JPH05187952A - Replacing method of rim in tire uniformity machine - Google Patents

Abstract

PURPOSE:To execute replacement of a rim with high efficiency, to make an apparatus small in size as a whole and thereby to make the cost of manufacture low and further to simplify a structure and thereby to facilitate maintenance. CONSTITUTION:At the time of replacement of upper-side and lower-side rims 33 and 63, a pallet 80 is brought in onto an already-installed conveyor 69 for conveyance of a tire and then the upper-side and lower-side rims 33 and 63 disengaged from an upper spindle 14 and a lower spindle are transferred onto the pallet 80 and carried out. Thereafter next upper- and lower-side rims 33 and 63 put on the pallet 80 are conveyed in by the conveyor 69 and then fitted to the upper spindle 14 and the lower spindle. According to this constitution, a distance of movement of the upper- and lower-side rims 33 and 63 is shortened and any specific assembling operation stage is dispensed with.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for holding a tire and replacing a lower rim when the size of a test tire is changed in a tire uniformity machine.

[0002]

2. Description of the Related Art Conventionally, in a tire uniformity machine, the upper and lower rims have been replaced by a method as described in, for example, Japanese Patent Application Laid-Open No. 3-47742. This method involves moving the lower spindle of the tire uniformity machine upward to raise the lower rim until it contacts the upper rim from below, separating the upper rim from the upper spindle, and lowering the lower spindle. The upper and lower rims are integrally lowered by moving the upper and lower rims, and on the way of the lowering, the upper rim and the lower rim are placed on the tire assembly work table installed below the tire carrying means for carrying the tire for which the uniformity test is carried. The process of transferring the lower rim separated from the spindle, rotating the assembly workbench to transfer the lower rim to another position, and removing the new upper and lower rims mounted on the assembly workbench. The process of transferring to the position directly above the lower spindle, and moving the lower spindle upward, and during the movement, The process of transferring the rim from the assembly workbench to the lower spindle, and moving the lower spindle until the upper rim contacts the upper spindle to connect the upper rim and the upper spindle to each other and the lower rim to the lower spindle. And a step of performing.

[0003]

However, in such a conventional rim replacement method, when the upper and lower rims are replaced, the minimum distance that the lower spindle moves is set below the tire conveying means. The long distance between the assembled workbench and the upper spindle (actually this long distance
Since it is the sum of the fixed distance from the assembly work table to the lower limit of the lower spindle), the stroke of the hydraulic cylinder for moving this lower spindle becomes longer, resulting in a decrease in work efficiency and There is a problem that the entire apparatus becomes large and expensive, and maintenance is troublesome. Furthermore, since a special assembly workbench is required for replacement, there is a problem that the structure becomes complicated and expensive.

It is an object of the present invention to replace a rim with high efficiency, reduce the size of the entire apparatus to reduce the manufacturing cost, simplify the structure, and facilitate maintenance.

[0005]

The object is to perform a uniformity test by moving a lower spindle of a tire uniformity machine upward to raise a lower rim until it contacts an upper rim from below. By loading the empty pallet by the conveyor that conveys the tires to the intersecting position where the elevator path of the lower rim intersects the conveyor, removing the upper rim from the upper spindle, and moving the lower spindle downward. The steps of lowering the upper and lower rims integrally and transferring both the upper rim and the lower rim detached from the lower spindle from the lower spindle to an empty pallet during the lowering, and the operation of the conveyor, While carrying out the pallet with the lower rim transferred from the intersection position,
A step of loading a new pallet on which the upper and lower rims are placed to the intersection position, and a step of moving the lower spindle upward and transferring the upper and lower rims from the pallet to the lower spindle during the movement. And further moving the lower spindle until the upper rim abuts the upper spindle to connect the upper rim and the upper spindle to each other,
Further, it can be achieved by a rim replacement method including a step of connecting the lower rim to the lower spindle and carrying out an empty pallet from the intersecting position by operating the conveyor.

