CN217456885U - Sponge storage box - Google Patents

Abstract

The utility model provides a sponge receiver can help the stable manufacturing of the belt sponge tire of high quality. The sponge storage box (72) is provided with: a cylindrical winding core (102) around which a sponge material (M) is wound on the outer peripheral surface; a shaft portion (104) that is located inside the winding core (102) and rotatably supports the winding core (102); a regulating member (106) that is located outside the winding core (102) and that regulates the sponge material (M) wound around the winding core (102); and a fixing frame (108) that fixes the regulating member (106) to the shaft section (104). A winding core (102) is attached to a winding device (152), and a shaft part (104) is attached to an adhering device (2).

Description

Sponge storage box

Technical Field

The utility model relates to a sponge receiver. More specifically, the present invention relates to a method for manufacturing a sponge tire having a band-shaped sponge attached to an inner circumferential surface thereof for noise reduction.

Background

A sponge-equipped tire having a belt-shaped sponge attached to an inner circumferential surface is known. In the sponge tire, road noise mainly caused by air resonance vibration (cavity resonance) is reduced.

Conventionally, a sponge is stuck to an inner peripheral surface of a tire by manual work of an operator. In order to efficiently, highly accurately and uniformly attach a sponge to the inner circumferential surface of a tire, an attaching device has been developed (for example, patent document 1).

In the adhesive sheet disclosed in patent document 1, a wound body (hereinafter, also referred to as a spiral sponge) formed by winding a sponge material including a band-shaped sponge in a spiral shape is directly provided on a sponge holding frame. The sponge holding frame is disposed inside the tire, and the sponge is adhered to the inner peripheral surface of the tire while the sponge material is pulled out from the spiral sponge.

Patent document 1: japanese patent No. 4746421

The shape of the sponge is set according to the specification of the tire. The attaching device is required to be capable of attaching sponges of various shapes to a tire.

When the length and thickness of the sponge to be adhered are increased, the volume of the spiral sponge wound with the sponge is increased. Depending on the size, the spiral sponge cannot be provided in the sponge holding frame.

The sponge holding frame is disposed inside the tire through the bead seat hole of the tire. There is also a limit to the increase in size of the sponge holding frame.

The sponge is an elastomer. In order to hold the sponge material as a spiral sponge, some means is required to restrain the spiral sponge.

When manufacturing sponge tires of various specifications, an operator is in a state of needing manual work. There is still a problem to be solved in order to efficiently, highly accurately and uniformly attach a sponge to the inner circumferential surface of a tire.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sponge storage case that can contribute to stable manufacturing of high-quality belted sponge tires.

The utility model discloses an aspect's sponge receiver is used in the take-up device that will contain the sponge material of banded sponge to wind into the vortex and will the sponge pastes the device of pasting in the inner peripheral surface of tire to accomodate the sponge material, it has: a cylindrical winding core around which the sponge material is wound on an outer circumferential surface; a shaft portion that is positioned inside the winding core and rotatably supports the winding core; a restriction member that is located outside the winding core and restricts the sponge material wound around the winding core; and a fixing frame for fixing the regulating member to the shaft portion. The winding core is mounted on the winding device, and the shaft portion is mounted on the pasting device.

Preferably, in the sponge storage case, the winding core includes: an outer cylinder that constitutes the outer peripheral surface; an inner cylinder located inside the outer cylinder; and an annular disk-shaped support plate for supporting the outer cylinder and the inner cylinder and for attaching to the winding device. The outer cylinder is provided with a slit for sandwiching an end of the sponge material.

Preferably, in the sponge housing case, the shaft portion includes: a shaft body fixed to the attachment device; and a bearing portion located between the shaft portion main body and the winding core.

Preferably, in the sponge storage case, the sponge material in a compressed state is wound around the winding core.

Preferably, in the sponge housing case, the sponge material is made of a sponge having a surface to be stuck to the tire as an adhesive surface and a release paper disposed on the adhesive surface.

In the sponge storage case, the sponge is preferably wound around the winding core with the sponge on the side of the winding core.

According to the utility model discloses, can obtain the sponge receiver that can help the stable manufacturing of high-quality area sponge tire.

Drawings

Fig. 1 is a cross-sectional view showing an example of a tire with sponge.

Fig. 2 is a cross-sectional view showing an example of the sponge before being stuck.

Fig. 3 is a front view showing an example of the sponge attaching apparatus.

Fig. 4 is a side view of the sponge applicator.

Figure 5 is a side view of the adhesive member.

Fig. 6 is a side view of the sponge receiving case.

Fig. 7 is a sectional view of the sponge receiving case.

Fig. 8 is a side view showing an example of the sponge winding device.

Fig. 9 is a front view of the sponge winding device.

Fig. 10 is a front view of the sponge winding device.

Fig. 11 is a side view of the sponge winding device.

Fig. 12 is a side view for explaining a method of winding the sponge.

Fig. 13 is a side view for explaining a method of winding the sponge.

Fig. 14 is a side view for explaining a method of winding the sponge.

Fig. 15 is a side view illustrating a method of winding the sponge.

Fig. 16 is a side view of a sponge receiving case that receives sponge material.

Fig. 17 is a front view of the sponge applicator.

Fig. 18 is a front view of the sponge applicator.

Description of the reference symbols

2: a sponge sticking device; 8: an adhesive member; 66: a sponge holding frame; 72: a sponge storage box; 102: a winding core; 104: a shaft portion; 106: a regulating member; 108: a fixed frame; 110: an outer cylinder; 112: an inner barrel; 114: a support plate; 116: a break (slit); 118: mounting holes for core 102; 120: a shaft body of the shaft 104; 122: a bearing portion of the shaft portion 104; 152: a sponge winding device; 154: a mounting member; 156: a compression member; 158: an installation part; 160: a rotating machine; 162: a restraint section; 172: mounting a pin; 176: a rotating shaft of the rotating machine 160; 184: a pressing member; 186: a support mechanism; 188: a roller for pressing the member 184; 194: a cylinder of the support mechanism 186; 202: a fixed shaft of the sponge holding frame 66; ST: a tire with sponge; t: a tire; NT: a tread inner surface (an inner circumferential surface of the tire T); s: a sponge; sm: a body of sponge S; sa: bonding surface of sponge S; m: a sponge material; p: stripping paper; y: a release agent removal zone.

