A smart veneer cutting machine and its adjustment system based on log size control.

Abstract

This invention discloses an intelligent veneer lathe and its adjustment system based on log size control and adjustment, relating to the field of wood processing technology. It includes a blade holder and a double-roller holder, with the log placed between them for veneer lathe lathe. A veneer blade holder and a pressure roller are arranged on the outer side of the blade holder. The invention controls the distance between the double-roller holder and the pressure roller through a feed adjustment mechanism, adjusting the horizontal movement of the pressure roller. It also controls the height of the blade holder through a rotation angle adjustment mechanism, adjusting the vertical movement of the pressure roller. The adjustment relationship between the rotation angle adjustment module and the feeding module is calculated. An STM acquisition control board outputs the corresponding speed adjustment encoder frequency to the rotation angle adjustment module. By adjusting the height of the veneer blade, a stable veneer cutting angle is maintained, avoiding quality issues caused by unstable veneer cutting angle pressure during veneer lathe lathe lathe.

Description

Technical Field

[0001] This invention relates to the field of wood processing technology, specifically to an intelligent rotary cutting machine and adjustment system based on the control and adjustment of log dimensions. Background Technology

[0002] A veneer laminating machine is a processing device that can process round logs into continuous veneer strips for the production of plywood, veneer boards, and other engineered wood products. Veneer laminating machines can be divided into those with and without chucks. With a chuck, the chuck is inserted into the round log; rotating the chuck causes the cutter to rotate from the outside in, slicing the log into thin sheets. Because the portion of the log inserted into the chuck cannot be processed, there is a relatively large amount of leftover wood. A veneer laminating machine uses a drive roller, a driven roller, and a pressure roller to support and drive the log. The drive and driven rollers drive the log's rotation, and the cutter is positioned below the pressure roller. The cutter and pressure roller work together to slice the log into thin sheets. By controlling the distance between the drive roller, driven roller, and pressure roller, the pressure between the log and the cutter is adjusted. Because there is no chuck to restrict processing, there is less leftover wood, resulting in higher wood utilization. Therefore, veneer laminating machines have a larger application market and greater development prospects.

[0003] However, in existing technologies, as the diameter of the log changes during rotary cutting, the curvature of its outer surface also changes, leading to a change in the angle between the log surface and the rotary cutting blade. As the remaining core of the log decreases during rotary cutting, the cutting angle of the rotary cutting blade becomes larger and larger, thus increasing the degree of bending of the veneer. This results in cracks on the surface of the veneer and makes the surface of the veneer less smooth, exhibiting a wave-like undulation, which greatly affects the quality of the finished veneer. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent veneer laminating machine and adjustment system based on the size control and adjustment of round logs, in order to solve the problem mentioned in the background art that as the diameter of the round log changes during veneer lamination, the curvature of its outer surface also changes accordingly, leading to a change in the angle between the round log surface and the veneer blade. As the remaining wood core becomes smaller during round log lamination, the cutting angle of the veneer blade becomes larger, thus increasing the degree of bending of the veneer, resulting in cracks on the veneer surface. In addition, it also makes the surface of the veneer less smooth, exhibiting a wave-like undulation, which greatly affects the quality of the finished veneer.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent veneer laminating machine based on log size control and adjustment, comprising a blade holder and a double roller holder. The log is placed between the blade holder and the double roller holder for veneer laminating. Before being placed into the veneer laminating machine, the wood is detwigged and rounded to form a log. The size and material of the log are pre-determined, and the veneer laminating thickness is adjusted according to the material and hardness of the wood. A veneer laminating blade holder and a pressure roller are arranged on the outer side of the blade holder. A veneer laminating blade is arranged on the surface of the blade holder. A servo motor, a driving roller, and a driven roller are arranged on the outer side of the double roller holder. The servo motor drives the driving roller to rotate via a chain and sprocket. The rotary cutting tool rotates, driven by an active roller. The log is positioned by a pressure roller, an active roller, and a driven roller. The veneer is cut by the cooperation of the rotary cutting blade and the pressure roller. A rotary angle adjustment mechanism is provided between the bottom end of the rotary cutting tool holder and the tool holder base. This mechanism includes a scissor-type connecting rod and a second servo motor. Rotary seats are rotatably connected to both ends of the scissor-type connecting rod, and a lead screw seat is rotatably connected to the other two ends. A bidirectional lead screw is fixedly connected to the output end of the second servo motor. The lead screw seat is threadedly connected to the bidirectional lead screw. The rotating seats are fixedly connected to the bottom surface of the tool holder base. The pressure roller is moved horizontally by a feed adjustment mechanism. X Distance adjustment is achieved by using a rotary angle adjustment mechanism to move the pressure roller vertically in the horizontal direction (M). y The distance adjustment, based on the required veneer cutting thickness, ensures that the cutting angle of the veneer blade remains stable regardless of changes in the log diameter, thus avoiding quality problems caused by unstable cutting angle pressure during veneer veneer veneer cutting. A feed adjustment mechanism is located at the bottom of the double roller base, comprising a servo motor four. A lead screw is fixedly connected to the output end of the servo motor four, and a lead screw nut two is threaded onto the outer wall of the lead screw. The lead screw nut two is embedded inside the double roller base. The rotation speed of the lead screw is controlled by the servo motor four, which controls the linear movement of the lead screw nut two. The rotation speed of the lead screw controls the translational speed of the lead screw nut two. The pulse value input to the servo motor four is adjusted by an encoder to achieve a rotation speed adapted to changes in L.

