. That is, the pressing pin portion 24 presses the valve seat S by the downward movement of the piston portion 22 and the repulsive force of the spring.

At this time, when the downward length of the piston portion 22 exceeds the length at which the valve seat S can be lowered by the pressing pin portion 24, the spring 225 is further compressed, So as not to press the valve seat S. Therefore, it is possible to prevent breakage of the tire air inlet V which can be generated as the valve seat is excessively pressed.

After the piston unit 22 is lowered through the control air to open the valve seat S while holding the tire air inlet V, the control unit supplies high pressure air to the tire T through the main hose .

When the tire is filled with air at an appropriate pressure by the compressed air supplied through the main air passage and the discharge hole, the sensor provided in the control section senses the air to stop the injection of air through the main hose and supplies the air to the casing through the control hose Inhale and remove the control air.

As a result, the piston portion 22 is elevated, the elastic bite portion 23 is restored, and the pressing pin portion 24 pressed by the valve seat S rises. In other words, the state returns to the state shown in FIG. 5 again. The elastic winder elastically winds the air injector upward to pull the air injector away from the tire air inlet.

As described above, in the air injector 2 proposed by the present invention, after the operator connects the air injector to the tire air inlet and operates the operation switch, the air injection and the air injector are automatically recovered so that the operator can cope with the next tire It gives you time to spare.

1 and FIG. 10 to FIG. 12 are views related to the alignment unit according to the embodiment of the present invention.

The alignment unit 5 aligns the tire T to be conveyed and is provided at the end of the conveyor 3 connected to the inspection equipment 102.

The aligning portion 5 according to the embodiment of the present invention includes a pair of support brackets 51 in contact with the tire, a link connecting portion 53 connecting the support brackets 51, and a support bracket 51, (Not shown).

The support bracket 51 can be brought into contact with the outer circumferential surface of the tire T by being positioned higher than the conveying roller 31 of the conveyor 3. [ The support bracket 51 is coupled to a rotary shaft 52 erected on each cross bar 32 forming one side and the other side of the conveyor 3. The support bracket 51 is rotated together with the rotation shaft 52 by being fixed to the rotation shaft 52.

10, the support bracket 51 is a lattice-like plate member having a pair of contact branches 511 protruding at an obtuse angle with respect to a portion coupled to the rotary shaft 52 as a reference. The angle between the contact branches 551 can be changed according to the outer diameter size of the tire T to be aligned and the distance between the two cross bars 32. [

At the end of the contact branch 511, a roller 512 capable of freely rotating when contacting the outer peripheral surface of the tire is mounted.

The length of the contact branch 511 which is first contacted by the forward movement of the tire among the pair of contact branches 511 formed on any one of the support brackets 51 is formed to be longer than other contact branches 511 which come into contact with each other in the future have. This is because, in the configuration of the support bracket 51 that rotates on the horizontal plane in the limited angular range, the tire T which is largely deviated from the required alignment position does not contact the contact branch 511 extending in the direction opposite to the advancing direction, So that it can enter between the brackets 51.

The lattice-shaped support brackets 51 are arranged so as to face one side of the conveyor 3 and the other side. That is, the supporting brackets are symmetrical with respect to the virtual alignment line formed while the center of the aligned tire T moves forward.

The link connecting portion 53 is a link connecting member that connects the pair of opposing supporting brackets 51 and the supporting brackets 51 interlock with each other and rotate relative to each other.

The link connecting portion 53 is disposed below the conveying roller 31 so as not to interfere with the movement of the tire. The link connecting portion includes a rotating arm 531 fixed to each rotating shaft 52 and rotating together with the rotating shaft, and a length member 532 connecting the rotating arms 531. The linking of the rotating arm 531 and the length member 532 causes the remaining supporting bracket 51 to rotate counterclockwise in the same angular range when one of the supporting brackets 51 rotates clockwise.

One of the rotating arms 531 is provided with an angle stopper 55 for limiting the rotation angle of the rotating shaft. The angle stopper 55 includes a cylindrical protrusion 551 extending downward from the rotary shaft 52 and an elongated hole 553 through which the cylindrical protrusion 551 passes while being bent in a shape curved in accordance with the locus of the cylindrical protrusion 551 And includes a stopper bracket 552 which is fixed to the frame of the conveyor 3.

As the rotary shaft 52 rotates, the cylindrical projection 551 moves along the long hole 553, and the rotation shaft 52 is further rotated as the outer peripheral surface of the cylindrical projection 551 is caught by the end of the long hole 553 ≪ / RTI > This angle stopper 55 forces the support bracket 51 to rotate only within an intended angle range to improve the reliability of the tire alignment.

The driving force for rotating the rotating shaft 52 is taken by the actuator 54 connected to the rotating arm. The link connection portion 53 and the support brackets 51 rotate counterclockwise in the clockwise or counterclockwise direction due to the extension or expansion and contraction of the actuator 54. [

The actuator 54 is disposed at a lower height than the conveying roller 31 so that it does not interfere with the forward moving tire T similarly to the link connecting portion 53. [ The actuator 54 is fixed to the frame of the conveyor.

12, the operation of the alignment unit 5 is shown in the order of (a), (b), and (c). 12, the length member 532 is simplified to a line, and the actuator is omitted. The block arrow indicates the forward movement direction of the tire by the conveyor. For convenience of explanation, the upper support bracket is referred to as a first support bracket 51a and the lower support bracket is formed as a pair with the first support bracket as a second support bracket 51b do.

12A shows the positioning portion 5 in the standby state before the tire T has reached the alignment portion 5. As shown in Fig.