Detailed Description

Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the accompanying drawings as appropriate.

[ tire with sponge ]

Fig. 1 shows an example of a sponge tire ST obtained by a method for manufacturing a sponge tire according to an embodiment of the present invention. Fig. 1 shows a part of a meridian section of a sponge tire ST. In fig. 1, the sponge tire ST is assembled to the rim R. In fig. 1, a chain line CL indicates an equatorial plane.

The sponge tire ST includes a tire T and a sponge S.

The tire T has elements such as a tread, a sidewall, a bead, a carcass, a belt, and an inner liner. The tire T is in contact with the road surface in the tread. The inner liner constitutes the inner peripheral surface of the tire T. As the elements of the tire T, these elements are general elements, and the description thereof is omitted.

The sponge S is adhered to the inner circumferential surface of the tire T. The sponge S of the sponge tire ST is located radially inside the tread. The sponge S is located on the equatorial plane. Of the inner circumferential surface of the tire T, a portion of the tread on the outer side is also referred to as a tread inner surface NT. In this sponge-equipped tire ST, the sponge S is stuck to the tread inner surface NT.

The sponge S is in the shape of a strip. In the sponge tire ST, the sponge S extends in the circumferential direction. The body Sm of the sponge S absorbs and relaxes resonance sound energy (vibration energy) generated in the tire cavity by its vibration-proof property and sound-absorbing property, and suppresses cavity resonance. Thereby, road noise is reduced.

Examples of the main body Sm of the sponge S include a sponge-like porous structure, for example, a mesh-like structure in which a sponge itself having open cells formed by foaming rubber or synthetic resin is integrally connected by being intertwined with animal fibers, plant fibers, or synthetic fibers. The "porous structure" includes not only a structure having interconnected cells but also a structure having isolated cells.

In this sponge-equipped tire ST, as the main body Sm of the sponge S, a synthetic resin sponge such as ether-based polyurethane sponge, ester-based polyurethane sponge, polyethylene sponge, or the like is preferably used; rubber sponges such as chloroprene rubber sponge (CR sponge), ethylene propylene rubber sponge (EDPM sponge), nitrile rubber sponge (NBR sponge).

In the sponge-equipped tire ST, deformation and recovery are repeated as in the case of a tire not provided with the sponge S. Since the sponge S is stuck to the tread inner surface NT, the sponge S can be prevented from being peeled off from the tread inner surface NT.

Although not described in detail, for example, a green tire (tire T in an unvulcanized state, also referred to as a green tire) is pressurized and heated in a cavity constituted by a mold and a bladder, thereby obtaining the tire T. In order to take out the tire T from the cavity, a mold release agent such as silicone oil is used. A release agent adheres to the inner circumferential surface of the tire T after vulcanization molding. The release agent affects the adhesion of the sponge S to the tread inner surface NT.

When the sponge S is stuck to the inner peripheral surface of the tire T, it is preferable to form a release agent removal region from which the release agent is removed by buffing, laser irradiation, or the like, and stick the sponge S to the release agent removal region. Thereby, the sponge S is reliably adhered to the inner circumferential surface of the tire T.

In the sponge-equipped tire ST of fig. 1, the tread inner surface NT is buffed in advance in the circumferential direction to form a release agent removal region Y from which the release agent is removed, and the sponge S is stuck to the release agent removal region Y.

In the sponge-fitted tire ST, from the viewpoint of being able to reliably adhere the sponge S to the inner circumferential surface of the tire T, it is preferable that one surface of the sponge S is an adhesive surface Sa on which the adhesive a is disposed. In this case, a double-sided pressure-sensitive adhesive tape is preferably used as the adhesive a. The main body Sm of the sponge S is bonded to the inner circumferential surface of the tire T via the adhesive a. The sponge S includes a main body Sm and an adhesive a disposed on one surface of the main body Sm. One surface of the sponge S is an adhesive surface Sa made of the adhesive a.

[ sponge Material ]

Fig. 2 shows a state of the sponge S before being attached to the tire T. From the viewpoint of protecting the adhesive surface Sa forming one surface of the sponge S, the adhesive surface Sa is covered with the release paper P.

In the present disclosure, the sponge S having the adhesive surface Sa covered with the release paper P is the sponge material M. The sponge material M includes a band-shaped sponge S and a release paper P covering an adhesive surface Sa forming one surface of the sponge S. In other words, the sponge material M is made of a sponge S having a surface adhered to the tire T as an adhesive surface Sa and a release paper P disposed on the adhesive surface Sa.

The length of the sponge material M is set in consideration of the sticking length of each 1 strip of the tire T. When the sponge S is attached to the inner circumferential surface of the tire T, a sponge material M whose length is adjusted to a length necessary for attachment is prepared.

[ method for producing tire with sponge ST ]

The method for manufacturing the sponge-attached tire ST will be described by taking as an example a case where the sponge S is attached to the tire T having the release agent removed area Y formed thereon.

In this manufacturing method, a wound body of the sponge M (hereinafter, also referred to as a spiral sponge SP) is prepared, which is formed by winding the sponge M in a spiral shape. The sponge S is stuck to the inner peripheral surface of the tire T while the sponge material M is pulled out from the spiral sponge SP.

[ sponge sticking device ]

An outline of the sponge attaching device 2 for attaching the sponge S to the tread inner surface NT while pulling out the sponge M from the spiral sponge SP will be described with reference to fig. 3 and 4. The manufacturing apparatus used in this manufacturing method has a sponge attaching apparatus 2 (hereinafter referred to as an attaching apparatus 2).

Fig. 3 is a front view of the applicator 2. The left-right direction of the paper of fig. 3 corresponds to the axial direction of the tire T. Fig. 4 is a side view of the applicator 2. The direction perpendicular to the paper of fig. 4 corresponds to the axial direction of the tire T.

The applicator 2 includes a holding/rotating member 4, a position adjuster 6, and an adhesive member 8. The holding rotator 4 holds the tire T rotatably in the standing state. The position adjuster 6 supports the adhesive member 8 and adjusts the position of the adhesive member 8. The sticking tool 8 sticks a sponge S to the inner surface NT of the tread of the tire T held by the holding tool 4 and rotated.

