Intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics

Abstract

The application discloses an intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics, which comprises the following steps: providing gluing pressure and maintaining long-time pressure maintaining state for different parts of the wood plate composed of multiple single boards which have been coated with glue and are to be glued by multiple continuous gluing and pressure maintaining mechanisms; the locking motor is provided with a locking force sensing system, and the locking sleeve installed on the locking motor shaft cooperates with the bolt pull rod to glue and lock the wood structure, so that the locking force reaches the elastic yield stress range that can be borne by the wood structure material; the other end of the bolt pull rod cooperates with the thrust ball bearing, the thrust ball bearing interacts with the high-toughness pad block installed on the pressure seat, so that the wood structure gluing process can be maintained in the elastic yield stress range at all times, and plastic deformation of the wood does not occur, thereby ensuring the uniformity of the internal strength of the wood structure. The application is based on different wood characteristics, and the gluing and pressure maintaining are performed according to the elastic yield stress of different wood, so that manual intervention in the wood structure gluing process is avoided, and the stability of the glued wood structure quality can be greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plywood press, in particular to an intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics. BACKGROUND

[0002] The traditional plywood press currently comprises a tension bar, a wedge-shaped pin, a pressing seat and a supporting column. The tension bar penetrates the front and rear gaps of the pressing seat and the supporting column, the wedge-shaped pin is inserted into the hole of the pressing bar, and the wedge-shaped pin abuts against the side surface of the pressing seat. The gluing and pressure maintaining method based on the traditional plywood press is as follows: the tension bar is pulled to drive the wedge-shaped pin to move, the wedge-shaped pin pushes the pressing seat, the pressing seat further presses the multiple single boards to be glued, and the multiple single boards to be glued are clamped between the pressing seat and the supporting column. In the use process, it is found that due to the influences of the thickness of the single board, the moisture content of the single board, the surface roughness of the single board and the unit pressure, the traditional gluing and pressure maintaining method cannot provide suitable and continuous pressure for the single boards of different materials and the special-shaped beams with different bending degrees. That is, the wedge-shaped pin is inserted into the hole of the pressing bar, the wedge-shaped pin is inserted too tightly, which may cause excessive pressure and plastic deformation of the single board, the wedge-shaped pin is inserted too loosely, which may cause incomplete gluing, and the wedge-shaped pin is easily squeezed out of the hole of the tension bar during the gluing and forming process of the single board (i.e. when the tension bar is pulled), which needs to be inserted again. The quality of the wood structure beam is uneven, and there are many human intervention links, which is low in efficiency and yield. The present application provides an intelligent gluing and pressure maintaining device and method based on the material characteristics of the gluing object. SUMMARY

[0003] The present application provides an intelligent wood structure beam gluing and pressure maintaining device and method based on the material characteristics of the wood material to solve the above problems of the prior art. The method can provide suitable and continuous pressure for multiple single boards to be glued. According to the customer's needs, the method can gradually make each part of the multiple single boards reach the desired shape of the wood structure beam. After the multiple single boards are continuously pressed for a period of time, the multiple single boards are glued and a wood structure beam with a certain shape is formed. The method can avoid plastic deformation of the wood structure beam and improve the uniformity of the internal stress of the wood structure beam.

[0004] To achieve the above technical purposes, the technical scheme adopted by the present application is as follows:

[0005] An intelligent wood structure beam gluing and pressure maintaining method based on the material characteristics of the wood material, which comprises the following steps: multiple continuous gluing and pressure maintaining mechanisms A are used to provide continuous pressure for the gluing parts of the wood plate 5 composed of multiple single boards coated with glue and to be glued; and the multiple single boards are gradually glued into a wood structure beam, and the multiple single boards are continuously pressed for a period of time until the gluing is completed.

[0006] Each of the continuous gluing pressure maintaining mechanisms comprises a support base 1, a bolt pull rod 2, a cushion block 3, a pressing seat 4, a vertical holder 6, a movable threaded top plate 7, a locking sleeve 11, two or more guide columns 8 and a lock nut 9; the bolt pull rod 2 has a threaded part which is screwed with the movable threaded top plate 7 and the lock nut 9; the vertical holder 6 is fixed with the guide columns 8 on the end face of the side close to the movable threaded top plate 7, and the movable threaded top plate 7 is axially slidably arranged on the guide columns 8 on the bolt pull rod 2; one end of the bolt pull rod 2 is provided with a torsion end which is matched with the locking sleeve 11;

[0007] The pressure applying system B comprises a motor 13 and a torsion AI calculation module 14, and the head of the rotating shaft of the motor 13 is provided with the locking sleeve 11,

[0008] Specifically, the method comprises the following steps:

[0009] Step 1: the plurality of continuous gluing pressure maintaining mechanisms A are operated as follows:

[0010] Step 1.1: the positions of the vertical holders 6 are adjusted so that the vertical holders 6 in the plurality of continuous gluing pressure maintaining mechanisms A are arranged according to the shape of the structural timber beam as required; after the positions of the vertical holders 6 are adjusted, the positions are fixed and cannot be moved;

[0011] Step 1.2: one end of the bolt pull rod 2 is coaxially assembled with the thrust ball bearing and is in close contact with the thrust ball bearing, and then the other end of the bolt pull rod 2 is sequentially threaded through the cushion block 3, the pressing seat 4, the vertical holder 6, the movable threaded top plate 7 and the lock nut 9, and the threaded part of the bolt pull rod 2 is screwed with the movable threaded top plate 7 and the lock nut 9; the movable threaded top plate 7 is in close contact with the end face of the vertical holder 6 under the guidance of the guide columns 8 by rotating the bolt pull rod 2;

[0012] Step 1.3: the wood plate 5 is arranged between the pressing seat 4 and the vertical holder 6 in the plurality of continuous gluing pressure maintaining mechanisms A;

[0013] Step 2: the pressure applying system B is moved so that the locking sleeve 11 is coaxially matched with the torsion end of the first continuous gluing pressure maintaining mechanism arranged in the first position in the plurality of continuous gluing pressure maintaining mechanisms A; the motor 13 is started, the bolt pull rod 2 is rotated by the locking sleeve 11, the force between the movable threaded top plate 7 and the end face of the vertical holder 6 is gradually increased at this time, the torsion AI calculation module 14 calculates the tension of the bolt pull rod 2 according to the torque of the motor 13 in real time, and the stress of the wood plate 5 is calculated in combination with the contact area of the wood plate 5 and the vertical holder 6; the motor 13 is immediately stopped when the stress of the wood plate 5 reaches the wood elastic yield stress interval. The single boards in the timber beam are made of the same kind of wood. The wood elastic yield stress refers to the elastic yield stress of the wood which is the same as the single board.

[0014] Step 3: Turn the check nut 9 so that the check nut 9 is pressed on the movable threaded top plate 7, and the movable threaded top plate 7 is limited;

[0015] Step 4: According to the arrangement order of each continuous gluing pressure maintaining mechanism A, the second, third, fourth, and last continuous gluing pressure maintaining mechanism are sequentially operated according to steps 2 and 3, and the wood plate 5 is locked.

[0016] As a further improved technical solution of the application, the plurality of gluing pressure maintaining mechanisms A can be arranged in a straight line, an arc, or an "S" curve. When arranged in a straight line, the pressure maintaining gluing straight wood structure beam is obtained. When arranged in an arc, the pressure maintaining gluing arc-shaped wood structure beam is obtained. When arranged in an "S" shape, the pressure maintaining gluing "S" shaped special-shaped beam is obtained.

[0017] As a further improved technical solution of the application,

[0018] Each continuous gluing pressure maintaining mechanism further comprises a rubber pad fixed on one side of the pressing seat 4 in contact with the wood plate 5, and the bolt pull rod 2 passes through the rubber pad.

[0019] As a further improved technical solution of the application, the spacer 3 is connected to the end face of the pressing seat 4 through a counterbore and a countersunk bolt. A thrust ball bearing is arranged between the spacer 3 and one end of the bolt pull rod 2, so that the bolt pull rod does not drive the spacer 3 and the pressing seat 4 to rotate when rotating, and at the same time, the thrust ball bearing, the spacer 3, and the pressing seat 4 only bear the axial force of the bolt pull rod 2.

[0020] As a further improved technical solution of the application, the spacer 3 is a high-toughness spacer 3 made of resin material or high-toughness rubber material. The high-toughness spacer 3 can compensate for the deformation of the wood plate 5 during the entire gluing pressure maintaining time, so that the stress of the wood plate 5 is within the elastic yield stress range of wood, and the wood plate 5 does not plastically deform.

[0021] As a further improved technical solution of the application, the pressure applying system B further comprises a secondary slide rail 15, a secondary slide table 16, a primary slide table 17, and a primary slide rail 18. The primary slide table 17 is slidably arranged on the primary slide rail 18. The secondary slide rail 15 is fixed on the primary slide table 17. The secondary slide table 16 is slidably arranged on the secondary slide rail 15. The primary slide rail 18 is perpendicular to the secondary slide rail 15. The motor 13 is directly arranged on the secondary slide table 16, or the motor 13 is arranged on the end mechanical arm of the multi-degree-of-freedom mechanical arm, and the multi-degree-of-freedom mechanical arm is arranged on the secondary slide table 16.

