JPS644561Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire mount that allows the positions of a guide roller and a pressure roller to be adjusted in stages according to the tire or wheel size. For example, as shown in FIG. 1, a conventional tire mounter is connected to a lower part of an outer shaft 6 that is connected to a gear box 5 in which a plurality of bevel gears 1, 2, 3, and 4 are meshed in a box shape, and to a drive motor 7. Support arms 9, 1 are attached to the lower part of the inner shaft 8.
A guide roller 11 and a pressure roller 12 are respectively provided on the support arms 9 and 10, and the guide roller 11 is moved onto the lifting table 13. Tire 1 placed on wheel 14 of
The pressure roller 12 rotates approximately half a turn along the bead portion 15a of the
12 to fit the tire 15 into the wheel 14. However, although this conventional device can handle wheels 14 and tires 15 of standard sizes, it has the disadvantage that it cannot handle wheels of other sizes, and thus lacks versatility. For this reason, conventionally, pneumatic cylinders are attached in the axial direction of the support arms 9 and 10, and this cylinder is linked to the operation of multiple sensors that detect the wheel size, so that the positions of the guide roller 11 and the pressure roller 12 are automatically adjusted. A system has been proposed that can be adjusted accordingly. However, although the conventional device described above provides versatility, the detection accuracy of each sensor varies and is not constant for, for example, a standard size wheel.
The positions of both rollers 11 and 12, which are set by the cylinder in response to the signal from this sensor, are also different, and there is a concern that the function as a tire mounter may be impaired, especially when this type of work is aimed at mass production. Then, there is a risk of confusion in the process, which is a problem. Moreover, since this conventional device is equipped with multiple sensors, the equipment costs are high, and the adjustment, inspection, and maintenance work is complicated, making it difficult to maintain. The present invention solves these conventional deficiencies, and makes it possible to always obtain constant tire mounting quality for wheels and tires of a certain size, and to adjust the position of the guide roller and pressure roller within a certain range of tire or wheel sizes. The objective is to provide a tire mount that can be adjusted in stages to ensure versatility by making it compatible with tires and wheels of various sizes, while also simplifying the structure and facilitating maintenance. do. For this reason, the tire mounter of the present invention is a tire mounter equipped with a pair of swing arms, a guide roller and a pressure roller that swing integrally with the swing arms, a fixed piston is fixed to the swing arm, and the fixed pistons are fixed to the swing arm. A movable piston is slidably mounted between the movable pistons, and the displacement of these movable pistons is regulated by a stepped portion formed on the swing arm.
A cylinder tube for accommodating a fixed piston and a movable piston is provided, this cylinder tube is slidably mounted on a swing arm, and a stepped portion is provided on an inner circumferential surface of this cylinder tube that can engage with a flange portion of a movable piston. , the cylinder tube is displaced in accordance with the pressure displacement of each movable piston, and the guide roller and pressing roller attached to the cylinder tube are moved toward and away from the center of rotation. Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIGS. 2 to 10, reference numerals 16 and 17 are a lower frame and an intermediate frame framed in a substantially horizontally elongated rectangular shape. Wheel receivers 18, 18 are provided on the upper portion of the wheel receivers 18, and are adapted to receive wheels and tires that are stacked and fed in from a carry-in conveyor (not shown) in a stacked manner. Reference numeral 19 denotes an elevating cylinder installed facing between the wheel receivers 18, 18, and an elevating table 21 is fixed to the upper end of the piston rod 20, so that it can move in and out between the wheel receivers 18, 18 by the expansion and contraction of the piston rod 20. I have to.
That is, the elevating table 21 moves upward after the carrying-in table is carried in, and in the process of upward movement, a set of wheels and tires placed on the wheel receivers 18, 18 are transferred onto the mounting surface. After the wheels and tires are placed on it, it moves up a certain distance, maintains that displacement for a certain period of time, and then moves down and returns to its original position. A guide rod 22 has an upper end connected to the lifting table 21, and is designed to stabilize the operation of the lifting table 21. Reference numeral 23 denotes a support shaft provided above the lifting table 21, and driven bevel gears 24, 2 are mounted at the upper position.