[0006] Preferably, the bottom ends of the tool holder and the double roller holder are provided with a machine base, the double roller holder is slidably connected to the machine base in the horizontal direction, and the tool holder is slidably connected to the machine base in the vertical direction.

[0007] Preferably, a straight rail is fixedly connected to the upper surface of the machine base, and sliders are provided on both sides of the second wire nut seat. The sliders are fixed to the bottom end of the double roller seat, and the second wire nut seat is slidably connected to the straight rail through the sliders.

[0008] Preferably, a servo motor is fixedly connected to both ends of the tool holder, and the servo motor drives the pressure roller to rotate through a chain and a sprocket.

[0009] Preferably, the outer wall of the tool holder is provided with a servo motor and a tool gap adjustment mechanism. The tool gap adjustment mechanism includes a gear set and two synchronous shafts. The two synchronous shafts are connected by a gear set. The output end of the servo motor is fixedly connected to one of the synchronous shafts. The other synchronous shaft is movably connected to a linkage frame. The other end of the linkage frame is connected to the rotary cutting tool holder.

[0010] Preferably, a linkage mechanism is provided between the rotation angle adjustment mechanism and the feed adjustment mechanism. The linkage mechanism includes a cross-grooved disc, a positioning block one, and a positioning block two. The cross-grooved disc is fixedly connected to one side of the machine base. The positioning block one is slidably connected inside the horizontal groove of the cross-grooved disc. The positioning block two is slidably connected inside the vertical groove of the cross-grooved disc. The other end of the positioning block one is fixedly connected to the outer wall of the double roller seat. The other end of the positioning block two is fixedly connected to a piezoelectric sensor. The piezoelectric sensor is fixedly connected to the bottom wall of the tool holder seat. A linkage rod is rotatably connected to the outer wall of the positioning block one. A straight groove is formed on the surface of the linkage rod. An angle-shifting rod is movably connected to the outer side of the linkage rod. A locking block is slidably connected to the outer wall of the angle-shifting rod. A connector is inserted into one side of the locking block. The connector is slidably connected to the straight groove. A sealing plate is provided on the outer wall of the cross-grooved disc. An arc groove is formed on the outer periphery of the sealing plate. One end of the angle-shifting rod is slidably connected inside the arc groove.

[0011] Preferably, one end of the toggle lever is provided with an angle adjustment component, which is either a magnetic control adjustment component or a rotary control adjustment component.

[0012] Preferably, the magnetic control adjustment assembly includes a fixed magnetic block and an electromagnetic pole group, wherein the fixed magnetic block is fixedly connected to one end of the toggle lever, and the electromagnetic pole group is fixedly connected to the inner side wall of the sealing plate.

[0013] Preferably, the rotary adjustment assembly includes a gear ring and a gear. The gear ring is fixedly connected to one end of the lever, the gear meshes with the gear ring, a knob is fixedly connected to the outer wall of the gear, and a potentiometer is provided on the outer side of the knob.

[0014] The present invention also discloses an adjustment system for an intelligent rotary cutting machine based on log size control and adjustment, including a host computer monitoring module, an STM acquisition and control board, an indentation hardness tester, a piezoelectric sensor, a servo motor unit and a rotary angle feedback module;

[0015] The servo motor unit includes a log drive module, a feeding module, and a rotation angle adjustment module;

[0016] The operating steps for adjusting the system are as follows:

[0017] Step 1: Input the processing thickness of the rotary-cut board into the host computer monitoring module, and test the elasticity of the wood using an indentation hardness tester;

[0018] Step 2: The STM acquisition and control board processes the veneer thickness information and the pressure of the rotary cutting blade on the wood, and calculates the drive encoder frequency corresponding to the log drive module.

[0019] Step 3: The STM acquisition and control board calculates the feed encoder frequency corresponding to the feeding module based on the thickness of the single board and the driving frequency of the log driving module.

[0020] Step 4: The STM acquisition and control board calculates the initial position of the pressure roller based on the size of the log and the required rotary cutting thickness, and calculates the adjustment relationship between the rotary angle adjustment module and the feeding module. The STM acquisition and control board outputs the corresponding speed adjustment encoder frequency to the rotary angle adjustment module.

