Method and equipment for digitally pressing patterns of cellulose acetate fiber glasses rubber sheet

Abstract

The invention is suitable for the technical field of glasses rubber plate manufacturing, and particularly relates to a digitized pattern pressing method and equipment for a cellulose acetate glasses rubber plate, and the method comprises the following steps: obtaining the temperature of a pressing mold in real time, and sending a first standby signal when the temperature of the pressing mold reaches a first temperature; when it is detected that the plate is fixed to the pressing area, a second standby signal is sent, and when it is detected that the plate is not fixed to the pressing area, the second standby signal is canceled; when the first standby signal and the second standby signal are prepared at the same time, the pattern digital pressing equipment carries out a pressing process of a fixed pressure-time relation curve, when the pressing process is finished, a second temperature is recorded, and the first standby signal is cancelled; the second temperature is compared with the third temperature, and the first thickness in the grinding and polishing process is determined according to the difference between the third temperature and the second temperature. According to the method, the depth consistency of the finally obtained patterns can be improved, and the problems that an existing printing and pressing method is poor in printing consistency and low in production speed are solved.

Description

Technical Field

[0001] This application belongs to the field of eyeglass film manufacturing technology, and particularly relates to a method and equipment for digitally pressing patterns onto cellulose acetate eyeglass film. Background Technology

[0002] Cellulose acetate plastic is an easily produced polymer with properties such as low allergenicity, high elasticity, flame retardancy, oil resistance, low optimum plasticity temperature, and strong melt flow. It is an ideal material for eyeglass frames. The patterns on eyeglass frames not only enhance the aesthetics of the glasses but also indicate the brand, making it an important processing technique.

[0003] Existing printing pressing methods are usually traditional manual or semi-automatic pattern pressing methods, which have problems such as poor printing consistency and slow production speed. Existing fully automatic pattern pressing methods can only make the pressing pressure and pressing time the same for each pressing, but it is difficult to match and unify the pressing temperature, pressing pressure and pressing time for each pressing. This results in inconsistent printing depth under fully automatic pattern pressing. Therefore, there is a need for a fully automatic pattern pressing method that can improve the consistency of printing depth. Summary of the Invention

[0004] This application provides a method and equipment for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets, which can solve the problems of poor printing consistency and slow production speed in existing printing pressing methods.

[0005] In a first aspect, embodiments of this application provide a method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets. This method is applied to a digital pressing equipment, which performs pressing and polishing processes on the cellulose acetate eyeglass adhesive sheets. The method includes: The temperature of the pressing mold is acquired in real time, and a first standby signal is sent when the temperature of the pressing mold reaches a first temperature; wherein, the first standby signal is used to reflect that the pressing mold is ready to press, and in response to the first standby signal, the pressing mold will stop heating, and the first temperature is greater than the optimal plasticity temperature of the sheet. A second standby signal is sent when the sheet material is detected to be fixed in the pressing area, and the second standby signal is canceled when the sheet material is detected to be not fixed in the pressing area; wherein, the second standby signal is used to reflect that the sheet material is ready for pressing; When the first standby signal and the second standby signal are prepared simultaneously, the pattern digital pressing device performs a pressing process based on a fixed pressure-time relationship curve. When the pressing process ends, the second temperature is recorded and the first standby signal is canceled. The second temperature refers to the temperature of the pressing mold at the end of the pressing process. The second temperature is compared with the third temperature, and the first thickness of the grinding and polishing process is determined based on the difference between the third temperature and the second temperature; wherein, the third temperature is the temperature after the pressing process of the pressing mold under standard conditions, and the first thickness refers to the grinding thickness when the plate is ground and polished. In response to the first thickness, the pattern digital pressing equipment performs the corresponding grinding and polishing process.

