PUR glue mixing process method for edge sealing process

Abstract

The invention discloses a PUR glue mixing process method for an edge sealing process, and the method comprises the steps of edge sealing glue preparation, intelligent PUR glue supply machine system setting, high-precision color recognition sensing calibration, system setting confirmation, multi-system coordination action construction, glue mixing proportion regulation and control implementation, and glue coating and edge sealing detection. The PUR glue mixing process method for the edge sealing process comprises the steps of glue mixing glue preparation, intelligent PUR glue supply machine system setting, high-precision color recognition sensing calibration, system setting confirmation, multi-system coordination action construction, glue mixing proportion regulation and control implementation, and glue coating and edge sealing detection. The integrated edge sealing machine gluing unit, the color recognition module and the intelligent PUR glue supply machine system jointly complete the PUR mixed glue processing effect, the problem that a traditional single-color glue supply machine only supports single glue output is solved, especially the problem that the color difference control range of edge sealing plate glue lines and plates is met is solved, the gray and khaki color system processing requirements are met, and the production efficiency is improved. The problem of edge sealing color difference control of plates with different colors is solved, the color and glue mixing technology is creatively utilized, and the selectivity of the edge sealing technology is greatly enriched.

Description

Technical Field

[0001] The invention relates to the technical field of edge banding machines, and in particular to a PUR glue mixing process method for edge banding. Background Art

[0002] In the custom board edge banding process, PUR glue has long been used for edge banding with a single color, and the products presented are all single-color glue edge banding. When the board is gray or khaki, the single-color glue line will form a significant color difference, which to a certain extent limits the processing of other colors of the product, making the product single and lacking in competitiveness. With the increasing demand for personalized customization in the market, some gray, khaki and some gradient mixed color series boards can no longer meet the actual processing needs with the traditional single-color glue edge banding process. The single-color glue process will cause obvious color difference in the glue line of gray and khaki boards, affecting the appearance of the product. Summary of the invention

[0003] The object of the present invention is to provide a PUR mixing process for edge banding to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a PUR mixing process method for edge banding, the method comprising the following steps:

[0005] S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine;

[0006] S2, intelligent PUR glue supply machine system setting, intelligently adjust the opening, glue temperature and pump speed of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system setting includes:

[0007] Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece;

[0008] Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states;

[0009] Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode;

[0010] S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value.

[0011] S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed;

[0012] S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control;

[0013] S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard;

[0014] S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

[0015] Preferably, in the process of mixing the glue in step S1, a proper amount of catalyst and stabilizer is added to improve the curing speed and stability of the PUR adhesive.

[0016] Preferably, in the valve opening setting of step S2, closed-loop feedback control is adopted to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 0.5%-1.5%.

[0017] Preferably, after the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed board or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected and configured to achieve consistency between the glue output color and the board surface color.

[0018] Preferably, in step S6, the gluing unit stirs and mixes the glue at a frequency of every 2 seconds, and automatically stops after 1 minute to determine that the uniformity of the glue meets the standard.

[0019] Preferably, the edge sealing in step S7 is heated by hot air blowing from a dryer for 10-15 minutes, and cooled by air cooling with a heat dissipation fan for 15-20 minutes.

[0020] Preferably, in the preparation of the edge-sealing glue in step S1, the raw materials are heat-treated according to the mixing process, and the heating temperature is 40-50°C.

[0021] Preferably, when the pure white edge band is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated.

[0022] Preferably, the closed-loop control logic in step S5 is that the color sensor scans the color of the edge band in real time, extracts color feature data, and extracts relevant color data information through analysis by the sensor central system.

[0023] Preferably, the closed-loop control logic in step S5 dynamically adjusts the glue output ratio of the glue supply machine according to the edge band color data fed back by the sensor through a programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and the glue coating speed to ensure uniform glue mixing.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention integrates the edge banding machine gluing unit, color recognition module, and intelligent PUR glue supply system to jointly complete the PUR glue mixing processing effect, solving the problem that traditional single-color glue supply machines only support single glue output, especially solving the control range of glue line and color difference of edge banding board materials, meeting the processing requirements of gray and khaki color systems, and overcoming the problem of color difference control of edge banding of different-color boards. It creatively utilizes mixed color and mixed glue technology, and greatly enriches the selectivity of edge banding technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a process flow chart of the present invention;

[0027] Figure 2 The present invention is a process diagram for implementing the mixing ratio control. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-2 ,

[0030] Example 1

[0031] The present invention provides a PUR mixing process method for edge sealing, the method comprising the following steps:

[0032] S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine;

[0033] S2, intelligent PUR glue supply machine system settings, intelligently adjust the opening, glue temperature and pump speed of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system settings include:

[0034] Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece;

[0035] Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states;

[0036] Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode;

[0037] S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value.

