KR20180033020A - Apparatus for buffing recapped tires - Google Patents

Abstract

The present invention relates to a buffing apparatus for recapped tires. More specifically, the present invention relates to the buffing apparatus for recapped tires which is capable of effectively repairing and cleaning a buffed tire fabric by dividing regions from the position of a sidewall to the position of a bead portion of a tread portion-buffed tire fabric, and enabling pressure and transfer speed of a side brush by the divided regions to be controlled. The buffing apparatus according to the present invention, as a buffing apparatus for recapped tires, the buffing apparatus including the side brush for repairing and cleaning from the sidewall to the bead portion of the tread portion-buffed tire fabric, comprises: the side brush which is rotatably mounted on a front end of a brush arm; a vertical transfer unit which transfers a side arm in a vertical direction; a pressurization unit which moves the brush arm so that the side brush is pressurized onto the surface of the tire fabric; and a control unit which controls a transfer speed of the side brush transferred in a vertical direction by the vertical transfer unit and a pressure of the side brush pressurized onto the surface of the fabric by the pressurization unit.

Description

[0001] APPARATUS FOR BUFFING RECAPPED TIRES [0002]

The present invention relates to a rebuffer tire buffing apparatus, and more particularly, to a rebuffing apparatus for re-manufacturing a tire, in which a region from a sidewall of a tire fabric to which a tread portion is buried to a bead portion is divided and a pressure and a feed rate of the side brush are controlled Which can effectively repair and clean the buried tire fabric.

Ever since automobiles have emerged as the main means of transportation for human beings, tires have become the indispensable key component in supporting the weight of automobiles, delivering driving and braking forces to the road surface, and mitigating impacts from the road surface .

However, since the main material of the tire is made of natural rubber or synthetic rubber, abrasion occurs during use, and the driving force or the braking force is reduced due to such abrasion, so it is necessary to periodically change the tire.

However, in the case of disposing a tire which has reached the wear limit of the tire, since rubber, which is a main raw material of the tire, is difficult to decompose, the tire is finely cut and the wirebelt inside the tire is removed and then the rubber is recycled. There is a growing interest in recycling tires through retreading where new treads are bonded after cutting off the tread portion. In addition, there is a growing interest in global environmental pollution around the world, and it does not spare the waste tires to support the industries that use them for remanufacturing.

Remanufactured tires are manufactured through buffing, molding, vulcanizing, and the like. In this process, the buffing process is for grinding a curve strip to show the embossed state of a white sidewall or a white letter. Korean Patent Registration No. 10-0108819 Device) and Korean Patent No. 10-0572366 (a buffing machine for a reclaimed tire), a technique of automatically performing a buffing operation is disclosed.

Since the buffing process is a process of cutting a tread surface while rotating a relatively heavy tire, it is not easy to work and requires a very precise work because it affects the quality of the tire when it is over-buried or un-buffered.

Particularly, since the portion where the buffing is performed on the tire has a complicated surface such as a curved surface, it is required that the buffing machine is controlled so that accurate cutting is performed according to each position to be accurately buffered.

Korean Patent No. 10-0108819: Tire Buffing Device Korean Patent No. 10-0572366: Buffing machine for recycled tire

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a method of separating a tire from a sidewall of a tire fabric having a tread portion to a position of a bead portion, And to effectively repair and clean the buried tire fabric.

In order to accomplish the above object, the present invention provides a rebuffer tire buffing apparatus comprising: a rebounding tire buffing apparatus provided with a side brush for repairing and cleaning from a sidewall to a bead portion of a tread- Wherein the side brush is rotatably mounted on a front end of a brush arm and includes an upper conveying portion for vertically conveying the side arm and a pressing portion for moving the brush arm so that the side brush is pressed against the surface of the tire, And a control unit for controlling a conveying speed of the side brush conveyed by the upper conveying unit and a pressure of the side brush pressed by the pressing unit against the surface of the far end.

In addition, the re-manufacturing tire buffing apparatus according to the present invention may further include a horizontal transfer unit for transferring the side arm in the horizontal direction.

