Slab processing equipment

Abstract

The utility model discloses slab processing equipment. The slab processing equipment comprises a preheating device and a compression roller device, the preheating device is configured to perform heat treatment on the plate blank; and the compression roller device is arranged at an outlet of the preheating device and is configured to compress the plate blank output from the preheating device. By additionally arranging the compression roller device at the rear end of the preheating device, the compression roller device can compress the heated plate blank, so that the thickness of the plate blank is reduced, the density of the plate blank is improved, the internal bonding strength of the plate blank is improved, meanwhile, the internal quality of the plate blank is improved, and therefore sufficient technological conditions are created for the subsequent technological processes such as high-speed hot pressing of the plate blank.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to a slab processing device. BACKGROUND

[0002] The slab production process of medium density fiberboard (MDF), such as super-thin fiberboard, is an important technology in the field of wood fiberboard manufacturing, and the finished product board formed thereby can be used to make furniture and the like. The slab production process mainly includes feeding, laying, heating, and pressing, and different preparation processes have an important influence on the quality of the finished product board. CONTENT OF THE UTILITY MODEL

[0003] At least one embodiment of the present disclosure provides a slab processing device, which comprises a preheating device and a compression roller device; the preheating device is configured to perform heat treatment on the slab; the compression roller device is arranged at the outlet of the preheating device and is configured to compress the slab output from the preheating device.

[0004] For example, in the slab processing device provided by at least one embodiment of the present disclosure, the preheating device is configured to perform heat treatment on the slab, which comprises that the preheating device is configured to perform wet heat treatment on the slab by using a mixture of steam and hot air.

[0005] For example, in the slab processing device provided by at least one embodiment of the present disclosure, the preheating device comprises a preheating plate assembly and a hot plate assembly; the preheating plate assembly comprises at least one preheating plate and is configured to perform preheating treatment on the slab; the hot plate assembly is arranged downstream of the preheating plate assembly and comprises at least one hot plate and at least one hot pipe for conveying the mixture, and is configured to perform wet heat treatment on the slab.

[0006] For example, in the slab processing device provided by at least one embodiment of the present disclosure, the hot plate assembly comprises: oppositely arranged first and second hot plates, first and second hot pipes; the first hot pipe is arranged on the side of the first hot plate away from the second hot plate and is configured to blow air to the first hot plate; the second hot pipe is arranged on the side of the second hot plate away from the first hot plate and is configured to guide air away from the second hot plate, wherein a slab conveying device is arranged between the first and second hot plates and is configured to convey the slab.

[0007] For example, in the slab processing device provided by at least one embodiment of the present disclosure, the number of hot plate assemblies is multiple, and the first and second hot pipes of the multiple hot plate assemblies are arranged alternately on the same side of the slab conveying device.

[0008] For example, the slab processing device provided by at least one embodiment of the present disclosure further comprises a press device arranged downstream of the compression roller device and configured to press the slab output from the compression roller device.

[0009] For example, the slab processing equipment provided by at least one embodiment of the present disclosure further comprises a pre-pressing device arranged upstream of the pre-heating device and configured to perform a pre-pressing process on the slab.

[0010] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the compression roller device has a first compression speed for the slab, and the pre-pressing device has a second compression speed for the slab, and the first compression speed is greater than the second compression speed.

[0011] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the compression roller device comprises a frame and a first compression roller and a second compression roller, and the first compression roller and the second compression roller are arranged on the frame, wherein at least one of the first compression roller and the second compression roller is movable to adjust the gap between the first compression roller and the second compression roller.

[0012] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the first compression roller comprises a first roller, and the second compression roller comprises a second roller, and the diameter of the first roller and / or the second roller is 500-800 mm.

[0013] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the compression roller device further comprises a first lifting device, a mounting plate, and a sliding rail, the first lifting device is arranged on the frame and comprises a first lifting end, the mounting plate is connected to the first lifting end, wherein the first compression roller is connected to the mounting plate, and the sliding rail is arranged on the frame, wherein the mounting plate is slidingly connected to the sliding rail.

[0014] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the first lifting device comprises a displacement sensor configured to detect the lifting distance of the first lifting end.

[0015] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the compression roller device further comprises a limiting device arranged on the side of the sliding rail close to the second compression roller and configured to limit the minimum gap between the first roller and the second roller.

[0016] For example, in the slab processing equipment provided by at least one embodiment of the present disclosure, the compression roller device further comprises a first compression roller limiting monitoring device arranged on the side of the first compression roller away from the second compression roller and configured to monitor the displacement of the first compression roller on the side away from the second compression roller.

