A production line for three-dimensional deep relief flooring

Abstract

This application relates to the technical field of wood surface treatment, specifically a production line for surface three-dimensional deep relief flooring. The production line includes a disc sander, a wire drawing machine, and a conveyor connecting the disc sander and the wire drawing machine. The production line also includes a steam ironing machine positioned before the disc sander. The steam ironing machine includes a steam spraying and conveying mechanism, a steam spraying mechanism mounted through the steam spraying and conveying mechanism, and a protective cover. The steam spraying mechanism can provide hot, moist steam towards the conveying plane of the steam spraying and conveying mechanism. The production line includes two disc sanders: a light-duty disc sander connected after the steam ironing machine, and a heavy-duty disc sander connected after the light-duty disc sander. The light-duty disc sander and the heavy-duty disc sander are connected by a cooling conveyor section. Using the surface three-dimensional deep relief flooring production line of this application can achieve a natural three-dimensional deep relief effect.

Description

Technical Field

[0001] This application relates to the technical field of wood surface treatment, and in particular to a production line for performing three-dimensional deep relief treatment on wood surfaces. Background Technology

[0002] Brushing the surface of wood removes the fibrous material from the softer parts of the surface, typically the earlywood, opening up the pores and creating an open, three-dimensional decorative effect. When the brushing depth is significant and the brushed area is extensive (e.g., brushing to remove earlywood, the transition zone between earlywood and latewood, and a small portion of latewood), a relief-like decorative effect can be achieved. This is a common surface treatment technique for wood flooring.

[0003] Existing wire-drawing equipment achieves the purpose of wire drawing by brushing the surface of wood with steel wire rollers. For example, the wire-drawing machine disclosed in utility model patent CN201552638U, entitled "An Antique Floor Wire Drawing Machine," includes a frame, a motor, and steel brushes. Its key feature is that it further includes a wood board conveying device driven by a transmission motor mounted on the upper surface of the frame, and a set of pressure rollers perpendicular to the wood board conveying direction. The pressure rollers are mounted on the frame via a pressure roller adjusting device that is longitudinally fixed on both sides of the frame and adjusts the distance between the pressure rollers and the upper surface of the frame. A steel brush driven by a motor is positioned between adjacent pressure rollers, and the steel brush is mounted on the frame via a steel brush adjusting device that is longitudinally fixed on both sides of the frame and adjusts the distance between the steel brush and the upper surface of the frame. Specifically, the seven steel brushes, along the wood board conveying direction, have steel wire diameters of 0.6mm, 0.6mm, 0.6mm, 0.4mm, 0.4mm, 0.3mm, and 0.3mm, respectively.

[0004] In the above method, a larger diameter steel wire is used as a brush, and the pressure of the brush is increased to increase the depth and breadth of the drawing area, achieving a three-dimensional deep relief effect. However, this method suffers from an unnatural relief effect. Specifically, the earlywood region of wood is soft, with low hardness and strength, while the latewood region is hard, with higher hardness and strength. The material of the earlywood-latewood transition zone falls between the two, and depending on factors such as the climate and growing environment of that year, it may be closer to the earlywood region or closer to the latewood region. Based on this, using a steel brush with a larger diameter wire and relatively high roller pressure can remove the fibrous material from the latewood region, but it generally also completely removes a certain thickness of the surface fibrous material from the earlywood region and the earlywood-latewood transition zone, resulting in a relatively obvious boundary between the drawing of the earlywood region, the earlywood-latewood transition zone, and the latewood region. This makes the three-dimensional deep relief effect stiff and unnatural. In addition, due to the differences between different types of wood, some flooring surfaces may have a better relief effect, with some earlywood areas being over-removed and others not being properly removed. Utility Model Content

[0005] The technical objective of this application is to provide a production line for surface three-dimensional deep relief flooring. This production line overcomes the problems of existing production lines where the boundary lines between the earlywood region, the earlywood-latewood transition region, and the latewood region are clearly defined and almost seamless, resulting in a stiff and unnatural three-dimensional deep relief effect. Specifically, the following technical solution is adopted:

[0006] A production line for creating a three-dimensional deep relief floor includes a disc sander, a wire drawing machine, and a conveyor connecting the disc sander and the wire drawing machine. The production line also includes a steam ironing machine positioned before the disc sander. The steam ironing machine includes a steam spraying and conveying mechanism, a steam spraying mechanism mounted through the steam spraying and conveying mechanism, and a protective cover. The steam spraying mechanism is capable of providing hot, moist steam towards the conveying plane of the steam spraying and conveying mechanism. The production line includes two disc sanders: a light-duty disc sander connected after the steam ironing machine, and a heavy-duty disc sander connected after the light-duty disc sander. The light-duty disc sander and the heavy-duty disc sander are connected by a cooling conveyor section.

[0007] Using the above structure, firstly, the steam iron softens the wood surface under the influence of temperature and humidity, allowing the light disc sander to simultaneously remove some fiber material from the earlywood, earlywood-latewood transition zone, and latewood zone, achieving a larger area of ​​fiber removal. Furthermore, by ensuring that the strength and hardness of the three zones are relatively uniform, the fiber removal effect lacks a clear dividing line, creating a smooth transition. Secondly, the cooling conveyor section cools the wood surface, restoring its initial strength and hardness. Finally, the heavy-duty disc sander allows for fiber removal on deeper, thicker layers, increasing the depth of the relief effect and achieving a deep relief finish.

[0008] Preferably, the steam spraying mechanism includes a steam spraying plate fixedly installed by the protective cover, a steam pipeline connected to the steam spraying plate, and a heat source that supplies humid steam to the steam spraying plate through the steam pipeline. Multiple steam nozzles are provided on one surface of the steam spraying plate facing the conveying mechanism.

[0009] Preferably, the distance between the steam spraying plate and the conveying surface decreases linearly along the conveying direction of the steam spraying and conveying mechanism.

[0010] This technical solution addresses the significant swelling and shrinkage of wood due to moisture, a characteristic particularly pronounced in some types of wood. Therefore, progressively stronger steam treatment can mitigate the dimensional and shape differences that may arise between the surface layer treated with humid heat and other layers of material. These differences can lead to problems such as side cracking and tile deformation.

[0011] Preferably, the steam spraying plate is tilted with its transverse centerline as the axis, thus forming an acute angle of 15-25° with the conveying surface. This range of tilt angles effectively balances the purpose of gradually implementing the steam spraying process with the purpose of preventing excessive steam leakage and safety issues.

[0012] In addition, different types of wood require different intensities of steam treatment to soften the surface material. Therefore, preferably, the steam iron also includes an adjustment mechanism that can adjust the tilt angle of the steam plate.

[0013] Preferably, the diameter of the grinding disc in the lightweight disc grinder is 600~800mm.

[0014] Preferably, in the transverse direction, the lightweight disc grinder includes two grinding discs.

[0015] Preferably, the grinding disc of the lightweight disc grinder has straight stainless steel wire bristles with a diameter of 0.4~0.6mm.

[0016] With the above structure, by selecting the diameter of the sanding disc, the number of sanding discs, and the material and diameter of the disc bristles of the lightweight disc sander, the purpose of the first sanding and bristling treatment of most woods can be met.

[0017] Furthermore, in existing technologies, due to the poor toughness of steel wire, lightweight disc grinders that require small-diameter steel wire as disc bristles typically choose to coil the wire to prevent breakage. However, coiling the steel wire reduces the density of the disc bristles, thus increasing the gaps between them, which results in a less fine and uniform grinding and bristle-drawing effect.

[0018] In this preferred technical solution, since stainless steel wire itself has good toughness, even with a small disc brush bristle diameter, straight stainless steel wire can still be used as disc brush bristles, thereby reducing the gap between the disc brush bristles and making the polishing and wire drawing effect delicate and uniform.

[0019] Preferably, the wire drawing machine includes multiple brush rollers, the brush bristles on the surface of the brush rollers are straight stainless steel wires, and the diameter of the brush bristles is 0.1~1.5mm.

