CN211917082U - An automatic energy-saving feeding cutting woodworking sawing machine - Google Patents

Abstract

The utility model relates to the field of woodworking machinery, and provides an automatic energy-saving feeding and cutting woodworking sawing machine. Conveyors, square wood conveyors, square wood multi-blade saws and double-cut milling cutters, each set of CNC band saw units includes two symmetrically arranged CNC band saw units, and each CNC band saw unit includes at least two band saw machines , drive motor, multiple sets of synchronous wheel sets, transition wheel shafts and multiple sets of transition pulleys, the output shaft of the drive motor is connected to and drives the band saw machine located near the input end of the log to rotate and cut the log, and the output shaft of the drive motor is also passed through the synchronous wheel set. Connect and drive the transition wheel shaft to rotate, and each group of transition pulleys on the transition wheel shaft are respectively connected through the synchronous wheel group and drive the other band saw machines to rotate and cut logs. The utility model solves the problem of high energy consumption in the existing log processing.

Description

An automatic energy-saving feeding cutting woodworking sawing machine

technical field

The utility model relates to woodworking machinery, in particular to an automatic energy-saving material feeding and cutting woodworking sawing machine.

Background technique

At present, the traditional method of sawing and cutting logs for wood processing and production is sports car band saw, which is produced manually by a single machine, with low efficiency and high labor costs. In general, the production of sawn timber requires the following processes from the feeding of the log to the finished product: 1. Saw on the log; 2. Jam; 3. Calculation; 4. Ruler; 5. Multiple reciprocating sawing; 7. Second saw sawing; 8. Lifting the board; each link is manual operation, which is a heavy manual labor. In the traditional processing and production of the above processes, on average, each process is completed by 2 people, and the combined daily processing capacity of 6 people is 15-20 cubic meters of logs (8 hours). Relatively wasteful, because of all manual production, the operator's risk factor is also high. The general saw blade of the sports car band saw needs to be rolled manually, and the saw blade teeth are artificially toothed, so the precision is low, the flatness of the processed plate sawing surface is poor, the sawing path is large, and the yield rate is low. For this reason, automatic log processing sawing machines came into being. Due to the low efficiency of band saws, the existing automatic log processing sawing machines basically use multi-blade saws for cutting, but the loss of multi-blade saws is much greater than that of band saws. Under the increasingly high situation, the use of multi-blade saws for automated processing significantly increases the loss of wood and increases the cost of wood processing. At the same time, most of the logs are irregular, so how to effectively select the most straight line for feeding to save wood loss and improve logs. Utilization is also an urgent problem to be solved. For this reason, our company has developed a woodworking sawing machine based on multiple sets of numerically controlled band saws. For details, please refer to the Chinese patent document: CN201821543995.6 A fully automatic feeding and cutting woodworking sawing machine. However, the fully automatic feeding and cutting woodworking sawing machine still has the problem that the energy consumption of each group of CNC band saws driven separately is large.

Utility model content

Therefore, in view of the above-mentioned problems, the present utility model proposes an automatic energy-saving feeding and cutting woodworking sawing machine with reasonable structure, which can process logs fully and fully, with low overall energy consumption and good energy-saving effect.