[0006]

When the type of tire used for the uniformity test is changed, the upper and lower rims must be replaced according to the change. In this case, first, the lower spindle is moved upward, and the lower rim connected to this lower spindle is raised until it contacts the upper rim from below. Next, an empty pallet is carried in to a crossing position where the elevator path of the lower rim and the conveyor intersect with each other by a conveyor that transports tires. At the same time, the upper rim is disengaged from the upper spindle, and the upper rim is placed on the lower rim. Next, by moving the lower spindle downward to the lower limit, the upper and lower rims are integrally lowered,
During the descent, both the upper and lower rims are transferred from the lower spindle onto an empty pallet. The lower rim may be detached from the lower spindle at any time between the start of the replacement work and the transfer of the upper and lower rims to the pallet. Next, the conveyor is operated to carry out the pallet on which the upper and lower rims are transferred from the intersecting position, and carry in the pallet on which the new upper and lower rims are mounted to the intersecting position. Next, the lower spindle is moved upward, and the upper and lower rims are transferred from the pallet to the lower spindle during the movement. next,
The lower spindle is further moved until the upper rim abuts the upper spindle to connect the upper rim and the upper spindle to each other, and together with this, the lower rim and the lower spindle are connected and the conveyor is operated to empty the Carry out from the intersection of pallets. In this way, when exchanging the upper and lower rims, the distance that the lower spindle moves is
At a minimum, a short distance between the conveyor and the upper spindle (actually, this short distance plus a certain distance from the conveyor to the lower limit of the lower spindle) will improve work efficiency. The device is small, the manufacturing cost is low, and the maintenance is easy. further,
Since the pallet is loaded and unloaded using the conveyor which is always installed in the uniformity machine, no special assembly worktable is required, the structure is simple and the manufacturing cost is low.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1, 2, and 3, 11 is a tire uniformity machine, and this tire uniformity machine is shown.
A hollow outer cylinder extending vertically in the upper part of the frame 12 of 11
13 is attached. An upper spindle 14 extending vertically is rotatably inserted in the outer cylinder 13, and the upper spindle 14 is a motor fixed to the upper end of the frame 12.
Rotated by 15 during tire testing. The lower end surface of the upper spindle 14 is formed with a conical hole 16 having a substantially truncated cone shape that is tapered upward, and the bottom surface of the conical hole 16 is formed with an air passage 17 formed in the upper spindle 14. Is open at one end. The other end of the air passage 17 opens to the outer periphery of the lower end of the upper spindle 14 and is connected to an air source (not shown). Reference numeral 18 denotes a plurality of cylinders, here two cylinders, which are attached to the outer periphery of the lower end portion of the upper spindle 14, and these cylinders 18 are equiangularly spaced in the circumferential direction and extend in the radial direction. Fixed blocks 20 extending in the radial direction are attached to the tip ends of piston rods 19 of these cylinders 18, respectively.
20 is slidably inserted in a radiation hole 21 formed in the upper spindle 14. Further, arc-shaped recesses 22 are formed on the radial inner end surfaces of these fixed blocks 20, respectively. Then, the inner ends of the fixed blocks 20 in the radial direction are projected and retracted in the conical hole 16 by the operation of the cylinder 18.

Reference numeral 27 denotes an upper rim flange, and the upper rim flange 27 has a protruding portion 28 protruding upward from the upper surface of the central portion.
have. The projecting portion 28 has a substantially truncated cone shape which is complementary to the conical hole 16, and a fixing groove 29 extending in the circumferential direction is formed on the outer periphery of the upper end portion of the projecting portion 28. In addition, a conical trapezoidal fitting hole 30 tapering upward is formed on the lower surface of the central portion of the upper rim flange 27, and the bottom surface of the fitting hole 30 and the upper end surface of the projecting portion 28 are upper parts. The air passages 31 formed in the rim flange 27 communicate with each other. Reference numeral 32 is a substantially ring-shaped upper rim, and the upper rim 32 is fitted and fixed to the outside of the upper rim flange 27. And this upper rim 32
One bead portion B of the tire T on which the uniformity test is performed by the uniformity machine 11 is seated on the seat. The above-mentioned upper rim flange 27 and upper rim 32 together constitute an upper rim 33 which is detachably attached to the upper spindle 14. The upper rim 33 is attached to the upper spindle 14 by inserting the protrusion 28 into the conical hole 16 and then operating the cylinder 18 to insert the radially inner end of the fixed block 20 into the fixed groove 29. On the other hand, the cylinder 18 is actuated, and the radial inner end of the fixed block 20 is pulled out from the fixed groove 29 so as to be separated from the upper spindle 14. The cylinder 16 and the fixed block 20 described above collectively constitute a connecting mechanism 34 that detachably connects the upper rim 33 to the upper spindle 14.