[0021] Step 5: The rotation angle feedback module combines the position adjustment of the rotation angle adjustment module and the feeding module through a linkage mechanism. The piezoelectric sensor measures the deviation between the actual adjustment and the theoretical adjustment of the rotation angle adjustment module, and the STM acquisition control board corrects the adjustment encoder frequency output by the rotation angle adjustment module.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, the distance between the double roller seat and the pressure roller is controlled by the feed adjustment mechanism, thereby adjusting the horizontal movement of the pressure roller. The height of the blade holder is controlled by the rotation angle adjustment mechanism, thereby adjusting the vertical movement of the pressure roller. The adjustment relationship between the rotation angle adjustment module and the feeding module is calculated. The STM acquisition control board outputs the corresponding speed adjustment encoder frequency to the rotation angle adjustment module. By adjusting the height of the rotary cutting blade, the rotary cutting angle is kept stable, thus avoiding the quality problem of the single board being affected by the unstable rotary cutting angle pressure during the single board rotary cutting process.

[0024] 2. In this invention, the position of the synchronous shaft is adjusted by the servo motor, and the synchronous shaft controls the movement of the linkage frame through the bearing. The movement of the linkage frame drives the rotary cutting blade holder to move on the rotary cutting blade, thereby controlling the gap between the rotary cutting blade and the pressure roller. The elasticity of the wood is detected by the indentation hardness tester, and the rotation speed of the active roller is controlled according to the required veneer thickness, thereby accurately controlling the thickness of the rotary-cut veneer.

[0025] 3. In this invention, a rotation angle feedback module is set between the rotation angle adjustment module and the feeding module, so that the moving position of the tool holder and the moving position of the double roller seat are connected by a linkage rod. The module monitors whether the moving speed of the tool holder in the vertical direction is consistent with that of the double roller seat, and uses the feedback value of the piezoelectric sensor to correct the encoder frequency, so as to ensure that the position of the tool holder can maintain the stability of the cutting angle of the rotary cutting blade. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an intelligent veneer cutting machine based on log size control and adjustment according to the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of an intelligent veneer cutting machine based on log size control and adjustment according to the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the rotary angle adjustment mechanism in an intelligent rotary lathe based on log size control and adjustment according to the present invention;

[0029] Figure 4 This is a schematic diagram of the linkage mechanism in an intelligent rotary cutting machine based on log size control and adjustment according to the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the linkage mechanism in an intelligent rotary cutting machine based on log size control and adjustment according to the present invention;

[0031] Figure 6 This is a schematic diagram of the magnetic control adjustment component in an intelligent rotary cutting machine based on log size control and adjustment according to the present invention;

[0032] Figure 7 This is a schematic diagram of the rotary control adjustment component in an intelligent rotary veneer machine based on log size control and adjustment according to the present invention;

[0033] Figure 8 For the present invention Figure 2 Enlarged view of the local structure at point A;

[0034] Figure 9 For the present invention Figure 3 Enlarged view of the local structure at point B;

[0035] Figure 10 For the present invention Figure 4 Enlarged view of the local structure at point C;

[0036] Figure 11 This is a schematic diagram illustrating the veneer process of an intelligent veneer cutting machine based on log size control and adjustment according to the present invention.

[0037] Figure 12 This is a schematic diagram of the principle of pressure roller position control in the prior art;

[0038] Figure 13 This is a schematic diagram illustrating the principle of pressure roller position control in an intelligent rotary lathe based on log size control and adjustment according to the present invention.

[0039] Figure 14This is a schematic diagram illustrating the principle of the blade holder height position correction in an intelligent veneer lathe based on log size control and adjustment according to the present invention.

[0040] Figure 15 This is a system block diagram of the adjustment system of an intelligent rotary cutting machine based on log size control and adjustment according to the present invention.

