Directional mold sticking injection molding method and mold for motorcycle wind shield plastic plate

Abstract

The invention relates to a directional mold sticking injection molding method and mold for a motorcycle wind shield plastic plate, and relates to the technical field of injection molding. According to the forming part parameters and the raw material types, the mold specification, the raw material demand quantity, the blowing circuit diagram and the blowing output parameters are determined; the front mold mechanism is machined according to the mold specification and the blowing circuit diagram, and the rear mold mechanism, the injection molding mechanism and the ejection mechanism are selected according to the mold specification to be assembled; controlling the rear mold mechanism, the front mold mechanism and the injection molding mechanism to execute injection molding according to the raw material demand quantity to prepare an injection molding part; and outputting gas according to the blowing output parameter, and controlling the ejection mechanism to eject the injection molding part. The mold has the effect of conveniently demolding a product.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to a method and mold for directional adhesive injection molding of a motorcycle windshield plastic panel. Background Technology

[0002] Injection molding, also known as injection molding, is a highly efficient molding process for thermoplastic and thermosetting plastics, widely used in electronics, automotive, daily necessities, medical devices, and packaging industries.

[0003] When injection molding a motorcycle windshield plastic panel, the plastic raw material is heated and melted into a fluid state, and then injected rapidly into the mold cavity under high pressure. After holding the pressure and cooling and solidifying, the mold is opened and ejected, thus obtaining a motorcycle windshield plastic panel that is completely consistent with the shape of the mold cavity.

[0004] During the injection molding process of motorcycle windshield plastic panels, the heated and molten raw materials are unstable and easily stick to the rear mold (moving mold) or front mold (fixed mold). When it is necessary to remove the injection-molded product, the product may not remain on the rear mold with the ejection mechanism as expected, but may stick to the front mold side, making it inconvenient to demold the product. Summary of the Invention

[0005] To facilitate product demolding, this invention provides a method for directional adhesive injection molding of a motorcycle windshield plastic panel and a mold.

[0006] In a first aspect, the present invention provides a method for directional adhesive injection molding of a motorcycle windshield plastic panel, employing the following technical solution: A method for directional adhesive injection molding of a motorcycle windshield plastic panel includes: S1: Obtain the parameters of the molded part and the material type; S2: Determine the mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters based on the molded part parameters and the raw material type; S3: Process the front mold mechanism according to the mold specifications and the air blowing circuit diagram, and select the rear mold mechanism, injection mechanism and ejection mechanism according to the mold specifications for assembly; S4: Control the rear mold mechanism, the front mold mechanism, and the injection molding mechanism to perform injection molding to produce injection molded parts according to the raw material demand; S5: Output gas according to the blowing output parameters, and control the ejection mechanism to eject the injection molded part.

[0007] By adopting the above technical solution, the parameters of the molded part and the type of raw material are obtained, and the mold specifications, raw material requirements, air blowing circuit diagram and air blowing output parameters are determined accordingly. This enables precise control of the injection molding process. After processing and selecting relevant mechanisms according to the mold specifications and air blowing circuit diagram to prepare the injection molded part, the air blowing output is controlled by the air blowing output parameters before the ejection operation is performed. This effectively achieves directional sticking to the mold, facilitates product demolding, and thus improves production efficiency and product consistency.

[0008] Optionally, the methods for generating the mold specifications, the raw material requirements, the air blowing circuit diagram, and the air blowing output parameters include: S21: Extract shape parameters and shape thickness distribution based on the molded part parameters; S22: Select the shape specifications according to the shape parameters; S23: Calculate the volume value of the molded part using the shape parameters and the shape thickness distribution; S24: Retrieve the type density value, type injection molding variation value, and material adhesion value based on the material type; S25: Calculate the weight of the molded part using the density value of the type and the volume value of the molded part; S26: Determine the injection input amount by combining the weight value of the molded part with the injection variation value of the type; S27: Generate shape position points based on the shape parameters and the weight value of the molded part; S28: Generate a position connection diagram based on the shape location points and the shape specifications; S29: Determine the positional blowing parameters using the positional connection diagram, the weight value of the molded part, and the material adhesion value, and use the shape specification as the mold specification, the injection input amount as the material requirement, the positional blowing parameters as the blowing output parameters, and the positional connection diagram as the blowing circuit diagram.

[0009] By adopting the above technical solution, the shape parameters and shape thickness distribution are extracted, and combined with material characteristic parameters such as type density value, type injection molding variation value and material adhesion value, the system calculates the weight value of the molded part and the injection input amount, thereby accurately generating the blowing line and blowing value. This ensures a high degree of matching between the blowing output parameters, blowing line diagram, material demand and mold specifications, significantly improving the accuracy of mold sticking control and the quality stability of injection molded parts.

[0010] Optionally, the method for generating the shape location points includes: S271: Extract the shape center point from the shape parameters; S272: Retrieve the injection position point based on the shape specifications; S273: Determine a symmetrical position point by means of the injection position point and the center point of the shape; S274: Determine the weight concentration area based on the shape and thickness distribution; S275: Select a location point based on the weight concentration area; S276: Merge the selected location point in the region with the symmetrical location point to form the shape location point.

[0011] By adopting the above technical solution, the weight concentration area and the area selection point are determined by extracting the shape center point, shape thickness distribution and injection position point. The symmetrical position point is determined by the injection position point and the shape center point. Finally, the area selection point and the symmetrical point are merged to generate the shape position point, so that the blowing position can accurately correspond to the thickness and center of gravity distribution of the injection molded part, and enhance the effectiveness and reliability of blowing demolding.

