A fully automatic wood rounding machine and rounding control method thereof

Abstract

The present invention provides a fully automatic wood rounding machine, including a rounding machine, a primary feeding mechanism, a secondary feeding mechanism and a controller. The rounding machine includes a supporting frame, a single roller, a cutting knife, a double-row roller, a single roller cutter platform synchronous limiting mechanism, a wood shift limiting mechanism and a rounding auxiliary supporting mechanism. The primary feeding mechanism includes a first supporting frame and a first conveying chain. The secondary feeding mechanism includes a second supporting frame, a second conveying chain, a primary stock detection photoelectric switch, a wood diameter detection photoelectric switch and a secondary stock detection photoelectric switch. The rounding machine and the rounding control method thereof can realize automatic rounding processing of wood. The rounding process does not require manual participation, which not only improves the safety performance, but also reduces the factory labor cost. Furthermore, the wood rounding adopts automatic control technology, which greatly improves the wood rounding processing efficiency compared with manual operation.

Description

Technical Field

[0001] The invention relates to a full-automatic wood rounding machine and a rounding control method thereof. Background Art

[0002] At present, in the wood processing industry, because the bark, surface bumps, knots or branches of trees affect the deep processing of wood, it is usually necessary to use a rounding machine to first round the wood, and then perform subsequent bark spinning on the wood. When the existing wood rounding machine is rounding the wood, basically the wood is put into the rounding machine manually. In this process, personal safety accidents often occur, making the use of the rounding machine a safety risk; further, because some wood is round or conical, one end of the wood often falls between the single roller and the double-row roller of the rounding machine when rounding, so that the wood cannot be rounded smoothly, making the wood rounding operation process too cumbersome, thereby reducing the efficiency of wood rounding. Summary of the invention

[0003] The purpose of the present invention is to provide a fully automatic wood rounding machine and a rounding control method thereof. By using the rounding machine and the rounding control method thereof, automatic rounding processing of wood can be realized, and the rounding process does not require human participation, which not only improves the safety performance, but also reduces the factory labor cost. Furthermore, the wood rounding adopts automatic control technology, which greatly improves the efficiency of wood rounding processing compared with manual operation.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a fully automatic wood rounding machine, including a rounding machine, a primary feeding mechanism, a secondary feeding mechanism and a controller, the rounding machine including a supporting frame, a single roller, a cutting knife, a double-row roller and a single-roller tool platform synchronous limiting mechanism, the single roller and the cutting knife are arranged on the single-roller tool platform arranged on the supporting frame, the cutting knife is arranged on a tool fixing plate arranged on the oblique lower part of the single roller, both ends of the single-roller tool platform are clamped on the supporting frame, and the single-roller tool platform can realize reciprocating motion on the supporting frame by being driven by a first oil cylinder arranged on the supporting frame, the double-row roller is arranged on the supporting frame and is opposite to the single roller, there is a rounding interval between the single roller and the double-row roller, and when rounding the wood, the single roller and the double-row roller realize clamping and driving of the wood. The wood is continuously rolled, and during the continuous rolling process of the wood, the cutting knife cuts and circles the circumferential side wall of the wood. The synchronous limiting mechanism of the single-roller cutter platform includes a spur rack, a synchronous gear and a synchronous connecting shaft. The two spur racks are relatively arranged on the supporting frame and are located on both sides of the single-roller cutter platform. The synchronous connecting shaft is arranged on the single-roller cutter platform. The synchronous gears matched with the spur racks are respectively arranged at both ends of the synchronous connecting shaft. The primary feeding mechanism includes a first support frame and a first conveying chain. A plurality of the first conveying chains are horizontally arranged side by side on the first support frame along the length direction of the first support frame. A plurality of first hooks are arranged on the first conveying chain. When the first conveying chain is running, the wood on the first support frame can be driven to move by the first hooks.

[0005] The secondary feeding mechanism includes a second support frame, a second conveying chain, a primary material storage detection photoelectric switch, a wood diameter detection photoelectric switch and a secondary material storage detection photoelectric switch. The second support frame is arranged at the front end of the discharging side of the first support frame. Two second conveying chains are arranged side by side on the second support frame, and the second conveying chains are distributed in an inclined state. The wood transported by the first conveying chain can fall into the lower end side of the second conveying chain. The primary material storage detection photoelectric switch is used to detect whether there is wood on the lower end side of the second conveying chain. A plurality of second hooks are arranged between the two second conveying chains. When the second conveying chain is running, the wood on it can be driven to move to the high end side of the second conveying chain through the second hooks. The wood diameter detection photoelectric switch is arranged on the second support frame and is located below the area between the two second conveying chains. The secondary material storage detection photoelectric switch is used to detect whether there is wood on the high end side of the second conveying chain. The wood falling from the high end side of the second conveying chain can enter the circle finding interval between the single roller and the double-row rollers.

[0006] The rounding machine also includes a wood shifting limit mechanism and a rounding auxiliary support mechanism. The single-roller tool table synchronous limit mechanism also includes a position encoder, which is arranged at one end of the synchronous connecting shaft, and the position encoder can rotate coaxially with the synchronous gear adjacent thereto; the wood shifting limit mechanism includes a shift detection photoelectric switch and a reset cylinder, and two first fixing holes located below the two ends of the single roller are relatively arranged on the tool fixing plate and the cutting knife, and the shift detection photoelectric switch is arranged in the first fixing hole. The two reset cylinders are relatively arranged on both sides of the rounding interval; the rounding auxiliary support mechanism includes a supporting roller , a horizontal oil cylinder and a supporting triangle plate, the two horizontal oil cylinders are relatively arranged below the double-row rollers, and the rear ends of the horizontal oil cylinders are hinged on the supporting frame, the supporting rollers are arranged at the front ends of the movable rods of the two horizontal oil cylinders, the horizontal oil cylinders can push the supporting rollers horizontally and make the supporting rollers stay below the circle-finding interval, and the supporting rollers can rotate freely relative to the movable rods of the horizontal oil cylinders; a plurality of supporting triangle plates are arranged on the tool fixing plate, and in the process of the supporting triangle plates following the single-roller tool table to move toward the supporting rollers, when the supporting triangle plates contact the supporting rollers, as the supporting triangle plates continue to move, the supporting rollers are gradually lifted up by the inclined surfaces of the supporting triangle plates;

