WO2023060857A1 - Procédé et système de calcul d'agencement de pièce en caoutchouc de pneu, et support, produit, dispositif et terminal - Google Patents

Procédé et système de calcul d'agencement de pièce en caoutchouc de pneu, et support, produit, dispositif et terminal Download PDF

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WO2023060857A1
WO2023060857A1 PCT/CN2022/086128 CN2022086128W WO2023060857A1 WO 2023060857 A1 WO2023060857 A1 WO 2023060857A1 CN 2022086128 W CN2022086128 W CN 2022086128W WO 2023060857 A1 WO2023060857 A1 WO 2023060857A1
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winding
tire
parameters
calculation
rubber strip
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PCT/CN2022/086128
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English (en)
Chinese (zh)
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张晓辰
黄伟
赵巍
李涛
门喜德
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天津赛象科技股份有限公司
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Publication of WO2023060857A1 publication Critical patent/WO2023060857A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation

Definitions

  • the disclosure of the present invention relates to the technical field of machinery, and in particular to a calculation method and system for automatic arrangement of tire winding rubber strips, a computer-readable storage medium, a computer program product, computer equipment, and an information data processing terminal.
  • the winding process has a long history; in the production process of engineering tires and giant tires, the winding molding method is widely used.
  • the traditional winding equipment adopts the method of winding first and then correcting, which requires repeated debugging.
  • the trial production of a new specification tire winding formula took too long to debug, which caused a huge waste of raw materials and manpower, and was also restricted by production personnel and time in terms of control accuracy.
  • the difficulty in solving the above technical problems lies in the fact that there are differences in the winding shape and winding weight of tires of different specifications, and the production technology and rubber varieties used by each tire manufacturer are also different, which leads to the design of a universal tire.
  • the winding process needs to be formed by a continuous nonlinear winding head cam movement, which results in high complexity in the calculation process and control process, and high verification costs; in order to provide users with flexible configuration software, it is necessary
  • the calculation method can have more adjustable parameters and configurable steps. At the same time, it is also necessary to consider reducing the difficulty of learning and use for users. It is suitable for users of different technical levels, and requires less manual input for the calculation method; Providing users with a software interface with strong visualization and high degree of simulation can greatly reduce the difficulty for users to use, but at the same time increases the difficulty of displaying calculation results.
  • the present invention provides users with a quick-operation, graphical adhesive strip arrangement aided design software tool, enabling users to realize simulation debugging, and users can use the software to provide automatic arrangement algorithms to reduce the design difficulty and workload, thereby shortening the trial production process of new specification tire winding process.
  • the disclosed embodiments of the present invention provide a calculation method, medium, product, equipment, and terminal for automatic arrangement of tire winding rubber strips. Based on the rubber strip stacking simulation system, the process outline input by the user is used as the profiling winding target to realize the automation of the positioning and arrangement process of the rubber strips; the technical scheme is as follows:
  • the method for calculating the automatic arrangement of tire winding rubber strips includes the following steps:
  • Step 1 The user enters the tire embryo radius, tire shoulder radius, contour correction coefficient, flat width, total width, winding rubber strip parameters, winding head equipment parameters, and winding weight parameters in the software;
  • Step 2 generate layered profile parameters through the process profile layered algorithm
  • Step 3 through the adhesive strip profiling arrangement positioning algorithm, the adhesive strip arrangement data is generated
  • Step 4 Through the conversion algorithm of motor cam motion control parameters of the winding head equipment, the rubber strip positioning information is converted into motor control parameters, and the tire shoulder angle and theoretical weight are calculated.
  • the calculation method of the discrete function of the profile line of the strip section is to divide the section of the trapezoidal strip horizontally into m blocks, and finally obtain 2 triangular areas, several trapezoidal areas and several rectangular areas;
  • the calculation is derived from one side to the other, and there are two cases of "from left to right” and "from right to left".
