Heating box for thin and straight grain embossing of ASA floor and thin and straight grain embossing method

Abstract

The invention discloses a heating box for thin and straight grain embossing of an ASA floor and a thin and straight grain embossing method, and relates to the technical field of floor processing. A heating channel is arranged in the heating box, a plurality of heating pipes are arranged in the heating channel, and the heating pipes are connected in parallel and arranged at equal intervals; the device further comprises a control module, and the control module controls the heating pipes to operate independently. According to the heating box for thin and straight grain embossing of the ASA floor and the thin and straight grain embossing method, the ASA floor is heated at the front end of the thin and straight grain embossing roller, so that the temperature of the ASA floor is 190 DEG C or above when the ASA floor reaches the position below the thin and straight grain embossing roller, the viscosity of the ASA floor is reduced, and therefore the thin and straight grain embossing quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of floor processing, in particular to a heating box for fine straight-line embossing and a fine straight-line embossing method. Background Art

[0002] Floor embossing is a technique that mechanically imprints wood grain patterns or other designs onto the floor surface, enhancing both aesthetics and practical performance. Because fine graining is dense, clean, and three-dimensional with depth, the embossing rollers used for this process must also possess a specific surface texture to ensure they meet the operational requirements for fine grain embossing.

[0003] However, when fine straight-grain embossing is performed on co-extruded flooring made of ASA material, since the floor temperature cannot be directly controlled during processing, the fine straight-grain embossing roller surface texture density is often too high, causing it to stick to the ASA floor surface when it contacts it, seriously affecting the embossing quality.

[0004] Moreover, since the coating will affect the texture clarity and three-dimensional layering, in order to ensure the fine straight line embossing effect, it is not convenient for technicians to spray anti-stick coating on the fine straight line embossing roller. Summary of the Invention

[0005] In order to solve the above-mentioned defects of the prior art, the present invention provides a heating box and a fine-grain embossing method for ASA flooring. By heating the ASA flooring at the front end of the fine-grain embossing roller, the temperature of the ASA flooring is above 190°C when it reaches the bottom of the fine-grain embossing roller, thereby reducing the viscosity of the ASA flooring and ensuring the quality of the fine-grain embossing.

[0006] The technical solution of the present invention to solve the above problems is: to provide a heating box for fine straight grain embossing of ASA flooring, wherein a heating channel is provided in the heating box, and a plurality of heating tubes are provided in the heating channel, and the plurality of heating tubes are arranged in parallel and equidistantly; and further comprising a control module, wherein the control module controls each of the heating tubes to operate independently.

[0007] Furthermore, the operation of the heating tube includes a power-on heating period and a power-off cooling period, and the duration of the power-on heating period is greater than the duration of the power-off cooling period.

[0008] Furthermore, the spacing between adjacent heating tubes is 6-10 cm.

[0009] Furthermore, electrically controlled guide rollers are installed at the channel entrance and the channel exit of the heating channel, a heat-resistant support guide roller is provided in the heating channel, and the control module also synchronously controls the rotation speed of the plurality of electrically controlled guide rollers. Furthermore, it also includes an adjustable light shielding plate, which is symmetrically arranged on both sides of the heating tube and rotatably arranged on the inner wall of the heating channel.

[0010] Furthermore, the adjustable light shielding sheet is a stainless steel sheet lined with asbestos.

[0011] Furthermore, a heat insulating layer is provided between the wall of the heating box and the heating channel.

[0012] Furthermore, adjustable high-temperature resistant baffles are provided at the inlet and outlet of the heating channel, and the adjustable high-temperature resistant baffles are rotatably arranged on the heating box.

[0013] Furthermore, the heating box includes a first box body and a second box body spliced ​​together, and the first box body and the second box body are connected to each other at their edges through a hinge structure, so that the first box body can be rotated open relative to the second box body around the hinge position to facilitate maintenance of the interior of the box, or rotated and spliced ​​to form a complete box.

