JPS63150643A - Rim transfer device for automatic rim replacement type tire uniformity machine - Google Patents

Abstract

PURPOSE:To store many pairs of upper and lower rims compactly and to easily and speedily supply them by fitting and supporting lower spindle assemblies in fitting holes bored in the periphery of a transfer table at equal circumference division position. CONSTITUTION:The four fitting holes C1-C4 (C2 and C4 not shown in a figure) are provided at the equal circumference division positions of the periphery of the transfer table 15 and the lower spindle assemblies B1-B4 (B2 and B4 not shown in the figure) are fitted and supported in the respective fitting holes C1-C4 in a vertical elevation state. The assembly B1 equipped with an upper and a lower rim of target size is stopped at a specific position and then a tire is set on the lower rim 2 of the assembly B1. Then the assembly B1 is elevated to engage the tire with the upper rim 1, so that the upper and lower rims 1 and 2 are set one over the other. Thus, the fitting projection part of the lower rim is fitted in the fitting holes 12 of a rim fitting flange 11 by the elevation to connect upper and lower spindles 6 and 10 successively with each other, thereby performing necessary uniformity operation for the tire.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention fully automatically replaces upper and lower rims when tire size is changed, and also prepares upper and lower rim assemblies for each size in advance. A tire uniformity machine of the type that can be prepared and selectively supplied according to size changes is particularly capable of compactly accommodating a large number of upper and lower rim assemblies, and can quickly and easily supply them, improving workability and improving workability. The present invention relates to a rim transfer device that improves productivity.

(Prior art) The tire uniformity machine used in the finish inspection process in the manufacture of various tires is, needless to say, well-known. The necessary uniformity inspection is performed by supplying pressurized air, applying a load to the tire, and rotating the tire. However, when changing the size of the tire to be tested, it is necessary to immediately change the upper and lower rims. A method for automating this rim replacement/removal work in order to save labor, and further preparing in advance a plurality of upper and lower rim assemblies of different sizes, and selectively and automatically supplying rim assemblies of the corresponding size. is also known, and one of the means is
9 to 9 will be explained. In FIG. 7, the upper spindle assembly A is rotatably held in the holder 21 via a bearing 8.9 and located at the center, and includes an upper spindle 6 with a rotary pulley 7; The rim attachment flange 11 is fixed to the lower end, and the locking device 26 is installed on the upper part of the flange 11 and locks and releases the upper rim attached to the flange 11 in one click.
The rim mounting flange 11 has a taber cone-shaped coupling fitting hole 12 provided at the center of the rim mounting flange 11. On the other hand, in the lower spindle assembly B, two sets of assemblies Bl and B2 are arranged in series on a slide table 15 as shown in the figure, and both assemblies B1 and B2 are arranged in series on a slide table 15.
□ B2 moves along with the slide table 15, which moves forward and backward along the rails 17 of the pedestal 16 by the forward and backward cylinder 18, and as a result of its forward and backward movement, either the lower spindle assembly B or B2 moves toward the upper spindle assembly. It is possible to switch to a position concentric with A, and each assembly B+, E3
z are fitted to the table 15 so as to be able to move up and down vertically, and the structure of the assembly B is such that the lower spindle 10 is rotatably held at the center position via a bearing 13, and the spindle 10 The upper spindle 6 is fitted into the tapered cone-shaped fitting hole 12 of the rim mounting flange 11 of the upper spindle assembly A described above on the center upper surface of the upper spindle 6.
A fitting protrusion 10a of the same shape that is automatically connected in series is formed in a protruding shape, and a lower rim 2 is attached to the spindle 10 surrounding this, and a lower rim 5 is attached to the lower rim 5 of the assembly B2. Furthermore, upper rims 1.4 are removably mounted on the upper surfaces of these lower rims 2 and 5, respectively, that is, upper and lower rims 1 of different sizes are respectively mounted.
．． 2 sets, 4.5 sets of upper and lower rims each lower spindle assembly B
1. It is assembled in B2. FIG. 7 shows a state in which the lower spindle assembly B is set concentrically with the upper spindle assembly A, and from this state the lower spindle assembly B and the upper spindle assembly A are moved by the lifting cylinder 19.
By raising it toward , as shown in Figure 8,
The upper rim 1 in the assembly B1 is fitted into the rim mounting flange 11 at the lower end of the upper spindle 6, and the locking device 26 engages the upper rim 1 and the rim mounting flange 1.
1 are locked together. After the installation of the upper rim 1 is completed, the assembly B1 to which the lower rim 2 is fixed is lowered to the original position by the lifting cylinder 19, and placed on the lower rim 2 of the assembly B1 in the lowered position (not shown). However, the tire T carried into the Uniformity machine is set, and then the assembled assembly B1 of the tire T is raised again, and the tire T is engaged with the upper rim 1 side, and together with the upper and lower rims 1 and 2. As a result of this rising, the fitting protrusion 10a of the lower rim 2 is fitted into the fitting hole 12 of the rim mounting flange 11, and the upper and lower spindles 6.10 are connected in series. Therefore, the same tire T
It becomes possible to perform the necessary uniformity work on the In this case, the lower rims 1 and 2 are, of course, of a rim size that matches the size of the tire T shown in the figure, but if the size of the tire T is different, the upper and lower rims 1 and 2 will also be adjusted accordingly. It is necessary to replace it with one that corresponds to the changed size.