  • the leftmost graphic is marked as b0 area, followed by b1, b2, ... bn, the lower left corner of the leftmost graphic area is the key point marked as P0, and the lower right corner point of the rightmost graphic area is the key point marked as Pnx point;
  • the most The graphic on the right is marked as b0 area, followed by b1, b2, ... bn, the lower right corner of the rightmost graphic is the key point marked as P0, and the point at the leftmost lower left corner is the key point marked as Pnx point;
  • the derivation direction that is, from left to right, select newP1 right; from right to left, select newP1 left, and record it as P1; then take P1 as the center, repeat the above Calculation process, calculate the key points P3, P4, P5, ...Pn of b2, b3,...bn, and draw a circle with Pn as the center and the length of the lower base of bn as the radius, and intersect with g(x), Obtain two intersection points and record them as newPn left point and newPn right point, and calculate the corresponding Pnx point according to the derivation direction;
  • Connect Pn-1 and Pnx calculate the normal vector En->Pn passing through the Pn point, connect En->Pn, En->Pnx and Pn->Pnx to form a triangle, and connect Pn-1->Pn-1new, Pn-1->En, En->Pn, Pn-1new->Pn are connected to form a quadrilateral, and En->Pnnew is obtained by changing the modulus of the En->Pn vector so that the sum of the area of the triangle and the area of the quadrilateral is equal to bn and The sum of the areas of bn-1 finally determines the simulation winding area of bn and bn-1;
  • Another object of the present invention is to provide a system for realizing the calculation method for the automatic arrangement of tire wrapping strips.
  • the automatic arrangement calculation system for tire wrapping strips includes:
  • the human-computer interaction module for inputting calculation parameters is used to manually inject initial parameter values into the system
  • the contour parameter subdivision calculation module divides the contour parameters entered by the user into multiple layers according to the specific layering calculation method selected by the user and the entered winding rubber strip parameters, and generates the contour parameters of each layer;
  • the rubber strip automatic arrangement calculation module calculates the winding head cam trajectory and the rubber strip simulation contour, and generates the winding head cam trajectory based on the contour center coordinate system;
  • the winding head control parameter calculation module calculates and obtains the three-axis winding head motor cam control parameters according to the winding head cam trajectory, equipment parameters, tire embryo radius, tire shoulder radius, flat width, etc., and generates a motor whose reference frame is the mechanical winding head Cam control parameters.
  • the human-computer interaction module for inputting calculation parameters includes:
  • the total width is 750 mm, the flat width is 400 mm, and the embryo radius is 888 mm;
  • the top width of the strip is 30 mm, the bottom width is 60 mm, and the thickness is 5 mm;
  • the zero point direction of the equipment is on the right side (that is, when the X-axis is 0, the winding head is at the rightmost position), the X-axis is 1202, the Y-axis is 1362.15, and the radius of the rotating head is 320.
  • the winding direction is from the left
  • the contour parameter subdivision calculation module adopts the thickness equalization method, and the maximum thickness input by the user is: 45 mm graphics are divided into 3 layers of layered contour parameters;
  • the automatic arrangement calculation module of the rubber strips calculates from the leftmost side of the bottom layer 1 to generate the profiling contour of the winding rubber strips and the cam track of the winding head;
  • the winding head control parameter calculation module generates 128 three-axis winding head motor control parameter sequences based on the winding head cam trajectory calculated in the previous step, according to the shoulder radius, tire embryo radius, equipment parameters, and correction parameters.
  • the human-computer interaction module for inputting calculation parameters is also provided with a display interface for inputting total width, embryo radius, contour parameters, top width, low width, thickness of the winding rubber strip, and winding head
  • Another object of the present invention is to provide a computer-readable storage medium storing a computer program.
  • the processor executes the calculation method for automatic arrangement of tire winding rubber strips.
  • Another object of the present invention is to provide a computer program product stored on a computer-readable medium, including a computer-readable program, when executed on an electronic device, a user input interface is provided to implement the automatic discharge of the tire winding rubber strip. Cloth calculation method.
  • Another object of the present invention is to provide a computer device, the computer device includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the following step:
  • Step 1 The user enters the tire embryo radius, tire shoulder radius, contour correction coefficient, flat width, total width, winding rubber strip parameters, winding head equipment parameters, and winding weight parameters in the software;
  • Step 2 generate layered profile parameters through the process profile layered algorithm
  • Step 3 through the adhesive strip profiling arrangement positioning algorithm, the adhesive strip arrangement data is generated
  • Step 4 Through the conversion algorithm of motor cam motion control parameters of the winding head equipment, the rubber strip positioning information is converted into motor control parameters, and the tire shoulder angle and theoretical weight are calculated.
  • Another object of the present invention is to provide an information data processing terminal, the information data processing terminal includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the The processor executes the calculation method for automatically arranging tire winding rubber strips.