5 and a drive bevel gear 26 are provided in a box-shaped gear box 27. A drive shaft 28 is fixed to the drive bevel gear 26, and a clutch, a reduction gear, a drive motor, etc. (not shown) are fixed to the drive shaft 28. ) are linked. The support shaft 23 is composed of an inner shaft 29 and an outer shaft 30. A driven bevel gear 25 is fixed to the upper part of the inner shaft 29, and a driven bevel gear 24 is fixed to the upper part of the outer shaft 30. The shafts 29, 30 are rotatable in mutually opposite directions. Reference numeral 31 indicates a swing arm whose one end is integrally fixed to the inner shaft 29, and reference numeral 32 indicates a swing arm whose one end is integrally fixed to the outer shaft 30. To explain one of the swing arms 32, the swing arms 32 are composed of a tapered stepped shaft having a large number of steps in the axial direction, as shown in FIGS. 4 and 5. A large number of splines 33 are provided to protrude in the axial direction, and one end of a stepped cylinder tube 34 whose diameter gradually increases outwardly is fitted onto the splines 33 so as to be slidable in the axial direction. There is. 3
5 is a first fixed piston fixed approximately at the center of the axial length of the swing arm 32; 36 and 37 are first and second movable pistons mounted on the shaft end side of the swing arm 32 so as to be able to slide a certain distance; piston 35,3
The outer pressure receiving area of pistons 37, 3
The numbers are broadly arranged in the order of 6 and 35. Reference numeral 38 denotes a partition wall formed on the inner circumferential surface of the cylinder tube 34 at the substantially central center in the longitudinal direction, and a first hollow chamber 39 that accommodates the first fixed piston 35 is formed on the inner and outer wall surfaces of the partition wall.
and an air supply port 41 that opens toward the second hollow chamber 40 that accommodates the second movable pistons 36 and 37;
42 are provided, and these air supply ports 41 or 4
By supplying pressurized air to 2 and increasing the internal pressure of the first or second hollow chamber 40, the movable piston 36 is pressure-displaced, and in the former case, the cylinder tube 34 is displaced in the axial direction of the swing arm 32. That's what I do. Reference numeral 43 denotes an air supply port provided at the shaft end of the swing arm 32, one end of which opens toward a recess 44 formed at the center of the inner end of the second movable piston 37, and pressurized air is supplied to the recess 44. is supplied to cause the first and second movable pistons 36 and 37 to move away from each other, causing the displacement of the cylinder tube 34 to follow this movement. 45 is the rotating arm 3
A second fixed piston is fixed to the tip of the second movable piston 37, and an air supply port 46 communicating with the second hollow chamber 40 is opened at the inner end surface of the second fixed piston, and pressurized air is supplied to this to move the second movable piston 37 to the second movable piston 37. 2 fixed piston 45
The displacement of the cylinder tube 34 is made to follow this movement. 47, 48 are recesses formed in the inner peripheral surfaces of the first and second movable pistons 36, 37, and these side walls 47a, 48a
Stepped portions 49 and 5 formed on the circumferential surface of the swing arm 32
0 to restrict the sliding displacement of each movable piston 36, 37. In addition, 51
Reference numeral 52 indicates an air vent opened in the stepped portion of the cylinder tube 34 , and 52 indicates a plate cover attached to the tip of the cylinder tube 34 . In the cylinder tube configured in this way, four types of displacement with respect to the pivot center of the pivot arm 32 are obtained by supplying pressurized air to each air supply port. That is, the case shown in FIG. 6 in which pressurized air is supplied to the air supply port 42, and the case shown in FIG.