[0014] The present invention also provides a fine straight line embossing method, comprising the heating box described in any of the above paragraphs and a fine straight line embossing device, wherein the heating box is arranged at the front end of the embossing roller of the fine straight line embossing device; and further comprising the following steps: S1. Send the ASA floor into the heating box for heating; During heating, the heating tubes are numbered according to the arrangement order, and one or more of the odd-numbered heating tubes or one or more of the even-numbered heating tubes are controlled to operate to heat the ASA floor; S2. Send the heated ASA floor to the fine straight grain embossing equipment for fine straight grain embossing operation; According to the size of the ASA floor, the floor moving speed is controlled to ensure that the heated floor reaches the temperature standard when it reaches the bottom of the embossing roller.

[0015] Furthermore, when the ASA floor reaches below the embossing roller, the temperature is greater than or equal to 190°C.

[0016] Beneficial effects of the present invention: 1. Since the ASA floor material itself will oxidize, turn yellow, and decompose when the temperature exceeds 230°C, the present invention controls multiple heating tubes to heat the ASA floor in a pulsed heating method with heating for a period of time and cooling for a period of time. Under the premise of being able to heat the ASA floor to above 190°C (to ensure that the embossing roller does not stick to the roller during embossing), it prevents the ASA from overheating and degradation, and ensures its surface gloss.

[0017] 2. When fine straight grain embossing is performed on the ASA floor, the fine straight grain only needs to remain on the surface of the floor; therefore, when the pulse heating method is actually used to heat the ASA floor, the present application does not need to allow the residual heat to completely penetrate the floor, thereby making the overall temperature of the floor uniform; therefore, the present application does not need to deliberately control the time ratio of the heating period of the heating tube to the power-off cooling period to 1:1.5~2. Instead, the power-on heating period can be made longer than the power-off cooling period while ensuring that the ASA floor is not heated to above 230°C, so as to maximize the heating speed of the ASA floor and reduce the heating cost.

[0018] At the same time, by increasing the heating speed of the ASA floor, it can also shorten the number of repeated expansion and contraction of the floor, avoiding microcracks in the floor due to repeated expansion and contraction; in addition, within a pulse heating cycle, shortening the power-off cooling time and extending the power-on heating time can also narrow the temperature variation range of the floor (the maximum temperature of the floor does not exceed 230°C, and the shorter cooling time will cause its minimum temperature to be higher than usual), thereby reducing the possibility of stratification of the floor.

[0019] 3. The control module can control the operation of one or more heating tubes with odd or even numbers according to the actual size of the ASA floor, so as to reduce energy consumption and avoid overheating.

[0020] At the same time, when the heating pipe is working, there is a non-operating heating pipe between the adjacent heating pipes in working state, so that no matter in the power-on heating period or the power-off cooling period, the heat of the floor surface area heated by the working heating pipes on the ASA floor will be transferred to the floor surface area corresponding to the non-working heating pipes, instead of all the heat being transferred to the inside of the floor, so that the heating box of this application can be fully adapted to heating the ASA floor, so as to further reduce heating energy consumption and avoid overheating of the ASA floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In the drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. It is clear that those skilled in the art can derive other drawings from these drawings without inventive effort.

[0022] Figure 1 It is a front view structural schematic diagram of a heating box according to a specific embodiment of the present invention; Figure 2 The side view of the heating box of the specific embodiment of the present invention is shown in FIG. Figure 2 A fine straight embossing device is additionally drawn on the right side of the heating box. To facilitate understanding by those skilled in the art, only the embossing roller portion of the fine straight embossing device is shown; Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure AA.

[0023] Related annotations in the figure: 11-heating box, 12-heating channel, 13-heating tube, 14-control module, 15-electrically controlled guide roller, 16-adjustable light shield, 17-insulation layer, 18-adjustable high temperature resistant baffle; 21-Embossing roller, 31-ASA floor. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like that may appear to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Reference below Figure 1-Figure 3 A heating box according to an embodiment of the present invention is described.

[0028] like Figure 2 As shown in the figure, a heating box for fine straight-grain embossing of ASA flooring according to the present invention is a rectangular parallelepiped box comprising a first box body and a second box body. The cross-sections of the first box body and the second box body are both U-shaped. The first box body and the second box body are butt-jointed up and down to form the heating box 11 with a complete heating channel 12. To this end, technicians can push the ASA flooring to be embossed horizontally from left to right into the heating channel 12 for heating. After the ASA flooring, heated to a temperature between 200°C and 230°C, extends from the right end of the heating box 11, it is immediately fed under the embossing roller of the fine straight-grain embossing equipment for fine straight-grain embossing, and the ASA material will not stick to the roller.