As the rod of the actuator is extended, the first support bracket 51a is rotated in the counterclockwise direction as much as possible, and the second support bracket 51b is rotated in the clockwise direction as much as possible. As a matter of course, the first support bracket 51a and the second support bracket 51b are rotated in opposite directions to each other by the link connecting portion 53. [

The contact branches 511a at the tip end protruding from the contact branches provided on the first support bracket 51a and the second support bracket 51b substantially in the same direction as the traveling direction of the tire are formed long, Is smaller than the outer diameter. That is, the condition that the tire can not move forward without going through the contact branches 551 is established.

On the other hand, among the contact branches provided on the first support bracket 51a and the second support bracket 51b, the rear contact branches 511b protruding in a direction substantially reverse to the traveling direction of the tire extend beyond the outer diameter of the tire And extends beyond the width of the conveying roller 31 almost. The contact branches 511b at the rear end are shorter than the contact branches 511a at the front end so that the tire T positioned at a substantially eccentric position at the position to be aligned at the original position is connected to the rear end contact branches 511b So that it can come into contact with the contact branches 511a at the tip.

12 (b) shows that as the tire T enters the support bracket 51, the actuator operates to rotate the first support bracket 51a in the clockwise direction (the second support bracket 51b is rotated counterclockwise ) Are shown in Fig.

The entry of the tire T into the support bracket 51 is detected by a sensor (not shown) installed on the conveyor. For example, it is possible to detect when the light receiving sensor is hiding the light source received by the tire, or to confirm the entry of the tire through the ultrasonic sensor. Such sensing means are well known.

As the first support bracket 51a and the second support bracket 51b rotate, the contact branches grip the outer peripheral surface of the tire. During this process, the tire T which has been eccentric to the advancing direction is aligned in the middle of the first supporting bracket 51a and the second supporting bracket 51b.

12 (c) shows a state in which the first supporting bracket 51a is further rotated in the clockwise direction by the expansion and contraction operation of the actuator. As shown in Fig. 12 (a), the tangential contact branches 511a provided at the first supporting bracket 51a and the second supporting bracket 51b, respectively, do. Further, the rear contact branches 511b are pushed in the direction in which the tire advances. At this time, the rear contact branches 511b are pushed in the same symmetrical positions of the aligned tires T, so that the aligned tires can be moved forward without being eccentric again.

After detecting that the tire has completely passed through the alignment portion, the actuator operates in the opposite direction again to return to the standby state in (a) of FIG. 12 and waits for the next tire.

This alignment part 5 allows automatic alignment of the tires entering the inspection equipment, thereby reducing the labor required for the alignment of the tires.

100: injection device
101: Conveyor belt 102: Inspection equipment
1: air injection table 11: table frame 12: shelf portion
121: drive motor 122: shelf 123: structure 124: elastic winder
125: rolling wheels 126: air hose 13: pedestal 131: roller
132: side roller 133: tilting operation part
2: air injector
21: casing 21a, 21b: hose connector 211: injection hole
22: piston portion 221: air seat 222: main air passage 223:
224: ring member 225: spring 23: elastic bite portion 231: groove
24: joining pin 241: step 242: exhaust hole
3: conveyor 31: conveying roller 32: cross bar 33: support roller
4: Position transfer unit
41: conveying unit 411: belt 412: motor 413: pulley
414: Reducer 415: Bracket 42: Elevating portion 421: Fixing frame
422: lift frame 423: column 424: actuator
5:
51, 51a, 51b: Support brackets 511, 511a, 511b:
512: roller 52: rotating shaft 53: link connecting portion 531: rotating arm
532: length member 55: angle stopper 551: cylindrical projection
552: Stopper bracket 553: Long hole 54: Actuator
T: Tire V: Inlet S: Valve seat

Claims (5)

An air injection table provided on a top of the shelf and having a plurality of air injectors for injecting air into the tires;
And a conveyor disposed at one side of the air injection table for receiving and conveying the air filled in with the air taken out from the air injection table,

The air injector
A casing connected to the upper portion of the air injection table by an elastic winder and having an injection hole formed at a lower end thereof;
A piston unit mounted in the casing and moving up and down in the casing by the supplied working air and having a main air passage for passing air to be charged into the tire;
An elastic engaging portion disposed along an inner wall surface of a lower end portion of the casing formed with the injection hole, the elastic engaging portion being pressed and elastically deformed as the piston portion descends; And
And a pressing pin portion elastically protruding from a lower end portion of the piston portion. The method of claim 1,
The shelf
A pedestal for raising the tire and capable of tilting in the radial direction of the shelf,
And a tilting operation portion that tilts the base of the tire filled with air upward toward the center of the shelf to take out the tire from the base to the conveyor,
The conveyor
A plurality of conveying rollers spaced apart from each other in parallel and rotating to advance the tire,
And a position transfer unit for transferring the tires taken out from the air injection table to the center of the transfer roller. 3. The method of claim 2,
The position transfer unit
A conveying unit that supports a lower end portion of a tire moved toward the conveyor and conveys the tire in the left-right direction, a conveying unit having a motor for driving the belt,
And a lift portion that protrudes or lowers the belt higher than the conveyance roller through a space between adjacent conveyance rollers. The method of claim 1,
The conveyor
And an aligning portion for aligning the position of the tire to be conveyed,
The alignment portion
A pair of contact branches contacting the outer surface of the tire moving forward by the conveyor are protruded at a certain angle to form a lattice shape Supporting brackets,
A link connecting portion connecting the support brackets to rotate the support brackets in opposite directions,
And an actuator coupled to either one of the support brackets for rotating the support bracket. 5. The method of claim 4,
The length of the contact branch first contacting the tire moving forward is longer than that of the other contact branch contacting the tire in the future,
And a free-rotating roller is mounted on an end of each contact branch.

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