[0012] Optionally, the method for selecting the location point of the region selection includes: S2751: Obtain the number of regions and the center point of each region based on the weight concentration region; S2752: Calculate the center distance vector value between the center point of the region and the center point of the shape; S2753: Determine the adjustment distance vector value based on the number of regions and the center distance vector value; S2754: Use the adjusted distance vector value to offset the injection position point from the symmetrical position point to obtain the area offset position point, and use the area offset position point as the area selection position point.

[0013] By adopting the above technical solution, the number of regions and the center point of each region are obtained, the center distance vector value is calculated and adjusted with the number of regions, and then the injection position point and symmetrical position point are offset by adjusting the distance vector value, so as to achieve precise positioning of the region selection position point, making the blowing action more in line with the actual material flow and shrinkage, and improving the accuracy of directional sticking control.

[0014] Optionally, the method for determining the adjusted distance vector value includes: S27531: Determine whether the number of regions is only one; S27532: If yes, then determine the single-region offset vector value based on the center distance vector value, and use the single-region offset vector value as the adjustment distance vector value; S27533: If not, then determine the area value of the concentrated region based on the weight concentration region; S27534: Sort the area values ​​of the concentrated area from largest to smallest, and determine the selected area value based on the sorting result; S27535: Determine the shape area value based on the shape parameters; S27536: Calculate the area ratio based on the selected area value and the shape area value; S27537: Combine the area ratio value and the center distance vector value to determine the area offset distance vector value, and use the area offset distance vector value as the adjustment distance vector value.

[0015] By adopting the above technical solution, the number of regions is determined and processed separately. When there is only one region, the single region offset vector value is determined by the center distance vector value and used as the adjustment distance vector value. When there is more than one region, the area value of the concentrated region is determined and sorted to obtain the selected area value. Then, the shape area value is extracted to calculate the area ratio value. The area offset distance vector value is determined by the area ratio value and the center distance vector value and used as the adjustment distance vector value. Thus, for complex parts with multiple concentrated weight regions, the air blowing position is reasonably distributed, avoiding local sticking or abnormal demolding.

[0016] Optionally, the method for generating the location connection diagram includes: S281: Extract the edge position points of the specifications according to the shape specifications; S282: Select the nearest edge position of the specified shape position point as the edge selection position point; S283: Calculate the edge distance value between the edge selection point and the shape position point; S284: Determine the nearest distance value for each of the shape location points; S285: Calculate the difference between the edge distance value and the neighbor distance value as a distance deviation value; S286: Generate a selection connection route diagram based on the distance deviation value and the edge selection location point, and use the selection connection route diagram as the location connection route diagram.

[0017] By adopting the above technical solution, the edge location points of the specification are extracted and selected. The edge distance value and the adjacent distance value are calculated, and then the distance deviation value is calculated. The distance deviation value and the edge selection location points are used to generate a connection line diagram, so that the air blowing line layout is scientific and the path is optimal, reducing air path resistance and improving air blowing efficiency.

[0018] Optionally, the method for generating the selected connection diagram includes: S2861: Determine whether all the distance deviation values ​​are less than the preset deviation reference value; S2862: If yes, then connect the edge selection point with the shape point to form a single-channel circuit diagram, and use the single-channel circuit diagram as the selection connection circuit diagram; S2863: If not, mark the edge selection position point corresponding to the distance deviation value which is not less than the preset deviation benchmark value as the pre-deletion position point; S2864: Determine the remaining position points based on the edge selection position points and the pre-deletion position points; S2865: Connect the remaining position points with the shape position points to form a cross-channel route diagram, and use the cross-channel route diagram as the selected connection route diagram.

[0019] By adopting the above technical solution, single-channel circuit diagrams or cross-channel circuit diagrams are generated by judging the distance deviation value and the preset deviation benchmark value, respectively, to avoid redundant air paths, improve the response speed and reliability of the blowing system, and reduce energy consumption.

[0020] Secondly, the present invention provides a directional adhesive injection molding die for a motorcycle windshield plastic panel, employing the following technical solution: A directional adhesive injection molding die for a motorcycle windshield plastic panel, used to realize the directional adhesive injection molding method for a motorcycle windshield plastic panel as described in any one of the first aspects, comprising: The rear mold mechanism has a rear mold cavity for filling and injection molding of raw materials; The front mold mechanism is located on the side of the rear mold mechanism where the rear mold cavity is opened. The side closer to the rear mold mechanism has a front mold cavity for filling and injection molding of raw materials, and has a number of air holes for gas to enter the front mold cavity. The injection molding mechanism is located on the side of the front mold mechanism away from the rear mold mechanism, and is used to inject raw materials into the front mold cavity and the rear mold cavity to form injection molded parts; An ejection mechanism is located on the side of the rear mold mechanism away from the front mold mechanism, and is used to eject the injection molded part on the rear mold mechanism toward the front mold mechanism; A gas supply mechanism is located on the side of the front mold mechanism away from the rear mold mechanism, and is used to input gas into the gas hole.

[0021] By adopting the above technical solution, after the injection molding mechanism, the rear mold mechanism and the front mold mechanism inject the raw material to form the injection molded part, the gas is introduced into the air hole through the gas supply mechanism, which effectively realizes directional sticking to the mold. Then, the injection molded part is ejected through the ejection mechanism, which facilitates the demolding of the product.