[0007] A speed encoder is arranged at one end of one of the rotating rollers on the double-row rollers, and the speed encoder rotates coaxially with the corresponding rotating roller; an oil pressure sensor is arranged on the oil inlet pipe extending from the first oil cylinder;

[0008] The controller can control the operation of a single roller, a double row of rollers, a first oil cylinder, a reset oil cylinder, a horizontal oil cylinder, a first conveyor chain and a second conveyor chain; the first-level stock detection photoelectric switch, the wood diameter detection photoelectric switch, the second-level stock detection photoelectric switch, the shift detection photoelectric switch, the position encoder and the speed encoder are connected.

[0009] Preferably, two second fixing holes are arranged between the two first fixing holes, and a material detection photoelectric switch is arranged in the second fixing holes, and the material detection photoelectric switch is connected to the controller.

[0010] Furthermore, a plurality of supporting gears are arranged on the supporting roller, and the supporting gears are opposite to the gaps between the corresponding two supporting triangle plates.

[0011] Furthermore, a dividing triangle plate is arranged on one side of each of the second conveying chains, and the wood conveyed by the second conveying chain through the second hook is detected by the wood diameter detection photoelectric switch only after it moves through the dividing triangle plate.

[0012] Furthermore, two inclined support plates are provided on the single-roller tool table, which are respectively located on the rear sides of the two ends of the single roller, and the inclined support plates are inclined toward the circle finding interval between the single roller and the double-row rollers. An anti-jump detection photoelectric switch for detecting the upper area of ​​the circle finding interval is provided on the inclined support plate, and the anti-jump detection photoelectric switch is connected to the controller.

[0013] The present invention also provides a rounding control method for a wood full-automatic rounding machine, comprising the following steps:

[0014] S1. Place a certain amount of cut wood onto the first support frame;

[0015] S2, start the controller, the controller starts the single roller and the double-row rollers, so that the single roller and the double-row rollers rotate, and the single roller is in the initial working position close to the double-row rollers. At the same time, the controller makes the other components enter the standby state;

[0016] S3, when the primary material storage detection photoelectric switch detects that there is no wood on the lower end side of the second conveyor chain, the controller starts the first conveyor chain. As the first conveyor chain runs, the wood at the discharging end of the first support frame falls to the lower end side of the second conveyor chain under the push of the first hook. When the primary material storage detection photoelectric switch detects that there is wood on the lower end side of the second conveyor chain, the controller stops the operation of the first conveyor chain. The above process is repeated to ensure that there is always wood on the lower end side of the second conveyor chain.

[0017] S4. When the secondary material storage detection photoelectric switch detects that there is no wood on the high end side of the second conveyor chain, the controller starts the second conveyor chain. During the operation of the second conveyor chain, the wood on the low end side of the second conveyor chain is transported to the high end side of the second conveyor chain. When the secondary material storage detection photoelectric switch detects that there is wood on the high end side of the second conveyor chain, the controller stops the operation of the second conveyor chain and repeats the above process to ensure that there is always wood on the high end side of the second conveyor chain. During the process of the second conveyor chain transporting wood to its high end side, the wood diameter detection photoelectric switch will continue to detect the wood for a period of time. When the wood disappears from the detection range of the wood diameter detection photoelectric switch, the controller will detect the wood according to the running speed of the second conveyor chain and the wood diameter. The diameter detection photoelectric switch continuously detects the length of time that the wood is moved to calculate the corresponding diameter of the wood. Then, the controller starts the first oil cylinder to retract the first oil cylinder. The retraction of the first oil cylinder drives the single-roller knife table to move backward. During the backward movement of the single-roller knife table, the position encoder sends the numerical value L of the moving position to the controller in real time. The controller compares the numerical value L of the moving position with the calculated wood diameter in real time. When the numerical value L of the moving position is equal to the wood diameter, the controller stops the operation of the first oil cylinder. At this time, the single-roller knife table moves to the specified position. After the single-roller knife table moves to the specified position, the controller starts the horizontal oil cylinder so that the horizontal oil cylinder pushes the support roller out. After the support roller is pushed into place, the controller starts the second conveyor chain again. The operation of the conveyor chain causes the wood on the high end side of the second conveyor chain to fall directly into the circle-finding interval between the single roller and the double-row rollers. When the material detection photoelectric switch detects the presence of wood in the circle-finding interval, the controller causes the anti-jump detection photoelectric switch to enter the detection state and starts the first oil cylinder again, causing the first oil cylinder to push the single-roller knife table to move slowly toward the wood. In the process of the single-roller knife table slowly moving toward the wood, the supporting triangle plate gradually lifts the supporting roller, thereby realizing the lifting of the wood by the supporting roller, thereby realizing the effective clamping of the wood by the single roller and the double-row rollers. During the clamping process, as the wood continues to rotate, the cutting and circle-finding of the wood is realized. In the initial circle-finding and cutting process, when the wood jumps out of the circle-finding interval upward, the material detection photoelectric switch does not emit a signal. The controller sends out a detection signal, and the anti-jump detection photoelectric switch sends out a detection signal. After the controller receives the detection signal sent by the anti-jump detection photoelectric switch, the controller enables the first oil cylinder to enter the return wood finding work process. In the return wood finding work process, the first oil cylinder continuously retreats to the initial working position. During the continuous retreat of the first oil cylinder, as the space in the circle finding interval continues to increase, the wood falls back into the circle finding interval under the action of gravity. At this time, the material detection photoelectric switch sends out a detection signal, while the anti-jump detection photoelectric switch does not send out a detection signal. The controller stops the retreat of the first oil cylinder based on the detection signal sent by the material detection photoelectric switch, and slowly advances the first oil cylinder again, and then enters the continuous circle finding and cutting process. During the continuous circle finding and cutting process,The controller synchronously monitors the detection data of the oil pressure sensor and the speed encoder in real time. When the detection data of the oil pressure sensor and the speed encoder reach the upper limit values ​​set in the controller, the controller makes the single-roller knife table retreat a certain distance, and the retreat distance is less than the initial forward distance of the single-roller knife table. Then, the single-roller knife table is advanced again. During the above-mentioned continuous circular cutting process of the wood, when the detection data of the oil pressure sensor and the speed encoder reach the lower limit values ​​set in the controller, the controller makes the single-roller knife table enter a uniform forward state. During the process of the single-roller knife table continuously advancing at a uniform speed for a period of time T1, when the single-roller knife table continuously advances at a uniform speed for a period of time T2, T2 is less than T1, and the controller starts the horizontal oil cylinder to make the support roller return to the initial position. The controller simultaneously stops the starting power of the anti-jump detection switch; single-roller knife table After continuously moving forward at a constant speed for a period of time T1, the controller stops the single roller cutter table from moving forward, and then makes the single roller cutter table retreat. During the retreat of the single roller cutter table, the position encoder detects the value L of the moving position in real time. When the value L of the moving position is equal to the value of the diameter of the next wood calculated in the controller, the controller stops the movement of the single roller cutter table. At this time, the single roller cutter table stops at the new designated position. After the single roller cutter table stops at the new designated position, the controller starts the horizontal cylinder again, so that the horizontal cylinder pushes out the supporting roller. After the supporting roller is pushed into place, the controller starts the second conveyor chain again, thereby realizing the rounding work of the next wood. During the continuous retreat of the single roller cutter table, the wood that has completed the rounding falls from between the single roller and the double-row rollers and moves out of the rounding interval.

