JPH05200911A - Buffing device for retreaded tire - Google Patents

Abstract

PURPOSE:To easily and fully automatically perform positioning and support of an old tire and also to improve working environment. CONSTITUTION:Rubber substance of tread of an abraded old tire is chipped by a buffing rotor 20. A buffing device is provided with a pair of vertical tire supporters 7, 8 for horizontally and freely rotatably supporting the old tire, the rotating and driving means of the upper tire supporter 7, a hydraulic cylinder device for elevating/lowering the lower tire supporter 8, a back and forth moving reciprocating base 21 equipped with the elevating/lowering base of the buffing rotor 20 and an old tire introducing means 74 equipped with centering positioning rollers 84, 85 on an old tire introducing plate 75. Furthermore the buffing device is constituted of buffing powder carry-out conveyors 97, 98, an auxiliary buffing rotor 48 for buffing a tire shoulder part, shielding panels 1A, 1B, 1C, 1D, 1E for covering the whole outside of the device and an opening/ closing door or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buffing device for buffing a ground contact surface of a worn tire (hereinafter referred to as an old tire) to remove rubber material to obtain a buffed tire (hereinafter referred to as a stand tire). It is about.

[0002]

2. Description of the Related Art In the process of manufacturing a recycled tire by buffing and removing the rubber material of the tread portion, which is the ground contact surface of an old tire, and attaching a new tread to a buffed stand tire, A device for moving a rotating buff rotating body (peeling-off buff called peeling) in the meridian direction from one shoulder portion to the other shoulder portion while rotating about a horizontal axis to buff the ground contact surface. Are known (for example, see Japanese Patent Laid-Open No. 2-258329).

[0003]

In the above prior art, since the old tire is supported in a standing state, it is difficult to fit the supporting rim in the tire bead portion, and the effect cannot be expected even if other structural mechanisms are automated. Also, there is a problem that the work environment is poor due to scattering of buff powder, sand dust, etc., and the work efficiency is reduced when the entire buff device is enclosed.

The present invention has been made in view of the above situation, and an object thereof is to facilitate positioning and support of old tires, enable full automation, and improve working environment. A buffing device for a retreaded tire is provided.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention is a device for buffing a ground contact surface of a worn tire with a buff rotating body, and a pair of upper and lower tire supports that rotatably support an old tire in a horizontal position, and a tire support of the tire support. A rotary drive means, and a buff rotary body provided laterally of the tire so as to be capable of advancing and retracting in the horizontal direction with respect to the ground contact surface and vertically movable.
It is characterized by comprising old tire loading means and buffing powder unloading means.

Further, the present invention is characterized in that a pair of upper and lower auxiliary buff rotating bodies for buffing the tire shoulder portion are disposed laterally of the tire support. Furthermore, the present invention is characterized in that the entire outside is covered with a shielding panel, and at least a tire entrance / exit opening / closing door, a maintenance door, and the like are provided.

[0007]

According to the present invention, the old tire is centered and placed horizontally on the lower tire support by the old tire loading means in a horizontal position, and the vertical tire is rotated by both upper and lower supports. Is rotatably supported by. Then, while the tire support and the buff rotating body are rotationally started, the buff rotating body moves forward and abuts against the old tire contact surface, and the rubber material of the tread portion and the shoulder portion is moved by moving the buff rotating body up and down and forward and backward. Is scraped off.

The buffed powder such as the rubber powder scraped off in this manner is carried out of the shielding panel by the carrying-out means,
The base tire from which the rubber material has been scraped off is unconstrained by the upper and lower tire supports, is supported by the base tire unloading device, and is carried out from the lower tire support. It should be noted that the rubber material of the shoulder portion of the old tire can be efficiently buffed by scraping it off with the auxiliary buff rotating body. Further, buffing powder, sand dust, etc. generated during the buffing work are prevented from scattering to the outside by the shielding panel and each door.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 and FIG. 2 show the entire device without the shield panel 1, 2 is a pillar, 3 and 4 are vertical vertical frames, 5 and 6 are vertical horizontal frames, and these are frame-structured, front and rear, left and right. As shown in FIGS. 13 to 17, the shielding panels 1A, 1B, 1C, 1D and 1E are attached to the upper surface and the upper surface respectively so that buff powder, sand dust and the like are not scattered.

Numerals 7 and 8 are a pair of upper and lower tire supports, and upper and lower support beams 9 and 10 installed between the front and rear of the upper and lower horizontal frames 5 and 6 between the left side and the middle pillars 2 and 2, in the center in the front-rear direction. The upper tire support 7 is provided in a position
The bearing tube 12 fixed vertically to the upper support beam 9 and the support shaft 11
The chain wheel 14 is composed of an upper tire holding rim 13 fixed to the lower end and is attached to the upper end of the rotary support shaft 11 so that it can be rotated by a driving means (not shown).