For this reason, in the illustrated prior art, two sets of lower spindle assemblies B, B2 are installed in series on the slide table 15, and through the linear movement of the table 15, the assemblies B, B2 are
, B2 can be switched and moved concentrically with the upper spindle assembly A, so suppose upper and lower rims 4 and 5 of a rim size that matches the size of the next tire T are prepared in the assembly B2. After the assembly B1 finishes inspecting the group of tires T, the locking surface 26 is opened.

The assembly B1 having the upper and lower rims 1 and 2 is lowered via the lifting cylinder 19 and stored in the original position on the slide table 15.
8, the slide table 15 is moved backward along the rail 17 toward the right in FIG. 8, and as shown in FIG. It is possible to switch and set the assembly B2 to a position concentric with the solid body A, and then operate the same assembly B2 in the same way as assembly B to perform uniformity work on a tire T of a different size. This makes it possible to automatically replace the rims, to have multiple sets of different sizes, and to use different lower rim sets.

(Problems to be Solved by the Invention) The above-mentioned conventional technology has the following problems. That is, a slide table 15 disposed below the upper spindle assembly, and a plurality of lower spindle assemblies installed in series on the table 15 and each having upper and lower rim sets of different sizes are used as a rim transfer means. be. As is well known, in the Tire Ni 5 Formity machine, the upper spindle assembly is installed with a rotating device above the center of the machine frame, which is a substantially rectangular frame, and the conveyor for the tires to be tested is installed from one side at the bottom of the frame. It is installed penetratingly across the other side, and a lower super spindle assembly is installed within the same conveyor so that it can be vertically raised and lowered, and a loading device for applying other loads is installed in the middle, so there is plenty of space. has had narrow limitations from the beginning. For this reason, in the prior art type in which a plurality of lower spindle assemblies B are arranged in series like B, B2 on the transfer table 15 that moves linearly forward and backward by the piston rod of the forward and backward cylinder 18, uniformity cannot be achieved. Unless the fuselage is expanded, the installation of two sets of lower spindle assemblies B is the limit, and in the end it is impossible to accommodate upper and lower rim sets with a wide variety of rim sizes corresponding to various tire sizes. Linear movement by pushing and pulling the piston rod of the advancing/retracting cylinder 18 requires a long time, such as 30 to 60 minutes, to change the rim to use a rim size other than the maximum of two sets. This results in a major disadvantage in terms of workability and productivity.

(Means for Solving the Problems) The present invention improves the rim transfer means in such an automatic rim change type tire uniformity machine, and reduces the number of required rim sets stored without the need to expand the installation space in the conventional uniformity machine. Specifically, the upper rim is automatically engaged with the rotatable upper spindle held in the tire uniformity machine and located at its center. An upper spindle assembly having a releasably locking locking device and a rotatable lower spindle, also held in the machine so as to be raised and lowered and centrally located therein, are concentric with and automatically connected to the upper spindle. and a lower spindle assembly having a lower rim on which the upper rim can be placed, in an automatic rim changeable tire uniformity machine, in which a plurality of sets of the lower spindle assemblies are rotatable within the machine. A transfer table is arranged and held on the circumference side of the transfer table at equal positions on the circumference and can be raised and lowered vertically. The same number of regulating elements are arranged at equal positions on the circumference, and a common positioning restraint element that can be engaged with and detached from each of the regulating elements is arranged outside the table.