  • the repeated trial winding work of the traditional tire winding process is transformed into a process of repeated simulation and design of the profiling contour, which improves the success rate of the user's trial winding; compared with the manual design, the calculation method of the present invention,
  • the cam trajectory comparison is shown in Figure 11(a) and Figure 11(b), and the data comparison is as follows:
  • the present invention requires 128 stages of cam motion control for calculation, and 129 stages for manual design, which achieves higher calculation accuracy; compared with manual design, the winding weight saves about 0.5 rubber %.
  • the present invention decomposes the process of automatic glue removal calculation into several independent automatic calculation steps, compresses the amount of calculation, and provides the user with an opportunity to adjust parameters at each step, so that the user can obtain automatic glue strip arrangement
  • the convenience but also retains the degree of freedom to adjust the process parameters more flexibly.
  • Fig. 1 is a software main parameter entry and display interface diagram provided by the present invention
  • Fig. 2 is the process profile parameter setting software interface figure provided by the present invention.
  • Fig. 3 is a two-dimensional Cartesian coordinate system data display interface diagram corresponding to the process profile provided by the present invention
  • Fig. 4 is an explanatory diagram of the physical meaning corresponding to some parameters provided by the present invention.
  • Figure a is an illustration of the physical meaning of the total width, flat width, tire embryo radius, shoulder radius, and center offset;
  • Figure b is the physical meaning of the top width, thickness, and bottom width of the rubber strip parameters, as well as the equipment parameters.
  • Fig. 5 is a schematic diagram of the calculation result of the second step layered profile data provided by the present invention.
  • Fig. 6 is a two-dimensional Cartesian coordinate system data display interface diagram of a layered profile provided by the present invention.
  • Fig. 7 is the two-dimensional Cartesian coordinate system data display interface diagram of the third step calculation result provided by the present invention.
  • Fig. 8 is a partial zoom function interface diagram of the software of Fig. 7 provided by the present invention.
  • Fig. 9 is an explanatory diagram of the positioning algorithm of the strip profiling arrangement provided by the present invention.
  • Fig. 10 is a two-dimensional Cartesian coordinate system data display interface diagram of the calculation result of the fourth step provided by the present invention.
  • Fig. 11(a) is a partial winding track diagram of the tread section on the 29.5R25TUL400 specification OTR tire by using the automatic arrangement calculation method of the present invention
  • Fig. 11 (b) is the manual design of the present invention on the 29.5R25TUL400 specification OTR tire partial winding trajectory diagram of the tread segment;
  • Fig. 12 is a partially enlarged view of a section design provided by the present invention.
  • Fig. 13(A) shows the change diagram of the g(x) and gnew(x) curves before the positioning calculation in Fig. 9;
  • Fig. 13(B) shows the change diagram of g(x) and gnew(x) curves after the positioning calculation in Fig. 9;
  • Figure 14 (A) shows the third step of the automatic layered profiling arrangement algorithm, specifying the number of the No. 41 rubber strip of the first layer the integral area of
  • Figure 14 (B) shows the third step of the automatic layered profiling arrangement algorithm, specifying the number of the No. 41 rubber strip of the first layer the integral area of
  • Figure 15 shows the rubber strip section segmentation diagram and key points in the calculation method of the rubber strip section contour line discrete function
  • Figure 16(A) shows The corresponding integral area of ;
  • Figure 16(B) shows The corresponding integral area of ;
  • Figure 16(C) shows The corresponding integral area of ;
  • Figure 16(D) shows The corresponding integral area of ;
  • Fig. 17 (A) shows in the calculation method of the discrete function of the rubber strip cross-section contour line of the second rubber strip of the first layer "from left to right” to derive and calculate the circular arc positioning method of P0 to P5;
  • Figure 17(B) shows the calculation area of the b3 area simulation winding graphics in the calculation method of the discrete function of the strip section contour line is the quadrilateral area formed by E4->P4new, P3->E4, P3->P3new and P3new->P4new , and the vector E4->P4new direction.
  • the tread formula of a certain specification is taken as an example, and the first step of main parameter setting is completed first.
  • the total width is 750 mm, the flat width is 400 mm, and the embryo radius is 888 mm;
  • the top width of the strip is 30 mm, the bottom width is 60 mm, and the thickness is 5 mm;
  • the zero point direction of the equipment is on the right side, the X axis is 1202, the Y axis is 1362.15, and the radius of the rotating head is 320.
