HRP20191218A2 - Tire holding device - Google Patents

Abstract

The tire holding device (10) includes a lower rim (20) that can support one side of the tire (TR) in the width direction (Dw), an upper rim (30) that can support the other side of the tire (TR) in the width direction (Dw), a gripping part (40) comprising a drive shaft (42) mounted on the upper ring (30) and a cylinder (41) which moves the drive shaft (42) forwards and backwards by fluid pressure, and engages the tire (TR) so that the upper ring ( 30) moves close and away from the lower ring (20), the holder (50) provided in the upper ring (30) and protrudes towards the lower ring (20), and the connecting part (60) provided in the lower ring (20) , and includes a recessed part on which the holder (50) is detachably mounted.

Description

The field of technology

This invention relates to a tire holding device.

State of the art

For tires used in vehicles such as cars, trucks, buses and the like, there are tires that are produced by vulcanizing under high temperature and high pressure in a tire vulcanizer. In the vulcanization rubber manufacturing process, the vulcanized rubber is transferred from the rubber vulcanizer to the chiller, cooled by the chiller, and shipped out.

As a cooling device, PTL 1 discloses a cooling device comprising a tire holding device in which an upper ring and a lower ring are mounted on the tire to be transferred to hold the tire.

List of allegations

Patent literature

[PTL 1] US Patent No. 7740464

Summary of the invention

Technical problem

In the tire holding device as described in PTL 1, the gap between the upper rim and the lower rim is held in position by a hydraulic cylinder rod across the width of the tire. However, due to aging, internal leakage of the cylinder due to misalignment of the upper and lower rings, wear of the sealing or the like, there is a fear that the quality of the manufactured rubber may deteriorate. Accordingly, the object of the present invention is to provide a tire holding device that can maintain the quality of the tire even under long-term use.

Solution to the problem

In accordance with the first aspect of the present invention, there is provided a device for holding a tire, comprising: a first hoop capable of supporting one side of the tire in the width direction; a second ring that can support the other side of the tire in the width direction; a tire gripping portion including a drive shaft mounted on the second rim and a cylinder that moves the drive shaft back and forth by fluid pressure and grips the tire so that the second rim moves close to and away from the first rim; a holder which is placed on one ring of the first ring and the second ring and protrudes towards the second ring; and a connecting part which is provided on the second ring and has a recessed part which is detachably mounted on the holder.

According to this aspect, in the tire holding device, since the holder and the indented portion of the coupling part are placed on top of each other when the tire is held between the upper ring and the lower ring, the tire holding device prevents misalignment between the upper ring and the lower ring due to wear , and mechanical concentricity is achieved between the upper ring and the lower ring. Therefore, even when the tire holding device is used for a long time, the tire holding device prevents insufficient concentricity in the retained tire and can maintain the quality of the tire.

According to the tire holding device according to the second aspect, in the tire holding device according to the first aspect, the holder has a shape that extends along the axis of the drive shaft and the connecting part includes a tubular part that protrudes toward one rim and has an inner peripheral surface that extends along the axis, and the inner peripheral surface defines the indented part.

According to this aspect, in the tire holding device, since the recessed portion defined by the tubular inner peripheral surface and the holder are placed on top of each other, it is possible to place the holder and the tubular portion on top of each other by moving the second ring near the first ring in the axial direction using the rubber grip part.

According to the tire holding device according to the third aspect, the tire holding device of the first or second aspect further includes a regulating part that can regulate the axial movement of the second hoop.

According to this aspect, since the tire holding device can regulate the axial movement of the second rim, even when internal leakage of the cylinder is generated due to aging due to sealing wear or the like, it is possible to prevent the width of the rim from expanding from a predetermined value. Therefore, even when the tire holding device is used for a long time, the tire holding device can ensure the accuracy of retaining the rim position and can maintain the quality of the tire.

According to a fourth aspect of the present invention, there is provided a device for holding a tire, which includes: a first hoop capable of supporting one side of the tire in the width direction; a second ring that can support the other side of the tire in the width direction; a tire gripping portion including a drive shaft mounted on the second rim and a cylinder that moves the drive shaft back and forth by fluid pressure and grips the tire so that the second rim moves toward or away from the first rim; and a regulating part that can regulate the axial movement of the second ring.

According to this aspect, since the tire holding device can regulate the axial movement of the second rim, even when internal leakage of the cylinder is generated due to aging due to sealing wear or the like, it is possible to prevent the width of the rim from expanding from a predetermined value. Therefore, even when the tire holding device is used for a long time, the tire holding device can ensure the accuracy of retaining the rim position and can maintain the quality of the tire.