According to another aspect of the present invention, there is provided a rebuffing tire rebuffing apparatus according to the present invention, wherein the buffed tire fabric is divided into a plurality of regions from a bead portion to a sidewall, And the pressure is divided and controlled.

Further, in the re-manufacturing tire buffing apparatus according to the present invention, the buried tire fabric is divided into three regions from a first region to a third region from a bead portion to a sidewall, And the upper and lower conveying speeds of the side brushes and the pressurizing pressures are divided and controlled for each of the third regions.

The buffing apparatus for a tire for re-manufacturing tire according to the present invention is characterized in that the buried tire fabric designates a position at which a bead portion starts from a first point and a position away from a widest point on the side surface by a predetermined distance downward The second point is designated as the second point, the third point is designated as the position that is a predetermined distance upward from the widest point on the side face, and the fourth point is defined as the fourth point where the buffered portion and the side face meet, And a third region is divided into a second region and a third region. The third region and the fourth region are divided into a third region and a third region.

Further, the re-manufacturing tire buffing apparatus according to the present invention is characterized in that the first area and the second area are divided into areas requiring repair and cleaning, and the third area is divided into areas requiring buffing and cleaning, And the control section controls the transfer and pressurization of the side brush by making the transfer speed and pressure of the side brush in the third area larger than the first area and the second area.

Further, in the rebuffing tire for a tire according to the present invention, the controller controls the side brush to be initially contacted to the fourth point and transferred.

According to the above-described constitution, in the rebuilding tire for a tire according to the present invention, the area from the side wall of the tire in which the tread portion is buried to the position of the bead portion is divided and the pressure and the feed speed of the side brush are controlled It has an advantage that the buried tire can be effectively repaired and cleaned.

1 is a front view showing a buffing apparatus for a remanufacturing tire according to an embodiment of the present invention;
2 is a front view showing a part of a buffing apparatus for a remanufacturing tire according to an embodiment of the present invention;
3 is a view conceptually showing the transfer and pressurization of the side brush in the buffing apparatus for a remanufacturing tire according to an embodiment of the present invention
FIG. 4 is a conceptual illustration of a divided region of a tire fabric in a buffing apparatus for a remanufacturing tire according to an embodiment of the present invention

Hereinafter, a rebuffing apparatus for a re-manufacturing tire according to the present invention will be described in more detail with reference to the embodiments shown in the drawings.

2 is a front view showing a part of a rebuffing apparatus for a remanufacturing tire according to an embodiment of the present invention; Fig. 3 is a front view of the rebuffing apparatus for a re- Fig. 4 is a schematic view showing a state in which the tire fabric in the rebar tire for the remanufacturing tire according to the embodiment of the present invention, FIG. 2 is a diagram conceptually showing divided regions of a display device.

The tire buffing apparatus for a tire for re-manufacturing according to one embodiment of the present invention is for repairing and cleaning from the side wall of the tire tread T to the bead portion, And a side brush B for brushing.

Referring to the drawings, the re-manufacturing tire buffing apparatus according to one embodiment of the present invention includes a base portion 10, a tire rotation support portion 21 and 22, a brush transfer portion 30, a control portion (not shown) A side brush B and a brush arm 33 as shown in Fig.

The side brush B is configured to contact the tire T for brushing, repairing and cleaning to remove damaged parts and foreign matter on the side surface of the tire fabric, and buffing to cut a part of the side surface.

The brush arm 33 is mounted on the tip of the side brush B so as to be rotatable so that the side brush B is easily accessible to the tire tread and the side brush B is moved by the rotation of the arm . The brush arm 33 is provided with driving means for driving the side brush B and driving force transmitting means (not shown).

The base portion 10 is a structure for mounting the tire rotation support portions 21 and 22 and the brush transfer portion 30.

The pair of rotation axes 21 and 22 for supporting the tire fabric T at both sides of the tire fabric T are configured to rotate while supporting the fabric T, 22, and a drive motor for rotating the rim shaft.