[0006] The technical solutions described in this application embodiment have at least the following technical effects: The digital pressing method for patterns on cellulose acetate eyeglass adhesive sheets provided in this application firstly involves acquiring the temperature of the pressing mold in real time and sending a first standby signal when the temperature of the pressing mold reaches a first temperature. In this step, the pressing mold is continuously heated until its temperature reaches the first temperature, at which point the first standby signal is sent, and the pressing mold stops heating in response to the first standby signal. The first standby signal also reflects whether the pressing mold is ready for pressing. Secondly, a second standby signal is sent when the sheet is detected to be fixed in the pressing area, and canceled when the sheet is detected to be not fixed in the pressing area. In this step, the method detects whether the sheet is located in the pressing area; if it is in place, the second standby signal is sent, and if it is not in place, the second standby signal is canceled, reflecting whether the sheet is ready for pressing. Then, when the first and second standby signals are prepared simultaneously, the pattern digitization pressing equipment performs a pressing process based on a fixed pressure-time curve. At the end of the pressing process, the second temperature is recorded, and the first standby signal is canceled. In this step, the pattern digitization pressing equipment performs the pressing process while the pressing mold and the sheet are prepared simultaneously. During the pressing process, the pressing pressure and pressing time are kept constant. At the end of the pressing process, the temperature of the pressing mold is recorded, transforming the three elements of pressure, temperature, and time in the pattern pressing process into a single element of temperature change. This allows for easier prediction of the pressing process results. Furthermore, because heat is transferred from the pressing mold to the sheet, the temperature of the pressing mold may not meet the temperature requirements of the pressing process, so the first standby signal is canceled. Finally, the second temperature is compared with the third temperature, and the first thickness for the polishing process is determined based on the difference between the third and second temperatures. In this step, the second and third temperatures are first compared to obtain the temperature change of the pressing mold, and then the first thickness is inferred based on the temperature change. The first thickness is the polishing thickness of the pattern digitization pressing equipment during the polishing process, ensuring consistent pattern depth. In this method, the three elements of pressure, temperature and time in the pattern pressing process are transformed into a single element of temperature change before and after pressing by an automated pressing method. The depth of the pressed pattern is then predicted from the single element of temperature change before and after pressing. Finally, the grinding depth is controlled during the grinding and polishing process to improve the consistency of the final pattern depth. This method can solve the problems of poor printing consistency and slow production speed in existing printing pressing methods.

[0007] Secondly, embodiments of this application provide a pattern digital pressing device, applied to a pattern digital pressing equipment. The pattern digital pressing equipment performs pressing and polishing processes on cellulose acetate eyeglass adhesive sheets. The device includes: A temperature confirmation unit is used to acquire the temperature of the pressing mold in real time and send a first standby signal when the temperature of the pressing mold reaches a first temperature; wherein, the first standby signal is used to reflect that the pressing mold is ready to press, and in response to the first standby signal, the pressing mold will stop heating, and the first temperature is greater than the optimal plasticity temperature of the sheet. The positioning confirmation unit is used to send a second standby signal when it detects that the sheet material is fixed in the pressing area, and to cancel the second standby signal when it detects that the sheet material is not fixed in the pressing area; wherein, the second standby signal is used to reflect that the sheet material is ready for pressing; The pressing logic unit is used to perform a pressing process based on a fixed pressure-time relationship curve by the pattern digitization pressing device when the first standby signal and the second standby signal are prepared simultaneously, record a second temperature when the pressing process ends, and cancel the first standby signal; wherein, the second temperature refers to the temperature of the pressing mold at the end of the pressing process; The grinding thickness determination unit is used to compare the second temperature with the third temperature and determine the first thickness of the grinding and polishing process based on the difference between the third temperature and the second temperature; wherein, the third temperature is the temperature after the pressing process of the pressing mold under standard conditions, and the first thickness refers to the grinding thickness when the plate is ground and polished. In response to the first thickness, the pattern digital pressing equipment performs the corresponding grinding and polishing process.

[0008] Thirdly, embodiments of this application provide a pattern digital pressing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method described in any of the first aspects above.

[0009] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in any of the first aspects above.

[0010] Fifthly, embodiments of this application provide a computer program product that, when run on a pattern digitization pressing device, causes the pattern digitization pressing device to execute the cellulose acetate eyeglass adhesive sheet pattern digitization pressing method described in any of the first aspects above.

[0011] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic flowchart of a method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the pattern digital pressing device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the pattern digital pressing device provided in the embodiments of this application. Detailed Implementation

[0014] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0015] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0016] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0017] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0018] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0020] In related technologies, existing printing pressing methods are usually traditional manual or semi-automatic pattern pressing methods, which have problems such as poor printing consistency and slow production speed. Existing fully automatic pattern pressing methods can only make the pressing pressure and pressing time the same for each pressing, but it is difficult to match and unify the pressing temperature, pressing pressure and pressing time for each pressing. This results in inconsistent printing depth under fully automatic pattern pressing. Therefore, there is a need for a fully automatic pattern pressing method that can improve the consistency of printing depth.