[0018] Furthermore, during the process of rounding the wood, when the displacement detection photoelectric switch detects that the wood is shifted, the controller starts the corresponding reset cylinder, and the reset cylinder pushes the shifted wood back into the rounding interval during the extension process.

[0019] The beneficial effects of the present invention are as follows: the present invention has a simple structure and is safe and convenient to use; under the control of a controller, the present invention realizes the automated operation of the process from wood loading to rounding, thereby eliminating the need for manual intervention, greatly improving the safety performance of wood rounding and reducing the labor costs of enterprises; further, the wood rounding adopts automated technology, which can greatly improve the efficiency of wood rounding compared to manual rounding; the use of support rollers to lift the wood can prevent the wood from falling in the early stage of wood rounding, thereby facilitating the smooth progress of wood rounding; the present control method can be used to realize the rounding processing of wood of different diameters, and at the same time, the rounding time can be freely set according to customer needs, thereby realizing different rounding needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is the overall structural diagram of the circle finding machine;

[0023] Figure 3 It is a schematic diagram of the distribution of the rounding auxiliary support mechanism under the single roller and the double-row roller;

[0024] Figure 4 It is a schematic diagram of the distribution of the shift detection photoelectric switch and the material detection photoelectric switch under the single roller;

[0025] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0027] Figure 7 for Figure 4 Enlarged view of point C in the middle;

[0028] Figure 8 It is a structural diagram of the first-level feeding mechanism;

[0029] Fig. 9 It is a structural schematic diagram of the secondary feeding mechanism;

[0030] In the figure: 1 supporting frame, 11 first oil cylinder, 12 spur rack, 13 controller, 21 single roller cutter table, 22 single roller, 23 fixed plate, 24 cutting knife, 241 first fixed hole, 242 second fixed hole, 25 synchronous connecting shaft, 251 synchronous gear, 3 double row rollers, 41 supporting roller, 411 supporting gear, 42 horizontal oil cylinder, 43 supporting triangle plate, 51 reset oil cylinder, 6 second supporting frame, 61 second conveying chain, 62 second hook, 63 material dividing triangle plate, 64 secondary stock detection photoelectric switch, 65 wood diameter detection photoelectric switch 66 primary stock detection photoelectric switch, 67 second guide rail, 7 first supporting frame, 71 first conveying chain, 72 first hook, 73 first guide rail, 81 tilting supporting plate, 82 anti-jump detection photoelectric switch, 101 position encoder, 102 speed encoder, 103 displacement detection photoelectric switch, 104 material detection photoelectric switch. DETAILED DESCRIPTION