[0041] In the diagram: 1. Blade holder; 11. Rotary cutting blade holder; 110. Rotary cutting blade; 12. Servo motor one; 13. Pressure roller; 2. Rotation angle adjustment mechanism; 21. Scissor linkage; 22. Rotating seat; 23. Nut holder one; 24. Bidirectional lead screw; 25. Servo motor two; 3. Double roller seat; 31. Servo motor three; 32. Driven roller; 33. Driven roller; 4. Machine base; 5. Feed adjustment mechanism; 51. Servo motor four; 52. Lead screw; 53. Nut holder two; 54. Straight rail; 55. Slider; 6. Linkage mechanism; 61. Cross groove plate; 62. Positioning block one; 63. Positioning block two; 64. Linkage rod; 640. Straight groove; 65. Angle lever; 650. Locking block; 651. Connector; 66. Sealing plate; 660. Arc groove; 671. Fixed magnet; 672. Electromagnetic pole assembly; 681. Gear ring; 682. Gear; 683. Knob; 7. Servo motor five; 8. Tool gap adjustment mechanism; 81. Gear set; 82. Synchronous shaft; 83. Linkage frame. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1: According to Figure 1 - Figure 14As shown: An intelligent veneer laminating machine based on log size control includes a blade holder 1 and a double roller holder 3. Logs are placed between the blade holder 1 and the double roller holder 3 for veneer laminating. Before being placed into the veneer laminating machine, the wood is detwigged and rounded to form logs. The size and material of the logs are pre-determined, and the veneer laminating thickness is adjusted according to the wood's material and hardness. A veneer laminating blade holder 11 and a pressure roller 13 are arranged on the outer side of the blade holder 1. A veneer laminating blade 1 is arranged on the surface of the veneer laminating blade holder 11. 10. A servo motor 31, a drive roller 32, and a driven roller 33 are arranged on the outer side of the double roller base 3. The servo motor 31 drives the drive roller 32 to rotate via a chain and sprocket. The drive roller 32 drives the log to rotate. The pressure roller 13, drive roller 32, and driven roller 33 position the log. A circle of any size can be positioned by three points that are not on a straight line. By using the positioning of the pressure roller 13, servo motor 31, and drive roller 32, the log is fixed in position around the axis. Stable rotation ensures stable pressure between the outer layer of the log and the rotary cutting blade holder 11. The servo motor 31 drives the active roller 32 to rotate. Since the output speed of the servo motor 31 is constant, the log is driven to be rotary cut at a constant linear speed, and the veneer is cut and discharged at a constant speed. The veneer is cut by the cooperation of the rotary cutting blade 110 and the pressure roller 13. The thickness of the veneer cut from the log is controlled by the pressure value between the rotary cutting blade holder 11 and the pressure roller 13. The pressure when in contact with the log can be affected by adjusting the angle and position of the pressure roller 13, thus affecting the thickness of the veneer slice. Secondly, the feeding speed of the rotary cutting machine also affects the thickness of the slice. A faster feeding speed results in thinner veneer slices, while a slower feeding speed results in thicker veneer slices. Finally, the thickness of the veneer slice is also related to the material properties of the wood itself. The hardness and elasticity of the wood affect the thickness of the slice. By pre-detecting the material of the wood and then setting the output power of the servo motor 31, the thickness of the veneer output is determined.

[0044] A rotary cutting blade holder 11 is provided with a rotary angle adjustment mechanism 2 between its bottom end and the blade holder base 1. The rotary angle adjustment mechanism 2 includes a scissor-type connecting rod 21 and a servo motor 25. The two ends of the scissor-type connecting rod 21 are rotatably connected to a rotating seat 22, and the other two ends of the scissor-type connecting rod 21 are rotatably connected to a lead screw 23. The output end of the servo motor 25 is fixedly connected to a bidirectional lead screw 24. The lead screw 23 is threadedly connected to the bidirectional lead screw 24. The rotating seat 22 is fixedly connected to the bottom surface of the blade holder base 1.

[0045] During the veneer cutting process, the rotation speed of the active roller 32 remains constant, so the entire motion is carried out at a constant linear velocity. That is, the rotation speed of the wood will gradually increase as the diameter decreases. When the diameter of the log decreases, the feed adjustment mechanism 5 drives the double roller seat 3 to move closer to the knife holder seat 1. No matter how the diameter of the log changes, the pressure roller 13, the active roller 32 and the driven roller 33 are always in contact with the outer surface of the log.

[0046] Because the rotary cutting blade 110 is always fixed in a specific position, as the diameter of the log changes during rotary cutting, the curvature of its outer surface also changes accordingly. Since the rotary cutting blade 110 always contacts the log from a fixed direction, the change in the curvature of the log's outer perimeter leads to a change in the angle between the log surface and the rotary cutting blade 110, as shown in the attached figure. Figure 12 As shown, in the existing technical solution, as the diameter of the log decreases, only the pressure roller 13 is moved horizontally by M. X As the distance decreases, the cutting angle of the rotary cutting blade 110 continuously decreases. When the cutting angle of the rotary cutting blade holder 11 is too large, the curvature of the veneer increases, causing cracks on the surface of the veneer. In addition, the surface of the veneer will not be smooth enough, exhibiting a wave-like undulation, which greatly affects the quality of the finished veneer. When the cutting angle of the rotary cutting blade 110 is too small, the contact area between the wood surface and the back blade surface of the rotary cutting blade 110 increases, resulting in increased pressure on the wood core, which can easily cause the wood segment to bend or split. Therefore, during the rotary cutting of round logs, the cutting angle of the rotary cutting blade 110 should be adjusted appropriately.

[0047] The bottom end of the double roller seat 3 is provided with a feed adjustment mechanism 5, which includes a servo motor 4 51. The output end of the servo motor 4 51 is fixedly connected to a lead screw 52. The outer wall of the lead screw 52 is threadedly connected to a lead screw nut 2 53, which is embedded inside the double roller seat 3.

[0048] In this embodiment, the relationship between the radius of the log and the cutting angle 110 of the rotary cutting blade is as follows: Figure 13 As shown, in this technical solution, the feed adjustment mechanism 5 is used to move the pressure roller 13 horizontally by M. X Distance adjustment is achieved by using the rotation angle adjustment mechanism 2 to move the pressure roller 13 vertically in the horizontal direction. y Distance adjustment, based on the required veneer ...

