Manufacturing process and equipment for transparent carved furniture

Abstract

The invention discloses a manufacturing process and equipment for transparent carving furniture, and aims to improve the carving precision, the wood stability and the production efficiency. In the process aspect, the microwave and ultrasonic combined drying technology is adopted, the moisture content of the wood is uniform, the deformation and cracking risks are reduced, a nanoscale organic silicon coating is formed on the surface of the wood through plasma surface activating treatment, and the coating adhesive force and the carving quality are improved. In the aspect of equipment, supporting assemblies with synchronous movement are provided, stable supporting is provided for wood in the carving process, and deformation or breakage caused by uneven stress is prevented. In addition, the equipment is integrated with a negative pressure dust collection system, dust generated by engraving is collected in real time, the working environment is optimized, and the engraving precision is guaranteed. The full manufacturing process of the transparent-carved furniture is optimized, efficient and high-precision machining is achieved, and the overall quality and market competitiveness of the transparent-carved furniture are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture manufacturing, and particularly relates to a manufacturing process and equipment for openwork furniture. Background Art

[0002] Openwork carving is a carving technique in which "hollowing out" is used on the surface of a wooden board or furniture, that is, part of the area is carved into a hollow state to form a unique pattern or pattern. This technique is also called "hollow carving", and its effect is that light can pass through the carved gaps, creating an ethereal and transparent visual experience. Openwork furniture is traditional furniture with openwork carving as the main decorative technique.

[0003] Existing openwork furniture usually has two types: manual carving and mechanical carving. At present, in order to improve production efficiency and achieve mass production, most factories adopt mechanical carving. Mechanical carving can ensure the uniformity of product quality, and at the same time, compared with manual carving, its production efficiency can also be greatly improved. For mechanical carving, currently, a numerical control carving machine is mainly used as the main tool to complete the pattern carving of wood. Its manufacturing process is successively design, material selection and drying, carving with a numerical control carving machine, post-treatment, and quality inspection and packaging.

[0004] In the current drying process, natural air drying or hot air drying is usually adopted. These two methods are difficult to ensure the uniformity of the moisture content of wood. Although natural air drying can, to a certain extent, avoid the accumulation of internal stress in wood, it takes too long and is easily affected by environmental humidity, resulting in a large difference in the drying degree of wood in different batches. The hot air drying method is prone to excessive drying of the wood surface, and the internal moisture fails to evaporate sufficiently, thus forming a large internal stress. During the subsequent carving process, the wood may crack or deform due to uneven stress. This uneven moisture content will not only affect the carving accuracy but also directly affect the stability of the final furniture, resulting in deformation or even fracture of the finished product during use.

[0005] Especially in the carving link, the existing carving machines usually use fixtures or suction to fix. This fixing method is difficult to maintain the absolute stability of the wood when subjected to the cutting force of the carving knife and the vibration of the equipment, resulting in shaking or displacement during the carving process, thus reducing the carving accuracy. At the same time, the openwork carving process often involves large-area hollow carving, and the local support structure of the wood is weakened. If there is no effective bottom support during the carving process, the wood is prone to deformation or even fracture under uneven stress. Especially during the fine carving process, the thickness of the wood is relatively thin, and uneven stress is extremely likely to cause local structural damage, resulting in workpiece scrapping or the need for additional repair, which not only increases the production cost but also affects the production efficiency. Summary of the Invention

[0006] The main object of the present invention is to provide a manufacturing process for openwork furniture, aiming to improve the moisture content and surface flatness of wood by drying the wood and performing plasma treatment on the surface, so as to ensure uniform stress on the wood during the carving process and avoid wood breakage; at the same time, a manufacturing device for openwork furniture is provided, which can stably support the wood during the carving process through a support component, effectively preventing deformation or breakage caused by uneven stress. To achieve the above object, the present invention provides a manufacturing process for openwork furniture, including the following steps: S1. Design and drawing: Use computer-aided design software to draw a two-dimensional drawing of the openwork furniture, and then convert the drawn drawing into machining codes for a numerical control engraving machine. S2. Raw material treatment: Select wood without cracks on the surface, and then control the moisture content of the wood at 8%-12% through drying treatment. S3. Wood surface activation treatment: Use a plasma generator to perform plasma treatment on the wood surface to obtain wood with an etched surface. S4. Carving: Place the wood with a plasma-etched surface in step S3 on the workbench of a numerical control engraving machine for fixation, and then start the numerical control engraving machine to carve the wood to obtain a blank of the openwork component. S5. Post-treatment: Trim and polish the carved component blank in step S4, assemble the trimmed and polished components to obtain a finished furniture; finally, clean and coat the surface of the finished furniture to obtain a finished openwork furniture with coating. S6. Quality inspection and packaging: Inspect the finished openwork furniture in step S5, check its appearance quality, dimensional accuracy, and structural strength; then package the qualified products.

[0007] In a possible implementation manner, when performing plasma treatment on the wood in S2, the wood is placed in a vacuum environment, and at the same time, a mixed gas composed of oxygen, argon, and organosilicon compounds is introduced during the plasma treatment process, and a nanoscale organosilicon coating will be formed on the wood surface.

[0008] In a possible implementation manner, in step S2, the wood is placed in a microwave drying device, and microwave and ultrasonic waves are used for combined drying.

[0009] The present invention also provides a production device for openwork furniture, which is used to complete the carving process in the production process of a piece of openwork furniture; it includes a machine frame and a positioning component and a carving component arranged on the machine frame. The positioning component includes a fixed frame arranged on the machine frame. The middle part of the fixed frame is hollow and is used to carry and fix the wood to be processed. The carving component is located above the fixed frame and is slidably arranged on the machine frame. The carving component is used to carve and process the wood on the fixed frame. It further includes a support component located below the fixed frame and slidably arranged on the machine frame. The support component and the carving component are symmetrically arranged with the fixed frame as the center plane, and a transmission component is connected between the support component and the carving component. The transmission component is used to control the synchronous movement of the support component and the carving component. When the carving component carves the wood to be processed, the support component abuts against the lower part of the wood processing part to support the wood.