[0017] For example, the slab processing equipment provided by at least one embodiment of the present disclosure further comprises an encoder and a controller. The encoder is configured to obtain the rotating speed of the first compression roller. The controller is configured to adjust the rotating speed of the first speed reducer according to the rotating speed of the first compression roller.

[0018] For example, the slab processing equipment provided by at least one embodiment of the present disclosure further comprises an encoder and a controller. The encoder is configured to obtain the rotating speed of the first compression roller. The controller is configured to adjust the rotating speed of the first speed reducer according to the rotating speed of the first compression roller.

[0019] In the embodiments of the present disclosure, by adding the compression roller device at the rear end of the preheating device, that is, adding the compression roller device at the outlet of the preheating device, the thickness of the slab can be further reduced, the density of the slab can be improved, the internal bonding strength of the slab can be improved, and the internal quality (such as internal defects such as crushed fiber balls or glue blocks) of the slab can be improved, thereby creating sufficient process conditions for the subsequent high-speed hot pressing process of the slab, avoiding damage to the steel belt of the subsequent continuous press / flat press (this effect is very important for ultra-thin plate production), improving the safety and production efficiency of the operation of the subsequent continuous press / flat press, and improving the quality of the finished product. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure, but not limit the present disclosure.

[0021] Figure 1 Part of the structure schematic diagram of the slab processing equipment provided by at least one embodiment of the present disclosure;

[0022] Figure 2 The structure schematic diagram of the preheating device of the slab processing equipment provided by at least one embodiment of the present disclosure;

[0023] Figure 3 The structure schematic diagram of the preheating plate assembly and the hot plate assembly of the preheating device of the slab processing equipment provided by at least one embodiment of the present disclosure;

[0024] Figure 4 Another part of the structure schematic diagram of the slab processing equipment provided by at least one embodiment of the present disclosure;

[0025] Figure 5 The three-dimensional schematic diagram of the compression roller device of the slab processing equipment provided by at least one embodiment of the present disclosure;

[0026] Figure 6 A structural schematic diagram of a first compression roller of a compression roller device of a slab processing equipment according to at least one embodiment of the present disclosure is provided;

[0027] Figure 7 A structural schematic diagram of a second compression roller of a compression roller device of a slab processing equipment according to at least one embodiment of the present disclosure is provided; and

[0028] Figure 8 A structural schematic diagram of a further part of a slab processing equipment according to at least one embodiment of the present disclosure is provided. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.

[0030] Unless otherwise defined, technical terms or scientific terms used in the present disclosure should be understood as the common meanings of the terms to those of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second” and similar terms used in the present disclosure do not denote any order, quantity or importance, but are used to distinguish different components. The terms “include”, “contain” and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper”, “lower”, “left”, “right” and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0031] In the MDF production process, the slab is usually subjected to preheating treatment before entering the continuous press / flattening press, so as to preheat the slab, increase the temperature of the slab, and increase the hot pressing efficiency of the subsequent continuous press / flattening press, thereby improving the production efficiency and production quality of the slab.

[0032] The inventors of the present disclosure found that the conventional preheating device can preheat the slab, increase the temperature of the slab, and increase the hot pressing efficiency of the subsequent continuous press / flattening press, but these devices still have some deficiencies, for example, they cannot effectively solve the problems of micro defects (such as fiber balls or glue blocks) inside the slab and the thickness of the slab, resulting in that the quality and yield of the slab still have room for improvement.

[0033] The slab processing equipment provided by at least one embodiment of the present disclosure comprises a preheating device and a compression roller device; the preheating device is configured to perform heat treatment on the slab; and the compression roller device is arranged at the outlet of the preheating device and is configured to compress the slab output from the preheating device.

[0034] In the embodiments of the present disclosure, by adding the compression roller device at the rear end of the preheating device, that is, adding the compression roller device at the outlet of the preheating device, the thickness of the slab can be further reduced, the density of the slab can be improved, the internal bonding strength of the slab can be improved, and the internal quality (such as internal defects such as crushed fiber balls or glue blocks) of the slab can be improved, thereby creating sufficient process conditions for the subsequent high-speed hot pressing process of the slab, avoiding damage to the steel belt of the subsequent continuous press / flat press (this effect is very important for ultra-thin plate production), improving the safety and production efficiency of the operation of the subsequent continuous press / flat press, and improving the quality of the finished product.

[0035] The slab processing equipment provided by the embodiments of the present disclosure is described below through several specific embodiments.