  • the winding direction is from left to right.
  • the parameters of the process profile as shown in Figure 2.
  • the parameters are described by relative coordinates, that is, the thickness corresponds to the Y axis, and the offset is the cumulative sum of the offset values of the adjacent points on the X axis of the 0-point symmetrical axis in the center.
  • the software internally converts the process profile parameters shown in Figure 2 into the following absolute value coordinate discrete functions for calculation
  • the software will draw the adjusted graphics in real time according to the numerical changes of the process profile input by the user, as shown in Figure 3.
  • the embodiment adopts the "thickness equalization method" to divide the process profile into 3 layers, and the calculation result value is displayed through the interface as shown in Figure 5;
  • the thickness equalization method is one of the process contour layering algorithms, which generates layered contour parameters, that is, generates several contour line discrete functions f(x), followed by 1 layer f1(x), 2 layers f2(x)...n Layer fn(x), after this stage, the user can check the value of each coordinate point of each function of the calculation results f1(x), f2(x)...fn(x) on the interface shown in Figure 5 fp is modified to generate the user's target profile, and the process profile layering algorithm can also be repeatedly executed, and the parameters of the first step can also be modified; due to the large difference in the shape of the tire winding process profile, a specific layering algorithm is difficult to satisfy And applicable to various situations, therefore, the software integrates several contour layering algorithms; including, thickness equalization method, flat layer method, middle wrapping method; thickness equalization method is based on the number of layers n specified by the user, will The process profile discrete function f(x) is converted into several new layers of discrete functions
  • Figure 6 is a graphical display interface of the two-dimensional Cartesian coordinate system data of all layered contours after layered calculation using the thickness equalization method.
  • the third step is to generate the adhesive strip arrangement data through the adhesive strip profiling arrangement positioning algorithm.
  • the user can either automatically process all the layers with one button, or alternately calculate manually and automatically.
  • Fig. 7 shows the image after the one-button automatic processing is completed
  • Fig. 8 is a partial enlarged view of Fig. 7, showing the local details of the strip profiling arrangement positioning algorithm of the present invention
  • the automatic layered profiling arrangement is performed by the user to specify a specific layer, such as: "specify the first layer", to execute the strip arrangement positioning algorithm;
  • Manual profiling arrangement is a function that the user inputs the starting point coordinate P of profiling calculation, and the system completes a profiling layout positioning calculation function;
  • Manual and automatic alternate calculation means that the user alternately uses the functions of manual profiling layout and automatic layered profiling layout to complete the process of profiling layout calculation from layer 1 to layer N.
  • the calculation method for the profiling arrangement and positioning of the above rubber strips is, firstly, according to the current number of layers as "layer 1", corresponding to f1(x), the winding direction entered by the user is "winding from the left", then, when the number of layers is an odd number , it is the same as the winding direction specified by the user, and the algorithm deduces and calculates from left to right; when the number of layers is even, it is opposite to the winding direction specified by the user.
  • Figure 9 shows that the current layer is the second film of the first layer
  • the calculation key points and function marker diagram of the strip, the calculation and derivation direction is "from left to right”; then, according to the discrete function g(x) of the stacked line of the current strip, the intersection point Q of f(x) and g(x) is calculated as the calculation The starting point, the coordinates are (-375,0).
  • Figure 13 shows the change of g(x) and gnew(x) curves before and after the calculation in Figure 9.
  • Figure 17 (A) shows the calculation method of the discrete function of the cross-section contour line of the second rubber strip in the first layer In the "from left to right” derivation and calculation of the arc positioning method from P0 to P5
  • Figure 17 (B) shows the calculation method of the discrete function of the strip section contour line in the b3 area simulation winding graphics calculation area is E4->P4new, The quadrilateral area formed by P3->E4, P3->P3new and P3new->P4new, and the direction of the vector E4->P4new, and then calculate all the intersection points of s(x) and f(x) to get P1, P2... Pz;
  • Figure 16 shows The corresponding integral area of .
  • the judgment threshold R is selected as 15 square millimeters, which means that the cross-section of each rubber strip is within the interval ⁇ Q, PZ ⁇ , and the offset After the area, the figure of f(x) shall not protrude by 15 square millimeters.