The holding rotator 4 includes a support mechanism 10, a positioning mechanism 12, and a pressing mechanism 14. The support mechanism 10 supports the tire T. The support mechanism 10 includes a pair of support rollers 16 arranged at a distance from each other and on which the tire T is placed. The positioning mechanism 12 has a pair of side surface support bodies 18 disposed to face the side surfaces of the tire T held by the support mechanism 10. The pair of side support bodies 18 sandwich the tire T from both sides. The pressing mechanism 14 presses the tire T held by the support mechanism 10 from above.

In the sticking apparatus 2, the supporting mechanism 10, the positioning mechanism 12, and the pressing mechanism 14 are attached to a framework-shaped frame 22, and the framework-shaped frame 22 is configured by joining left and right side frames 20, which are rectangular in shape and are composed of vertical frame pieces and horizontal frame pieces, by horizontal connecting frame pieces.

In the attaching device 2, the tire T is put between the left and right side support bodies 18, and the tire T is taken out from between the left and right side support bodies 18.

In the support mechanism 10, the pair of support rollers 16 are pivotally supported by the side frames 20, respectively, so as to be rotatable. The one support roller 16 is coupled to a drive motor 24 via a known drive coupling mechanism using a sprocket, an endless belt, or the like. The tire T is rotated by the driving of the drive motor 24.

In the positioning mechanism 12, each of the pair of side support bodies 18 has a support body main portion 26 formed in a rectangular shape. The support main portion 26 is supported to be movable in the axial direction by a pair of upper and lower guides 28 extending in the axial direction of the tire T between the left and right side frames 20. The left and right support main portions 26 are configured to be able to approach or separate from each other by a left and right opening/closing mechanism, not shown. Thus, the position of the tire T placed on the support mechanism 10 is matched with the position of the tire T when the sponge S is attached.

A plurality of holding rollers 30 are pivotally supported by the side support 18 to rotatably hold the tire T. Each of the holding rollers 30 is attached to the opposing surface of the support main portion 26 so as to abut on the maximum width position of the tire T.

The pressing mechanism 14 includes a cylinder 32 supported via a mounting fitting at an upper end of the frame 22. The cylinder 32 has a rod 34 extending downward, and a pressing roller 36 is pivotally attached to an end of the rod 34 via a roller holder. The tire T is pressed from above toward the backup roller 16 by the extending operation of the cylinder 32. The bonding apparatus 2 can reliably rotate the tire T at a predetermined rotational speed without positional deviation or speed unevenness.

The position adjuster 6 can move the height adjusting table 38 up and down according to the size of the tire T held by the holding rotator 4, and can adjust the position of the adhesive member 8 to a height position at which the adhesive member 8 can be inserted into the tire inner cavity through the bead seat hole H and the adhesive member 8 can be removed from the tire inner cavity through the bead seat hole H.

The position adjusting member 6 has a support member 40 and a height adjusting member 42.

The support member 40 supports the adhesive member 8. The support 40 has a traverse mechanism 44 and an up-down moving mechanism 46.

The traverse mechanism 44 moves the adhesive patch 8 in the axial direction of the tire T to insert the adhesive patch 8 into the tire inner cavity through the bead seat hole H of the tire T and to remove the adhesive patch 8 from the tire inner cavity through the bead seat hole H of the tire T. The up-down moving mechanism 46 moves the adhesive member 8 inserted into the tire cavity in the radial direction of the tire T.

The height adjuster 42 supports the support member 40, and adjusts the height position of the adhesive member 8 supported by the support member 40 to match the size of the tire T by moving the support member 40 up and down. The height adjuster 42 has the height adjusting table 38 and a longitudinal guide 48.

The vertical guide 48 is disposed on a support base 50 rising from the platen of the frame 22 and extends vertically. The height adjusting table 38 is guided by a longitudinal guide 48 so as to be movable up and down. Although not shown, the height adjuster 42 includes an upper and lower linear driving unit that vertically moves the height adjusting base 38. In the pasting device 2, the upper and lower linear driving units have ball screw mechanisms. The upper and lower linear driving portions include: a vertical screw shaft, both ends of which are pivotally supported by the support base 50; and a nut portion attached to the height adjustment table 38 and screwed to the screw shaft. A lifting motor attached to the support base 50 is connected to one end of the screw shaft.

In the support 40, the traverse mechanism 44 includes a traverse guide 52, a traverse table 54, and a traverse linear drive unit 56. The lateral guide portion 52 is disposed on the height adjusting table 38. The lateral movement table 54 is guided by the lateral guide portion 52 so as to be movable in the axial direction of the tire T. The lateral linear drive unit 56 moves the lateral movement stage 54 between the rear standby position Qr and the front advance position Qf. In the sticking apparatus 2, the lateral linear driving section 56 is a rodless cylinder, and a piston section that moves between one end and the other end thereof is connected to the lateral moving table 54 via an actuator.

In the standby position Qr, the adhesive member 8 stands by outside the tire cavity. In the standby state, the tire T is put into the holding rotor 4, the tire T is taken out from the holding rotor 4, and the spiral sponge SP is set to the sticking tool 8. At the forward position Qf, the spiral sponge SP is disposed in the tire cavity so that the center line of the width of the sponge S coincides with the equatorial plane of the tire T.

The vertical movement mechanism 46 includes a vertical guide 58, a vertically movable body 60, and an upper and lower linear drive 62. The vertical guide portion 58 is disposed on a support stand 64 provided upright from the horizontal movement stand 54, and extends vertically. The vertically movable body 60 is guided by the vertical guide portion 58 so as to be movable vertically. The lifting body 60 extends in the axial direction of the tire T. The adhesive material 8 is held at the front end of the lifting body 60. The vertical linear driving unit 62 moves the vertically movable body 60 vertically. In the pasting device 2, the upper and lower linear driving units 62 are cylinders. The upper and lower linear driving portions 62 move the adhesive material 8 held at the tip of the elevating body 60 between an insertion height position for inserting the adhesive material into the tire cavity and an adhesion height position of the sponge S.