[0036] The slab processing equipment provided by at least one embodiment of the present disclosure comprises a preheating device and a compression roller device; the preheating device is configured to perform heat treatment on the slab; and the compression roller device is arranged at the outlet of the preheating device and is configured to compress the slab output from the preheating device. Figure 1 Part of the structure of the slab processing equipment is shown. As shown in Figure 1 The slab processing equipment comprises a preheating device 10 and a compression roller device 20; the preheating device 10 is configured to perform heat treatment on the slab; and the compression roller device 20 is arranged at the outlet of the preheating device 10 and is configured to compress the slab output from the preheating device 10.

[0037] In the embodiments of the present disclosure, the compression roller device 20 is arranged at the outlet of the preheating device 10 to directly compress the slab output from the preheating device 10, and there is no other device for processing the slab between the preheating device 10 and the compression roller device 20.

[0038] For example, in some embodiments, the preheating device 10 is configured to perform wet heat treatment on the slab by using a mixture of steam and hot air, so that the slab has good thermal plasticity.

[0039] For example, Figure 2 The structure of the preheating device is shown. As shown in Figure 2 In some embodiments, the preheating device 10 comprises a preheating plate assembly 11 and a hot plate assembly, and three hot plate assemblies 12-14 are shown as examples in the figure.

[0040] For example, Figure 3 The structure of the preheating plate assembly and the hot plate assembly is shown, and the structures of the preheating plate assembly and the hot plate assembly are shown in Figure 3The preheating plate assembly 11 includes at least one preheating plate, for example, two preheating plates 11A and 11B, which are arranged on opposite sides of the plate conveying device 15 and configured to preheat the plate conveyed on the plate conveying device 15. For example, the plate conveying device 15 can be a conveying belt or the like, and the two preheating plates 11A and 11B arranged on opposite sides of the plate conveying device 15 can preheat the plate from the top and bottom sides, thereby improving the temperature of the plate and the uniformity of the temperature of the plate.

[0041] For example, in combination with the second aspect and Figure 3 The hot plate assemblies 12-14 are arranged downstream of the preheating plate assembly 11, each including at least one hot plate and at least one hot pipe conveying a mixture of steam and hot air, and configured to perform wet heat treatment on the plate.

[0042] In the embodiments of the present disclosure, "downstream" of A and B means, in the direction of the plate advancing, for example Figure 1 In the first direction R in the first aspect, A is behind B, that is, the plate passes through B first and then A.

[0043] For example, in combination with the second aspect and Figure 3 For example, the hot plate assembly 12 includes a first hot plate 121A and a second hot plate 121B arranged oppositely, with the plate conveying device 15 arranged between the first hot plate 121A and the second hot plate 121B and configured to convey the plate. The hot plate assembly 12 further includes a first hot pipe 122A arranged on a side of the first hot plate 121A away from the second hot plate 121B and configured to blow air to the first hot plate 121A, thereby conveying a mixture of steam and hot air to the plate, and a second hot pipe 122B arranged on a side of the second hot plate 121B away from the first hot plate 121A and configured to blow air away from the second hot plate 121B, thereby forming an air direction as shown by the arrow in the figure, for example, upward. The air blown out of the first hot pipe 122A is a mixture of steam and hot air, and the above configuration can sufficiently achieve wet heat treatment of the plate and improve the plasticity of the plate.

[0044] For example, in combination with the second aspect and Figure 3 The number of hot plate assemblies is multiple, and three are shown as an example in the figure. The first hot pipes and the second hot pipes of the multiple hot plate assemblies 12-14 are arranged alternately on the same side of the plate conveying device 15. That is, the air directions of adjacent hot plate assemblies are opposite, thereby improving the uniformity of the wet heat treatment of the plate and achieving substantially the same and uniform treatment on both sides of the plate.

[0045] For example, in combination with the second aspect and Figure 3The hot plate assembly 13 comprises a first hot plate 131A and a second hot plate 131B arranged oppositely, and a plate blank conveying device 15 is arranged between the first hot plate 131A and the second hot plate 131B. The hot plate assembly 13 further comprises a first hot pipe 132A arranged on a side of the first hot plate 131A away from the second hot plate 121B, configured to blow air to the first hot plate 131A, so as to convey a mixture of steam and hot air to the plate blank, and a second hot pipe 132B arranged on a side of the second hot plate 131B away from the first hot plate 131A, configured to guide air away from the second hot plate 131B, so that the air direction formed thereby is shown by the arrow in the figure, which is downward.

[0046] For example, in combination with the second aspect and Figure 3 The hot plate assembly 14 comprises a first hot plate 141A and a second hot plate 141B arranged oppositely, and a plate blank conveying device 15 is arranged between the first hot plate 141A and the second hot plate 141B. The hot plate assembly 14 further comprises a first hot pipe 142A arranged on a side of the first hot plate 141A away from the second hot plate 121B, configured to blow air to the first hot plate 141A, and a second hot pipe 142B arranged on a side of the second hot plate 141B away from the first hot plate 141A, configured to guide air away from the second hot plate 141B, so that the air direction formed thereby is shown by the arrow in the figure, which is upward.