[0049] To ensure that the log remains in contact with the pressure roller 13, the driving roller 32, and the driven roller 33, the distance between the axis of the pressure roller 13 and the axis of the driving roller 32 needs to be calculated, and the following relationship exists:

[0050]

[0051] In the formula, L is the horizontal distance between the axis of the pressure roller 13 and the axis of the drive roller 32, r1 is the radius of the pressure roller 13, r2 is the radius of the drive roller 32, h1 is the center distance between the pressure roller 13 and the log, h2 is the center distance between the drive roller 32 and the log, and R is the real-time radius of the log. As the log is rotary-cut, its radius continuously decreases, and the relationship between the log radius and time is as follows:

[0052]

[0053] In the formula, R0 is the initial radius of the log, S is the thickness of the veneer being rotary-cut, which is the base circle radius of the involute of the rotary cutting trajectory, v is the linear velocity of the log rotary cutting, and t is the running time of the rotary cutting machine. It can be seen that the radius of the log decreases with increasing rotary cutting time, and the change in the log radius decreases significantly with increasing time. The distance between the axes of the pressure roller 13 and the drive roller 32 is affected by the radius of the log; therefore, the distance between the axes also decreases with increasing rotary cutting time, and the rate of shortening of the distance between the axes gradually increases. The drive roller 32 and the driven roller 33 are controlled by the feed regulator. The control position of the mechanism 5 ensures that the active roller 32 and the driven roller 33 always cooperate with the pressure roller 13 to position the log. The feed adjustment mechanism 5 drives the double roller seat 3 to move on a straight track. The rotation speed of the lead screw 52 is controlled by the servo motor 4 51. The rotation of the lead screw 52 controls the movement of the nut seat 2 53 in the straight direction. The rotation speed of the lead screw 52 controls the translation speed of the nut seat 2 53. The pulse value input to the servo motor 4 51 is adjusted by the encoder to adjust the servo motor 4 51 to achieve a speed that matches the change of L, so that the displacement value of the nut seat 2 53 is consistent with the change value of L.

[0054] Example 2: According to Figure 1 , Figure 2 and Figure 11 As shown, a base 4 is provided at the bottom of the tool holder 1 and the double roller base 3. The double roller base 3 is slidably connected to the base 4 in the horizontal direction, and the tool holder 1 is slidably connected to the base 4 in the vertical direction. A straight rail 54 is fixedly connected to the upper surface of the base 4. Slider blocks 55 are provided on both sides of the second wire nut base 53. The sliders 55 are fixed to the bottom of the double roller base 3, and the second wire nut base 53 is slidably connected to the straight rail 54 through the sliders 55. A servo motor 12 is fixedly connected to both ends of the tool holder 1. The servo motor 12 drives the pressure roller 13 to rotate through a chain and sprocket.

[0055] In this embodiment, a slider 55 is set below the double roller seat 3, and a straight rail 54 is set on the upper surface of the machine base 4. The double roller seat 3 is positioned by the cooperation between the straight rail 54 and the slider 55, so that it moves along a straight trajectory, ensuring that the double roller seat 3 completely fits the side of the round wood. Servo motors 12 are set on both sides of the knife holder 1, and the servo motors 12 provide driving force to the pressure roller 13. The rotation of the pressure roller 13 generates pressure between it and the rotary cutting blade 110. The speed of the pressure roller 13 is controlled by controlling the encoder of the servo motor 12, thereby controlling the pressure between the pressure roller 13 and the rotary cutting blade 110, and indirectly achieving the effect of adjusting the thickness of the rotary-cut veneer. The machine base 4 is installed on the ground, and an electrical control box is set inside the machine base 4. The host computer control module is set in the electrical control box. The double roller seat 3 is slidably connected to the machine base 4 through the feed adjustment mechanism 5. The knife holder 1 moves with the machine base 4 in the vertical lifting direction through the rotation angle adjustment mechanism 2.

[0056] Example 3: According to Figure 1 , Figure 3 , Figure 9 and Figure 11 As shown, the outer wall of the tool holder 1 is provided with a servo motor 7 and a tool gap adjustment mechanism 8. The tool gap adjustment mechanism 8 includes a gear set 81 and two synchronous shafts 82. The two synchronous shafts 82 are connected by the gear set 81. The output end of the servo motor 7 is fixedly connected to one of the synchronous shafts 82. The other synchronous shaft 82 is movably connected to a linkage frame 83. The other end of the linkage frame 83 is connected to the rotary cutting tool holder 11.