(Function) According to the above-mentioned technical means of the present invention, as shown in FIGS. 1 and 2, the disk-shaped transfer table 15 is mounted on a fixed mount in the tire uniformity machine below the upper spindle assembly A. 16, it is installed so as to be rotatable and stopperable, and a plurality of ([1i1 (four holes are shown in the figure) shown] fitting holes C1 to C4 are installed around the table so as to be able to stop rotating. Open each insertion hole C, -wc
4, four lower spindle assemblies B, ie, assemblies 81 to B4, as previously illustrated in FIGS. 7 to 9, are fitted so as to be vertically movable. Further, an elevating cylinder 19 for vertically elevating the lower spindle assemblies B1 to B4 toward the upper spindle assembly A is installed below the table 15 and concentrically with the upper spindle assembly A. By assembling and attaching the upper and lower rims of different sizes to the lower spindle 10 of the upper and lower spindle assemblies B1 to B4, respectively, by rotating and stopping the transfer table 15, these lower spindle assemblies B1 to B4 can be connected to the upper spindle assembly. By stopping at a position concentric with the solid body A and the lifting cylinder 19, four assemblies B1 to B4 having upper and lower rim sets of different sizes in the illustrated example can be selectively supplied in response to a change in tire size. Therefore, it becomes possible to perform replacement and removal. At this time, in the present invention, in order to reliably stop the lower spindle assembly B, -84 of tf(!a) at a fixed position, the assemblies 81 to 84 are placed on the circumferential side of the transfer table 15, as illustrated in FIG. The same number of positioning regulators 23 to 26 as B4 are arranged at equally spaced positions on the circumference, and positioning restrainers 22 that can be engaged with and detached from each of these regulators 23 to 26 are connected to the regulators by, for example, the actuating cylinder 20. 23
By installing it outside the table 15 at a predetermined position so as to be able to advance and retreat toward the upper spindle assembly A and the lifting cylinder 19, for example, in FIG. When the assembly B1 is stopped at a concentric position, the regulator 23 is
By advancing the restrainer 22 and securing and restraining it, it is possible to stop the assembly B in the correct concentric position, and this allows for more variety than the conventional slide table advance/retract method. This allows for quick size changes, speeds up the rim replacement/removal work, and improves work efficiency and productivity.

(Example) A suitable example of the rim transfer device according to the present invention is as follows:
This will be explained with reference to FIGS. 1 to 6.

In FIG. 1, an upper spindle assembly A installed on the upper part of a body frame 32 in a tire uniformity machine via a holder 33 has bearings 8,
The upper spindle 6 is rotatably held by the upper spindle 9 and equipped with a rotation pulley 7, the tapered cone-shaped fitting hole 12 formed at the lower end of the spindle 6, and the upper rim can be automatically locked and released with one touch. However, in the embodiment, the locking device 34 is provided to
Unlike the locking device 26 previously shown in FIG.
a tapered cone-shaped fitting protrusion 1 which is attached and protrudes from the center upper surface of the rim attachment flange 11 fixed to the upper rim 1 by the same chuck 36, and which is fitted through the fitting hole 12;
The connector 37 attached to 1a can be connected and disconnected with one touch (see Fig. 6).

On the other hand, the lower spindle assembly B, as shown in FIG. It consists of a tapered cone-shaped fitting protrusion IalOa that is fitted through the fitting protrusion 11a of No. 11, and a lower rim 2 that surrounds the protrusion 10a and is fixed to the upper surface of the lower spindle 10. 10a and the fitting protrusion 11a of the rim mounting flange 11,
The upper rim 1 integrated with the flange 11 can be placed on the lower rim 2 in an overlapping manner, and in the case of the embodiment,
Four lower spindle assemblies B are prepared as B1 to B4, and each upper and lower rim set including upper and lower rims 1.2 in each assembly B, to B4 has a rim size of It is assumed that the size is different.