The lower tire support 8 includes a rotary support shaft 15
A bearing cylinder 16 fixed vertically to the lower support beam 10, a tire holding lower rim 17 connected to the upper end of the rotary support shaft 15,
It comprises a support member 18 for rotatably supporting the rim 17 and a cylinder device 19 for supporting the support member 18 and moving up and down. The rim 17 moves up and down to press the old tire T against the upper rim 13. It is designed to be held tightly.

Reference numeral 20 denotes a scraping-type buff rotary member called a rasp, which is located on the right side of the tire supports 7 and 8 so as to be positioned in a vertical plane including the support shaft axis C, a carriage 21, a lift 22, It is attached to the upper vertical frame 3 and the upper and lower support beams 9 and 10 via a support bearing 23, a rotary shaft 24, a mounting frame 25, and the like. As shown in FIG. 7, the mounting frame 25 has horizontal and parallel guide rails 26A and 26B provided on the front surfaces of upper and lower members 25A and 25B, and a screw shaft 27 is provided on the front surface between the left and right vertical members 25C and 25D.
Is rotatably mounted via a bearing 28, a moving nut 29 is screwed onto the screw shaft 27, and a transmission pulley is provided at the right end.
A transmission belt 33 is hung between the drive pulley 32 and the drive pulley 32 fixed to the output shaft 31A of the reciprocating drive motor 31 attached to the rear surface of the vertical member 25D. 34A and 34B are mounting brackets for the upper vertical frame 3
It is fixed to the with bolts and nuts.

As shown in FIGS. 2 and 3, the carriage 21 has a U-shape when viewed from the front, and is located on the upper or lower surfaces of the upper and lower members 21A and 21B at the left and right ends and is a rearward sliding guide.
35A and 35B are fixed, and the guides 35A and 35B are mounting frame
25 is slidably engaged with guide rails 26A, 26B, the moving nut 29 is connected to the rear surface of the vertical member 21C, and an elevator 22 is attached between the upper and lower members 21A, 21B.

That is, the lift table 22 is composed of the upper and lower members 21 of the carriage 21.
Guide bars 36A and 36B that are erected parallel to each other between A and 21B
Is guided to the upper and lower members 21 by being screwed into the lifting table 22.
It is adapted to move up and down by the rotation of the lifting drive screw shaft 37 pivotally supported by A and 21B. A transmission pulley 38 is fixed to the upper end of the screw shaft 37, and a transmission belt is provided between the pulley 38 and a drive pulley 41 fixed to an output shaft 40 of a lift drive motor 39 mounted on the carriage 21. 42 is wrapped around.

A motor 43 for driving a buff rotating body is attached to the right end surface of the lifting table 22, and a drive pulley 45 fixed to an output shaft 44 of the motor 43 and an end portion of the rotating shaft 24 are fixed. A transmission belt 47 is wound around the transmission pulley 46. In FIGS. 1, 8 and 9, reference numerals 48 and 49 denote a pair of upper and lower auxiliary buff rotating bodies, which are made of a rotating grindstone and have respective rotating shafts 50 and 5 respectively.
1 is directly connected to the output shafts of the drive motors 52 and 53, and is also supported by the motor casings 52A and 53A via the bearing tubes 54 and 55. The motor casings 52A and 53A are vertically mounted in the auxiliary buff rotary member mounting frame 56 and are swingably mounted in the vertical direction via the horizontal shafts 57 and 58.

Swing levers 59, 60 are fixed to the front outer ends of the horizontal shafts 57, 58, respectively, and the other end of the levers 59, 60 has a piston rod outer end 63 of a swing air cylinder 61, 62. , 6
4 are connected, and the base ends of both cylinders 61 and 62 are swingably attached to the front surface of the frame 56 by horizontal pins 65 and 66. Further, sliding guides 67, 68 are fixed to the upper and lower ends of the frame 56 at the front, rear, left and right ends.

The frame 56 is attached to the guide rail 72 fixed to the lower surface of the suspension beam 71 fixed to the vertical frame 3 and the upper support beam 9 via brackets 69 and 70. It is suspended via 68, and can move forward and backward without interfering with the buff rotating body 20 with respect to the tire T. In the center of the frame 56, an outer diameter measuring device 73 of a base tire, which is composed of rollers, is provided so as to project on the old tire T side so as to come into contact with the tire ground contact surface.