[0047] Therefore, as shown in Figure 3 , above the plate blank conveying device 15, the second hot pipe 122B, the first hot pipe 132A and the second hot pipe 142B are arranged in sequence, and below the plate blank conveying device 15, the first hot pipe 122A, the second hot pipe 132B and the first hot pipe 142A are arranged in sequence, so that on the same side of the plate blank conveying device 15, the first hot pipes and the second hot pipes of the plurality of hot plate assemblies 12-14 are arranged alternately, so that the air directions of adjacent hot plate assemblies are opposite, and in the embodiment of the first aspect Figure 3 , the air directions formed by the hot plate assemblies 12-14 are upward, downward and upward respectively, so as to improve the uniformity of the wet heat treatment of the plate blank, and the two surfaces of the plate blank are treated substantially the same and uniformly.

[0048] For example, in other embodiments, the number of hot plate assemblies can also be more or less, for example, two, four, five, six, etc., which can be selected according to requirements. For example, when the number of hot plate assemblies is four, the air directions formed by the four hot plate assemblies can be upward, downward, upward and downward respectively, achieving alternating distribution.

[0049] For example, in some embodiments, each of the preheating plates and the heating plates can include an oil channel, and heated by hot oil. The first heating pipe can be referred to as a blast pipe, and the second heating pipe can be referred to as an induced draft pipe. For example, in other embodiments, each of the preheating plates and the heating plates can also be heated by an electric heating plate, a water heating plate, or the like, and the embodiments of the present disclosure are not limited in this regard.

[0050] For example, in some embodiments, the air in the first heating pipe is a mixture of hot air and steam, and the front end of the first heating pipe can have a mixing chamber for mixing the hot air and the steam. Then, the mixture is blown onto the board blank through the first heating pipe.

[0051] In the embodiments of the present disclosure, the mixture of hot air and steam is used for preheating. In this process, the dew point temperature and the relative humidity can be accurately adjusted to ensure that the mixed hot air penetrates the board blank in the preheating device without dewing, so that the overall temperature of the board blank is increased, thereby improving the heat transfer efficiency of the board blank in the subsequent press device, shortening the residence time of the board blank in the press device, and improving the production capacity and product quality of the production line. In addition, during the preheating of the board blank, the alternately arranged heating pipes are beneficial to the uniform and synchronous increase of the core and surface layer temperature of the board blank. The preheating temperature of the board blank can reach more than 70℃. Through the above wet heat treatment, the board blank can have a uniform and consistent temperature and plasticity before entering the subsequent press device, thereby improving the quality of the finally formed board blank.

[0052] In addition, in the embodiments of the present disclosure, a press roller device 20 is added after the preheating device 10, for example, at the outlet of the last group of heating plate assemblies. The board blank after heat treatment can be further compressed in time to reduce the thickness of the board blank, improve the density of the board blank, and improve the internal bonding strength of the board blank, thereby creating sufficient process conditions for the subsequent high-speed hot pressing process of the board blank, avoiding damage to the steel belt of the subsequent continuous press / flat press, improving the pressing efficiency of the subsequent continuous press / flat press operation, and increasing the yield. At the same time, the improvement of the internal bonding strength of the board blank means that the board blank can enter the continuous press more safely and at a higher speed, avoiding the phenomenon of board blank breakage and back spray during high-speed feeding of the continuous press, thereby improving the safety and production efficiency of the subsequent continuous press / flat press operation, and improving the quality of the finished product.

[0053] For example, in some embodiments, as shown in Figure 1 The board blank processing equipment further includes a press device 30, which is arranged downstream of the press roller device 20 and is configured to press the board blank output from the press roller device 20. Figure 1In some embodiments, the first direction R is the direction in which the slab advances, and the press device 30 is arranged downstream of the compression roller device 20, indicating that the slab first undergoes processing by the compression roller device 20 and then undergoes processing by the press device 30. For example, the press device 30 is a continuous press, a hot press, or a flat press, and is configured to perform subsequent pressing, such as high-speed hot pressing, on the slab to make the slab close to the final product.

