Drying process for floor cleaning

Abstract

The present invention discloses a drying process for floor cleaning, which includes the steps of drying first and air-drying afterwards. First, a feeding robot transfers a substrate from a feeding trough to a drying trough, and the substrate is converted from a vertical state to a horizontal state. Then, a discharging robot clamps the substrate in the drying trough and detaches from the feeding robot. Then, the discharging robot transfers the substrate from the drying trough to the discharging trough, and the substrate is converted from a vertical state to a horizontal state. Secondly, the discharging robot translates the flipped substrate into a bellows, and then the upward and downward convection wind air-dries the surface of the moving substrate to form a solidified resin layer. On the one hand, the present invention completes the drying of the solvent layer on the surface of the substrate and the upward and downward convection drying to form the required resin solidified layer under the premise that the substrate can be rotated 180°. On the other hand, the resin solidified layer is formed, and in the subsequent gluing process, not only can the amount of glue applied be reduced, but it is also more conducive to the gluing of the epidermis and the co-extruded board, thereby improving the peeling resistance.

Description

[0001] This application is a divisional application of the application date of July 31, 2018, application number 201810859174.1, and name of drying unit for cleaning floor molding. Technical Field

[0002] The invention belongs to the field of floor production equipment, and in particular relates to a drying process for floor cleaning. Background Art

[0003] In recent years, interior decoration has widely adopted solid wood flooring, solid wood composite flooring, etc. as floor decoration materials. However, solid wood flooring has the problem of shortage of high-quality wood and low wood utilization rate. Some laminate flooring and composite flooring have appeared on the market to meet consumer demand. However, during use, the glue used in the composite will emit many harmful substances (such as formaldehyde), which seriously affects people's health. Therefore, a new type of environmentally friendly wood-plastic composite material product has gradually emerged. The wood phenol produced in the production process of medium and high-density fiberboard is added to recycled plastic and granulated into a wood-plastic composite material. The composite material is then extruded to form a co-extruded board. Then, the surface of the co-extruded board is laminated (patterned decorative layer) to complete the processing of composite flooring.

[0004] However, in actual use, the surface layer (that is, the patterned decorative layer) of the co-extruded board is not firmly bonded to the co-extruded board, which is more likely to cause peeling or warping, making the quality of the floor unable to be recognized by consumers. Therefore, it is difficult to open up the sales market for this type of floor.

[0005] Then, in order to overcome the problem of weak bonding, the applicant found that it is very important to clean the bonding surface during gluing. The ordinary cleaning method only removes the debris on the bonding surface to ensure the uniformity of the glue coating, thereby improving the bonding strength. However, the peel strength of the product produced is still difficult to meet the use requirements. Therefore, the present application improves the cleaning process and adopts a colorless and volatile liquid and resin mixed in proportion to form a cleaning liquid. It not only cleans the bonding surface and removes impurities, but also forms a resin solidified layer on the bonding surface. Therefore, in the subsequent gluing process, it can not only reduce the amount of glue applied, but also be more conducive to the gluing of the skin layer and the co-extruded board, thereby greatly improving the peel resistance of the skin layer. Therefore, how to form the resin solidified layer, especially in the process of roller brushing the bottom surface of the substrate to clean the solvent, is particularly important. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved drying process for floor cleaning.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: a drying process for floor cleaning, which includes a drying step and an air-drying step. The drying section used in the drying step includes an oven and a heating roller arranged in the oven and heating the substrate; the air-drying section used in the air-drying step includes a bellows and an airflow component that forms convection in the bellows. The oven includes a drying trough extending in a vertical direction, a feed trough and a discharge trough extending horizontally on opposite sides of the drying trough, and the feed robot and the discharge robot are used to clamp and transfer the materials. The process includes a drying step first. and a subsequent air-drying step, wherein the drying step comprises: a feeding robot transfers the substrate from the feeding trough to the drying trough, at which time the substrate is converted from a horizontal state to a vertical state, and then the discharging robot clamps the substrate in the drying trough and separates from the feeding robot, and then the discharging robot transfers the substrate from the drying trough to the discharging trough, at this time, the substrate is converted from a vertical state to a horizontal state, and a 180° flip of the substrate is completed; the air-drying step comprises: the discharging robot translates the flipped substrate into the bellows, and then the surface of the moving substrate is dried by the up and down convection wind to form a solidified resin layer.