[0038] S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed;

[0039] S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control;

[0040] S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard;

[0041] S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

[0042] In the process of mixing glue in step S1, an appropriate amount of catalyst and stabilizer are added to improve the curing speed and stability of the PUR adhesive. In the preparation of the edge sealing glue in step S1, the raw materials are heat treated according to the mixing process, and the heating temperature is 45°C. In the setting of the valve opening in step S2, closed-loop feedback control is used to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 1%.

[0043] After the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed panel or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected to achieve the consistency of the output glue color and the board surface color. When the pure white edge banding is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated. The closed-loop control logic in step S5 is that the color sensor scans the edge banding color in real time, extracts the color feature data, and extracts the relevant color data information through the sensor central system analysis. The closed-loop control logic in step S5 dynamically adjusts the glue output ratio of the glue supply machine according to the edge banding color data fed back by the sensor through the programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and the glue coating speed to ensure uniform glue mixing.

[0044] In step S6, the gluing unit stirs and mixes the glue at a frequency of every 2 seconds, and stops automatically after 1 minute to determine that the uniformity of the glue meets the standard. In step S7, the edge sealing is heated by hot air blowing through a dryer, and the heating time is 12 minutes. The cooling adopts air cooling treatment with a heat dissipation fan, and the cooling time is 20 minutes.

[0045] Example 2

[0046] The present invention provides a PUR mixing process method for edge sealing, the method comprising the following steps:

[0047] S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine;

[0048] S2, intelligent PUR glue supply machine system settings, intelligently adjust the opening, glue temperature and pump speed of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system settings include:

[0049] Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece;

[0050] Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states;

[0051] Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode;

[0052] S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value.

[0053] S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed;

[0054] S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control;

[0055] S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard;

[0056] S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

[0057] In the process of mixing glue in step S1, an appropriate amount of catalyst and stabilizer are added to improve the curing speed and stability of the PUR adhesive. In the preparation of the edge sealing glue in step S1, the raw materials are heat treated according to the mixing process, and the heating temperature is 48°C. In the setting of the valve opening in step S2, closed-loop feedback control is used to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 1.5%.

[0058] After the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed panel or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected to achieve the consistency of the output glue color and the board surface color. When the pure white edge banding is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated. The closed-loop control logic in step S5 is that the color sensor scans the edge banding color in real time, extracts the color feature data, and extracts the relevant color data information through the sensor central system analysis. The closed-loop control logic in step S5 dynamically adjusts the glue output ratio of the glue supply machine according to the edge banding color data fed back by the sensor through the programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and the glue coating speed to ensure uniform glue mixing.

[0059] In step S6, the gluing unit stirs and mixes the glue at a frequency of every 2 seconds, and stops automatically after 1 minute to determine that the uniformity of the glue meets the standard. In step S7, the edge sealing is heated by hot air blowing through a dryer, and the heating time is 15 minutes. The cooling adopts air cooling treatment with a heat dissipation fan, and the cooling time is 20 minutes.

[0060] Example 3

[0061] The present invention provides a PUR mixing process method for edge sealing, the method comprising the following steps:

[0062] S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine;

[0063] S2, intelligent PUR glue supply machine system settings, intelligently adjust the opening, glue temperature and pump speed of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system settings include:

[0064] Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece;

[0065] Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states;

[0066] Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode;

[0067] S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value.

[0068] S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed;

[0069] S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control;

[0070] S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard;

[0071] S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

[0072] In the process of mixing glue in step S1, an appropriate amount of catalyst and stabilizer are added to improve the curing speed and stability of the PUR adhesive. In the preparation of the edge sealing glue in step S1, the raw materials are heat treated according to the mixing process, and the heating temperature is 40°C. In the setting of the valve opening in step S2, closed-loop feedback control is used to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 0.5%.