[0021] To address the aforementioned problems, this application provides a method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets. In this method, firstly, the temperature of the pressing mold is acquired in real time, and a first standby signal is sent when the temperature of the pressing mold reaches a first temperature. During this step, the pressing mold is continuously heated until its temperature reaches the first temperature, at which point the first standby signal is sent, and the pressing mold stops heating in response to the first standby signal. The first standby signal also reflects whether the pressing mold is ready for pressing. Secondly, a second standby signal is sent when the sheet is detected to be fixed in the pressing area, and canceled when the sheet is detected to be not fixed in the pressing area. This step detects whether the sheet is located in the pressing area; the second standby signal is sent when it is in place and canceled when it is not, reflecting whether the sheet is ready for pressing. Then, when the first and second standby signals are prepared simultaneously, the pattern digitization pressing equipment performs a pressing process based on a fixed pressure-time curve. At the end of the pressing process, the second temperature is recorded, and the first standby signal is canceled. In this step, the pattern digitization pressing equipment performs the pressing process while the pressing mold and the sheet are prepared simultaneously. During the pressing process, the pressing pressure and pressing time are kept constant. At the end of the pressing process, the temperature of the pressing mold is recorded, transforming the three elements of pressure, temperature, and time in the pattern pressing process into a single element of temperature change. This allows for easier prediction of the pressing process results. Furthermore, because heat is transferred from the pressing mold to the sheet, the temperature of the pressing mold may not meet the temperature requirements of the pressing process, so the first standby signal is canceled. Finally, the second temperature is compared with the third temperature, and the first thickness for the polishing process is determined based on the difference between the third and second temperatures. In this step, the second and third temperatures are first compared to obtain the temperature change of the pressing mold, and then the first thickness is inferred based on the temperature change. The first thickness is the polishing thickness of the pattern digitization pressing equipment during the polishing process, ensuring consistent pattern depth. In this method, the three elements of pressure, temperature and time in the pattern pressing process are transformed into a single element of temperature change before and after pressing by an automated pressing method. The depth of the pressed pattern is then predicted from the single element of temperature change before and after pressing. Finally, the grinding depth is controlled during the grinding and polishing process to improve the consistency of the final pattern depth. This method can solve the problems of poor printing consistency and slow production speed in existing printing pressing methods.

[0022] The method for digitally pressing patterns on cellulose acetate eyeglass adhesive sheets provided in this application embodiment can be applied to a pattern digital pressing device. In this case, the pattern digital pressing device is the executing entity of the method for digitally pressing patterns on cellulose acetate eyeglass adhesive sheets provided in this application embodiment. This application embodiment does not impose any restrictions on the specific type of pattern digital pressing device.

[0023] For example, a pattern digital pressing device may include a pressing device, a heating device, a temperature measuring device, a sheet material transfer device, a grinding and polishing device, and a control device. The control device is communicatively connected to the pressing device, heating device, temperature measuring device, sheet material transfer device, and grinding and polishing device. The pressing device is used to press patterns onto the sheet material. The pressing device can be a servo electric cylinder with a pressure sensor and a pressing mold. The servo electric cylinder with the pressure sensor can continuously press at a fixed pressure. The pressing mold is a heat-spreading plate mold made of a high thermal conductivity material. The heating device is used to heat the pressing mold. The heating device can be a heating resistor built into the pressing mold. The temperature measuring device is used to acquire the temperature of the pressing mold in real time. The temperature measuring device can be a thermoelectric sensor installed on the pressing mold. The sheet material transfer device is used to continuously transfer new sheet materials to the pressing area. The sheet material transfer device can be a conveyor belt capable of fixing the sheet materials. The grinding and polishing device is used to grind and polish the sheet material after pressing the patterns. The grinding and polishing device can be an automatic grinding and polishing machine that can grind to different depths before polishing. The control device can control the pressing device to press according to different pressure-time curves, control the heating device to heat or stop heating the pressing mold, control the temperature measuring device to detect the temperature of the pressing mold, control the sheet material transfer device to transfer a new sheet material to the pressing area, and control the grinding and polishing device to perform grinding and polishing processes of different depths on the sheet material. In the pattern digital pressing equipment, the pressing device and the grinding and polishing device intersect with the sheet material transfer device, and the sheet material transferred by the sheet material transfer device first passes through the pressing device and then through the grinding and polishing device.

[0024] The control device can be a microcontroller, microprocessor, tablet computer, netbook, desktop computer, computer, laptop computer, etc.

[0025] To better understand the digital pressing method for patterns on cellulose acetate eyeglass adhesive sheets provided in this application, the specific implementation process of the digital pressing method for patterns on cellulose acetate eyeglass adhesive sheets provided in this application will be described below by way of example.

[0026] Figure 1 This illustration shows a schematic flowchart of a method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets according to an embodiment of this application. The method is applied to a digital pressing equipment, which performs pressing and polishing processes on the cellulose acetate eyeglass adhesive sheets. The method includes: S100: The temperature of the pressing die is acquired in real time, and a first standby signal is sent when the temperature of the pressing die reaches a first temperature. The first standby signal indicates that the pressing die is ready to press. In response to the first standby signal, the pressing die will stop heating, and the first temperature is higher than the optimal plasticity temperature of the sheet.

