Bamboo material gluing system and bamboo material gluing method

Abstract

The present invention provides a bamboo gluing system and a bamboo gluing method. The bamboo gluing system comprises a glue spraying device, a thickness detection device, a glue rolling device and a drying device which are sequentially arranged along the processing station. The glue spraying device is arranged above the pretreatment station, and is used to perform glue spraying pretreatment on the surface of the bamboo material, so that a pretreatment glue layer is uniformly formed on the upper surface of the bamboo material. The thickness detection device is used to measure the thickness of the bamboo material after the glue spraying pretreatment, and obtain the thickness information of the bamboo material. The glue rolling device comprises an upper glue roller and a lower glue roller, and the upper glue roller is used to apply glue to the pretreatment glue layer of the bamboo material. The lower glue roller is used to apply glue to the lower surface of the bamboo material. The glue rolling device controls the distance between the upper glue roller and the lower glue roller according to the detected thickness of the thickness detection device. The bamboo gluing system and bamboo gluing processing method are convenient for bamboo gluing and glue drying.

Description

Technical Field

[0001] The invention relates to the field of bamboo material processing, and in particular to a bamboo material gluing system and a bamboo material gluing method. Background Art

[0002] At present, in the container bamboo wood flooring manufacturing industry, the gluing process for bamboo wood raw materials usually mainly adopts the method of dipping and rolling glue. Due to the dipping process, the thickness of glue on the bamboo is relatively large, the glue consumption is relatively large, and the bamboo after dipping needs to be dried twice, which not only affects production, but also has low production efficiency. Summary of the invention

[0003] One object of the present invention is to solve the deficiencies in the prior art and to provide a bamboo gluing system and a bamboo gluing processing method which are convenient for bamboo gluing and glue drying.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A bamboo gluing system is used for gluing bamboo, and the bamboo gluing system comprises a glue spraying device, a thickness detection device, a glue rolling device and a drying device which are sequentially arranged along the processing station, wherein:

[0006] A glue spraying device is arranged above the pretreatment station and is used to spray glue pretreatment on the surface of the bamboo material so that a pretreatment glue layer is evenly formed on the upper surface of the bamboo material;

[0007] A thickness detection device is arranged behind the glue spraying device, and is used to measure the thickness of the bamboo material after glue spraying pretreatment to obtain the thickness information of the bamboo material;

[0008] A glue rolling device is provided at the glue rolling station, the glue rolling device comprises an upper glue roller and a lower glue roller, the upper glue roller is used to apply glue to the pre-treated glue layer of the bamboo material, the lower glue roller is used to apply glue to the lower surface of the bamboo material, and the glue rolling device controls the distance between the upper glue roller and the lower glue roller according to the detected thickness of the thickness detection device;

[0009] The drying device is arranged above the drying station and is used for drying the glue layer on the bamboo material.

[0010] Furthermore, the glue rolling device also includes a lifting and adjusting device, through which the upper glue roller can be lifted and lowered above the glue rolling station, and the lifting and adjusting device controls and adjusts the height of the upper glue roller according to the thickness information of the bamboo material.

[0011] Furthermore, the glue rolling device also includes a glue scraping roller, which is arranged on one side of the upper rubber roller and is used to scrape off residual glue on the upper rubber roller.

[0012] Furthermore, the lower rubber roller is arranged in a glue groove, and the glue groove is also located below the upper rubber roller. The residual glue scraped off from the upper rubber roller by the rubber scraping roller falls and is recovered into the glue groove.

[0013] Furthermore, it also includes a moisture content detection device, which is arranged between the glue rolling device and the drying device. The moisture content detection device is used to detect the moisture content of the bamboo material after being glued by the glue rolling device, and the drying device controls the drying of the bamboo material according to the moisture content information feedback.

[0014] A bamboo material gluing method, comprising:

[0015] Performing glue spraying pretreatment on the surface of the bamboo material so that a pretreated glue layer is formed on the surface of the bamboo material;

[0016] Collect the thickness information of the bamboo material after spraying glue;

[0017] Rolling glue on the glue-sprayed bamboo material, and controlling the thickness of the glue rolling on the bamboo material according to the collected bamboo material thickness information;

[0018] Dry the bamboo after rolling glue.