At a position concentric with the center of the upper spindle assembly A described above, a lifting cylinder 19 for the lower spindle assembly B is disposed at the lower part of the frame 32, and the head 19b of the piston rod 19a of the cylinder 19 is disposed at the lower part of the frame 32. is removably fitted to the lower end of the assembly B to move the assembly B up and down. A transfer table 15 is rotatably disposed at an intermediate position between the cylinder 19 and a pedestal 16, and fitting holes C1 are formed at four positions equally distributed around the circumference of the table 150.
-C4, each of the assemblies B1 to B4 are arranged in a row so that they can be vertically raised and lowered, and in FIG.
and C3 are shown with lower spindle assemblies B1 and B3 fitted and supported.

Lower spindle assemblies B, ~B4 are defined, each having upper and lower rims of each size fitted into the aforementioned transfer table 15 and the upper and lower rims of each size fitted into the fitting holes c, -c4 of 4 (r!J) at equal positions on the same table 15. The details of the structural example for stopping the rotation at the position are as illustrated in FIGS. , its central axis 39
is rotatably supported via a bearing 2L 22, and a timing pulley 30 attached to a central shaft 39 as shown in FIG.
The timing boot 1J31 of the drive motor 18 and the timing belt 29 are connected to each other, so that rotation can be stopped.

Around the table 15, there are 41 [1! I
The fitting holes C1 to C4 are arranged in a row, and the lower spindle assemblies 81 to B4 are respectively fitted into the fitting holes C5 to C4 so as to be vertically movable.
, that is, the center of each of the fitting holes C1 to C2, is in a positional relationship such that it passes concentrically with the upper spindle assembly A and the lifting cylinder 19 as the table rotates. In the vicinity of each assembly B, ~B
Positioning regulators 23 for assembly B1, regulators 24 for assembly B4, regulators 25 for assembly B3, and regulators 25 for assembly B3 at adjacent intermediate positions, that is, positions equally divided on the circumference of assembly B1. The same number of regulators 26 are arranged for each regulator 23 to 2.
Each of the rollers 6 has a substantially isosceles triangular shape with tapered sides, and a roller 40 is attached to the tip thereof.

A common positioning restraint 22 that is removable and engageable with each of these regulators 23 to 26 extends outward from the table 15 toward the center of the table 15 and along the radial direction via a cylinder 20 for advancing and retracting. The restrainer 22 is arranged so that it can move forward and backward.
A guide notch 22a having a substantially isosceles triangular shape having tapered side sides compatible with the regulators 23 to 26 and an engaging portion 22b of the roller 40 are formed at the center of the bottom of the notch 22a. Also, on the outside of the table 15 across the restrainer 22, a stop limit switch 28 is installed at the front position in the rotational direction of the table 15 (counterclockwise as shown by the arrow in the figure), and a selection limit switch 27 is installed at the rear position. By arranging each of them, the assemblies 81 to B4 provided with the upper and lower rims of the target size can be stopped at a predetermined position in the following manner. That is, although not shown, assembly B is equipped with upper and lower rims that match the target tire to be tested by switching on the operation panel! By specifying one of ~B4, for example, if it is the lower spindle assembly B, the switch-in causes the table 15 to be
is rotated counterclockwise via the drive motor 18, timing pulley 31, timing belt 29, and timing pulley 30, and the assembly B is the selection limit switch 2.
7, the motor electric circuit is turned off and the table 15 continues to rotate slightly due to inertia only, but the assembly B,
Therefore, by actuating the stop limit switch 28 using a striker 41 attached around the table 15 in the vicinity of the assembly B, the brake of the drive motor 18 is activated and the table 15 is stopped. When the table 15 is stopped, the center of the assembly B1 is not at a concentric position with the centers of the upper spindle assembly A and the lifting cylinder 19, but is stopped at a position slightly deviated from the concentric center. By releasing the brake of the motor 18 and advancing the positioning restrainer 22 along the radial direction toward the center of the table by the advance/retreat cylinder 20, the restrainer 22 and the restrainer for the assembly B1 located in the vicinity are moved. 2
3, the roller 40 at the tip is forcibly guided toward the center along one of the tapered side surfaces of the guide notch 22a of the restrainer 22, and the roller 40 engages with the engaging portion 22b at the center of the guide notch 22a. By fitting, the assembly B1 is correctly regulated and restrained in a predetermined position, that is, concentric with the upper spindle assembly A and the lifting cylinder 19, and correction of center deviation is obtained. After that, assembly B, which has stopped at a fixed position, is raised, its upper rim 1 is automatically attached to assembly A, assembly B is once lowered, and the tire to be tested is placed on the lower rim 2 of assembly Bl. Attachment and retention of the same tire to the upper and lower rims 1.2 by raising both of the assembly B1 and unifying both rims 1.2, and the upper and lower spindle shafts 6. IO
The same integration as before can be achieved. At this time, due to the combination of the regulator 23 and the restrainer 22, there is no fear of center deviation during the uniformity test. Selective supply of other lower spindle assemblies 82 to B4 can be similarly achieved by rotating the table 15, thus making it possible to replace and remove upper and lower rims of four sizes.