[0020] Compared to steel wire, stainless steel wire has better toughness and is less prone to breakage, while compared to DuPont wire, it has better rigidity. In other words, stainless steel wire offers a suitable balance of toughness and rigidity for wire drawing. Therefore, this structure allows for the selection of brush rollers with the desired bristle size within a range of 0.1 to 1.5 mm without altering the material of the disc brush bristles, enabling the removal of material from different areas of the wood surface. This allows operators to achieve desired relief effects by arranging and combining brush rollers with bristles of different diameters, such as precisely controlling the removal amount from earlywood, latewood, and earlywood-latewood transition zones, and creating a natural gradient transition between the removal amounts.

[0021] Furthermore, due to the good toughness of stainless steel wire, the rotation speed of the brush roller can be increased to improve the production efficiency of the wire drawing process.

[0022] Preferably, the cooling conveying section includes a roller conveyor and a blower mechanism disposed on the side of the roller conveyor. The air outlet direction of the blower mechanism is parallel to the conveying surface of the roller conveyor and forms an angle of 90° to 160° with the conveying direction of the roller conveyor. This structure of the blower mechanism can effectively avoid the problem of cracking caused by cold air blowing directly on the wood surface.

[0023] The production line that applies the surface three-dimensional deep relief flooring of this application can overcome the problems of obvious and almost no transition between the earlywood area, the earlywood transition area and the latewood area in the existing production line, as well as the problem of the resulting three-dimensional deep relief effect being stiff and unnatural, and can obtain a natural three-dimensional deep relief effect. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide further explanation of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of a production line for a surface three-dimensional deep relief floor provided in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of a steam iron provided in an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of a spray plate provided in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the installation of a steam spray plate provided in an embodiment of this application.

[0029] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is a schematic diagram of a cooling conveying section provided in an embodiment of this application.

[0031] In the above attached figures: 10, Steam ironing machine; 20, Light-duty disc polisher; 30, Cooling conveyor section; 40, Heavy-duty disc polisher; 50, Wire drawing machine; 11, Steam spraying and conveying mechanism; 12, Steam spraying mechanism; 13, Protective cover; 14, Adjusting mechanism; 121, Steam spraying plate; 122, Steam pipeline; 131, Protective cover body; 132, Baffle; 141, Gear sleeve; 142, Outer wheel sleeve; 143, Connecting rod; 144, Cylinder; 31, Roller conveyor; 32, Blowing mechanism; 51, Brush roller. Detailed Implementation

[0032] The technical solutions in this application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Example

[0034] Reference Figure 1 The production line shown includes, in sequence, a steam ironing machine 10, a light-duty disc sander 20, a cooling conveyor section 30, a heavy-duty disc sander 40, a wire drawing machine 50, and a PLC control cabinet.

[0035] Reference Figure 2 As shown, the steam iron 10 includes a steam conveying mechanism 11, a steam mechanism 12 mounted on the steam conveying mechanism 11, and a protective cover 13. The steam mechanism 12 is capable of providing hot and humid steam toward the conveying plane of the steam conveying mechanism 11.

[0036] The steam spraying conveyor 11 is a prior art device. To avoid the back of the floor being affected by steam, the steam spraying conveyor 11 is a belt conveyor, and a high-temperature resistant conveyor belt is preferably used.

[0037] The protective cover 13 is a metal enclosure screwed onto the conveyor frame of the steam conveying mechanism 11 and spans across the conveyor belt. The protective cover 13 includes a main body 131 for forming a tunnel through which the steam conveying mechanism 11 is conveyed. A baffle 132 is provided at the entrance of the main body 131, with a distance between the lower end of the baffle 132 and the conveyor belt sufficient to allow floor passage. However, for protective purposes, this distance does not exceed 30 mm.

[0038] In addition, a through hole is provided on one side of the protective cover body 131, which is used for the steam pipe 122 to extend into the protective cover 13 from the outside.