1 and 2, a cylinder 36 extending in the vertical direction is attached to the frame 12 immediately below the upper rim 33, and an outer cylinder 38 is fixed to a tip end (upper end) of a piston rod 37 of the cylinder 36. Has been done. A spindle shaft 39 extending in the vertical direction is housed in the outer cylinder 38, and the spindle shaft 39 is rotatably supported by the outer cylinder 39 via a bearing 40. A cylinder chamber 41 having an open upper end is formed on the spindle shaft 39, and the upper end opening of the cylinder chamber 41 is closed by a support block 42 fixed to the upper end of the spindle shaft 39. A plurality of claw grooves 43 are formed in the support block 42, and a lock claw 44 extending substantially vertically is inserted in each claw groove 43. The lock claws 44 are swingably supported by the support block 42 via the pins 45 at the central portion in the longitudinal direction. The spindle shaft 39 and the support block 42 described above collectively constitute a lower spindle 46 which is coaxial with the upper spindle 14 and makes a pair. A piston 47 is slidably accommodated in the cylinder chamber 41, and a rod 48 is attached to the piston 47.
The rod 48 extends upward until it is located between the lock claws 44. A cam 49 in the shape of a truncated cone that tapers upward is fixed to the upper end of the rod 48.
The outer peripheral surface of 49 is in contact with the inner side surfaces of the lock claw 44 that face each other. Reference numeral 50 is a claw formed on the upper end of each lock claw 44, and these claws 50 project outward in the radial direction. Reference numeral 51 is a claw portion formed at the lower end of each lock claw 44, and these claw portions 51 project inward in the radial direction and an insertion hole 52 formed in the outer periphery of the rod 48.
Has been inserted into. As a result, when the rod 48 moves upward together with the cam 49, each locking claw 44 is pushed by the cam 49 and swings about the pin 45 so that the upper ends thereof are separated from each other, while when the rod 48 moves downward, The claws 51 are pushed down by the insertion holes 52, and the lock claws 44 swing so that their upper ends approach each other. 53 and 54 are air supply / discharge passages formed in the spindle shaft 39, and these supply / discharge passages 53, 54 are connected to two cylinder chambers 41 partitioned by a piston 47, respectively. As a result, these supply and discharge passages 5
When air is supplied to and discharged from the cylinder chamber 41 from the cylinders 3, 54, the piston 47 moves up and down together with the rod 48.

Reference numeral 57 denotes a lower rim flange, and the lower rim flange 57 has a fitting protrusion 58 protruding upward from the upper surface of the central portion thereof, and the fitting protrusion 58 is in a complementary relationship with the fitting hole 30. It has a substantially truncated cone shape. Also, this fitting protrusion
An air passage 59 is formed in the air passage 58. One end of the air passage 59 opens to the upper end surface of the fitting protrusion 58, and the other end opens to the outer periphery of the base end of the fitting protrusion 58. , 31
The air supplied through the above is introduced into the tire T. A coupling recess 60 is formed on the lower surface of the central portion of the lower rim flange 57, and an opening (lower end) of the coupling recess 60 is formed with a ring-shaped locking portion 61 that projects inward in the radial direction. .. Reference numeral 62 is a substantially ring-shaped lower rim, and this lower rim 62 is fitted and fixed to the outside of the lower rim flange 57. The other bead portion B of the tire T is seated on the lower rim 62. The lower rim flange 57 and the lower rim 62 described above are the lower spindle 46 as a whole.
A lower rim 63 that is detachably attached to the. Then, in the lower rim 63, after inserting the upper end portion of the lock claw 44 into the coupling recess 60, the piston 47, the rod 48, and the cam 49 are integrally lifted to separate the lock claws 44 from their upper ends. By swinging the claw portion 50 into contact with the locking portion 61 so that it is connected to the lower spindle 46, while the piston
47, the rod 48 is integrally lowered to swing the lock claw 44 so that the upper ends thereof approach each other, and the claw portion 50 is disengaged from the locking portion 61, thereby disengaging from the lower spindle 46. The lock claw 44, the piston 47, the rod 48, and the cam 49 described above collectively constitute a connecting mechanism 64 that detachably connects the lower rim 63 to the lower spindle 46. The lower rim 62
A ring-shaped engagement portion 65 is formed on the lower surface of the, and the outer peripheral surface in the radial direction of the engagement portion 65 is formed by a part of a conical surface that tapers downward.

