JPH05657B2 - - Google Patents

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. Prepare it and set it aside.
This is a type of tire uniformity machine that can be selectively supplied according to size changes, and in particular can accommodate a large number of upper and lower rim sets in a compact manner, and can supply them quickly and easily, improving work efficiency and productivity. The present invention relates to a rim transfer device that allows the rim transfer to be performed.

(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 required uniformity inspection is performed by supplying pressurized air to the inside of the tire, applying a load to the tire, and rotating the tire. However, if the size of the tire to be tested changes, it is necessary to immediately change the upper and lower rims. be. 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. are also known, and one such means will be explained with reference to FIGS. 7 to 9. In FIG. 7, the upper spindle assembly A is rotatably held in a holder 21 via bearings 8 and 9 and is located at the center, and a rotating pulley 7
an upper spindle 6 equipped with an upper spindle 6, a rim attachment flange 11 fixed to the lower end of the spindle 6, and a locking device installed on the upper part of the flange 11 to lock and release the upper rim attached to the flange 11 with one touch. The rim mounting flange 11 is assembled in series with 26 as the main component.
A tapered cone-shaped connection fitting hole 12 is provided at the center of the hole. In contrast, lower spindle assembly B
2 on the slide table 15 as shown in the figure.
A pair of assemblies B ₁ and B ₂ are arranged in series, and both assemblies B ₁ and B ₂ are connected to the pedestal 1 by a cylinder 18 for advancing and retracting.
Along with the slide table 15 moving back and forth along the rail 17 of 6, either the lower spindle assembly _B1 or _B2 can be switched to a position concentric with the upper spindle assembly A by moving back and forth. , each assembly B ₁ and B ₂ are both table 1
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 upper center surface of the spindle 10 is A fitting protrusion 10a of the same shape is formed in a protruding shape and is fitted into the tapered cone-shaped fitting hole 12 of the rim attachment flange 11 in the upper spindle assembly A described above, and is automatically connected to the upper spindle 6 in series. A lower rim 2 for assembly B ₁ and a lower rim 5 for assembly B ₂ are attached to the spindle 10 surrounding the rims, and upper rims 1 and 4 are engaged with the upper surfaces of these lower rims 2 and 5, respectively. They are removably mounted, that is, upper and lower rims 1 and 2 sets and upper and lower rims 4 and 5 sets of different sizes are assembled to each lower spindle assembly B ₁ and B ₂ . FIG. 7 shows a state in which the lower spindle assembly B ₁ is set concentrically with the upper spindle assembly A, and from this state the same assembly B ₁ can be assembled using the lifting cylinder 19. By raising it toward the solid body A, the upper rim 1 of the assembly B ₁ is fitted into the rim mounting flange 11 at the lower end of the upper spindle 6, as shown in FIG. The upper rim 1 and the rim mounting flange 11 are then locked together. When the installation of the upper rim 1 is completed in this way, the assembly B ₁ 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 B ₁ in the lowered position. Although not shown, the tire T carried into the Uniformity machine is set, and then the assembly with the tire T set is shown.
B ₁ is raised again, the tire T is engaged with the upper rim 1 side, and the upper and lower rims 1 and 2 are overlapped with 7, and this raising causes the fitting protrusion 10a of the lower rim 2 to attach to the rim. Fitting hole 12 of flange 11
Since the upper and lower spindles 6 and 10 are connected in series by being fitted into the tire T, it is possible to perform the required uniformity work on the same tire T. 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,
In response to this, it is necessary to replace the upper and lower rims 1 and 2 with ones corresponding to the changed size. Therefore, in the illustrated prior art, two sets of lower spindle assemblies are used.
B ₁ and B ₂ are installed in series on a slide table 15, and through linear movement of the table 15, the assemblies B ₁ and B ₂ can be switched to positions concentric with the upper spindle assembly A, respectively. Therefore, if you prepare and place upper and lower rims 4 and 5 of the rim size that matches the size of the next tire T in assembly B ₂ ,
After the inspection work of the group of tires T by the assembly B ₁ is completed, the lock by the locking device 26 is released, and the assembly B ₁ having the upper and lower rims 1 and 2 is lowered via the lifting cylinder 19. , is housed in the original position of the slide table 15, and then the slide table 15 is moved backward along the rail 17 to the right toward FIG. The assembly B ₂ comprising the upper and lower rims 4 and 5 can be switched and set in a concentric position with the upper spindle assembly A, and the assembly B ₂ is operated in the same manner as the assembly B ₁ below. This makes it possible to perform uniformity work on tires T of different sizes, which makes it possible to automatically exchange rims, make multiple sets of different sizes, and use different lower rim sets. .