In order to solve this technical problem, the utility model adopts the following scheme: An automatic energy-saving material feeding and cutting woodworking sawing machine, including a PLC controller, a log conveying mechanism, at least one group of numerically controlled band saw units, a first pressing material conveying frame, and a board and gang separation Machine, board conveyor, square wood conveying frame, square wood multi-blade saw and double-cut milling cutter, the log conveying mechanism conveys the log through the first pressing conveying frame to press and adjust the straight surface of the log and transport it to the double-cut milling cutter to be The two sides of the log to be cut are milled to the plane. Each group of CNC band saw units are arranged side by side according to the predetermined size on the double-cut milling cutter to cut the sides of the log after the plane is milled one by one. After cutting, multiple groups of CNC band saws will be cut The logs composed of square wood and veneer are sent to the board and slats separator to separate the veneer and the square wood. The square wood conveying frame conveys the square wood to the square wood multi-blade saw for cutting according to a predetermined size. The log conveying mechanism, the double-cut milling cutter, each group of numerical control band saw machines, the first pressing material conveying frame, and the board-fang separator , The board conveyor, the square wood conveyor and the square wood multi-blade saw are all connected and controlled by the PLC controller. Each group of CNC band saw units includes two symmetrically arranged CNC band saw units. Including at least two band saw machines, drive motors, multiple sets of synchronous wheel sets, transition wheel shafts and multiple sets of transition pulleys, each band saw machine is arranged in parallel and spaced apart, and the band saw of each band saw machine faces the same direction of the logs to be processed. In the processing plane, multiple sets of transition pulleys are respectively arranged on the transition wheel shafts at intervals, the output shaft of the drive motor is connected and drives the band saw machine located near the input end of the log to rotate and cut the log, and the output shaft of the drive motor is also connected and driven by the synchronous wheel set. The transition wheel shaft rotates, and each group of transition pulleys on the transition wheel shaft is respectively connected by a synchronous wheel group and drives the other band saw machines to rotate and cut logs.

Further, the drive motor is a permanent magnet motor.

Further, the numerical control band saw unit also includes a plurality of sets of tensioning mechanisms with the same number as the number of the band saw machines. Press the synchronous belt of each group of synchronous wheel groups.

Further, each group of the tensioning mechanisms includes a tensioning pulley, a connecting rod, and a driving mechanism. One end of the connecting rod is hinged with the tensioning pulley, and the other end of the connecting rod is connected to the frame of the CNC band saw unit. The output end of the driving mechanism is hinged with the middle part of the connecting rod.

Further, each CNC band saw unit includes at least three band saw machines, and the bottom of the band saw machine located in the middle is provided with a sliding mechanism for moving the middle band saw machine to the outside away from the processing position.

Further, it also includes a log detection mechanism and a log overturning and conveying mechanism, the log detection mechanism is an infrared scanner, and the log detection mechanism is set on the discharge end of the log conveying mechanism to detect the outer diameter of the log, the size of the curved structure, and the log detection data. It is conveyed to the PLC controller, and the log overturning conveying mechanism is connected and controlled by the PLC controller. The feeding end of the log overturning conveying mechanism is connected with the discharging end of the log conveying mechanism. The log overturning and conveying mechanism includes a first frame, a A conveyor belt, a first driving unit and a turning mechanism, the conveyor belt is rotatably arranged in the middle of the first frame through the first driving unit, and the feeding end of the conveyor belt is at the same height as the discharging end of the log conveying mechanism and receives the log conveying mechanism The logs to be conveyed, the turning mechanism includes a first support frame, a second support frame, a second drive unit, a third drive unit, a support shaft and a push unit, and the support shaft passes through the first machine along the conveying direction of the conveyor belt. The lower part of the frame, the first support frame and the second support frame are respectively fixed on both ends of the support shaft, the first support frame and the second support frame are both V-shaped and the tops of both sides are provided with a second The driving unit and the rotating gear driven by the third driving unit, the pushing unit is arranged at the lower part of the first frame and the output end of the pushing unit is connected with the support shaft to push the support shaft to lift up and down at the lower part of the first frame to drive the first support frame With the second support frame, the logs are turned up and down, and the turned logs are placed on the conveyor belt and transported to the feed end of the first pressing conveyor. The cutting and milling cutter will flatten both sides of the log to be cut.

Further, it also includes a second pressing material conveying frame, the second pressing material conveying frame is erected between the last CNC band saw machine and the board and fang separator in the log cutting line, and the board skin will be cut by each CNC band saw machine. The back veneer and square wood are transported to the board and fang separator to separate the veneer and square wood.