The case shown in FIG. 7 in which pressurized air is supplied to the air supply port 46, the case shown in FIG. 8 in which pressure air is supplied to the air supply port 46, and the case shown in FIG. Of these, the displacement of the cylinder tube 34 in the case shown in FIG. 6 is the smallest, followed by the order shown in FIGS. 7, 8, and 9. Therefore, as will be described later, the pressurized air supply port is switched according to the wheel and tire size, and for the smallest size, the one shown in Figure 6 is used, and for intermediate sizes, the one shown in Figures 7 and 8 is used. In the case of the largest size, it will be used as shown in FIG. However, in this usage, pressurized air is supplied to each single air supply port 41, 42, 4.
For example, if pressurized air is simultaneously supplied to any plurality of air supply ports among these air supply ports, each piston 3
A desired displacement of the cylinder tube 34 can be obtained depending on the differential pressures of 5, 36, 37, and 45. In addition, reference numerals 53 and 54 in the figure denote a rotatably supported guide roller and a pressure roller, which are configured to rotate along the bead of the tire or press against the side wall of the tire. 34 so as to be movable integrally therewith. Reference numeral 55 denotes a cylinder fixed to the outer peripheral surface of the cylinder tube 34 , and the expansion and contraction of the piston rod 56 allows the pressing roller 54 to move up and down. Reference numeral 57 is a guide rod designed to stabilize the operation of the piston rod 56, and 58 is a center cone attached to the lower end of the inner shaft 29 so as to be biased downward, and can be inserted into the hub hole of the wheel. Reference numeral 59 denotes an auxiliary cylinder provided on one side of the lifting table 21, which extends the piston rod as shown in FIG. In particular, the displacement of the piston rod is adjusted in stages according to various tire widths to assist tire mounting work. Therefore, it is also possible to configure this auxiliary cylinder 59 like the aforementioned pivot arm and cylinder tube. 62 is an O-ring attached to the inner and outer peripheral surfaces of each piston 35, 36, 37, and 45. When a pair of tires 60 and wheels 61 stacked in a stacked manner on the wheel receivers 18, 18 of the tire mounter configured in this way are carried in by the carry-in conveyor, the piston rod 20 of the lifting cylinder 19 The tire 60 is extended, and during the extension process, the tire 60 is placed on the lifting table 21 from the wheel supports 18, 18.
and the wheel 61 are transferred, and when the lifting table 21 is further raised, the center cone 58 is inserted into the hub hole of the wheel 61, and while the wheel 61 is centered, a pinching pressure is created between the lifting table 21 and the center cone 58. and fixed.
At this time, the guide rollers 53, 53 come into contact with the bead portion of the tire 60 to adjust the posture before fitting into the wheel 61, while the lifting cylinder 19 maintains the elongated displacement of the piston rod 20 to maintain the above state. maintain. Usually, before the lifting cylinder 19 is operated, the cylinder tube 3 is adjusted according to the size of the tires 60 and wheels 61 to be carried in.
4 is operated, the guide roller 53 and the pressure roller 5
4 turning radius is adjusted. That is, when the sizes of the tire 60 and wheel 61 are the smallest, pressurized air is supplied to the air supply port 42. For example, if the cylinder tube 34 is placed in the state shown in FIG. Pressure air flows into the gap between them, and the internal pressure rises, causing pressure displacement of the first movable piston 36 facing one end of the second hollow chamber 40 to the left in the figure. 36 comes into contact with the second movable piston 37, and these movable pistons 36,
37 moves toward the second fixed piston 45 side. In addition, in FIG. 5, this state is already in place. in this case,
These pistons 36 and 37 do not have any engagement relationship with the cylinder tube 34 during displacement in the above direction, so they do not affect the displacement of the cylinder tube 34 . On the other hand, the pressure of the second hollow chamber 40 is
