A manufacturing process for hot-pressed real wood automobile trim

Abstract

One or more embodiments of the present specification provide a manufacturing process for hot-pressed real wood automotive accessories, including step one: log processing; step two: surface treatment; step three: drainage treatment: using an extruder for extrusion, first maintaining a pressure of 2 MPa for 20 minutes during the extrusion process, slowly evacuating the extrusion environment during this process, increasing the pressure to 6-7 MPa after 20 minutes, turning off the vacuum when the pressure increases to reach the target pressure and maintaining the vacuum environment, and maintaining it at a pressure of 6-7 MPa for 2 hours, and maintaining the internal temperature at 150-180°C during the drainage process; step four: drying treatment; step five: moisture content detection; step six: polishing treatment; step seven: shaping treatment; step eight: leveling treatment; through the control of pressure, temperature control and processing in a vacuum environment, the effect of the drainage process in the early stage is greatly increased, which helps to exert better flexibility of the board, thereby reducing cracks in the board and the stacking marks of the circular shape.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the technical field of hot-pressed real wood manufacturing, and in particular, to a manufacturing process of hot-pressed real wood automobile accessories. Background Art

[0002] Hot pressing is a process of heating and pressing the slab after laying and forming to make a fiber board with certain mechanical strength and water resistance. Whether it is wet-process production of hardboard or semi-hardboard, or dry-process production of hardboard or medium-density fiberboard, it must be hot pressed to become a board.

[0003] The prior art has an application number of 2013102903906, and the patent name is a Chinese invention patent for a manufacturing process of hot-pressed real wood automobile accessories. It is described that "a veneer structure is added to the substrate of the automobile accessories, so that the automobile accessories have wooden or imitation wooden interior decoration. At the same time, the whole process ensures that the automobile accessories and the veneer are free of wrinkles, delamination, damage, cracking and other defects after hot pressing, and a perfect effect is achieved in terms of comfort and appearance." However, this method still uses paint and wood veneer to achieve the covering effect in actual use, which still produces cracks and circular stacking marks on the board, thereby failing to meet the requirements of the prior art. Summary of the invention

[0004] In view of this, the purpose of one or more embodiments of this specification is to propose a manufacturing process for hot-pressed real wood automotive accessories to solve the problem that cracks are easily formed on the surface during processing in the prior art and that circular stacking marks appear on the surface of the real wood board after processing.

[0005] Based on the above purpose, one or more embodiments of this specification provide a manufacturing process for hot-pressed real wood automobile trim, including the following steps:

[0006] Step 1: Log processing: place the log in a dry, ventilated and light-free place for 20 days, and then cut it to the appropriate thickness;

[0007] Step 2: Surface treatment: buckle the logs from step 1 and apply an appropriate amount of drying powder on the surface, store them in a dry environment for 2 days, and then clean the drying powder on the surface;

[0008] Step 3: Drainage treatment: Use an extruder to extrude, and maintain a pressure of 2MPa for 20 minutes during the extrusion process. During this process, the extrusion environment is slowly vacuumed. After 20 minutes, the pressure is increased to 6-7MPa. When the pressure reaches the target pressure, the vacuum is turned off and the vacuum environment is maintained, and the pressure is maintained at 6-7MPa for 2 hours. During the drainage process, the internal temperature is maintained at 150-180℃;

[0009] Step 4: Drying treatment: the product treated in step 3 is heated and evaporated by heating. During the heating and evaporation process, the pressure increases to 5MPa, and the vacuum environment is released during the evaporation stage to maintain the pressure for 1h;

[0010] Step 5: Moisture content detection: the product processed in step 4 is subjected to corner cutting detection, and the corner cutting is detected by a plate detector to obtain the moisture content of the plate. If the moisture content is higher than 5%, heating is continued, and when the moisture content is lower than 5%, heating is turned off;

[0011] Step 6: Grinding: Take out the product processed in step 5 and grind the edges;

[0012] Step 7: Shaping treatment, slowly shaping the product processed in step 6 under high temperature environment;

[0013] Step 8: Leveling treatment: the product processed in step 7 is puttyed and dried to level it.

[0014] Among them, the method of processing the dry powder in step 2 is carried out in the form of blowing.

[0015] Among them, the final vacuum degree during vacuuming in step three reaches 10^-3Pa.

[0016] Wherein, the temperature during the heating process of step 4 is controlled at 180°C.

[0017] Among them, when cutting corners in step five, the edges or seams are selected for cutting corner sampling.

[0018] Among them, the grinding process in step six uses equipment for compaction grinding, and the pressure during grinding and compaction is 1.3MPa.