According to the tire holding device according to the fifth aspect, in the tire holding device of the fourth aspect, the regulating part clamps the outer part of the drive shaft to regulate the axial movement of the drive shaft.

According to this aspect, since the regulating part clamps the outer part of the drive shaft, it is possible to efficiently use the space around the drive shaft.

Beneficial effects of the invention

According to the aspect of the tire holding device according to the present invention, it is possible to maintain the quality of the tire even under long-term use.

Brief description of the drawing

Figure 1 is an overall view of a tire holding device in the first embodiment of the present invention.

Figure 2 is an enlarged view of the periphery (when moving away) of the holder and connector of Figure 1.

Figure 3 is an enlarged view of the periphery (when zoomed in) of the holder and coupling portion of Figure 1.

Figure 4 is a section of the regulation part (when released) in the first embodiment of the subject invention.

Figure 5 is a section along the V-V line from Figure 4.

Figure 6 is a section of the regulation part (when it is regulated) in the first embodiment of the subject invention.

Figure 7 is a cross-sectional view along line VII-VII from Figure 6.

Fig. 8 is an enlarged view of the periphery (when moving away) of the holder and connecting part in another embodiment of the present invention.

Fig. 9 is an enlarged view of the periphery (when moving away) of the holder and the connecting part in the third embodiment of the present invention.

Fig. 10 is a view showing the periphery (when moving away) of the holder and the connecting part in the fourth embodiment of the present invention.

Fig. 11 is an enlarged view of the periphery (when moving away) of the holder and the connecting part in the fifth embodiment of the present invention.

Figure 12 is a sectional view of the control part (when released) in the sixth embodiment of the present invention.

Figure 13 is a cross-section of the regulating part (when it is regulated) in the sixth embodiment of this invention.

Figure 14 is an overall view of a tire holding device in the seventh embodiment of the present invention.

Figure 15 is an overall view of a tire holding device in the eighth embodiment of the present invention.

Performance description

In the following text, various embodiments in accordance with the present invention will be described with reference to the drawings.

<First Embodiment> The first embodiment according to the present invention will be described with reference to Fig. 1 to 7.

(Total configuration)

The overall configuration of the tire cooling device 1 will be described.

As shown in Figure 1, the tire cooling device 1 includes a tire holding device 10.

The tire cooling device 1 holds and cools the tire TR which is vulcanized under high temperature and high pressure in the previous process by the tire holding device 10 in a state where the inside of the tire TR is filled with compressed air. The tire cooling device 1 cools the tire TR, which is held by the tire holding device 10, by natural air cooling. That is, in the present embodiment, the tire TR held by the tire holding device 10 is cooled by natural air. In other words, the tire holding device 10 of this embodiment acts as a tire cooling device 1 as it is.

As shown in Fig. 1, the tire holding device 10 includes a lower ring 20 (first ring) supporting the lower side of the tire TR, an upper ring 30 (second ring) supporting the upper side of the tire TR, a tire gripping part 40, a holder 50 , the connecting part 60 and the regulating part 70. The tire holding device 10 holds the tire TR between the lower rim 20 and the upper rim 30 on both sides in the width direction Dw.

The tire holder 10 further includes an air supply tube 92, a base part 93, a support 94 and a frame 95.

The frame 95 is mounted on the base part 93 via the support 94 and supports the tire gripping part 40.

The lower ring 20 is located on the base part 93.

Compressed air is supplied from the compressor COM1 of the factory plant to the inside of the tire TR, which is located between the lower rim 20 and the upper rim 30. The compressed air is supplied from the position around the axis Ax of the lower rim 20 to the inside of the tire TR through the air supply tube 92, the through hole 93a of the base portion 93 and the through hole 20a of the lower rim 20. Therefore, the tire holding device 10 is configured so that the inside of the tire TR is filled with compressed air in a position where the tire TR is held on the lower rim 20 and on the upper rim 30.

In Fig. 1, the tire TR, the lower ring 20, the coupling part 60 and the base part 93 are parallel to the axis Ax of the drive shaft 42 and are shown in a cross-section including the axis.

The detailed configuration of each part of the tire cooling device 1 will be described below.

(Part for catching rubber)

The tire gripping part 40 includes a drive shaft 42 and a cylinder 41. The tire gripping part 40 moves the upper rim 30 from a position spaced from the lower rim 20 to a position close to the lower rim 20 along the axis Ax and grips the tire TR.

The drive shaft 42 has a columnar shape extending along the axis Ax. The upper ring 30 is placed on the lower end of the drive shaft 42.

The cylinder 41 moves the drive shaft 42 back and forth in the axial direction by the fluid pressure. In the present embodiment, the cylinder 41 moves the drive shaft 42 forward and backward using hydraulic pressure.

