阅读说明：本技术 轮胎胎面辊压装置、系统及控制方法 (Tire tread rolling device, system and control method ) 是由 张景辉 张晓辰 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种轮胎胎面辊压装置,包括安装架、设置于安装架上并且相互平行的第一丝杠和第二丝杠、分别设置于第一丝杠和第二丝杠上的第一螺母和第二螺母、与所述第一丝杠与第二丝杠相垂直设置的第三丝杠,设置于第三丝杠上的第三螺母、压辊组件。本发明还提供一种轮胎胎面辊压系统,包括如前所述的轮胎胎面辊压装置以及控制器。本发明还提供一种轮胎胎面辊压的控制方法,通过如前所述的轮胎胎面辊压装置予以实施。采用上述技术方案,通过设置相互平行的第一丝杠和第二丝杠能够驱动第一螺母与第二螺母以不同速度移动,从而实现压辊组件的摆转,在胎冠区域与胎肩区域的连接部分能够顺利过渡,达到较好的辊压效果。(The invention discloses a tire tread rolling device which comprises a mounting frame, a first lead screw, a second lead screw, a first nut, a second nut, a third lead screw, a third nut and a compression roller assembly, wherein the first lead screw and the second lead screw are arranged on the mounting frame and are parallel to each other, the first nut and the second nut are respectively arranged on the first lead screw and the second lead screw, the third lead screw is vertically arranged with the first lead screw and the second lead screw, and the third nut and the compression roller assembly are arranged on the third lead screw. The invention also provides a tire tread rolling system, which comprises the tire tread rolling device and a controller. The invention also provides a control method of the tire tread rolling, which is implemented by the tire tread rolling device. By adopting the technical scheme, the first screw rod and the second screw rod which are parallel to each other are arranged to drive the first nut and the second nut to move at different speeds, so that the swinging of the compression roller assembly is realized, the smooth transition can be realized at the connection part of the tire crown region and the tire shoulder region, and a better rolling effect is achieved.)

1. A tire tread rolling device is characterized in that: the press roll assembly comprises a mounting frame, a first lead screw, a second lead screw, a first nut, a second nut, a third lead screw, a third nut and a press roll assembly, wherein the first lead screw and the second lead screw are arranged on the mounting frame and are parallel to each other; the compression roller assembly is rotatably and correspondingly arranged on the first nut and the second nut through a first shaft and a second shaft; the mounting frame is mounted on the third nut; the first lead screw, the second lead screw and the third lead screw are respectively connected to power output ends of the first motor, the second motor and the third motor.

2. The tire tread rolling device of claim 1, wherein: the mounting bracket is arranged on a third sliding rail on the substrate, and the third motor is fixed on the substrate.

3. The tire tread rolling device of claim 1, wherein: the mounting frame is further provided with a first sliding rail and a second sliding rail, and the first nut and the second nut are respectively mounted on the first sliding rail and the second sliding rail.

4. The tire tread rolling device of claim 1, wherein: the compression roller assembly comprises a mounting seat, an air cylinder arranged on the mounting seat and a compression roller arranged on an air cylinder arm of the air cylinder; the mounting seat is correspondingly mounted on the first nut and the second nut through the first shaft and the second shaft.

5. Tire tread rolling device according to any one of claims 1 to 4, wherein: the compression roller assemblies are arranged in two groups in parallel, and the two groups of compression roller assemblies can move oppositely or reversely during operation.

6. A tire tread rolling system, characterized by: comprising a tyre tread rolling device according to any one of claims 1 to 5 and a controller for controlling the action of the first, second and third motors; the controller can control the first motor and the second motor to drive the first nut and the second nut to move at different speeds when the tire shoulder area is subjected to rolling operation, so that the rolling roller assembly forms a swing angle; the controller can control the third motor to drive the mounting frame to be close to or far away from the green tire.

7. The tire tread rolling system of claim 6, wherein: the first lead screw is positioned on one side of the second lead screw, which is far away from the tire blank; the moving speed of the first nut is v₁The moving speed of the second nut is v₂The moving speed of the third nut is v₃And then:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃

wherein, b₁The distance from the second screw axis to the connecting part of the shoulder area and the crown area before the roller assembly swings, b₂Is the distance between the first and second spindle axes, b₃The height of the shoulder area in the direction of the axis of the third screw, a₃The width of the shoulder area in the direction of the axis of the first screw rod is defined as alpha, and the preset swing angle of the compression roller assembly when the compression roller moves to the edge position of the side of the shoulder area far away from the crown area is defined as alpha.

8. The tire tread rolling system of claim 6, wherein: the two groups of press rollers in the press roller assembly start from the middle of the tire crown area and gradually move towards two sides for rolling, and the tire blank is in a rotating state in the rolling process.