(Problems to be Solved by the Invention) The above-mentioned conventional technology has the following problems. That is, the slide table 15 disposed below the upper spindle assembly, and the same table 1.
The rim transfer means is provided by a plurality of lower spindle assemblies installed in series on the lower spindle assembly 5 and each having upper and lower rim sets of different sizes.
As is well known, in a tire uniformity machine, an upper spindle assembly is installed along with a rotating device above the center of a nearly rectangular machine frame, and a conveyor for the tires to be tested is installed on one side at the bottom of the frame. A lower spindle assembly is installed in the same conveyor so that it can be vertically raised and lowered, and a loading device for applying a load is installed in the middle, saving space. The margin is narrow from the beginning. For this reason, unlike the prior art, a plurality of lower spindle assemblies B are arranged in series like B ₁ and B ₂ on the transfer table 15 that moves linearly forward and backward by the piston rod of the forward and backward cylinder 18. Therefore, unless the Uniformity machine 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 that correspond to each of the various tire sizes. Yes, there is also a cylinder 18 for advancing and retreating.
In linear motion by pushing and pulling the piston rod, the rim replacement work required to switch to use a rim size other than the two sets of rims can also take 30 to 60 minutes.
This requires a long period of time, on the order of minutes, and is 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 changing type tire uniformity machine, and allows the necessary rim assembly to be performed without expanding the installation space in the conventional uniformity machine. It doubles the storage capacity and significantly improves workability and productivity. Specifically, it is installed on the rotatable upper spindle held in the tire uniformity machine and located at the center. , an upper spindle assembly equipped with a locking device for automatically locking and removably locking the upper rim, and a rotatable lower spindle, which is also held in the machine so as to be able to rise and fall and is located at the center thereof, is connected to the upper spindle. In an automatic rim changeable tire uniformity machine comprising a lower spindle assembly which is concentric and can be automatically connected, and has a lower rim on which the upper rim can be placed, a plurality of the lower spindle assemblies are provided. The assemblies are arranged and held at equal circumferential positions on the circumferential side of a transfer table which is rotatably provided in the machine and can be raised and lowered vertically, and the lower spindle of each assembly is attached to the upper spindle on the circumferential side of the table. The same number of positioning regulators are arranged at equal positions on the circumference to stop the table concentrically with the table, and a common positioning restrainer that is removable and engageable with each of the regulators is arranged outside the same table. There is a particular thing.

(Function) According to the above-mentioned technical means of the present invention, as shown in FIGS. 1 and 2, a disk-shaped transfer table 15 is installed in the tire uniformity machine below the upper spindle assembly A. A plurality of (four holes are shown in the figure) fitting holes C ₁ are installed on the fixed pedestal 16 so as to be able to stop rotating, and around the same table, the centers are equally spaced on the circumference.
~ _C4 , and insert four lower spindle assemblies B, assemblies _B1 to _B4 , as previously illustrated in FIGS. 7 to 9, into each of the stud holes _C1 to _C4, respectively. It is fitted in such a way that it can be moved up and down vertically. Furthermore, lower spindle assemblies B ₁ to _{B 4} are located below the table 15 and concentrically with the upper spindle assembly A.
A lifting cylinder 19 is installed to vertically raise and lower the rims toward the upper spindle assembly A, and upper and lower rims of different sizes are assembled and attached to the lower spindle 10 of the lower spindle assemblies _B1 to _B4 , respectively. By rotating and stopping the transfer table 15, each of the lower spindle assemblies B ₁ to B ₄ is stopped at a position concentric with the upper spindle assembly A and the lifting cylinder 19. Now, four assemblies B ₁ to _{B 4} having upper and lower rim sets of different sizes can be selectively supplied in response to a change in tire size, and can be replaced and removed. At this time, in the present invention, there are four lower spindle assemblies _B1 to _B4.
In order to reliably stop the transfer table ₁₅ at _a fixed position, as illustrated in FIG.
3 to 26 are similarly disposed at equal positions on the circumference, and positioning restraints 22 that can be engaged with and disengaged from each of these regulators 23 to 26 are moved forward and backward toward the regulators 23 to 26 by, for example, an actuation cylinder 20. For example _, in FIG.
When the assembly B1 comes close to the concentric position with the assembly _B1 , the restrainer 22 advances and engages and restrains the regulator 23 for stopping the assembly B1 in the concentric position. It is possible to stop the B ₁ in the correct concentric position, which allows for a more diverse range of size changes compared to the conventional slide table advance/retract method, and also speeds up the rim replacement/removal work. , work efficiency and productivity can be improved.