[0019] Furthermore, in the step of pre-treating the surface of the bamboo material by spraying glue to form a pre-treated glue layer on the surface of the bamboo material, the air pressure of the glue spraying device is 8MPa to 12MPa.

[0020] Furthermore, the step of rolling glue on the glue-sprayed bamboo material and controlling the rolling glue thickness of the bamboo material according to the collected bamboo material thickness information comprises:

[0021] When the thickness information of the bamboo material is greater than the preset thickness, the upper rubber roller is raised to increase the distance between the upper rubber roller and the lower rubber roller; when the thickness information of the bamboo material is less than the preset thickness, the upper rubber roller is lowered to reduce the distance between the upper rubber roller and the lower rubber roller.

[0022] Furthermore, the method also includes scraping glue on the bamboo material after rolling glue and collecting excess glue.

[0023] Furthermore, the method further comprises: detecting the moisture content of the bamboo material after the glue rolling, and controlling the drying of the bamboo material according to the moisture content of the bamboo material.

[0024] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0025] In the present application, the surface of the bamboo is pretreated first, and the pretreated glue layer can fill the gaps on the surface of the bamboo in advance, so that the surface of the bamboo is a smooth surface, which is convenient for the subsequent rolling glue application operation. The rolling glue application method avoids the use of the dipping method, saves the amount of glue used, and saves costs.

[0026] In addition, the pre-treated glue layer is formed by spraying atomized glue on the surface of the bamboo material. The thickness of the pre-treated glue layer is relatively thin, so the pre-treated glue layer is very easy to dry, and no additional drying operation is required. The pre-treated glue layer can be dried smoothly. Therefore, the gluing performance of the pre-treated bamboo material is improved, and sufficient rolling glue can be applied to the bamboo material, which not only solves the problem of gluing process but also achieves the purpose of saving materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a bamboo material gluing system according to one embodiment of the present invention.

[0028] Figure 2 The present invention is a flowchart of a bamboo material gluing method according to an embodiment of the present invention.

[0029] Figure 3 yes Figure 2 The specific flow chart of step S11 is shown.

[0030] Figure 4 yes Figure 2 The specific flow chart of step S14 is shown.

[0031] The reference numerals are as follows: 1. pre-treatment station; 2. thickness detection station; 3. glue rolling station; 4. drying station; 5. automatic stacking station; 8. 81, 82, 83, 84, bamboo material; 9. roller;

[0032] 10. First moisture content detection device; 11. Glue spraying device; 111. Nozzle; 21. Thickness detection device; 31. Glue rolling device; 32. Upper rubber roller; 33. Lower rubber roller; 34. Lifting and adjusting device; 35. Glue scraping roller; 36. Glue tank; 41. Drying device; 42. Second moisture content detection device; 43. Third moisture content detection device; 45. Glue curing lamp; 51. Automatic stacking device; 52. Lifting bracket; 53. Storage frame. DETAILED DESCRIPTION

[0033] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0034] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] The invention provides a bamboo material gluing system and a bamboo material gluing method. The bamboo material gluing system processes bamboo material according to the bamboo material gluing method. The bamboo material can be used as a container floor.

[0037] The bamboo material gluing system of this embodiment is used for gluing bamboo materials. Figure 1 The bamboo material gluing system includes a plurality of processing stations arranged in sequence, including a pretreatment station 1, a thickness detection station 2, a glue rolling station 3, a drying station 4 and an automatic stacking station 5. The plurality of processing stations are used to process the bamboo material 8, and the bamboo material 8 is transferred between the stations through a roller 9. The bamboo material gluing system includes a glue spraying device 11, a thickness detection device 21, a glue rolling device 31, a drying device 41 and an automatic stacking device 51 arranged in sequence along the plurality of processing stations.

[0038] Specifically in this embodiment, the bamboo material gluing system further includes a first moisture content detection device 10, which is used to detect the moisture content of the bamboo material 8. When the moisture content of the bamboo material 8 detected by the first moisture content detection device 10 exceeds a preset range, the moisture content of the bamboo material 8 is too high or too low, and is not suitable for processing and manufacturing. This type of bamboo material needs to be removed to improve the product qualification rate. For example, the preset range of moisture content can be 10%-30%.