[0019] In the shaping stage of step seven, heating is performed, and the heating temperature is 140°C.

[0020] Among them, in step eight, the surface is ground and polished after leveling.

[0021] Wherein, the dry powder in step 2 is a mixture of lime powder and gypsum powder.

[0022] The ratio of the lime powder to the gypsum powder is 28%:72%.

[0023] From the above description, it can be seen that one or more embodiments of the present specification provide a manufacturing process for hot-pressed real wood automotive accessories. Through pressure control, temperature control and processing in a vacuum environment, the effect of the early drainage process is greatly increased, and the internal air content is also greatly reduced under the vacuum environment. The tightness of the internal board is greatly increased under the action of maintaining pressure, and at the same time, the different controls of the temperature and pressure of the board are increased, which helps to exert better flexibility of the board. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. Example

[0026] A manufacturing process for hot-pressed real wood automobile trims comprises the following steps:

[0027] Step 1: Log processing: place the log in a dry, ventilated and light-free place for 20 days, and then cut it to the appropriate thickness;

[0028] Step 2: Surface treatment: buckle the logs from step 1 and apply a proper amount of drying powder on the surface, store them in a dry environment for 2 days, and then clean the drying powder on the surface. The drying powder is treated by blowing air;

[0029] Among them, the dry powder is a mixture of lime powder and gypsum powder, and the ratio of lime powder to gypsum powder is 28%:72%.

[0030] Among them, lime powder is used to kill parasites in the board during use.

[0031] Step 3: Drainage treatment: Use an extruder for extrusion. During the extrusion process, first maintain a pressure of 2MPa for 20 minutes. During this process, the extrusion environment is slowly evacuated. After 20 minutes, the pressure is increased to 6MPa. When the pressure increases to reach the target pressure, turn off the vacuum and maintain the vacuum environment. Maintain it at 6MPa for 2 hours. During the drainage process, the internal temperature is maintained at 150℃; the final vacuum degree reaches 10^-3Pa during vacuuming.

[0032] Among them, the processing plan of step three is used for the pressure and temperature required for processing boards with low moisture content and poor softness, such as walnut.

[0033] Step 4: Drying treatment: the product treated in step 3 is heated and evaporated by heating. During the heating and evaporation process, the pressure increases to 5MPa, and the vacuum environment is released during the evaporation stage to maintain the pressure for 1 hour; the temperature during the heating process is controlled at 180°C.

[0034] Among them, high temperature evaporation helps to further evaporate the water that has not been squeezed out before the board is discharged.

[0035] Step 5: Moisture content detection. Perform corner cutting detection on the product processed in step 4. Use a plate detector to detect the corner cutting and obtain the moisture content of the plate. If the moisture content is higher than 5%, continue heating. When the moisture content is lower than 5%, turn off the heating. When cutting corners, select the edge or joint to take corner cutting samples.

[0036] Among them, the plate detector is a plate moisture content detector, and the accuracy of the plate moisture content detector selected is 0.5.

[0037] Step six: grinding, take out the product processed in step five, and then grind the edge; the grinding process uses equipment for compaction grinding, and the pressure during grinding and compaction is 1.3MPa.

[0038] Among them, the edge grinding treatment prevents the edge extrusion of the plate from affecting the subsequent plasticity and causing edge faults, and pressurization is applied during grinding to prevent internal faults during grinding.

[0039] Step seven: shaping treatment, slowly shaping the product processed in step six in a high temperature environment; heating is performed during the shaping stage, and the heating temperature is 140°C.

[0040] The shaping stage maintains heating but the processing environment is carried out in an oxygen-free and water-free environment, and the air humidity is less than 15%.

[0041] Among them, the maximum bending angle of the shaping is 50°, and the minimum arc length of the shaping is 15cm.

[0042] Step 8: Leveling treatment: the product processed in step 7 is puttyed and dried to level it; after leveling, the surface is ground and polished.

[0043] Among them, grinding and polishing are convenient for subsequent surface pasting of wood veneer and jet operation. In addition, in the subsequent processing, the durability of the product is considered, and the vacuum equipment is used to vacuum the product after leveling treatment to increase the strength of the putty. The product needs to be sampled and tested before subsequent processing. Example

[0044] A manufacturing process for hot-pressed real wood automobile trims comprises the following steps:

[0045] Step 1: Log processing: place the log in a dry, ventilated and light-free place for 20 days, and then cut it to the appropriate thickness;

[0046] Step 2: Surface treatment: buckle the logs from step 1 and apply a proper amount of drying powder on the surface, store them in a dry environment for 2 days, and then clean the drying powder on the surface. The drying powder is treated by blowing air;

[0047] Among them, the dry powder is a mixture of lime powder and gypsum powder, and the ratio of lime powder to gypsum powder is 28%:72%.