[0027] It is understood that the temperature of the pressing mold is monitored in real time by a temperature measuring device. When the pressing mold is heated to a temperature greater than or equal to a first temperature by the heating device, the control device sends a first standby signal. The heating device responds to the first standby signal by stopping heating the pressing mold. The first standby signal also indicates that the pressing mold is ready for pressing. The temperature of the pressing mold can be the average temperature of multiple parts of the pressing mold. The first temperature is at least greater than the optimum plasticity temperature of the cellulose acetate sheet.

[0028] Optionally, the method also includes: S110, when the duration of the first standby signal exceeds the threshold duration, the first standby signal is automatically cancelled.

[0029] It is understandable that when the first standby signal is maintained, the heat of the pressing mold will spontaneously dissipate to the surroundings. As time increases, the temperature of the pressing mold will not be within the tolerance range of the first temperature. Therefore, it is necessary to set a threshold duration. When the duration of the first standby signal exceeds the threshold duration, the first standby signal will be automatically canceled so that the pressing mold can be reheated.

[0030] This setting can prevent the temperature of the pressing mold from failing to meet requirements if the first standby signal is maintained for too long, thus improving the consistency of the pattern pressing effect.

[0031] S200: When the sheet material is detected to be fixed in the pressing area, a second standby signal is sent; when the sheet material is detected to be not fixed in the pressing area, the second standby signal is canceled. The second standby signal is used to indicate that the sheet material is ready for pressing.

[0032] It is understandable that the sheet material transfer device can be aligned with the pressing area by means of laser points or mechanical clamping points, so as to determine whether the sheet material has reached the pressing area. When the sheet material is detected to be fixed in the pressing area, the control device sends a second standby signal. When the sheet material is not fixed in the pressing area, the second standby signal is automatically canceled. The second standby signal is used to reflect that the sheet material is ready to be pressed.

[0033] S300: When the first standby signal and the second standby signal are prepared simultaneously, the pattern digital pressing equipment performs a pressing process based on a fixed pressure-time relationship curve. At the end of the pressing process, the second temperature is recorded, and the first standby signal is canceled. The second temperature refers to the temperature of the pressing mold at the end of the pressing process.

[0034] It is understandable that when the first and second standby signals are prepared simultaneously, it means that the pressing mold and the sheet material are in place and the pressing process can begin. During the pressing process, the pressing device presses according to a fixed pressure-time curve to control variables (in the process of pressing patterns, the three factors affecting the consistency of the pattern are pressure, temperature, and time; if these three factors are highly consistent, the produced pressed pattern will also be highly consistent). After pressing is completed, the temperature of the pressing mold at this time is recorded, which is the second temperature. As the only factor affecting the pressing effect, the second temperature can reflect the characteristics of the pressed pattern. Furthermore, after the pressing process is completed, the first standby signal is automatically canceled, allowing the heating device to heat up in preparation for the next pressing process.

[0035] S400 compares the second temperature with the third temperature and determines the first thickness of the grinding and polishing process based on the difference between the third temperature and the second temperature. The third temperature is the temperature after the pressing process by the pressing mold under standard conditions, and the first thickness refers to the grinding thickness during the grinding and polishing process of the board. In response to the first thickness, the pattern digitization pressing equipment performs the corresponding grinding and polishing process.

[0036] It's understandable that a standard pressed board can be set as a standard sample. The pressed pattern of the standard sample meets the user's requirements. The third temperature is the temperature of the pressing mold recorded at the end of the pressing process for the standard sample; that is, the third temperature is the second temperature under standard conditions. Comparing the second and third temperatures can reflect the characteristics of the pattern on the current board, such as its depth. This is because the difference between the third and second temperatures, ΔT = ΔQ / the specific heat capacity of the pressing mold, where ΔT = third temperature - second temperature. ΔQ refers to the difference between the heat absorption of the current board and the heat absorption of the standard sample board during the pressing process. Therefore, a larger ΔT means that the board absorbs more heat during the pressing process, i.e., the board temperature is higher. A higher board temperature results in a deeper pattern during the pressing process (higher board temperatures lead to greater melting and stronger fluidity, making it easier to press deeper patterns). Conversely, a smaller ΔT results in a shallower pattern. ΔT can also be negative; when ΔT is negative, the pressed pattern is shallower than the pattern of the standard sample. For boards with ΔT greater than 0, the approximate linear ratio k can be obtained based on the approximate linear relationship between ΔT and pattern depth. Then, ΔT × k is used to obtain the first thickness. The first thickness refers to the grinding thickness during the grinding and polishing process. After grinding to the first thickness, the consistency of the pattern between the board and the standard sample is improved. However, for boards with ΔT less than 0, the pattern depth is shallower than that of the standard sample. Since the grinding and polishing process can only reduce the pattern depth, it is impossible to obtain the first thickness of boards with ΔT less than 0. The first thickness of boards with ΔT less than 0 can be regarded as 0. Alternatively, boards with ΔT less than 0 can be melted and solidified again to obtain a new board.