[0031] The following will be combined with specific embodiments and attached Figure 1-9 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the present invention, rather than all the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] The present invention provides a fully automatic rounding machine for wood, comprising a rounding machine, a primary feeding mechanism, a secondary feeding mechanism and a controller 13. The rounding machine comprises a supporting frame 1, a single roller 22, a cutting knife 24, a double-row roller 3 and a synchronous limiting mechanism for a single-roller tool platform. The single roller 22 and the cutting knife 24 are arranged on a single-roller tool platform 21 arranged on the supporting frame 1. The cutting knife 24 is arranged on a tool fixing plate 23 arranged obliquely below the single roller 22. In actual application, the cutting knife 24 can be used to achieve rounding cutting of wood. Both ends of the single-roller tool platform 21 are clamped on the supporting frame 1. The single roller 22 and the cutting knife 24 are arranged on a single-roller tool platform 21 arranged on the supporting frame 1. The knife platform 21 can realize reciprocating motion on the supporting frame 1 by being driven by the first oil cylinder 12 arranged on the supporting frame 1. The double-row roller 3 is arranged on the supporting frame 1 and is opposite to the single roller 22. There is a rounding interval between the single roller 22 and the double-row roller 3. When rounding the wood, the single roller 22 and the double-row roller 3 can clamp the wood and drive the wood to roll continuously. During the continuous rolling of the wood, the cutting knife 24 cuts the circumferential side wall of the wood to find the roundness. The structures of the single roller 22 and the double-row roller 3 and their rotation driving methods are both mature technologies in the prior art. Therefore, for the single roller 22, the double-row roller 3 is described in detail. The detailed driving technical scheme of the single-roller tool platform 22 and the double-row roller 3 is no longer described in detail. The single-roller tool platform synchronous limiting mechanism includes a spur rack 11, a synchronous gear 251 and a synchronous connecting shaft 25. The two spur racks 11 are relatively arranged on the supporting frame 1 and are located on both sides of the single-roller tool platform 21. The synchronous connecting shaft 25 is arranged on the single-roller tool platform 21. The synchronous gear 251 matched with the spur rack 11 is respectively arranged at both ends of the synchronous connecting shaft 25. When the synchronous connecting shaft 25 follows the movement of the single-roller tool platform 21, the synchronous gear 251 rotates on the spur rack 11. Movement, the first-level feeding mechanism includes a first support frame 7 and a first conveying chain 71, a plurality of the first conveying chains 71 are horizontally arranged side by side on the first support frame 7 along the length direction of the first support frame 7, a plurality of first hooks 72 are arranged on the first conveying chain 71, when the first conveying chain 71 is running, the wood on the first support frame 7 can be driven to move by the first hooks 72, the driving technical scheme of the first conveying chain 71 and the installation and fixing method of the first hooks 72 on the first conveying chain 71 are existing mature technologies in this field, so they are not described in detail here.

[0033] The secondary feeding mechanism includes a second support frame 6, a second conveying chain 61, a primary material storage detection photoelectric switch 66, a wood diameter detection photoelectric switch 65 and a secondary material storage detection photoelectric switch 64. The second support frame 6 is arranged at the front end of the discharge side of the first support frame 7. Two second conveying chains 61 are arranged side by side on the second support frame 6, and the second conveying chains 61 are distributed in an inclined state. The wood transported by the first conveying chain 71 can fall into the lower end side of the second conveying chain 61, and then the wood can be transported from the primary feeding mechanism to the secondary feeding mechanism. In actual application, in order to ensure that the wood on the first conveying chain 71 smoothly enters the lower end side of the second conveying chain 61, a photoelectric switch connected to the second conveying chain 65 is arranged on the first support frame 7. The first guide rail 73 adjacent to the lower end of the conveying chain 61, the first-level stock detection photoelectric switch 66 is used to detect whether there is wood on the lower end side of the second conveying chain 61, and a plurality of second hooks 62 are arranged between the two second conveying chains 61. When the second conveying chain 61 is running, the wood on it can be driven to move to the high end side of the second conveying chain 61 through the second hooks 62. The wood diameter detection photoelectric switch 65 is arranged on the second support frame 6 and is located below the area between the two second conveying chains 61. The second-level stock detection photoelectric switch 64 is used to detect whether there is wood on the high end side of the second conveying chain 61. The driving technical scheme of the second conveying chain 61 and the second hooks 62 on the two second conveying chains 61 The installation and fixing method is a mature technology in this field, so it will not be described in detail here. The wood that falls on the high-end side of the second conveying chain 61 can enter the circle-finding interval between the single roller 22 and the double-row roller 3. In actual applications, in order to ensure that the wood on the high-end side of the second conveying chain 61 smoothly enters the circle-finding interval, a second guide rail 67 adjacent to the high end of the second conveying chain 61 is arranged on the supporting frame 1. Furthermore, in order to ensure that the wood diameter detection photoelectric switch 65 accurately detects the diameter of a piece of wood each time, a dividing triangle plate 63 is arranged on one side of each of the second conveying chains 61. The wood conveyed by the second conveying chain 61 through the second hook 62 is moved through the dividing triangle plate 63 before being moved by the wood. The wood diameter detection photoelectric switch 65 detects that the function of the dividing triangle plate 63 is to ensure that the second hook 62 transports one piece of wood to the detection area of ​​the wood diameter detection photoelectric switch 65 each time. The dividing triangle plate 63 realizes the separation of the two woods on the second hook 62 in the following principle process: when the second hook 62 carries two side-by-side woods and moves slowly toward the dividing triangle plate 63, when the wood adjacent to the dividing triangle plate 63 contacts the dividing triangle plate 63, as the wood continues to move, the wood in contact with the dividing triangle plate 63 is gradually lifted up by the dividing triangle plate 63 and gradually moves to the top of the wood adjacent to it. As the second conveying chain 61 continues to move, the wood on the dividing triangle plate 63 will completely move to the top of the wood adjacent to it. At this time,The wood at the upper part loses the blocking effect of the second hook 62, and under the action of gravity, it rolls down from above the second hook 62, thereby realizing the material dividing function of the material dividing triangle plate 63.