[0048] Among them, lime powder is used to kill parasites in the board during use.

[0049] Step 3: Drainage treatment: Use an extruder for extrusion. During the extrusion process, first maintain a pressure of 2MPa for 20 minutes. During this process, the extrusion environment is slowly evacuated. After 20 minutes, the pressure is increased to 6.5MPa. When the pressure increases to reach the target pressure, turn off the vacuum and maintain the vacuum environment. Maintain it at a pressure of 6.5MPa for 2 hours. During the drainage process, the internal temperature is maintained at 165°C; the final vacuum degree reaches 10^-3Pa during vacuuming.

[0050] Among them, the processing plan of step three is used for the pressure and temperature required for processing boards with low moisture content and moderate softness such as oak.

[0051] Step 4: Drying treatment: the product treated in step 3 is heated and evaporated by heating. During the heating and evaporation process, the pressure increases to 5MPa, and the vacuum environment is released during the evaporation stage to maintain the pressure for 1 hour; the temperature during the heating process is controlled at 180°C.

[0052] Among them, high temperature evaporation helps to further evaporate the water that has not been squeezed out before the board is discharged.

[0053] Step 5: Moisture content detection. Perform corner cutting detection on the product processed in step 4. Use a plate detector to detect the corner cutting and obtain the moisture content of the plate. If the moisture content is higher than 5%, continue heating. When the moisture content is lower than 5%, turn off the heating. When cutting corners, select the edge or joint to take corner cutting samples.

[0054] Among them, the plate detector is a plate moisture content detector, and the accuracy of the plate moisture content detector selected is 0.5.

[0055] Step six: grinding, take out the product processed in step five, and then grind the edge; the grinding process uses equipment for compaction grinding, and the pressure during grinding and compaction is 1.3MPa.

[0056] Among them, the edge grinding treatment prevents the edge extrusion of the plate from affecting the subsequent plasticity and causing edge faults, and pressurization is applied during grinding to prevent internal faults during grinding.

[0057] Step seven: shaping treatment, slowly shaping the product processed in step six in a high temperature environment; heating is performed during the shaping stage, and the heating temperature is 140°C.

[0058] The shaping stage maintains heating but the processing environment is carried out in an oxygen-free and water-free environment, and the air humidity is less than 15%.

[0059] Among them, the maximum bending angle of the shaping is 72°, and the minimum arc length of the shaping is 15cm.

[0060] Step 8: Leveling treatment: the product processed in step 7 is puttyed and dried to level it; after leveling, the surface is ground and polished.

[0061] Among them, grinding and polishing are convenient for subsequent surface pasting of wood veneer and jet operation. In addition, in the subsequent processing, the durability of the product is considered, and the vacuum equipment is used to vacuum the product after leveling treatment to increase the strength of the putty. The product needs to be sampled and tested before subsequent processing. Example

[0062] A manufacturing process for hot-pressed real wood automobile trims comprises the following steps:

[0063] Step 1: Log processing: place the log in a dry, ventilated and light-free place for 20 days, and then cut it to the appropriate thickness;

[0064] Step 2: Surface treatment: buckle the logs from step 1 and apply a proper amount of drying powder on the surface, store them in a dry environment for 2 days, and then clean the drying powder on the surface. The drying powder is treated by blowing air;

[0065] Among them, the dry powder is a mixture of lime powder and gypsum powder, and the ratio of lime powder to gypsum powder is 28%:72%.

[0066] Among them, lime powder is used to kill parasites in the board during use.

[0067] Step 3: Drainage treatment: Use an extruder for extrusion. During the extrusion process, first maintain a pressure of 2MPa for 20 minutes. During this process, the extrusion environment is slowly evacuated. After 20 minutes, the pressure is increased to 7MPa. When the pressure increases to reach the target pressure, turn off the vacuum and maintain the vacuum environment. Maintain it at 7MPa for 2 hours. During the drainage process, the internal temperature is maintained at 180℃; the final vacuum degree reaches 10^-3Pa during vacuuming.

[0068] Among them, the processing plan of step three is used for the pressure and temperature required for processing boards with high moisture content and moderate softness such as maple.

[0069] Step 4: Drying treatment: the product treated in step 3 is heated and evaporated by heating. During the heating and evaporation process, the pressure increases to 5MPa, and the vacuum environment is released during the evaporation stage to maintain the pressure for 1 hour; the temperature during the heating process is controlled at 180°C.