[0022] Optional, also includes: A protective mechanism is provided on the side of the front mold mechanism away from the rear mold mechanism to protect the injection molding mechanism and the gas supply mechanism, and has a placement groove for placing the injection molding mechanism and the gas supply mechanism.

[0023] By adopting the above technical solutions, by setting up protective mechanisms, and by integrating protection and movement guidance for the injection molding mechanism and the gas transmission mechanism, the overall safety and operational continuity of the equipment are improved, while extending the service life of the mechanisms.

[0024] Optionally, both the rear mold mechanism and the front mold mechanism are provided with a number of cooling holes for cooling water to circulate.

[0025] By adopting the above technical solution, cooling holes are opened in the rear mold mechanism and the front mold mechanism, and cooling water is introduced to achieve circulating temperature control, which effectively accelerates the cooling and shaping speed of the mold, reduces the production cycle, and improves the dimensional stability and surface quality of the molded parts.

[0026] In summary, the present invention has at least one of the following beneficial technical effects: 1. By obtaining the parameters of the molded part and the type of raw material, and accordingly determining the mold specifications, raw material requirements, air blowing circuit diagram and air blowing output parameters, precise control of the injection molding process is achieved. After processing and selecting relevant mechanisms according to the mold specifications and air blowing circuit diagram to prepare the injection molded part, the air blowing output is controlled by the air blowing output parameters before the ejection operation is performed, which effectively realizes directional sticking to the mold, facilitates product demolding, and thus improves production efficiency and product consistency. 2. By extracting shape parameters and shape thickness distribution, and combining them with material characteristic parameters such as type density value, type injection molding variation value, and material adhesion value, the system calculates the weight value of the molded part and the injection input amount, thereby accurately generating the blowing line and blowing value. This ensures a high degree of matching between the blowing output parameters, blowing line diagram, material demand and mold specifications, significantly improving the accuracy of mold sticking control and the quality stability of injection molded parts. 3. By extracting the shape center point, shape thickness distribution, and injection position point, the weight concentration area and area selection position point are determined. The symmetrical position point is determined by the injection position point and the shape center point. Finally, the area selection position point and the symmetrical position point are merged to generate the shape position point, so that the blowing position can accurately correspond to the thickness of the injection molded part and the center of gravity distribution, thereby enhancing the effectiveness and reliability of blowing demolding. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a directional adhesive injection molding die for a motorcycle windshield plastic panel; Figure 2 This is an exploded diagram of a directional bonding injection mold for a motorcycle windshield plastic panel. Figure 1 ; Figure 3 This is an exploded diagram of a directional bonding injection mold for a motorcycle windshield plastic panel. Figure 2 ; Figure 4This is a flowchart of the method for directional adhesive injection molding of motorcycle windshield plastic panels.

[0028] The parts referred to by the numbers in the above attached figures are as follows: 1. Rear mold mechanism; 2. Front mold mechanism; 3. Injection mechanism; 4. Ejection mechanism; 5. Gas supply mechanism; 6. Protective mechanism; 7. Rear mold cavity; 8. Front mold cavity; 9. Air hole; 10. Placement groove; 11. Cooling hole. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figure 1 and Figure 2 This invention discloses a directional adhesive molding injection mold for a motorcycle windshield plastic panel, which includes a rear mold mechanism 1, a front mold mechanism 2, an injection molding mechanism 3 for conveying raw materials, an ejection mechanism 4 for ejecting the injection molded part, a gas conveying mechanism 5 for conveying gas, and a protective mechanism 6.

[0031] Reference Figure 2 and Figure 3 The rear mold mechanism 1 and the front mold mechanism 2 are symmetrically arranged. The rear mold mechanism 1 has a rear mold cavity 7 on the side closer to the front mold mechanism 2 for filling and injection molding of raw materials. The front mold mechanism 2 has a front mold cavity 8 on the side closer to the rear mold mechanism 1 for filling and injection molding of raw materials. The cavity formed by the rear mold cavity 7 and the front mold cavity 8 is filled with raw materials and injection molded to form an injection molded part.

[0032] Reference Figure 2 and Figure 3 Both the rear mold mechanism 1 and the front mold mechanism 2 are provided with several cooling holes 11 for cooling water to flow through, thereby facilitating rapid cooling of the rear mold mechanism 1 and the front mold mechanism 2. In this embodiment, a total of 10 cooling holes 11 are provided.

[0033] Reference Figure 2 and Figure 3 The injection molding mechanism 3 is installed on the side of the front mold mechanism 2 away from the rear mold mechanism 1, and the air supply mechanism 5 is installed on the side of the front mold mechanism 2 away from the rear mold mechanism 1. The front mold mechanism 2 has several air holes 9 for gas to enter the front mold cavity 8. One of the air holes 9 is located on the circumferential outer wall of the front mold mechanism 2, and the other air hole 9 is located on the cavity wall of the front mold cavity 8. This facilitates the input of gas into the front mold cavity 8 through the air supply mechanism 5 and moves the injection molded part towards the rear mold mechanism 1. As a result, the injection molded part does not adhere to the front mold mechanism 2, but only to the rear mold mechanism 1, thus achieving the purpose of directional adhesion.

[0034] Reference Figure 2 and Figure 3The protective mechanism 6 is installed on the side of the front mold mechanism 2 away from the rear mold mechanism 1. A placement groove 10 is provided on the side of the protective mechanism 6 closest to the front mold mechanism 2 for placing the injection molding mechanism 3 and the air supply mechanism 5. The size of the placement groove 10 is larger than the size of the injection molding mechanism 3 and the air supply mechanism 5. The protective mechanism 6 is used to cover and protect the injection molding mechanism 3 and the air supply mechanism 5, and it abuts against the front mold mechanism 2, thus facilitating the direct movement of the front mold mechanism 2 through the movement of the protective mechanism 6.