(Embodiment) A suitable embodiment of the rim transfer device according to the present invention will be described with reference to FIGS. 1 to 6.

In FIG. 1, an upper spindle assembly A installed via a holder 33 on the upper part of a body frame 32 in a tire uniformity machine is rotatably held by bearings 8 and 9 as in the conventional type. The upper spindle 6 is equipped with a rotating pulley 7, a tapered cone-shaped fitting hole 12 formed at the lower end of the spindle 6, and a locking device 34 for automatically locking and releasing the upper rim with one touch. In this embodiment, the locking device 34 is different from the locking device 26 shown in FIG. a tapered cone-shaped fitting protrusion 11 that is provided with a correcting chuck 36, protrudes from the center upper surface of the rim mounting flange 11 fixed to the upper rim 1 by the chuck 36, and is fitted into the fitting hole 12;
The connector 37 attached to a 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 10a that fits into the fitting protrusion 11a of the mounting flange 11, and a lower rim 2 that surrounds the protrusion 10a and is fixed to the upper surface of the lower spindle 10. Through the fitting of the mating protrusion 10a and the mating protrusion 11a of the rim attachment flange 11, the upper rim 1 integrated with the flange 11 can be placed on the lower rim 2 in an overlapping manner. In the case of the example, four lower spindle assemblies B are prepared as B ₁ to _{B 4} , and each assembly is
It is assumed that the upper and lower rim sets including the upper and lower rims 1 and 2 in _B1 to _B4 have different rim sizes. 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. It is removably fitted to the lower end of the assembly B to move the assembly B up and down. In the figure, 38 is a conveyor (roller conveyor) for transporting the tires to be tested, and the conveyor 38 and the lifting cylinder are connected to each other. A transfer table 15 is rotatably disposed at an intermediate position between the transfer table 19 and the table 19 via _a frame ₁₆ . Assemblies B ₁ to _{B 4} are arranged in a row so that they can be vertically raised and lowered, and in _FIG.
A state in which lower spindle assemblies B ₁ and B ₃ are fitted and supported on C ₃ is shown.