[0057] In this embodiment, another method for controlling the distance between the rotary cutting blade 110 and the pressure roller 13 is achieved through the tool gap adjustment mechanism 8. The outer end of the synchronous shaft 82 is adjusted by the servo motor 7. The synchronous shaft 82 controls the movement of the linkage frame 83 through the bearing. The movement of the linkage frame 83 drives the rotary cutting blade holder 11 to move on the rotary cutting blade 110, thereby controlling the gap between the rotary cutting blade 110 and the pressure roller 13. By controlling the tool gap adjustment mechanism 8 through the servo motor 7, the thickness of the veneer after rotary cutting through the rotary cutting blade 110 and the pressure roller 13 can be adjusted. The pressure is adjusted by the rotation of the pressure roller 13, and the thickness of the veneer is precisely controlled.

[0058] Example 4: According to Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, a linkage mechanism 6 is provided between the rotation angle adjustment mechanism 2 and the feed adjustment mechanism 5. The linkage mechanism 6 includes a cross groove plate 61, a positioning block 1 62 and a positioning block 2 63. The cross groove plate 61 is fixedly connected to one side of the machine base 4. The positioning block 1 62 is slidably connected inside the horizontal groove of the cross groove plate 61. The positioning block 2 63 is slidably connected inside the vertical groove of the cross groove plate 61. The other end of the positioning block 1 62 is fixedly connected to the outer wall of the double roller seat 3. The other end of the positioning block 2 63 is fixedly connected to a piezoelectric sensor. The piezoelectric sensor is fixedly connected to the bottom wall of the tool holder seat 1.

[0059] A linkage rod 64 is rotatably connected to the outer wall of the positioning block 62. A straight groove 640 is formed on the surface of the linkage rod 64. A toggle rod 65 is movably connected to the outer side of the linkage rod 64. A locking block 650 is slidably connected to the outer wall of the toggle rod 65. A connector 651 is inserted into one side of the locking block 650. The connector 651 is slidably connected to the straight groove 640. A sealing plate 66 is provided on the outer wall of the cross groove plate 61. An arc groove 660 is formed on the outer periphery of the sealing plate 66. One end of the toggle rod 65 is slidably connected inside the arc groove 660.

[0060] In this embodiment, when the height position of the tool holder 1 is adjusted by the rotation angle adjustment mechanism 2 and the horizontal position of the double roller seat 3 is adjusted by the feed adjustment mechanism 5, the driving speed of the rotation angle adjustment mechanism 2 is controlled by the encoder of the second servo motor 25, and the driving of the feed adjustment mechanism 5 is controlled by the encoder of the fourth servo motor 51. The control of the two adjustment systems is independent of each other. It is known that the motion trajectory of the rotation angle adjustment mechanism 2 and the motion trajectory of the feed adjustment mechanism 5 satisfy a specific relationship. The feed rate of the fourth servo motor 51 is controlled to meet the constant linear speed operation of the log. The required speed of the corresponding second servo motor 25 and the fourth servo motor 51 is calculated. A linkage mechanism 6 is set between the motion of the rotation angle adjustment mechanism 2 and the feed adjustment mechanism 5 for feedback monitoring.

[0061] Positioning block 1 62 is linked to the position of the double roller seat 3, and positioning block 2 63 is linked to the position of the tool holder seat 1. The distances of positioning block 1 62 and positioning block 2 63 from the center of the cross groove are the motion ratios of the two adjustment mechanisms. The lever 65 controls the swing of the linkage rod 64 so that the angle between the linkage rod 64 and positioning block 1 62 is a constant value. When the feed adjustment mechanism 5 drives the double roller seat 3 to move, positioning block 1 62 drives positioning block 2 63 to move through the linkage rod 64. Positioning block 2 63 reflects the adjustment rate required by the rotation angle adjustment mechanism 2. If the control rate of servo motor 2 25 matches the movement of positioning block 2 63, the movement trajectory of the tool holder seat 1 meets the position control requirements of the pressure roller 13. If the control rate of servo motor 2 25 does not match the movement of positioning block 2 63, the encoder output of servo motor 2 25 needs to be corrected. The piezoelectric sensor is used to reflect whether the movement trajectory of the tool holder seat 1 controlled by the rotation angle adjustment mechanism 2 matches that of positioning block 2 63.

[0062] Example 5: According to Figure 4 , Figure 5 and Figure 6 As shown, an angle adjustment component is provided at one end of the toggle lever 65. The angle adjustment component is either a magnetic control adjustment component or a rotary control adjustment component. The magnetic control adjustment component includes a fixed magnetic block 671 and an electromagnetic pole group 672. The fixed magnetic block 671 is fixedly connected to one end of the toggle lever 65, and the electromagnetic pole group 672 is fixedly connected to the inner wall of the sealing plate 66.

[0063] In this embodiment, the electromagnetic pole group 672 consists of three pairs of independently controlled electromagnetic rings. Each pair of electromagnetic rings is provided with magnetic poles of the same polarity at equal intervals. When the magnetic poles of the ring are energized, the fixed magnetic block 671 is moved to the middle position between the two magnetic poles by magnetic repulsion. The three pairs of electromagnetic rings are staggered. By switching different electromagnetic rings to be energized, the fixed magnetic block 671 is rotated to a designated position under magnetic control.