[0010] In a possible implementation manner, the transmission component includes an upper mounting plate and a lower mounting plate slidably arranged on the machine frame. The upper mounting plate and the lower mounting plate are respectively located above and below the fixed frame. Slide rails and transmission screws parallel to the slide rails are fixedly arranged on both the upper mounting plate and the lower mounting plate. Sliders threadedly engaged with the transmission screws are slidably arranged on the slide rails. The carving component and the support component are respectively arranged on the upper mounting plate and the lower mounting plate through the sliders. It further includes a driving motor for driving a pair of transmission screws to rotate synchronously.

[0011] In a possible implementation manner, the support component includes a connecting bracket arranged on the lower mounting plate. A support block is slidably arranged on the connecting bracket. A plurality of sliding grooves are arranged at one end of the support block facing the fixed frame. Support columns abutting against the lower surface of the wood are slidably arranged in the plurality of sliding grooves. Abutting springs are arranged between the support columns and the sliding grooves. It further includes an adjusting screw threadedly connected to the connecting bracket and rotatably matched with the support block. A driving part is arranged at one end of the adjusting screw away from the support block. The driving part is used to drive the adjusting screw to rotate to control the support block to move away from or close to the wood.

[0012] In a possible implementation manner, the carving component includes a mounting frame slidably arranged on the upper mounting plate through a slider. A main shaft is rotatably connected to the mounting frame. One end of the main shaft is connected to a carving motor, and a tool shank joint is arranged at the center of the other end. The tool shank joint is connected to a carving tool bit.

[0013] In a possible implementation, the main shaft is hollow and has an air inlet provided on its circumferential side. An air inlet ring fixedly connected to the mounting frame is rotatably provided at the air inlet, and the air inlet ring is connected to an air pump through an air pipe; one end of the main shaft opposite to the tool shank joint is also provided with a blowing ring. A plurality of air outlets are provided at one end of the blowing ring facing the engraving tool head, and the air outlets are communicated with the air inlet for blowing air flow towards the engraving tool head.

[0014] In a possible implementation, it further includes a material suction assembly corresponding to the positions of the engraving assembly and the support assembly respectively. The material suction assembly includes a connecting cover and a suction hood wrapped outside the connecting cover. A negative pressure chamber is formed between the suction hood and the connecting cover. A material suction port communicating with the negative pressure chamber is provided on the circumferential side of one end of the connecting cover close to the wood. A discharge port communicating with the negative pressure chamber is provided on the suction hood. The discharge port is connected to a waste box provided on the machine frame through a material suction pipe, and a suction air pump is provided on the waste box; a connection port is further provided in the center of the connecting cover, and a connecting pipe passing through the connection port is provided on the connecting bracket and the mounting frame. The connecting cover is slidably matched with the connecting pipe, and a return spring is provided between the connecting cover and the connecting pipe.

[0015] In a possible implementation, the fixed frame includes a pair of vertical pipes slidably provided on the bracket and a pair of horizontal pipes slidably provided on the vertical pipes. The pair of vertical pipes includes connecting sections on both sides and a support section in the middle. The pair of horizontal pipes are respectively slidably provided on the connecting sections on both sides of the vertical pipes through a slide rail-slider structure; the upper surfaces of the horizontal pipes and the upper surface of the support section of the vertical pipes are at the same height and are both provided with clamping structures for clamping the edges of the wooden board; It further includes drive screws respectively provided between the pair of horizontal pipes and the pair of vertical pipes. The drive screws are threadedly connected to the horizontal pipes and the vertical pipes and are connected to a power source at one end. The drive screws are used to drive the pair of horizontal pipes and the pair of vertical pipes to move away from or close to each other.

[0016] In summary, the beneficial effects of the present invention are as follows: Compared with the prior art, in the aspect of wood processing, by introducing the combined drying technology of microwave and ultrasonic wave, the moisture inside the wood evaporates evenly, avoiding the problem of uneven moisture content caused by traditional natural air drying or hot air drying, thereby reducing the risks of deformation and cracking during engraving due to uneven local moisture volatilization of the wood. At the same time, the plasma surface activation treatment technology forms a nano-scale silicone coating on the wood surface, which not only enhances the adhesion of subsequent coating, improves the uniformity and durability of the coating, but also effectively reduces the microscopic roughness of the wood surface, making the tool resistance during engraving more uniform, further improving the engraving accuracy and reducing the tearing phenomenon of wood fibers during the engraving process.

[0017] Meanwhile, during the engraving process, the present invention designs a support component with synchronous movement, enabling the wood to maintain stable stress during engraving. The support component can move synchronously with the engraving tool, providing continuous support to the wood throughout the engraving process, balancing the tool's acting force, and reducing deformation or damage caused by uneven stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 Stereoscopic structure diagram of Embodiment 2 of the present invention; Figure 2 Structure diagram of the engraving component and the support component in Embodiment 2 of the present invention; Figure 3 Structure diagram of the fixed bracket in Embodiment 2 of the present invention; Figure 4 Structure diagram of the transmission component in Embodiment 2 of the present invention; Figure 5 Stereoscopic diagram of the engraving component in Embodiment 2 of the present invention; Figure 6 For Figure 5 Enlarged view of the air inlet ring; Figure 7 Bottom structure diagram of the main shaft in Embodiment 2 of the present invention; Figure 8 Stereoscopic diagram of the support component in Embodiment 2 of the present invention; Figure 9 Exploded view of the support component in Embodiment 2 of the present invention; Figure 10 Structure diagram of the material suction component in Embodiment 2 of the present invention.