1, 4 and 5, a horizontal conveyor 69 extending in the front-rear direction is installed on the frame 12, and the conveyor 69 is arranged between the lower limit and the upper limit of the lower rim 63. There is. The conveyor 69 has a pair of side plates 70 fixed to the frame 12, and front and rear end portions of the side plates 70 have both ends of a plurality of rollers 71 extending in the left-right direction and separated in the front-rear direction. Is rotatably supported. Further, brackets 72 are attached to the central portions of the side plates 70, and both ends of a plurality of rollers 73 that are parallel to the rollers 71 and are separated from each other in the front-back direction are rotated between the brackets 72 and the side plate 70. Supported as possible. As a result, these brackets 72
A space 74 without rollers is formed between these spaces.
The lower rim 63 moves up and down while passing through 74. A sprocket 75 is attached to the rollers 71 and 73 described above, and a chain 76 driven and driven by a motor (not shown) is stretched around these sprockets 75. As a result, when the motor operates, the rollers 71 and 73 rotate in the same direction at the same speed, and carry in and out the tire T described above or a pallet described below. Reference numeral 77 is a horizontal guide plate attached to each side plate 70 via a bracket 78 and extending in the front-rear direction.
The 77 is located directly above the rollers 71 and 73, and the rear end of the 77 inclines toward the rear toward the end.

Numeral 80 is a rectangular plate-shaped pallet, and a hole 81 penetrating in the vertical direction is formed in the center of the pallet 80, and the inner peripheral surface of this hole 81 is a conical surface that widens toward the top. Consists of a part of. And this pallet 80
When the lower rim 63 is placed in the hole 81, the engaging portion 65 of the lower rim 63 is inserted into the hole 81, and the inner peripheral surface of the hole 81 and the outer peripheral surface of the engaging portion 65 are in surface contact with each other. Further, the pallet 80 has a wide slit 83 extending from the hole 81 toward one side surface (front side surface).
The slit 83 prevents interference with the lower spindle 46 in the raised state, and allows the pallet 80 to be carried in and out by the conveyor 69. Also, the pallet 80
Guide rollers 85 that rotate around a vertical axis are rotatably supported on both left and right side surfaces of the pallet 80 via a bracket 84, and the pallet 80 has a conveyor 69 and an elevating path of the lower rim 63. When the pallet 80 is carried into the intersecting position K where it intersects, the pallets 80 are corrected by rolling contact with the guide plates 77, respectively. A cylinder 86 extending in the vertical direction is attached to the frame 12 near the front end of the conveyor 69, and a stopper pin protruding and retracted above the upper surface of the conveyor 69 by the operation of the cylinder 86 is attached to the tip of the piston rod of the cylinder 86. 87 is fixed.
When the pallet 80 is carried forward while the stopper pin 87 projects above the upper surface of the conveyor 69, the locking piece 88 fixed to one side end (front end) of the pallet 80 is released. Since it comes into contact with the stopper pin 87, the pallet 80 stops its movement and reaches the intersection position K.

In FIG. 1, reference numeral 90 denotes a feeder installed behind the tire uniformity machine 11, and the feeder 90 is provided at the same height as the frame 91 and the upper end of the frame 91 and the conveyor 69. Roller conveyor 92
With the roller conveyor 92, the tire T,
The pallet 80 is supplied to or discharged from the conveyor 69.

Next, the operation of the embodiment of the present invention will be described. When the uniformity test of the tire T is performed by the above-mentioned uniformity machine 11, the tire T to be tested is supplied from the roller conveyor 92 onto the conveyor 69. At this time, the piston rod 37 of the cylinder 36 is retracted to the stroke end, and the lower rim 63 stands by at the lower limit. Next, the conveyor 69 is operated to operate the rollers 71,
The tire T is carried into the intersection position K by rotating 73. Next, the piston rod 37 of the cylinder 36 is projected to raise the lower rim 63. At the time of this ascent, the lower rim 63 is fitted to the other bead portion B of the tire T waiting at the intersection position K and supports from below. And in this state the lower rim 63
When the tire T is further raised, the tire T is lifted while being held by the lower rim 63 until one bead portion B is fitted to the upper rim 33. Then, one bead B is seated on the upper rim 32 and the other bead B is seated on the lower rim 62,
In addition, the fitting protrusion 58 of the lower rim 63 is fitted into the fitting hole 30 of the upper rim 33.
When it is inserted into the cylinder, the operation of the cylinder 36 stops. next,
The air from the air source passes through the air passages 17, 31, and 59 to the tire T.
The inside is filled to a predetermined pressure. Then, when the upper spindle 14 is rotated by the motor 15, the tire T and the lower spindle 46 also rotate together with the upper spindle 14. At this time, the tire T is subjected to a predetermined uniformity test. When the uniformity test is completed, the air in the tire T is exhausted, the piston rod 37 of the cylinder 36 is retracted, and the lower rim 63 and the tire T are integrally lowered. During this descent, the tire T comes into contact with the rollers 71 and 73 of the conveyor 69 and transfers from the lower rim 63 onto the conveyor 69. After that, this tire T is on the conveyor
It is carried out on the roller conveyor 92 by the operation of 69, and then transferred to a hand cart (not shown). on the other hand,
The lower rim 63 descends to the lower limit as it is, and waits until the next test at the lower limit. The above is one of the uniformity tests
The cycle is repeated after that, and the tires T are tested one after another.