Further, the upper surface of the conveyor belt of the log overturning conveying mechanism is provided with a plurality of pinch plates with arc-shaped grooves on the upper surface at intervals, and the arc-shaped grooves of each pinch plate are provided with upward serrations. side.

Further, each group of CNC band saw units also includes a band saw stand, and the upper and lower sides of the band saw stand are provided with moving guide rails, and the top and bottom of each band saw of the two CNC band saw units are respectively connected with the band saw stand. The up and down moving guide rails can be slidably connected.

Further, each band saw machine of each CNC band saw unit is provided with a photoelectric switch on the upper part of the fuselage for detecting whether the band saw blade is disconnected, and the photoelectric switch is connected with the input end of the PLC controller.

By adopting the aforementioned technical scheme, the beneficial effect of the present invention is: by adopting two symmetrically arranged numerically-controlled band-saw units for each group of numerically-controlled band-saw units, and each numerically-controlled band-saw unit includes at least two band-saw machines, driving Motor, multiple sets of synchronous wheel sets, transition wheel shafts and multiple sets of transition pulleys, so that one drive motor drives the rest of the band saw machines of each CNC band saw unit to work at the same time, and the output shaft of the drive motor is connected and driven at the same time. The band saw machine close to the input end of the log effectively guarantees the stable power output of the initial band saw machine. At the same time, with the cooperation of the synchronous wheel set, the transition wheel shaft and the transition pulley, it drives the second and third stage band saw machines to synchronously cut logs. , effectively saves the power output of the second and later band saw machines, effectively realizes that the overall energy consumption is greatly reduced, the energy saving effect is good, and the structure is reasonable. It can improve the accuracy of one-time multi-piece processing and save the area of processing space. Combined with the log conveying mechanism, at least one set of CNC band saw units, the first pressing conveyor, the board and Fang separator, the board conveyor, and the square wood conveyor Frame, square wood multi-blade saw, log detection mechanism, log overturning conveying mechanism and double-cut milling cutter to realize fully automatic processing of logs; The power consumption is much smaller than that of the asynchronous motor, and the maximum power output time is short during the loading process, so that it does not need to consume too much power during the entire use process, thereby further improving the energy saving effect. The tensioning mechanism is set on the synchronous belt to effectively ensure the stable performance of the driving power transmission of the second and later band saw machines, and ensure the working efficiency of the second and later band saw machines. At the same time, the tensioning mechanism can also effectively adjust the The belt is loose due to the adjustment of the machine sawing position. When more than three band saws are installed in each CNC band saw unit, the bottom of the band saw in the middle is provided with a sliding mechanism to move the middle band saw to the outside away from the processing position, which is convenient for replacement. The band saw of the band saw machine in the middle adopts the log detection mechanism to detect the outer diameter of the log conveyed by the log conveying mechanism, and transmits the log detection data to the PLC controller. The straightest log is adjusted by the turning mechanism and then lowered. The adjusted log is transported to the first pressing conveyor by the conveyor belt, and the straightest direction of the log is adjusted for cutting, which effectively saves the loss of wood and improves the utilization rate of the log. It is transported by the first pressing material. The frame sends the logs adjusted to the straightest direction with the highest wood utilization rate to the double-cut milling cutter for plane milling on both sides. The plane milling on both sides is convenient for the CNC band saw machine to locate the logs for cutting. The machine cuts the two sides of the log successively according to the predetermined size, and the cutting wood loss of the band saw is low, which can effectively save the wood loss. Accuracy and speed, the band saw machine is located on the upper part of the fuselage with a photoelectric switch to detect whether the band saw blade is disconnected. When the band saw blade is disconnected, the PLC controller will cut the wood immediately The power supply of the driving motor of the numerical control band saw unit is cut off and an alarm is issued to reduce damage, which can be widely popularized and applied.