Figure 5 shows an adhesive member 8. Fig. 5 shows a state where the sponge S is stuck to the inner peripheral surface of the tire T. The direction perpendicular to the paper of fig. 5 corresponds to the axial direction of the tire T.

The adhesive member 8 has a sponge holding frame 66, a guide mechanism 68, and an adhesive mechanism 70. A sponge storage case 72 described later is attached to the sponge holding frame 66. The sponge housing case 72 houses a sponge material M. The guide mechanism 68 pulls out the sponge material M from the sponge housing case 72, and guides the sponge S to the tread inner surface NT. The attaching mechanism 70 attaches the sponge S to the tread inner surface NT.

The sponge holding frame 66 is attached to the front end of the elevating body 60 via an attachment plate 74. The sponge holding frame 66 has a container shape in which an annular peripheral frame 76 holding the sponge housing case 72 is provided around a bottom plate 78. A stopper 80 is provided at a part of the annular peripheral frame 76, and a guide 82 for guiding the sponge M is provided at the stopper 80. The sponge material M stored in the sponge housing case 72 passes through the guide portion 82. Although not described in detail, the width of the guide portion 82 is set so that the sponge M can smoothly pass through the guide portion 82.

The guide mechanism 68 has a peeling roller 84, a winding roller 86, and a guide roller 88. The peeling roller 84 and the guide roller 88 are disposed on the lower end side of the guide portion 82. The winding roller 86 is disposed near the guide portion 82. The peeling roller 84, the winding roller 86, and the guide roller 88 are rotatably supported by the mounting plate 74.

The peeling roller 84 peels the release paper P from the sponge M passing through the guide portion 82. Thereby, the adhesive surface Sa is exposed, and only the sponge S appears.

The winding roller 86 is adjacent to the peeling roller 84, and winds the peeling paper P peeled from the sponge material M by the peeling roller 84. The take-up roller 86 is coupled to a drive pulley 90 via a belt. The winding roller 86 is rotated by driving a motor, not shown, to rotate the drive pulley 90.

The guide roller 88 guides the sponge S toward the tread inner surface NT with the adhesive surface Sa as the outer side. A flange 92 for preventing positional displacement of the sponge S is provided on the outer periphery of the guide roller 88.

The pasting mechanism 70 has a pasting roller 94. The adhering roller 94 presses and adheres the sponge S guided by the guide roller 88 to the tread inner surface NT. The application roller 94 is pivotally supported at a lower end of a rod 98 of a cylinder 96 fixed to the mounting plate 74 via a roller holder 100 so as to be rotatable. The outer peripheral surface of the pasting roller 94 is made of sponge which is easily elastically deformed. The application roller 94 presses the sponge S against the tread inner surface NT by surface contact.

[ sponge storage box ]

As described above, the sponge housing case 72 according to the embodiment of the present invention is attached to the sponge holding frame 66 of the sticking apparatus 2. The sponge storage case 72 will be described with reference to fig. 6 and 7. The direction perpendicular to the paper of fig. 6 corresponds to the axial direction of the tire T. In fig. 6, the front side of the paper surface is the front side of the sponge housing case 72. The left-right direction of the paper of fig. 7 corresponds to the axial direction of the tire T. In fig. 7, the left side of the drawing is the front side of the sponge storage case 72.

The sponge housing case 72 houses the sponge material M. The sponge storage case 72 is used in the winding device described later and the sticking device 2 described above. The sponge housing case 72 is also a component of the winding device and the sticking device 2.

The sponge housing case 72 includes a winding core 102, a shaft portion 104, a regulating member 106, and a fixing frame 108.

Core 102 has a cylindrical shape. Sponge material M is wound around the outer circumferential surface of winding core 102. The sponge material M is wound in a spiral shape to constitute a spiral sponge SP. The sponge material M is stored as a spiral sponge SP in the sponge storage case 72.

Winding core 102 includes outer cylinder 110, inner cylinder 112 positioned inside outer cylinder 110, and support plate 114 supporting outer cylinder 110 and inner cylinder 112. Outer cylinder 110 forms the outer peripheral surface of winding core 102. Inner cylinder 112 forms the inner peripheral surface of winding core 102. The support plate 114 has an annular disk shape. The outer cylinder 110 is fixed to the outer edge of the support plate 114. The outer cylinder 110 extends from the outer edge of the support plate 114 to the front side. An inner cylinder 112 is fixed to an inner edge of the support plate 114. The inner cylinder 112 extends from the inner edge of the support plate 114 toward the front side.

In the sponge receiving case 72, the outer cylinder 110 has a stopper 116 formed in a part thereof. The interruption is a slit.

Sponge M is wound around the outer peripheral surface of winding core 102, and the end of sponge M is pinched by slit 116. Since the sponge M is stably held by the winding core 102, the sponge M is smoothly wound. From this viewpoint, it is preferable that the slits 116 for sandwiching the end portions of the sponge M are provided in the outer cylinder 110.

The support plate 114 is provided with 2 mounting holes 118 penetrating the support plate 114. These mounting holes 118 are used for mounting to a winding device described later.

Shaft portion 104 is located inside winding core 102. Shaft 104 rotatably supports core 102. Shaft 104 is fitted into inner cylinder 112 of winding core 102.

Shaft portion 104 includes a shaft portion main body 120 and a bearing portion 122. Bearing portion 122 is located between shaft main body 120 and core 102. The sponge housing case 72 is configured such that the winding core 102 rotates about the shaft body 120. The bearing portion 122 of the sponge housing case 72 includes 2 bearings 124.

In the sponge housing case 72, the shaft main body 120 of the shaft 104 includes a main body portion 126 and a lid portion 128. A step is formed on the outer peripheral surface of the main body 126, and 2 bearings 124 are attached to the step. Spacers 130 are disposed between the 2 bearings 124, and the 2 bearings 124 are disposed at a constant interval. The lid 128 is fixed to the body 126 by bolts 132, and the 2 bearings 124 are fixed to the shaft body 120.