During such a test, if the type of the tire T to be tested is changed, the upper and lower rims 33 and 63 must be replaced in accordance with the change. In this case, first, the cylinder 36 is operated to cause the piston rod 37 to project, and the lower spindle 46 and the lower rim 63 waiting at the lower limit are integrally moved upward. At the time of this rising, the lower rim 63 passes through the space 74, so that the lower rim 63 and the rollers 71, 73 of the conveyor 69 do not interfere with each other. Then, as shown in FIG. 2, this rising causes the lower rim 63 connected to the lower spindle 46 to come into contact with the upper rim 33 from below, and the fitting protrusion 58 fits into the fitting hole 30. Stops when face-to-face contact.

Next, the empty pallet 80 is loaded onto the roller conveyor 92.
After supplying the above, the roller conveyor 92 is operated to feed the pallet 80 onto the conveyor 69. The pallet 80 thus supplied onto the conveyor 69 is a roller of the conveyor 69.
When 71 and 73 rotate synchronously, they are conveyed forward. During this conveyance, the guide roller 85 of the pallet 80 rolls and contacts the guide plate 77, so that the pallet 80 is corrected to a predetermined posture. Also, during this transfer, the conveyor 69
Since the piston rod 37 passing through the slit passes through the slit 83 and the hole 81, interference between the pallet 80 and the piston rod 37 is avoided. Further, at this time, the cylinder 86 is operated to cause the stopper pin 87 to project above the upper surface of the conveyor 69. As a result, the loading of the pallet 80 is stopped when the locking piece 88 contacts the stopper pin 87, but at this time,
The pallet 80 reaches the intersection position K. At this time, the piston rod 19 of the cylinder 18 is retracted, and the fixed block 20 is pulled out from the fixed groove 29. As a result, the upper rim 33 is separated from the upper spindle 14 and the lower rim 33
Placed on 63. Simultaneously with the operation of the cylinder 18, air is supplied to the upper cylinder chamber 41 through the supply / discharge passage 54 to integrally lower the piston 47 and the rod 48.
As a result, the claw portion 51 is pushed down by the insertion hole 52,
The lock claws 44 swing so that their upper ends approach each other. As a result, the claw portion 50 disengages from the locking portion 61 of the lower rim 63, and the lower rim 63 disengages from the lower spindle 46.

Next, by retracting the piston rod 37 of the cylinder 36 and moving the lower spindle 46 downward, the upper and lower rims 33, 63 are integrally lowered. During this descent, since the lower rim 63 comes into contact with the pallet 80 and is supported from below, both the upper and lower rims 33 and 63 are separated from the lower spindle 46 and transferred onto the empty pallet 80. It At this time, the lower rim 63 is placed in the hole 81 of the pallet 80.
Since the engaging portion 65 of the above is inserted and the inner peripheral surface of the hole 81 and the outer peripheral surface of the engaging portion 65 are in surface contact with each other, the upper and lower rims 33, 63.
Is placed on the pallet 80 in a stable state. On the other hand, above
The lower spindle 46 from which the lower rims 33 and 63 have been removed is lowered to the lower limit position by the operation of the cylinder 36.

Next, the conveyor 69 is operated to carry out the pallet 80 on which the upper and lower rims 33 and 63 have been transferred from the intersection position K onto the roller conveyor 92, and then transfer it to the hand cart. Next, a pallet 80 having new upper and lower rims 33, 63 corresponding to the tire T to be tested next is supplied to the roller conveyor 92 by the hand cart, and then the roller conveyor 92 conveys the pallet 80. Supply on 69. After that, the pallet 80 and the upper and lower rims 33 and 63 are carried into the intersection position K by the operation of the conveyor 69.