[0034] The rounding machine also includes a wood displacement limiting mechanism and a rounding auxiliary support mechanism. The single-roller tool table synchronous limiting mechanism also includes a position encoder 101. The position encoder 101 is arranged at one end of the synchronous connecting shaft 25, and the position encoder 101 can rotate coaxially with the synchronous gear 251 adjacent thereto. In practical applications, the position encoder 101 is used to detect the moving distance of the single-roller tool table 21 in real time; the wood displacement limiting mechanism includes a displacement detection photoelectric switch 103 and a reset cylinder 51, and two are relatively arranged on the tool fixing plate 24 and the cutting knife 23. The first fixing hole 241 is located below the two ends of the single roller 22, and the shift detection photoelectric switch 104 is arranged in the first fixing hole 241. The two reset cylinders 51 are relatively arranged on both sides of the circle finding interval. During the circle finding work, when one end of the wood is displaced and detected by a corresponding shift detection photoelectric switch 103, the corresponding reset cylinder 51 will be started to push the displaced wood back to the circle finding position; the circle finding auxiliary support mechanism includes a supporting roller 41, a horizontal cylinder 42 and a supporting triangle plate 43, and the two horizontal cylinders 42 are relatively arranged The rear end of the horizontal oil cylinder 42 is hinged on the supporting frame 1 below the double-row rollers 3, and the supporting roller 41 is arranged at the front end of the movable rods of the two horizontal oil cylinders 42. The horizontal oil cylinder 42 can push the supporting roller 41 horizontally and make the supporting roller 41 stay below the circle-finding interval. By setting the stroke of the horizontal oil cylinder 42, the position of the supporting roller 41 can be fixed. In this specific embodiment, the position of the supporting roller 41 is fixed each time it is pushed out. The supporting roller 41 can rotate freely relative to the movable rod of the horizontal oil cylinder 42. A plurality of supporting triangle plates 43 are arranged on the knife On the fixed plate 24, when the supporting triangle plate 43 follows the single-roller tool table 21 to move toward the supporting roller 41, after the supporting triangle plate 43 contacts the supporting roller 41, as the supporting triangle plate 43 continues to move, the supporting roller 41 is gradually lifted up by the inclined surface of the supporting triangle plate 43; in order to facilitate the synchronous rotation of the supporting roller 41 and the wood, a plurality of supporting gears 411 are provided on the supporting roller 41, and the gaps between the supporting gears 411 and the corresponding two supporting triangle plates 43 are opposite to each other, thereby avoiding interference between the supporting gears 411 and the supporting triangle plates 43.

[0035] A speed encoder 102 is provided at one end of one of the rotating rollers on the double-row rollers 3, and the speed encoder 102 rotates coaxially with the corresponding rotating roller; an oil pressure sensor is provided on the oil inlet pipe extending from the first oil cylinder 12;

[0036] The controller 13 can control the operation of the single roller 22, the double-row rollers 3, the first oil cylinder 12, the reset oil cylinder 51, the horizontal oil cylinder 42, the first conveyor chain 71 and the second conveyor chain 61; in actual applications, the electrical control components and hydraulic components related to the operation of the first oil cylinder 12, the reset oil cylinder 51 and the horizontal oil cylinder 42 are all mature technologies in this field, so here, the above-mentioned matching electrical control components and hydraulic components are no longer described in detail, the first-level stock detection photoelectric switch 66, the wood diameter detection photoelectric switch 65, the second-level stock detection photoelectric switch 64, the shift detection photoelectric switch 103, the position encoder 101 and the speed encoder 102 are connected.

[0037] During the circle finding process, in order to facilitate the detection of whether there is always wood in the circle finding interval, two second fixing holes 242 are arranged between the two first fixing holes 241, and a material detection photoelectric switch 104 is arranged in the second fixing hole 242, and the material detection photoelectric switch 104 is connected to the controller 13. Furthermore, during the initial circle finding process, in order to facilitate the detection of whether the wood jumps up (that is, during the circle finding process, the wood jumps out of the circle finding interval between the single roller 22 and the double-row rollers 3, and jumps above the single roller 22 and the double-row rollers 3, and the next circle finding work cannot be performed), two inclined support plates 81 are arranged on the single-roller tool holder 21, which are respectively located on the rear sides of the two ends of the single roller 22, and the inclined support plates 81 are inclined toward the circle finding interval between the single roller 22 and the double-row rollers 3. An anti-jump detection photoelectric switch 82 for detecting the upper area of ​​the circle finding interval is arranged on the inclined support plate 81, and the anti-jump detection photoelectric switch 82 is connected to the controller.

[0038] The present invention also provides a rounding control method for a wood full-automatic rounding machine, comprising the following steps:

[0039] S1, placing a certain amount of cut wood onto the first support frame 7;

[0040] S2, start the controller 13, the controller 13 starts the single roller 22 and the double-row roller 3, so that the single roller 22 and the double-row roller 3 rotate, and the single roller 22 is in the initial working position close to the double-row roller 33 (this position is the starting position of the position encoder 101 for distance measurement), and at the same time, the controller 13 puts the other components into a standby state;

[0041] S3, when the primary stock detection photoelectric switch 66 detects that there is no wood on the lower end side of the second conveyor chain 61, the controller 13 starts the first conveyor chain 71. As the first conveyor chain 71 runs, the wood at the discharging end of the first support frame 7 falls to the lower end side of the second conveyor chain 61 under the push of the first hook 72, and then the wood is transported from the primary feeding mechanism to the secondary feeding mechanism. When the primary stock detection photoelectric switch 66 detects that there is wood on the lower end side of the second conveyor chain 61, the controller 13 stops the operation of the first conveyor chain 71, and repeats the above process to ensure that there is always wood on the lower end side of the second conveyor chain 61.