In addition, in the following descriptions, unless otherwise stated, the direction in which the axis Ax of the drive shaft 42 extends is simply referred to as "axial direction Da", and the peripheral direction of the drive shaft 42 is simply referred to as "Peripheral direction Dc" and the radial direction of the drive shaft 42 shaft 42 is simply called "radial direction Dr". Additionally, each axial direction of the orthogonal coordinates is simply referred to as "X direction", "Y direction" and "Z direction". In addition, the upward direction along the "axial direction Da" corresponds to the "Z direction" and the "true direction" corresponds to the "X direction".

(holder)

As shown in Figure 2, the holder 50 is placed on the upper ring 30 and protrudes towards the lower ring 20. In the present embodiment, the holder 50 has a columnar shape extending along the axis Ax. The holder 50 is located in a position where the columnar cylindrical axis coincides with the axis Ax.

The length of the holder 50 is configured to match even if the types of tires TR to be held differ from each other. For example, the length of the holder shaft 50 is shortened so that the tip of the holder 50 does not interfere with the lower rim 20 when the upper rim 30 is closest to the lower rim 20. At the same time, the length of the holder 50 is long enough to maintain the length of coverage of the gripping portion even when holding the tire TR with wide rim width.

(Connecting part)

As shown in Fig. 2, a connecting portion 60 is provided on the lower rim 20 and includes a recessed portion 60a that can be removably mounted on the holder 50.

In this embodiment, the coupling portion 60 comprises a cylindrical portion 61 projecting toward the upper rim 30 and having an inner peripheral surface 60b extending along the axis Ax, and the inner peripheral surface 60b defining a recessed portion 60a. The cylindrical part 61 is located in a position where the cylindrical axis coincides with the axis Ax.

Accordingly, as shown in Fig. 3 , the tire holding device 10 is shaped so that the holder 50 and the recessed portion 60 a engage with each other if the upper rim 30 moves close to the lower rim 20 .

(Regulatory part)

As shown in Figs. 4 and 5, the control part 70 of the present embodiment includes an upper box 71 having a plurality of claw portions 71a arranged to be divided in the peripheral direction Dc, a lower box 72 and a lifting/lowering member 73. Each of the claw parts 71a has an inner peripheral surface 71s which faces the outer peripheral surface of the drive shaft 42 and extends in the axial direction Da. Each of the upper box 71, the lower box 72 and the lifting/lowering member 73 has an approximately rotating body shape with the axis Ax as the axis of rotation. The regulating part 70 is provided in the drive shaft 42 so that each rotational axis of the upper box 71, the lower box 72 and the lifting/lowering element 73 is coaxial with the driving shaft 42. The regulating part 70 is mounted on the frame 95.

The lifting/lowering member 73 has a tapered portion 73a at the upper portion, and the tapered portion 73a has a tapered inner peripheral surface in which the diameter gradually decreases downward.

Both the upper box 71 and the lower box 72 have a cavity in them, the upper box 71 and the lower box 72 are vertically aligned and a single cavity is formed which contains the lifting/lowering element 73.

The lower box 72 includes a sealing portion 72c between the lower box 72 and the drive shaft 42 that penetrates through the lower box 72. The lifting/lowering member 73 includes a sealing portion 73b between the lifting/lowering member 73 and the driving shaft 42 that penetrates the lifting/lowering member 73, and a sealing part 73c between the outer peripheral surface of the lifting/lowering member 73 and the inner peripheral surface of the lower box 72. Therefore, under the lifting/lowering member 73 in the cavity inside the lower box 72, an airtight part 72b is formed. Meanwhile, the regulating part 70 can maintain a hermetic seal in the sealing part 72b thereby allowing the upper box 71, the lower box 72 and the lifting/lowering member 73 to separately slide on the drive shaft 42 in the axial direction Yes.

Therefore, as shown in Fig. 6 and Fig. 7, since the compressed air is introduced from the compressor COM2 of the factory plant into the sealing part 72b through the air supply hole 72a of the lower box 72, the lifting/lowering member 73 is raised along the axial direction Yes , and the tapered portion 73a presses the claw portions 71a from the outer periphery. The pressed claw parts 71a are bent inward in the radial direction Dr, the inner peripheral surfaces 71s clamp the penetrating drive shaft 42, and it is possible to regulate the movement of the drive shaft 42 in the axial direction Da.

In the present embodiment, as described above, compressed air is introduced into the sealing part 72b by pushing the lifting/lowering member 73, and the regulating part 70 regulates the drive shaft 42. When the regulation is released, the compressed air is introduced into the sealing part which is separately mounted on the lifting / lowering element 73 so that the lifting / lowering element 73 is pushed and the regulation of the regulating part 70 can be released.