[0039] Specifically in this embodiment, the first moisture content detection device 10 is movably disposed in front of the pretreatment station 1. When the bamboo material 8 is conveyed to the bottom of the first moisture content detection device 10, the first moisture content detection device 10 descends and makes its moisture content detection probe contact with the bamboo material 8 to detect the moisture content of the bamboo material 8.

[0040] The glue spraying device 11 is arranged above the pretreatment station 1. The glue spraying device 11 includes a plurality of uniformly arranged nozzles 111. The glue spraying device 11 is used to spray glue pretreatment on the surface of the bamboo material 8 so that a pretreatment glue layer is uniformly formed on the surface of the bamboo material 8. The pretreatment glue layer is a thin film layer. The thickness of the film layer is greater than 0.2 mm-1 mm.

[0041] During the processing of the bamboo material 8, due to the material characteristics of the bamboo material 8, large and small cracks will appear on the surface of the bamboo material 8. The bamboo material with the green surface removed includes the yellow surface and the flesh surface. Among them, the cracks on the yellow surface of the bamboo material are more obvious, and the above cracks will affect the adhesion strength of the glue. The gluing performance of the yellow surface is relatively weak. In contrast, the gluing performance of the flesh surface is relatively good, and the flesh surface can also be selectively pre-treated.

[0042] In order to solve the problem that the traditional glue rolling device cannot smoothly glue the surface of the bamboo material 8, if the bamboo material 8 is completely glued by dipping, the amount of glue used in this method is large, and the amount of glue is not easy to control, which increases the production cost of the bamboo material 8. Due to the thick thickness of the glue layer, secondary drying is often required to ensure that the glue layer can be fully dried, the production time is long, and the efficiency is low.

[0043] In the present application, the surface of the bamboo material 8 is pretreated first, especially the yellow surface of the bamboo material 8 is pretreated, and a pretreated glue layer is formed on the surface of the bamboo material 8. The pretreated glue layer can fill the gaps on the surface of the bamboo material 8 in advance, so that the surface of the bamboo material 8 becomes a smooth surface, which is convenient for the subsequent rolling glue gluing operation.

[0044] Moreover, the pre-treated glue layer is formed by spraying the glue in the form of mist on the surface of the bamboo material 8. The thickness of the pre-treated glue layer is relatively thin, so the pre-treated glue layer is very easy to dry, and no additional drying operation is required. The pre-treated glue layer can be dried smoothly. Therefore, the pre-treated bamboo material 8 has better gluing performance, and can achieve sufficient rolling glue application on the bamboo material 8, which not only solves the gluing process problem but also achieves the purpose of saving materials.

[0045] The thickness detection device 21 is located on the thickness detection station 2. The thickness detection device 21 is arranged behind the glue spraying device 11 and in front of the glue rolling device 31. The thickness detection device 21 is used to measure the thickness of the bamboo material 81 after the glue spraying pretreatment to obtain the thickness information of the bamboo material 81. The thickness of the bamboo material 81 is measured to facilitate the glue rolling treatment of the bamboo material 81 in the subsequent steps.

[0046] Specifically in this embodiment, the thickness detection device 21 can be a laser automatic thickness gauge. The laser automatic thickness gauge can transmit the measured raw data to the controller for processing and calculation. The controller is equipped with a synchronous circuit, a motor drive circuit and other circuit systems, which can realize functions such as data storage and display, and the measurement results are directly displayed on the computer screen.

[0047] In addition, the thickness detection device 21 can also play a role in real-time detection by detecting the thickness of the bamboo material 81, which is conducive to timely control of the thickness of the board and ensures the real-time detection. At the same time, it can detect enough data to achieve overall detection, so as to find bamboo materials 81 that do not meet the thickness standards and make timely adjustments.

[0048] The glue rolling device 31 is provided at the glue rolling station 3. The glue rolling device 31 comprises an upper glue roller 32 and a lower glue roller 33. The upper glue roller 32 is used to apply glue to the pre-treated glue layer of the bamboo material 8. The lower glue roller 33 is used to apply glue to the lower surface of the bamboo material 8. The glue rolling device 31 controls the distance between the upper glue roller 32 and the lower glue roller 33 according to the thickness information detected by the thickness detection device 21.