[0042] S4. When the secondary material storage detection photoelectric switch 64 detects that there is no wood on the high end side of the second conveyor chain 61, the controller 13 starts the second conveyor chain 61. During the operation of the second conveyor chain 61, the wood on the low end side of the second conveyor chain 61 is transported to the high end side of the second conveyor chain 61. When the secondary material storage detection photoelectric switch 64 detects that there is wood on the high end side of the second conveyor chain 61, the controller 13 stops the operation of the second conveyor chain 61. Repeating the above process can ensure that there is always wood on the high end side of the second conveyor chain 61. During the process of the second conveyor chain 61 transporting the wood to its high end side, the wood diameter detection photoelectric switch 65 will continue to detect the wood for a period of time. When the wood is from the wood diameter detection photoelectric switch 65, the controller 13 stops the operation of the second conveyor chain 61. After the wood disappears from the detection range, the controller 13 calculates the corresponding wood diameter according to the running speed of the second conveyor chain 61 and the length of time that the wood diameter detection photoelectric switch 65 continuously detects the wood. Then, the controller 13 starts the first oil cylinder 12 to retract the first oil cylinder 12. The retraction of the first oil cylinder 12 drives the single-roller knife table 22 to move backward. During the backward movement of the single-roller knife table 22, the position encoder 101 sends the numerical value L of the moving distance to the controller 13 in real time. The controller 13 compares the numerical value L of the moving distance with the calculated wood diameter in real time. When the numerical value L of the moving distance is equal to the wood diameter, the controller 13 stops the operation of the first oil cylinder 12. At this time, the single-roller knife table 21 moves to the specified position. The single-roller knife table 21 moves After reaching the designated position, the controller 13 starts the horizontal cylinder 42, so that the horizontal cylinder 42 pushes the supporting roller 41 out (in actual application, the time taken for pushing out the supporting roller 41 can be shortened as much as possible). After the supporting roller 41 is pushed into place, the controller 13 starts the second conveyor chain 61 again. The operation of the second conveyor chain 61 causes the wood on the high end side of the second conveyor chain 61 to fall directly into the circle-finding interval between the single roller 22 and the double-row rollers 3. When the material detection photoelectric switch 104 detects that there is wood in the circle-finding interval, the controller 13 causes the anti-jump detection photoelectric switch 82 to enter the detection state, and starts the first cylinder 12 again, so that the first cylinder 12 pushes the single-roller knife table 21 to move slowly toward the wood. During the movement of the material, the supporting triangle plate 43 gradually lifts the supporting roller 41, and then the supporting roller 41 lifts the wood, so that the single roller 22 and the double-row roller 3 can effectively clamp the wood. During the clamping process, as the wood continues to rotate, the wood is cut and rounded. During the initial rounding and cutting process, when the wood jumps up out of the rounding interval, at this time, the material detection photoelectric switch 104 does not send a detection signal, while the anti-jump detection photoelectric switch 82 sends a detection signal. After the controller receives the detection signal sent by the anti-jump detection photoelectric switch 82, the controller enables the first oil cylinder 12 to enter the return-to-position wood-finding working process. In the return-to-position wood-finding working process, the first oil cylinder 12 continuously retreats to the initial working position. During the continuous retreat of the first oil cylinder 12,As the space in the circle-finding interval continues to increase, the wood falls back into the circle-finding interval under the action of gravity. At this time, the material detection photoelectric switch 104 sends a detection signal, while the anti-jump detection photoelectric switch 82 does not send a detection signal. The controller stops the retreat of the first oil cylinder 12 based on the detection signal sent by the material detection photoelectric switch 104, and slowly advances the first oil cylinder 12 again, and then enters the continuous circle-finding cutting process. During the continuous circle-finding cutting process, the controller 13 monitors the detection data of the oil pressure sensor and the speed encoder 102 in real time (when the wood starts to find a circle, the wood is irregular, and the resistance to the first oil cylinder 12 and the double-row rollers 3 is unstable during the rotation of the wood, which makes the pressure in the first oil cylinder 12 and the double-row rollers 3 unstable). The rotation speed of the row of rollers 3 is unstable, and there is a phenomenon that the pressure of the first oil cylinder 12 increases instantly and the rotation speed of the double-row rollers 3 increases instantly. When the detection data of the oil pressure sensor and the speed encoder 102 reach the upper limit value set in the controller 13, the controller 13 makes the single-roller tool platform 21 retreat a certain distance (the stopping position distance after retreating is smaller than the starting position distance), and then makes the single-roller tool platform 21 move forward. In the above-mentioned continuous circular cutting process of the wood, when the detection data of the oil pressure sensor and the speed encoder 102 reach the lower limit value set in the controller 13 (at this time, the shape of the wood has basically reached a regular state after a period of circular cutting, so that the resistance of the first oil cylinder 12 and the double-row rollers 3 is relatively stable), the controller 13 The controller 13 causes the single-roller tool platform 21 to enter a uniform forward state. During the process of the single-roller tool platform 21 continuously advancing at a uniform speed for a period of time T1, when the single-roller tool platform 21 continuously advances at a uniform speed for an initial period of time T2 (T2 is less than T1, and the difference between them can be set to two seconds), the controller 13 starts the horizontal oil cylinder 42 to return the supporting roller 41 to the initial position; after the single-roller tool platform 21 continuously advances at a uniform speed for a period of time T1 (the size of T1 can be set according to the needs of the user, when T1 is larger, its rounding time is longer, and the degree of rounding of the wood is better; when T1 is smaller, its rounding time is shorter, and the degree of rounding of the wood is worse), the controller 13 stops the single-roller tool platform 21 from advancing, and then causes the single-roller tool platform 21 to retreat. During the retreat of the single-roller tool platform 21 The position encoder 101 detects the value L of the moving distance during the retreat of the single roller cutter table 21 in real time. When the value L of the moving distance is equal to the value of the diameter of the next wood calculated in the controller 13, the controller 13 stops the movement of the single roller cutter table 21. At this time, the single roller cutter table 21 stops at the new designated position. After the single roller cutter table 21 stops at the new designated position, the controller 13 starts the horizontal cylinder 42 again, so that the horizontal cylinder 42 pushes the support roller 41 out. After the support roller 41 is pushed into place, the controller 13 starts the second conveying chain 61 again, thereby realizing the rounding work of the next wood. During the continuous retreat of the single roller cutter table 21, the wood that has completed the rounding falls from between the single roller 22 and the double-row rollers 3 and moves out of the rounding interval.

[0043] Furthermore, during the wood rounding process, when the displacement detection photoelectric switch 103 detects that the wood is shifted, the controller 13 starts the corresponding reset cylinder 51, and the reset cylinder 51 pushes the shifted wood back into the rounding interval during the extension process.