Description of drawings

Fig. 1 is the top view structure schematic diagram of the log overturning conveying mechanism, the first pressing material conveying frame and the numerical control band saw unit according to the embodiment of the present invention;

Fig. 2 is the structural schematic diagram of the numerical control band saw unit according to the embodiment of the present invention facing the discharge end of the double-cut milling cutter;

FIG. 3 is a schematic top view structure diagram of a numerically controlled band saw unit according to an embodiment of the present invention.

Detailed ways

The present utility model will now be further described with reference to the accompanying drawings and specific embodiments.

1-3, the preferred automatic energy-saving feeding and cutting woodworking sawing machine of the present utility model includes a PLC controller, a log conveying mechanism, a log overturning conveying mechanism 1, a log detection mechanism, a group of numerical control band saw units 2, a first Pressing conveyor 3, the second pressing conveyor, board and Fang separator, board conveyor, square wood conveyor, square wood multi-blade saw and double-cut milling cutter, among which PLC controller, log conveying mechanism, log turning Conveying mechanism 1, log detection mechanism, first pressing material conveying frame 3, second pressing material conveying frame, board-fang separator, board skin conveyor, square wood conveying frame, square wood multi-blade saw and double-cut milling cutter are in the patent In the literature CN201821543995.6 has disclosed its structure in a fully automatic feeding and cutting woodworking sawing machine, so the specific structure will not be described in detail in this embodiment. The log detection mechanism is an infrared scanner, and the log detection mechanism is an infrared scanner. The mechanism is installed on the discharge end of the log conveying mechanism to detect the outer diameter of the log, and to transmit the log detection data to the PLC controller. The log turning and conveying mechanism 1 includes a first frame, a conveyor belt, a first driving unit and a turning mechanism. The conveyor belt is rotatably arranged in the middle of the first frame through the first driving unit, and the feeding end of the conveyor belt is conveyed with the log. The discharge end of the mechanism is at the same height and receives the logs conveyed by the log conveying mechanism. The upper surface of the conveyor belt of the log overturning conveying mechanism 1 is provided with a plurality of pinch plates with arc grooves on the upper surface. The arc-shaped grooves are provided with upward serrated edges, and the turning mechanism includes a first support frame, a second support frame, a second drive unit, a third drive unit, a support shaft and a push unit. The support shaft Pass through the lower part of the first frame along the conveying direction of the conveyor belt, the first support frame and the second support frame are respectively fixed at both ends of the support shaft, and the first support frame and the second support frame are both V-shaped and The tops of both sides and the middle recess are provided with rotating gears driven by the second drive unit and the third drive unit, the push unit is arranged at the lower part of the first frame, and the output end of the push unit is connected with the support shaft to push the support The shaft lifts up and down at the lower part of the first frame and then drives the first support frame and the second support frame to lift and flip the log or descend, and place the flipped log on the conveyor belt and transport it to the feeding end of the first pressing conveyor 3. A pressing conveyor 3 presses the logs whose curved and straight surfaces have been adjusted, and transports them to the double-cut milling cutter to mill the