[0049] The glue rolling device 31 also includes a lifting and adjusting device 34. The lifting and adjusting device 34 is connected to the thickness detection device 21 by signal. The upper glue roller 32 can be lifted and lowered above the glue rolling station through the lifting and adjusting device 34. In addition, the lifting and adjusting device 34 controls and adjusts the height of the upper glue roller 32 according to the thickness information of the bamboo material 81 obtained by the thickness detection device 21. By adjusting the height of the upper glue roller 32, the distance between the upper glue roller 32 and the lower glue roller 33 can be adjusted, so as to ensure that the distance can meet the bamboo material 81 of the thickness. When passing between the upper and lower glue rollers 33, the upper glue roller 32 can contact the upper surface of the bamboo material 81, thereby realizing gluing the upper surface of the bamboo material 81.

[0050] Specifically, in this embodiment, the lifting and adjusting device 34 also includes a slide plate and an elastic member. Bearing seats are provided at both ends of the rotating shaft of the upper rubber roller 32, and the bearing seats are installed on the slide plate. The bearing seats can be lifted and moved up and down along the slide plate. An elastic member is provided between the bearing seat and the slide plate, and the elastic member can elastically adjust the height of the upper rubber roller 32.

[0051] The lower rubber roller 33 is used to apply glue to the lower surface of the bamboo material 81. A glue groove 36 is provided at the bottom of the lower rubber roller 33. Glue is contained in the glue groove 36. The lower rubber roller 33 rotates, and the glue is transferred to the surface of the lower rubber roller 33.

[0052] Specifically in this embodiment, the upper rubber roller 32 is powered by a motor. The upper rubber roller 32 is connected to the transmission through a sprocket, and the sprocket is used to drive the upper rubber roller 32 to rotate. A nozzle is provided above the upper rubber roller 32, and the nozzle pumps glue to the upper part of the upper rubber roller 32 through a booster pump. The nozzle sprays glue toward the surface of the upper rubber roller 32, and the glue is transferred to the surface of the upper rubber roller 32.

[0053] When the bamboo material 8 is conveyed to the position where the lower rubber roller 33 and the upper rubber roller 32 are opposite, the upper surface of the bamboo material 81 is glued by the upper rubber roller 32, and the lower surface of the bamboo material 81 is glued by the lower rubber roller 33. Then, a uniform glue layer is attached to the upper and lower surfaces of the bamboo material 811 passing through the upper rubber roller 32 and the lower rubber roller 33.

[0054] Moreover, when the bamboo material passes through the opposite position of the upper rubber roller 32 and the lower rubber roller 33, the gap between the upper rubber roller 32 and the lower rubber roller 33 is the thickness of the bamboo material after gluing. Therefore, by adjusting the gap between the upper rubber roller 32 and the lower rubber roller 33, the degree of compression between the upper rubber roller 32 and the bamboo material is adjusted, so as to achieve the purpose of adjusting the thickness of the bamboo material glue within a certain range.

[0055] The thickness of the bamboo material is about 4mm-8mm. For bamboo materials of different thicknesses, the upper glue roller 32 can adjust the height accordingly to adapt to the bamboo materials of different thicknesses for glue rolling. In addition, by adjusting the height of the upper glue roller 32, the purpose of adjusting the amount of glue applied to the bamboo material can also be achieved. Specifically in this embodiment, the amount of glue applied to the bamboo material is 260g / m 2 ~400g / m 2 .

[0056] The glue rolling device 31 also includes a glue scraping roller 35. The glue scraping roller 35 is rotatably arranged on one side of the upper fabric glue roller 32, and is used to scrape off the residual glue on the upper fabric glue roller 32. In addition, the glue scraping roller 35 is arranged on one side of the upper fabric glue roller 32 through a lifting hanger. When the upper fabric glue roller 32 needs to be scraped, the glue scraping roller 35 is lowered and its height is adjusted so that the glue scraping roller 35 can keep in contact with the upper fabric glue roller 32. While the upper fabric glue roller 32 rotates, the glue scraping roller 35 is located on one side of the upper fabric glue roller 32 and rotates to scrape off the residual glue on the surface of the upper fabric glue roller 32. In addition, when the upper fabric glue roller 32 processes the bamboo material, in order to prevent the glue scraping roller 35 from affecting the normal work of the upper fabric glue roller 32, the glue scraping roller 35 is raised by the lifting hanger to avoid the upper fabric glue roller 32.

