KR101492815B1 - High-load non-pneumatic tire and method of making it - Google Patents

Abstract

The present invention relates to a method for producing a high-load non-pneumatic tire and a tire produced using the same, wherein the same can be applied to high-load vehicles and heavy equipment. The method comprises: a preparing step of preparing raw ingredients (S10); a step of coating an adhesive on a wheel to adhere the raw ingredients on the wheel (S20); a step of winding a sheet-shaped rubber sheet on the wheel coated with the adhesive (S30); a step of heating and plasticizing the wheel on which the rubber sheet is wound (S40); and a step of inserting and molding the plasticized wheel in a mold (S50). The high-load non-pneumatic tire includes: a wheel (10) coupled with an axle of a vehicle or heavy equipment; and a solid-type tire (20) integrally formed on the outer circumferential surface of the wheel (10).

Description

TECHNICAL FIELD [0001] The present invention relates to a high-load non-airtight tire,

TECHNICAL FIELD The present invention relates to a method of manufacturing a high-load unconfined tire and a tire using the same, and a method of manufacturing a tire applicable to heavy-duty vehicles and heavy equipment, and a tire using the same.

Background Art [0002] In general, a tire is a pneumatic tire which is filled only with air and serves as a buffer, and a non-articulated tire which is composed of synthetic resin such as rubber without charging air.

Here, since the pneumatic tire is buffered by the air to be filled, it is often applied to a vehicle in a lowered state because of its excellent buffering ability.

However, in the case of such pneumatic tires, there is a disadvantage that it is difficult to maintain the shape of the tire if the air is damaged by an external impact or the charged air exceeds a certain level of pressure.

Therefore, in order to overcome the drawbacks of such pneumatic tires, non-standard tires are used.

These non-public tires are applied to heavy equipment that has to withstand high loads.

However, in the case of such an unoccupied tire, there is a problem that a portion for buffering must be additionally designed because it is designed to focus only on a portion that must endure high load.

In order to overcome such a problem, Korean Patent Registration No. 10-00557510 (tire, hereinafter referred to as "Prior Art 1") and Korean Patent Publication No. 10-2011-0018527 (non-pneumatic wheel structure, 2 ") discloses non-standard tires and their structures, and discloses techniques for non-standard tires in a number of prior art documents.

However, in these prior arts, due to the characteristics of the tire manufacturing process, since the powder type material is formed by using the high temperature and high pressure mold, the force to support the load is weak, so that the damage is frequently generated when the high load is supported.

Representative problems have been pointed out, for example, breakage due to partial incision of a tire, peeling due to breakage of a bonded portion of a tire and a wheel.

Therefore, there is an urgent need to develop a high-load non-airtight tire which is resistant to a heavy load and a load.

In order to overcome the above problems, it is an object of the present invention to provide a method of manufacturing an unoccupied tire which is capable of improving the gripping force during a high load and is resistant to breakage, and a tire using the same.

In order to achieve the object of the present invention, there is provided a method for manufacturing a high-load non-airtight tire, comprising the steps of preparing a raw material for preparing a rubber sheet by processing rubber or synthetic rubber into a sheet form, (S30) of winding a rubber sheet in a sheet form onto a wheel coated with an adhesive (S30), and molding the rubber sheet wound-extruded into a mold (S50) Between the step (S30) of winding the sheet-form rubber sheet on the wheel coated with the adhesive and the step (S50) of molding the insert on the mold, the rubber of the wheel wound on the rubber sheet is softened to be processed And a step (S40) of heating the rubber sheets to increase the adhesive force between the rubber sheets so as to increase heat.

Further, in the molding step S50, the tire structure is formed by heating and pressurizing using a mold which is constituted by a pair of left and right spaced apart molds for holding the tire shape, and a pair of molds Is a method of manufacturing a high-load non-airtight tire characterized by comprising two to six sets.

A high-load non-airtight tire manufactured on the basis of such a manufacturing method comprises a wheel 10 coupled to an axle of an automobile and a heavy equipment, a wheel 10 integrally coupled to the outer circumferential surface of the wheel 10 and integrally formed on an outer circumferential surface A single tread 21 and a double tread 22 formed adjacent to the single tread 21 and a spacing groove 23 formed between the single tread 21 and the double tread 22, And the tread 20 is constituted by a cushioning hole 27 which is formed so as to be depressed. The single tread 21 and the double tread 22 are formed on the outer circumferential surface of the tire 20 so as to be sequentially arranged in the order.