In this embodiment, the lifting/lowering member 73 is raised and lowered by air pressure using air. However, any fluid can be used, and for example, compressed oil can be introduced into the lower part of the lifting/lowering element 73 so that it raises and lowers the lifting/lowering element 73 by hydraulic pressure.

(Work)

The operation (mechanism) derived from the tire holding device 10 of this embodiment will be described.

If the tire TR is coaxially mounted on the lower rim 20 in the base portion 93, the tire holding device 10 moves the drive shaft 42 downward in the axial direction Da by the cylinder 41, so as to move the upper rim 30 near the lower rim 20, and the holder 50 and the recessed part 60A enter each other.

In this case, the holder 50 is placed on the recessed part 60a and is guided along the inner peripheral surface 60b. Therefore, the device for holding the tire 10 can move the upper rim 30 in the vicinity of the lower rim 20 and the tire TR, thereby ensuring the concentricity of the upper rim 30 in relation to the lower rim 20 and the tire TR.

If the upper rim 30 moves near the lower rim to a position corresponding to the tire rim width TR, the tire holding device 10 raises the lifting/lowering member 73 of the regulating part 70 toward the claw part 71a, so as to regulate the movement of the drive shaft 42 in the axial direction That.

After the movement of the drive shaft 42 in the axial direction Da is regulated, the tire holding device 10 supplies compressed air to the interior of the tire TR placed between the lower rim 20 and the upper rim 30, and the interior of the tire TR is filled with compressed air.

In this case, an upward force in the direction of the Da axis is applied to the upper rim 30 due to the pressure of the compressed air in the tire TR.

In the tire holding device 10, if there is wear of the sealing material or the like due to aging, internal leakage occurs in the cylinder 41. If internal leakage occurs, the movement of the drive shaft 42 in the axial direction Da which is maintained in the predetermined position is generated with respect forced upwards in the axial direction Yes, the width of the rim expands from the set value, and there is a fear that defects in the quality of the TR tire will appear.

In addition, although the drive shaft guide 42 is placed inside the cylinder 41, this guide creates misalignment of the drive shaft 42 by the appearance of wear due to aging caused by sliding friction or radial reaction force, and constant concentricity between the upper ring 30 and the lower ring 20 cannot be ensured.

In the proposed embodiment, on the tire holding device 10, considering that the movement of the drive shaft 42 in the axial direction Da is regulated by the regulating part 70, the width of the rim cannot be expanded more than a predetermined value, and it is possible to prevent the poor quality of the tire TR considering to the width of the rim.

(Repercussions)

In the tire holding device 10, when the tire TR is held between the lower rim 20 and the upper rim 30, since the holder 50 and the recessed portion 60a of the connecting portion 60 are placed on top of each other, the tire holding device 10 prevents misalignment between the lower rim 20 and of the upper rim 30 due to aging, and mechanical concentricity between the lower rim 20 and the upper rim 30 is ensured. Therefore, even when the tire holding device 10 is used for a long time, the tire holding device 10 prevents the lack of concentricity of the retained tire TR and can maintain TR rubber quality.

In addition, since the recessed portion 60a defined by the inner peripheral surface 60b of the cylindrical portion 61 and the holder 50 are connected to each other in the tire holding device 10, the holder 50 and the cylindrical portion 61 are connected by mutually moving the upper rim 30 near the lower rim 20 in the axial direction Yes by means of the rubber gripping part 40.

In addition, in the tire holding device 10, since the movement of the upper rim 30 in the axial direction Da can be regulated, even when there is internal leakage of the cylinder due to aging caused by seal wear or the like, it is possible to prevent the rim from expanding from a predetermined values. Therefore, even when the tire holding device 10 is used for a long time, the tire holding device 10 can ensure the accuracy of the rim holding position and can maintain the quality of the tire TR.

<Second execution>

The second embodiment of the subject invention will be described in accordance with Figure 8.

The structure of the tire holding device 110 in this embodiment is basically the same as the structure of the first embodiment, except that the holder and the connecting part are placed upside down. Other configurations are similar to those of the first version.

As shown in Fig. 8 , the tire holding device 110 has a holder 150 and a connecting part 160 .

The holder 150 is located on the lower ring 20 and protrudes towards the upper ring 30. In this embodiment, the holder 150 has the form of a column extending along the axis Ax. The holder 150 is placed in a position where the columnar cylindrical axis coincides with the axis Ax.