Inner cylinder 112 of winding core 102 has an inner cylinder body 134 and a pressing plate 136. The inner cylinder main body 134 has a convex portion 138 protruding inward at its front end portion. When core 102 is attached to shaft 104, projection 138 is supported by bearing 124 on the front side. A pressure plate 136 is attached to the back end of the inner cylinder main body 134, and the back bearing 124 is supported by the pressure plate 136. Core 102 is thereby fixed to shaft 104.

The body portion 126 of the shaft body 120 is provided with a fixing hole 140 extending from the rear end surface toward the front side. As described later, the fixing hole 140 is used for attachment to the aforementioned sticking apparatus 2.

Restriction member 106 is located outside core 102. As described above, sponge material M is wound around winding core 102. The regulating member 106 is located outside the sponge M wound around the winding core 102.

The sponge material M is an elastomer. Sponge M wound around core 102 is restored to a state before winding. However, the sponge material M comes into contact with the regulating member 106 in order to be restored. Thereby, the sponge material M is prevented from being restored.

Restriction member 106 restricts sponge M wound around winding core 102. The sponge material M is held in a state of being wound around the winding core 102, that is, as a spiral sponge SP. This sponge receiver 72 can control the size of spiral sponge SP. In the sponge housing case 72, the size of the spiral sponge SP is appropriately maintained.

The restricting member 106 of the sponge receiving case 72 is a curved plate. As long as the sponge M wound around core 102 can be restrained, for example, regulating member 106 may be formed of a bar-like member extending in the width direction of sponge M.

The fixing frame 108 fixes the regulating member 106 to the shaft portion 104. The regulating member 106 is integrated with the shaft portion 104.

The fixing frame 108 is not particularly limited in structure as long as the regulating member 106 can be fixed to the shaft portion 104. The fixing frame 108 of the sponge housing case 72 is formed of an L-shaped plate.

In the sponge housing case 72, the fixing frame 108 is attached to the shaft portion 104 at the corner portion 108c thereof. The fixing frame 108 is fixed to the body portion 126 together with the lid portion 128 of the shaft portion 104 by bolts 132. Both end portions 108e of the fixed frame 108 are attached to the end portions of the regulating member 106, respectively.

In the sponge housing case 72, a handle 142 is attached to the fixed frame 108 for easy carrying.

[ sponge winding device ]

As described above, in the method of manufacturing the sponge-equipped tire ST, the spiral sponge SP is prepared by winding the sponge material M in a spiral shape before the sponge S is attached to the inner circumferential surface of the tire T. For this preparation, a sponge winding device 152 (hereinafter referred to as a winding device) is used which winds the sponge M into a spiral shape. The sponge housing case 72 is also used in the winding device 152.

Therefore, an outline of the sponge winding device 152 according to an embodiment of the present invention will be described with reference to fig. 8 to 15. The manufacturing apparatus used in the method of manufacturing the sponge-attached tire ST includes a winding apparatus 152 in addition to the above-described sticking apparatus 2.

Fig. 8 is a side view of the winding device 152. Fig. 9 is a front view of the winding device 152. The direction perpendicular to the paper of fig. 8 corresponds to the axial direction of the tire T. In fig. 8, the front side of the paper is the front side of the winding device 152. The left-right direction of the paper of fig. 9 corresponds to the axial direction of the tire T. In fig. 9, the left side of the paper surface is the front side of the winding device 152.

The winding device 152 has a mounting member 154 and a compression member 156. The sponge receiving case 72 is attached to the attachment 154. The compressing member 156 compresses the sponge material M stored in the sponge storage case 72. The winding device 152 winds the sponge material M while compressing it.

The mounting member 154 has a mounting portion 158, a rotating machine 160, and a restraining portion 162. The mounting portion 158 is supported by a rotary machine 160. The rotary machine 160 and the restraint portion 162 are supported by a support table 168, and the support table 168 is attached to a front end of a support rod 166 extending upward from the floor 164. The floor 164, the support bar 166 and the support table 168 constitute a frame 170 of the winding device 152.

The mounting portion 158 is located on the front side of the winding device 152. The mounting portion 158 has a pair of mounting pins 172. The pair of mounting pins 172 are supported by a retaining plate 174. Each mounting pin 172 extends from the retaining plate 174 toward the front side.

In winding device 152, mounting pin 172 of mounting portion 158 is disposed so as to be insertable into mounting hole 118 of support plate 114 provided in core 102. As shown in fig. 10, mounting pin 172 of mounting member 154 passes through mounting aperture 118 of winding core 102. Thus, winding core 102 of sponge housing case 72 is attached to attachment portion 158 of attachment 154. The sponge housing case 72 is detachable from the attachment 154.

The rotary machine 160 has a rotary shaft 176. The mounting portion 158 is attached to the tip of the rotary shaft 176. When the rotary machine 160 is driven, the mounting portion 158 rotates. The rotator 160 rotates the mounting part 158.

The rotary machine 160 is a pneumatic motor. The rotary machine 160 may be an electric motor, for example.

The restraint portion 162 has 2 stoppers 178 and a contact plate 180.

The 2 stoppers 178 are attached to a holding member 182 extending upward from the support table 168. The 2 stoppers 178 extend from the holding member 182 toward the front side. The 2 stoppers 178 are arranged at intervals in the vertical direction. The contact plate 180 is also attached to the holding member 182 similarly to the stopper 178, and extends from the holding member 182 toward the front side. The contact plate 180 is located between 2 stoppers 178 in the up-down direction.

As described above, in the sponge housing case 72, the shaft portion 104 rotatably supports the winding core 102, and the regulating member 106 and the fixing frame 108 are integrated with the shaft portion 104. In winding device 152, regulating member 106 is rotatable with respect to winding core 102.

In the winding device 152, as shown in fig. 11, 2 stoppers 178 and contact plates 180 are disposed so as to surround the regulating member 106 of the sponge housing case 72. The upper stopper 178 is disposed in contact with an end portion (hereinafter referred to as a first end portion 108ea) of the fixed frame 108 attached to an upper end portion of the regulating member 106. The stopper 178 on the upper side prevents the restricting member 106 from rotating counterclockwise. The lower stopper 178 is disposed in contact with an end portion (hereinafter referred to as a second end portion 108eb) of the fixed frame 108 attached to an end portion on the lower side of the regulating member 106. The stopper 178 on the lower side prevents the restricting member 106 from rotating clockwise. The contact plate 180 contacts the limiting member 106 from the outside between the upper stopper 178 and the lower stopper 178.