The transfer table 15 described above, and the four fitting holes C ₁ to _{C 4} at evenly distributed positions on the table 15
The details of the structural embodiment for rotating and stopping the lower spindle assemblies B1 to B4, which are equipped with upper and lower rims of various sizes and supported by the lower spindle assemblies _B1 to _B4 , which are fitted in the upper and lower rims of each size, are as illustrated in FIGS. 2 to 5. The disk-shaped transfer table 15 is mounted on a fixed pedestal 16 installed in the lower part of the frame 32, with its central axis 39 supported by a bearing 2.
The timing pulley 30 of the drive motor 18 is rotatably supported by the timing pulley 30 via the shafts 1 and 22 and attached to the central shaft 39 as shown in FIG.
1. Rotation can be stopped by connecting the timing belt 29. Around the table 15, four fitting holes C ₁ to C ₄ are arranged in a row at equal positions on the circumference, and lower spindle assemblies B ₁ to _{B 4} are installed in each fitting hole C ₁ to C ₄ , respectively. The centers of each of the assemblies _B1 to _B4 , that is, the centers of the respective fitting holes _C1 to _C2 , are connected to the upper spindle assembly A and the lifting cylinder mentioned above. As the table rotates, the assemblies pass through a concentric position with the table 19, and the assemblies are placed at intermediate positions between adjacent assemblies B ₁ to B ₄ around the table 15, that is, at positions equally divided around the circumference. B ₁ positioning regulator 23, assembly
The same number of regulators 24 for B ₄ , the same regulators 25 for assembly B ₃ , and the same regulators 26 for assembly B ₂ are arranged in the same number, and each regulator 23 to 26 is on the tapered side. It has a substantially isosceles triangular shape with 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 is connected to the outside of the table 15 via an advancing/retracting cylinder 20.
The restrictor 22 is disposed so as to be movable toward the center of the restrictor 5 and along the radial direction.
A guide notch 22a having a substantially isosceles triangular shape having tapered sides matching the shape of the guide notch 22a and an engaging portion 22b of the roller 40 are formed at the center of the bottom of the notch 22a. Further, a stop limit switch 28 and a selection limit switch 27 are disposed at the front position in the rotational direction of the table 15 (counterclockwise as shown by the arrow in the figure) and at the rear position, respectively, on the outside of the table 15 with the restrainer 22 in between. By providing this, the assemblies B ₁ to _{B 4} equipped with the upper and lower rims of the desired size can be stopped at a predetermined position in the following manner. That is, although not shown, by specifying one of the assemblies B ₁ to _{B 4} equipped with upper and lower rims that match the target tire to be tested using a switch on the operation panel, for example, it is possible to is the lower spindle assembly _B1 , the table 15 is rotated counterclockwise via the drive motor 18, the timing pulley 31, the timing belt 29, and the timing pulley 30 by the switch-in,
When the assembly B ₁ passes the selection limit switch 27, the motor electric circuit is turned off and the table 15 continues to rotate slightly due to inertia, but the assembly
Table 15 adjacent to the same assembly B ₁ for B ₁
By actuating the stop limit switch 28 using a striker 41 attached around the table 15, 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 B ₁ 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 restraint 22 along the radial direction toward the center of the table by the advancing/retracting cylinder 20, the movement of the positioning restraint 22 for the assembly B ₁ located in the vicinity of the restraint 22 is performed. The regulator 23 is forcibly guided toward the center along either tapered side surface of the guide notch 22a of the roller 40 at the tip of the restrictor 22, and the roller 40 is guided toward the center by the roller 40 at the center of the guide notch 22a. the assembly by mating with
B ₁ is properly regulated and restrained in a concentric position with the upper spindle assembly A and the lifting cylinder 19, ie, in a predetermined position, and correction of center deviation is obtained. From now on, the ascent in assembly B ₁ stopped in the fixed position,
The upper rim 1 is automatically attached to the assembly A, the assembly B ₁ is lowered once, the tire to be tested is set onto the lower rim 2 of the assembly B ₁ , and the assembly B ₁ is raised both times to achieve the same result. The attachment and retention of the tire to the upper and lower rims 1 and 2, the integration of both rims 1 and 2, and the integration of the upper and lower spindle shafts 6 and 10 can be achieved in the same manner as in the past. 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. The selection supply of other lower spindle assemblies B ₂ to _{B 4} is similarly provided on table 1.
The same result can be obtained by the rotation operation in step 5, and thus it is possible to replace and remove the upper and lower rims of 4 sizes.

(Effects of the Invention) According to the rim transfer device of the present invention, a maximum of two sets of lower spindle assemblies B ₁ to B ₂ can be created using the conventional transfer table 15 that moves forward and backward in a straight line.
Compared to the system according to
6 and one positioning restraint 22 that can be engaged with and detached from these fixed angle rotation stopping means,
Each assembly B, which is made up of rim assemblies of various rim sizes, can be stored in a compact space without requiring an expansion of the installation space inside the tire uniformity machine. , and allows these assemblies B to be selectively supplied to predetermined replacement/detachment positions with the shortest movement stroke, covering most current rim sizes.
The rim replacement work, which previously required a long 30 to 60 minute process and manual work assistance, can now be completed in a short time of about 30 seconds with full automation. This can dramatically improve 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 device of the present invention;
The figure is a plan view of the main part of the transfer table, the third
The figure is Figure 2-line, Figure 4 is Figure 3-line,
Fig. 5 is a sectional view along the line of Fig. 2, Fig. 6 is a side sectional view of the main part of the collector chuck type locking device, and Figs. FIG. 1, 4...Upper rim, 2,5...Lower rim, A...Upper spindle assembly, B~ _B4 ...Lower spindle assembly, _C1 ~ _C4 ...Assembly fitting hole, 15...Transfer table, 18 ... Drive motor, 20... Advance/retreat cylinder, 22... Positioning restraint, 23-2
6... Positioning regulator, 6... Upper spindle, 1
0...lower spindle, 27...lock device, T...tire.

Claims (1)

[Claims] 1 A rotatable upper spindle held in the tire uniformity machine and located at the center thereof, and an upper spindle assembly 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 consisting of 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 are vertically raised and lowered. The same number of positioning regulators are arranged on the circumferential side of the table so that each assembly can be stopped at a position where the lower spindle is concentric with the upper spindle. A rim transfer device for an automatic rim exchange type tire uniformity machine, characterized in that a common positioning restrictor is disposed on the outside that is removable from each of the restrictors.