[0057] Most of the glue on the upper rubber roller 32 is transferred to the upper surface of the bamboo material, but there will inevitably be residual glue on the upper rubber roller 32. To facilitate the next use of the upper rubber roller 32, the scraping roller 35 can scrape off the residual glue on the surface of the upper rubber roller 32. In addition, the scraped glue can automatically fall into the glue groove 36 below, thereby realizing the recycling of glue.

[0058] Specifically, a scraper plate is provided on the surface of the scraper roller 35 along its axial direction. The scraper plate contacts the surface of the upper glue roller 32 to scrape off the glue.

[0059] The drying device 41 is arranged above the drying station 4. The drying device 41 is used to dry the glue layer on the bamboo material 82. The drying device 41 can be a wind drying device or a lamp heating drying device. Specifically in this embodiment, the drying device 41 includes a plurality of glue curing lamps 45 extending and arranged along the conveying direction of the bamboo material 82. The glue on the upper surface of the bamboo material 82 is irradiated, heated and cured by the glue curing lamps 45. In addition, the heat emitted by the glue curing lamps 45 can dry the glue on the lower surface of the bamboo material 82 in a high temperature environment to achieve the purpose of controlling the moisture content of the bamboo material.

[0060] The bamboo material gluing system of this embodiment further includes a second moisture content detection device 42. The second moisture content detection device 42 is disposed between the glue rolling device 31 and the drying device 41. The second moisture content detection device 42 is used to detect the moisture content of the bamboo material 82 after being glued by the glue rolling device 31, and obtain moisture content information. The drying device 41 controls the drying time according to the moisture content information.

[0061] Before the bamboo material 82 after the glue rolling enters the drying device 41, the moisture content of the bamboo material 82 is detected by the second moisture content detection device 42. The drying device 41 can be set with a preset moisture content value. When the moisture content is higher than the preset moisture content value, the drying device 41 controls the conditions such as increasing the drying time and increasing the drying temperature to accurately dry the bamboo material. When the moisture content is lower than the preset moisture content value, the drying device 41 can accurately control the moisture content of the bamboo material by controlling to shorten the drying time and lower the drying temperature. Therefore, the moisture content information of the bamboo material 82 can be fed back in time, which has a great effect on the drying process of the bamboo material 82 and ensures the production quality of the bamboo material 82. Therefore, it is controlled by processing methods such as the drying process to make the moisture content of the floor within a controllable range.

[0062] The bamboo material gluing system of this embodiment further includes a third moisture content detection device 43. The third moisture content detection device 43 is disposed behind the drying device 41. The third moisture content detection device 43 is used to detect the moisture content of the bamboo material 83 after being dried by the drying device 41. The third moisture content detection device 43 can play a monitoring role. For bamboo materials 83 whose moisture content does not meet the standard, a second drying process will be performed again until the standard is met. For example: According to the national standard, the moisture content of the plywood for container flooring must be ≤12%. If the moisture content is within the range of ≤12%, the mechanical properties of the bamboo board 83 are the best.

[0063] The automatic stacking station 5 is provided with an automatic stacking device 51. The automatic stacking device 51 can automatically store the bamboo materials 84 that have passed the drying process, so as to facilitate subsequent handling, processing and other operations. Specifically, the automatic stacking device 51 includes a lifting bracket 52 for lifting support and a storage frame 53 for storing the bamboo materials 84. Before the storage begins, the lifting bracket 52 is raised so that the bearing surface of the storage frame 53 is the same as the height of the automatic stacking station 5, so that the bamboo materials 8 can be smoothly transferred to the storage frame 53. As the height of the bamboo materials 84 in the storage frame 53 increases, the lifting bracket 52 is lowered so that the height of the top bamboo materials 84 is aligned with the height of the automatic stacking station 5, so that the bamboo materials 84 can always be smoothly transferred to the storage frame 53.