A mounting part 160 is provided on the upper ring 30 and can be placed on the holder 150. The connecting part 160 comprises a cylindrical part 161 which projects towards the lower ring 20 and has an inner peripheral surface extending along the axis Ax, and the inner peripheral surface defines a recessed part 160a . The cylindrical part 161 is placed in a position where the column axis coincides with the Ax axis.

Accordingly, if the upper rim 30 moves close to the lower rim 20, the tire holding device 110 is configured such that the retracted portion 160a and the holder 150 are placed on top of each other.

In the tire holding device 110, compressed air is supplied from a position around the axis Ax of the lower rim 20 to the inside of the tire TR located between the lower rim 20 and the upper rim 30 via the through hole 193a of the base portion 193.

In the tire holding device 110, when the tire TR is held between the lower rim 20 and the upper rim 30, the holder 150 and the recessed portion 160a of the connecting portion 160 are placed on top of each other. Therefore, the tire holding device 110 prevents misalignment between the lower ring 20 and the upper ring 30 due to aging, and ensures mechanical concentricity between the lower ring 20 and the upper ring 30. Additionally, it is possible to position the holder 150 and the cylindrical part 161 on top of each other by moving of the upper ring 30 near the lower ring 20 in the axial direction Yes.

<Third performance>

The third embodiment of the subject invention will be described in accordance with Figure 9.

The structure of the tire holding device 210 in this embodiment is basically the same as the structure of the first embodiment, except that the holder and the connecting part are provided at positions that deviate from the Ax axis. Other configurations are similar to those of the first version.

As shown in Fig. 9 , the tire holding device 210 includes a holder 250 and a connecting part 260 .

The holder 250 is located on the upper ring 30 and protrudes towards the lower ring 20. In this embodiment, the holder 250 has a columnar shape extending along the axis Ax. The holder 250 is placed in a position where the columnar cylindrical axis deviates from the axis Ax in the radial direction Dr.

The connecting part 260 is located on the lower ring 20 and has a recessed part 260a which is detachably connected to the holder 250.

In this embodiment, the coupling portion 260 includes a cylindrical portion 261 that projects toward the upper rim 30 and has an inner peripheral surface extending along the axis Ax, and the inner peripheral surface defines a recessed portion 260a. The cylindrical part 261 is located so that it deviates from the axis Ax in the radial direction Dr at a position that coincides with the columnar axis of the holder 250.

Accordingly, if the upper rim 30 moves close to the lower rim 20, the tire holding device 210 is configured so that the holder 250 and the recessed portion 260a are placed on top of each other.

In the tire holding device 210, compressed air is supplied from a position coinciding with the axis Ax of the lower rim 20 to the inside of the tire TR located between the lower rim 20 and the upper rim 30, through the through hole 293a of the base portion 293.

In the tire holding device 210, when the tire TR is held between the lower rim 20 and the upper rim 30, the holder 250 and the recessed portion 260a of the connecting portion 260 are placed on top of each other. Therefore, the tire holder 210 prevents the misalignment between the lower rim 20 and the upper rim 30 due to wear, and mechanical concentricity between the lower rim 20 and the upper rim 30 is ensured. In addition, in the tire holder 210, it is possible to install a holder 250 into the cylindrical part 261 by moving the upper ring 30 near the lower ring 20 in the direction of the Da axis.

<Fourth performance>

A fourth embodiment according to the present invention will be described in accordance with Figure 10.

The structure of the tire holding device 310 according to this embodiment is basically the same as the structure of the first example embodiment, with the fact that a greater number of holders and connecting parts are located at positions that deviate from the Ax axis. Other configurations are similar to those of the first version.

As shown in Figure 10, the tire holding device 310 includes two holders 350 and two connecting parts 360.

Each holder 350 is located on the upper ring 30 and protrudes towards the lower ring 20. In this embodiment, each holder 350 has a columnar shape extending along the axis Ax. The corresponding holders 350 are located in positions where the columnar cylindrical axes are significantly offset to be on mutually opposite sides in the radial direction Dr relative to the axis Ax.

Each coupling part 360 is located on the lower ring 20 and has a recessed part 360a which is detachably connected to the facing holder 350.

In this embodiment, each connecting portion 360 projects toward the upper rim 30 and includes a cylindrical portion 361 having an inner circumferential surface extending along the Ax axis, and each inner circumferential surface defines a recessed portion 360a. The two cylindrical parts 361 are placed in positions that are offset so that they are on mutually opposite sides in the radial direction Dr with respect to the axis Ax. Each cylindrical part 361 is located in a position that coincides with the axis of the pole of the opposite holder 350.

Accordingly, if the upper rim 30 is moved to the vicinity of the lower rim 20, the tire holding device 310 is configured so that each holder 350 and the recessed portion 360a are placed on top of each other.