8 , the cylinder tube 34 , which is integral with the wall 38, is pressure-displaced to the upper right in FIG. After the partition wall 38 is displaced in the above direction, it comes into contact with the end surface of the first fixed piston 35 and stops operating, and maintains that position and also maintains the stopped position of the cylinder tube 34 . Therefore, the turning radius of the guide roller 53 and the pressing roller 54 about the inner shaft 29 is adjusted to a small diameter, and tire mounting work on the small-diameter tire 60 and wheel 61 becomes possible. FIG. 6 shows these states. Next, for example, when mounting an intermediate small size tire 60 and a wheel 61 from the state shown in FIG. 5, the pressurized air is switched from the air supply port 42 to the air supply port 43. That is, when pressurized air is supplied to the air supply port 43 in the state shown in FIG. The air flows into the gap between the first and second movable pistons 36 and 37 communicating with the recess 44, and the pressure in this gap increases. Therefore, one movable piston 36 facing the second hollow chamber 40 is pressure-displaced to the upper right in FIG . 63 to move the cylinder tube 34 and create its displacement. After the first movable piston 36 is displaced a certain amount, the side wall 47a of the recess 47
The cylinder tube 34 stops operating when it engages with the second step 49, and at the same time, the cylinder tube 34 also stops operating and maintains that state. At this time, the other movable piston 37 facing the second hollow chamber 40 receives the internal pressure of the second hollow chamber 40 on its inner end surface, and is pushed to the upper left in FIG. 5 and brought into pressure contact with the second fixed piston 45. The state similar to that shown in FIG. 5 is maintained. In this case, pressurized air is supplied to the air supply port 41 and the first hollow chamber 39 is
If the internal pressure of the cylinder tube 34 is maintained at a constant pressure, the displacement of the cylinder tube 34 can be stabilized. 7th
The figure illustrates these states. Further, for example, when mounting an intermediate large size tire 60 and wheel 61 from the state shown in FIG. 5, the air supply port is switched to 46 and the cylinder tube 34 is adjusted. That is, when pressurized air is supplied to the air supply port 46 from the state shown in FIG.
Pressurized air flows between the inner end surface of the second fixed piston 45 and the second
It flows into the gap between the movable piston 37 and the outer end surface of the movable piston 37, and the pressure in this gap increases. For this reason,
The second movable piston 3 facing this second hollow chamber 40
7 is pressure-displaced to the upper right in FIG. Form a displacement. At this time, the inner end surface of the second movable piston 37 comes into contact with the adjacent first movable piston 36, thereby displacing the piston 36 in the same direction. Second
After a certain displacement, the movable piston 37 stops operating when the side wall 48a of the recess 48 engages with the step 50 of the swing arm 32, and at the same time, the cylinder tube 34 also stops operating and maintains that state. On this occasion,
The first movable piston 36 is sandwiched between the second movable piston 37 and the partition wall 38 . Therefore, in this case, if pressurized air is also supplied to the air supply port 41 and the internal pressure of the first hollow chamber 39 is maintained at a constant pressure, the displacement of the cylinder tube 34 can be stabilized. FIG. 8 illustrates these conditions. Further, for example, when mounting the largest tire 60 and wheel 61 from the state shown in FIG. 5, the air supply port is switched to 41 and the cylinder tube 34 is adjusted. That is, FIG. 5 already shows this state. In this case, pressurized air supplied from the air supply port 41 flows into the first hollow chamber 39, and the partition wall 38 facing the first hollow chamber 39 moves toward the tip of the swing arm 32 due to its pressure action. The cylinder tube 34 , which is integral with the partition wall 38, is displaced under pressure in the same direction. As the cylinder tube 34 is displaced, the partition wall 3
8 abuts on the first movable piston 36, the piston 36 abuts on the second movable piston 37, these pistons 36, 37 move in the same direction as the cylinder tube 34 , and the second movable piston 37 abuts on the second movable piston 37. When abutting against the inner end surface of the piston 45, these pistons 36, 37 stop operating, are pushed between the second fixed piston 45 and the partition wall 38, and maintain this state while remaining adjacent to each other. FIG. 9 illustrates this state. In this way, in the present invention, the cylinder tube 3 is adjusted according to the size of the tire 60 and the wheel 61.
4 and 34 in stages, and by this displacement, the guide rollers 53 and 53 fixed to the cylinder tubes 34 and 34 and the pressure rollers 54 and 54 are moved toward and away from the support shaft 23, and the distance between them is adjusted. Because it is handled mechanically by switching the air supply port, there is no malfunction, and the adjustment can be made by adjusting the tire 60.