The limiting member 106 is restrained by the 2 stoppers 178 and the contact plate 180 (i.e., the restraining portion 162). In other words, the restricting portion 162 restricts the operation of the sponge receiving case 72 attached to the attachment portion 158. This prevents regulating member 106 from rotating with respect to core 102.

The compression member 156 is located on the front side of the support bar 166 and is supported by the support bar 166. The compression tool 156 includes a pressing member 184 and a support mechanism 186.

The pressing member 184 is located on the lower side of the sponge housing case 72. Pressing member 184 is disposed opposite winding core 102 of sponge housing case 72. The pressing member 184 includes a roller 188 and a support frame 190 rotatably supporting the roller 188. In the winding device 152, the number of rollers 188 provided in the pressing member 184 is 3. The pressing member 184 may be provided with at least 1 roller 188, and the number of rollers 188 provided in the pressing member 184 is not particularly limited.

The support mechanism 186 includes a cylinder 194 attached to the support rod 166 via a coupling member 192. The supporting frame 190 of the pressing member 184 is attached to the rod 196 of the cylinder 194.

In winding device 152, pressing member 184 approaches winding core 102 by the extending operation of cylinder 194. Although described later, the roller 188 of the pressing member 184 is thereby pushed against the sponge M. In this winding device 152, the pressing member 184 is separated from the winding core 102 by the contraction operation of the cylinder 194. As shown in fig. 10, the pressing member 184 reciprocates between the standby position Pw and the contact position Pc. Support mechanism 186 supports pressing member 184 so that the position thereof with respect to core 102 can be changed.

In the winding device 152, the cylinder 194 is an air cylinder. The cylinder 194 may be a hydraulic cylinder, for example.

Next, a method of winding the sponge M according to an embodiment of the present invention will be described based on the operation of the winding device 152. This winding method forms part of the manufacturing method of the sponge-equipped tire ST.

The winding method comprises the following steps: (1) a step of mounting the sponge housing case 72 to the winding device 152 (hereinafter referred to as a mounting step); (2) a step of setting an end of sponge M on winding core 102 (hereinafter referred to as a setting step); and (3) a step of winding the sponge material M around the core 102 by rotating the core 102 (hereinafter referred to as a winding step). This mounting step is also referred to as a first mounting step in the method for manufacturing the sponge-equipped tire ST.

In the mounting step, as shown in fig. 11, the sponge housing case 72 is mounted on the winding device 152. Core 102 is attached to attachment portion 158, and regulating member 106 is restricted by restriction portion 162. Thereby, the sponge housing case 72 is fixed to the attachment 154.

Since the sponge receiving case 72 is detachable from the attachment 154, the sponge receiving case 72 can also be easily detached from the attachment 154.

In the setting process, the sponge material M is introduced into the winding device 152. As shown in fig. 12, the sponge material M passes over a guide roller 198. The sponge material M further passes between 2 guide rollers 200. Thereby, the end of sponge M is disposed near winding core 102. In this introduction, the sponge S is set to be the upper side (in other words, the release paper P is set to be the lower side) and the sponge M is introduced into the winding device 152. After the introduction, the end of the sponge material M is sandwiched between the slits 116 of the winding core 102. The end of sponge M is provided on winding core 102, and sponge M is held by winding core 102.

The size of the slit 116 is set to a size that allows the sponge S of the sponge material M to pass through the slit 116 by being gently crushed. In the applicator 2, the end of the sponge material M is pulled out from the slit 116. The size of the slit 116 is determined appropriately in consideration of the ease of insertion and removal of the end of the sponge S.

When the end of sponge M is set on winding core 102, the winding process is started.

In the winding step, core 102 is rotated, and sponge M is disposed between core 102 and pressing member 184 as shown in fig. 13. The mounting portion 158 is rotated by driving the rotary machine 160. Since core 102 is attached to attachment portion 158, core 102 is rotated by driving of rotating machine 160. Thereby, the sponge M passes between the winding core 102 and the pressing member 184.

In this winding step, when the rotary machine 160 is driven to start winding the sponge M, the supporting mechanism 186 is driven. Support mechanism 186 brings pressing member 184 positioned at standby position Pw close to core 102. When pressing member 184 reaches contact position Pc, sponge M located between pressing member 184 and core 102 is pressed toward core 102 as shown in fig. 14. Thereby, the sponge material M is compressed. In this winding apparatus 152, the supporting mechanism 186 causes the pressing member 184 to approach the winding core 102, thereby compressing the sponge M passing between the pressing member 184 and the winding core 102. Therefore, as shown in fig. 15, the sponge M in a compressed state is wound around the winding core 102.

The winding process is completed by winding the entire sponge material M around core 102. The completion of the winding process means that the sponge material M is completely stored in the sponge storage case 72. The winding step is also a step of winding the sponge material M into a spiral shape by rotating the winding core 102 and storing the sponge material M in the sponge storage case 72 (hereinafter referred to as a storage step).

Fig. 16 shows a sponge storage case 72 in which the spiral sponge SP is stored, which is obtained by the winding device 152. In the winding device 152, the sponge material M is wound around the winding core 102 a plurality of times while being compressed.

The sponge M located on the inner side is restrained by the sponge M located on the outer side thereof, and therefore, in the sponge M located on the inner side, the compressed state thereof is substantially maintained. Since the sponge M located on the outermost side is restrained by the regulating member 106, the sponge S is restored in at least a portion of the sponge M located on the outermost side, which is in contact with the regulating member 106. Therefore, the thickness of the sponge material M constituting the spiral sponge SP accommodated in the sponge accommodating case 72 is different. In the spiral sponge SP stored in the sponge storage case 72 by the winding device 152, the sponge material M in the portion in contact with the regulating member 106 is thicker than the sponge material M located inside the spiral sponge SP.

When the sponge material M is completely stored in the sponge storage case 72, that is, when the winding process is completed, the sponge storage case 72 is removed from the winding device 152. Then, the sponge S is stuck to the tread inner surface NT using the sponge housing case 72 housing the sponge M.