[0039] The steam spraying mechanism 12 includes a steam spraying plate 121 screwed onto the inner walls of both sides of the protective cover body 131, a steam pipe 122 connected to the steam spraying plate 121, and a heat source that supplies humid steam to the steam spraying plate through the steam pipe 122. The steam pipe 122 connects the steam spraying plate 121 and the heat source through through holes. The heat source can be an electric boiler or a steam boiler, etc.

[0040] Reference Figure 3As shown, the steam injection plate 121 is a closed hollow plate with openings only at the air inlet and the jet nozzle. The air inlet is located on the side wall facing the through hole and is connected to the steam pipe 122 via a valve or the like. Multiple steam nozzles are arranged on one surface of the conveying surface facing the steam injection conveying mechanism 11. The steam nozzles can be arranged in a circular array or a rectangular array.

[0041] In some embodiments, the steam spraying plate 121 may be horizontally arranged. In this case, the distance from each point on the steam spraying working surface (the surface on which steam nozzles are provided) of the steam spraying plate 121 to the conveying surface of the steam spraying conveying mechanism 11 is the same.

[0042] Reference Figure 4 As shown, in some other embodiments, the distance between the steaming plate 121 and the conveying surface decreases linearly along the conveying direction of the steaming conveying mechanism 11. In other words, the steaming plate 121 is tilted with its transverse centerline x as the axis, thus forming an acute angle α of 15~25° with the conveying surface. For example, it is 20°. The general rule for choosing the angle α is that hard wood is not easy to soften, but has relatively good dimensional stability, so a relatively small inclination angle can be used, such as 10~15°; hard wood is easy to soften, but has correspondingly poor dimensional stability, so a relatively large inclination angle can be used, such as 20~25°.

[0043] The included angle α can be adjusted manually or mechanically. For example, loosen the fixing bolts between the steam spray plate 121 and the protective cover body 131, tilt the steam spray plate 121 to a suitable included angle α, and then tighten the fixing bolts.

[0044] Additionally, refer to Figure 5 As shown, the steam iron 10 also includes an adjustment mechanism 14 capable of adjusting the tilt angle of the steam spray plate 121. In this design, the air inlet on one side of the steam spray plate 121 and the mounting shaft on the other side are both sealed by bearings and rotatably mounted on the two inner side walls of the protective cover body 131. The adjustment mechanism 14 includes a gear sleeve 141 sleeved on and fixedly connected to the tube body of the air inlet (e.g., screwed or keyed), an outer wheel sleeve 142 having internal teeth that mesh with the gear sleeve 141, a connecting rod 143 integrally formed on the side of the outer wheel sleeve 142, and a cylinder 144 whose output end is slidably connected to the connecting rod 143. The cylinder 144 is fixedly mounted on the conveyor frame of the steam spray conveying mechanism 11 via a cylinder seat.

[0045] The adjustment mechanism 14 can also prevent the steam spray plate 121 from deflecting unexpectedly during use, and prevent production accidents and safety accidents caused by it.

[0046] The lightweight disc grinder 20 is a prior art disc grinder, such as the disc grinder disclosed in publication number CN101704206B entitled "A Wire Drawing Machine". The difference is that the diameter of the grinding disc 21 is 600~800mm, and in the transverse direction, the lightweight disc grinder 20 includes two sets of grinding discs 21, and in the longitudinal direction, it includes four rows of grinding discs 21.

[0047] In addition, the bristles of the polishing disc 21 are made of straight stainless steel wire, and the diameter of the bristles is 0.4~0.6mm.

[0048] Reference Figure 6 As shown, the cooling conveying section 30 includes a roller conveyor 31 and blower mechanisms 32 screwed onto two sides of the roller conveyor 31. Specifically, the blower mechanism 32 includes an air outlet connected to an air compressor pipeline, neither of which is shown in the figure. Preferably, the air outlet is a rectangular flat opening, with its air outlet direction parallel to the conveying surface of the roller conveyor 31 and forming an angle β of 90° to 160° with the conveying direction of the roller conveyor 31. The height of the air outlet relative to the conveying surface of the roller conveyor 31 is between 50 and 60 cm.