In the tire holding device 310, compressed air is supplied from a position coinciding with the axis Ax of the lower rim 20 to the inside of the tire TR located between the lower rim 20 and the upper rim 30 through the through hole 393a of the base portion 393.

In this embodiment, since the two sets of the holder 350 and the connecting parts 360 are facing each other, placed at positions that are offset so that they are on mutually opposite sides in the radial direction Dr, concentricity in the offset direction can also be achieved .

In this embodiment, there are two sets of holders 350 and connecting pieces 360 facing each other. As an example of modification, three or more sets can be used. For example, in the case where three sets are used, if the holders and connecting parts are placed every 120° in the peripheral direction Dc around the axis Ax, it is also possible to achieve concentricity in the peripheral direction Dc. In the case where four sets are used, if the holders and connecting parts are placed at every 90° in the peripheral direction Dc around the axis Ax, it is also possible to achieve concentricity in the peripheral direction Dc.

In the tire holding device 310, when the tire TR is held between the lower rim 20 and the upper rim 30, the holders 350 and 360a indented parts for the connecting parts 360 are placed on top of each other. Therefore, the tire holder 310 prevents misalignment between the lower rim 20 and the upper rim 30 due to aging, and mechanical concentricity between the lower rim 20 and the upper rim 30 can be ensured. In addition, in the tire holder 310, it is possible to set one on the second holder 350 and the cylindrical part 361 by moving the upper ring 30 in the immediate vicinity of the lower ring 20 in the direction of the Da axis.

<Fifth performance>

The fifth embodiment of the subject invention will be described in accordance with Figure 11.

The structure of the tire holding device 410 in the present embodiment is basically the same as the structure of the first embodiment, except that the recessed portion is a hole formed in the lower rim and the base portion. Other configurations are similar to those of the first version.

As shown in Fig. 11, the tire holding device 410 includes a holder 450 and a connecting part 460.

The holder 450 is located on the upper ring 30 and protrudes towards the lower ring 20. In this embodiment, the holder 450 has a columnar shape extending along the axis Ax. The holder 450 is located in a position where the columnar cylindrical axis coincides with the axis Ax.

The connecting part 460 is located on the lower ring 20 and is detachably connected to the holder 450. The lower ring 20 is open to the upper ring 30 and has a cylindrical opening extending from the upper surface of the lower ring 20 towards the base part 493 along the axis Ax. This cylindrical opening defines a recessed portion 460a which is a connecting portion 460. The recessed portion 460a is located at a position where the cylindrical axis of the opening coincides with the axis Ax. In this embodiment, the recessed portion 460a extends not only to the lower rim 20 but also to the interior of the base portion 493.

Therefore, if the upper rim 30 moves close to the lower rim 20, the tire holding device 410 is configured such that the holder 450 and the recessed portion 460a are placed on top of each other.

In the tire holding device 410, compressed air is supplied from a position around the axis Ax of the lower rim 20 to the inside of the tire TR located between the lower rim 20 and the upper rim 30 through the through hole 493a of the base portion 493.

The cylindrical opening defining the recessed portion 460a can only be placed on the lower ring 20, and in the case where a longer opening is required, the opening can penetrate the lower ring 20 so as to extend toward the inside of the base portion 493.

Additionally, in the embodiment described above, as an example of modification, the holder 450 and the recessed portion 460a may be placed at positions that deviate from the axis Ax. As another example of modification, two sets of holders 450 and recessed portions 460a facing each other may be provided, or three or more sets thereof may be provided in the peripheral direction Dc, such that the holder and recessed portion of each set are placed on opposite sides in the radial direction Dr.

In another example of modification, the holder 450 can be placed on the lower ring 20 and the recessed part 460a can be placed on the upper ring 30. In this case, the upper ring 30 has a cylindrical opening that is open to the lower ring 20 and extends from the lower surface of the upper ring 30, towards the drive shaft 42 along the axis Ax.

In the tire holding device 410, when the tire TR is held between the lower rim 20 and the upper rim 30, the holder 450 and the recessed portion 460a of the mounting portion 460 are placed on top of each other. Therefore, the tire holding device 410 prevents misalignment between the lower rim 20 and the upper rim 30 due to aging, and mechanical concentricity between the lower rim 20 and the upper rim 30 can be ensured. In addition, in the tire holding device 410, it is possible to place the holder 450 and the retracted part 460a on top of each other by moving the upper ring 30 in close proximity to the lower ring 20 in the direction of the Da axis.

<Sixth performance>

The sixth embodiment of the subject invention will be described in accordance with figure 12 and 13.