9. A method for controlling the rolling of a tire tread, characterized by: by means of a tyre tread rolling device according to any one of claims 1 to 5, comprising:

controlling the first motor, the second motor and the third motor to drive the first nut, the second nut and the third nut to respectively drive v when the rolling operation is carried out on the tire shoulder area₁、v₂And v₃The speed of (2) is moved; v. of₁、v₂And v₃The ratio of (d) satisfies the following formula:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃

wherein, b₁The distance from the second screw axis to the connecting part of the shoulder area and the crown area before the roller assembly swings, b₂Is the distance between the first and second spindle axes, b₃The height of the shoulder area in the direction of the axis of the third screw, a₃The width of the shoulder area in the direction of the axis of the first screw rod is defined as alpha, and the preset swing angle of the compression roller assembly when the compression roller moves to the edge position of the side of the shoulder area far away from the crown area is defined as alpha.

10. A method of controlling the rolling of a tire tread as in claim 9, wherein: v is preset before rolling₁、v₂Or v₃The value of (c).

Technical Field

The invention relates to a tire tread rolling device, a system and a control method, and belongs to the technical field of tire processing machinery.

Background

In the manufacturing process of the rubber tire, after the tire body and the tire tread composite piece are molded, the tire tread needs to be rolled. The conventional rolling method is generally to roll by an independent tire shoulder press roll, for example, a tire blank press roll mechanism and a device using the same disclosed in chinese patent document CN203460451U, wherein the tire blank press roll mechanism comprises a reverse wrapping press roll mechanism, a tread press roll mechanism, and a tire shoulder press roll mechanism which are independent from each other, and the three mechanisms are vertically distributed in an upper, middle, and lower direction, and each of the mechanisms has a roller disposed at a front end, and a driving mechanism for feeding the roller to a rolling station contacting with an outer surface of a tire blank and performing a rolling operation is disposed at a rear end of the roller. However, in the existing rolling mechanism, the plurality of rollers are separated from each other and roll different regions independently, and the connecting parts between the different regions cannot be rolled sufficiently, so that uneven rolling of the tread is caused.

Disclosure of Invention

Therefore, an object of the present invention is to provide a tire tread rolling device, system and control method capable of adjusting the roll swinging angle to gradually move the roll from the crown area to the shoulder area, thereby achieving a better rolling effect.

In order to achieve the purpose, the tire tread rolling device comprises a mounting frame, a first lead screw, a second lead screw, a first nut, a second nut, a third lead screw, a third nut and a press roll assembly, wherein the first lead screw and the second lead screw are arranged on the mounting frame and are parallel to each other; the compression roller assembly is rotatably and correspondingly arranged on the first nut and the second nut through a first shaft and a second shaft; the mounting frame is mounted on the third nut; the first lead screw, the second lead screw and the third lead screw are respectively connected to power output ends of the first motor, the second motor and the third motor.

The mounting bracket is arranged on a third sliding rail on the substrate, and the third motor is fixed on the substrate.

The mounting frame is further provided with a first sliding rail and a second sliding rail, and the first nut and the second nut are respectively mounted on the first sliding rail and the second sliding rail.

The compression roller assembly comprises a mounting seat, an air cylinder arranged on the mounting seat and a compression roller arranged on an air cylinder arm of the air cylinder; the mounting seat is correspondingly mounted on the first nut and the second nut through the first shaft and the second shaft.

The compression roller assemblies are arranged in two groups in parallel, and the two groups of compression roller assemblies can move oppositely or reversely during operation.

The invention also provides a tire tread rolling system, which comprises the tire tread rolling device and a controller, wherein the controller is used for controlling the first motor, the second motor and the third motor to act; the controller can control the first motor and the second motor to drive the first nut and the second nut to move at different speeds when the tire shoulder area is subjected to rolling operation, so that the rolling roller assembly forms a swing angle; the controller can control the third motor to drive the mounting frame to be close to or far away from the green tire.

The first lead screw is positioned on one side of the second lead screw, which is far away from the tire blank; the moving speed of the first nut is v₁The moving speed of the second nut is v₂The moving speed of the third nut is v₃And then:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃

wherein, b₁The distance from the second screw axis to the connecting part of the shoulder area and the crown area before the roller assembly swings, b₂Is the distance between the first and second spindle axes, b₃The height of the shoulder area in the direction of the axis of the third screw, a₃The width of the shoulder area in the direction of the axis of the first screw rod is defined as alpha, and the preset swing angle of the compression roller assembly when the compression roller moves to the edge position of the side of the shoulder area far away from the crown area is defined as alpha.

The two groups of press rollers in the press roller assembly start from the middle of the tire crown area and gradually move towards two sides for rolling, and the tire blank is in a rotating state in the rolling process.