[0037] This setup, through automated pressing, transforms the three elements of pressure, temperature, and time in the pattern pressing process into a single element: the temperature change before and after pressing. The depth of the pressed pattern can then be predicted from this single element of temperature change before and after pressing. Finally, the grinding depth is controlled during the polishing process to improve the consistency of the final pattern depth. This solves the problems of poor printing consistency and slow production speed in existing printing pressing methods.

[0038] Optionally, when determining the first thickness, the method further includes: S410: When the ΔT of a sheet material is less than 0, a supplementary pressing command is sent. Here, ΔT = third temperature - second temperature. In response to the supplementary pressing command, the pattern digitization pressing equipment performs an additional pressing process on the sheet material.

[0039] It's understandable that the first thickness of boards with a ΔT less than 0 cannot be determined in step S400. The fundamental reason is that the first thickness of boards with a ΔT less than 0 is also less than 0, and the grinding and polishing steps cannot grind a negative first thickness, thus failing to process boards with a ΔT less than 0. In this step, when a board's ΔT is detected to be less than 0, a supplementary pressing command is sent. The pattern digitization pressing equipment then responds to this command, performing an additional pressing process on the board, increasing its pressing depth and making the first thickness greater than 0. Therefore, the pattern consistency can be improved through the grinding and polishing steps. The additional pressing process can use a pressing setting with a smaller pressing effect to prevent the board from being damaged by excessive pressing.

[0040] S420, the first thickness is obtained based on ΔT from the two pressing processes.

[0041] It is understandable that if the two pressing processes use the same pressing settings (i.e., the three elements of pressure, temperature, and time are the same), then the ΔT values ​​of the two pressing processes are added together, plus the difference between the first and third temperatures, and multiplied by k (approximate linear ratio) to obtain the first thickness, i.e., the first thickness = (ΔT1 + ΔT2 + first temperature - third temperature) × k, where ΔT1 and ΔT2 are the ΔT values ​​of the two pressing processes; if the two pressing processes use different pressing settings, then the approximate linear ratio of the two pressing processes will also be different, divided into k1 and k2, then the first thickness = ΔT1 × k1 + (ΔT2 + first temperature - third temperature) × k2.

[0042] With this setup, by performing another pressing process, even boards with a ΔT value less than 0 can be subjected to the grinding and polishing process in this method, thereby improving the one-time application of the pattern.

[0043] Optionally, when determining the first thickness, the method further includes: S430: Obtain the ΔT values ​​less than 0 for all plates, and calculate the margin temperature based on the minimum value among all ΔT values ​​less than 0. Where ΔT = third temperature - second temperature.

[0044] It is understandable that, in addition to the pressing process again, sufficient pattern depth margin can be left in the first pressing process. That is, pressing a little deeper in the first pressing process, so that the pattern depth margin is sufficient to buffer the depth error generated in the pressing process. In the historical record of ΔT of the pressed board, the minimum value of all ΔT less than 0 can be found and used as the margin temperature to leave sufficient pattern depth margin.

[0045] S440, correct the first temperature by adding a margin temperature to it. This correction will change the second and third temperatures, but because the changes are equal, it will not affect ΔT, and consequently, the value of the first thickness.

[0046] It is understandable that adding the reserve temperature to the first temperature increases the pressing temperature of the first pressing process, thereby increasing the depth of the first pressing process. The reserve temperature, as the minimum value of ΔT less than 0 in the historical records, represents the maximum temperature reserve required in the previous pressing process. The temperature reserve and the pattern depth reserve have a proportional relationship of k (approximately linear ratio). Therefore, after adding the reserve temperature to the first temperature, sufficient pattern depth reserve is left in the first pressing process.

[0047] S450 determines the allowance thickness based on the allowance temperature, and then corrects the first thickness based on the allowance thickness.

[0048] It's understandable that after the first temperature correction, the corresponding second and third temperatures will also change, but the average magnitude of the change is the same. That is, the first temperature correction won't affect ΔT, and since the first thickness is obtained from ΔT, the value of the first thickness won't change either. This is inconsistent with reality, therefore it's necessary to correct the first thickness. Multiplying the allowance temperature by k (approximately a linear ratio) yields the allowance thickness, which is the pattern depth allowance left during the first pressing process. Correcting the first thickness involves adding the allowance thickness to the first thickness to obtain the corrected first thickness.

[0049] With this setup, the pattern depth margin left during the first pressing process allows even boards with an initial ΔT value less than 0 to be used in the grinding and polishing process of this method without needing to repeat the pressing process, thus improving the one-time success rate of the pattern.

[0050] Optionally, before obtaining the residual temperature, the method further includes: S451, calculate the outlier degree of all ΔT values, and then exclude ΔT values ​​that are greater than the threshold.