The spacing grooves 23 formed between the single tread 21 and the double tread 22 and between the single tread 21 and the double tread 22 are formed in a direction of one side of the tire And a sloping surface is formed so as to be inclined toward the other side of the tire so as to face the traveling direction of the vehicle. The sloping groove 25 is formed in the outer surface of the single tread 21 and the double tread 22, The single tread 21 and the double tread 22 are prevented from being damaged by the pressure applied from the traveling direction.

A separation line 26 is formed at the center of the double tread 22 to prevent breakage of the tread due to pressure applied from the upper side due to high load. The buffering hole 27 formed to be recessed inwardly on the side portion of the buffering hole 27 is formed between one buffering hole 27 formed on one side and another buffering hole 27 adjacent to the buffering hole 27, And the position of the inner end of the buffer hole 27 formed at one side is formed such that the inner end of the buffer hole 27 formed at the other side is positioned so as to be partially overlapped with the hole 27 So that the buffering force can be improved.

The reinforcing jaws 24 are formed on the upper side of the overlapping portions of the positions of the inner end portions of the buffer holes 27 among the openings of the spacing grooves 23 and the separation lines 26 do.

According to the structure and the manufacturing method as described above, it is possible to provide a method for manufacturing a high-load non-airtight tire and a tire.

By providing the high-load unconfined tires of the present invention and the method of manufacturing the same, it is possible to improve the enforceability of the tire under high load and to provide a non-circulating tire resistant to breakage, There is an effect.

1 is a representative view of a conventional non-articulated tire.
2 is a flow chart showing a manufacturing method of the present invention.
3 is a perspective view of a high-load non-airlaid tire according to the present invention.
4 is a plan view of a high-load non-airlaid tire according to the present invention.
5 is a perspective view of a high-load non-airlaid tire according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings so that those skilled in the art can easily carry out the invention.

2 is a flow chart showing a manufacturing method of the present invention.

2, the method for manufacturing a high-load unconfined tire according to the present invention includes a preparing step (S10) of preparing a raw material, a step (S20) of applying an adhesive to a wheel for attaching a raw material to a wheel, (S30) of winding a film-shaped rubber sheet on a wheel coated with an adhesive, and a step (S50) of forming the wound-up wheel by inserting the wound wheel into a mold (S50) to manufacture a high-load non-airtight tire It will be done.

In addition, the step (S30) of winding the rubber sheet and the step (S50) of molding the wheel by inserting the wheel into the mold may further include a step (S40) of applying heat to the wheel wound with the rubber sheet and firing the same.

The preparation step S10 of preparing the raw material is a step of forming a rubber or synthetic rubber material in the form of a sheet for forming a tire portion, and a sheet of rubber material is formed so as to fit the side width of the wheel.

In order to adhere the rubber sheet, which is a sheet-like raw material manufactured in the preparing step (S10) for preparing the raw material, to the wheel, a step (S20) of applying an adhesive to the wheel is performed.

The step S20 of applying the adhesive to the wheel is to prevent the sheet-shaped raw material from being adhered to and detached from the wheel, and overcomes the problem that the tire is detached from the wheel, which is a problem of a solid type rubber of a common rubber material .

After the adhesive is applied to the wheel in step S20, a step S30 of winding up a rubber sheet for winding the rubber sheet in a sheet form on one side of the wheel coated with the adhesive is performed.

At this time, the rubber sheet is used for completing the outer diameter of the solid type tire, and it is repeatedly wound on the wheel coated with the adhesive to form a predetermined height.

Here, the rubber sheet is formed by processing rubber, urethane or the like, which is a material for forming a common tire, into a sheet form.

When the rubber sheet is repeatedly wound on the wheel as described above, the tension is maintained so that no gap is formed between the overlapped rubber sheets.

Further, after the rubber sheet is wound on the wheel, the wound state is maintained for a certain period of time so that the applied adhesive hardens.

In step S30, the wheel having the rubber sheet wound thereon is subjected to molding step S50.

At this time, the molding step S50 is a process of creating a tread and a buffer hole (see Figs. 3 to 5) on the tire holding the tire shape.

Here, the mold is made up of a plurality of parts according to the morphological characteristics of the high-load non-airtight tire provided in the present invention.

More specifically, in a step S50 of molding two pairs of molds separated from each other in left and right directions, the rubber sheet-wound tire is pressed to create a structure such as a tread and a buffer hole At the same time, pressure is applied to increase the hardness of the tire.

Between the step (S30) of winding the rubber sheet and the step (S50) of forming the rubber sheet, a step (S40) is performed in which the rubber sheet is wound around the wheel and then heated.