[0020] Explanation of the reference numerals in the drawings: 1. Frame; 2. Positioning component; 3. Engraving component; 31. Mounting frame; 32. Spindle; 33. Engraving motor; 34. Engraving cutter head; 35. Air inlet ring; 36. Blowing ring; 37. Air outlet; 4. Fixed frame; 41. Vertical pipe; 42. Horizontal pipe; 43. Connection section; 44. Support section; 45. Driving screw; 46. Pressing plate; 5. Transmission component; 51. Upper mounting plate; 52. Lower mounting plate; 53. Connecting plate; 54. Longitudinal screw; 55. Longitudinal motor; 56. Transmission screw; 57. Belt transmission component; 58. Driving motor; 6. Support component; 61. Connection bracket; 62. Support block; 63. Slide groove; 64. Support column; 65. Abutting spring; 66. Adjusting screw; 7. Material suction component; 71. Suction hood; 72. Connection cover; 73. Material suction port; 74. Scrap box; 75. Discharge port; 76. Connecting pipe; 77. Return spring. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Embodiment

[0022] The present invention provides a production process for openwork furniture, which includes the following steps: S1. Design and drawing: Use computer-aided design software, such as AutoCAD software, to draw two-dimensional drawings of openwork furniture, and then convert the drawn drawings into machining codes for a numerical control engraving machine; S2. Raw material treatment: Select wood without cracks on the surface, and then control the moisture content of the wood at 8%-12% through drying treatment; Specifically, when drying the wood, an existing microwave drying device can be selected for drying treatment; place the wood to be processed on the conveyor belt of the microwave drying device, and then send the wood to the cavity with a microwave emission source through the conveyor belt. At this time, the microwave emission source will emit microwaves, causing the water molecules inside the wood to vibrate rapidly to generate heat and start evaporating water. At the same time, an ultrasonic generator is also provided in the cavity. The ultrasonic generator is also an existing device, which can be directly fixedly installed in the cavity of the existing microwave drying device. At the same time, the ultrasonic generator is directly connected to the control system of the microwave drying device to complete the control of the ultrasonic generator. The ultrasonic generator and the control system are connected by wires, and the control of the ultrasonic generator can be realized through a wired circuit; therefore, no further elaboration is made.

[0023] When the microwave emitter performs microwave operation on wood, the ultrasonic generator starts, and the ultrasonic wave acts on the wood. Its high-frequency vibration accelerates the movement of water molecules inside the wood, destroys the binding force between water molecules and wood cells, and assists the moisture to migrate to the wood surface faster.

[0024] Among them, microwave drying is based on the thermal effect and non-thermal effect of microwaves. In terms of the thermal effect, microwaves can cause the water molecules inside the wood to generate high-frequency vibrations, and the mutual friction between molecules generates heat. Since the moisture distribution inside the wood is relatively uniform, this heating method can achieve simultaneous heating of the inside and outside of the wood, avoiding the situation of surface cracking and excessive internal moisture content of the wood caused by the temperature gradient from outside to inside in the traditional drying method, making the drying more uniform and effectively reducing the deformation caused by uneven drying. The non-thermal effect is reflected in the influence of microwaves on the molecular structure of water molecules inside the wood, reducing the binding force between water molecules and the wood cell wall and promoting moisture migration.

[0025] Ultrasonic drying utilizes the cavitation effect. When ultrasonic waves propagate inside the wood, they will cause tiny bubbles to form in the moisture in the wood pores. These bubbles rapidly expand and close under the action of ultrasonic waves, generating strong impacts and microjets, destroying the binding structure between the internal moisture and the cell wall of the wood, and accelerating the migration of moisture from the inside of the wood to the surface. At the same time, ultrasonic waves can also have a certain micro-vibration effect on the wood structure, further promoting moisture diffusion.

[0026] Through the combined action of microwaves and ultrasonic waves, not only is the moisture migration speed accelerated and the drying efficiency improved, but also the two cooperate with each other to make the internal moisture distribution of the wood more uniform during the drying process, thereby accurately controlling the moisture content of the wood within an appropriate range and achieving the effect of improving the stability and durability of the wood.

[0027] S3. Activation treatment of the wood surface: Use a plasma generator to perform plasma treatment on the wood surface to obtain wood with an etched surface; Specifically, to achieve the activation of the wood surface with existing equipment, first place the carefully selected wood with no cracks on the surface and a moisture content of 8%-12% in a reaction kettle with a vacuum function. The reaction kettle uses the working principle of a vacuum pump to extract the internal gas through mechanical movement, creating a vacuum environment inside the reaction kettle. In this environment, the interference of external impurity gases on subsequent treatment is reduced, creating a relatively pure space for the activation of the wood surface.

[0028] Next, install the electrodes of the plasma generator at appropriate positions inside the reaction kettle, with the electrodes maintaining a distance of 1 - 3 centimeters from the wood surface. When the plasma generator is started, gas ionization occurs inside the generator through a high-frequency electric field or other excitation methods to generate plasma. The plasma is rich in high-energy particles, and these particles move at high speeds under the action of the electric field and bombard the wood surface. Under the impact of the particles, the chemical bonds on the wood surface are broken, and the atomic arrangement changes, thereby achieving the preliminary activation of the wood surface.

[0029] After that, use ordinary gas cylinders filled with oxygen, argon, and organosilicon compounds (the organosilicon compounds are converted into a vapor state with the help of a vaporization device), and connect gas flow controllers. Then, introduce the mixed gas into the reaction kettle according to a certain ratio (such as approximately 1:2:1). As an inert gas, argon is introduced first to stabilize the plasma discharge process and provide a stable environmental basis for subsequent reactions. Oxygen is then introduced. Under the high-energy environment of the plasma, oxygen undergoes an oxidation reaction with the atoms on the wood surface, further changing the chemical properties of the wood surface and increasing the active sites on the surface. Finally, the organosilicon compound vapor is introduced. Under the continuous action of the plasma and the attraction of the active sites on the wood surface, the organosilicon compound undergoes complex physical and chemical reactions with the wood surface. Some chemical bonds in the organosilicon compound are broken and recombined with the atoms or groups on the wood surface, gradually forming a nanoscale organosilicon coating on the wood surface.