[0054] For example, Figure 4 Another part of the slab processing equipment provided by the embodiments of the present disclosure is shown in the schematic diagram. In some embodiments, as shown in Figure 4 As shown, the slab processing equipment can further include a pre-press device 40 arranged upstream of the preheating device 10 and configured to perform pre-pressing on the slab. The arrangement of the pre-press device 40 upstream of the preheating device 10 indicates that the slab first undergoes processing by the pre-press device 40 and is then transported to the preheating device 10 for heat treatment. The pre-pressed slab has an initial form, which can have certain defects and be different from the final product. By performing subsequent heat treatment on the slab in the initial form and secondary compression processing by the compression roller device 20, the density and internal bonding strength of the slab can be improved, and the internal quality of the slab (such as internal defects such as crushed fiber balls or glue blocks) can be improved, thereby creating sufficient process conditions for subsequent high-speed hot pressing and other process flows of the slab.

[0055] For example, in some embodiments, the compression roller device 20 has a first compression speed for the slab, and the pre-press device 40 has a second compression speed for the slab, and the first compression speed is greater than the second compression speed. That is, the secondary compression speed of the compression roller device 20 for the slab is greater than the pre-pressing speed of the pre-press device 40, and the compression roller device 20 can achieve rapid compression to timely compress the slab in a heated state with better plasticity, improve the density and internal bonding strength of the slab, remove internal defects of the slab, and improve the quality of the slab.

[0056] For example, Figure 5 A perspective view of the compression roller device of the slab processing equipment provided by at least one embodiment of the present disclosure is shown in the schematic diagram. In some embodiments, as shown in Figure 5 As shown, the compression roller device 20 includes a frame 21 and first and second compression rollers 22 and 23, and at least one of the first and second compression rollers 22 and 23 is movable to adjust the gap between the first and second compression rollers 22 and 23, so that the compression roller device 20 can provide corresponding pressing force and control the thickness of the output slab. In Figure 5 In some embodiments, the first and second compression rollers 22 and 23 are arranged in an up-down orientation to facilitate receiving the input slab.

[0057] For example, the first compression roller 22 comprises a first roller cylinder 221, and the second compression roller 23 comprises a second roller cylinder 231, the diameter of the first roller cylinder 221 and / or the second roller cylinder 231 is 500mm-800mm, for example, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm or 800mm, etc. In this way, the compression roller device 20 can adopt a large-diameter roller pair compression mode to compress the slab quickly and improve the compression force. For example, the compression roller device 20 is implemented as a heavy compression roller device.

[0058] For example, Figure 6 A structural schematic diagram of the first compression roller is shown, as Figure 6 As shown, the first compression roller 22 further comprises a first shaft head 222 and a first rib plate 223, one first shaft head 222 is connected to two (the case shown in the figure) or more first rib plates 223, and the first rib plate 223 can realize the function of supporting the first roller cylinder 221 and the first shaft head 222, realizing structural stability. For example, two first shaft heads 222 are respectively arranged on the opposite sides of the first roller cylinder 221 along the axial direction, so as to facilitate installation.

[0059] Figure 7 A structural schematic diagram of the second compression roller is shown, similarly, as Figure 7 As shown, the second compression roller 23 further comprises a second shaft head 232 and a second rib plate 233, one second shaft head 232 is connected to two (the case shown in the figure) or more second rib plates 233, and the second rib plate 233 can realize the function of supporting the second shaft head 232 and the second rib plate 233, realizing structural stability. For example, two second shaft heads 232 are respectively arranged on the opposite sides of the second roller cylinder 231 along the axial direction, so as to facilitate installation.

[0060] For example, in some embodiments, the compression roller device 20 further comprises a device for controlling the movement of at least one of the first compression roller 22 and the second compression roller 23. For example, in some embodiments, the first compression roller 22 is movable, and the second compression roller 23 is fixedly arranged, so as to control the distance between the first compression roller 22 and the second compression roller 23 by controlling the movement distance of the first compression roller 22 relative to the second compression roller 23; or, in other embodiments, the second compression roller 23 is movable, and the first compression roller 22 is fixedly arranged, so as to control the distance between the first compression roller 22 and the second compression roller 23 by controlling the movement distance of the second compression roller 23 relative to the first compression roller 22; or, in other embodiments, the first compression roller 22 and the second compression roller 23 are both movable, and the distance between the first compression roller 22 and the second compression roller 23 is controlled by controlling the movement of one or both of the first compression roller 22 and the second compression roller 23. In the following, the first compression roller 22 is movable, and the second compression roller 23 is fixedly arranged as an example to introduce the compression roller device 20.