[0064] The bamboo material gluing method of this embodiment is shown in Figure 2 , specifically including the following steps:

[0065] Step S11, spraying glue pretreatment on the surface of the bamboo material to form a pretreated glue layer on the surface of the bamboo material.

[0066] The glue spraying device 11 of the bamboo material glue application system is utilized, and the spray head of the glue spraying device 11 is arranged opposite to the surface of the bamboo material.

[0067] The specific step S11 includes: please refer to Figure 3 , step S110, testing the moisture content of the bamboo material to determine whether the bamboo material is suitable for processing.

[0068] When the moisture content of the bamboo material 8 exceeds the preset range, the moisture content of the bamboo material 8 is too high or too low and is not suitable for processing and production. The bamboo material 8 needs to be removed to improve the product qualification rate. For example, the preset range of moisture content can be 10%-30%.

[0069] See also Figure 3 , step S111, the yellow surface of the bamboo material is arranged opposite to the glue spraying device.

[0070] Treat the bamboo with a moisture content suitable for processing, and pre-treat the yellow side of the bamboo with glue. The gaps on the yellow side of the bamboo are relatively obvious compared to the bamboo side, and the gaps will affect the adhesion strength of the glue. The gluing performance of the yellow side is relatively weak, so it is preferred to pre-treat the yellow side with glue. In contrast, the gluing performance of the bamboo side is relatively good, and the bamboo side can also be selectively pre-treated.

[0071] Specifically, the air pressure of the glue spraying device 11 is 8MPa to 12MPa. The glue sprayed is in a semi-atomized state. The semi-atomized glue spray can be well filled in the gaps on the surface of the bamboo material, thereby improving the gluing performance of the bamboo material surface. Moreover, the semi-atomized glue spray can be dried relatively easily without the need for drying.

[0072] Furthermore, step S11 may further include step S112, where, after the pretreatment of the yellow side of the bamboo is completed, the bamboo flesh side is further subjected to glue spraying pretreatment. Then, both sides of the bamboo material are subjected to glue spraying pretreatment, ensuring that both sides of the bamboo material have good gluing properties and that the entire bamboo material is smoothly glued.

[0073] Step S12, collecting thickness information of the bamboo material after spraying with glue.

[0074] The thickness of the bamboo material after spraying glue is measured by the thickness detection device 21. Since the thickness of the bamboo material varies, the thickness information can provide judgment conditions for the subsequent processing steps, which can facilitate the smooth operation of the subsequent steps.

[0075] Step S13, rolling glue on the bamboo material after glue spraying, and controlling the thickness of the bamboo material according to the collected bamboo material thickness information.

[0076] When the thickness information of the bamboo material is greater than the preset thickness, the upper rubber roller 32 is raised to increase the distance between the upper rubber roller 32 and the lower rubber roller 33; when the thickness information of the bamboo material is less than the preset thickness, the upper rubber roller 32 is lowered to reduce the distance between the upper rubber roller 32 and the lower rubber roller 33. By adjusting the lifting and lowering of the upper rubber roller 32, the gap distance between the upper rubber roller 32 and the lower rubber roller 33 is adjusted. The size of the gap distance is the thickness of the bamboo material after gluing. According to the thickness of the bamboo material after gluing, the rolling thickness of the bamboo material surface can be obtained.

[0077] Step S14, drying the bamboo material after rolling with glue.

[0078] See also Figure 4 Specifically, step S141 is to detect the moisture content of the bamboo material after rolling with glue, and control the drying of the bamboo material according to the moisture content of the bamboo material.

[0079] Before the bamboo material after the glue rolling enters the drying device 41, the moisture content of the bamboo material is detected by the moisture content detection device to obtain the moisture content information of the bamboo material after the glue rolling.

[0080] The drying device 41 can be set with a preset moisture content value. When the moisture content is higher than the preset moisture content value, the drying device 41 controls to increase the drying time, increase the drying temperature, etc. to accurately control the moisture content of the bamboo; when the moisture content is lower than the preset moisture content value, the drying device 41 controls to shorten the drying time, reduce the drying temperature, etc. to accurately control the moisture content of the bamboo.