plane on both sides of the logs to be cut. The sides of the logs after the plane are cut successively. The CNC band saw unit 2 includes two symmetrically arranged CNC band saw units 21 and a band saw base 22. The upper and lower sides of the band saw base 22 are provided with moving guide rails. Each band saw unit 21 includes three band saw machines 211 , a drive motor 212 , three sets of synchronous wheel sets 213 , a transition wheel shaft 214 , three sets of transition pulleys 215 and three sets of tensioning mechanisms 216 . The top and bottom of each band saw machine 211 are respectively slidably connected to the up and down moving guide rails of the band saw machine base 22, and the drive motor 212 is a permanent magnet motor, each band saw machine 211 is arranged in parallel and spaced apart and the band saw of each band saw machine 211 faces the same processing plane of the log to be processed, and multiple groups of transition pulleys 215 are respectively arranged on the transition wheel shaft 214 at intervals, The transition wheel shaft 214 is rotatably disposed on the side of the band saw machine 211 away from the processing plane, the output shaft of the drive motor 212 is connected to and drives the band saw machine 211 located near the input end of the log to rotate and cut the log, and the output shaft of the drive motor 212 is also passed through. The synchronous wheel set 213 is connected and drives the transition wheel shaft 214 to rotate. Each group of transition pulleys 215 on the transition wheel shaft 214 is respectively connected by the synchronous wheel set 213 and drives the other band saw machines 211 to rotate and cut logs. Each set of tensioning mechanisms 216 are respectively arranged on the frame of the numerical control band saw unit 21 and located on the synchronous belt of each group of synchronous wheel groups 213 to press the synchronous belt of each group of synchronous wheel groups 213. The tensioning mechanism 216 of each group includes a tension pulley, A connecting rod and a driving mechanism, one end of the connecting rod is hinged with the tensioning pulley, the other end of the connecting rod is hinged with the frame of the numerical control band saw unit 21, and the output end of the driving mechanism is hinged with the middle of the connecting rod, The driving mechanism is an air cylinder. The driving mechanism presses down the connecting rod and then drives the tensioning pulley to press the synchronous belt of the synchronous wheel group 213. The sliding mechanism that moves the band saw machine 211 to the outside away from the processing position is convenient for changing the band saw blade. The sliding mechanism includes a sliding rail, a sliding seat and a motor 4 that drives the sliding seat to move on the sliding rail. At the bottom, each band saw machine 211 of each CNC band saw unit 21 is located on the upper part of the fuselage and is provided with a photoelectric switch 217 for detecting whether the band saw blade is disconnected. The photoelectric switch 217 is connected with the input end of the PLC controller. After the unit 2 is cut, the logs that are cut into square wood and veneer are sent to the slat separator to separate the veneer and the square wood through the second pressing conveying frame. The machine collects, stores and transports the square wood to the square wood conveying frame. The square wood conveying frame conveys the square wood to the square wood for cutting according to the predetermined size. The log conveying mechanism, the first driving unit, the second driving unit, The third drive unit, push unit, double-cut milling cutter, CNC band saw unit 2, the first pressing conveyor, the second pressing conveyor, the board and Fang separator, the board conveyor, the square wood conveyor and the square wood Multiple saws are connected and controlled by PLC controller.