The firing step (S40) softens the rubber wound so as to be repeatedly overlapped on the wheel to improve the physical properties for machining, and is intended to increase the adhesive force between the rubber sheets which are spaced apart from each other by heat.

Here, in the step of sintering as described above (S40), in applying a rubber sheet for overcoming the disadvantages of the conventional method of manufacturing a tire using a powder, in order to reduce the thermal deviation of the rubber sheet in the molding step, .

It is also intended to improve the physical properties for the rapid progress of the molding process.

The sintering step S40 may be selectively applied. If the tire to be produced is of a large size, the sintering step S40 is performed between the step S30 of winding the rubber sheet and the step S50 of molding the rubber sheet. Can be added.

Through the above-described series of processes, a high-load non-airtight tire is provided.

FIG. 3 is a perspective view of a high-load non-airlaid tire according to the present invention, FIG. 4 is a top view of a high-load non-airlaired tire according to the present invention, and FIG. 5 is a perspective view of a high-load non-airlaired tire according to the present invention.

3 to 5, a method for manufacturing a high-load non-airtight tire includes a preparation step S10 for preparing a raw material, a step S20 for applying an adhesive to a wheel for attaching a raw material to the wheel, A step (S30) of winding a sheet-shaped rubber sheet on a wheel coated with an adhesive (S30), a step (S40) of applying heat to the wheel wound with the rubber sheet to heat the sintered wheel, and molding S50). The tire (10) is joined to the axle of an automobile and a heavy equipment, and a solid type tire (20) integrally formed on an outer circumferential surface of the wheel (10) ).

The wheel 10 is formed of a coupling portion coupled to an axle and a tire coupling portion to which a tire is coupled, and a detailed description thereof will be omitted.

However, in order to overcome the disadvantage that the diameter of the wheel 10 used in the present invention is increased and a plurality of tire layers are formed of a releasing material for buffering action in a normal solid type tire, A tire 20 of a single layer formed by winding a rubber resin on the tire 10 is applied.

The tire 20 integrally formed with the wheel 10 includes a single tread 21 integrally formed on an outer circumferential surface of a contact surface in contact with the road surface and a double tread 22 located adjacent to the single tread 21, And the single tread 21 and the double tread 22 are formed so as to be continuously arranged in the order of the number of times.

At this time, between the single tread 21 and the double tread 22, curved spacing grooves 23 are formed for alleviating the impact on each tread as the vehicle progresses.

The spacing groove 23, the single tread 21, and the double tread 22 are formed to be inclined toward the traveling direction of the vehicle.

More specifically, it is formed so as to be inclined from the one side of the wheel 10 coupled with the axle toward the rear of the other side, and is formed to be directed in the traveling direction of the vehicle.

The single tread 21, the double tread 22, and the spacing groove 23 are in natural contact with the road surface along the traveling direction of the vehicle, thereby alleviating the shock transmitted from the road surface, Thereby preventing breakage of the double tread 22.

In addition, the single tread 21 and the double tread 22 are formed so as to be inclined in the traveling direction to maximize the contact surface of the road surface, thereby maximizing the frictional force at the time of stopping the vehicle, and preventing slippage in the rain road or snowy road .

The single tread 21 and the double tread 22 have cutout grooves 25 formed at one side thereof to prevent the respective treads from being damaged by the pressure applied from the traveling direction of the vehicle.

In addition, the double tread 22 has a dividing line 26 formed at its center so as to prevent breakage of the tread due to pressure applied in the upward direction due to high load.

More specifically, when the pressure is applied to the double tread 22 in the upward direction, the separation line 26 is spaced apart and absorbs the impact, thereby preventing the double tread 22 from being damaged.

A reinforcing jaw 24 is further formed inside the separation line 26 formed between the spacing groove 23 formed on the outer circumferential surface of the tire and the double tread 22 formed as described above.

Here, the reinforcing jaw 24 reinforces the strength of the buffer hole 27 formed in the inner side and maximizes the buffering effect.

More specifically, the reinforcing jaw 24 is applied only to the spacing groove 23 and the separation line 26 which are open portions of the outer circumferential surface of the tire, and is formed so as to protrude from the opened outer circumferential surface, And serves to prevent the buffer hole 27 from being damaged by an external impact.

The width of the reinforcing jaws 24 is the same as the width of the space in which the plurality of buffer holes 27 located at the inner side of the tire are overlapped with each other so that the strength of the tire due to the buffer holes 27 .