In the sponge housing case 72, as described above, the restriction member 106 restricts the sponge M wound around the winding core 102. Therefore, even if the sponge housing case 72 is removed from the winding device 152, the sponge material M is held in a state of being wound around the winding core 102, that is, held as the spiral sponge SP.

Next, a method of attaching the sponge S to the inner circumferential surface (specifically, the tread inner surface NT) of the tire T using the sponge housing case 72 will be described. In this attaching method, the attaching device 2 described above is used. This attaching method forms part of the manufacturing method of the sponge-equipped tire ST.

The pasting method comprises the following steps: (1) a step of mounting the sponge housing case 72 housing the sponge material M to the sticking apparatus 2 (hereinafter referred to as a mounting step); and (2) a step of attaching the sponge S to the tread inner surface NT while pulling out the sponge material M from the spiral sponge SP stored in the sponge housing case 72 (hereinafter referred to as an attaching step). This mounting step is also referred to as a second mounting step in the method for manufacturing the sponge tire ST.

In the mounting step, the sponge container 72 containing the sponge material M is mounted on the sticking device 2. In this attachment, a sponge housing case 72 is attached to the sponge holding frame 66 of the attachment device 2.

Fig. 17 shows a part of the applicator device 2. Fig. 17 shows the sponge holder frame 66 of the adhesive element 8. The left-right direction of the paper of fig. 17 corresponds to the axial direction of the tire T. In fig. 17, the left side of the drawing sheet is the front side of the sticking apparatus 2.

The attachment tool 8 of the attachment device 2 is provided with a fixing shaft 202 extending from the bottom plate 78 of the sponge holding frame 66 toward the front side. The fixing shaft 202 of the attaching device 2 is composed of a plate-shaped flange portion 202f located on the bottom plate 78 side and a main body 202m extending from the flange portion 202f to the front side. In the sticking apparatus 2, the flange portion 202f is sandwiched between the bottom plate 78 and the attachment plate 74, and the fixing shaft 202 is fixed to the sticking tool 8 by inserting the main body 202m through the through hole 78p provided in the bottom plate 78.

As described above, the fixing hole 140 is provided in the main body portion 126 of the shaft portion main body 120 constituting the shaft portion 104 of the sponge receiving case 72. In the sticking apparatus 2, as shown in fig. 18, the sponge case 72 is attached to the sponge holding frame 66 by inserting the fixing shaft 202 into the fixing hole 140.

In the sticking apparatus 2, the cross section of the body 202m of the fixing shaft 202 and the cross section of the fixing hole 140 are rectangular. Therefore, the shaft portion 104 does not rotate relative to the fixed shaft 202, and the sponge housing case 72 is held by the sponge holding frame 66. In the sticking apparatus 2, the cross-sectional shapes of the body 202m of the fixed shaft 202 and the fixing hole 140 are not particularly limited as long as the shaft portion 104 is configured not to rotate with respect to the fixed shaft 202.

As described above, in the sponge housing case 72, the regulating member 106 and the fixing frame 108 are integrated with the shaft portion 104. Therefore, in the sticking apparatus 2, the regulating member 106 does not rotate with respect to the fixed shaft 202.

In the sticking apparatus 2, as shown in fig. 5, a projection 204 projecting inward is provided on a part of the annular peripheral frame 76 of the sponge holding frame 66. The convex portion 204 is used as a mark when the sponge storage case 72 is set in the sponge holding frame 66. In the sticking apparatus 2, the convex portion 204 is disposed in the vicinity of the first end 108ea of the fixed frame 108. The fixing shaft 202 of the sponge holding frame 66 is inserted into the fixing hole 140 of the sponge housing case 72 by aligning the position of the first end 108ea of the fixing frame 108 with the projection 204, so that the restriction member 106 of the sponge housing case 72 is attached to the sponge holding frame 66 so as not to interfere with the stopper 80 of the sponge holding frame 66.

In this attaching method, when the sponge receiving case 72 is attached to the attaching device 2, the attaching step is started.

In this attaching step, first, the traverse table 54 is disposed at the standby position Qr (see fig. 3), and the adhesive material 8 is disposed outside the side support 18. In this standby state, the tire T is put into the holding rotor 4, and the tire T is set in the sticking apparatus 2.

When the tire T is set in the sticking apparatus 2, the position of the sticking tool 8 with respect to the tire T is adjusted. After the adjustment, the adhesive member 8 is introduced into the tire cavity, and the adhesion of the sponge S to the tread inner surface NT is started.

In this sticking step, as shown in fig. 5, the release paper P of the sponge material M pulled out from the sponge housing case 72 is peeled from the sponge S by the peeling roller 84 and wound around the winding roller 86. The sponge S is guided to the tread inner surface NT by the guide roller 88 with the adhesive surface Sa thereof as the outer side. The sponge S is stuck to the tread inner surface NT by the sticking roller 94.

The sponge S is attached to the tread inner surface NT while rotating the tire T. Since shaft portion 104 is fixed to fixed shaft 202 and winding core 102 rotates relative to shaft portion 104, sponge M is smoothly pulled out from sponge housing case 72 in association with the rotation of tire T.

In this attaching step, the sponge S is attached to the tread inner surface NT while the sponge M is pulled out from the sponge housing case 72. The sponge S housed in the sponge housing case 72 is entirely stuck to the tread inner surface NT, thereby obtaining the sponge-equipped tire ST shown in fig. 1.

In this sponge housing case 72, the restriction member 106 restricts the sponge material M wound around the winding core 102, and therefore the spiral sponge SP retains its shape.

Winding core 102 of sponge housing case 72 is attached to winding device 152, and shaft 104 of sponge housing case 72 is attached to attaching device 2. In the sponge housing case 72, the spiral sponge SP prepared in the winding device 152 can be directly supplied to the sticking device 2. In other words, the sponge housing case 72 housing the sponge material M is directly disposed inside the tire T.

In the winding device 152 and the winding method using the sponge housing case 72, the sponge material M in a compressed state is wound around the winding core 102. Therefore, even if the sponge material M is thick or long, the sponge material M can be stored in the sponge storage case 72, and the spiral sponge SP can maintain its shape. The sponge case 72 attached to the sponge holding frame 66 of the sticking device 2 does not change in size regardless of whether the sponge case 72 accommodates the thick sponge material M or the sponge case 72 accommodates the long sponge material M.