[0022] As a further improved technical scheme of the present application, the pressure applying system B further comprises a first positioning probe 12 arranged in the locking sleeve 11 and a second positioning probe 10 arranged at the torsion end, the first positioning probe 12 and the second positioning probe 10 transmit displacement signals to each other, thereby ensuring accurate alignment of the locking sleeve 11 and the bolt pull rod 2.

[0023] As a further improved technical scheme of the present application, the torsion AI calculation module 14 is embedded with a database of elastic yield stress intervals of different wood materials obtained through experimental tests.

[0024] As a further improved technical scheme of the present application, the wood board 5 is multiple and symmetrical above and below the horizontal plane where the bolt pull rod 2 axis is located.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The intelligent wood structure beam gluing and pressure maintaining device and method based on wood material characteristics can adjust the locking of the bolt pull rod according to the elastic deformation of the corresponding wood material when gluing wood structure beams of different shapes, adjust the locking of the bolt pull rod according to the elastic deformation of the corresponding wood material when gluing wood structure beams of different shapes, and form a database of elastic yield stress intervals of different wood materials, so that the pressure seat provides appropriate pressure for the wood structure beam gluing plate forming, reduces the defective rate of the finished product, and improves the internal stress uniformity of the wood structure beam.

[0027] On the basis of the prior art, the wedge-shaped pin is replaced by a high-toughness pad, which will deform when subjected to pressure due to its material properties. This deformation is converted into uniform and gradually increasing support force on the pressure seat, slowly applying pressure to the wood board. This further prevents plastic deformation of the wood structure beam caused by rapid application of excessive pressure. Finally, the position of the high-toughness pad and the pressure seat is locked by the pressure applying system and the lock nut, and the pressure tends to be stable. At this moment, the support force of the high-toughness pad is sufficient to support the pressure seat to provide effective gluing pressure for the wood structure beam, without being too large to cause plastic deformation of the wood structure beam, ensuring the gluing quality of the wood structure beam and making the internal stress of the wood structure beam uniform as a whole, further improving its mechanical properties. When the bolt pull rod is rotated, the high-toughness pad installed on the pressure seat will not be squeezed out of the bolt pull rod. After the bolt pull rod is stopped, the lock nut locks the movable threaded top plate, limiting the position of the movable threaded top plate, ensuring uniform distribution and non-decay of the pressure.

[0028] The present application can form a high-toughness pad size dataset through experiments for the gluing and pressure maintaining of wood structure beams made of different wood materials, which can ensure high-quality gluing manufacturing of wood structure beams made of different wood materials.

[0029] The specific size and material properties of the high-toughness pad 3 are determined by the wood material properties of the wood board 5 to be glued, and this correspondence has been determined through various wood gluing experiments.

[0030] The application is equipped with a torsion AI calculation module of bolt pull rod locking force and multi-wood material elastic yield stress interval database integration on the motor, the torsion AI calculation module detects the pressure value of the wood structure beam in real time, the pressure is transmitted to the rotating motor in real time, when the wood material elastic yield stress interval is reached, the motor stops rotating, this step is very key, cooperates with the high toughness pad, effectively prevents the plastic deformation of the wood structure beam caused by excessive pressure, and installs the lock nut on the bolt pull rod to limit the movable screw top plate, so that the wood structure beam provides suitable and continuous average pressure.

[0031] The pressing seat of the application is equipped with rubber pads, which compensate for the size error between single wood boards and realize complete gluing between wood boards.

[0032] In addition to gluing double-layer wood structure beams, the application can also glue multi-layer wood structure beams to improve the yield.

[0033] In addition to using a motor to drive locking, the application can also use a multi-degree-of-freedom mechanical arm to position and lock the bolt pull rod, especially in the manufacture of arc-shaped wood structure beams or S-shaped wood structure beams, which can greatly improve the locking efficiency. Of course, at this time, the motor on the end mechanical arm of the multi-degree-of-freedom mechanical arm drives the bolt pull rod to rotate to realize the locking of the wood board.