[0029] See also Figure 1In some embodiments of the present invention, the first box body and the second box body are rotatably connected to each other by a hinge structure on the outer side of their right ends, so that the first box body can rotate around the hinge structure relative to the second box body, thereby opening the top of the heating channel 12, so as to facilitate technicians to maintain the heating box 11, and adjust the angle position of the adjustable light baffle before heating, so as to further refine the heating effect of each heating tube 13 according to the specific size and model of the ASA floor.

[0030] In addition, the first box body can naturally rotate around the hinge structure to be connected with the second box body to form a complete heating box 11 for heating the ASA floor.

[0031] Further, see Figure 3 In some embodiments of the present invention, the heating channel 12 in the heating box 11 is also set as a rectangular channel, and a plurality of heating tubes 13 are provided on the inner wall of the heating channel 12. The plurality of heating tubes 13 are arranged equidistantly from left to right, and the plurality of heating tubes 13 are connected in parallel to each other to access the circuit, so that the heating power of each heating tube 13 is consistent when it is in operation, thereby ensuring a uniform heating effect.

[0032] However, in other embodiments, Figure 1 Taking the direction shown as an example, multiple heating tubes 13 can also be arranged on the inner wall of the heating channel 12 in an equidistant arrangement in a clockwise or counterclockwise direction.

[0033] Further, see Figure 1 or Figure 2 or Figure 3 In some embodiments of the present invention, multiple heating tubes 13 are electrically connected to the control module 14, and multiple independent channels of the control module 14 are each connected to the parallel branch circuit of a heating tube 13 to be connected in series with the heating tube 13, so that the control module 14 can control the multiple heating tubes 13 to operate independently.

[0034] In this regard, when facing ASA floors of different models and sizes, technicians can control the number of running heating pipes 13 to ensure the heating effect of the heating box 11 and avoid overheating.

[0035] It should be noted here that in some embodiments of the present invention, the length of the heating box 11 is 100 cm, the width is 60 cm, and the height is 20 cm; the length of the heating channel 12 is 100 cm, the width is 50 cm, and the height is 12 cm; the width dimensions of the ASA floor have different specifications such as 40 cm and 35 cm. Because the width dimensions of the ASA floors heated in different batches are usually different, technicians are required to adjust the overall heating power of the heating box 11, that is, the number of running heating tubes 13, before each batch of floors is heated to ensure its heating quality.

[0036] In addition, in some embodiments of the present invention, the control module 14 uses the Hongrun NHR-PR20 programmable logic controller, which supports multi-way relays to control multiple heating tubes 13, and can also be connected to the frequency converter via RS485, and ladder diagram programming is used to implement multi-speed control logic, and the cost is relatively low.

[0037] Furthermore, in order to further prevent overheating and appropriately reduce energy consumption, in some embodiments of the present invention, based on the pulse heating principle, the operation of the heating tube 13 of the present application includes a power-on heating period and a power-off cooling period, that is, after the heating tube 13 is powered on to heat the ASA floor for a period of time, the power is turned off to wait for the ASA to cool naturally for a period of time, and then the power is turned on again to heat the ASA floor for a period of time, thus forming a cycle.

[0038] Furthermore, in some embodiments of the present invention, when fine straight grain embossing is performed on the ASA floor, the fine straight grain only needs to remain on the floor surface. Therefore, when actually heating the ASA floor using pulse heating, it is not necessary to allow the residual heat to fully penetrate the floor to achieve a uniform temperature across the entire floor. This application only requires heating the ASA material within a relatively small thickness region from the surface of the ASA floor to its inner layer to a predetermined temperature. Therefore, this application does not require specifically controlling the ratio of the heating period of the heating tube 13 to the cooling period of the power-off period to a ratio of 1:1.5-2. Instead, the heating period can be extended to a greater extent than the cooling period of the power-off period, while ensuring that the ASA floor is not heated above 230°C, thereby maximizing the heating speed of the ASA floor and reducing heating costs.