[0081] It is understandable that in other embodiments, the bamboo gluing method can also adjust the transport speed or hot air volume of the automatic drying device according to online moisture content detection, so as to ensure that the moisture content of the bamboo after drying meets the standard requirements.

[0082] Therefore, the moisture content information of bamboo can be fed back in time, which has a great effect on the drying process of bamboo and ensures the production quality of bamboo. Therefore, it is controlled by processing methods such as drying process to keep the moisture content of bamboo within a controllable range.

[0083] Step S143, testing the moisture content of the dried bamboo to determine whether the drying is complete.

[0084] This time, the moisture content detection device can play a monitoring role. For boards with moisture content that does not meet the standard, they will be dried again until they meet the standard. For example: below the fiber saturation point of bamboo, controlling the moisture content of bamboo at 15%-25% will make the processing of bamboo easier and ensure the mechanical properties of bamboo are better. According to the national standard, the moisture content of plywood for container floors must be ≤12%. If the moisture content is within the range of ≤12%, the mechanical properties of bamboo boards are better.

[0085] Step S15, scraping glue on the bamboo after rolling glue, and collecting excess glue.

[0086] The scraper roller 35 can scrape off the residual glue on the upper rubber roller 32. Most of the glue on the upper rubber roller 32 is transferred to the upper surface of the bamboo material, but the upper rubber roller 32 will inevitably have residual glue. In order to facilitate the next use of the upper rubber roller 32, the scraper roller 35 can scrape off the residual glue on the surface of the upper rubber roller 32. In addition, the scraped glue can automatically fall into the glue groove below, realizing the recycling of glue.

[0087] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0088] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A bamboo gluing method, characterized in that: include: The moisture content of the bamboo material is detected so that the moisture content of the bamboo material is within a preset range of 10%-30%; when the moisture content of the bamboo material exceeds the preset range, the moisture content of the bamboo material is too high or too low and is not suitable for processing and manufacturing, and the bamboo material needs to be removed to improve the product qualification rate; When the moisture content of the bamboo material is within a preset range, spraying glue pretreatment on the surface of the bamboo material; Performing glue spraying pretreatment on the surface of the bamboo material so that a pretreated glue layer is formed on the surface of the bamboo material; The pre-treated glue layer can fill the gaps on the surface of the bamboo material in advance, and the surface of the bamboo material becomes a smooth surface, which is convenient for subsequent rolling glue gluing operations; the pre-treated glue layer is formed by spraying a mist of glue on the surface of the bamboo material, and the thickness of the pre-treated glue layer is relatively thin and easy to dry, and no additional drying operation is required; Collect the thickness information of bamboo after spraying glue; Rolling glue on the glue-sprayed bamboo material, and controlling the thickness of the glue rolling on the bamboo material according to the collected bamboo material thickness information; Dry the bamboo after rolling glue.

2. The bamboo material gluing method according to claim 1, characterized in that: The step of spraying glue pretreatment on the surface of the bamboo material to form a pretreated glue layer on the surface of the bamboo material includes: the air pressure of the glue spraying device is 8MPa~12MPa.

3. The bamboo material gluing method according to claim 1, characterized in that: The step of rolling glue on the glue-sprayed bamboo material and controlling the rolling glue thickness of the bamboo material according to the collected bamboo material thickness information comprises: When the thickness information of the bamboo material is greater than the preset thickness, the upper rubber roller is raised to increase the distance between the upper rubber roller and the lower rubber roller; when the thickness information of the bamboo material is less than the preset thickness, the upper rubber roller is lowered to reduce the distance between the upper rubber roller and the lower rubber roller.

4. The bamboo material gluing method according to claim 2, characterized in that: The method also includes scraping glue from the upper rubber roller after rolling glue and collecting excess glue.

5. The bamboo material gluing method according to claim 2, characterized in that: Also includes: The moisture content of the bamboo material after the glue rolling is detected, and the drying of the bamboo material is controlled according to the moisture content of the bamboo material.

Images