[0034] When the continuous gluing pressure maintaining mechanism is working, the position of the vertical holder is adjusted so that the vertical holders in the plurality of continuous gluing pressure maintaining mechanisms are arranged in a certain line segment pattern, which can be a straight line, an arc or an "S" curve. The position of the vertical holder is fixed after being adjusted. The end of the multi-layer board (wood board) coated with glue is first fixed to the first continuous gluing pressure maintaining mechanism in the first position. The bolt pull rod is coaxially assembled with the thrust ball bearing and is in close contact with the thrust ball bearing. Then, the other end of the bolt pull rod passes through the high-toughness pad, the pressure seat, the multi-layer board, the vertical holder, the movable threaded top plate and the locking nut in sequence. The bolt pull rod is rotated to make the movable threaded top plate in close contact with the end surface of the vertical holder under the guidance of the guide column. The pressure applying system is started. The rotating shaft head of the motor on the pressure applying system is provided with a locking sleeve. The locking sleeve is internally provided with a first positioning probe. The first positioning probe is automatically aligned with a second positioning probe to realize the coaxial opposition of the locking sleeve and the bolt pull rod. The motor drives the locking sleeve and the end (torsion end) of the bolt pull rod to rotate under the action of the sliding table. At this time, the force between the movable threaded top plate and the end surface of the vertical holder is getting larger and larger. A torsion AI calculation module is arranged on the motor. The torsion AI calculation module can convert and display the tension of the bolt. When the tension reaches the wood elastic yield stress interval, the rotation of the motor is immediately terminated. The lock nut is rotated to make the lock nut abut against the movable threaded top plate to limit the movable threaded top plate. The above steps are repeated in sequence for the locking process of the multi-layer board by the second, third, fourth to Nth continuous gluing pressure maintaining mechanisms. The gluing can be completed after a certain pressure maintaining time.

[0035] The torsion AI calculation module 14 imports the wood elastic yield stress interval in advance. When the tension of the bolt pull rod 2 is placed in the wood elastic yield stress interval, the motor 13 is controlled to stop rotating. At this time, the rotating lock nut 9 limits the movable threaded top plate 7. The movable threaded top plate 7 and the lock nut 9 form a double-nut locking structure with the bolt, which plays a role in preventing the bolt pull rod 2 from loosening. The torsion AI calculation module 14 ensures that the tension of the bolt pull rod 2 is placed in the wood elastic yield stress interval. The high-toughness pad 3 also has elastic strain during the pressure process. The mutual dynamic force makes the wood board 5 always be in the elastic yield strain interval without plastic deformation. The first, second, third to Nth continuous gluing pressure maintaining mechanisms are locked in sequence, which aims to eliminate the excess stress on the glue layer and ensure that the wood gluing surface is completely attached.

[0036] The pressure seat 4 is fixed with a rubber pad on the side in contact with the wood board 5, which is used to compensate for the dimensional error of the single wood board 5 in the gluing pressure direction, so that the multi-layer boards 5 can be closely attached during the gluing process.

[0037] In summary, this invention can solve the problem that traditional glued pressure application methods for timber beams are unable to provide suitable and continuous uniform pressure for timber beams made of different wood materials, thereby achieving the goal of preventing plastic deformation of timber beams and improving the uniformity of internal stress in timber beams. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0039] Figure 2 This is a diagram showing the working state of a single continuous gluing and pressure-holding mechanism and pressure application system for gluing and pressurizing timber beams in this invention.

[0040] Figure 3 This is a schematic diagram of the positioning probe of the pressure application system of the present invention.

[0041] Figure 4 This is a schematic diagram of the pressure seat structure.

[0042] Figure 5 This is a schematic diagram showing the shape and dimensions of a high-strength, tough pad.

[0043] Figure 6 This is a diagram showing the working state of the multiple continuous gluing and pressure-holding mechanisms of the present invention for gluing and pressure-holding curved wooden beams.

[0044] Figure 7 This diagram illustrates the working state of the multiple continuous gluing and pressure-holding mechanisms of the present invention for gluing and pressure-holding "S"-shaped wooden beams.

[0045] Figure 8 This is a diagram showing the stress changes of wood-based panels during the pressure gluing process.

[0046] Figure 9 This is a diagram showing the state of a single continuous gluing and pressure-holding mechanism during the gluing and pressure-holding operation of an arc-shaped wooden beam. Detailed Implementation

[0047] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0048] like Figure 1 As shown, this embodiment provides an intelligent gluing and pressure-holding device for timber structure beams based on the properties of wood, including multiple continuous gluing and pressure-holding mechanisms A and a pressure application system B. The arrangement of the multiple continuous gluing and pressure-holding mechanisms A is not fixed.

[0049] like Figure 2 As shown, each of the multiple continuous bonding and pressure holding mechanisms A includes a support base 1, a bolt tie rod 2, a high-toughness pad 3, a pressure seat 4, a vertical retainer 6, a movable threaded top plate 7, a guide post 8, an anti-loosening nut 9, and a second positioning probe 10.

[0050] likeFigure 4 As shown, the pressure seat 4 comprises a pressure seat body part 4.1 and a rubber pad 4.2, which can ensure seamless contact between the individual boards of each wood board during the gluing and pressing process, and compensate for the dimensional errors between the individual boards of the wood board, thereby improving the gluing quality.