Reference numeral 74 is an old tire loading means, which is shown in FIGS.
As shown in FIG. 12, a tire supporting input plate 75 having a substantially U-shape, which is disposed outside the front surfaces of the supports 7 and 8, and the input plates.
Hook-shaped rotating arm fixed to both left and right ends of base 75
And a horizontal rotation shaft 77 to which the base ends of both arms 76 are fixed,
A bearing 78 that rotatably and horizontally supports both ends of 77 and is fixed to the outer surface of the lower horizontal frame 6, a transmission pinion 79 fixed to the center of the shaft 77 in the longitudinal direction, and the lower horizontal frame. Drive hydraulic cylinder 80 fixed vertically to 6
A rack 82 fixed to the outer end of the piston rod 81 of the cylinder 80 and meshing with the pinion 79;
Guide rails 83 and tire centering positioning rollers 84,85
Etc.

The guide rails 83 are formed by a pair of right and left channel members, and are fixed to the facing surfaces of the columns 2 and 2 on the front left and center, and are directed from the outside of the columns 2 toward the support 8. Guide rollers 86 attached to the rear surfaces of the central portions of the left and right ends of the input plate 75 extend and engage with each other. One end of each of the tire centering positioning rollers 84, 85 penetrates two guide elongated holes 87 provided in parallel with the tire loading plate 75 in the vertical direction, and is fixed to a moving base 88. The moving base 88 is fitted onto two guide bars 89 mounted on the back surface of the tire throwing plate 75 in parallel with the guide elongated holes 87, and is screwed onto an adjusting screw shaft 90 so that the screw shaft 90
Is rotated to move up and down with the guide bar 89 as a guide, and the position can be freely adjusted according to the size of the old tire T.

A transmission pulley is attached to the lower end of the screw shaft 90.
91 is fixed, and the transmission pulley 91 is driven via a pulley 93 and a transmission belt 94 by a drive motor 92 attached to the back surface of the tire loading plate 75. Below the tire support 8, a buff powder collection hopper 95 is provided, a buff powder carry-out conveyor 96 is arranged immediately below the hopper 95, and conveyors 97, 98 are provided following the conveyor 96. The buff powder is thrown out of the shield panel 1 (see FIGS. 1, 2, 13, 14, and 17). Further, on the opposite side of the old tire loading means 74, a base tire unloading means 99 (specific configuration is omitted) similar to the loading means 74 having no centering adjustment function is provided.

As shown in FIGS. 13 and 14, the front shielding panel 1A is provided with an old tire loading opening 100 and a vertically sliding opening / closing door 101, and a maintenance opening 102 provided on the right side thereof. A single-door gannon door 103 is provided in the. Further, as shown in FIGS. 14 and 15, the rear surface shield panel 1B is provided with a base tire take-out opening 104,
A vertical sliding door 105 is provided.

As shown in FIGS. 14 and 16, the left side shield panel 1C is provided with a maintenance opening 106 and is a double-door double door.
107 is provided so as to be openable and closable, and an opening 108 for the buff powder carry-out conveyor 97 is provided on the right side shielding panel 1D (see FIG. 17). In addition, 109 is a buff powder recovery container. In the above embodiment, when the old tire T to be buffed is placed on the input plate 75 of the old tire input means 74 and the tire centering positioning rollers 84, 85, as shown in FIG. By this, the input plate 75 pivotally moves from the state shown by the solid line to the state shown by the chain lines 751, 752, 753,
The old tire T is horizontally placed and is positioned on the lower rim 17 so that the axis center thereof coincides with the axis center C of the tire support 8, and the bead portion of the old tire T is fitted to the lower rim 17. To be done. At this time, with the opening / closing door 101 of the opening 100 open, the input plate 75, the old tire T, etc. do not interfere.

When the old tire T is fitted to the lower rim 17 in this manner, the lower rim 17 is raised by the cylinder device 19 and the upper bead of the old tire T is attached to the upper rim 13 of the upper tire support 7. The old tires T are firmly supported by both rims 13 and 17 by fitting the parts. Then, by operating the hydraulic cylinder 80, the loading plate 75 from which the old tire T has been removed is moved along the guide rail 83 in the reverse order to the above-mentioned shielding panel 1A.
The door 101 is closed at the same time as it exits to the outside and enters the standby state.

Subsequently, the old tire T is rotated by driving the tire support 7, and the buff rotating body 20 and the auxiliary buff rotating body 4 are rotated.
The drive motors 43, 52, 53 of 8, 49 are started, and the drive motors 31, 39 of the carriage 21, the elevator 22 and the mounting frame 56 are started.
The forward / backward drive motor and the swinging air cylinders 61, 62 of the auxiliary buff rotating bodies 48, 49 are operated by program control, and the tread portion of the old tire T is mainly supported by the buff rotating body 20 and the shoulder portion is mainly assisted. The rubber material is scraped off by the buff rotating bodies 48 and 49, respectively.

