Tire semi-finished product material unwinding speed control method and control system

Abstract

The invention provides a tire semi-finished product material unwinding speed control method and system, and belongs to the technical field of tire production. The control system comprises a controller, a detection sensor, a material roller, a cloth liner roller and a conveying belt; the detection sensor is used for detecting a position signal of a material, is arranged between the material roller and the conveying belt, and is in signal connection with the controller; the controller is used for setting the speed value of the conveying belt; and receiving a detection signal of the detection sensor, and calculating and setting the winding speed of the cloth liner roller according to the change of the detection signal. The detection sensor is arranged between the conveying belt and the material roller to detect the position signal of the material in real time, the controller calculates the winding speed, namely the material unwinding speed, of the cloth liner roller according to the position signal of the material, the mechanical structure of equipment is simplified, and the equipment cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of tire production, and in particular relates to a method and a control system for controlling the speed of semi-finished tire material unwinding. Background Art

[0002] At present, in order to make the material unwinding of tire semi-components stable and avoid stretching of materials due to speed fluctuations, most of them use laser sensors to detect the diameter of the winding pad roll, calculate the base pad roll speed according to the material conveying speed and the pad roll diameter, and then adjust the pad roll speed through the material position detection of the material storage position between the material roll and the pad roll to achieve the same linear speed of the unwinding wheel (material roll) and the winding wheel (pad roll). This method requires the installation of a diameter measurement sensor above the pad roll, which takes up space in the equipment, and the sensor is expensive. On the molding machine, more than 9 materials need to be unwinded with the same function, which greatly increases the equipment cost. Summary of the invention

[0003] The purpose of the present invention is to solve the difficulties existing in the above-mentioned prior art, and to provide a method and control system for controlling the speed of unwinding semi-finished tire materials. An algorithm is used to achieve smooth speed control of the material unwinding process of a forming machine. There is no need to detect the diameter of the pad cloth roll, and only the material storage position detection between the material roll and the pad cloth roll is used. Compared with previous control algorithms, the present invention simplifies the mechanical structure of the equipment and saves equipment costs while meeting the speed stability requirements.

[0004] The present invention is achieved through the following technical solutions:

[0005] A first aspect of the present invention provides a tire semi-finished material deflection speed control system, comprising a controller, a detection sensor, a material roller, a pad cloth roller and a conveyor belt;

[0006] The detection sensor is used to detect the position signal of the material, is arranged between the material roll and the conveyor belt, and is connected to the controller through a signal;

[0007] The controller is used to set the speed setting value of the conveyor belt; receive the detection signal of the detection sensor, and calculate and set the winding speed of the pad cloth roller according to the change of the detection signal.

[0008] A further improvement of the present invention is:

[0009] The detection sensor includes a first detection sensor, a second detection sensor and a third detection sensor, and the first detection sensor, the second detection sensor and the third detection sensor are sequentially arranged between the material roller and the conveyor belt, and are respectively used for real-time detection of the position of the material after the pad cloth is peeled off.

[0010] A further improvement of the present invention is:

[0011] The first detection sensor, the second detection sensor and the third detection sensor are all photoelectric sensors.

[0012] A further improvement of the present invention is:

[0013] The conveyor belt is connected with a first driving motor, the cloth pad roller is connected with a second driving motor, and the first driving motor and the second driving motor are connected with a controller.

[0014] A further improvement of the present invention is:

[0015] The speed value of the first driving motor is set on the controller, which is the speed setting value of the conveyor belt;

[0016] The speed value of the second driving motor is set on the controller, which is the set winding speed of the cloth pad roller.

[0017] A second aspect of the present invention provides a method for controlling the speed of unwinding a semi-finished tire material, using the above control system to control the speed of unwinding the material, comprising the following steps:

[0018] Step 1, replace a new material roll on the material roll and calculate the expected speed of the pad roll;

[0019] Step 2, setting the winding speed of the pad roll to the desired speed calculated in step 1;

[0020] Step 3, the detection sensor detects the position of the material in real time. When the detection signal of the first detection sensor changes, return to step 1, otherwise proceed to step 4 or step 5;

[0021] Step 4, when the detection signal of the second detection sensor changes, the controller sets the winding speed of the pad cloth roller to 0 and recalculates the expected speed;

[0022] Step 5: When the detection signal of the third detection sensor changes, the controller sets the winding speed of the cloth roller to the maximum speed of the cloth roller and recalculates the expected speed.

[0023] A further improvement of the present invention is:

[0024] In step 1, the expected speed of the pad roll is calculated as follows:

[0025]

[0026] Among them, the speed setting value of the conveyor belt is set in advance on the controller;

[0027] The minimum diameter of the pad roll is obtained directly;

[0028] A further improvement of the present invention is:

[0029] In step 4, the expected speed is recalculated as follows:

[0030] The expected speed of the cloth roller = the previous expected speed of the cloth roll - the speed increment that needs to be adjusted each time.