[0051] It's understandable that we first calculate the average 'a' of all ΔT values, then calculate the standard deviation 'b' of all ΔT values, and let the acceptable range be (a+3b, a-3b). ΔT data outside this range are then excluded. The standard deviation 'b' reflects the uniform degree of outlier across all ΔT values.

[0052] This setting sorts out all the abnormal data in ΔT.

[0053] S452 sets the maximum values ​​of allowance thickness and allowance temperature based on the outlier degree of ΔT.

[0054] It can be understood that the acceptable range (a+3b, a-3b) is the limiting range of ΔT, then the maximum value of the allowance temperature is 3b, and the maximum value of the allowance thickness is 3b×k.

[0055] This setting can limit the allowance thickness and allowance temperature within a suitable range, preventing the pressing process from being too deep and causing damage to the board.

[0056] Optionally, the pattern digital pressing equipment includes a sheet material transfer device for transferring the sheet material, and the method further includes: S460 sends a third signal during the pressing or polishing process of the pattern digitization pressing equipment, and automatically cancels the third signal when the equipment is not in operation. The third signal indicates that the pattern digitization pressing equipment is processing; in response to the third signal, the sheet material transfer device cannot operate.

[0057] It is understandable that, under unexpected circumstances or with the addition of other functions, the sheet material transfer device may activate during the pressing or polishing process, potentially causing malfunction or damage to the pattern digitization pressing equipment. To prevent this, it is necessary to add a logic layer to prevent such situations. Therefore, a third signal is sent when the pattern digitization pressing equipment is performing the pressing or polishing process, and the third signal is automatically canceled when the pressing or polishing process is not in progress. In response to the third signal, the sheet material transfer device will not operate.

[0058] This configuration further prevents malfunctions in the digital pattern pressing equipment caused by unexpected situations or program bugs, thus improving the safety of the pattern pressing process.

[0059] Optionally, S470 preheats the sheet material before it is fixed in the pressing area, such that the temperature after preheating is lower than a first temperature, a second temperature, or a third temperature.

[0060] It is understandable that the sheet material can be preheated to improve production efficiency, thereby reducing the heating time of the pressing mold and thus increasing production efficiency. Furthermore, the preheated temperature of the sheet material must not exceed the first, second, or third temperature; otherwise, it will hinder the spontaneous transfer of heat from the pressing mold to the sheet material.

[0061] This design improves the production efficiency of pattern pressing, reduces the temperature variation range of the pressing die, and increases the working life of the pressing die.

[0062] Optionally, the S480, during the pressing process, is divided into a pressure-increasing section, a pressure-holding section, and a pressure-reducing section. In the pressure-increasing section, the pressure is increased to the maximum pressure at a fixed pressure increase rate and a fixed increase time. In the pressure-holding section, the pressure is maintained at a fixed holding time. In the pressure-reducing section, the pressing die moves away from the sheet material at a uniform speed. The maximum pressure in the pressure-increasing section is greater than the pressure-holding pressure in the pressure-holding section. In the pressure-reducing section, the temperature of the pressing die is collected at a fixed frequency, and the average of the collected temperatures is the second temperature.

[0063] The pressing process can be divided into a pressurizing section, a holding section, and a depressurizing section. The pressurizing section presses the sheet to a certain depth, increasing pressure at a fixed rate and for a fixed time until reaching maximum pressure. After reaching maximum pressure, the sheet enters the holding section, where a fixed holding pressure is maintained for a fixed time to shape the pattern and relieve stress. Finally, the sheet enters the depressurizing section, where there are no pressure requirements; only the pressing die is controlled to move away from the sheet at a uniform speed. To prevent further pressing depth in the holding section, the maximum pressure in the pressurizing section is greater than the holding pressure in the holding section. Furthermore, the temperature of the pressing die is collected at a fixed frequency in the depressurizing section, and the average of these multiple temperatures is taken as the second temperature. Because the sheet has already formed a fixed pressing pattern in the holding section, the pressing die and the sheet are not in contact in the depressurizing section. Therefore, the second temperature obtained in this way is more stable and has better error resistance than the second temperature collected after the pressing process is completed.

[0064] This setting improves the pressing effect of the pattern and increases the stability of the second temperature, giving it better error resistance.