Inside the tire 20 formed as described above, a plurality of buffer holes 27 are formed to mitigate the impact applied to the tire.

More specifically, it is formed so as to be recessed inward from the side surface of the tire 20.

At this time, the shape of the buffer hole 27 is formed in a circular shape in the attached drawings, but it is not limited thereto.

The buffer hole 27 is formed to have a predetermined depth inward from the side surface of the tire. The buffer hole 27 formed on one side of the tire 20 and the buffer hole 27 formed on the opposite side Be formed differently.

Here, a buffer hole 27 formed on the other side is positioned between one buffer hole 27 formed on one side surface and another buffer hole 27 adjacent to the buffer hole 27.

As described above, the plurality of buffer holes 27 are arranged in the respective chambers, thereby increasing the buffering force.

In addition, the inner end of the buffer hole 27 is formed so that the positions of the end portions of the buffer holes 27 are overlapped with each other.

More specifically, the end portions of the cushioning holes 27 formed on one side surface of the tire and a part of the end portions of the cushioning holes 27 formed on the other side are located on the same line as viewed in a plan view .

The reinforcing jaws 24 are formed so as to be equal to the widths of the overlapping portions of the respective buffer holes as described above to reinforce the impact, relief, and strength applied to the tire.

With the above-described structure, the high-load non-airtight tire of the present invention can be completed.

10: Wheel
20: Tire
21: Single tread
22: Double Tread
23: Spacer groove
24: Reinforcing jaw
25: incision groove
26: Separation line
27: buffer hole

Claims (12)

A method of manufacturing a non-public tire capable of withstanding high loads,
Preparing a raw material for preparing a rubber sheet by processing rubber or synthetic rubber into a sheet form (S10);
(S20) applying an adhesive to adhere the raw material to the wheel;
(S30) winding a rubber sheet in the form of a sheet onto a wheel coated with an adhesive;
A step (S40) of softening the rubber of the wheel wound with the rubber sheet to improve the physical properties for processing and applying heat to increase the adhesive force between the separated rubber sheets (S40);
And a step (S50) of molding the wheel wound with the rubber sheet by inserting it into the mold.
delete The method according to claim 1,
Wherein the molding step (S50) is a pair of left and right spaced apart parts, and the tire structure is formed by heating and pressing using a mold holding the tire shape.
The method of claim 3,
Wherein the pair of molds spaced apart from the left and right sides are composed of two to six sets.
In a non-articulated tire capable of withstanding high loads,
A wheel 10 coupled to an axle of an automobile and a heavy equipment;
A single tread 21 integrally formed on the outer circumferential surface of the wheel 10 and integrally formed on an outer circumferential surface in contact with the road surface, a double tread 22 formed adjacent to the single tread 21, And a tire (20) composed of a spacing groove (23) formed between the double tread (21) and the double tread (22) and a cushioning hole (27) formed to be recessed inward on the side surface portion. tire.
6. The method of claim 5,
Wherein the single tread (21) and the double tread (22) are formed continuously on the outer circumferential surface of the tire (20) in the order of the number of times.
6. The method of claim 5,
The spacing grooves 23 formed between the single tread 21 and the double tread 22 and between the single tread 21 and the double tread 22 start from one side of the tire in which the wheel to which the axle is coupled is located Wherein the inclined surface is formed so as to be inclined toward the other side of the tire so as to face the traveling direction of the vehicle.
6. The method of claim 5,
The single tread 21 and the double tread 22 have respective cutouts 25 formed on the outer circumferential surfaces thereof to prevent the single tread 21 and the double tread 22 from being damaged by the pressure applied from the traveling direction of the vehicle Wherein the tread portion is formed of a tread.
6. The method of claim 5,
And a separation line (26) is formed at the center of the double tread (22) to prevent the tread from being broken by pressure applied in the upward direction due to high load.
10. The method according to any one of claims 5 to 9,
A buffer hole 27 formed to be recessed inwardly of the side surface of the tire 20 is formed between one buffer hole 27 formed on one side and another buffer hole 27 adjacent to the buffer hole 27 Is formed repeatedly so that a buffer hole (27) formed on the other side is located.
11. The method of claim 10,
Wherein a position of an inner end of the shock absorber (27) formed on the one side is formed such that the inner end of the shock absorber (27) formed on the other side is partially overlapped.
12. The method of claim 11,
A reinforcing jaw 24 is further provided on the upper side of the overlapping portion of the position of the inner end of the buffer hole 27 among the openings of the spacing groove 23 and the separation line 26 Heavy duty heavy duty tires.

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