[0051] The rotating shaft head of the motor 13 of the pressing system B is provided with a locking sleeve 11, and the first positioning probe 12 is arranged inside the locking sleeve 11. Figure 3 As shown, the first positioning probe 12 is automatically aligned with the second positioning probe 10, and the motor 13 drives the locking sleeve 11 to cooperate with the end of the bolt pull rod 2 under the action of the sliding table and rotates, at which time the force between the movable threaded top plate 7 and the end surface of the vertical retaining frame 6 becomes larger and larger, and the motor 13 is provided with a torsion AI calculation module 14, which can convert and display the tension of the bolt pull rod 2, and when the tension reaches the elastic yield stress interval of the multi-layer board, the rotation of the motor 13 is immediately terminated.

[0052] The plurality of continuous gluing and pressing mechanisms are used to provide continuous pressure to the gluing parts of the plurality of individual boards to be glued, thereby forming a wood structure beam with a certain shape after gluing.

[0053] In this embodiment, as shown in Figure 1 , Figure 6 and Figure 7 , the plurality of gluing and pressing mechanisms A can be arranged in a straight line, an arc, or an "S" curve. When arranged in a straight line, a straight wood structure beam can be glued and pressed, when arranged in an arc, an arc-shaped wood structure beam can be glued and pressed, and when arranged in an "S" shape, an "S" shaped special-shaped beam can be glued and pressed. No matter it is a straight wood structure beam, an arc-shaped wood structure beam, or an "S" shaped special-shaped beam, the arrangement order of the gluing and pressing mechanisms is followed, i.e., the first gluing and pressing mechanism is locked first, then the second gluing and pressing mechanism is bent and locked, and the third, fourth, and so on to the last, i.e., the Nth (the last one arranged at the end) gluing and pressing mechanism, all repeat the operation order of the second gluing and pressing mechanism.

[0054] In this embodiment, as shown in Figures 1-2 , the first glued wood structure is placed on the supporting base 1, the bolt pull rod 2 passes through the first and second glued wood structures, and the first and second glued wood structures are symmetrical above and below the horizontal plane formed by the bolt pull rod 2. This embodiment is not limited to two glued wood structure beams, but can also be four, six, or even more, and the bolt pull rod 2 passes through the upper and lower wood structure beams to improve the output per unit time.

[0055] In this embodiment, as shown in Figure 2 and Figure 4As shown, the side of the pressing seat 4 in contact with the wood board 5 is fixedly provided with a rubber pad for compensating for the dimensional error of the individual wood board 5 in the gluing pressure direction, so that the wood boards 5 can be closely attached to each other during the gluing process.

[0056] In the embodiment, as shown in Figure 2 and Figure 5 , the high-toughness pad 3 is connected to the end face of the pressing seat 4 through a counterbore and a countersunk bolt, and the high-toughness pad 3 is connected to the flat end of the bolt pull rod 2 through a thrust ball bearing, so that the high-toughness pad 3 and the pressing seat 4 will not rotate when the bolt pull rod 2 rotates, and the thrust ball bearing, the high-toughness pad 3 and the pressing seat 4 only bear the axial force of the bolt pull rod 2. The high-toughness pad 3 can be made of resin material or high-toughness rubber material, so that the entire gluing and pressure maintaining stress range is within the elastic yield range of the wood board 5, and the wood board 5 does not undergo plastic deformation. The specific size and material properties of the high-toughness pad 3 are determined by the wood material properties of the wood board 5 to be glued, and the corresponding relationship has been determined through various wood gluing tests.

[0057] In the embodiment, as shown in Figure 1 , Figure 6 and Figure 7 , the first, second, third, and Nth continuous gluing and pressure maintaining mechanisms are locked one by one, which aims to eliminate excess stress on the glue layer and ensure that the wood board 5 is completely attached.

[0058] In the embodiment, as shown in Figure 2 and Figure 3 , the bolt pull rod 2 is tightened under the joint action of the pressing system B and the movable threaded top plate 7. The pressing system B includes a locking sleeve 11, a motor 13, a first positioning probe 12, a torque AI calculation module 14, a secondary slide rail 15, a secondary slide table 16, a primary slide table 17, and a primary slide rail 18.

[0059] In the embodiment, as shown in Figure 1 and Figure 2 , in the pressing system B, the first positioning probe 12 and the second positioning probe 10 in the gluing and pressure maintaining mechanism transmit displacement signals to each other to ensure accurate positioning of the locking sleeve 11 and the bolt pull rod 2.

[0060] In the embodiment, as shown in Figure 1 and Figure 2 , in the pressing system B, the torque AI calculation module 14 imports the elastic yield stress range of the wood board 5 in advance, and controls the motor 13 to stop rotating when the tension of the bolt pull rod 2 causes the wood stress to reach the elastic yield stress range of the wood board 5. At this time, the rotation of the locking nut 9 is limited to the movable threaded top plate 7.

