JPH11337452A - Automatic rim exchanging method in tire uniformity machine and rim stock device used in same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic rim exchanging method in a tire uniformity machine capable of efficiently exchanging rims in a short time, effectively installing and removing rims, and performing efficient and safe operation in inexpensive facilities and a rim stock device used for the rim exchanging method. SOLUTION: A rim stock device 8 is provided with a guide roller 11 installed to the upper end of a supporting frame 10 so as to be leveled with the X surface of a transferring line of a tire W to be measured. Rim stock racks 13a and 13b with a supporting jig 12 on which a vertical pair of rims 3a and 3b sandwiching a dummy tire Wa are placed are provided at a midpoint and the lower part of the supporting frame 10. The rim stock racks 13a and 13b are constituted of guide rollers 14a and 14b for movably placing the supporting jig 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically changing a rim in a tire uniformity machine and a rim stock apparatus used for the method for automatically changing a rim. More specifically, the present invention relates to automatically and accurately changing rims having different sizes. The present invention relates to a rim automatic replacement method and a rim stock device used for the rim automatic replacement method.

[0002]

2. Description of the Related Art Conventionally, a tire uniformity machine has been used as a device for measuring the quality and the like of a molded tire. This uniformity machine is composed of a pair of upper and lower tires mounted on a main shaft. The tire is held between the rims and the measurement tire is inflated to measure the uniformity of the tire.

[0003]

There is no problem when repeatedly measuring tires of the same size with a single tire uniformity machine, but when measuring tires of different sizes, a pair of upper and lower tires is required. Rims need to be replaced each time. Conventionally, rim replacement has been performed while hanging using a chain block or the like, but replacement takes a lot of time and effort, and heavy ones have safety issues, and further accuracy There is a problem in that it takes time and skill to perform the work well in order to attach the head to the spindle with good positioning.

In recent years, a fully automatic rim changing device has been proposed, but there has been a problem that the device is large and expensive. SUMMARY OF THE INVENTION It is an object of the present invention to provide a tire uniform which can efficiently perform rim replacement in a short time, can efficiently mount and remove a rim, and can perform efficient safety work with inexpensive equipment. An object of the present invention is to provide a rim automatic replacement method for a mitty machine and a rim stock device used for the rim automatic replacement method.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an automatic rim changing method in which a dummy tire is sandwiched between a pair of upper and lower rims, and the set rim assembly is mounted on a measuring tire. Remove the empty holding jig from the rim stock device and insert it into the lower part of the rim assembly while raising it above the transfer line, separate the pair of upper and lower rims from the main shaft, and then hold the dummy tire The mounted rim assembly is placed on the holding jig, the holding jig is moved again to the rim stock device and stored in the rim stock shelf, and then placed on the rim stock shelf via the holding jig. After taking out the rim assembly that holds the accommodated dummy tire of another size, transport it to the setting position of the uniformity machine, and attach the upper and lower rims to the main shaft of the uniformity machine It is an summarized in that retrieving dummy tire.

The rim stock device used in the rim automatic replacement method according to the present invention is provided with a rim stock device provided with multi-stage rim stock shelves that can be raised and lowered on a transport line of measurement tires connected to a uniformity machine. The gist is that at least two or more sets of holding jigs for mounting a pair of upper and lower rims sandwiching a dummy tire are installed on the rim stock shelf.

As described above, according to the present invention, at least two or more sets of holding jigs for mounting a pair of upper and lower rims sandwiching dummy tires of different sizes are installed on the rim stock device installed near the uniformity machine. By stocking the rim, the rim can be replaced safely and efficiently.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of an entire rim stock device installed near a tire uniformity machine embodying the present invention, and 1 is a pair of upper and lower rims 3a, 3b mounted on vertically movable main shafts 2a, 2b. This uniformity machine 1 is installed in the middle of a roller conveyor 4 which forms a transport line X of the measurement tire W.

The rims 3a, 3b are detachably mounted on the vertically movable main shafts 2a, 2b via spacers 5a, 5b and mounting screw portions 6a, 6b, so that the measuring tire W or the dummy tire Wa can be detached. It is designed to be pinched. As shown in FIG. 1 to FIG. 3, the rim stock device 8
The rim stock device 8 is installed on an elevating device 9 including a cylinder and a link mechanism.

The rim stock device 8 is provided with a guide roller 11 mounted on the upper end of the support frame 10 so as to be uniform with the plane of the transport line X of the measurement tire W. Rim stock shelves 13a and 13b are provided on which a holding jig 12 on which a pair of upper and lower rims 3a and 3b sandwiching a dummy tire Wa is placed. The rim stock shelves 13a and 13b are provided with guide rollers 1 for movably installing the holding jig 12.
4a and 14b.