The log detection mechanism in the utility model can also be other detection equipment that can detect the outer diameter and size of the log's outline. It can be used for other power output such as oil cylinder, log conveying mechanism, multiple sets of CNC band saws, the first pressing conveyor, the second pressing conveyor, the board and Fang separator, the board conveyor, the square wood conveyor and the square wood The multi-blade saws are all machines with existing structures, so their specific structures will not be described in detail.

The utility model adopts two symmetrically arranged numerical control band saw units for each group of numerical control band saw units, and each numerical control band saw unit includes at least two band saw machines, a driving motor, multiple sets of synchronous wheel sets, transition wheel shafts and Multiple sets of transition pulleys, so that one drive motor drives the rest of the band saw machines of each CNC band saw unit to work at the same time, and the output shaft of the drive motor is connected to drive the band saw machine located near the input end of the log to effectively ensure that it is located at the initial position. The power output of the band saw machine is stable, and at the same time, with the cooperation of the synchronous wheel set, the transition wheel shaft and the transition pulley, the band saw machines at the second and third levels are driven to cut logs synchronously, which effectively saves the second and later band saws. The power output of the machine effectively realizes the overall energy consumption is greatly reduced, the energy saving effect is good, and the structure is reasonable. Save the area of processing space, combined with the log conveying mechanism, at least one set of CNC band saw units, the first pressing conveyor, the board and Fang separator, the board conveyor, the square wood conveyor, the square wood multi-blade saw, and the log detection mechanism , the log turning conveying mechanism and the double-cut milling cutter can realize the automatic processing of the log in a pipeline; through further settings, the electric power consumed by the permanent magnet motor at no-load is much smaller than that of the asynchronous motor. During the loading process, the maximum power output time is short, so that it does not need to consume too much electrical energy during the entire use process, thereby further improving the effect of energy saving. The stable performance of the drive power transmission of the band saw machine of the second stage and later ensures the working efficiency of the band saw machine of the second stage and later. Each CNC band saw unit is equipped with three or more band saw machines. The bottom of the band saw machine in the middle is provided with a sliding mechanism to move the middle band saw machine to the outside away from the processing position, which is convenient for replacing the band saw of the band saw machine in the middle. The detection mechanism detects the outer diameter of the log conveyed by the log conveying mechanism, and transmits the log detection data to the PLC controller. The PLC controller controls the log overturning conveying mechanism according to the detection data to raise the log through the overturning mechanism to adjust the straightest log and then descend. The adjusted logs are transported to the first pressing conveyor through the conveyor belt, and the straightest direction of the logs is adjusted for cutting, which effectively saves the loss of wood and improves the utilization rate of the logs. The first pressing conveyor will adjust the straightest direction to the highest wood utilization rate The logs in the direction are sent to the double-cut milling cutter for plane milling on both sides. The plane milling on both sides is convenient for the CNC band saw machine to locate the logs for cutting. Cutting the cutting board skin, the band saw cutting wood loss is low, effectively saving wood loss, the setting of the band saw machine base effectively improves the body strength of the entire group of CNC band saw units, and effectively improves the processing accuracy and speed. The band saw machine is located on the upper part of the body There is a photoelectric switch to detect whether the band saw blade is disconnected. When the band saw blade is disconnected from cutting wood, the PLC controller immediately cuts off the drive motor power of the CNC band saw unit and alarms. , reduce damage, and can be widely used.

Although the present invention has been specifically shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Various changes are made to the present utility model, which are all within the protection scope of the present utility model.

Claims (10)