(Effects of the Invention) According to the rim transfer device of the present invention, compared to the conventional system using the transfer table 15 that advances and retreats in a straight line and using a maximum of two sets of lower spindle assemblies 81 to B2, the rim transfer device has a circular shape. By employing the transfer table 15, positioning regulators 23 to 26, and fixed angle rotation stopping means using one positioning restrainer 22 that can be bonded with these, there is no need to expand the installation space inside the tire uniformity machine. As shown in the example of doubling the minimum tf[lil, each assembly B made up of rim sets of various rim sizes can be stored in a compact space, and these assemblies B can be assembled under the shortest movement stroke. It can be selectively supplied to the predetermined replacement attachment/detachment position, and can cover most current rim sizes, and the rim replacement work does not require the traditional 30 to 60 minute long process and manual assistance. With full automation, the process can be completed in as little as 30 seconds, dramatically improving workability and productivity. As a result, it is possible to improve the rim transfer means, which is the biggest problem with conventional automatic rim changing tire uniformity machines, and to expand its automatic changing function.
The benefits are quite obvious when you consider that rims are changed several times a day.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of an embodiment of the present invention, FIG. 2 is a plan view of the main parts of the transfer table, and FIG. 3 is a diagram of FIG.
1 line, Figure 4 is Figure 3 line u-n, Figure 5 is Figure 2 m-m
6 is a side sectional view of the main part of the collet chuck type locking device, and FIGS. 7, 8, and 9 are vertical sectional front views showing the rim exchange operation state by the conventional transfer means. 1.4... Upper rim, 2,5... Lower rim, A...
・Upper spindle assembly, BIB4... Lower spindle assembly, C1 to C4... Assembly fitting hole, 15...
Transfer table, 18... Drive motor, 20.
... Advance/retreat cylinder, 22... Positioning restraint, 2
3-26... Positioning regulator, 6... Upper spindle, 10... Lower spindle, 27... Lock device, T... Tire.

Claims (1)

[Claims] (1) Tire Uniformity An upper spindle assembly is equipped with a locking device that automatically locks and detaches the upper rim on a rotatable upper spindle held in the machine and located at the center thereof, and the upper spindle assembly is equipped with a locking device that automatically locks and detaches the upper rim. a lower spindle assembly, comprising a rotatable lower spindle held in the center thereof, concentric with said upper spindle and capable of self-connection, and comprising a lower rim on which said upper rim can rest; In an automatic rim changeable tire uniformity machine comprising a three-dimensional rim, a plurality of sets of the lower spindle assemblies are arranged at equal circumferential positions on the circumferential side of a transfer table rotatably provided in the machine and vertically movable. The same number of positioning regulators are arranged at equal positions on the circumference to stop each assembly in a position where the lower spindle is concentric with the upper spindle, and the same number of positioning regulators are arranged on the outer side of the table. A rim transfer device for an automatic rim exchange type tire uniformity machine, characterized in that a common positioning restrictor is disposed that is removable from each of the restrictors.