The sponge S is not limited to one having a rectangular cross section, and similar effects can be obtained even if the sponge S has a cross section having a trapezoidal shape, a triangular shape, a semicircular shape, a bridge shape, or the like.

In the method for manufacturing the sponge tires using the sponge housing case 72 and the winding device 152, the sponge tires ST of various specifications can be manufactured. Since most of the work from winding the sponge M to attaching the sponge S is performed by the winding device 152 and the attaching device 2, the sponge S can be attached to the inner circumferential surface of the tire T efficiently, accurately, and uniformly in this manufacturing method.

The sponge housing case 72, the sponge winding device 152, the winding method, and the method for manufacturing the tire with sponge can contribute to stable manufacturing of the tire with sponge ST of high quality.

When the sponge material M is wound using this sponge housing case 72, the sponge material M is wound around the winding core 102 with the sponge S on the winding core 102 side. Since the release paper P presses the sponge S from the outside, the recovery of the sponge S is further suppressed. In this manufacturing method, the sponge M is wound in a state where the sponge M is sufficiently compressed. The sponge housing case 72 has a high sponge material M housing ability.

In the method for manufacturing the sponge tire ST using the sponge housing case 72 and the winding device 152, various specifications of the sponge tire ST can be manufactured.

From this viewpoint, in this manufacturing method, it is preferable to wind the sponge material M around the winding core 102 with the sponge S on the winding core 102 side.

As described above, in the winding device 152, the support mechanism 186 includes the cylinder 194, and the pressing member 184 is attached to the rod 196 of the cylinder 194.

The spiral sponge SP is formed by winding the sponge material M around the winding core 102, but when the number of windings of the sponge material M increases, the thickness of the spiral sponge SP increases.

Therefore, the force acting on the spiral sponge SP between the winding core 102 and the pressing member 184 becomes large. When an excessive force acts on the sponge material M, damage such as a crack may occur in the sponge S.

However, in the winding device 152, the thickness of the spiral sponge SP increases, and the pressure in the cylinder 194 is reduced when the pressure reaches a certain value. In the winding device 152, the pressure in the cylinder 194 is maintained so as not to exceed a certain pressure. Since cylinder 194 is contracted by the decompression, pressing member 184 is separated from winding core 102. In winding apparatus 152, the position of pressing member 184 relative to core 102 varies depending on the thickness of sponge M located between pressing member 184 and core 102.

In the winding device 152, the force applied to the sponge M is appropriately maintained so as not to apply an excessive force to the sponge M positioned between the pressing member 184 and the winding core 102. The winding device 152 can wind the sponge material M without causing damage such as a crack in the sponge S.

As described above, in the winding device 152, the support mechanism 186 includes the cylinder 194. The pressure in the cylinder 194 is appropriately adjusted in consideration of the material, shape, and the like of the sponge S. In the winding device 152, the pressure in the cylinder 194 is not particularly limited as long as the sponge material M can be wound without damaging the sponge S. The pressure in the cylinder 194 is set to, for example, 0.1MPa to 10 MPa.

As described above, in the winding device 152, the winding core 102 is rotated by the rotating machine 160, and the sponge material M is wound. At this time, the pressing member 184 is pushed against the sponge M. In the winding device 152, the sponge material M is wound around the winding core 102 while being stretched. This reduces the thickness of the sponge M, and therefore, the sponge M can be tightly wound around the winding core 102. This improves the storage capacity of the sponge material M of the sponge storage case 72. When the torque of the rotary machine 160 is increased, the storage capacity of the sponge M is increased.

The torque of the rotary machine 160 affects the tension generated in the sponge material M. If the tension generated in the sponge material M is too high, damage such as a crack may be generated in the sponge S.

In the winding device 152, in order to avoid damage to the sponge S, the torque of the rotary machine 160 is appropriately adjusted in consideration of the strength of the sponge S.

This winding device 152 can effectively improve the storage capacity of the sponge material M that the sponge storage case 72 has. The winding device 152 can store the sponge material M having various shapes and sizes in the sponge storage case 72. In other words, the sponge housing case 72 does not need to be prepared in accordance with the shape and size of the sponge material M to be housed.

In the method for manufacturing the sponge tires using the sponge housing case 72 and the winding device 152, the sponge tires ST of various specifications can be manufactured.

As described above, according to the present invention, a sponge storage case that can contribute to stable manufacturing of high-quality sponge-equipped tires can be obtained.

Industrial applicability

The sponge housing case described above can be applied to the manufacture of various tires.

Claims (6)

1. A sponge housing case for housing a sponge material, the sponge material being used in a winding device for winding the sponge material including a band-shaped sponge in a spiral shape and a sticking device for sticking the sponge to an inner peripheral surface of a tire,

this sponge receiver has:

a cylindrical winding core around which the sponge material is wound on an outer peripheral surface;

a shaft portion that is positioned inside the winding core and rotatably supports the winding core;

a restriction member that is located outside the winding core and restricts the sponge material wound around the winding core; and

a fixing frame for fixing the regulating member to the shaft portion,

the winding core is mounted on the winding device, and the shaft portion is mounted on the pasting device.

2. The sponge storage case of claim 1,

the winding core is provided with:

an outer cylinder that constitutes the outer peripheral surface;

an inner cylinder located inside the outer cylinder;

an annular disk-shaped support plate for supporting the outer cylinder and the inner cylinder and for attaching to the winding device,

the outer cylinder is provided with a slit for sandwiching an end of the sponge material.

3. The sponge storage case of claim 1 or 2,

the shaft portion has:

a shaft body fixed to the attachment device; and

a bearing portion located between the shaft portion main body and the winding core.

4. The sponge storage case according to claim 1 or 2,

the sponge material is wound in a compressed state on the winding core.

5. The sponge storage case of claim 1 or 2,

the sponge material is composed of a sponge having a surface adhered to the tire as an adhesive surface and a release paper disposed on the adhesive surface.

6. The sponge storage case of claim 5,

the sponge material is wound around the winding core with the sponge on the side of the winding core.

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