[0061] For example, as Figure 5As shown, the pressure roller device 20 also includes a first lifting device 24, a mounting plate 25, and a slide rail 26; the first lifting device 24 is mounted on the frame 21 and includes a first lifting end 24A. The first lifting device 24 can control the extension and retraction of the first lifting end 24A, that is, in Figure 5 The first lifting end 24A is moved up and down by the control device 24; the mounting plate 25 is connected to the first lifting end 24A, and the first pressure roller 22 is connected to the mounting plate 25, so that the first lifting device 24 can control the lifting and lowering of the mounting plate 25, thereby driving the first pressure roller 22 to lift and lower; the slide rail 26 is set on the frame 21, and the mounting plate 25 is slidably connected to the slide rail 26, so that the mounting plate 25 can lift and lower within the trajectory defined by the slide rail 26.

[0062] For example, in some embodiments, such as Figure 5 As shown, the first lifting device 24 includes a displacement sensor 27, which is configured to detect the lifting distance of the first lifting end 24A. For example, the position of the second pressure roller 23 is fixed. By detecting the lifting distance through the displacement sensor 27, the gap between the first pressure roller 22 and the second pressure roller 23 can be obtained, which helps to achieve feedback adjustment. For example, the first lifting end 24A can be controlled to continue lifting based on the detection data of the displacement sensor 27, so as to achieve a preset gap between the first pressure roller 22 and the second pressure roller 23, thereby providing a preset pressing force and controlling the output slab to reach a preset thickness.

[0063] For example, the displacement sensor 27 can be a displacement sensor of various forms, such as an inductive displacement sensor or a capacitive displacement sensor, and the embodiments disclosed herein do not specifically limit this.

[0064] For example, in some embodiments, such as Figure 5 As shown, the pressure roller assembly 20 also includes a limiting device 28, which is disposed on the side of the slide rail 26 near the second pressure roller 23, that is... Figure 5 The lower side of the roller is configured to limit the minimum gap between the first roller and the second roller. For example, the limiting device 28 can also be a limiting block or other structure. When the mounting plate 25 moves to the limiting device 28, the limiting device 28 can lock the mounting plate 25, preventing the mounting plate 25 from moving further. This can avoid problems such as damage to the pressure roller and machine caused by the first roller and the second roller being too close and the relative force between them being too large.

[0065] For example, in some embodiments, such as Figure 5As shown, the roller device 20 further comprises a first roller position monitoring device 29, which is arranged on the side of the first roller 22 away from the second roller 23 and configured to monitor the displacement of the first roller 22 on the side away from the second roller 23. For example, the first roller 22 has a safe displacement, and beyond this displacement, the first roller 22 can cause damage to the device. By monitoring the displacement of the first roller 22 on the side away from the second roller 23 through the first roller position monitoring device 29, an alarm can be given when the first roller 22 is about to reach the safe displacement, and the movement of the first roller 22 is stopped to ensure the safety of the device.

[0066] For example, in some examples, the first roller position monitoring device 29 can adopt a photoelectric sensor, which is triggered when the first roller 22 exceeds the safe displacement, thereby achieving monitoring of the first roller 22.

[0067] For example, in some embodiments, as Figure 5 As shown, the roller device 20 further comprises a device for speed changing of the first roller 22. For example, the roller device 20 comprises a first speed reducer fixing frame 201, a first speed reducer 202, and a second lifting device 203; the first speed reducer fixing frame 201 is arranged on the mounting plate 25 so as to be movable with the mounting plate 25, thereby being synchronized with the movement of the first roller 22; the first speed reducer 202 is arranged on the first speed reducer fixing frame 201 and configured to be connected with the first roller 22, for example, through a shaft coupling, thereby changing the speed of the first roller 22; the second lifting device 203 is arranged on the frame 21 and comprises a second lifting end 203A; the second lifting device 203 can control the second lifting end 203A to extend and retract, that is, in Figure 5 the second lifting end 203A can be lifted and lowered, and the first speed reducer fixing frame 201 is connected to the second lifting end 203A, so that the second lifting end 203A can provide a certain support force to the first speed reducer fixing frame 201, thereby maintaining the installation balance of the first speed reducer fixing frame 201.

[0068] For example, the first lifting device 24 and the second lifting device 203 are synchronized in movement, thereby providing a balanced support force to the first speed reducer fixing frame 201, so as to ensure the stability of the first speed reducer fixing frame 201. For example, in some examples, the first lifting device 24 and the second lifting device 203 can adopt devices that can be controlled to extend and retract, such as oil cylinders and air cylinders. For example, in one example, as the main device for controlling the lifting of the mounting plate, the first lifting device 24 can adopt an oil cylinder; the second lifting end 203A can adopt an air cylinder to achieve counterweight, thereby maintaining the installation balance of the first speed reducer fixing frame 201 and assisting the first lifting device 24 to complete the lifting work.