[0061] In the embodiment, as shown inFigure 1 , Figure 2 and Figure 8 As shown in FIG. 1, FIG. 2, and FIG. 3, in the pressure system B, the torsion AI calculation module 14 integrates a variety of wood elastic yield stress interval databases and a torsion and pressure conversion program. When the wood board pressure reaches the wood elastic yield stress interval as shown in FIG. 4, the motor 13 stops immediately. If the external pressure is too large and exceeds the wood elastic yield stress interval, as shown in FIG. 5, the wood in plastic deformation causes stress attenuation of the entire pressure maintaining system. Figure 8 Figure 8 In the embodiment, as shown in FIG. 6, the torsion AI calculation module 14 ensures that the tension of the bolt pull rod 2 causes the wood board stress to be in the elastic yield stress interval of the wood board 5, and the high-toughness cushion block 3 also has elastic strain during the pressure process. This mutual dynamic force makes the wood board 5 always in the elastic yield strain interval and does not have plastic deformation.

[0062] In the embodiment, as shown in FIG. 7, the torsion AI calculation module 14 ensures that the tension of the bolt pull rod 2 causes the wood board stress to be in the elastic yield stress interval of the wood board 5, and the high-toughness cushion block 3 also has elastic strain during the pressure process. This mutual dynamic force makes the wood board 5 always in the elastic yield strain interval and does not have plastic deformation. Figure 2 In the embodiment, as shown in FIG. 8 and FIG. 9, the movable threaded top plate 7 and the lock nut 9 form a double-nut locking structure with the bolt, which plays a role in preventing the bolt pull rod 2 from loosening.

[0063] Figure 1 In the embodiment, as shown in FIG. 10 and FIG. 11, when a plurality of glue pressure maintaining mechanisms A are arranged in an arc shape or an “S” curve shape or a plurality of layers of wood structures are glued, the motor 13 of the pressure system B is fixed on the end mechanical arm of the multi-degree-of-freedom mechanical arm 19, the multi-degree-of-freedom mechanical arm 19 is arranged on the auxiliary sliding table 16, the auxiliary sliding table 16 is arranged in sliding mode on the auxiliary sliding rail 15, the auxiliary sliding rail 15 is fixed on the main sliding table 17, and the main sliding table 17 is arranged in sliding mode on the main sliding rail 18. Under the action of the sliding rail and the sliding table (including the main sliding rail and the main sliding table, the auxiliary sliding rail and the auxiliary sliding table), the glue pressure maintaining and locking of the special-shaped beam wood structure or the multi-layer high-yield wood structure are facilitated. Figure 2 The embodiment also provides a continuous glue pressure maintaining method based on the characteristics of wood materials. The method provides continuous pressure to the glue layers of a plurality of wood structure beams to be glued. The first glue pressure maintaining mechanism is locked, the second glue pressure maintaining mechanism is bent and locked, the third and fourth glue pressure maintaining mechanisms are operated in the same way as the second glue pressure maintaining mechanism, and the operation is repeated until the wood structure beam is glued and a certain shape is formed.

[0064] Figure 6 The method specifically includes the following steps: Figure 7

[0065]

[0066] The method specifically includes the following steps:

[0067] ​​​​​Step 1: the plurality of continuous glue pressure holding mechanism A is operated as follows:

[0068] Step 1.1: adjust the position of the vertical holder 6, so that the vertical holders 6 in the plurality of continuous glue pressure holding mechanism A are arranged in a certain line segment pattern, which can be a straight line, an arc or an "S" curve; after the position of the vertical holder 6 is adjusted, the position is fixed and does not move;

[0069] Step 1.2: the bolt pull rod 2 is coaxially assembled with the thrust ball bearing and is in close contact with each other, then the other end of the bolt pull rod 2 passes through the high toughness pad 3, the pressure seat 4, the wood plate (multi-layer plate) 5, the vertical holder 6, the movable threaded top plate 7 and the lock nut 9 in turn, the threaded part of the bolt pull rod 2 is in threaded cooperation with the movable threaded top plate 7 and the lock nut 9, and rotating the bolt pull rod 2 makes the movable threaded top plate 7 in close contact with the end surface of the vertical holder 6 under the guidance of the guide column 8;

[0070] Step 1.3: place a plurality of wood plates 5 coated with glue and to be glued between the pressure seat 4 and the vertical holder 6 in the plurality of continuous glue pressure holding mechanism A; the wood plates 5 to be glued are symmetrically arranged above and below the horizontal plane where the bolt pull rod 2 is located;

[0071] Step 2: start the pressure applying system B, the rotating shaft head of the motor 13 on the pressure applying system B is provided with a locking sleeve 11, the locking sleeve 11 is internally provided with a positioning probe 12, the positioning probe 12 automatically aligns with the positioning probe 10, the motor 13 drives the locking sleeve 11 to cooperate with and rotate the end of the bolt pull rod 2 under the action of the sliding table (including the main sliding table and the auxiliary sliding table) or the multi-degree-of-freedom mechanical arm, at this time, the force between the movable threaded top plate 7 and the end surface of the vertical holder 6 becomes larger and larger, the motor 13 is provided with a torsion AI calculation module 14, which can convert and display the tension of the bolt, and when the tension reaches the elastic yield stress interval of the multi-layer plate, the rotation of the motor 13 is immediately terminated;