  • Figure 14 shows the No. 41 rubber strip of the first layer. and The integral area of , after the above formula The calculation is confirmed, and the glue strips need to be placed continuously, and finally 43 glue strips are generated on the first layer;
  • the fourth step is to convert the rubber strip positioning information into motor control parameters through the motor cam motion control parameter conversion algorithm of the winding head equipment, and calculate the tire shoulder angle and theoretical weight.
  • the user can repeatedly adjust the parameters of the first few steps to affect the control position of the winding head and change the trend of the winding weight.
  • winding weight must provide users with technical means to adjust its value.
  • the winding weight is related to the product of the strip density, the cross-sectional area of the strip and the winding length of the strip.
  • the user adjusts the rubber strip density according to the rubber variety selected by the winding process, which will change the winding weight; in the first step, the user changes the rubber strip that affects the cross-sectional area of the rubber strip according to the shape of the rubber strip produced by the rubber extruder equipment.
  • top width, bottom width and thickness will change the winding weight; in the first step, the user adjusts the shoulder radius and tire embryo radius, which will cause the trajectory of the winding head to change in the calculation of this step, which will eventually lead to a change in the winding length of the rubber strip, resulting in The winding weight changes; the user changes the winding profile parameters in the second step, which will affect the calculation results of the third step, and finally affect the trajectory of the winding head and the winding length of the rubber strip, resulting in a change in the winding weight.
  • the total width of the main parameter corresponds to the X-axis range of the process contour winding;
  • the flat width of the main parameter corresponds to the parallel movement range of the X-axis motor of the winding head;
  • the embryo radius of the main parameter is the center axis of the forming drum to the winding surface The distance;
  • the shoulder radius of the main parameter determines the speed and range of bending on both sides of the winding body;
  • the center offset of the main parameter is the distance between the midpoint of the equipment parameter and the 0 point of the process profile;
  • the X-axis of the equipment parameter corresponds to the distance from the mechanical zero point to the center of the X-axis of the forming drum; the Y-axis of the equipment parameter corresponds to the distance from the mechanical zero point to the surface of the forming drum; the radius of the rotating head of the equipment parameter corresponds to the rotating radius of the rotating head of the mechanical structure of the winding head ;
  • the top width, bottom width, and thickness of the rubber strip parameters correspond to the cross-sectional shape parameters of the isosceles trapezoidal rubber strip.
  • the one-button automatic strip arrangement algorithm is used to generate the positions of all strips, and the software displays the winding process contour line, the layered winding contour line, and the two-dimensional Cartesian coordinate system in Figure 7.
  • Figure 8 is a partial enlarged view provided by the software for the curve data of the cross-sectional shape of the rubber strip stack;

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Abstract

La présente invention porte sur le domaine technique de l'enroulement des pneus. L'invention concerne un procédé et un système de calcul d'agencement de bandes de caoutchouc de pneu, et un support, un produit, un dispositif et un terminal. Le procédé comprend : un utilisateur entrant, dans un logiciel, un rayon d'ébauche de pneu, un rayon d'épaulement de pneu, un coefficient de correction de contour, une largeur à plat, une largeur totale, un paramètre d'enroulement de bande de caoutchouc, un paramètre de dispositif de tête d'enroulement et un paramètre de poids d'enroulement ; la génération d'un paramètre de contour de mise en couche au moyen d'un algorithme de mise en couche de contour de processus ; la génération des données d'agencement de bande de caoutchouc au moyen d'un algorithme de positionnement d'agencement de profilage de bande de caoutchouc ; et la conversion des informations de positionnement de bande de caoutchouc en un paramètre de commande de moteur électrique au moyen d'un algorithme de conversion de paramètre de commande de mouvement de came de moteur électrique pour un dispositif de tête d'enroulement, et le calcul d'un angle de rotation d'épaulement de pneu et d'un poids théorique. Au moyen du logiciel de la présente invention, une opération d'enroulement d'essai répété d'un processus d'enroulement de pneu classique est convertie en la procédure de simulation et de conception répétées d'un contour de profilage, améliorant ainsi le taux de réussite de l'enroulement d'essai d'un utilisateur.
PCT/CN2022/086128 2021-10-12 2022-04-11 Procédé et système de calcul d'agencement de pièce en caoutchouc de pneu, et support, produit, dispositif et terminal WO2023060857A1 (fr)

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CN118514370A (zh) * 2024-07-23 2024-08-20 杭州钛可自动化有限公司 采用配方压力控制的轮胎胎面仿形缠绕压合系统

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