[0049] The heavy-duty disc grinder 40 has the same structure as the light-duty disc grinder 20, the difference being that the diameter of the disc bristles is 1.2~1.8mm.

[0050] The wire drawing machine 50 comprises two units. The wire drawing machine 50 is based on existing technology, such as the wire drawing machine disclosed in utility model patent CN201552638U, entitled "A Wire Drawing Machine for Antique Flooring". The difference lies in that the brush bristles on the surface of the brush roller 51 of the wire drawing machine 50 are straight stainless steel wires, and the diameter of the brush bristles is 0.1~1.5mm.

[0051] For example, the first wire drawing machine 50 includes a plurality of brush rollers 51, namely seven brush rollers 51 with brush bristle diameters of 0.6mm, 0.5mm, 0.5mm, 0.4mm, 0.4mm, 0.3mm and 0.3mm respectively. The second wire drawing machine 50 includes a plurality of brush rollers 51, namely eight brush rollers 51 with brush bristle diameters of 0.2mm, 0.2mm, 1.0mm, 1.2mm, 1.0mm, 0.8mm, 0.8mm and 0.6mm respectively.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this application.

Claims

1. A production line for three-dimensional deep relief flooring, comprising a disc grinder, a wire drawing machine, and a conveyor connecting the disc grinder and the wire drawing machine, characterized in that, The production line also includes a steam ironing machine located before the disc sander. The steam ironing machine includes a steam spraying and conveying mechanism, a steam spraying mechanism installed through the steam spraying and conveying mechanism, and a protective cover. The steam spraying mechanism can provide hot and humid steam toward the conveying plane of the steam spraying and conveying mechanism. The production line includes two disc sanders. A light disc sander is connected after the steam ironing machine, and a heavy disc sander is connected after the light disc sander. The light disc sander and the heavy disc sander are connected by a cooling conveying section.

2. The production line for surface three-dimensional deep relief flooring according to claim 1, characterized in that, The steam spraying mechanism includes a steam spraying plate fixedly installed by the protective cover, a steam pipeline connected to the steam spraying plate, and a heat source that supplies humid steam to the steam spraying plate through the steam pipeline. Multiple steam nozzles are provided on one surface of the steam spraying plate facing the conveying mechanism.

3. The production line for surface three-dimensional deep relief flooring according to claim 2, characterized in that, Along the conveying direction of the steam spraying and conveying mechanism, the distance between the steam spraying plate and the conveying surface decreases linearly.

4. The production line for surface three-dimensional deep relief flooring according to claim 3, characterized in that, The steam spray plate is tilted with its transverse centerline as the axis, so that it has an acute angle of 15~25° with the conveying surface.

5. The production line for surface three-dimensional deep relief flooring according to claim 3, characterized in that, The steam iron also includes an adjustment mechanism that can adjust the height and tilt angle of the steaming plate.

6. The production line for surface three-dimensional deep relief flooring according to claim 1, characterized in that, The diameter of the grinding disc in the lightweight disc grinder is 600~800mm.

7. The production line for surface three-dimensional deep relief flooring according to claim 6, characterized in that, In the transverse direction, the lightweight disc grinder includes two grinding discs.

8. The production line for surface three-dimensional deep relief flooring according to claim 1, characterized in that, The grinding disc of the lightweight disc grinder has straight stainless steel wire bristles with a diameter of 0.4~0.6mm.

9. The production line for surface three-dimensional deep relief flooring according to claim 1, characterized in that, The wire drawing machine includes multiple brush rollers, the brush bristles on the surface of the brush rollers are straight stainless steel wires, and the diameter of the brush bristles is 0.1~1.5mm.

10. The production line for surface three-dimensional deep relief flooring according to claim 1, characterized in that, The cooling conveying section includes a roller conveyor and a blower mechanism disposed on the side of the roller conveyor. The air outlet direction of the blower mechanism is parallel to the conveying surface of the roller conveyor and has an angle of 90 to 160° with the conveying direction of the roller conveyor.

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