[0039] Furthermore, in some embodiments of the present invention, the heating tube 13 is a quartz heating tube 13, the heating power of a single heating tube 13 is between 1000 and 4000 W, the total number of heating tubes 13 is between 6 and 10, and the spacing between adjacent heating tubes 13 is 6 to 10 cm; wherein, the heating power of a single heating tube 13 is inversely correlated with the total number of heating tubes 13, and the spacing between adjacent heating tubes 13 is also inversely correlated with the total number of heating tubes 13, that is, the greater the total number of heating tubes 13, the smaller the heating power of a single heating tube 13, and the smaller the spacing between adjacent heating tubes 13.

[0040] Further, see Figure 1 and Figure 3 In order to control the speed at which the ASA floor enters and leaves the heating box 11, a balance is maintained between ensuring that the ASA floor can be heated to above 190°C and ensuring that the temperature of the heated ASA floor is still above 190°C when it reaches the embossing roller; Figure 3Taking the shown orientation as an example, in some embodiments of the present invention, electrically controlled guide rollers 15 are installed at the channel entrance and channel exit of the heating channel 12, and heat-resistant support guide rollers are provided in the heating channel 12. The control module 14 synchronously controls the rotation speed of multiple electrically controlled guide rollers 15; the heat-resistant support guide rollers are freely rotatably arranged in the heating channel 12. The heat-resistant support guide rollers can be driven by the ASA floor to rotate, so as to support the ASA floor and prevent the ASA from deforming and bending after heating.

[0041] For this, see Figure 3 In some embodiments of the present invention, the control module 14 is selected as the Hongrun NHR-PR20 programmable logic controller, 7 heating tubes 13 are provided, and two electrically controlled guide rollers 15 are connected in parallel. The control module 14 is provided with multiple speed control gears and multiple heating gears corresponding to several existing models of ASA flooring that contain both width and thickness dimension information. The technicians can select the appropriate speed control gear + heating gear combination according to the model of the flooring to achieve precise heating, ensure heating quality, and prevent overheating and decomposition of the ASA flooring.

[0042] Further, in some embodiments of the present invention, please refer to Figure 3 ,by Figure 3 Taking the orientation shown as an example, due to the gear setting method, the heating power outside the gear cannot be achieved by the control module 14 alone. Therefore, each heating tube 13 is also provided with an adjustable light blocking plate 16 on the left and right sides, and the adjustable block plate is also rotatably connected to the top inner wall of the heating channel 12 through a hinge structure.

[0043] To this end, the technician can adjust the actual heating power of the heating tube 13 by turning the adjustable light shield 16 to further improve the accuracy of the heating control of the heating box 11.

[0044] Furthermore, in some embodiments of the present invention, the adjustable light shielding sheet 16 is a stainless steel sheet lined with asbestos.

[0045] Furthermore, in some embodiments of the present invention, since the heating tube 13 has a high power when working, in order to avoid the box wall temperature of the heating box 11 being too high due to the excessive power of the heating tube 13, thereby injuring the user, an insulating layer 17 made of asbestos is also provided between the heating tube and the heating box 11.

[0046] Furthermore, in some embodiments of the present invention, an adjustable high-temperature resistant baffle 18 is provided at the inlet and outlet of the heating channel 12. The adjustable high-temperature resistant baffle 18 is rotatably arranged on the heating box 11. The upper edge of the adjustable high-temperature resistant baffle 18 is rotatably connected to the upper edge of the heating box 11 through a hinge structure. The adjustable high-temperature resistant baffle 18 can be swung downward to properly close the inlet and outlet of the heating channel 12 to reduce heat loss and increase the heating speed. The adjustable high-temperature resistant baffle 18 can be swung upward to completely expose the inlet and opening of the heating channel 12, so that technicians can observe the actual heating conditions.

[0047] In this embodiment, the adjustable high temperature resistant baffle 18 is also made of stainless steel lined with asbestos sheets.

[0048] Some embodiments of the present invention further provide a fine straight line embossing method, comprising the heating box 11 described in any of the above paragraphs, and a fine straight line embossing device, wherein the heating box 11 is disposed at the front end of an embossing roller of the fine straight line embossing device; and further comprising the following steps: S1, send the ASA floor into the heating box 11 for heating; During heating, the heating tubes 13 are numbered according to the arrangement sequence, and one or more of the odd-numbered heating tubes 13 or one or more of the even-numbered heating tubes 13 are controlled to operate to heat the ASA floor.