Then, the scraped buff powder and the like are carried out to the outside of the shielding panel 1D by the buff powder carry-out conveyors 96 to 98 and put into the buff powder recovery container 109. In this way, when the buffing work of the old tire T is completed, each buff rotating body
While the rotation of 20,48,49 is stopped, it returns to the standby position, the opening / closing door 105 of the rear shielding panel 1B is opened, and the lower rim 17 of the lower tire support 8 is lowered by the cylinder device 19, The bead of the buffed base tire T1 comes off from the upper rim 13.

Next, the stand tire take-out means 99 is set to the stand tire T1.
While entering below and receiving the base tire T1, it is taken out of the rear shielding panel 1B, the opening / closing door 105 is closed, and one cycle of the old tire buffing work is completed. The present invention is not limited to the above embodiment, and for example, the auxiliary buff rotating body 4
By omitting 8,49, the rubber material of the tread portion and shoulder portion of the old tire can be scraped off only by the buff rotating body 20, and the moving means of the buff rotating body 20, the old tire loading means, etc. can be appropriately changed in design. be able to.

According to the above embodiment, the buff rotating body 20
Uses a scrapable rasp, the scraped rubber becomes powder and is easy to carry out and process, and automation is possible, and the centering for mounting on the tire support 8 is Old tire loading means with out-positioning function
It can be done automatically by 74 and is extremely efficient.

[0028]

As described above, the present invention is a device for buffing a ground contact surface of a worn tire with a buff rotating body, and a pair of upper and lower tire supports for rotatably supporting an old tire in a horizontal position. Body, a rotation driving means for the tire support, a buff rotating body provided laterally of the tire so as to be capable of advancing and retreating in the horizontal direction with respect to the ground contact surface and vertically movable, old tire loading means and buff powder unloading means. Therefore, it is easy to position and support the bead part of the old tire by the tire support and the workability is good, and the automation of the device is easy, and the work efficiency is improved. be able to.

Further, the present invention is characterized in that a pair of upper and lower auxiliary buff rotating bodies for buffing the tire shoulder portion are provided on the side of the tire support member. The work is easy and accurate, the work efficiency can be doubled, and a good quality tire can be obtained. Furthermore, the present invention is characterized in that the entire outside is covered with a shielding panel, and at least a tire door opening / closing door, a maintenance door, etc. are provided.
Dust scattering is completely prevented and the working environment can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a state where a shield panel is removed according to an embodiment of the present invention.

FIG. 2 is a front view in which the auxiliary buff rotating body and old tire loading means of FIG. 1 are omitted.

FIG. 3 is an enlarged front view showing a buff rotating body and its supporting means.

FIG. 4 is a partially omitted plan view of FIG.

FIG. 5 is a right side view of FIG.

FIG. 6 is an enlarged plan view of a mounting frame.

FIG. 7 is a front view of FIG.

FIG. 8 is an enlarged front view of an auxiliary buff rotating body and its supporting means.

FIG. 9 is a right side view of FIG.

FIG. 10 is a left side view of an old tire charging means.

11 is a plan view of FIG.

FIG. 12 is a partially omitted plan view showing a state where the tire input plate is moved between the tire supports.

FIG. 13 is a schematic front view showing the appearance of the entire apparatus.

FIG. 14 is a plan view of FIG.

FIG. 15 is a rear view of FIG.

16 is a left side view of FIG.

FIG. 17 is a right side view of FIG.

[Explanation of symbols]

 1 Shield panel 1A Shield panel 1B Shield panel 1C Shield panel 1D Shield panel 1E Shield panel 7 Upper tire support 8 Lower tire support 20 Buff rotating body 48 Auxiliary buff rotating body 49 Auxiliary buff rotating body 74 Old tire loading means 96 buff powder Carry-out conveyor 97 Conveyor 98 Conveyor 101 Open / close door 103 Maintenance double door 105 Open / close door 107 Double door for maintenance T Old tire T1 tire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenichi Hara 3781-26 Higashiyama Nishiyama, Okuraya, Akashi City, Hyogo Prefecture (72) Inventor Toshiyuki Noda 6-3-25 Higashijiriike-cho, Nagata-ku, Kobe City, Hyogo Prefecture

Claims (3)

[Claims] 1. A device for buffing a ground contact surface of a worn tire with a buff rotating body, comprising a pair of upper and lower tire supports for rotatably supporting an old tire in a horizontal position, and rotation of the tire support. It is characterized by comprising a driving means, a buff rotating body provided laterally of the tire so as to be capable of advancing and retreating in the horizontal direction with respect to the ground contact surface and vertically movable, an old tire loading means and a buff powder unloading means. Buffing device for retreaded tires. 2. The buffing device for a retreaded tire according to claim 1, wherein a pair of upper and lower auxiliary buff rotating bodies for buffing a tire shoulder portion are arranged laterally of the tire support. 3. The entire outside is covered with a shielding panel,
The buffing device for retreaded tires according to claim 1 or 2, wherein at least an opening / closing door for tire entry / exit, a maintenance door and the like are provided.