[0030] Through this series of treatments, multiple effects are achieved. First, the waterproof performance of the wood is improved. The principle is that the nanoscale organosilicon coating has a special molecular structure, and the silicon-oxygen bond and organic groups endow the coating with low surface energy characteristics. When water contacts the coating surface, the cohesive force between water molecules is greater than the adhesive force between water molecules and the coating surface, causing the water to form beads on the coating surface and making it difficult to infiltrate the wood, thereby effectively preventing water penetration and achieving the waterproof effect. Second, the wear resistance of the wood is enhanced. This is because the silicon-oxygen bond in the organosilicon coating has a relatively high bond energy, endowing the coating with a certain hardness, and the coating adheres tightly to the wood surface, filling the microscopic pores and defects on the wood surface and enhancing the overall strength of the wood surface. When subjected to friction, the coating can withstand a certain degree of external force, reducing the direct contact between the wood surface and the friction object, and thus improving the wear resistance of the wood. In addition, the wood surface becomes more uniform and flat after activation treatment. During the subsequent carving process, when the tool contacts the wood surface, the force is more uniform and stable, enabling more precise carving according to the preset path and improving the carving accuracy. This is because the microscopic structure of the wood surface is optimized during the plasma treatment and coating formation process, and the surface unevenness is reduced, so that the tool will not deviate from the path due to the small undulations on the surface during carving, ensuring the smoothness of the carving lines and the clarity of the patterns.

[0031] S4. Engraving: Place the wood with its surface plasma-etched in S3 on the workbench of a CNC engraving machine for fixation. Then start the CNC engraving machine to engrave the wood to obtain a blank of the component after openwork engraving. S5. Post-treatment: Trim and polish the blank of the component engraved in S4, assemble the trimmed and polished components to obtain a finished piece of furniture. Finally, clean and coat the surface of the finished furniture to obtain a finished openwork engraved furniture with coating. S6. Quality inspection and packaging: Inspect the openwork engraved furniture with coating in S5, checking its appearance quality, dimensional accuracy, and structural strength. Then package the qualified products. Embodiment

[0032] This embodiment discloses a production device for openwork engraved furniture, which is used to complete the engraving process in a production process of an openwork engraved furniture. Refer to Figures 1 to 10 , including a frame 1 and a positioning component 2 and an engraving component 3 arranged on the frame 1. The positioning component 2 includes a fixed frame 4 arranged on the frame 1. The middle of the fixed frame 4 is hollow and is used to carry and fix the wood to be processed.

[0033] Specifically, the fixed frame 4 includes a pair of vertical pipes 41 and a pair of horizontal pipes 42. The pair of vertical pipes 41 includes connecting sections 43 on both sides and a supporting section 44 in the middle. The pair of horizontal pipes 42 are respectively slidably arranged on the connecting sections 43 on both sides of the vertical pipes 41 and the supporting section 44 arranged in the middle through a slide rail-slider structure. Among them, the pair of vertical pipes 41 are slidably arranged on the frame 1 through a slide rail-slider structure, and the pair of horizontal pipes 42 are slidably arranged on the connecting sections 43 of the pair of vertical pipes 41 through a slide rail-slider structure. The horizontal pipe 42 can reciprocally slide along the length and width directions of the vertical pipe 41 through the slide rail-slider structure, that is, the slide rail-slider structure is a composite setting. The horizontal pipe 42 can also slide relative to the slider arranged on the slide rail, so that when the pair of vertical pipes 41 approach or move away from each other under the action of the driving screw 45, the position of the horizontal pipe 42 will not move under the fixing action of the driving screw 45. And, driving screws 45 are threadedly connected between the sliders corresponding to the pair of vertical pipes 41 and between the sliders corresponding to the pair of horizontal pipes 42. The two ends of the driving screw 45 are provided with reverse threads, so as to be able to control the pair of vertical pipes 41 and the pair of horizontal pipes 42 to move away from or close to each other to adapt to woods of different specifications and sizes. Among them, the distance between the pair of horizontal pipes 42 corresponds to the width of the wood, and the distance between the pair of vertical pipes 41 is used to correspond to the length of the wood.

[0034] Meanwhile, in order to better clamp the wood, the upper surface of the horizontal pipe 42 and the upper surface of the support section 44 of the vertical pipe 41 are flush with each other and are both provided with clamping structures for clamping the edge of the wood board; the clamping structure is a conventional means in the art and can be fixed by vacuum adsorption or physical clamping; in this embodiment, physical clamping is used for fixation. The clamping structure includes a pressing plate 46, and the pressing plate 46 can be fixed to the upper surfaces of the horizontal pipe 42 and the support section 44 by bolts. A gap is formed between the pressing plate 46 and the horizontal pipe 42 and the support section 44, and the side of the wood can be pressed into the gap, thereby realizing the fixation of the wood.

[0035] Meanwhile, in the above structure, the driving screw 45 is symmetrically provided with threads in opposite directions, which are respectively threadedly connected to a pair of horizontal pipes 42 and a pair of vertical pipes 41 and are connected to a power source at one end. The power source can be manually rotated by a person or driven and controlled by a servo motor.

[0036] Above the fixed frame 4, a carving assembly 3 is provided. The carving assembly 3 is slidably arranged on the machine frame 1 through a transmission assembly 5 and is used for carving and processing the wood on the fixed frame 4; the transmission assembly 5 includes an upper mounting plate 51 slidably arranged on the machine frame 1. Connecting plates 53 are arranged on both sides of the upper mounting plate 51, and the connecting plates 53 are connected to the machine frame 1 through a slide rail and slider structure; among them, the slide rail and slider structure of the upper mounting plate 51 is connected to a longitudinal screw 54, and the longitudinal screw 54 is connected to a longitudinal motor 55. By driving the longitudinal screw 54 to rotate through the longitudinal motor 55, the upper mounting plate 51 can be driven to reciprocate along the length direction of the machine frame 1.

[0037] On the upper mounting plate 51, a slide rail and a transmission screw 56 parallel to the slide rail are fixedly arranged. A slider threadedly engaged with the transmission screw 56 is slidably arranged on the slide rail, and the carving assembly 3 is arranged on the slider. Among them, the transmission screw 56 can drive the carving assembly 3 to reciprocate horizontally on the upper mounting plate 51 through a driving motor 58; and the longitudinal screw 54 can drive the carving assembly 3 to reciprocate along the width direction of the machine frame 1 through the upper mounting plate 51. By the longitudinal screw 54 and the transverse screw, the position control and adjustment of the carving assembly 3 can be realized, so that the carving assembly 3 can move along a specified path according to the drawing.