[0065] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0066] Corresponding to the digital pressing method for patterns on cellulose acetate eyeglass adhesive sheets described in the above embodiments, this application also provides a digital pressing device for patterns, the various units of which can realize the various steps of the digital pressing method for patterns on cellulose acetate eyeglass adhesive sheets. Figure 2A structural block diagram of the pattern digital pressing device provided in the embodiments of this application is shown. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0067] Reference Figure 2 The device includes: The temperature confirmation unit is used to acquire the temperature of the pressing mold in real time and send a first standby signal when the temperature of the pressing mold reaches a first temperature. The first standby signal is used to reflect that the pressing mold is ready to press. In response to the first standby signal, the pressing mold will stop heating. The first temperature is greater than the optimal plasticity temperature of the sheet. The positioning confirmation unit is used to send a second standby signal when it detects that the sheet is fixed in the pressing area, and to cancel the second standby signal when it detects that the sheet is not fixed in the pressing area; wherein, the second standby signal is used to reflect that the sheet is ready for pressing; The pressing logic unit is used to perform a pressing process based on a fixed pressure-time relationship curve when the first standby signal and the second standby signal are prepared simultaneously. When the pressing process ends, the second temperature is recorded and the first standby signal is canceled. The second temperature refers to the temperature of the pressing mold at the end of the pressing process. The grinding thickness determination unit is used to compare the second temperature with the third temperature and determine the first thickness of the grinding and polishing process based on the difference between the third temperature and the second temperature. The third temperature is the temperature after the pressing process of the pressing mold under standard conditions, and the first thickness refers to the grinding thickness when the board is being ground and polished. In response to the first thickness, the pattern digital pressing equipment performs the corresponding grinding and polishing process.

[0068] It should be noted that the information interaction and execution process between the above-mentioned units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, which will not be repeated here.

[0069] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units is used as an example. In practical applications, the above functions can be assigned to different functional units as needed, that is, the internal structure of the device can be divided into different functional units to complete all or part of the functions described above. The functional units in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0070] This application also provides a digital pattern pressing device. Figure 3 This is a schematic diagram of the structure of a pattern digital pressing device provided in an embodiment of this application. Figure 3 As shown, the control device 4 of the pattern digitization pressing equipment in this embodiment includes: at least one processor 40 ( Figure 3 Only one is shown in the image), at least one memory 41 ( Figure 3 (Only one is shown in the image) and a computer program 42 stored in the at least one memory 41 and executable on the at least one processor 40. When the processor 40 executes the computer program 42, it causes the control device 4 of the pattern digitization pressing equipment to perform the steps in any of the above embodiments of the pattern digitization pressing method for cellulose acetate eyeglass adhesive sheets, or causes the control device 4 of the pattern digitization pressing equipment to perform the functions of each unit in the above embodiments of the apparatus.

[0071] For example, the computer program 42 may be divided into one or more units, which are stored in the memory 41 and executed by the processor 40 to complete this application. The one or more units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 42 in the control device 4 of the pattern digitization pressing equipment.

[0072] The control device 4 of the pattern digitization pressing equipment can be a microcontroller, microprocessor, mobile phone, tablet computer, wearable device, vehicle-mounted device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), desktop computer, smart screen, smart TV, or handheld device with wireless communication function. The control device 4 of the pattern digitization pressing equipment may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will understand that... Figure 3 This is merely an example of the control device 4 of the pattern digitization pressing equipment and does not constitute a limitation on the control device 4 of the pattern digitization pressing equipment. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, buses, etc.

[0073] The processor 40 can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0074] In some embodiments, the memory 41 may be an internal storage unit of the control device 4 of the pattern digitization pressing equipment, such as a hard disk or memory of the control device 4. In other embodiments, the memory 41 may be an external storage device of the control device 4, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the control device 4. Further, the memory 41 may include both internal and external storage units of the control device 4. The memory 41 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 41 can also be used to temporarily store data that has been output or will be output.

[0075] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0076] This application provides a computer program product that, when run on a pattern digitization pressing device, enables the pattern digitization pressing device to perform the steps in any of the above method embodiments.

[0077] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to the pattern digitization pressing device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, such as a USB flash drive, a portable hard drive, a magnetic disk, or an optical disk.

[0078] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0079] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0080] In the embodiments provided in this application, it should be understood that the disclosed method, apparatus, and equipment for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets can be implemented in other ways. For example, the embodiments of the method, apparatus, and equipment for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be indirect couplings or communication connections through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0081] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0082] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets, characterized in that, The method is applied to a pattern digital pressing equipment, which performs pressing and polishing processes on cellulose acetate eyeglass adhesive sheets. The temperature of the pressing mold is acquired in real time, and a first standby signal is sent when the temperature of the pressing mold reaches a first temperature; wherein, the first standby signal is used to reflect that the pressing mold is ready to press, and in response to the first standby signal, the pressing mold will stop heating, and the first temperature is greater than the optimal plasticity temperature of the sheet. A second standby signal is sent when the sheet material is detected to be fixed in the pressing area, and the second standby signal is canceled when the sheet material is detected to be not fixed in the pressing area; wherein, the second standby signal is used to reflect that the sheet material is ready for pressing; When the first standby signal and the second standby signal are prepared simultaneously, the pattern digital pressing device performs a pressing process based on a fixed pressure-time relationship curve. When the pressing process ends, the second temperature is recorded and the first standby signal is canceled. The second temperature refers to the temperature of the pressing mold at the end of the pressing process. The second temperature is compared with the third temperature, and the first thickness of the grinding and polishing process is determined based on the difference between the third temperature and the second temperature; wherein, the third temperature is the temperature after the pressing process of the pressing mold under standard conditions, and the first thickness refers to the grinding thickness when the plate is ground and polished. In response to the first thickness, the pattern digital pressing equipment performs the corresponding grinding and polishing process.

2. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, In determining the first thickness, the method further includes: When the ΔT of a plate is less than 0, a supplementary pressing command is sent; wherein, the ΔT = the third temperature - the second temperature, and the pattern digitization pressing device responds to the supplementary pressing command to perform an additional pressing process on the plate. The first thickness is obtained based on the ΔT from the two pressing processes.

3. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, In determining the first thickness, the method further includes: Obtain the ΔT values ​​less than 0 among all the plates, and calculate the margin temperature based on the minimum value among all ΔT values ​​less than 0; wherein, ΔT = the third temperature - the second temperature; The first temperature is corrected by adding the margin temperature to the first temperature; wherein, the correction of the first temperature will change the second temperature and the third temperature, but because the change is the same, it will not affect the ΔT, and therefore will not affect the value of the first thickness. The allowance thickness is determined based on the allowance temperature, and then the first thickness is corrected based on the allowance thickness.

4. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 3, characterized in that, Before obtaining the residual temperature, the method further includes: Calculate the outlier degree of all ΔT values, and then exclude ΔT values ​​that are greater than the threshold. The maximum values ​​of the margin thickness and the margin temperature are set according to the outlier degree of ΔT.

5. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, The method further includes: When the duration of the first standby signal exceeds the threshold duration, the first standby signal is automatically cancelled.

6. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, The pattern digital pressing equipment includes a sheet material transfer device for transferring the sheet material, and the method further includes: A third signal is sent when the pattern digitization pressing equipment is performing a pressing or polishing process, and the third signal is automatically canceled when the pattern digitization pressing equipment is not performing a pressing or polishing process; wherein, the third signal is used to reflect that the pattern digitization pressing equipment is processing, and the plate transfer device cannot operate in response to the third signal.

7. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, Before the sheet material is fixed in the pressing area, the sheet material is preheated to a temperature lower than the first temperature, the second temperature, or the third temperature after preheating.

8. The method for digitally pressing patterns onto cellulose acetate eyeglass adhesive sheets as described in claim 1, characterized in that, The pressing process is divided into a pressurization section, a holding section, and a depressurization section. In the pressurization section, the pressure is increased to the maximum pressure at a fixed pressure increase rate and a fixed increase time. In the holding section, the holding pressure is maintained for a fixed time. In the depressurization section, the pressing mold moves away from the sheet material at a uniform speed. The maximum pressure in the pressurization section is greater than the holding pressure in the holding section. In the depressurization section, the temperature of the pressing mold is collected at a fixed frequency, and the average of the collected temperatures is the second temperature.

9. A pattern digital pressing device, characterized in that, An apparatus for digitally pressing patterns, wherein the digitally pressing pattern pressing equipment performs pressing and polishing processes on cellulose acetate eyeglass adhesive sheets, the apparatus comprising: A temperature confirmation unit is used to acquire the temperature of the pressing mold in real time and send a first standby signal when the temperature of the pressing mold reaches a first temperature; wherein, the first standby signal is used to reflect that the pressing mold is ready to press, and in response to the first standby signal, the pressing mold will stop heating, and the first temperature is greater than the optimal plasticity temperature of the sheet. The positioning confirmation unit is used to send a second standby signal when it detects that the sheet material is fixed in the pressing area, and to cancel the second standby signal when it detects that the sheet material is not fixed in the pressing area; wherein, the second standby signal is used to reflect that the sheet material is ready for pressing; The pressing logic unit is used to perform a pressing process based on a fixed pressure-time relationship curve by the pattern digitization pressing device when the first standby signal and the second standby signal are prepared simultaneously, record a second temperature when the pressing process ends, and cancel the first standby signal; wherein, the second temperature refers to the temperature of the pressing mold at the end of the pressing process; The grinding thickness determination unit is used to compare the second temperature with the third temperature and determine the first thickness of the grinding and polishing process based on the difference between the third temperature and the second temperature; wherein, the third temperature is the temperature after the pressing process of the pressing mold under standard conditions, and the first thickness refers to the grinding thickness when the plate is ground and polished. In response to the first thickness, the pattern digital pressing equipment performs the corresponding grinding and polishing process.

10. A pattern digital pressing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 8.

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