[0070] The structure of the tire holding device 510 in this embodiment is basically the same as the structure of the first embodiment, except that the tapered part and the claw part of the regulating part are placed upside down. Other configurations are similar to those of the first version.

The regulation part 170 in this embodiment has an upper box 171, a lower box 172, and a lifting/lowering element 173 which has a larger number of claw parts 173a. Each claw portion 173 has an inner surface extending in the axial direction Da along the drive shaft 42 .

Each of the upper box 171, the lower box 172 and the lifting/lowering member 173 has an approximately rotating body shape with the axis Ax as the rotation axis. The control part 170 is located in the drive shaft 42, so that each axis of rotation of the upper box 171, the lower box 172, and the lifting/lowering element 173 is coaxial with the drive shaft 42. The lower box 172 includes a tapered portion 172a, which has a tapered inner peripheral surface. in which the diameter gradually decreases downwards, to in the upper part.

In the open state in Fig. 12, if the compressed air is introduced from the compressor COM3 of the factory plant into the sealing part 171b through the air supply hole 171a of the upper box 171, the lifting/lowering member 173 is lowered along the axial direction Yes, and the claw parts 173a are pressed externally by means of the narrowed part 172a. The pressed claw parts 173a are bent inward in the radial direction Dr, as shown in Fig. 13, the inner peripheral surfaces clamp the penetrating drive shaft 42, and it is possible to regulate the movement of the drive shaft 42 in the axial direction Da.

In the tire holding device 510, since the movement of the upper hoop 30 in the axial direction Da can be regulated, even when internal leakage of the cylinder is generated due to aging due to sealing wear or the like, it is possible to prevent the width of the hoop from expanding from a predetermined value.

<Seventh performance>

The seventh embodiment of the subject invention will be described in accordance with Figure 14.

The structure of the tire holding device 610 in this embodiment is basically the same as the structure of the first embodiment, except that no regulation part is provided. Other configurations are similar to those of the first version.

As shown in Fig. 14, the tire holding device 610 includes a lower ring 20 that supports the lower side of the tire TR, an upper ring 30 that supports the upper part of the tire TR, a tire gripping part 40, a holder 50, and a connecting part 60.

In the tire holding device 610, when the tire TR is held between the lower rim 20 and the upper rim 30, since the holder 50 and the recessed portion 60a of the connecting portion 60 are placed on top of each other, the tire holding device 610 prevents misalignment between the lower rim 20 and from the upper rim 30 due to aging, and mechanical concentricity is ensured between the lower rim 20 and the upper rim 30. Accordingly, even when the tire holding device 610 is used for a long time, the tire holding device 610 prevents the lack of concentricity of the retained tire TR and can maintain the quality of TR rubber.

<Eighth performance>

The eighth embodiment of the subject invention will be described in accordance with Figure 15.

The structure of the tire holding device 710 in this embodiment is basically the same as the structure of the first embodiment, except that the holder and the connecting part are not provided. Other configurations are similar to those of the first version.

As shown in Fig. 15, the tire holding device 710 includes a lower ring 20 which supports the lower side of the tire TR, an upper ring 30 which supports the upper part of the tire TR, a tire gripping part 40, and a regulating part 70.

In the tire holding device 710, since the movement of the upper hoop 30 in the axial direction Da can be regulated, even when internal leakage of the cylinder occurs due to aging caused by seal wear or the like, it is possible to prevent the hoop from expanding from a predetermined value. Therefore, even when the tire holding device 710 is used for a long time, the tire holding device 710 can ensure the accuracy of the rim holding position and can maintain the quality of the tire TR.

Some of the embodiments of the subject invention are described here. However, the embodiments are shown by way of example and are not intended to limit the scope of the invention. These embodiments may be implemented in various other forms, and various omissions, substitutions and modifications may be made within the scope which does not limit the scope of the invention. If these embodiments and their modifications are included in the scope and essence of the invention, the embodiments and modifications are included in the invention described in the claims and its equivalent scope.

In the tire cooling device described above, natural air cooling is performed. However, as an example of modification, forced cooling can be performed.

For example, a tire cooling device includes a rotating part using a bearing or the like and a high-speed rotating motor on the base part. In this case, the cooling tire holder rotates the tire TR held by the tire holder around the axis of the tire TR at high speeds to perform forced cooling.

Additionally, the tire cooling device may include an air blowing portion such as a compressor or blower. In this case, the tire cooling device blows air onto the tire TR held by the tire holding device to perform forced cooling.

In the embodiment described above, the holder and the recessed part are connected to each other by moving the hoop close to each other. However, as an example of a modification, a rounded surface or a tapered surface is provided at the top of each bearing shaft and recessed portion, and even when the holder and recessed portion are slightly misaligned, the holder and recessed portion can be in a mutually coaxial position by moving the holder and recessed portion close to each other. each other.