The invention also provides a control method for rolling the tire tread, which is implemented by the tire tread rolling device, and comprises the following steps:

controlling the first and second motors during rolling operation of the tire shoulder regionThe motor and the third motor drive the first nut, the second nut and the third nut to respectively drive the first nut and the third nut to respectively drive the second nut and the third nut to respectively drive the third nut to rotate₁、v₂And v₃The speed of (2) is moved; v. of₁、v₂And v₃The ratio of (d) satisfies the following formula:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃

wherein, b₁The distance from the second screw axis to the connecting part of the shoulder area and the crown area before the roller assembly swings, b₂Is the distance between the first and second spindle axes, b₃The height of the shoulder area in the direction of the axis of the third screw, a₃The width of the shoulder area in the direction of the axis of the first screw rod is defined as alpha, and the preset swing angle of the compression roller assembly when the compression roller moves to the edge position of the side of the shoulder area far away from the crown area is defined as alpha.

V is preset before rolling₁、v₂Or v₃The value of (c).

By adopting the technical scheme, compared with the prior art, the tire tread rolling device, the system and the control method have the following beneficial effects:

1. the first screw and the second screw which are parallel to each other are arranged to drive the first nut and the second nut to move at different speeds, so that the swinging of the compression roller assembly is realized, the sequential rolling of a tire crown region and a tire shoulder region can be realized through the compression roller, the smooth transition of the connection part of the tire crown region and the tire shoulder region can be realized, and a better rolling effect is achieved.

2. The running speeds of the first motor, the second motor and the third motor are controlled, so that the press roller can be driven to move along the arc-shaped outer surface of the shoulder area, and the angle of the press roller is adjusted in the moving process, so that the press roller can keep vertical force application on the shoulder area.

3. By reasonably setting v₁、v₂And v₃The speed ratio is driven by a motor, so that the clamping of the compression roller in the manual control of the swing angle process is avoidedOr move outward, ensuring that the servo positioning is uniform and arrives at the same time.

Drawings

Fig. 1 is a schematic structural view of a tire tread rolling device of the present invention.

Fig. 2 is another angle structure diagram of the tire tread rolling device of the present invention.

FIG. 3 is a schematic view of the assembly of the platen assembly with the first lead screw and the second lead screw.

Fig. 4 is a schematic diagram illustrating the rolling operation of the tire tread rolling device of the present invention on the shoulder region.

Detailed Description

The invention is described in further detail below with reference to the figures and the detailed description.

As shown in fig. 1 to 3, the tire tread rolling device of the present invention includes a base plate 1, a mounting frame 2 disposed on the base plate 1, a first lead screw 3 and a second lead screw 4 disposed on the mounting frame 2 and parallel to each other, a first nut 5 and a second nut 6 disposed on the first lead screw 3 and the second lead screw 4, respectively, a third lead screw (not shown) disposed perpendicular to the first lead screw 3 and the second lead screw 4, a third nut (not shown) disposed on the third lead screw, and a roller assembly 8.

The compression roller assembly 8 is rotatably and correspondingly mounted on the first nut 5 and the second nut 6 through the first shaft 81 and the second shaft 82, so that when the first nut 5 and the second nut 6 synchronously move at a constant speed, the compression roller assembly 8 can be driven to synchronously translate at a constant speed, and when the first nut 5 and the second nut 6 move at different speeds, the compression roller assembly 8 can form a swing angle. The first lead screw 3 and the second lead screw 4 are respectively connected to the power output ends of the first motor 10 and the second motor 11.

The mounting frame 2 is mounted on the third nut, and the third screw rod is connected to the power output end of the third motor 12. A first slide rail 13 and a second slide rail 14 are arranged on the mounting frame 2, and the first nut 5 and the second nut 6 are respectively mounted on the first slide rail 13 and the second slide rail 14.

A third slide rail 15 is arranged on the substrate 1, and the mounting rack 2 is mounted on the third slide rail 15.

The compression roller assembly 8 comprises a mounting seat 83, an air cylinder 84 arranged on the mounting seat 83 and a compression roller 85 arranged on an air cylinder arm of the air cylinder 84; the mounting seat 83 is mounted on the first nut 5 and the second nut 6 via the first shaft 81 and the second shaft 82.

The compression roller assemblies 8 are arranged in two groups in parallel. Two first lead screws 3 in the two groups of compression roller assemblies 8 are connected through a coupler and are respectively left-handed threads and right-handed threads; the two second lead screws 4 are connected through a coupler and are respectively left-handed threads and right-handed threads, so that the two groups of compression roller assemblies 8 can move in opposite directions or move in opposite directions during operation.