[0049] Specifically, refer to Figure 3 The seven heating tubes 13 are marked with numbers 1 to 7 from left to right. When the ASA floor needs to be heated, the control module 14 can control one or two heating tubes 13 numbered 2 or 4, or control one or more heating tubes 13 numbered 1, 3, 5, and 7 to operate synchronously to adapt to ASA floors of different models and sizes.

[0050] It should be emphasized here that when one or two of the heating tubes 13 with numbers 2 and 4 are in operation, the heating tubes 13 with numbers 4 are not allowed to operate, and vice versa.

[0051] In this way, there can be a non-operating heating tube 13 between adjacent heating tubes 13 that are in operation, so that no matter in the power-on heating period or the power-off cooling period, the heat of the floor surface area heated by the working heating tubes 13 on the ASA floor will be transferred to the floor surface area corresponding to the non-operating heating tubes 13, instead of all the heat being transferred to the inside of the floor, so that the heating box 11 of the present application can be fully adapted to heating the ASA floor, so as to further reduce heating energy consumption and avoid overheating of the ASA floor.

[0052] S2. Send the heated ASA floor to the fine straight grain embossing equipment for fine straight grain embossing operation; According to the size of the ASA floor, the floor moving speed is controlled to ensure that the heated floor reaches the temperature standard when it reaches the bottom of the embossing roller.

[0053] Specifically, see Figure 3 In some embodiments of the present invention, the rotational speed of the electrically controlled guide roller 15 is determined by a technician or the control module 14 based on the heating power information of the heating box 11 and the size information of the floor to be heated. The specific determination method is: it can be determined based on experimental data obtained from multiple cycle tests.

[0054] Any matters not mentioned above are applicable to the prior art.

[0055] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heating box for fine straight grain embossing of ASA floor, characterized by: The heating box (11) is provided with a heating channel (12), and a plurality of heating tubes (13) are provided in the heating channel (12). The plurality of heating tubes (13) are arranged in parallel and at equal distances. The heating box (11) further includes a control module (14), and the control module (14) controls each of the heating tubes (13) to operate independently.

2. The heating box according to claim 1, characterized in that The operation of the heating tube (13) includes a power-on heating period and a power-off cooling period, and the duration of the power-on heating period is greater than the duration of the power-off cooling period.

3. The heating box according to claim 1, characterized in that The distance between adjacent heating tubes (13) is 8 cm.

4. The heating box according to claim 1, characterized in that Electric-controlled guide rollers (15) are installed at the channel entrance and the channel exit of the heating channel (12). Heat-resistant support guide rollers are provided in the heating channel (12). The control module (14) also synchronously controls the rotation speeds of the plurality of electric-controlled guide rollers (15).

5. The heating box according to claim 1, characterized in that It also includes an adjustable light shielding plate (16), which is symmetrically arranged on both sides of the heating tube (13), and the adjustable light shielding plate (16) is rotatably arranged on the inner wall of the heating channel (12).

6. The heating box according to claim 5, characterized in that The adjustable light blocking sheet (16) is a stainless steel sheet lined with asbestos.

7. The heating box according to claim 1, characterized in that A heat insulating layer (17) is also provided between the wall of the heating box (11) and the heating channel.

8. The heating box according to claim 1, wherein: Adjustable high-temperature resistant baffles (18) are provided at the inlet and outlet of the heating channel (12), and the adjustable high-temperature resistant baffles (18) are rotatably arranged on the heating box (11).

9. A fine straight line embossing method, characterized in that: The method comprises the heating box according to any one of claims 1 to 8, and a fine straight line embossing device, wherein the heating box (11) is arranged at the front end of the embossing roller of the fine straight line embossing device; and further comprises the following steps: S1, sending the ASA floor into the heating box (11) for heating; During heating, the heating tubes (13) are numbered according to the arrangement order, and one or more of the odd-numbered heating tubes (13) or one or more of the even-numbered heating tubes (13) are controlled to operate to heat the ASA floor; S2. Send the heated ASA floor to the fine straight grain embossing equipment for fine straight grain embossing operation; According to the size of the ASA floor, the floor moving speed is controlled to ensure that the heated floor reaches the temperature standard when it reaches the bottom of the embossing roller.

10. The embossing method according to claim 9, wherein When the ASA floor reaches below the embossing roller, the temperature is greater than or equal to 190°C.

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