Next, the lower spindle 46 is moved upward by the operation of the cylinder 36, and the upper and lower rims 33 and 63 placed on the pallet 80 are moved from the pallet 80 to the lower spindle 46 during the movement. Reprinted on 46.

The lower spindle 46 is then raised until the upper rim 33 abuts the upper spindle 14 and the protrusion 28 is inserted into the conical hole 16. Then, the cylinder 18 is operated to insert the fixing block 20 into the fixing groove 29, and the upper rim 33 and the upper spindle 14 are connected to each other. At the same time,
Air is supplied to the lower cylinder chamber 41 through the supply / discharge passage 53, and the piston 47, the rod 48, and the cam 49 are integrally raised. As a result, the lock claws 44 swing so that the upper ends thereof are separated from each other, and the claw portions 50 abut and lock with the locking portions 61, and the lower rim 63.
And the lower spindle 46 are connected to each other. At this time,
The conveyor 69 is operated to carry out the emptied pallet 80 from the intersection position K to the roller conveyor 92. At this time as well, since the piston rod 37 passes through the hole 81 and the slit 83,
No problem. At this time, the cylinder 86 is operated to retract the stopper pin 87 below the conveyor 69. On the other hand, the empty pallet 80 carried out on the roller conveyor 92 is transferred to the hand cart and conveyed to the stock position. next,
Lower the rim 63 by retracting the piston rod 37 of the cylinder 36.
Is lowered to the lower limit, and in this state, the test tire T is waited until it is loaded.

As described above, when exchanging the upper and lower rims 33 and 63, the distance that the lower spindle 46 moves is at least a short distance between the conveyor 69 and the upper spindle 14 (actually, this short distance). , The distance from the conveyor 69 to the lower limit of the lower spindle 46 plus a certain distance)
The work efficiency is improved, the device is small, the manufacturing cost is low, and the maintenance is easy. In addition, the conveyor 69 that is always installed in the uniformity machine 11
Since the pallet 80 is loaded and unloaded using
No special assembly worktable is required, the structure is simple and the manufacturing cost is low.

In the above embodiment, the upper rim is
At the same time as the 33 is disengaged from the upper spindle 14, the lower rim 63 is disengaged from the lower spindle 46.
In the present invention, this lower rim 63 is attached to the lower spindle.
The timing of removing from 46 may be any time from the start of the replacement work of the upper and lower rims 33 and 63 to the transfer of the upper and lower rims 33 and 63 to the pallet 80. ..

[0023]

As described above, according to the present invention, the rim can be replaced with high efficiency, the entire device can be downsized and the manufacturing cost can be reduced, and the structure can be simplified. Maintenance can be done easily.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a front cross-sectional view near the upper and lower rims.

3 is a cross-sectional view taken along the line II of FIG.

FIG. 4 is a plan view of a conveyor.

5 is a partially cutaway view taken along the line II-II of FIG. 4. FIG.

[Explanation of symbols]

 11 ... Tire uniformity machine 14 ... Upper spindle 33 ... Upper rim 46 ... Lower spindle 63 ... Lower rim 69 ... Conveyor 80 ... Pallet T ... Tire K ... Crossing position

Claims (1)

[Claims] 1. A process of moving a lower spindle of a tire uniformity machine upward to raise a lower rim until it comes into contact with an upper rim from below, and an empty pallet is moved by a conveyor that conveys a tire for which a uniformity test is carried out. , The step of removing the upper rim from the upper spindle while carrying in to the intersecting position where the lower rim lifting path and the conveyor intersect, and moving the lower spindle downward, the upper and lower rims are integrated. By lowering the upper rim and the lower rim separated from the lower spindle during the lowering, and transferring the lower rim from the lower spindle to an empty pallet, and the operation of the conveyor,
Carrying out the pallet with the upper and lower rims transferred from the intersecting position, loading a new pallet with the upper and lower rims to the intersecting position, and moving the lower spindle upward. , A step of transferring the upper and lower rims from the pallet to the lower spindle during the movement,
The lower spindle is further moved until the upper rim abuts the upper spindle to connect the upper rim and the upper spindle to each other, and the lower rim is connected to the lower spindle, and the empty pallet is crossed by the operation of the conveyor. Rim replacement method in a tire uniformity machine characterized by including the step of carrying out from the rim.