[0008] According to one specific embodiment and preferred aspect of the present invention, a feed track is formed between the feed trough and the drying trough, along which a feed robot reciprocates between the two troughs. A discharge track is also formed between the discharge trough and the drying trough, along which a discharge robot reciprocates between the two troughs. The roller brush of the substrate is first rotated from a horizontal downward position to a vertical rightward position, and then from the vertical rightward position to a horizontal upward position, thereby achieving a 180° flip of the roller brush surface, greatly facilitating subsequent substrate stacking or continuous lamination processing.

[0009] In some embodiments, the feed track and the discharge track are symmetrically arranged and include a horizontal section arranged horizontally, a vertical section arranged vertically within the drying tank, and a curved section for connecting the horizontal section and the vertical section. This structural design facilitates the transfer of substrates in both horizontal and vertical directions.

[0010] According to another specific embodiment and preferred aspect of the present invention, a transverse limiting port is provided at the end of the horizontal section away from the curved section, and a longitudinal limiting port is provided at the lower end of the vertical section. The feeding robot and the discharging robot are respectively moved on the corresponding feeding channel and discharging track by a feeding trolley and a discharging trolley. The feeding trolley and the discharging trolley respectively move between the transverse limiting port and the longitudinal limiting port, and the corresponding substrate switches between horizontal and vertical positions. This further facilitates position control of the transfer to achieve the required switching requirements.

[0011] In some embodiments, heating rollers are positioned between the drying trough sidewalls and the feed and discharge tracks, extending along the width of the feed and discharge tracks. This provides a relatively even heating zone. Foil is also positioned between the heating rollers and the drying trough sidewalls to facilitate heat concentration, thereby improving drying efficiency while reducing energy consumption. Furthermore, foil is also positioned at the bottom of the drying trough, with heating rollers positioned above the foil. The bottom heating rollers and the side heating rollers are positioned parallel to each other.

[0012] In addition, the airflow component includes an inlet fan and an exhaust fan respectively arranged on opposite sides of the wind box, and under the setting of the inlet fan and the exhaust fan, the substrate passing through the wind box can quickly dissipate heat in the convective airflow so that the cleaning solvent on the surface of the substrate forms a solidified resin layer.

[0013] In some specific embodiments, the discharging robot and the feeding robot are adsorbed on opposite sides of the substrate by negative pressure, and the substrate can be transferred laterally between the discharging robot and the feeding robot in the drying tank. The chuck of the feeding robot clamps the opposite sides of the substrate, and the chuck is connected to the feeding trolley through a telescopic support arm. Furthermore, the chuck includes a slide arranged on the feeding trolley and moving toward each other along the width direction of the feeding track, and a telescopic clamping arm arranged on the slide and having a notch matching the side of the substrate. Preferably, the discharging robot is adsorbed on the opposite side of the substrate where the cleaning liquid is formed by a negative pressure adsorption head, and the negative pressure adsorption head is connected to the discharging trolley through a telescopic support arm.