[0073] After the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed panel or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected to achieve the consistency of the output glue color and the board surface color. When the pure white edge banding is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated. The closed-loop control logic in step S5 is that the color sensor scans the edge banding color in real time, extracts the color feature data, and extracts the relevant color data information through the sensor central system analysis. The closed-loop control logic in step S5 dynamically adjusts the glue output ratio of the glue supply machine according to the edge banding color data fed back by the sensor through the programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and the glue coating speed to ensure uniform glue mixing.

[0074] In step S6, the gluing unit stirs and mixes the glue at a frequency of every 2 seconds, and stops automatically after 1 minute to determine that the uniformity of the glue meets the standard. In step S7, the edge sealing is heated by hot air blowing through a dryer, and the heating time is 10 minutes. The cooling adopts air cooling treatment with a heat dissipation fan, and the cooling time is 15 minutes.

[0075] Example 4

[0076] The present invention provides a PUR mixing process method for edge sealing, the method comprising the following steps:

[0077] S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine;

[0078] S2, intelligent PUR glue supply machine system settings, intelligent adjustment of the opening, glue temperature setting and pump speed adjustment of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system settings include:

[0079] Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece;

[0080] Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states;

[0081] Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode;

[0082] S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value.

[0083] S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed;

[0084] S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control;

[0085] S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard;

[0086] S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

[0087] In the process of mixing glue in step S1, an appropriate amount of catalyst and stabilizer are added to improve the curing speed and stability of the PUR adhesive. In the preparation of the edge sealing glue in step S1, the raw materials are heat treated according to the mixing process, and the heating temperature is 45°C. In the setting of the valve opening in step S2, closed-loop feedback control is used to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 0.8%.

[0088] After the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed panel or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected to achieve the consistency of the output glue color and the board surface color. When the pure white edge banding is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated. The closed-loop control logic in step S5 is that the color sensor scans the edge banding color in real time, extracts the color feature data, and extracts the relevant color data information through the sensor central system analysis. The closed-loop control logic in step S5 dynamically adjusts the glue output ratio of the glue supply machine according to the edge banding color data fed back by the sensor through the programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and the glue coating speed to ensure uniform glue mixing.

[0089] In step S6, the gluing unit stirs and mixes the glue at a frequency of every 2 seconds, and stops automatically after 1 minute to determine that the uniformity of the glue meets the standard. In step S7, the edge sealing is heated by hot air blowing through a dryer, and the heating time is 12 minutes. The cooling adopts a heat dissipation fan air cooling treatment, and the cooling time is 17 minutes.

[0090] When used specifically, the present invention provides a PUR glue mixing process method for edge banding technology. The present invention specifically performs the following key upgrades on a traditional linear edge banding machine. An intelligent PUR glue supply machine cooperates with a glue supply machine system to support mixed output of two glues. The mixing ratio of glues of different colors is controlled by adjusting the opening of the glue outlet valve and the frequency of the pressure pump. A high-precision color recognition sensor is used to scan the color characteristics of the edge band surface in real time, and the color data is converted into hue, brightness, and saturation parameters to generate a corresponding glue mixing formula. A closed-loop control logic is performed during glue mixing. The programmable controller dynamically adjusts the glue output ratio of the glue supply machine according to the edge band color data fed back by the sensor. The glue coating unit simultaneously optimizes the glue line thickness and the glue coating speed to ensure that the glue mixing is uniform, thereby achieving the PUR glue mixing processing technology requirements.