The invention also provides a tire tread rolling system, which comprises the tire tread rolling device and a controller, wherein the controller is used for controlling the actions of the first motor 10, the second motor 11 and the third motor 12; the controller can control the first motor 10 and the second motor 11 to drive the first nut 5 and the second nut 6 to move at different speeds when the rolling operation is carried out on the shoulder area, so that the rolling roller assembly 8 forms a swing angle; the controller can control the third motor 12 to drive the mounting frame 2 to approach or move away from the green tire.

The first lead screw 3 is positioned on one side of the second lead screw 4 away from the tire blank; the first nut 5 has a moving speed v₁The second nut 6 is moved at a speed v₂The moving speed of the third nut is v₃Then, there is the following formula:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃ ……（1）

wherein, b₁The distance, b, from the axis of the second threaded spindle 4, of the connecting point of the shoulder region 90 and the crown region 80 before the roll assembly 8 swings₂Is the distance between the axis of the first lead screw 3 and the axis of the second lead screw 4, b₃The height of the shoulder region 90 in the direction of the third screw axis, a₃The width of the shoulder region 90 in the axial direction of the first screw 3 is defined as α, which is a preset pivot angle of the nip roller assembly 8 when the nip roller is moved to an edge position of the shoulder region 90 on the side away from the crown region 80.

When the crown region 80 is rolled, the first spindle 3 axis is located at L, as shown in fig. 4₁Position, the second lead screw 4 axis is located at L₂Position, when the compression roller enters the shoulder area 90, the axis of the compression roller assembly is K₁And begins to incline and when the press roll finishes rolling the shoulder area 90, the axis of the press roll component is K₂The first lead screw 3 moves to H along the axis₁Position, second spindle 4 axis moved to H₂Position shifted by the height b of the shoulder region 90 in the direction of the third screw axis₃. The relative displacement of the first nut 5 and the first lead screw 3 during the inclination of the compression roller assembly 8 is a₁+ a₂+ a₃The relative displacement between the second nut 6 and the second lead screw 4 is a₁+ a₃At the same time, since α is a given preset value, b₁ 、b₂、 a₃ 、b₃Given dimensions of the apparatus and of the green tyre, respectively, so that a can be derived₁+ a₂=tanα• (b₁ + b₂)，a₁=tanα•b₁Thereby, the above formula (1) is derived.

The rollers in the two groups of roller assemblies 8 start from the middle of the tire crown area and gradually move towards two sides for rolling, and the tire blank is in a rotating state in the rolling process.

The invention also provides a control method for rolling the tire tread, which is implemented by the tire tread rolling device, and comprises the following steps:

controlling the first motor 10, the second motor 11 and the third motor 12 to drive the first nut 5, the second nut 6 and the third nut to respectively drive v when the tire shoulder area 90 is subjected to rolling operation₁、v₂And v₃The speed of (2) is moved; v. of₁、v₂And v₃The ratio of (d) satisfies the following formula:

v₁：v₂：v₃ = (tanα• (b₁ + b₂) + a₃)：(tanα•b₁ + a₃)：b₃

wherein, b₁The distance, b, from the axis of the second threaded spindle 4, of the connecting point of the shoulder region 90 and the crown region 80 before the roll assembly 8 swings₂Is the distance between the axis of the first lead screw 3 and the axis of the second lead screw 4, b₃The height of the shoulder region 90 in the direction of the third screw axis, a₃The width of the shoulder region 90 in the axial direction of the first screw 3 is defined as α, which is a preset pivot angle of the nip roller assembly 8 when the nip roller is moved to an edge position of the shoulder region 90 on the side away from the crown region 80.

V is preset before rolling₁、v₂Or v₃Either value, so that the other two values can be derived according to equation (1).

By adopting the technical scheme, the tire tread rolling device, the system and the control method can drive the first nut 5 and the second nut 6 to move at different speeds by arranging the first lead screw 3 and the second lead screw 4 which are parallel to each other, so that the rolling of the compression roller assembly 8 is realized, the sequential rolling of the tire crown area 80 and the tire shoulder area 90 can be realized through the compression roller, the smooth transition can be realized at the connecting part of the tire crown area 80 and the tire shoulder area 90, and a better rolling effect is achieved. The running speeds of the first motor 10, the second motor 11 and the third motor 12 are controlled, so that the press roller can be driven to move along the arc-shaped outer surface of the shoulder area 90, and the angle of the press roller is adjusted during the movement, so that the press roller can keep applying a force to the shoulder area 90 basically vertically. By reasonably setting v₁、v₂And v₃The speed ratio is driven by a motor, so that the condition that the pressing roller clamps the tire or moves outwards in the manual control swing angle process is avoided, and the servo positioning is ensured to be uniform and arrive at the same time.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.