[0038] Below the fixed frame 4, a support assembly 6 is slidably arranged. The support assembly 6 is arranged on a lower mounting plate 52, and the lower mounting plate 52 is fixedly connected to the upper connecting plate 53 by being fixed to the connecting plate 53. When the longitudinal screw 54 drives the carving assembly 3 to move along the length direction of the machine frame 1 through the upper mounting plate 51, it will drive the support assembly 6 to move through the connecting plate 53, and finally complete the synchronous movement of the carving assembly 3 and the support assembly 6 along the length direction of the machine frame 1.

[0039] Meanwhile, on the lower mounting plate 52, there are also slide rails and a transmission screw rod 56 parallel to the slide rails fixedly arranged in the same way as on the upper fixing plate. A slider threadedly engaged with the transmission screw rod 56 is slidably arranged on the slide rail, and the support assembly 6 is arranged on the lower mounting plate 52 through the slider. Among them, the two transmission screw rods 56 corresponding to the engraving assembly 3 and the support assembly 6 respectively are connected by a transmission belt assembly 57. The transmission belt assembly 57 is a prior art, including transmission wheels and a belt. The belt can connect the transmission wheels arranged at the ends of the two transmission screw rods 56, so that a driving motor 58 can drive the two transmission screw rods 56 to rotate synchronously, realizing the synchronous movement of the engraving assembly 3 and the support assembly 6 in the width direction of the frame 1.

[0040] Among them, the support assembly 6 abuts against the lower part of the wood processing area and is used to support the wood. Specifically, the support assembly 6 includes a connecting bracket 61 arranged on the lower mounting plate 52. A support block 62 is slidably arranged on the connecting bracket 61. A plurality of sliding grooves 63 are arranged at one end of the support block 62 facing the fixed frame 4. A support column 64 abutting against the lower surface of the wood is slidably arranged in the plurality of sliding grooves 63. An abutting spring 65 is arranged between the support column 64 and the sliding groove 63. It also includes an adjusting screw rod 66 threadedly connected to the connecting bracket 61 and rotatably matched with the support block 62. A driving part is arranged at one end of the adjusting screw rod 66 away from the support block 62, and the driving part is used to drive the adjusting screw rod 66 to rotate to control the support block 62 to move away from or close to the wood.

[0041] And the plurality of sliding grooves 63 arranged at one end of the support block 62 facing the fixed frame 4, and the support columns 64 slidably arranged in the sliding grooves 63 and abutting against the lower surface of the wood, together with the abutting spring 65 between the support columns 64 and the sliding grooves 63, form an adaptive support system. When the wood is placed on the fixed frame 4 for engraving, since the wood may not be absolutely flat and there are height differences in each part, the abutting spring 65 can automatically adjust the extending length of the support column 64 according to the undulation of the lower surface of the wood, so that each support column 64 can closely fit the lower surface of the wood, thereby providing uniform and stable supporting force for the wood, avoiding deformation or shaking of the wood due to uneven local stress, and ensuring the stability of the engraving process, which is crucial for improving the engraving accuracy. At the same time, a buffer gasket is wrapped at the end of the support column 64 abutting against the wood, and the buffer gasket can play a buffering role in the shaking of the wood during the processing, thereby reducing the vibration of the wood and affecting the accuracy of the processing.

[0042] Meanwhile, the adjusting screw 66 is threadedly connected to the connecting bracket 61 and rotatably engaged with the support block 62. The driving portion provided at one end of the adjusting screw 66 away from the support block 62 further enhances the adaptability of the support assembly 6. By driving the adjusting screw 66 to rotate, due to the characteristics of the threaded connection, the rotation of the adjusting screw 66 will be converted into the linear movement of the support block 62 along the connecting bracket 61, so that the relative distance between the support block 62 and the wood can be accurately controlled to move away from or close to the wood. In actual operation, the positions and heights of woods with different sizes and shapes on the fixed frame 4 may vary. Through the adjustment of the adjusting screw 66, the support block 62 can quickly and accurately reach the appropriate position, providing the best support for the wood, further ensuring the stability of the wood during the engraving process, ensuring that the engraving tool can engrave precisely according to the preset path, and ultimately improving the engraving accuracy and product quality.

[0043] Further, the engraving assembly 3 includes a mounting bracket 31 slidably disposed on the upper mounting plate 51 through a slider. A main shaft 32 is rotatably connected to the mounting bracket 31. One end of the main shaft 32 is connected to an engraving motor 33, and a tool holder joint is provided at the center of the other end. The tool holder joint is connected to an engraving tool head 34.

[0044] Meanwhile, the main shaft 32 is hollowly provided and an air inlet is provided on its circumferential side. An air inlet ring 35 fixedly connected to the mounting bracket 31 is rotatably disposed at the air inlet. The air inlet ring 35 is connected to an external air pump through a flexible air pipe; a blowing ring 36 is further provided at one end of the main shaft 32 opposite to the tool holder joint. A plurality of air outlet holes 37 are provided at one end of the blowing ring 36 facing the engraving tool head 34. The air outlet holes 37 are communicated with the air inlet for blowing air flow toward the engraving tool head 34.

[0045] The mounting bracket 31 is slidably disposed on the upper mounting plate 51 through a slider. This structural design endows the engraving assembly 3 with flexibility and adjustability in the horizontal direction. During the actual engraving process, different through-engraving patterns or wood position requirements are different. The cooperation between the slider and the upper mounting plate 51 enables the mounting bracket 31 to be conveniently moved to the required position, thereby accurately positioning the engraving area, providing a basis for position adjustment for precise engraving, and directly improving the engraving accuracy.

[0046] One end of the main shaft 32 is connected to the engraving motor 33, providing a power source for the entire engraving action. The engraving motor 33 drives the main shaft 32 to rotate at a high speed, and then the engraving tool head 34 connected to the tool holder joint at the other end of the main shaft 32 performs the engraving operation. Stable and strong power transmission ensures that the engraving tool head 34 can efficiently and accurately cut the wood according to the preset program, ensuring the smoothness of the engraving lines and the accuracy of the pattern, which plays a key role in ensuring the engraving accuracy.