[0064] Example 6: According to Figure 4 , Figure 5 and Figure 7 As shown, one end of the toggle lever 65 is equipped with an angle adjustment component, which is either a magnetic control adjustment component or a rotary control adjustment component. The rotary control adjustment component includes a gear ring 681 and a gear 682. The gear ring 681 is fixedly connected to one end of the toggle lever 65, and the gear 682 meshes with the gear ring 681. A knob 683 is fixedly connected to the outer wall of the gear 682, and a potentiometer is provided on the outer side of the knob 683.

[0065] In this embodiment, the rotation of gear 682 is controlled by knob 683, and gear 682 controls the rotation of gear ring 681. The angle is precisely controlled by the reduction ratio between gear 682 and gear ring 681. A potentiometer is set on the outside of knob 683, which can convert the rotation angle information of knob 683 into an electrical signal, thus accurately collecting the rotation angle information of knob 683.

[0066] Example 7: According to Figure 15 As shown, an adjustment system for an intelligent rotary lathe based on log size control includes a host computer monitoring module, an STM acquisition and control board, an indentation hardness tester, a piezoelectric sensor, a servo motor unit, and a rotary angle feedback module; the servo motor unit includes a log drive module, a feeding module, and a rotary angle adjustment module.

[0067] The operating steps for adjusting the system are as follows:

[0068] 1) Input the processing thickness of the rotary-cut board into the host computer monitoring module, and test the elasticity of the wood using an indentation hardness tester;

[0069] 2) The STM acquisition and control board processes the single-board thickness information and the pressure of the rotary cutting blade 110 on the wood, and calculates the drive encoder frequency corresponding to the round log drive module.

[0070] 3) The STM acquisition and control board calculates the feed encoder frequency corresponding to the feeding module based on the thickness of the single board and the driving frequency of the log driving module;

[0071] 4) The STM acquisition and control board calculates the initial position of the pressure roller 13 based on the size of the log and the required rotary cutting thickness, and calculates the adjustment relationship between the rotary angle adjustment module and the feeding module. The STM acquisition and control board outputs the corresponding speed adjustment encoder frequency to the rotary angle adjustment module.

[0072] 5) The rotation angle feedback module combines the position adjustment of the rotation angle adjustment module and the feeding module through the linkage mechanism 6. The piezoelectric sensor measures the deviation between the actual adjustment and the theoretical adjustment of the rotation angle adjustment module, and the STM acquisition control board corrects the adjustment encoder frequency output by the rotation angle adjustment module.

[0073] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent veneer cutting machine based on log size control and adjustment, comprising a blade holder (1) and a double roller holder (3), wherein the log is placed between the blade holder (1) and the double roller holder (3) for veneer cutting, wherein a veneer cutting blade holder (11) and a pressure roller (13) are provided on the outside of the blade holder (1), and a veneer cutting blade (110) is provided on the surface of the veneer cutting blade holder (11). A servo motor (31), a drive roller (32) and a driven roller (33) are provided on the outside of the double roller holder (3). The servo motor (31) drives the drive roller (32) to rotate via a chain and sprocket, thereby driving the log to rotate. The log is positioned by the pressure roller (13), the drive roller (32) and the driven roller (33), and the veneer is cut by the cooperation of the veneer cutting blade (110) and the pressure roller (13). A rotary cutting tool holder (11) is provided with a rotary angle adjustment mechanism (2) between its bottom end and the tool holder base (1). The rotary angle adjustment mechanism (2) includes a scissor-type connecting rod (21) and a second servo motor (25). The two ends of the scissor-type connecting rod (21) are rotatably connected to a rotating seat (22), and the other two ends of the scissor-type connecting rod (21) are rotatably connected to a first lead screw seat (23). The output end of the second servo motor (25) is fixedly connected to a bidirectional lead screw (24). The first lead screw seat (23) is... The rotating seat (22) is fixedly connected to the bottom surface of the tool holder (1) and is threaded to the bidirectional lead screw (24). The bottom end of the double roller seat (3) is provided with a feed adjustment mechanism (5). The feed adjustment mechanism (5) includes a servo motor four (51). The output end of the servo motor four (51) is fixedly connected to the lead screw (52). The outer side wall of the lead screw (52) is threaded to the lead screw nut two (53). The lead screw nut two (53) is embedded in the inside of the double roller seat (3). A linkage mechanism (6) is provided between the rotation angle adjustment mechanism (2) and the feed adjustment mechanism (5). The linkage mechanism (6) includes a cross groove plate (61), a positioning block one (62), and a positioning block two (63). The cross groove plate (61) is fixedly connected to one side of the machine base (4). The positioning block one (62) is slidably connected inside the horizontal groove of the cross groove plate (61). The positioning block two (63) is slidably connected inside the vertical groove of the cross groove plate (61). The other end of the positioning block one (62) is fixedly connected to the outer wall of the double roller seat (3). The other end of the positioning block two (63) is fixedly connected to a piezoelectric sensor. The piezoelectric sensor is connected to the bottom of the tool holder seat (1). The outer wall of the positioning block (62) is rotatably connected to a linkage rod (64). A straight groove (640) is provided on the surface of the linkage rod (64). A toggle rod (65) is movably connected to the outer side of the linkage rod (64). A locking block (650) is slidably connected to the outer side of the toggle rod (65). A connector (651) is inserted into one side of the locking block (650). The connector (651) is slidably connected to the straight groove (640). A sealing plate (66) is provided on the outer side of the cross groove plate (61). An arc groove (660) is provided on the outer periphery of the sealing plate (66). One end of the toggle rod (65) is slidably connected inside the arc groove (660).