[0035] Reference Figure 2 and Figure 3 The ejection mechanism 4 is installed on the side of the rear mold mechanism 1 away from the front mold mechanism 2. The ejection mechanism 4 ejects the injection molded part that is only attached to the rear mold mechanism 1 towards the front mold mechanism 2, thereby facilitating the ejection of the injection molded part.

[0036] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the method embodiments described later, and will not be repeated here.

[0037] Reference Figure 4 Based on the same inventive concept, embodiments of the present invention provide a method for directional adhesive injection molding of a motorcycle windshield plastic panel, comprising: S1: Obtain the parameters of the molded part and the material type.

[0038] Among them, the molding part parameters refer to all the design specifications and performance requirements of the final injection molded part to be manufactured. Molded part parameters include three-dimensional dimensions, surface curvature, wall thickness of various parts, surface treatment requirements, mechanical properties, and assembly relationships with other parts.

[0039] The type of raw material refers to the specific type of plastic material used to manufacture the molded part. Raw material types include polycarbonate, acrylic, or ABS resin, etc.

[0040] The parameters of the molded part and the type of raw material are obtained after being input by the operator in advance.

[0041] S2: Determine the mold specifications, material requirements, air blowing circuit diagram, and air blowing output parameters based on the parameters of the molded part and the type of raw material.

[0042] Among them, mold specifications refer to the detailed technical requirements of molds designed for the production of specific molded parts.

[0043] Raw material requirements refer to the weight of plastic raw materials required to complete one injection molding cycle.

[0044] A blow-through diagram is a diagram that guides the path of gas as it is introduced into the mold to assist in demolding.

[0045] The air blowing output parameters refer to the specific parameters of air blowing during demolding. The air blowing output parameters include air blowing pressure and air blowing time.

[0046] By analyzing the parameters of the molded parts and the type of raw materials, we can obtain the mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters, which will facilitate subsequent use.

[0047] To further ensure the rationality of mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters, it is necessary to conduct further separate analysis and calculation of mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters. The specific steps are explained in detail below.

[0048] The method for generating mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters includes the following steps: S21: Extract shape parameters and shape thickness distribution based on the parameters of the molded part.

[0049] Among these, shape parameters refer to the two-dimensional dimensions of the final injection-molded part, i.e., the length, width, and other dimensional parameters of the injection-molded part's projection. Shape thickness distribution refers to the distribution of wall thickness in different parts of the final injection-molded part. Part parameters include both shape parameters and shape thickness distribution.

[0050] The shape parameters and thickness distribution are extracted from the parameters of the molded part, which facilitates subsequent use.

[0051] S22: Select shape specifications based on shape parameters.

[0052] Here, shape specifications refer to the specifications corresponding to the mold selected based on the shape. Shape specifications include the dimensions of the mold and the preset position point for injecting the raw material.

[0053] The length and width dimensions of the injection molded part are retrieved by the shape parameters, the corresponding projected area is calculated, and then the shape specification is obtained by querying the preset specification database based on the projected area, which is convenient for subsequent use.

[0054] The specification database pre-stores the maximum projected area corresponding to the molds of different specifications that can be produced. The specification database is obtained after the operator inputs the information in advance.

[0055] S23: Calculate the volume value of the molded part using shape parameters and shape thickness distribution.

[0056] Among them, the volume value of the molded part refers to the volume value corresponding to the injection molded part.

[0057] The length and width dimensions of the injection molded part are retrieved by retrieving the shape parameters. Then, the thickness of each part is determined according to the shape thickness distribution. The volume is calculated by calculating the thickness of each part and the corresponding area. Finally, the volumes of each part are added together to obtain the volume value of the molded part, which is convenient for subsequent use.

[0058] S24: Retrieve type density value, type injection molding variation value, and material adhesion value based on raw material type.

[0059] Among them, the type density value refers to the density of the plastic raw material in solid state at room temperature.

[0060] The type of injection molding variation value refers to the proportional coefficient of volume shrinkage of a certain raw material during the injection molding process due to the influence of temperature and pressure.

[0061] Raw material adhesion value is a quantitative indicator that characterizes the tendency of molten plastic to adhere to or the difficulty of peeling off mold steel.

[0062] By inputting the raw material type into a preset category database, the category density value, category injection molding variation value, and raw material adhesion value are obtained for easy subsequent use.

[0063] The category database contains pre-stored tables of different raw material types and their corresponding density values, injection molding variation values, and raw material adhesion values. The category database is obtained by the operator after pre-entering the data.

[0064] S25: Calculate the weight of the molded part using the type density value and the volume value of the molded part.

[0065] The weight value of the molded part refers to the weight value corresponding to the injection molded part.

[0066] The product between the type density value and the volume value of the molded part is calculated, and the result is used as the weight value of the molded part for convenient subsequent use.

[0067] S26: Determine the injection input amount by combining the weight value of the molded part with the injection variation value of the type.

[0068] Among them, the injection input amount refers to the total weight of the raw material melt that the injection molding mechanism 3 inputs into the rear mold cavity 7 of the rear mold mechanism 1 and the front mold cavity 8 of the front mold mechanism 2 in one injection molding cycle.