The brush transfer unit 30 moves the side brush B to the tire tail T for buffing or repairing and transfers the side brush B in the vertical direction or the lateral direction during the buffing or repairing process, The side brush B is moved so that the pressure applied to the tire tongue T is regulated. Referring to the drawings, the brush conveying unit 30 includes an upper conveying unit, a horizontal conveying unit, and a pressing unit (not shown).

The upper and lower delivery portions are configured to transport the side arm in the vertical direction (V). The upper conveying unit includes a guide rail 35 extended up and down on the base unit and a conveying beam 31 supported on the guide rail 35 so as to be moved up and down along the guide rail 35 A conveyance screw 36 for conveying the conveyance beam 31 up and down by hanging the conveyance beam 31, a screw drive motor 37 for rotating the conveyance screw 36, And a transfer shaft 36a for transferring the rotational force of the transfer screw 36 to the transfer screw 36.

The horizontal transfer unit is configured to transfer the side arms in the horizontal direction (H) so as to correspond to the widths of various widths of the tire fabrics (T) having different widths. Referring to the drawing, the horizontal conveying unit includes a conveying table 32 supported by the conveying beam 31 and conveyed in a horizontal direction, and a conveying table conveying motor 34 for horizontally conveying the conveying table 32 ). The brush arm 33 is rotatably connected to the conveying table 32.

The pressing portion is configured to move the brush arm so that the side brush is pressed against the surface of the tire fabric. In the figure, the brush arm 33 is suspended from the conveying table 32 to rotate the side brush B toward or away from the tire T, thereby forming the pressing portion. The rotation R of the brush arm 33 constituting the pressing portion is controlled so that the side brush B is pressed to the tire end T at a constant pressure by using a cylinder and a valve.

The control unit (not shown) controls the operation of the tire rotation support units 21 and 22 and the brush transfer unit 30.

The present invention is characterized in that the control unit controls the conveying speeds (V ₁ , V ₂ , V ₃ ) of the side brushes to be vertically conveyed by the upper and lower conveying units and the pressure P ₁ , P ₂ , P ₃ ).

Particularly, the present invention is characterized in that the buffed tire fabric T has a plurality of regions ([X ₁ , Y ₁ ] to [X ₂ , Y ₂ ], [X ₂ , Y ₂ ] to [X _{3, Y 3], [X} 3, Y 3] ~ [X 4, Y 4]) is divided into the control section delimited area _{([X 1, Y 1]} ~ [X 2, Y 2], [ _{X 2, Y 2] ~ [} X 3, Y 3], [X 3, Y 3] ~ [X 4, Y 4]) down the conveying speed of the side brushes, for each _{(V 1, V 2, V} 3) And the pressurizing pressures (P ₁ , P ₂ , P ₃ ).

In particular, the present invention is the separated region is the first region to the third region into three regions _{([X 1, Y 1]} ~ [X 2, Y 2], [X 2, Y 2] ~ [X 3, _{Y 3], [X 3,} Y 3] ~ [X 4, Y 4]) is divided into, the control unit is separated first region to the third region _{([X 1, Y 1]} ~ [X 2, Y _{2], [X 2, Y} 2] ~ [X 3, Y 3], [X 3, Y 3] ~ [X 4, Y 4]) in the vertical feed rate (V _1, V ₂ of the side brush against each , V ₃ ) and the pressures (P ₁ , P ₂ , P ₃ ).

The three areas are classified according to the shapes of the tires, the degree of buffing, and the degree of repair. First, a position at which the bead portion of the buffed tire fabric T starts is designated as a first point ([X ₁ , Y ₁ ]) and a position apart from the widest point on the side surface by a predetermined distance downward the second point, and designated as _{([X 2, Y 2]} ), determines a position apart by a predetermined upward from the largest point of width away from the side of the third point _{([X 3, Y 3]} ) , and the buffing And the fourth point ([X ₄ , Y ₄ ]) where the part and the side meet. Accordingly, in a first point _{([X 1, Y 1]} ) and the second point _{([X 2, Y 2]} ) of the first region _{([X 1, Y 1]} ~ [X 2, Y 2]) between isolate and the second point _{([X 2, Y 2]} ) and the third point _{([X 3, Y 3]} ) the second region _{([X 2, Y 2]} ~ [X 3, Y 3]) between separated, and the third point _{([X 3, Y 3]} ) and a fourth point _{([X 4, Y 4]} ) a third region _{([X 3, Y 3]} ~ [X 4, Y 4]) .