The holding jig 12 on which the pair of upper and lower rims 3a, 3b sandwiching the dummy tire Wa is placed, as shown in FIGS. 4 to 6, is substantially inside the two support arms 15a, 15b. The C-shaped rim support 16 is fixed,
The support arms 15a, 15b and the rim support 16 are moved upward from the transport line X to the rim assembly 3X.
It is configured such that it can be inserted into the lower portion without interfering with the main shaft 2b.

Reference numeral 17 denotes a centering device for the measurement tire W installed on the side where the measurement tire W is carried in. Next, a method for automatically changing the rim in the tire uniformity machine of the present invention using the rim stock device 8 as described above will be described. First, the dummy tire Wa is sandwiched and set between the pair of upper and lower rims 3a and 3b of the uniformity machine 1, and the set rim assembly 3X is raised above the transport line X of the measurement tire W. .

Next, the empty holding jig 12 is taken out from the rim stock shelf 13a of the rim stock device 8 and inserted into the lower part of the rim assembly 3X, and a pair of upper and lower rims 3a, 3b is provided.
Is separated from the main shafts 2a, 2b via the mounting screw portions 6a, 6b, then removed via the spacers 5a, 5b, and the rim assembly 3X holding the dummy tire Wa is mounted on the holding jig 12. Then, the holding jig 12 is moved again to the position of the rim stock device 8, and the rim stock shelf 13a is moved.
Housed in

Thereafter, the rim stock shelves 13a and 13b are raised above the transport line X via the lifting / lowering device 9, and the rim stock shelves 13b are moved to the position of the transport line X. The rim assembly 3X holding the accommodated dummy tire Wa of another size is taken out and transported to the set position of the uniformity machine 1.

The upper and lower rims 3a, 3b with the dummy tire Wa sandwiched between the main shafts 2a, 2b of the uniformity machine 1 are connected to the spacers 5a, 5b and the mounting screw 6
a, 6b, and then the rim 3
a and 3b are separated from each other to take out the dummy tire Wa, and in this state, the measurement tire W is transported from the loading step to the upper and lower rims 3.
a, 3b to measure the tire uniformity.

As described above, when exchanging the upper and lower rims 3a and 3b having different sizes, the dummy accommodated in the rim stock shelves 13a and 13b of the rim stock device 8 installed near the uniformity machine 1 is used. Tire Wa
By taking out and replacing the rim assembly 3X holding the rim, positioning and assembling work can be easily performed, and when replacing the rim, the replacement work can be performed safely and efficiently.

[0017]

Since the present invention is constructed as described above, the rim can be exchanged efficiently in a short time, and the rim can be positioned, mounted, and removed efficiently, and the cost can be further reduced. There is an effect that efficient safe work can be performed in the equipment.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an entire rim stock device installed near a tire uniformity machine embodying the present invention.

FIG. 2 is a front view of the rim stock device.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a front view of a state in which upper and lower rims holding a dummy tire are placed on a holding jig.

FIG. 5 is a plan view of a holding jig.

FIG. 6 is a front view of FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Uniformity machine 2a, 2b Upper and lower main shaft 3a, 3b Upper and lower pair of rims 4 Roller conveyor 5a, 5b Spacer 6a, 6b Mounting screw portion 8 Rim stock device 9 Lifting device 10 Support frame 11 Guide roller 12
Holding jigs 13a, 13b Rim stock shelves 14a, 14b
Guide rollers 15a, 15b Support arm 16
Rim support 17 Centering device 3X
Rim assembly W Measurement tire Wa Dummy tire X Transport line

Claims (3)

[Claims] 1. A dummy tire is sandwiched between a pair of upper and lower rims and set, and the set rim assembly is lifted from a rim stock device above a transport line of a measurement tire to hold an empty rim. After taking out the jig and inserting it into the lower part of the rim assembly to separate the pair of upper and lower rims from the main shaft, the rim assembly holding the dummy tire is placed on the holding jig, and this holding jig Again to the rim stock device and housed in the rim stock shelf, and then take out the rim assembly holding the other size dummy tires held on the rim stock shelf via the holding jig and remove the rim assembly. After transporting to the set position of the uniformity machine and attaching the upper and lower rims to the spindle of the uniformity machine,
A method for automatically replacing a rim in a tire uniformity machine, comprising removing a dummy tire. 2. A rim stock device having rim stock shelves that can be raised and lowered is provided in a multi-stage manner on a measurement tire transport line connected to a uniformity machine, and dummy tires having different sizes are placed on the rim stock shelves. A rim stocking device for use in a method for automatically changing rims in a tire uniformity machine, wherein at least two or more sets of holding jigs for mounting a pair of upper and lower rims sandwiched therebetween are installed. 3. The rim stocking device used in the method for automatically changing rims in a tire uniformity machine according to claim 2, wherein the multi-step rim stock shelf that can be moved up and down moves up and down at least two or more positions.