[0069] The quotient between the weight of the molded part and the variation value of the injection molding type is calculated, and the calculation result is used as the injection input quantity for convenient subsequent use.

[0070] S27: Generate shape location points based on shape parameters and part weight.

[0071] Among them, the shape location point refers to the air intake location point determined based on the shape.

[0072] By analyzing the shape parameters and the weight of the molded part, shape location points are generated for convenient subsequent use.

[0073] To further ensure the rationality of the shape location points, it is necessary to perform further separate analysis and calculation on the shape location points, which will be explained in detail through the steps shown below.

[0074] The method for generating shape location points includes the following steps: S271: Extract the center point of the shape from the shape parameters.

[0075] The shape center point refers to the geometric center corresponding to the shape of the final injection molded part to be manufactured.

[0076] The shape profile of the injection molded part is read based on the shape parameters, and the center position of the profile is determined as the shape center point for convenient subsequent use.

[0077] S272: Retrieve injection location points based on shape specifications.

[0078] Among them, the injection position point refers to the relative input position point when the injection mechanism 3 inputs the raw material melt into the rear mold cavity 7 of the rear mold mechanism 1 and the front mold cavity 8 of the front mold mechanism 2.

[0079] The injection location is obtained by querying the preset specification database based on the shape specifications, which facilitates subsequent use.

[0080] The specification database contains a pre-stored table mapping different shape specifications to their corresponding injection molding locations. The specification database is retrieved after the operator inputs the information beforehand.

[0081] S273: Determine the symmetrical position point by using the injection position point and the center point of the shape.

[0082] Among them, the symmetrical position point refers to the position point corresponding to the injection position point when it is symmetrical about the center point of the shape.

[0083] Symmetrical positions are obtained by symmetrically positioning the injection points about the center point of the shape, which facilitates subsequent use.

[0084] S274: Determine the weight concentration area based on the shape and thickness distribution.

[0085] The weight concentration area refers to the area where the weight of the injection molded part is concentrated locally.

[0086] By extracting the area covered by the shape and thickness distribution that is significantly thicker than the surrounding area and using it as the weight concentration area, it is easier to use later.

[0087] S275: Select a location point based on the weight concentration area.

[0088] Among them, the selected location point refers to the location point corresponding to the selected location within the weight concentration area.

[0089] By analyzing the areas of concentrated weight, location points can be selected within these areas for easier subsequent use.

[0090] To further ensure the rationality of the selected location points in the region, it is necessary to perform further separate analysis and calculation on the selected location points, which will be explained in detail through the steps shown below.

[0091] The method for selecting location points in a region includes the following steps: S2751: Obtain the number of regions and the center point of each region based on the weight concentration region.

[0092] The number of regions refers to the total number of independent weight concentration regions identified from the entire product. The center point of each region refers to the calculated center location point of each independent weight concentration region.

[0093] The system counts the regions of concentrated weight and uses the count as the number of regions. It then reads the shape contours corresponding to these regions and determines their center positions as the region center points for later use.

[0094] S2752: Calculate the center distance vector value using the region center point and the shape center point.

[0095] The center distance vector value refers to the vector value between the center point of the region and the center point of the shape. The center distance vector value includes both the magnitude and direction of the distance between the center point of the region and the center point of the shape.

[0096] The vector value between the center point of the region and the center point of the shape is calculated, and the calculation result is used as the center distance vector value for convenient subsequent use.

[0097] S2753: Determine the adjustment distance vector value based on the number of regions and the center distance vector value.

[0098] The distance vector value being adjusted refers to the vector value used when adjusting the position.

[0099] By analyzing the number of regions and the center distance vector value, the distance vector value can be adjusted to facilitate subsequent use.

[0100] To further ensure the rationality of the adjusted distance vector value, it is necessary to perform a further separate analysis and calculation on the adjusted distance vector value, which will be explained in detail through the steps shown below.

[0101] The method for determining the distance vector value includes the following steps: S27531: Determine if there is only one region. If yes, execute S27532; if no, execute S27533.

[0102] Specifically, by determining whether there is only one region, it can be determined whether an adjustment is needed in only one direction.

[0103] S27532: Determine the single-area offset vector value based on the center distance vector value, and use the single-area offset vector value as the adjustment distance vector value.

[0104] Among them, the single-region offset vector value refers to the vector value corresponding to the offset in the direction corresponding to a single weight region.

[0105] When there is only one region, it means that only one direction needs to be adjusted. Therefore, the product between the center distance vector value and the preset single-direction vector adjustment coefficient is calculated, and the calculation result is used as the single-region offset vector value. Then, the single-region offset vector value is used as the adjustment distance vector value, thereby improving the accuracy of the obtained adjustment distance vector value.

[0106] The single-direction vector adjustment factor is a factor used to convert the center distance vector value into a single-area offset vector value. The single-direction vector adjustment factor is preset by the operator according to actual needs.

[0107] S27533: Determine the area value of the concentrated region based on the weight concentration region.

[0108] The area value of the concentrated region refers to the area value corresponding to the region where the weight is concentrated.

[0109] When there is more than one region, it means that adjustments need to be made in multiple directions. Therefore, the area of ​​the corresponding region is calculated through the weight concentration region and used as the concentration region area value for convenient subsequent use.

[0110] S27534: Sort the area values ​​of the concentrated area from largest to smallest, and determine the selected area value based on the sorting result.

[0111] The selected area value refers to the area value corresponding to the selected area value of the concentrated area.