[0044] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0045] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the present invention, but the present invention is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fully automatic rounding machine for wood, comprising a rounding machine, the rounding machine comprising a supporting frame, a single roller, a cutting knife, a double-row roller and a synchronous limiting mechanism for a single-roller cutter platform, the single roller and the cutting knife are arranged on a single-roller cutter platform arranged on the supporting frame, the cutting knife is arranged on a cutter fixing plate arranged obliquely below the single roller, both ends of the single-roller cutter platform are clamped on the supporting frame, the single-roller cutter platform can realize reciprocating motion on the supporting frame by being driven by a first oil cylinder arranged on the supporting frame, the double-row roller is arranged on the supporting frame and is opposite to the single roller, the single roller and the double-row roller are arranged on the supporting frame, and the single roller and the double-row roller are arranged on the supporting frame. There is a rounding interval between the rows of rollers. When the wood is rounded, the single roller and the double-row rollers clamp the wood and drive the wood to roll continuously. During the continuous rolling of the wood, the cutting knife cuts the circumferential side wall of the wood to find the rounding. The single-roller tool platform synchronous limiting mechanism includes a spur rack, a synchronous gear and a synchronous connecting shaft. The two spur racks are relatively arranged on the supporting frame and are located on both sides of the single-roller tool platform. The synchronous connecting shaft is arranged on the single-roller tool platform. The synchronous gears matched with the spur racks are respectively arranged at both ends of the synchronous connecting shaft. It is characterized in that: The fully automatic wood rounding machine also includes a primary feeding mechanism, a secondary feeding mechanism and a controller. The primary feeding mechanism includes a first support frame and a first conveying chain. A plurality of the first conveying chains are horizontally arranged side by side on the first support frame along the length direction of the first support frame. A plurality of first hooks are arranged on the first conveying chain. When the first conveying chain is running, the wood on the first support frame can be driven to move by the first hooks. The secondary feeding mechanism includes a second support frame, a second conveying chain, a primary material storage detection photoelectric switch, a wood diameter detection photoelectric switch and a secondary material storage detection photoelectric switch. The second support frame is arranged at the front end of the discharging side of the first support frame. Two second conveying chains are arranged side by side on the second support frame, and the second conveying chains are distributed in an inclined state. The wood transported by the first conveying chain can fall into the lower end side of the second conveying chain. The primary material storage detection photoelectric switch is used to detect whether there is wood on the lower end side of the second conveying chain. A plurality of second hooks are arranged between the two second conveying chains. When the second conveying chain is running, the wood on it can be driven to move to the high end side of the second conveying chain through the second hooks. The wood diameter detection photoelectric switch is arranged on the second support frame and is located below the area between the two second conveying chains. The secondary material storage detection photoelectric switch is used to detect whether there is wood on the high end side of the second conveying chain. The wood falling from the high end side of the second conveying chain can enter the circle finding interval between the single roller and the double-row rollers. The rounding machine also includes a wood shifting limit mechanism and a rounding auxiliary support mechanism. The single-roller tool table synchronous limit mechanism also includes a position encoder, which is arranged at one end of the synchronous connecting shaft, and the position encoder can rotate coaxially with the synchronous gear adjacent thereto; the wood shifting limit mechanism includes a shift detection photoelectric switch and a reset cylinder, and two first fixing holes located below the two ends of the single roller are relatively arranged on the tool fixing plate and the cutting knife, and the shift detection photoelectric switch is arranged in the first fixing hole. The two reset cylinders are relatively arranged on both sides of the rounding interval; the rounding auxiliary support mechanism includes a supporting roller , a horizontal oil cylinder and a supporting triangle plate, the two horizontal oil cylinders are relatively arranged below the double-row rollers, and the rear ends of the horizontal oil cylinders are hinged on the supporting frame, the supporting rollers are arranged at the front ends of the movable rods of the two horizontal oil cylinders, the horizontal oil cylinders can push the supporting rollers horizontally and make the supporting rollers stay below the circle-finding interval, and the supporting rollers can rotate freely relative to the movable rods of the horizontal oil cylinders; a plurality of supporting triangle plates are arranged on the tool fixing plate, and in the process of the supporting triangle plates following the single-roller tool table to move toward the supporting rollers, when the supporting triangle plates contact the supporting rollers, as the supporting triangle plates continue to move, the supporting rollers are gradually lifted up by the inclined surfaces of the supporting triangle plates; A speed encoder is arranged at one end of one of the rotating rollers on the double-row rollers, and the speed encoder rotates coaxially with the corresponding rotating roller; an oil pressure sensor is arranged on the oil inlet pipe extending from the first oil cylinder; The controller can control the operation of a single roller, a double row of rollers, a first oil cylinder, a reset oil cylinder, a horizontal oil cylinder, a first conveyor chain and a second conveyor chain; the first-level stock detection photoelectric switch, the wood diameter detection photoelectric switch, the second-level stock detection photoelectric switch, the shift detection photoelectric switch, the position encoder and the speed encoder are connected.

2. The fully automatic wood rounding machine according to claim 1 is characterized in that: Two second fixing holes are arranged between the two first fixing holes, and a material detection photoelectric switch is arranged in the second fixing holes. The material detection photoelectric switch is connected to the controller.

3. The fully automatic rounding machine for wood according to claim 2 is characterized in that: A plurality of supporting gears are arranged on the supporting roller, and the supporting gears are opposite to the gaps between the corresponding two supporting triangle plates.

4. The fully automatic wood rounding machine according to claim 3 is characterized in that: A dividing triangle plate is arranged on one side of each of the second conveying chains. The wood conveyed by the second conveying chain through the second hook moves through the dividing triangle plate and is detected by the wood diameter detection photoelectric switch.

5. The fully automatic rounding machine for wood according to claim 4 is characterized in that: Two inclined support plates are arranged on the single-roller tool table, which are respectively located on the rear sides of the two ends of the single roller, and the inclined support plates are inclined toward the circle finding interval between the single roller and the double-row rollers. An anti-jump detection photoelectric switch for detecting the upper area of ​​the circle finding interval is arranged on the inclined support plate, and the anti-jump detection photoelectric switch is connected to the controller.