[0069] For example, in some embodiments, the slab processing equipment further comprises an encoder and a controller; the encoder is configured to obtain the rotating speed of the first compression roller 22; the controller is configured to adjust the rotating speed of the first speed reducer 202 according to the rotating speed of the first compression roller 22. In this way, the rotating speed synchronous adjustment control can be realized by the accurate selection of the speed reducer and the addition of the encoder, which matches the production line operation.

[0070] In the embodiments of the present disclosure, the accurate regulation of the pressure, distance and speed of the first compression roller 22 and the second compression roller 23 can be realized by the first lifting device 24 and the speed reducer and the like.

[0071] For example, in some embodiments, the compression roller device 20 further comprises a device for speed changing of the second compression roller 23. For example, as shown in Figure 5 the compression roller device 20 comprises a second speed reducer fixing frame 204 and a second speed reducer 205, and the second speed reducer 205 is connected to the second compression roller 23 through a shaft coupling 206. For example, the second speed reducer fixing frame 204 and the second speed reducer 205 are fixedly arranged, for example, fixedly arranged on the vertical plate 211 (to be described later). For example, the second compression roller 23 and the second speed reducer 205 can also be controlled by an encoder and a controller, for example, the control of the encoder and the controller on the second compression roller 23 and the second speed reducer 205 is synchronous with the control on the first compression roller 22 and the first speed reducer 202, so as to match the rotating speeds of the first compression roller 22 and the second compression roller 23.

[0072] For example, in some embodiments, as shown in Figure 5 the frame 21 of the compression roller device 20 comprises a vertical plate 211, a pull rod 212, a support beam 213, a foot plate assembly 214 and the like, two vertical plates 211 are oppositely arranged on the two sides of the first compression roller 22 and the second compression roller 23 along the axial direction, and are configured to support the first compression roller 22 and the second compression roller 23 and the like; the support beam 213 is connected between the two vertical plates 211 to maintain the relative distance of the two vertical plates 211; a plurality of pull rods 212 are cross arranged between the two vertical plates 211 to maintain the parallel arrangement and stability of the two vertical plates 211; and the foot plate assembly 214 is configured to be fixed to the ground or the arrangement plane of the compression roller device 20 to realize the fixed arrangement of the frame 21.

[0073] For example, in some embodiments, the slab processing equipment further comprises more functional devices, for example, Figure 8 a structural schematic diagram of still another part of the slab processing equipment provided by at least one embodiment of the present disclosure is shown; as shown in Figure 8 in some embodiments, upstream of the compression roller device 20, the slab processing equipment can further comprise a hopper 51, a buffer bin 52, a fiber bin 53, a discharging hopper 54, a paving machine 55, a leveling device 56, a sweeping device 57, an electronic scale 58 and the like.

[0074] For example, the hopper 51 can swing, the material (for example, the granular material for forming the board blank, such as wood chips, etc.) is added from above the hopper 51, the hopper 51 swings back and forth to achieve uniform lateral paving of the material, the buffer bin 52 buffers the material with a higher drop, and the hopper 51 and the buffer bin 52 cooperate to make the material fall into the fiber bin 53 uniformly laterally, for example, the fiber bin 53 has an electronic scale, according to the requirements of the board blank, the material is metered and conveyed to the paving machine 55, the paving machine 55 uniformly paves the material laterally and longitudinally onto the conveying belt of the production line, and then the board blank is leveled by the leveling device 56 and the sweeping device 57, and the electronic scale 58 detects the mass of the board blank.

[0075] For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc. Figure 1 For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc.

[0076] For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc. Figure 8 For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc.

[0077] For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc. Figure 4 For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc.

[0078] For example, as shown in FIG. 1, upstream of the press roller device 20, the board blank processing equipment can further include a board blank saw 61, a magnet device 62, a metal detector 63, a movable trolley 64, and a recycling device 65, etc. Figure 4As shown, the board blank after secondary compression by the compression roller device 20 enters the press device 30 for continuous pressing to make the board blank close to the finished product, and then the board blank output by the press device 30 is transported to the cutting device 72 through the transition platform 71, the cutting device 72 including a flying saw or other cutting equipment for cutting the board blank according to the output requirements of the board to form the final finished product and output the finished product.