[0112] The area values ​​of the concentrated areas are sorted from largest to smallest, and the area values ​​of the concentrated areas corresponding to the preset number of selections in the top column are selected as the selected area values ​​for convenient use later.

[0113] The number of selections refers to the numerical value corresponding to the area value of the concentrated area. The number of selections is preset by the operator according to actual needs.

[0114] In this embodiment, the number of selections is set to 2.

[0115] S27535: Determine the shape area value based on the shape parameters.

[0116] Among them, the shape area value refers to the total area value corresponding to the final injection molded part to be manufactured.

[0117] The area value is obtained by calculating the area value based on the shape parameters, which is convenient for subsequent use.

[0118] S27536: Calculate the area ratio based on the selected area value and shape area value.

[0119] Among them, the area ratio value refers to the ratio between the selected area value and the shape area value.

[0120] The ratio between the selected area value and the shape area value is calculated, and the calculation result is used as the area ratio value for convenient subsequent use.

[0121] S27537: Combine the area ratio value and the center distance vector value to determine the area offset distance vector value, and use the area offset distance vector value as the adjustment distance vector value.

[0122] Among them, the area offset distance vector value refers to the vector value corresponding to the offset based on the area ratio.

[0123] By calculating the product between the area ratio value and the center distance vector value, and using the calculation result as the area offset distance vector value, and then using the area offset distance vector value as the adjustment distance vector value, the accuracy of the obtained adjustment distance vector value is improved.

[0124] S2754: Use the adjusted distance vector value to offset the injection position point from the symmetrical position point to obtain the area offset position point, and use the area offset position point as the area selection position point.

[0125] Among them, the region offset position point is the position point corresponding to the offset direction pointing towards the center position of the weight concentration region.

[0126] When the adjustment distance vector value is a single-area offset vector value, there is only one adjustment distance vector value. Therefore, both the injection molding location point and the symmetrical location point are offset using the adjustment distance vector value, and the offset locations are used as the area offset location points. When the adjustment distance vector value is an area offset distance vector value, there are two adjustment distance vector values. Therefore, the injection molding location point is adjusted using the adjustment distance vector value corresponding to the nearest area center point, and the symmetrical location point is adjusted using the other adjustment distance vector value. The two adjusted locations are then used as area offset location points, and these area offset location points are used as area selection location points, thereby improving the accuracy of the obtained area selection location points.

[0127] S276: Merge the selected location point and the symmetrical location point into a shape location point.

[0128] In this method, the accuracy of the obtained shape location points is improved by merging the selected location points in the region with the symmetrical location points.

[0129] S28: Generate a location connection diagram based on the shape location points and shape specifications.

[0130] The location connection diagram refers to the route corresponding to the introduction of gas into the mold based on the shape and location points.

[0131] By analyzing the shape location points and shape specifications, a location connection diagram is generated for convenient subsequent use.

[0132] To further ensure the rationality of the location connection route diagram, it is necessary to conduct further separate analysis and calculation on the location connection route diagram, which will be explained in detail through the following steps.

[0133] The method for generating a location connection diagram includes the following steps: S281: Extract edge location points based on shape specifications.

[0134] Among them, the specification edge position point refers to the position point corresponding to the circumferential side wall of the mold selected according to the shape.

[0135] The various positions of the circumferential sidewall are retrieved based on the shape specifications to serve as the edge position points of the specifications.

[0136] S282: Select the nearest specification edge location point from the shape location point as the edge selection location point.

[0137] Among them, the edge selection location point refers to the location point corresponding to the edge position after selection.

[0138] By calculating the distance between the shape location point and the specification edge location point, and selecting the specification edge location point with the shortest distance as the edge selection location point, it is convenient for subsequent use.

[0139] S283: Calculate the edge distance between the edge selection point and the shape location point.

[0140] The edge distance value refers to the distance between the edge selection point and the shape location point.

[0141] By calculating the edge distance values ​​corresponding to each shape's location point, it becomes easier to use later.

[0142] S284: Determine the nearest distance value for each shape location point.

[0143] The proximity distance value refers to the distance between two adjacent shape locations.

[0144] Calculating the neighbor distance value facilitates subsequent use.

[0145] S285: Calculate the difference between the edge distance value and the neighboring distance value as the distance deviation value.

[0146] The distance deviation value refers to the difference between the neighboring distance value and the edge distance value corresponding to the same shape and location point.

[0147] By calculating the distance deviation value, it becomes easier to use it later.

[0148] S286: Generate a selected connection route diagram based on the distance deviation value and the edge selection location point, and use the selected connection route diagram as the location connection route diagram.

[0149] The selection of the connection route diagram refers to the route corresponding to introducing gas into the mold based on the distance deviation value.

[0150] By analyzing the distance deviation value and the edge selection location point, a selection connection route map is generated, and the selection connection route map is used as the location connection route map, thereby improving the accuracy of the obtained location connection route map.

[0151] To further ensure the rationality of the selected connection route diagram, it is necessary to perform further separate analysis and calculation on the selected connection route diagram, which will be explained in detail through the steps shown below.

[0152] The method for generating the connection diagram includes the following steps: S2861: Determine whether all distance deviation values ​​are less than the preset deviation benchmark value. If yes, execute S2862; if no, execute S2863.

[0153] The deviation reference value refers to the reference value when no cross-adjustment is required on the line. The deviation reference value is obtained after being pre-input by the operator.

[0154] By checking whether the distance deviation values ​​are all less than the preset deviation benchmark value, it can be determined whether the line needs to be adjusted for crossing.