[0047] The hollow design of the main shaft 32 and related structures such as the air inlet ring 35, the air blowing ring 36, the air pipes, and the air pump have unique and important functions. The air inlet provided on the circumferential side of the main shaft 32, in cooperation with the air inlet ring 35 rotatably arranged at the air inlet and fixedly connected to the mounting bracket 31, enables the air flow conveyed by the air pump through the flexible air pipe to stably enter the interior of the main shaft 32. Since the air inlet ring 35 is fixed to the mounting bracket 31, the stable input of the air flow can be ensured even when the main shaft 32 is rotating at a high speed. The air flow follows the hollow main shaft 32 and blows out from a plurality of air outlets 37 of the air blowing ring 36 provided at the end opposite to the tool holder joint, directly acting on the engraving tool head 34.

[0048] The structure of the main shaft 32 enables the engraving assembly 3 to blow out air flow towards the engraving tool head 34 during operation, thereby timely blowing away the wood chips generated during engraving. During engraving, if the wood chips are not cleaned in time, they will accumulate near the engraving tool head 34, interfering with the normal cutting path of the tool head and affecting the engraving accuracy. However, this structure effectively avoids the problem of wood chip accumulation through continuous air blowing, ensuring that the engraving tool head 34 always operates in a clear working environment and further improving the engraving accuracy. On the other hand, the air flow blowing on the engraving tool head 34 can play a role in cooling and temperature reduction of the tool head. During actual engraving, the intense friction between the tool head and the wood will generate a large amount of heat, and too high a temperature will accelerate the wear of the tool head and shorten its service life. The cooling effect of the air flow can reduce the temperature of the tool head, slow down the wear rate of the tool head, thereby extending the service life of the engraving tool head 34 and reducing the production cost. At the same time, timely blowing away the wood chips also helps to optimize the entire working environment, reducing the impact of wood chip flying on the health of the operator and the pressure on the cleanliness of the working site.

[0049] Furthermore, in order to realize the cleaning of wood chips, a suction component 7 is also provided corresponding to the positions of the engraving component 3 and the support component 6 respectively. The suction component 7 includes a connection cover 72 and a suction hood 71 wrapped outside the connection cover 72. A negative pressure chamber is formed between the suction hood 71 and the connection cover 72. A suction port 73 communicating with the negative pressure chamber is opened on the circumferential side of the end of the connection cover 72 close to the wood. A discharge port 75 communicating with the negative pressure chamber is provided on the suction hood 71. The discharge port 75 is connected to a waste box 74 provided on the machine frame 1 through a suction pipe, and a suction pump is provided on the waste box 74; a connection port is also provided in the center of the connection cover 72, and a connection pipe 76 is provided on the connection bracket 61 and the mounting bracket 31 passing through the connection port. The connection cover 72 is slidably matched with the connection pipe 76, and a return spring 77 is provided between the connection cover 72 and the connection pipe 76.

[0050] The connection cover 72 is wrapped by the suction cover 71 to form a negative pressure chamber. The connection cover 72 is designed near the suction port 73 on the side of one end of the wood, so that the suction component 7 can be close to the wood carving part. When the suction pump on the waste box 74 is started, based on the principle of atmospheric pressure difference, the air in the negative pressure chamber is extracted through the suction pipe, so that the negative pressure chamber forms an environment lower than the external atmospheric pressure to generate negative pressure. The outside air entrains the wood chips and is sucked into the negative pressure chamber from the suction port 73 due to the pressure difference, which effectively reduces the flying of wood chips in the working area, greatly improves the working environment, and protects the health of operators. The discharge port 75 on the suction cover 71 is connected to the waste box 74 on the frame 1 through the suction pipe. The wood chips sucked into the negative pressure chamber are transported to the waste box 74 for centralized storage along the airflow through the discharge port 75 and the suction pipe, which prevents the wood chips from being scattered randomly, keeps the working site clean, and provides an orderly environment for carving work. The central connecting port of the connecting cover 72 is slidably matched with the connecting bracket 61 and the connecting tube 76 on the mounting frame 31, and a reset spring 77 is provided. When engraving, the movement of the wood and related components generates external force, and the reset spring 77 deforms to make the connecting cover 72 slide on the connecting tube 76 to adjust its position, adapting to the displacement of the wood and ensuring that the suction port 73 effectively absorbs wood chips. After the external force disappears, the reset spring 77 returns the connecting cover 72 to its original position by elastic restoring force, continuously and efficiently collects wood chips, and ensures that the wood chip cleaning work during the engraving process is stable and continuous without being disturbed by wood chips, thereby ensuring the smooth progress of the engraving work.

[0051] Working principle: The wood to be processed is placed on a fixed frame 4 consisting of a pair of vertical tubes 41 and a pair of horizontal tubes 42. The vertical tube 41 slides flexibly on the frame 1 with the help of a slide rail slider structure, and the horizontal tube 42 is also set on the connecting section 43 on both sides of the vertical tube 41 through the slide rail slider structure. At this time, the power source drives the driving screw 45 with reverse threads at both ends to rotate. Based on the principle of thread transmission, the rotation of the driving screw 45 is converted into a linear motion of the vertical tube 41 and the horizontal tube 42, so that they can approach or move away from each other, accurately adapting to the length and width of wood of different specifications. Subsequently, the wood is firmly fixed by using the clamping structure set on the upper surface of the horizontal tube 42 and the vertical tube 41 support section 44. In this process, the slide rail slider structure provides a stable sliding foundation to ensure that the vertical tube 41 and the horizontal tube 42 can smoothly adjust their positions; the driving screw 45 cleverly converts the rotation of the power source into precise linear displacement to achieve precise adaptation of the wood size; and the clamping structure firmly fixes the wood through the friction generated by the pressing plate 46, the horizontal tube 42, and the support section 44 on the side of the wood.