Incidentally, the present invention is the first region _{([X 1, Y 1]} ~ [X 2, Y 2]) and the second region _{([X 2, Y 2]} ~ [X 3, Y 3]) is repaired and the third and separated by a region in which cleaning is required, the area _{([X 3, Y 3]} ~ [X 4, Y 4]) are separated by areas that require buffing and cleaning, wherein the control unit is the third region ([ _{X 3, Y 3] ~ [} X 4, Y 4]) the feed rate of the side brush (V ₃₎ and the pressing pressure (P ₃₎ of the first region in the _{([X 1, Y 1]} ~ [X 2 , Y _2]) and a second region _{([X 2, Y 2]} ~ [X 3, Y 3]) larger by more than the feed rate (V _1, V ₂₎ and the pressing pressure (P _1, P ₂₎ in the Thereby controlling the transfer and pressing of the side brush.

Further, the control unit side brush is the fourth point _{([X 4, Y 4]} ) to occur to the buffing and repair of the sides of the tire fabric (T) to ensure that the contact is transferred to the first quick control.

The buffing apparatus for remanufacturing tires described above and shown in the drawings is only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

T Tire Fabric
B side brush
10 base portion
21,22 Tire fabric rotation support (Limax)
30 Brush transfer part
31 traverse beam
32 conveyor stand
33 brush arm
34 Feeder Feed Motor
35 Guide rail
36 Feed Screw
36a transmission shaft
37 Screw-driven motors

Claims (7)

1. A buffing apparatus for a tire for remanufacturing tire equipped with a side brush for repairing and cleaning from a sidewall of a tread-buried tire fabric to a bead portion,
Wherein the side brush is rotatably mounted on a tip end of the brush arm,
An upper conveying portion for conveying the side arm in the vertical direction,
A pressing portion for moving the brush arm so that the side brush is pressed against the surface of the tire fabric,
And a control unit for controlling a conveying speed of the side brush to be vertically conveyed by the upper conveying unit and a pressure to press the side brush to the surface of the far end by the pressing unit. The method according to claim 1,
And a horizontal transfer unit for transferring the side arm in a horizontal direction. 3. The method according to claim 1 or 2,
The buried tire fabric is divided into a plurality of regions from a bead portion to a side wall,
Wherein the control unit distinguishes the vertical transfer speed of the side brush from the pressurization pressure for each of the divided areas. 3. The method according to claim 1 or 2,
The buried tire fabric is divided into three regions from a first region to a third region from a bead portion to a sidewall,
Wherein the controller divides the upper and lower conveying speeds of the side brushes and the pressurizing pressures for each of the first to third regions to control the pressurizing pressures. 5. The method of claim 4,
The buried tire fabric designates a position at which the bead portion starts from a first point, designates a second position at a position spaced a predetermined distance downward from the widest point at the side face, And a fourth point at which the buffered portion and the side face meet are designated to divide the first point and the second point into a first region and the second point and the second point are separated from each other, Wherein the third region is divided into a second region and the third region and the fourth region are divided into a third region and a third region. 6. The method of claim 5,
Wherein the first area and the second area are divided into areas requiring repair and cleaning,
The third area is divided into areas where buffing and cleaning are required.
Wherein the control unit controls the transfer and pressurization of the side brush by making the transfer speed and pressure of the side brush in the third region larger than the first region and the second region. The method according to claim 5 or 6,
Wherein the controller controls the side brush to be initially contacted and transferred to the fourth point.

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