[0072] Step 3: rotate the lock nut 9 to tighten the movable threaded top plate 7, so as to limit the movable threaded top plate 7;

[0073] Step 4: the locking process of the second, third, fourth and last N continuous glue pressure holding mechanisms for the multi-layer plate is operated in the same way according to steps 2 and 3, and after all the continuous glue pressure holding mechanisms are operated and pressure holding for a certain period of time, a glued wood structure beam with a certain shape is formed. Then the locking nut is loosened and the glued wood structure beam is taken out.

[0074] Of course, the embodiment can also be provided with multiple pressing systems B to realize the tightening of the bolt pull rod 2 in the multiple continuous gluing pressure maintaining mechanisms A, and realize fast operation. When the multiple gluing pressure maintaining mechanisms A are arranged in an arc shape or an "S" curve shape, or simultaneously glue multiple wood structures up and down, the motor 13 of the pressing system B can be arranged on the end mechanical arm of the multiple degree of freedom mechanical arm, the multiple degree of freedom mechanical arm is arranged on the auxiliary sliding table, and under the action of the sliding rail and the sliding table, the gluing pressure maintaining locking of the special-shaped beam wood structure or the multiple high-yield wood structures is facilitated. When gluing a special-shaped beam, in addition to the multiple degree of freedom mechanical arm scheme mentioned in the application, a crane mechanism can also be used as a multiple degree of freedom carrier of the locking power mechanism such as the motor 13.

[0075] The application discloses an intelligent wood structure beam gluing pressure maintaining method based on wood material characteristics, which comprises the following steps: a plurality of continuous gluing pressure maintaining mechanisms are used to provide gluing pressure and maintain long-time pressure maintaining state for different parts of a wood plate composed of a plurality of veneers coated with glue and to be glued; a locking motor is provided with a locking force sensing system, a locking sleeve on a rotating shaft of the locking motor is matched with a bolt pull rod, and the wood structure is glued and locked so that the locking force reaches the elastic yield stress range that can be borne by the wood structure material; the other end of the bolt pull rod is matched with a thrust ball bearing, and the thrust ball bearing and a high-toughness pad block arranged on a pressure seat interact with each other, so that the wood structure gluing process can be maintained in the elastic yield stress range all the time, and plastic deformation of the wood does not occur, thereby ensuring the uniformity of the internal strength of the wood structure. The application is based on different wood material characteristics, and the gluing pressure maintaining is performed according to the elastic yield stress of different wood materials, manual intervention in the wood structure gluing process is avoided, and the stability of the quality of the glued wood structure can be greatly improved.

[0076] The protection scope of the application includes but is not limited to the above embodiments, the protection scope of the application is subject to the claims, and any replacement, deformation and improvement of the application that can be easily thought of by a person skilled in the art falls within the protection scope of the application.