[0091] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PUR mixing process for edge banding, characterized in that: The method comprises the following steps: S1. Preparation of edge banding glue: First prepare the PUR adhesive, select the polyurethane raw material that meets the environmental protection requirements, mix the raw materials in proportion through precise measurement, and add the mixed PUR raw material glue into the corresponding PUR glue supply machine; S2, intelligent PUR glue supply machine system setting, intelligently adjust the opening, glue temperature and pump speed of two single-color PUR glue supply machines, and the intelligent PUR glue supply machine system setting includes: Step 1: Valve opening setting, intelligently adjust the opening of the glue valves of the two single-color PUR glue supply machines to ensure that the valve opening of the two glue supply machine units is synchronized in the mixed glue mode, and adjust the glue volume ratio by using the speed difference of the glue pump to form a color similar to the surface of the workpiece; Step 2: Glue temperature setting: adjust the glue temperature of two single-color PUR glue supply machines, adjust the temperature of the hose and the pressure plate according to the glue type and ambient temperature, and ensure the hot melt state of the glue is stable in the PUR mixing mode according to the effective flow rate of the glue in different states; Step 3: Glue supply frequency setting, set the frequency of the two single-color PUR glue supply machine systems: set a basic frequency value for the speed of the glue supply machine pressure pump to ensure that the motor speed is too low or too high to affect the glue output, so as to ensure that the output glue flow rate benchmark is locked in the intelligent glue mixing mode; S3. High-precision color recognition sensor calibration: First, calibrate the pure white edge band and generate a digital signal, and expand the white calibration to full color gamut management, supporting khaki color, gradient mixing and other color systems, and set the calibration return value as the reference value. S4, system setting confirmation: through steps S2 and S3, the glue supply machine pressure is synchronously regulated, the glue hot melt is stable, the flow rate benchmark is locked, the color recognition benchmark is established, and the information is confirmed; S5. Construction of multi-system collaborative action: Through the above steps, a "glue supply-identification-glue coating" three-in-one system is constructed. Through closed-loop control logic, relevant color data information is extracted and sent to the programmable controller for secondary logic processing. After logic analysis, it is uploaded to the pre-stored formula database of the upper computer central control system for matching. The matching results are sent to the execution unit to perform dynamic glue mixing ratio control; S6. Implement glue mixing ratio control: When the central control host computer issues the formula, it automatically detects whether the glue temperature of the glue supply machine meets the standard. If it meets the standard, the frequency of the pressure pump of the dual glue supply machine is adjusted according to the formula, that is, the flow rate is controlled, and the valve opening time, that is, the glue output amount is controlled. At the same time, the glue coating unit stirs and mixes the glue to ensure that the glue uniformity meets the standard; S7. Glue coating and edge banding inspection: The color is completed by mixing glue. The PUR adhesive is evenly applied to the edge of the edge banding tape or the board. The edge banding tape is attached to the board and pressed to make it firmly bonded. After a certain period of heating and cooling, the PUR adhesive undergoes a chemical reaction under the action of moisture in the air to form a strong chemical bond, completing the edge banding process. The product after edge banding is tested for color difference to determine the final glue and color mixing situation, and the glue mixing ratio that meets the color requirements is recorded.

2. A PUR rubber mixing process for edge banding according to claim 1, characterized in that: In the process of mixing the glue in step S1, a proper amount of catalyst and stabilizer are added to improve the curing speed and stability of the PUR adhesive.

3. The PUR mixing process for edge banding according to claim 1, characterized in that: In the valve opening setting of step S2, closed-loop feedback control is adopted to ensure that the two-way glue output is evenly mixed and the color is mixed, and the deviation is 0.5%-1.5%.

4. The PUR mixing process for edge banding according to claim 1, characterized in that: After the calibration return value in step S3 is set as the reference value, the color of the board surface of the processed board or the color of the pre-processed edge banding strip is inspected and the mixing ratio of two different glues is collected and configured to achieve the consistency of the glue color and the board surface color.

5. The PUR mixing process for edge banding according to claim 1, characterized in that: In step S6, the glue coating unit stirs and mixes the glue at a frequency of every 2 seconds, and automatically stops after 1 minute to determine that the uniformity of the glue meets the standard.

6. The PUR mixing process for edge banding according to claim 1, characterized in that: In step S7, the edge sealing is heated by hot air blowing from a dryer for 10-15 minutes, and cooled by air cooling with a heat dissipation fan for 15-20 minutes.

7. The PUR mixing process for edge banding according to claim 1, characterized in that: In the preparation of the edge-sealing glue in step S1, the raw materials are heat-treated during the mixing process, and the heating temperature is 40-50°C.

8. The PUR mixing process for edge banding according to claim 1, characterized in that: When the pure white edge band is color calibrated in step S3, a 16-bit digital signal containing hue, brightness and saturation is generated.

9. The PUR mixing process for edge banding according to claim 1, characterized in that: In the step S5, the closed-loop control logic is that the color sensor scans the edge band color in real time, extracts color feature data, and extracts relevant color data information through analysis by the sensor central system.

10. The PUR mixing process for edge banding according to claim 1, characterized in that: In step S5, the closed-loop control logic dynamically adjusts the glue output ratio of the glue supply machine according to the edge banding color data fed back by the sensor through the programmable controller, and the glue coating unit synchronously optimizes the glue line thickness and glue coating speed to ensure uniform glue mixing.

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