[0031] A further improvement of the present invention is:

[0032] In step 5, the expected speed is recalculated as follows:

[0033] The expected speed of the pad roll = the previous expected speed of the pad roll + the speed increment that needs to be adjusted each time.

[0034] A further improvement of the present invention is:

[0035] The calculation formula for the speed increment that needs to be adjusted each time is as follows:

[0036]

[0037] Wherein, the material storage length between the second detection sensor and the third detection sensor is directly measured;

[0038] The speed setting value of the conveyor belt is set on the controller;

[0039] The maximum length of a single material fixed-length conveying refers to the maximum length of the material, and this value is also set in advance on the controller;

[0040] The minimum diameter of the lining roll is obtained directly.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention realizes smooth speed control of the material guiding process of the forming machine through an algorithm. This algorithm does not need to detect the diameter of the pad cloth roll, and only uses the material storage position detection between the material roll and the pad cloth roll. Compared with the previous control algorithms, the present invention simplifies the mechanical structure of the equipment and saves equipment costs while meeting the speed stability requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of a tire semi-finished material guide-off speed control system of the present invention.

[0044] In the figure, 1, conveyor belt, 2, material roller, 3, cloth roller, 4, first detection sensor, 5, second detection sensor, 6, third detection sensor. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0046] [Example 1]

[0047] This embodiment 1 provides a tire semi-finished material guide speed control system, such as Figure 1 As shown, it includes a controller (not shown in the figure), a detection sensor, a material roller 2, a pad cloth roller 3 and a conveyor belt 1;

[0048] The detection sensor is used to detect the position signal of the material, is arranged between the material roll and the conveyor belt, and is connected to the controller through a signal;

[0049] The controller is used to set the speed value of the conveyor belt; receive the detection signal of the detection sensor, and calculate and set the winding speed of the pad roller according to the change of the detection signal. The controller adopts a PLC controller.

[0050] like Figure 1 As shown, the material on the material roller 2 is sent into the conveyor belt 1 for tread bonding after being peeled off, and the pad cloth needs to be wound up by the pad cloth roller 3, wherein the material roller 2 is a non-powered device, and the pad cloth drives the material to be peeled off when the pad cloth is wound up by the pad cloth roller 3. In this process, the material unwinding speed on the material roller 2 must always be kept consistent with the winding speed of the pad cloth roller 3. The present invention arranges a detection sensor between the conveyor belt 1 and the material roller 2 to detect the position signal of the material in real time, and the controller calculates the winding speed of the pad cloth roller according to the material position signal, that is, the material unwinding speed.

[0051] Furthermore, the detection sensor includes a first detection sensor 4, a second detection sensor 5 and a third detection sensor 6, and the first detection sensor 4, the second detection sensor 5 and the third detection sensor 6 are sequentially arranged between the material roller 2 and the conveyor belt 1, and are respectively used for real-time detection of the position of the material after the pad cloth is peeled off.

[0052] The first detection sensor 4 , the second detection sensor 5 and the third detection sensor 6 are all photoelectric sensors.

[0053] Furthermore, the conveyor belt 1 is connected to a first drive motor, the cloth pad roller 3 is connected to a second drive motor, and the first drive motor and the second drive motor are connected to a controller.

[0054] The speed value of the first driving motor is set on the controller, which is the speed setting value of the conveyor belt; the speed value of the second driving motor is set on the controller, which is the set winding speed of the pad cloth roller.

[0055] [Example 2]

[0056] This embodiment provides a method for controlling the speed of semi-finished tire material being released, which is controlled by the control system of Embodiment 1 and includes the following steps:

[0057] Step 1, replace a new material roll on the material roll and calculate the expected speed of the pad roll;

[0058]

[0059] Among them, the speed setting value of the conveyor belt is set in advance on the controller;

[0060] The minimum diameter of the pad roll is obtained directly;

[0061] Step 2, setting the winding speed of the pad roll to the desired speed calculated in step 1;

[0062] Step 3, the detection sensor detects the position of the material in real time. When the detection signal of the first detection sensor 4 changes, return to step 1, otherwise proceed to step 4 or step 5;

[0063] During the material guiding process, the first detection sensor 4, the second detection sensor 5 and the third detection sensor 6 will detect the position of the material after the pad cloth is peeled off in real time. If the detection signal of the first detection sensor 4 changes, it means that there is no material on the material roller 2 and a new material roll needs to be replaced. Therefore, it is necessary to return to step 1, replace the new material roll, and recalculate the expected speed of the pad cloth roll; if the detection signal of the first detection sensor 4 does not change, then proceed to step 4 or step 5.

[0064] Step 4, when the detection signal of the second detection sensor 5 changes, the controller sets the winding speed of the cloth roller 3 to 0 and recalculates the expected speed;

[0065] The expected speed of the cloth roller = the previous expected speed of the cloth roll - the speed increment that needs to be adjusted each time;

[0066] Step 5, when the detection signal of the third detection sensor 6 changes, the controller sets the winding speed of the cloth roller 3 to the maximum speed of the cloth roller and recalculates the expected speed;

[0067] The expected speed of the pad roll = the previous expected speed of the pad roll + the speed increment that needs to be adjusted each time.