[0014] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] In existing floor molding, due to the problem of loose adhesion between the surface layer (that is, the patterned decorative layer) and the co-extruded board, it is more likely to cause peeling or warping, making the floor quality unacceptable to consumers. The present invention cleverly solves the various shortcomings of existing floor molding through the overall design of the floor cleaning and drying process. After adopting this drying treatment process, the feeding robot transfers the substrate from the feeding trough to the drying trough. At this time, the substrate is transformed from a horizontal state to a vertical state. Then, the discharging robot clamps the substrate in the drying trough and separates from the feeding robot. Then, the discharging robot transfers the substrate from the drying trough to the discharging trough. At this time, the substrate is transformed from a vertical state to a horizontal state, and the 180° flip of the substrate is completed; then the discharging robot translates the flanged substrate into the bellows, and the surface layer of the substrate coated with the cleaning liquid is dried by the up and down convection wind to form a solidified resin layer. Therefore, compared with the prior art, the present invention, on the one hand, completes the drying of the solvent layer on the surface of the substrate and the up and down convection drying to form the required resin solidification layer under the premise that the substrate can be rotated 180°; on the other hand, it is formed by the resin solidification layer, which can not only reduce the amount of glue applied in the subsequent gluing process, but also is more conducive to the gluing of the skin layer and the co-extruded board, thereby greatly improving the peeling resistance of the skin layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main view of the drying unit of the present invention (when the feeding robot moves horizontally to the discharging robot to feed the material);

[0017] Figure 2 This is a schematic diagram of the main view of the drying unit of the present invention (when the discharging robot adsorbs the substrate);

[0018] Wherein: D, drying unit; D1, drying section; D10, drying oven; D100, drying trough; D101, feed trough; D102, discharge trough; D11, heating roller; D2, air drying section; D20, bellows; D21, air flow assembly; D210, inlet fan; D211, outlet fan; D3, feed track; D30, horizontal section; D31, vertical section; D32, curved section; D33, lateral restriction port;

[0019] D34, longitudinal restriction port; D4, discharge track; D5, feed trolley; D6, discharge trolley; D7, feed robot; D70, chuck; D700, slide; D701, clamping arm; D8, discharge robot; D80, negative pressure adsorption head; D9, foil; b, substrate. DETAILED DESCRIPTION

[0020] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0021] In the description of the present application, 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 indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0023] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0024] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0026] like Figure 1 and Figure 2 As shown, the drying process for floor cleaning in this embodiment adopts a drying unit D including a drying section D1 and an air-drying section D2, wherein the drying section D1 includes an oven D10 and a heating roller D11 arranged in the oven D10 and heating the substrate b; the air-drying section D2 includes a bellows D20 and an airflow component D21 that forms convection in the bellows D20.

[0027] The drying oven D10 includes a drying trough D100 extending in a vertical direction, a feed trough D101 and a discharge trough D102 extending horizontally on opposite sides of the drying trough D100, and the drying unit D also includes a feed track D3 for connecting the feed trough D101 with the drying trough D100, a discharge track D4 for connecting the discharge trough D102 with the drying trough D100, a feed trolley D5 and a discharge trolley D6 sliding back and forth on the feed track D3 and the discharge track D4 respectively, and a feed robot D7 and a discharge robot D8 respectively arranged on the feed trolley D5 and the discharge trolley D6, wherein when the feed robot D7 moves to the drying trough D100, it can push the clamped substrate to the discharge robot D8, and after the discharge robot D8 clamps the substrate, it moves to the discharge trough D102 and transfers the substrate horizontally to the bellows D20.

[0028] The feed track D3 and the discharge track D4 are symmetrically arranged and comprise a horizontal section D30, a vertical section D31 disposed vertically within the drying tank D100, and an arcuate section D32 for connecting the horizontal section D30 with the vertical section D31. This track arrangement enables the substrates to switch between horizontal and vertical positions. In this application, the symmetrical arrangement of the feed and discharge tracks allows the roller brush surface of the substrate to first shift from a horizontally downward position to a vertically rightward position, and then from a vertically rightward position to a horizontally upward position, achieving a 180° flip of the roller brush surface, greatly facilitating subsequent substrate stacking or continuous lamination processing.