[0070] Among them, high temperature evaporation helps to further evaporate the water that has not been squeezed out before the board is discharged.

[0071] Step 5: Moisture content detection. Perform corner cutting detection on the product processed in step 4. Use a plate detector to detect the corner cutting and obtain the moisture content of the plate. If the moisture content is higher than 5%, continue heating. When the moisture content is lower than 5%, turn off the heating. When cutting corners, select the edge or joint to take corner cutting samples.

[0072] Among them, the plate detector is a plate moisture content detector, and the accuracy of the plate moisture content detector selected is 0.5.

[0073] Step six: grinding, take out the product processed in step five, and then grind the edge; the grinding process uses equipment for compaction grinding, and the pressure during grinding and compaction is 1.3MPa.

[0074] Among them, the edge grinding treatment prevents the edge extrusion of the plate from affecting the subsequent plasticity and causing edge faults, and pressurization is applied during grinding to prevent internal faults during grinding.

[0075] Step seven: shaping treatment, slowly shaping the product processed in step six in a high temperature environment; heating is performed during the shaping stage, and the heating temperature is 140°C.

[0076] The shaping stage maintains heating but the processing environment is carried out in an oxygen-free and water-free environment, and the air humidity is less than 15%.

[0077] Among them, the maximum bending angle of the shaping is 72°, and the minimum arc length of the shaping is 15cm.

[0078] Step 8: Leveling treatment: the product processed in step 7 is puttyed and dried to level it; after leveling, the surface is ground and polished.

[0079] Among them, grinding and polishing are convenient for subsequent surface pasting of wood veneer and jet operation. In addition, in the subsequent processing, the durability of the product is considered, and the vacuum equipment is used to vacuum the product after leveling treatment to increase the strength of the putty. The product needs to be sampled and tested before subsequent processing.

[0080] The above describes specific embodiments of the present specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve the desired results.

[0081] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0082] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0083] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A manufacturing process for hot-pressed real wood automobile accessories, characterized in that: The following steps are involved: Step 1: Log processing: place the log in a dry, ventilated and light-free place for 20 days, and then cut it to the appropriate thickness; Step 2: Surface treatment: buckle the logs from step 1 and apply an appropriate amount of drying powder on the surface, store them in a dry environment for 2 days, and then clean the drying powder on the surface; Step 3: Drainage treatment: Use an extruder to extrude, and maintain a pressure of 2MPa for 20 minutes during the extrusion process. During this process, the extrusion environment is slowly vacuumed. After 20 minutes, the pressure is increased to 6-7MPa. When the pressure reaches the target pressure, the vacuum is turned off and the vacuum environment is maintained, and the pressure is maintained at 6-7MPa for 2 hours. During the drainage process, the internal temperature is maintained at 150-180℃; Step 4: Drying treatment: the product treated in step 3 is heated and evaporated by heating. During the heating and evaporation process, the pressure increases to 5MPa, and the vacuum environment is released during the evaporation stage to maintain the pressure for 1h; Step 5: Moisture content detection: the product processed in step 4 is subjected to corner cutting detection, and the corner cutting is detected by a plate detector to obtain the moisture content of the plate. If the moisture content is higher than 5%, heating is continued, and when the moisture content is lower than 5%, heating is turned off; Step 6: Grinding: Take out the product processed in step 5 and grind the edges; Step 7: Shaping treatment, slowly shaping the product processed in step 6 under high temperature environment; Step 8: Leveling treatment: the product processed in step 7 is puttyed and dried to level it.

2. A manufacturing process for hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, The method of processing the dry powder in step 2 is carried out in the form of blowing.

3. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, During the vacuuming in step three, the final vacuum degree reaches 10^-3Pa.

4. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, The temperature during the heating process of step 4 is controlled at 180°C.

5. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, When cutting corners in step five, select the edge or joint to take samples.

6. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, The grinding process in step six uses equipment for compaction grinding, and the pressure during grinding and compaction is 1.3MPa.

7. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, The shaping stage of step seven is heated, and the heating temperature is 140°C.

8. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, Step 8: After leveling, the surface is ground and polished.

9. The manufacturing process of hot-pressed real wood automobile accessories according to claim 1, characterized in that: in, The dry powder in step 2 is prepared by mixing lime powder and gypsum powder.

10. A manufacturing process for hot-pressed real wood automobile accessories according to claim 9, characterized in that: The ratio of the lime powder to the gypsum powder is 28%:72%.