[0068] The maximum speed of the cloth roll is a fixed value, and each cloth roll has a maximum unwinding speed value, which is known.

[0069] The calculation formula for the speed increment that needs to be adjusted each time in step 4 and step 5 is as follows:

[0070]

[0071] The material storage length between the second detection sensor and the third detection sensor is directly measured and is approximately twice the distance between the second detection sensor 4 and the third detection sensor 5;

[0072] The speed setting value of the conveyor belt is set in advance on the controller;

[0073] The maximum length of a single material fixed-length conveying refers to the maximum length of the material, and this value is also set in advance on the controller;

[0074] The minimum diameter of the lining roll is obtained directly.

[0075] The invention realizes smooth speed control of the material guiding process of the forming machine through an algorithm. This algorithm does not need to detect the diameter of the pad cloth roll, but only uses the material storage position detection between the material roll and the pad cloth roll. Compared with the previous control algorithms, the invention simplifies the mechanical structure of the equipment and saves equipment costs while meeting the speed stability requirements.

[0076] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0078] The above technical solution is only one implementation mode of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the principles disclosed in the present invention, and it is not limited to the technical solution described in the above specific embodiments of the present invention. Therefore, the above description is only preferred and does not have a restrictive meaning.

Claims

1. A tire semi-finished material guide speed control system, characterized in that: It includes a controller, a detection sensor, a material roller, a pad roller and a conveyor belt; The detection sensor is used to detect the position signal of the material, is arranged between the material roll and the conveyor belt, and is connected to the controller through a signal; The controller is used to set the speed setting value of the conveyor belt; receive the detection signal of the detection sensor, and calculate and set the winding speed of the pad cloth roller according to the change of the detection signal.

2. The tire semi-finished material let-off speed control system according to claim 1, characterized in that: The detection sensor comprises a first detection sensor, a second detection sensor and a third detection sensor; A first detection sensor, a second detection sensor and a third detection sensor are sequentially arranged between the material roller and the conveyor belt, and are respectively used for real-time detection of the position of the material after the pad cloth is peeled off.

3. The tire semi-finished material let-off speed control system according to claim 2, characterized in that: The first detection sensor, the second detection sensor and the third detection sensor are all photoelectric sensors.

4. The tire semi-finished material let-off speed control system according to claim 1, characterized in that: The conveyor belt is connected with a first driving motor, the cloth pad roller is connected with a second driving motor, and the first driving motor and the second driving motor are connected with a controller.

5. The tire semi-finished material let-off speed control system according to claim 4, characterized in that: The speed value of the first driving motor is set on the controller, which is the speed setting value of the conveyor belt; The speed value of the second driving motor is set on the controller, which is the set winding speed of the cloth pad roller.

6. A method for controlling the speed of unwinding a semi-finished tire material, characterized in that: The material delivery speed is controlled by using the control system described in any one of claims 1 to 5, comprising the following steps: Step 1, replace a new material roll on the material roll and calculate the expected speed of the pad roll; Step 2, setting the winding speed of the pad roll to the desired speed calculated in step 1; Step 3, the detection sensor detects the position of the material in real time. When the detection signal of the first detection sensor changes, return to step 1, otherwise proceed to step 4 or step 5; Step 4, when the detection signal of the second detection sensor changes, the controller sets the winding speed of the pad cloth roller to 0 and recalculates the expected speed; Step 5: When the detection signal of the third detection sensor changes, the controller sets the winding speed of the cloth roller to the maximum speed of the cloth roller and recalculates the expected speed.

7. The method for controlling the speed of the semi-finished tire material according to claim 6, characterized in that: In step 1, the expected speed of the pad roll is calculated as follows: Among them, the speed setting value of the conveyor belt is set in advance on the controller; The minimum diameter of the pad roll is obtained directly; 8. The method for controlling the speed of the semi-finished tire material according to claim 7, characterized in that: In step 4, the expected speed is recalculated as follows: The expected speed of the cloth roller = the previous expected speed of the cloth roll - the speed increment that needs to be adjusted each time.

9. The method for controlling the speed of the semi-finished tire material according to claim 8, characterized in that: In step 5, the expected speed is recalculated as follows: The expected speed of the pad roll = the previous expected speed of the pad roll + the speed increment that needs to be adjusted each time.

10. The method for controlling the speed of the semi-finished tire material according to claim 9, characterized in that: The calculation formula for the speed increment that needs to be adjusted each time is as follows: Wherein, the material storage length between the second detection sensor and the third detection sensor is directly measured; The speed setting value of the conveyor belt is set on the controller; The maximum length of a single material fixed-length conveying refers to the maximum length of the material, and this value is also set in advance on the controller; The minimum diameter of the lining roll is obtained directly.

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