[0052] Next, the engraving component 3 starts to work. It is located above the fixed frame 4 and is closely connected to the machine frame 1 through the transmission component 5. In the transmission component 5, the connecting plates 53 on both sides of the upper mounting plate 51 are connected to the machine frame 1 by means of a slide rail-slider structure. The longitudinal motor 55 drives the longitudinal screw 54 to rotate. According to the principle of screw drive, the upper mounting plate 51 is driven to move reciprocally along the length direction of the machine frame 1. At the same time, when the drive motor 58 drives the transmission screw 56 to rotate, the slide rail and the transmission screw 56 provided on the upper mounting plate 51 enable the mounting bracket 31 to perform a reciprocating motion in the horizontal direction through the slider. One end of the main shaft 32 on the mounting bracket 31 is connected to the drive motor 58, and the other end is connected to the engraving cutter head 34. The engraving motor 33 provides strong power for the entire engraving process, driving the cutter head to rotate at high speed to engrave the wood. In addition, the air pump steadily sends air flow into the air inlet on the periphery of the main shaft 32 through the air pipe. The air flow follows the hollow main shaft 32 and blows out from the air outlet 37 of the blowing ring 36 provided at the end opposite to the tool handle joint, directly acting on the engraving cutter head 34. With such a structural design, the transmission component 5 utilizes the low-friction characteristics of the slide rail-slider and the principle of screw drive to achieve flexible and precise position adjustment of the engraving component 3 in the length and width directions of the machine frame 1, enabling it to move strictly along the specified path of the preset drawing, greatly improving the engraving accuracy. The main shaft 32 is connected to the drive motor 58, efficiently converting electrical energy into mechanical energy, providing stable and strong cutting power for the engraving cutter head 34, and ensuring the efficient progress of the engraving process. The hollow structure of the main shaft 32 and related components such as the air inlet ring 35 and the blowing ring 36 utilize the principle of gas flow. On the one hand, the blown air flow can timely blow away the wood chips generated during the engraving process, preventing the wood chips from accumulating near the engraving cutter head 34 and interfering with the normal cutting path, further improving the engraving accuracy. On the other hand, the air flow blows on the cutter head, effectively reducing the high temperature generated by the intense friction between the cutter head and the wood, slowing down the wear speed of the cutter head, extending the service life of the engraving cutter head 34, reducing production costs, and at the same time optimizing the entire working environment, reducing the impact of wood chip flying on the health of operators and the pressure on the cleanliness of the working site.

[0053] During this process, when the longitudinal screw 54 drives the engraving assembly 3 to move along the length direction of the frame 1, the support assembly 6 will also move synchronously through the linkage of the connecting plate 53. The lower mounting plate 52 is also provided with a slide rail and a transmission screw 56. Similar to the upper mounting plate 51, the support assembly 6 is arranged on the lower mounting plate 52 through a slider. The two transmission screws 56 corresponding to the engraving assembly 3 and the support assembly 6 are connected by a transmission belt assembly 57 and are driven to rotate synchronously by a driving motor 58, so as to realize the synchronous movement of the two in the width direction of the frame 1. During the wood engraving process, the support block 62 of the support assembly 6 is arranged on the lower mounting plate 52 through the connecting bracket 61. A plurality of chutes 63 are arranged at one end of the support block 62 facing the fixed frame 4. A support column 64 abuting against the lower surface of the wood is slidably arranged in the chute 63. An abutting spring 65 is arranged between the support column 64 and the chute 63. Since the surface of the wood may not be absolutely flat and there are height differences in each part, the abutting spring 65 can automatically adjust the extending length of the support column 64 according to the undulation of the lower surface of the wood. By using the elastic deformation principle of the spring, each support column 64 can closely fit the lower surface of the wood, providing a uniform and stable supporting force for the wood, effectively avoiding deformation or shaking of the wood due to uneven local stress, and strongly ensuring the stability of the engraving process, which plays a crucial role in improving the engraving accuracy. In addition, the operator can also rotate the adjusting screw 66 through the driving part. According to the screw transmission principle, the rotation is accurately converted into the linear movement of the support block 62 along the connecting bracket 61, so that the distance between the support block 62 and the wood can be accurately controlled, further enhancing the adaptability of the support assembly 6 to woods of different sizes and shapes.

[0054] The suction assembly 7 is respectively arranged to correspond to the positions of the carving assembly 3 and the support assembly 6. When the suction pump on the waste box 74 is started, based on the atmospheric pressure difference principle, the air in the negative pressure cavity between the suction hood 71 and the connecting hood 72 is extracted through the suction pipe, so that the negative pressure cavity forms an environment lower than the external atmospheric pressure, thereby generating negative pressure. At this time, the outside air envelops the wood chips generated during the carving process, and under the action of the pressure difference, it is sucked into the negative pressure cavity from the suction port 73 opened on the side of the connecting hood 72 near one end of the wood, and then follows the air flow through the discharge port 75 set on the suction hood 71, and is transported to the waste box 74 set on the frame 1 through the suction pipe for centralized storage. During the engraving process, as the wood and related components move, the connection cover 72 will be subjected to external force. At this time, the center of the connection cover 72 slides with the connection bracket 61 and the connection tube 76 on the mounting frame 31, and the return spring 77 provided between the connection cover 72 and the connection tube 76 plays a role. The return spring 77 deforms to make the connection cover 72 slide on the connection tube 76, thereby adjusting the position to adapt to the displacement of the wood, ensuring that the suction port 73 can always effectively absorb wood chips. When the external force disappears, the return spring 77 returns the connection cover 72 to its original position by virtue of its own elastic restoring force, and continuously and efficiently collects wood chips.

[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A process for making openwork furniture, characterized in that: The following steps are involved: S1. Design and drawing: Use computer-aided design software to draw two-dimensional drawings of openwork furniture, and then convert the drawn drawings into processing codes for CNC engraving machines; S2. Raw material processing: Select wood with no cracks on the surface, and then control the moisture content of the wood to 8%-12% through drying; S3, wood surface activation treatment: using a plasma generator to perform plasma treatment on the wood surface, thereby obtaining wood with etched surface; S4, carving: placing the wood with the surface etched by plasma in S3 on the workbench of the CNC engraving machine for fixing, and then starting the CNC engraving machine to carve the wood to obtain a component blank after through-carving; S5, post-processing: trimming and polishing the carved component blanks in S4, assembling the trimmed and polished components to obtain finished furniture; finally, cleaning and painting the surface of the finished furniture to obtain finished painted openwork furniture; S6, quality inspection and packaging: Inspect the openwork furniture after painting in S5 to check its appearance quality, dimensional accuracy and structural strength; then pack the qualified products.