[0029] Specifically, a transverse restriction port D33 is provided at the end of the horizontal section D30 away from the arc section D32, and a longitudinal restriction port D34 is provided at the lower end of the vertical section D31. When the feeding trolley D5 moves to the position of the transverse restriction port D33, the feeding robot D7 clamps the substrate and moves along the feeding track D3 into the drying tank D100 until it moves to the position of the longitudinal restriction port D34, and the substrate is transformed from a horizontal state to a vertical state; then the discharging robot D7 clamps the substrate and moves along the discharging track D4 into the discharging trough D102 until it moves to the position of the transverse restriction port D33 in the discharging trough D102, and the substrate is transformed from a vertical state to a horizontal state; the 180° flip of the substrate is completed so that the surface of the substrate coated with the cleaning liquid is translated upward into the bellows.

[0030] In this example, the chuck D70 of the feeding robot D7 clamps the substrate on two opposite sides, and the chuck D70 is connected to the feeding trolley D5 through a telescopic arm.

[0031] Specifically, the clamping head D70 includes a slide D700 provided on the feeding trolley D5 and moving toward each other along the width direction of the feeding track D3, and a telescopic clamping arm D701 provided on the slide D700 and having a notch matching the side edge of the substrate.

[0032] The discharging robot D8 is adsorbed on the opposite side of the substrate where the cleaning liquid is formed through the negative pressure adsorption head D80, and the negative pressure adsorption head D80 is connected to the discharging trolley D6 through a telescopic support arm.

[0033] The heating roller D11 is distributed between the side wall of the drying tank D100 and the feed guide rail D3 and the discharge track D4, and is extended along the width direction of the feed guide rail D3 and the discharge track D4.

[0034] In this example, a foil D9 is provided between the heating roller D11 and the side wall of the drying tank D100 to facilitate the convergence of heat energy, thereby improving the drying effect while reducing energy consumption.

[0035] Furthermore, a foil D9 is provided at the bottom of the drying tank D100, and a heating roller D11 is provided above the foil D9, wherein the heating roller D11 at the bottom and the heating roller D11 at the side are arranged parallel to each other.

[0036] In addition, the airflow assembly D21 includes an inlet fan D210 and an exhaust fan D211, which are respectively arranged on opposite sides of the air box D20. With the arrangement of the inlet fan D210 and the exhaust fan D211, the substrate passing through the air box D20 can quickly dissipate heat in the convective airflow, which is more conducive to forming a cured resin layer.

[0037] In summary, the implementation process of this implementation is as follows:

[0038] The feeding robot transfers the substrate from the feeding trough to the drying trough. At this time, the substrate is transformed from a vertical state to a horizontal state. Then, the discharging robot clamps the substrate in the drying trough and separates it from the feeding robot. Then, the discharging robot transfers the substrate from the drying trough to the discharging trough. At this time, the substrate is transformed from a vertical state to a horizontal state and completes a 180° flip of the substrate. The air-drying step includes: the discharging robot translates the flipped substrate into the wind box, and then the upward and downward convection wind dries the surface of the moving substrate to form a solidified resin layer.

[0039] As can be seen from the above, after adopting the drying treatment process, the feeding robot transfers the substrate from the feeding trough to the drying trough. At this time, the substrate is transformed from a horizontal state to a vertical state. Then, the discharging robot clamps the substrate in the drying trough and separates from the feeding robot. Then, the discharging robot transfers the substrate from the drying trough to the discharging trough. At this time, the substrate is transformed from a vertical state to a horizontal state, and the 180° flip of the substrate is completed; then the discharging robot translates the flanged substrate into the bellows, and the surface layer of the substrate coated with the cleaning liquid is dried by the up and down convection wind to form a solidified resin layer. Therefore, compared with the prior art, the present invention, on the one hand, completes the drying of the solvent layer on the surface of the substrate and the up and down convection drying, thereby forming the required resin solidification, under the premise that the substrate can be rotated 180°. layer; on the other hand, it is formed by a resin solidified layer, which can not only reduce the amount of glue applied in the subsequent gluing process, but also is more conducive to the gluing of the skin layer and the co-extruded board, thereby greatly improving the peeling resistance of the skin layer; on the third aspect, the track setting can drive the substrate to switch between horizontal and vertical states, and in this application, the feed track and the discharge track are symmetrically arranged, and the roller brush surface of the substrate is first converted horizontally downward to vertically to the right, and then the vertical right is converted to horizontally upward, so as to realize a 180° flip of the roller brush surface of the substrate, which is very convenient for subsequent substrate stacking or continuous lamination processing; on the fourth aspect, the position layout of the heating roller is even, so that the heating is uniform, and under the foil layout, it is convenient to gather heat energy, thereby improving the drying effect while reducing energy consumption.