1. An automatic energy-saving feeding and cutting woodworking sawing machine, comprising a PLC controller, a log conveying mechanism, at least one group of numerically controlled band saw units, a first pressing material conveying frame, a board and Fang separator, a board skin conveyor, and a square wood conveying frame. , Square wood multi-blade saw and double-cut milling cutter, the log conveying mechanism conveys the log through the first pressing conveying frame to press and adjust the curved and straight surface of the log and transport it to the double-cut milling cutter to mill the plane on both sides of the log to be cut. Groups of CNC band saw units are arranged side by side according to the predetermined size on the double-cut milling cutter to cut the sides of the logs after milling planes one by one. The board and slat separator separates the board skin and the square wood. The board and Fang separator separates the board skin and sends it to the board skin conveyor for collection and storage, and transports the square wood to the square wood conveying frame. The square wood conveyor conveys the square wood to the square wood. The wood multi-blade saw is cut according to a predetermined size, and the log conveying mechanism, double-cutting milling cutter, each group of CNC band saw machines, the first pressing conveying frame, the board and Fang separator, the board skin conveyor, the square wood conveying frame and the The square wood multi-blade saws are all connected and controlled by a PLC controller, and it is characterized in that: each group of CNC band saw units includes two symmetrically arranged CNC band saw units, and each CNC band saw unit includes at least two band saw machines , drive motor, multiple sets of synchronous wheel sets, transition wheel shafts and multiple sets of transition pulleys, each band saw machine is arranged in parallel and spaced apart, and the band saw of each band saw machine faces the same processing plane of the log to be processed, and multiple sets of transition belts The wheels are respectively arranged on the transition axles at intervals, the output shaft of the drive motor is connected and drives the band saw machine located near the input end of the log to rotate and cut the logs, and the output shaft of the drive motor is also connected through the synchronous wheel set and drives the transition axle to rotate. Each group of transition belt pulleys on the wheel shaft is connected by a synchronous wheel group respectively and drives the other band saw machines to rotate and cut logs. 2. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, wherein the drive motor is a permanent magnet motor. 3. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, characterized in that: the numerical control band saw unit further comprises a plurality of sets of tensioning mechanisms with the same number as the number of the band saw machines, and each set of tensioning mechanisms is respectively set. The synchronous belts of each group of synchronous wheel groups are pressed against the synchronous belts of each group of synchronous wheel groups on the frame of the numerical control band saw unit. 4. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 3, wherein each group of the tensioning mechanisms comprises a tensioning pulley, a connecting rod, and a driving mechanism, and one end of the connecting rod is connected to the tensioning pulley. The other end of the connecting rod is hinged with the frame of the numerical control band saw unit, and the output end of the driving mechanism is hinged with the middle part of the connecting rod. 5. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, characterized in that: each numerical control band saw unit includes at least three band saw machines and the bottom of the band saw machine in the middle is provided with a middle band saw machine. A sliding mechanism that moves outward away from the machining station. 6. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, characterized in that: it further comprises a log detection mechanism and a log overturning conveying mechanism, the log detection mechanism is an infrared scanner, and the log detection mechanism is located in the log The outer diameter of the log is detected at the discharge end of the conveying mechanism, and the log detection data is transmitted to the PLC controller. The log overturning conveying mechanism is connected and controlled by the PLC controller. The feeding end of the log overturning conveying mechanism is connected to the log conveying mechanism. The discharge ends are connected, and the log overturning conveying mechanism includes a first frame, a conveying belt, a first driving unit and a turning mechanism, and the conveying belt is rotatably arranged in the middle of the first frame through the first driving unit and conveys The feed end of the belt is at the same height as the discharge end of the log conveying mechanism and receives the logs conveyed by the log conveying mechanism. The turning mechanism includes a first support frame, a second support frame, a second drive unit, a third drive unit, a support shaft and Pushing unit, the support shaft passes through the lower part of the first frame along the conveying direction of the conveyor belt, the first support frame and the second support frame are respectively fixed on both ends of the support shaft, the first support frame and the second support frame are respectively fixed on the two ends of the support shaft. The supporting frames are all V-shaped and the tops of both sides are provided with rotating gears driven by the second driving unit and the third driving unit, the pushing unit is arranged at the lower part of the first frame, and the output end of the pushing unit is in phase with the support shaft. Connect and push the support shaft to lift up and down at the lower part of the first frame, and then drive the first support frame and the second support frame to rise and turn the log or descend, and place the turned log on the conveyor belt and transport it to the feed end of the first pressing conveyor, so The first pressing and conveying frame presses the logs whose curved and straight surfaces are adjusted, and transports them to the double-cutting milling cutter to mill the two sides of the logs to be cut. 7. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 6, characterized in that: it further comprises a second pressing material conveying frame, and the second pressing material conveying frame is erected on the last CNC band saw machine of the log cutting assembly line and the Between the board and fang separators, the board skin and the square wood after being cut by each CNC band saw machine are transported to the board and fang separator for separation of the board skin and the square wood. 8. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 6, characterized in that: the upper surface of the conveyor belt of the log overturning and conveying mechanism is provided with a plurality of pinch plates with arc-shaped grooves on the upper surface at intervals, The arc-shaped grooves of each pinch plate are provided with upward serrated edges. 9. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, characterized in that: each group of numerical control band saw units further comprises a band saw base, and the upper and lower sides of the band saw base are provided with moving guide rails, and two numerical control The top and bottom of each band saw machine of the band saw unit are respectively slidably connected with the up and down moving guide rails of the band saw machine base. 10. The automatic energy-saving feeding and cutting woodworking sawing machine according to claim 1, characterized in that: each band saw machine of each numerical control band saw unit is located on the upper part of the fuselage and is provided with a photoelectric switch for detecting whether the band saw blade is disconnected, The photoelectric switch is connected with the input end of the PLC controller.

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