2. The manufacturing process of openwork furniture according to claim 1, characterized in that: When wood is subjected to plasma treatment in S2, the wood is placed in a vacuum environment, and a mixed gas consisting of oxygen, argon and organosilicon compounds is introduced during the plasma treatment process, forming a nano-scale organosilicon coating on the surface of the wood.

3. The manufacturing process of openwork furniture according to claim 1, characterized in that: In step S2, the wood is placed in a microwave drying device and is dried jointly by microwaves and ultrasound.

4. A manufacturing device for openwork furniture, used to complete the carving process in the manufacturing process of an openwork furniture as described in any one of claims 1 to 3; characterized in that: The invention comprises a frame (1), a positioning component (2) and a carving component (3) arranged on the frame (1), wherein the positioning component (2) comprises a fixed frame (4) arranged on the frame (1), the fixed frame (4) being hollow in the middle and used to carry and fix the wood to be processed; the carving component (3) is located above the fixed frame (4) and is slidably arranged on the frame (1), and the carving component (3) is used to perform carving processing on the wood on the fixed frame (4); and further comprises a support component (6) located below the fixed frame (4) and is slidably arranged on the frame (1), the support component (6) and the carving component (3) being symmetrically arranged with the fixed frame (4) as the center plane, and the support component (6) and the carving component (3) being connected to a transmission component (5), and the transmission component (5) being used to control the synchronous movement of the support component (6) and the carving component (3); when the carving component (3) is carving the wood to be processed, the support component (6) is against the bottom of the wood processing part and is used to support the wood.

5. The manufacturing equipment for openwork furniture according to claim 4, characterized in that: The transmission assembly (5) comprises an upper mounting plate (51) and a lower mounting plate (52) which are slidably arranged on the frame (1); the upper mounting plate (51) and the lower mounting plate (52) are respectively located above and below the fixed frame (4); a slide rail and a transmission screw (56) parallel to the slide rail are fixedly arranged on the upper mounting plate (51) and the lower mounting plate (52); a slider which is threadably matched with the transmission screw (56) is slidably arranged on the slide rail; the engraving assembly (3) and the supporting assembly (6) are respectively arranged on the upper mounting plate (51) and the lower mounting plate (52) via the slider; and a driving motor (58) which drives a pair of transmission screws (56) to rotate synchronously is also included.

6. The manufacturing equipment for openwork furniture according to claim 5, characterized in that: The support assembly (6) comprises a connecting bracket (61) arranged on the lower mounting plate (52), a supporting block (62) being slidably arranged on the connecting bracket (61), a plurality of slide grooves (63) being arranged at one end of the supporting block (62) facing the fixed frame (4), a plurality of supporting columns (64) being slidably arranged in the slide grooves (63) and abutting against the lower surface of the wood, an abutting spring (65) being arranged between the supporting column (64) and the slide groove (63); and an adjusting screw (66) being threadedly connected to the connecting bracket (61) and rotatably cooperating with the supporting block (62), a driving part being arranged at one end of the adjusting screw (66) away from the supporting block (62), the driving part being used to drive the adjusting screw (66) to rotate so as to control the supporting block (62) to move away from or closer to the wood.

7. The manufacturing equipment for openwork furniture according to claim 6, characterized in that: The engraving assembly (3) comprises a mounting frame (31) slidably arranged on an upper mounting plate (51) via a slider, a main shaft (32) being rotatably connected to the mounting frame (31), one end of the main shaft (32) being connected to an engraving motor (33), and a tool handle joint being arranged at the center of the other end, and the tool handle joint being connected to an engraving tool head (34).

8. The manufacturing device for openwork furniture according to claim 7, characterized in that: The main shaft (32) is hollow and has an air inlet on its circumference. An air inlet ring (35) fixedly connected to the mounting frame (31) is rotatably arranged at the air inlet. The air inlet ring (35) is connected to an air pump via an air pipe. An air blowing ring (36) is also arranged at one end of the main shaft (32) opposite to the tool handle joint. A plurality of air outlets (37) are arranged at one end of the air blowing ring (36) facing the engraving tool head (34). The air outlets (37) are connected to the air inlet and are used to blow air toward the engraving tool head (34).

9. The manufacturing device for openwork furniture according to claim 8, characterized in that: The device also comprises a material suction assembly (7) corresponding to the positions of the carving assembly (3) and the supporting assembly (6), the material suction assembly (7) comprising a connecting cover (72) and an air suction cover (71) wrapped outside the connecting cover (72), a negative pressure cavity is formed between the air suction cover (71) and the connecting cover (72), a material suction port (73) connected to the negative pressure cavity is provided on the peripheral side of one end of the connecting cover (72) close to the wood, and a material discharge port (75) connected to the negative pressure cavity is provided on the air suction cover (71). The discharge port (75) is connected to a waste box (74) arranged on the frame (1) through a suction pipe, and the waste box (74) is provided with a suction pump; a connection port is also provided at the center of the connection cover (72), and a connection pipe (76) penetrating the connection port is provided on the connection bracket (61) and the mounting frame (31), the connection cover (72) and the connection pipe (76) are slidably matched, and a return spring (77) is provided between the connection cover (72) and the connection pipe (76).

10. The manufacturing equipment for openwork furniture according to claim 4, characterized in that: The fixed frame (4) comprises a pair of vertical tubes (41) slidably arranged on the bracket and a pair of horizontal tubes (42) slidably arranged on the vertical tubes (41); the pair of vertical tubes (41) comprises connecting sections (43) located on both sides and a supporting section (44) in the middle; the pair of horizontal tubes (42) are slidably arranged on the connecting sections (43) on both sides of the vertical tubes (41) through a slide rail slider structure; the upper surface of the horizontal tubes (42) is flush with the upper surface of the supporting section (44) of the vertical tubes (41) and both are provided with a clamping structure for clamping the edge of the wooden board; It also includes a driving screw rod (45) respectively arranged between the pair of horizontal tubes (42) and the pair of vertical tubes (41), wherein the driving screw rod (45) is threadedly connected to the horizontal tube (42) and the vertical tube (41) and one end of the driving screw rod is connected to a power source, and the driving screw rod (45) is used to drive the pair of horizontal tubes (42) and the pair of vertical tubes (41) to move away from or towards each other.

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