[0040] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the scope of protection of the present invention. Any equivalent changes or modifications made based on the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drying process for floor cleaning, comprising a drying step and an air-drying step, wherein the drying section employed in the drying step comprises an oven and a heating roller disposed within the oven for heating the substrate; and the air-drying section employed in the air-drying step comprises a bellows and an airflow assembly for generating convection within the bellows, characterized in that: The oven includes a drying trough extending in a vertical direction, a feed trough and a discharge trough extending horizontally on opposite sides of the drying trough, and is clamped and transferred by a feed robot and a discharge robot, and the process includes a first drying step and a post-air drying step, wherein the drying step includes: the feed robot transfers the substrate from the feed trough to the drying trough, at which time the substrate is converted from a horizontal state to a vertical state, then the discharge robot clamps the substrate in the drying trough and separates from the feed robot, and then the discharge robot transfers the substrate from the drying trough to the discharge trough, at this time, the substrate is converted from a vertical state to a horizontal state, and the substrate is flipped 180°; the air drying step includes: the discharge robot translates the flanged substrate into the bellows, and the surface of the substrate coated with the cleaning liquid is dried by the up and down convection wind to form a solidified resin layer.

2. The drying process for floor cleaning according to claim 1, characterized in that: A feeding track is formed between the feeding trough and the drying trough, and the feeding robot reciprocates between the feeding trough and the drying trough along the feeding track; a discharging track is formed between the discharging trough and the drying trough, and the discharging robot reciprocates between the discharging trough and the drying trough along the discharging track.

3. The drying process for floor cleaning according to claim 2, characterized in that: The feed track and the discharge track are symmetrically arranged, and include a horizontal section arranged horizontally, a vertical section arranged vertically in the drying tank, and a curved section for connecting the horizontal section with the vertical section.

4. The drying process for floor cleaning according to claim 3, characterized in that: A transverse restriction port is provided at the end of the horizontal section away from the curved section, and a longitudinal restriction port is provided at the lower end of the vertical section. The feeding robot and the discharging robot move on the corresponding feeding channel and discharging track through the feeding trolley and the discharging trolley respectively, and the feeding trolley and the discharging trolley move between the transverse restriction port and the longitudinal restriction port respectively, and the corresponding substrate switches between horizontal and vertical.

5. The drying process for floor cleaning according to claim 2, characterized in that: The heating roller is distributed between the side wall of the drying tank and the feed track and the discharge track, and is extended along the width direction of the feed track and the discharge track.

6. The drying process for floor cleaning according to claim 1, characterized in that: A foil is further provided between the heating roller and the side wall of the drying tank.

7. The drying process for floor cleaning according to claim 6, characterized in that: The foil is provided at the bottom of the drying tank, and the heating roller is further provided above the foil, wherein the heating roller at the bottom and the heating roller at the side are arranged parallel to each other.

8. The drying process for floor cleaning according to claim 1, characterized in that: The airflow assembly includes an inlet fan and an exhaust fan respectively arranged on opposite sides of the wind box. Under the arrangement of the inlet fan and the exhaust fan, the substrate passing through the wind box can quickly dissipate heat in the convective airflow so that the cleaning solvent on the surface of the substrate forms a solidified resin layer.

9. The drying process for floor cleaning according to claim 1, characterized in that: The discharging robot and the feeding robot are adsorbed on opposite sides of the substrate by negative pressure, and the substrate can be transferred between the discharging robot and the feeding robot in the drying tank by lateral translation.

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