2. The intelligent veneer cutting machine based on log size control and adjustment according to claim 1, characterized in that: The bottom ends of the tool holder (1) and the double roller holder (3) are provided with a machine base (4). The double roller holder (3) is slidably connected to the machine base (4) in the horizontal direction, and the tool holder (1) is slidably connected to the machine base (4) in the vertical direction.

3. The intelligent veneer cutting machine based on log size control and adjustment according to claim 2, characterized in that: A straight rail (54) is fixedly connected to the upper surface of the machine base (4). Slider (55) is provided on both sides of the second wire nut seat (53). The slider (55) is fixed to the bottom end of the double roller seat (3). The second wire nut seat (53) is slidably connected to the straight rail (54) through the slider (55).

4. The intelligent veneer cutting machine based on log size control and adjustment according to claim 1, characterized in that: Both ends of the tool holder (1) are fixedly connected to a servo motor (12), which drives the pressure roller (13) to rotate via a chain and sprocket.

5. The intelligent veneer cutting machine based on log size control and adjustment according to claim 1, characterized in that: The outer wall of the tool holder (1) is provided with a servo motor (7) and a tool gap adjustment mechanism (8). The tool gap adjustment mechanism (8) includes a gear set (81) and two synchronous shafts (82). The two synchronous shafts (82) are connected by the gear set (81). The output end of the servo motor (7) is fixedly connected to one of the synchronous shafts (82). The other synchronous shaft (82) is movably connected to a linkage frame (83). The other end of the linkage frame (83) is connected to the rotary cutting tool holder (11).

6. The intelligent veneer cutting machine based on log size control and adjustment according to claim 1, characterized in that: An angle adjustment component is provided at one end of the toggle lever (65), which is either a magnetic control adjustment component or a rotary control adjustment component.

7. The intelligent veneer cutting machine based on log size control and adjustment according to claim 6, characterized in that: The magnetic control adjustment assembly includes a fixed magnetic block (671) and an electromagnetic pole group (672). The fixed magnetic block (671) is fixedly connected to one end of the toggle lever (65), and the electromagnetic pole group (672) is fixedly connected to the inner wall of the sealing plate (66).

8. The intelligent veneer cutting machine based on log size control and adjustment according to claim 6, characterized in that: The rotary control adjustment assembly includes a toothed ring (681) and a gear (682). The toothed ring (681) is fixedly connected to one end of the lever (65). The gear (682) meshes with the toothed ring (681). A knob (683) is fixedly connected to the outer wall of the gear (682). A potentiometer is provided on the outer side of the knob (683).

9. An adjustment system for an intelligent veneer lathe based on log size control, characterized in that: The intelligent rotary cutting machine based on log size control and adjustment as described in any one of claims 1-8 includes a host computer monitoring module, an STM acquisition and control board, an indentation hardness tester, a piezoelectric sensor, a servo motor unit, and a rotary angle feedback module. The servo motor unit includes a log drive module, a feeding module, and a rotation angle adjustment module; The operating steps for adjusting the system are as follows: S1. Input the processing thickness of the rotary-cut board into the host computer monitoring module, and test the elasticity of the wood using an indentation hardness tester; S2, STM acquisition and control board processes single board thickness information and pressure of rotary cutting blade (110) on wood, and calculates the drive encoder frequency corresponding to the round wood drive module; The S3 and STM acquisition and control boards calculate the feed encoder frequency corresponding to the feeding module based on the thickness of the single board and the driving frequency of the log driving module. S4. The STM acquisition and control board calculates the initial position of the pressure roller (13) based on the size of the log and the required rotary cutting thickness, and calculates the adjustment relationship between the rotary angle adjustment module and the feeding module. The STM acquisition and control board outputs the corresponding speed adjustment encoder frequency to the rotary angle adjustment module. S5. The rotation angle feedback module combines the position adjustment of the rotation angle adjustment module and the feeding module through the linkage mechanism (6). The piezoelectric sensor measures the deviation between the actual adjustment and the theoretical adjustment of the rotation angle adjustment module. The STM acquisition control board corrects the frequency of the adjustment encoder output by the rotation angle adjustment module.

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