[0079] The board blank processing equipment and the process flow provided by the embodiments of the present disclosure can be used for the preparation of medium density fiberboard (MDF), for example, ultra-thin fiberboard board blank, and of course can also be used for the preparation of other artificial boards. By adding a post-compression device, i.e., the compression roller device 20, at the outlet end of the preheating device 10, the heated board blank can be subjected to high-pressure treatment, thereby improving the density and strength of the board blank and improving the internal quality of the board blank (for example, the ultra-thin fiberboard board blank), such as crushing or thinning the glue lumps, hard blocks and other substances in the board blank to avoid damage to the steel belt of the subsequent continuous press; at the same time, the thickness of the compressed board blank is thinner, for example, the compression rate is greater than 30%, thereby reducing the inlet wedge angle of the continuous press, which is beneficial to the entry of the board blank into the inlet of the continuous press at a high speed, thereby improving the safety and production efficiency of the continuous press operation, and avoiding defects such as back spray and board surface crack at the inlet of the continuous press, and improving the quality of the finally formed board blank.

[0080] The following points need to be explained:

[0081] (1) The drawings of the embodiments of the present disclosure only involve the structures involved in the embodiments of the present disclosure, and other structures can be referred to the general design.

[0082] (2) For the sake of clarity, the thickness of a layer or region is exaggerated or reduced in the drawings used to describe the embodiments of the present disclosure, that is, these drawings are not drawn according to the actual proportion.

[0083] (3) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0084] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A slab processing apparatus, comprising: a preheating device configured to heat treat a slab, and a press roll device disposed at an outlet of the preheating device and configured to compress the slab output from the preheating device; wherein the press roll device comprises: a frame, a first press roll and a second press roll disposed on the frame, wherein at least one of the first press roll and the second press roll is movable to adjust a gap between the first press roll and the second press roll; the first press roll comprises a first roll barrel and the second press roll comprises a second roll barrel, a diameter of the first roll barrel and / or the second roll barrel is 500-800 mm, a first lifting device disposed on the frame, comprising a first lifting end and a displacement sensor configured to detect a lifting distance of the first lifting end, a mounting plate connected to the first lifting end, wherein the first press roll is connected to the mounting plate, and a slide rail disposed on the frame, wherein the mounting plate is slidingly connected to the slide rail.

2. The slab processing apparatus according to claim 1, wherein The preheating device configured to heat treat a slab, comprising: the preheating device is configured to use a mixture of steam and hot air to wet heat treat the slab.

3. The slab processing apparatus according to claim 2, wherein The preheating device comprises: a preheating plate assembly comprising at least one preheating plate configured to preheat treat the slab, a hot plate assembly disposed downstream of the preheating plate assembly, comprising at least one hot plate and at least one hot pipe conveying the mixture, configured to wet heat treat the slab.

4. The slab processing apparatus according to claim 3, wherein The hot plate assembly comprises: a first hot plate and a second hot plate disposed oppositely, a first hot pipe disposed on a side of the first hot plate away from the second hot plate, configured to blow air to the first hot plate, a second hot pipe disposed on a side of the second hot plate away from the first hot plate, configured to direct air away from the second hot plate, wherein a slab conveying device is disposed between the first hot plate and the second hot plate, configured to convey the slab.

5. The slab processing apparatus according to claim 4, wherein The number of hot plate assemblies is multiple, on the same side of the slab conveying device, the first hot pipes and the second hot pipes of the multiple hot plate assemblies are arranged alternately.

6. The slab processing apparatus according to claim 1 or 2, wherein Further comprising: a press device disposed downstream of the press roll device and configured to press the slab output from the press roll device.

7. The slab processing apparatus according to claim 1 or 2, wherein Further comprising: a pre-press device disposed upstream of the preheating device and configured to pre-press treat the slab.

8. The slab processing apparatus according to claim 7, wherein The press roll device has a first compression speed for the slab, and the pre-press device has a second compression speed for the slab, the first compression speed is greater than the second compression speed.

9. The slab processing apparatus according to claim 1, wherein The press roll device further comprises: a limiting device disposed on a side of the slide rail close to the second press roll, configured to limit a minimum gap of the first roll barrel and the second roll barrel.

10. The slab processing apparatus according to claim 1, wherein The press roll device further comprises: a first press roll limiting monitoring device disposed on a side of the first press roll away from the second press roll, configured to monitor a displacement of the first press roll on the side away from the second press roll.

11. The slab processing apparatus according to claim 1, wherein The press roll device further comprises: a first speed reducer fixing frame disposed on the mounting plate, A first speed reducer is arranged on the first speed reducer fixing frame and configured to be connected with the first compression roller, and A second lifting device is arranged on the frame and includes a second lifting end, and the first speed reducer fixing frame is connected to the second lifting end.

12. The slab processing apparatus according to claim 11, wherein Further comprising: An encoder configured to acquire the rotating speed of the first compression roller, and A controller configured to adjust the rotating speed of the first speed reducer according to the rotating speed of the first compression roller.

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