In the embodiment described above, the cylinder moves the drive shaft back and forth using hydraulic pressure. Any fluid can be used as long as the drive shaft can be moved back and forth by fluid pressure.

In the embodiment described above, both the holder and the recessed part of the connecting part have the shape of a column. However, both the holder and the recessed part can be of any shape if it is a column shape and, for example, they can have the shape of a triangular prism or the shape of a quadrangular prism.

In the embodiments described above, the lifting/lowering element is raised and lowered by pressure fluid technology using the fluid inside the upper box or lower box in the control section. A rod extending outward from the top of the box or out from the bottom of the box is mounted on the lifter/lowerer, and it is possible to mechanically raise and lower the lifter/lowerer by pushing and pulling the rod on the outside of the box.

In the embodiments described above, the axial motion of the drive shaft is regulated by pressing the claw parts using a tapered part. However, as an example of a modification, the drive shaft can be positioned inwardly in the radial direction Dr by a dividing ring that is divided in the circumferential direction Dc so as to regulate the axial movement of the drive shaft.

In the embodiment described above, the tire holding device holds the tire. However, the tire holder can hold more tires. In the case where multiple tires are held, the lower hoops, upper hoops, tire holding parts or the like are symmetrically positioned vertically with respect to the base part, or the lower hoops, upper hoops, tire holding parts or the like are positioned horizontally, and the tire holding device can hold a large number of tires. In addition, the tire holding device can be combined, and the tire holding device in which the lower rings, upper rings, tire holding parts or the like are symmetrically placed vertically with respect to the base part, can be placed horizontally.

Industrial applicability

Even when the tire holding device of the present invention is used for a long time, it is possible to maintain the quality of the tire.

List of reference marks

1: tire cooling device

10: tire holding device

20: lower hoop

20a: passing hole

30: upper hoop

40: rubber grip part

41: cylinder

42: drive shaft

50: holder

60: connecting part

60a: indented part

60b: inner peripheral surface

61: cylindrical part

70: regulatory part

71: upper box

71a: claw part

71s: inner peripheral surface

72: lower box

72a: air inlet

72b: impermeable part

72c: sealing part

73: part for lifting / lowering

73a: narrowed part

73b: sealing part

73c: sealing part

92: air supply pipe

93: basic part

93a: through hole

94: carrier

95: frame

110: tire holding device

150: holder

160: connecting part

160a: indented part

161: cylindrical part

170: regulatory part

171: upper box

171a: air inlet

171b: impermeable part

172: lower box

172a: narrowed part

173: part for lifting / lowering

173a: claw part

193: basic part

193a: through hole

210: tire holding device

250: holder

260: connecting part

260a: indented part

261: cylindrical part

293: basic part

293a: through hole

310: tire holding device

350: holder

360: connecting part

360a: indented part

361: cylindrical part

393: basic part

393a: through hole

410: tire holding device

450: holder

460: installation part

460a: indented part

493: basic part

493a: through hole

510: tire holding device

610: tire holding device

710: tire holding device

COM1: compressor

COM2: compressor

COM3: compressor

TR: tire

Claims (5)

1. A device for holding a tire, characterized in that it includes: a first hoop capable of supporting one side of the tire in the widthwise direction; a second ring that can support the other side of the tire in the width direction; a tire gripping portion including a drive shaft mounted on the second rim and a cylinder that moves the drive shaft back and forth by fluid pressure and grips the tire so that the second rim moves toward and away from the first rim; a holder which is provided either on the first ring or on the second ring and protrudes towards the second ring; and a connecting part which is provided on the second ring and has a recessed part which is detachably mounted on the holder. 2. A tire holding device according to claim 1, characterized in that the holder has a shape extending along the axis of the drive shaft, and wherein the connecting portion includes a tubular portion projecting toward one rim and having an inner peripheral surface extending along axes, and the inner circumferential surface defines the indented part. 3. Device for holding a tire in accordance with patent claim 1 or 2, characterized in that it further contains: a regulating part that can regulate the axial movement of the second ring. 4. Device for holding a tire, characterized by the fact that it contains: a first hoop capable of supporting one side of the tire in the widthwise direction; a second ring that can support the other side of the tire in the width direction; a tire gripping portion including a drive shaft mounted on the second rim and a cylinder that moves the drive shaft back and forth by fluid pressure and grips the tire so that the second rim moves toward or away from the first rim; and a regulating part that can regulate the axial movement of the second ring. 5. A tire holding device according to claim 4, characterized in that the regulating part connects the outer rim of the drive shaft to regulate the axial movement of the drive shaft.