[0155] S2862: Connect the edge selection points with the shape selection points to form a single-channel circuit diagram, and use the single-channel circuit diagram as the selection connection circuit diagram.

[0156] Among them, a single-channel route diagram refers to a route diagram corresponding to the situation where the channels between various shape and location points are not interconnected.

[0157] When the distance deviation values ​​are all less than the preset deviation benchmark values, it means that there is no need to cross-adjust the line at this time. Therefore, by connecting the edge selection position points with the corresponding shape position points separately, a single-channel line diagram is formed, and the single-channel line diagram is used as the selection connection line diagram to improve the accuracy of the obtained selection connection line diagram.

[0158] S2863: Mark the edge selection location point corresponding to the distance deviation value that is not less than the preset deviation benchmark value as the pre-deletion location point.

[0159] Among them, the pre-deletion position point refers to the position point that has a probability of being deleted.

[0160] When the distance deviation values ​​are not all less than the preset deviation benchmark value, it means that the line needs to be cross-adjusted. Therefore, the edge selection points corresponding to the distance deviation values ​​that are not less than the preset deviation benchmark value are selected and marked as pre-deletion point points for easy use later.

[0161] S2864: Determine the remaining position points based on the edge selection position points and the pre-deletion position points.

[0162] The remaining position points refer to the position points that remain after deletion.

[0163] The difference between the number of edge selection points and the number of pre-deleted points is calculated. When the difference is greater than 2, the edge selection points excluding the pre-deleted points are directly used as the remaining points. When the difference is not greater than 2, the edge selection points corresponding to the two distance deviation values ​​closest to the deviation benchmark value are selected as the remaining points for convenient use later.

[0164] S2865: Connect the remaining location points with the shape location points to form a cross-channel route diagram, and use the cross-channel route diagram as the selected connection route diagram.

[0165] Among them, the cross-channel route map refers to the route map corresponding to situations where there are interconnections.

[0166] By connecting the remaining location points with the shape location points, a complete route is formed as a cross-channel route map, and the cross-channel route map is used as the selection connection route map, thereby improving the accuracy of the obtained selection connection route map.

[0167] S29: Determine the positional blowing parameters by using the positional connection diagram, the weight value of the molded part and the material adhesion value, and use the shape specification as the mold specification, the injection input quantity as the material requirement quantity, the positional blowing parameters as the blowing output parameters, and the positional connection diagram as the blowing circuit diagram.

[0168] Among them, the position blowing parameters refer to the pressure and duration parameters corresponding to blowing air onto the injection molded part based on the shape and position point.

[0169] The required total blowing pressure and blowing time are determined based on the weight of the molded part and the adhesion value of the raw material. The number of input ports is determined based on the position connection diagram. The total blowing pressure is then distributed proportionally according to the number of input ports and the number of output ports corresponding to each input port to obtain the blowing pressure of each input port. Finally, the blowing pressure and blowing time of each input port are combined as position blowing parameters.

[0170] By using shape specifications as mold specifications, injection input quantity as raw material requirement quantity, position blowing parameters as blowing output parameters, and position connection diagram as blowing circuit diagram, the accuracy of the obtained mold specifications, raw material requirement quantity, blowing output parameters, and blowing circuit diagram can be improved.

[0171] S3: Process the front mold mechanism 2 according to the mold specifications and the air blowing circuit diagram, and select the rear mold mechanism 1, injection mechanism 3 and ejection mechanism 4 according to the mold specifications for assembly.

[0172] The process involves selecting the front mold mechanism 2 and the rear mold mechanism 1 based on the mold specifications, processing the front mold mechanism 2 according to the air blowing circuit diagram, and then assembling the front mold mechanism 2, the rear mold mechanism 1, the injection mechanism 3, and the ejection mechanism 4 to facilitate subsequent assembly.

[0173] S4: Control the rear mold mechanism 1, front mold mechanism 2 and injection molding mechanism 3 to perform injection molding to produce injection molded parts according to the raw material demand.

[0174] In this process, by controlling the injection molding mechanism 3 to input raw materials into the rear mold mechanism 1 and the front mold mechanism 2 according to the required amount of raw materials, injection molding is performed to obtain injection molded parts.

[0175] S5: Output gas according to the blowing output parameters and control the ejection mechanism 4 to eject the injection molded part.

[0176] By outputting gas through the blowing output parameters, the injection molded part is effectively oriented and sticks to the mold. Then, by controlling the ejection mechanism 4 to eject the injection molded part, the product can be easily demolded, thereby improving production efficiency and product consistency.

[0177] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for directional adhesive injection molding of a motorcycle windshield plastic panel, characterized in that, include: S1: Obtain the parameters of the molded part and the material type; S2: Determine the mold specifications, raw material requirements, air blowing circuit diagram, and air blowing output parameters based on the molded part parameters and the raw material type; S3: Process the front mold mechanism (2) according to the mold specifications and the air blowing circuit diagram, and select the rear mold mechanism (1), injection mechanism (3) and ejection mechanism (4) according to the mold specifications for assembly; S4: Control the rear mold mechanism (1), the front mold mechanism (2) and the injection molding mechanism (3) to perform injection molding to produce injection molded parts according to the raw material demand; S5: Output gas according to the blowing output parameters and control the ejection mechanism (4) to eject the injection molded part.

2. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 1, characterized in that, The methods for generating the mold specifications, the raw material requirements, the air blowing circuit diagram, and the air blowing output parameters include: S21: Extract shape parameters and shape thickness distribution based on the molded part parameters; S22: Select the shape specifications according to the shape parameters; S23: Calculate the volume value of the molded part using the shape parameters and the shape thickness distribution; S24: Retrieve the type density value, type injection molding variation value, and material adhesion value based on the material type; S25: Calculate the weight of the molded part using the density value of the type and the volume value of the molded part; S26: Determine the injection input amount by combining the weight value of the molded part with the injection variation value of the type; S27: Generate shape position points based on the shape parameters and the weight value of the molded part; S28: Generate a position connection diagram based on the shape location points and the shape specifications; S29: Determine the positional blowing parameters using the positional connection diagram, the weight value of the molded part, and the material adhesion value, and use the shape specification as the mold specification, the injection input amount as the material requirement, the positional blowing parameters as the blowing output parameters, and the positional connection diagram as the blowing circuit diagram.

3. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 2, characterized in that, The method for generating the shape location points includes: S271: Extract the shape center point from the shape parameters; S272: Retrieve the injection position point based on the shape specifications; S273: Determine a symmetrical position point by means of the injection position point and the center point of the shape; S274: Determine the weight concentration area based on the shape and thickness distribution; S275: Select a location point based on the weight concentration area; S276: Merge the selected location point in the region with the symmetrical location point to form the shape location point.

4. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 3, characterized in that, The method for selecting location points in the region includes: S2751: Obtain the number of regions and the center point of each region based on the weight concentration region; S2752: Calculate the center distance vector value between the center point of the region and the center point of the shape; S2753: Determine the adjustment distance vector value based on the number of regions and the center distance vector value; S2754: Use the adjusted distance vector value to offset the injection position point from the symmetrical position point to obtain the area offset position point, and use the area offset position point as the area selection position point.

5. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 4, characterized in that, The method for determining the adjusted distance vector value includes: S27531: Determine whether the number of regions is only one; S27532: If yes, then determine the single-region offset vector value based on the center distance vector value, and use the single-region offset vector value as the adjustment distance vector value; S27533: If not, then determine the area value of the concentrated region based on the weight concentration region; S27534: Sort the area values ​​of the concentrated area from largest to smallest, and determine the selected area value based on the sorting result; S27535: Determine the shape area value based on the shape parameters; S27536: Calculate the area ratio based on the selected area value and the shape area value; S27537: Combine the area ratio value and the center distance vector value to determine the area offset distance vector value, and use the area offset distance vector value as the adjustment distance vector value.

6. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 2, characterized in that, The method for generating the location connection route diagram includes: S281: Extract the edge position points of the specifications according to the shape specifications; S282: Select the nearest edge position of the specified shape position point as the edge selection position point; S283: Calculate the edge distance value between the edge selection point and the shape position point; S284: Determine the nearest distance value for each of the shape location points; S285: Calculate the difference between the edge distance value and the neighbor distance value as a distance deviation value; S286: Generate a selection connection route diagram based on the distance deviation value and the edge selection location point, and use the selection connection route diagram as the location connection route diagram.

7. The method for directional bonding and injection molding of a motorcycle windshield plastic panel according to claim 6, characterized in that, The method for generating the selected connection route diagram includes: S2861: Determine whether all the distance deviation values ​​are less than the preset deviation reference value; S2862: If yes, then connect the edge selection point with the shape point to form a single-channel circuit diagram, and use the single-channel circuit diagram as the selection connection circuit diagram; S2863: If not, mark the edge selection position point corresponding to the distance deviation value which is not less than the preset deviation benchmark value as the pre-deletion position point; S2864: Determine the remaining position points based on the edge selection position points and the pre-deletion position points; S2865: Connect the remaining position points with the shape position points to form a cross-channel route diagram, and use the cross-channel route diagram as the selected connection route diagram.

8. A directional adhesive injection molding die for a motorcycle windshield plastic panel, characterized in that, A method for implementing a directional adhesive injection molding of a motorcycle windshield plastic panel as described in any one of claims 1 to 7 includes: The rear mold mechanism (1) has a rear mold cavity (7) for filling and injection molding of raw materials. The front mold mechanism (2) is located on the side of the rear mold mechanism (1) where the rear mold cavity (7) is opened. The side near the rear mold mechanism (1) has a front mold cavity (8) for filling raw materials and injection molding, and has a number of air holes (9) for gas to enter the front mold cavity (8). The injection molding mechanism (3) is located on the side of the front mold mechanism (2) away from the rear mold mechanism (1) and is used to inject raw materials into the front mold cavity (8) and the rear mold cavity (7) to form injection molded parts; Ejection mechanism (4) is located on the side of the rear mold mechanism (1) away from the front mold mechanism (2) and is used to eject the injection molded part on the rear mold mechanism (1) toward the front mold mechanism (2); The gas delivery mechanism (5) is located on the side of the front mold mechanism (2) away from the rear mold mechanism (1) and is used to input gas into the air hole (9).

9. A motorcycle windshield plastic plate directional adhesive injection molding die according to claim 8, characterized in that, Also includes: The protective mechanism (6) is located on the side of the front mold mechanism (2) away from the rear mold mechanism (1) to protect the injection molding mechanism (3) and the gas supply mechanism (5), and has a placement slot (10) for placing the injection molding mechanism (3) and the gas supply mechanism (5).

10. A motorcycle windshield plastic plate directional adhesive injection molding die according to claim 8, characterized in that: Both the rear mold mechanism (1) and the front mold mechanism (2) are provided with a number of cooling holes (11) for cooling water to circulate.

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