This can be done uniformly depending on the size of the
This makes it possible to obtain homogeneous adjustment accuracy. In this way, connect the cylinder tube 34 to the tire 60.
After making adjustments according to the size of the wheel 61, the piston rod 56 of the cylinder 55 is extended, the pressing rollers 54 are moved downward, and the side wall of the tire 60 is pressed. On the other hand, when the drive motor is driven before or after this operation, the power is transmitted to the driven bevel gears 24 and 25 via the drive shaft 28 and the drive bevel gear 26, and further from the driven bevel gear 24 to the outer shaft 30, and then to the driven bevel gear 25 to the inner shaft 29, causing these shafts 29, 30 to rotate in opposite directions. For this reason, these shafts 29,
a rotating arm 31 having one end integrally fixed to 30;
32 turn in opposite directions, while the guide rollers 53, 53 rotate along the bead of the tire 60, and the pressing rollers 54, 54 press the side wall of the tire 60 to fit the tire 60 onto the wheel 61. It's crowded. When the tire 60 is attached to the wheel 61, the elevating cylinder 19 descends and the wheel 61
The center cone 58 is pulled out from the hub hole of
After the lifting cylinder 19 returns to its original position, the tire assembly on the lifting table 21 is carried out to the next process. As described above, the tire mounter of the present invention has a plurality of fixed pistons and movable pistons on the swing arm, and while regulating the displacement of the movable pistons,
A cylinder tube that accommodates a fixed piston and a movable piston is slidably attached to the swing arm, and the cylinder tube is actuated by the tube's internal pressure and the displacement of the movable piston, and the cylinder tube is equipped according to the tire or wheel size. Since the turning radius of the guide roller and pressure roller can be adjusted, it is possible to mount tires according to various tire sizes, and while this versatility can be obtained, this can be done mechanically by making full use of cylinder tubes. Because it is processed, there are no malfunctions, constant adjustment accuracy can be ensured, and high reliability can be ensured. In addition, with this invention, the desired effect can be obtained without using expensive sensors like in the past when making the above adjustments, so equipment costs can be reduced, and since complicated adjustments of sensors etc. are not required, maintenance is reduced. It has many advantageous practical effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a front view showing an embodiment of the present invention, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a sectional view showing main parts of the present invention. , FIG. 5 is a cross-sectional plan view taken along line A-A' in FIG. 4, and shows the relationship between the swing arm and the cylinder tube in an enlarged manner, and FIGS. 6 to 9 show various adjustments of the cylinder tube. A sectional view showing the state, and FIG. 10 is an explanatory view showing an example of the auxiliary cylinder used in the present invention. 31, 32... Swivel arm, 34 ... Cylinder tube, 35, 45... Fixed piston, 36,
37...Movable piston, 49, 50...Step part, 5
3...Guide roller, 54...Press roller, 6
3, 64...Step part, 65, 66...Flange part.

Claims (1)

[Scope of utility model registration request] A pair of swing arms 31 and 32 and a swing arm 3
a guide roller 53 that rotates in pairs with 1 and 32;
53 and pressing rollers 54, 54, fixed pistons 35, 45 are fixed to the rotating arms 31, 32, and movable pistons 36, 37 are slidable between these fixed pistons 35, 45. mounted and these movable pistons 36,
37 is regulated by stepped portions 49 and 50 formed on the swing arms 31 and 32, while the fixed piston 3
5, 45 and movable pistons 36, 37 are provided, this cylinder tube 34 is slidably attached to the swing arms 31, 32, and the movable pistons 36, 37 are mounted on the inner peripheral surface of this cylinder tube 34. The guide rollers 53, 53 mounted on the cylinder tube 34 are provided with step portions 63, 64 that can engage with the flanges 65, 66 of the movable pistons 36, 37, and displace the cylinder tube 34 in accordance with the pressure displacement of each movable piston 36, 37. and a pressure roller 54,
A tire mounter characterized by being able to adjust the turning radius of 54.