6. A rounding control method for a wood full-automatic rounding machine according to claim 5, characterized in that: The following steps are involved: S1. Place a certain amount of cut wood onto the first support frame; S2, start the controller, the controller starts the single roller and the double-row rollers, so that the single roller and the double-row rollers rotate, and the single roller is in the initial working position close to the double-row rollers. At the same time, the controller makes the other components enter the standby state; S3, when the primary material storage detection photoelectric switch detects that there is no wood on the lower end side of the second conveyor chain, the controller starts the first conveyor chain. As the first conveyor chain runs, the wood at the discharging end of the first support frame falls to the lower end side of the second conveyor chain under the push of the first hook. When the primary material storage detection photoelectric switch detects that there is wood on the lower end side of the second conveyor chain, the controller stops the operation of the first conveyor chain. The above process is repeated to ensure that there is always wood on the lower end side of the second conveyor chain. S4. When the secondary material storage detection photoelectric switch detects that there is no wood on the high end side of the second conveyor chain, the controller starts the second conveyor chain. During the operation of the second conveyor chain, the wood on the low end side of the second conveyor chain is transported to the high end side of the second conveyor chain. When the secondary material storage detection photoelectric switch detects that there is wood on the high end side of the second conveyor chain, the controller stops the operation of the second conveyor chain and repeats the above process to ensure that there is always wood on the high end side of the second conveyor chain. During the process of the second conveyor chain transporting wood to its high end side, the wood diameter detection photoelectric switch will continue to detect the wood for a period of time. When the wood disappears from the detection range of the wood diameter detection photoelectric switch, the controller will detect the wood according to the running speed of the second conveyor chain and the wood diameter. The diameter detection photoelectric switch continuously detects the length of time that the wood is moved to calculate the corresponding diameter of the wood. Then, the controller starts the first oil cylinder to retract the first oil cylinder. The retraction of the first oil cylinder drives the single-roller knife table to move backward. During the backward movement of the single-roller knife table, the position encoder sends the numerical value L of the moving position to the controller in real time. The controller compares the numerical value L of the moving position with the calculated wood diameter in real time. When the numerical value L of the moving position is equal to the wood diameter, the controller stops the operation of the first oil cylinder. At this time, the single-roller knife table moves to the specified position. After the single-roller knife table moves to the specified position, the controller starts the horizontal oil cylinder so that the horizontal oil cylinder pushes the support roller out. After the support roller is pushed into place, the controller starts the second conveyor chain again. The operation of the conveyor chain causes the wood on the high end side of the second conveyor chain to fall directly into the circle-finding interval between the single roller and the double-row rollers. When the material detection photoelectric switch detects the presence of wood in the circle-finding interval, the controller causes the anti-jump detection photoelectric switch to enter the detection state and starts the first oil cylinder again, causing the first oil cylinder to push the single-roller knife table to move slowly toward the wood. In the process of the single-roller knife table slowly moving toward the wood, the supporting triangle plate gradually lifts the supporting roller, thereby realizing the lifting of the wood by the supporting roller, thereby realizing the effective clamping of the wood by the single roller and the double-row rollers. During the clamping process, as the wood continues to rotate, the cutting and circle-finding of the wood is realized. In the initial circle-finding and cutting process, when the wood jumps out of the circle-finding interval upward, the material detection photoelectric switch does not emit a signal. The controller sends out a detection signal, and the anti-jump detection photoelectric switch sends out a detection signal. After the controller receives the detection signal sent by the anti-jump detection photoelectric switch, the controller enables the first oil cylinder to enter the return wood finding work process. In the return wood finding work process, the first oil cylinder continuously retreats to the initial working position. During the continuous retreat of the first oil cylinder, as the space in the circle finding interval continues to increase, the wood falls back into the circle finding interval under the action of gravity. At this time, the material detection photoelectric switch sends out a detection signal, while the anti-jump detection photoelectric switch does not send out a detection signal. The controller stops the retreat of the first oil cylinder based on the detection signal sent by the material detection photoelectric switch, and slowly advances the first oil cylinder again, and then enters the continuous circle finding and cutting process. During the continuous circle finding and cutting process,The controller monitors the detection data of the oil pressure sensor and the speed encoder in real time. When the detection data of the oil pressure sensor and the speed encoder reach the upper limit values ​​set in the controller, the controller makes the single-roller knife table retreat a certain distance, and the retreat distance is less than the initial forward distance of the single-roller knife table. Then, the single-roller knife table is advanced again. During the above-mentioned continuous rounding and cutting process of the wood, when the detection data of the oil pressure sensor and the speed encoder reach the lower limit values ​​set in the controller, the controller makes the single-roller knife table enter a uniform forward state. During the process of the single-roller knife table continuously advancing at a uniform speed for a period of time T1, when the single-roller knife table continuously advances at a uniform speed for a period of time T2, T2 is less than T1, the controller starts the horizontal oil cylinder to make the support roller return to the initial position, and the controller simultaneously stops the starting power of the anti-jump detection switch; the single-roller knife table continues to advance at a uniform speed for a period of time T1. After continuing to move forward at a constant speed for a period of time T1, the controller stops the single roller cutter table from moving forward, and then makes the single roller cutter table retreat. During the retreat of the single roller cutter table, the position encoder detects the value L of the moving position in real time during the retreat of the single roller cutter table. When the value L of the moving position is equal to the value of the diameter of the next wood calculated in the controller, the controller stops the movement of the single roller cutter table. At this time, the single roller cutter table stops at the new designated position. After the single roller cutter table stops at the new designated position, the controller starts the horizontal cylinder again, so that the horizontal cylinder pushes out the supporting roller. After the supporting roller is pushed into place, the controller starts the second conveyor chain again, thereby realizing the rounding work of the next wood. During the continuous retreat of the single roller cutter table, the wood that has completed the rounding falls from between the single roller and the double-row rollers and moves out of the rounding interval.

7. The method for controlling the rounding of a wood full-automatic rounding machine according to claim 6, characterized in that: During the continuous rounding process of the wood, when the displacement detection photoelectric switch detects the displacement of the wood, the controller starts the corresponding reset cylinder, and the reset cylinder pushes the displaced wood back into the rounding interval during the extension process.

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