Claims

1. An intelligent wood structure beam gluing pressure maintaining method based on wood material characteristics, characterized in that, The wood board (5) composed of multiple single boards coated with glue and to be glued is provided with continuous pressure on the gluing position by multiple continuous gluing pressure maintaining mechanisms (A); the multiple single boards are gradually glued into a structural beam, and the multiple single boards are continuously maintained for a period of time, and then the gluing of the multiple single boards is completed; Each continuous gluing pressure maintaining mechanism comprises a supporting base (1), a bolt pull rod (2), a cushion block (3), a pressing seat (4), a vertical holder (6), a movable threaded top plate (7), two or more guide columns (8), and a lock nut (9); the bolt pull rod (2) is provided with a threaded portion which is threadedly connected with the movable threaded top plate (7) and the lock nut (9); the vertical holder (6) is fixed with the guide column (8) on the end face of the side close to the movable threaded top plate (7), and the movable threaded top plate (7) is axially slidably arranged on the guide column (8) on the bolt pull rod (2); one end of the bolt pull rod (2) is provided with a torsion end which is matched with the lock sleeve (11); The pressure applying system (B) comprises a motor (13) and a torsion AI calculation module (14), the head of the rotating shaft of the motor (13) is provided with the lock sleeve (11), and the torsion AI calculation module (14) is embedded with a database of the elastic yield stress interval of different wood materials obtained through test; Specifically, the method comprises the following steps: Step 1: the multiple continuous gluing pressure maintaining mechanisms (A) are operated as follows: Step 1.1: the positions of the vertical holders (6) are adjusted so that the vertical holders (6) in the multiple continuous gluing pressure maintaining mechanisms (A) are arranged according to the shape of the structural beam as required; after the positions of the vertical holders (6) are adjusted, the positions are fixed and cannot be moved; Step 1.2: one end of the bolt pull rod (2) is coaxially assembled with the thrust ball bearing and is in close contact with the thrust ball bearing, then the other end of the bolt pull rod (2) is sequentially threaded through the cushion block (3), the pressing seat (4), the vertical holder (6), the movable threaded top plate (7) and the lock nut (9), and the threaded portion of the bolt pull rod (2) is threadedly connected with the movable threaded top plate (7) and the lock nut (9); the bolt pull rod (2) is rotated so that the movable threaded top plate (7) is in close contact with the end face of the vertical holder (6) under the guidance of the guide column (8); Step 1.3: the wood board (5) is placed between the pressing seats (4) and the vertical holders (6) in the multiple continuous gluing pressure maintaining mechanisms (A); Step 2: the pressure applying system (B) is moved so that the lock sleeve (11) is coaxially matched with the torsion end of the first continuous gluing pressure maintaining mechanism arranged in the first position in the multiple continuous gluing pressure maintaining mechanisms (A); the motor (13) is started, the bolt pull rod (2) is rotated through the lock sleeve (11), and the force between the movable threaded top plate (7) and the end face of the vertical holder (6) becomes larger and larger; the torsion AI calculation module (14) calculates the tension of the bolt pull rod (2) according to the torque of the motor (13) in real time, and calculates the stress of the wood board (5) in combination with the contact area of the wood board (5) and the vertical holder (6); when the stress of the wood board (5) reaches the elastic yield stress interval of the wood, the motor is immediately stopped. Step 3: Turn the check nut (9) to press the check nut (9) on the movable threaded top plate (7) and limit the movable threaded top plate (7); Step 4: According to the arrangement order of each continuous gluing and pressing mechanism in the plurality of continuous gluing and pressing mechanisms (A), sequentially operate the second, third, fourth, and last continuous gluing and pressing mechanism arranged at the end according to steps 2 and 3, and realize the locking of the wood board (5).

2. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The plurality of gluing and pressing mechanisms (A) can be arranged in a straight line, an arc, or an "S" curve. When arranged in a straight line, a straight wood structure beam is pressed and glued; when arranged in an arc, an arc-shaped wood structure beam is pressed and glued; and when arranged in an "S" shape, an "S" shaped special-shaped beam is pressed and glued.

3. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, Each continuous gluing and pressing mechanism further comprises a rubber pad fixed to the side of the pressure seat (4) in contact with the wood board (5), and the bolt pull rod (2) passes through the rubber pad.

4. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The spacer block (3) is connected to the end face of the pressure seat (4) by a counterbore and a countersunk head bolt. A thrust ball bearing is provided between the spacer block (3) and one end of the bolt pull rod (2), so that the bolt pull rod does not rotate the spacer block (3) and the pressure seat (4) when rotating, and the thrust ball bearing, the spacer block (3), and the pressure seat (4) only bear the axial force of the bolt pull rod (2).

5. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The spacer block (3) is made of a high-toughness material such as resin or high-toughness rubber. During the pressing process, the high-toughness spacer block (3) undergoes elastic strain, and the high-toughness spacer block (3) can compensate for the deformation of the wood board (5) during the entire gluing and pressing time, so that the stress of the wood board (5) is within the elastic yield stress range of wood, and the wood board (5) does not undergo plastic deformation.

6. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The pressure applying system (B) further comprises a secondary slide rail (15), a secondary slide table (16), a primary slide table (17), and a primary slide rail (18). The primary slide table (17) is slidably arranged on the primary slide rail (18), the secondary slide rail (15) is fixed on the primary slide table (17), the secondary slide table (16) is slidably arranged on the secondary slide rail (15), and the primary slide rail (18) is perpendicular to the secondary slide rail (15). The motor (13) is directly arranged on the secondary slide table (16), or the motor (13) is arranged on the end mechanical arm of the multi-degree-of-freedom mechanical arm, and the multi-degree-of-freedom mechanical arm is arranged on the secondary slide table (16).

7. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The pressure applying system (B) further comprises a first positioning probe (12) arranged in the locking sleeve (11) and a second positioning probe (10) arranged at the torsion end. The first positioning probe (12) and the second positioning probe (10) transmit displacement signals to each other to ensure accurate alignment of the locking sleeve (11) and the bolt pull rod (2).

8. The intelligent wood structure beam gluing and pressure maintaining method based on wood material characteristics according to claim 1, characterized in that, The wood board (5) has a plurality of wood boards arranged symmetrically above and below the horizontal plane where the bolt pull rod (2) axis is located.

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