Veneer moisture content detection device, veneer classifying and stacking device and veneer production line

Abstract

The utility model provides a veneer moisture content detection device, a veneer classifying and stacking device and a veneer production line, and belongs to the technical field of wood veneer processing equipment. The veneer moisture content detection device comprises a driving motor, a detection conveyor belt mechanism, a pressing conveyor belt mechanism, a photoelectric sensor, a moisture content detector and a control device; the detection conveyor belt mechanism is provided with a first conveyor belt, the pressing conveyor belt mechanism comprises second conveyor belts parallelly arranged at the top of the first conveyor belt at intervals, and the moisture content detector is arranged towards gaps between the first conveyor belt and the second conveyor belts; the first conveying belt and the second conveying belt press and convey the veneers, the moisture content detector detects the moisture content of the pressed veneers in the length direction, and the accuracy degree is higher; a plurality of groups of material receiving devices arranged behind the veneer moisture content detection device are arranged in the veneer classifying and stacking device, and the veneers can be classified and stacked according to the moisture content; the veneer production line can achieve the whole process of log feeding, rotary cutting, moisture content detection and classified stacking.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wood veneer processing equipment, and more particularly to a veneer moisture content detection device, a veneer classification and stacking device, and a veneer production line. BACKGROUND

[0002] In order to save wood resources and improve the utilization rate of wood, people have invented glued laminated wood. In the production of veneer, the processing is carried out by rotary cutting. For example, the full-automatic intelligent feeding, centering, rotary cutting, and stacking veneer processing production line disclosed in the patent application CN11377175B, filed by the applicant, is used for producing veneer. In the scheme of the disclosed patent, since the moisture content of the annual rings of the log is different, the control device calculates the moisture content of the annual rings of the log according to the imaging program of the log, and automatically transports the qualified veneer with different moisture contents to the veneer automatic stacking device for stacking.

[0003] However, it is found in actual use that since the disclosed scheme calculates the moisture content through the imaging program of the log, the log has not been processed into veneer. Since there is a difference in the moisture content along the radial direction of the log, more than one veneer can be rotary cut from each log, and the moisture content along the length direction of each veneer also changes to some extent, so that the moisture content calculated by the above method cannot completely and accurately reflect the moisture content of the veneer. The consistency of the moisture content of each group of stacked veneer cannot be completely guaranteed. SUMMARY

[0004] The utility model provides a kind of veneer moisture content detection device, veneer classification and stacking device and veneer production line, solve the problem of low accuracy of veneer moisture content detection in prior art, the consistency of the moisture content of each group of veneer after production line stacking is low.

[0005] To achieve the above object, the technical scheme of the present application provides a veneer moisture content detection device, which comprises a mounting frame, a drive motor, a detection conveyor belt mechanism, a compression conveyor belt mechanism, a photoelectric sensor, a moisture content detector and a control device. The detection conveyor belt mechanism, the compression conveyor belt mechanism, the photoelectric sensor and the moisture content detector are all installed on the mounting frame.

[0006] The detection conveyor belt mechanism has a first conveyor belt, and the compression conveyor belt mechanism includes a second conveyor belt arranged in parallel and spaced apart on the top of the first conveyor belt. The detection conveyor belt mechanism and the compression conveyor belt mechanism are both driven by the drive motor. The photoelectric sensor is located at the feeding end of the detection conveyor belt mechanism and is arranged towards the first conveyor belt. The moisture content detector is arranged towards the gap between the first conveyor belt and the second conveyor belt. The drive motor, the photoelectric sensor and the moisture content detector are all controlled by the control device.

[0007] The control device can adopt a common PLC controller. The first conveying belt and the second conveying belt press and convey the single board, and the moisture content detector detects the moisture content of the pressed single board, thereby avoiding the deviation of the detection data caused by the fluctuation of the distance between the moisture content detector and the single board. Meanwhile, the moisture content detector can detect the moisture content of the single board in the length direction during the movement of the single board, rather than only monitoring one point, and the average moisture content of the whole single board can be calculated, which can more accurately reflect the moisture content of the single board and is more accurate than the detection of the moisture content of the log before processing the single board.

[0008] Optionally, the first conveying belt and the second conveying belt each have a plurality of strips, the plurality of first conveying belts are arranged in a spaced manner in a direction perpendicular to the conveying direction of the first conveying belts, and the plurality of second conveying belts are arranged one by one on the top of the plurality of first conveying belts; the moisture content detectors are arranged alternately with the first conveying belts in the arrangement direction of the first conveying belts. The moisture content detectors are arranged from the gap between the first conveying belts to the single board, so that the single board pressed by the first conveying belts and the second conveying belts can be directly detected, and the distance between the moisture content detectors and the single board is stable. The first conveying belts do not block the surface of the single board. The moisture content detectors are arranged in the width direction of the single board, and each of the moisture content detectors detects the moisture content of the single board in the length direction, so that the detection points of the moisture content detectors can cover the whole single board in a large area, and the detection accuracy is higher.

[0009] Optionally, the pressing conveying belt mechanism comprises a driving shaft, a first driving wheel, a first driven wheel and a second driven wheel; the driving shaft is rotatably arranged on the mounting frame, the driving shaft is in transmission connection with the driving motor, the first driving wheel is fixedly arranged outside the driving shaft, the first driven wheel and the second driven wheel are rotatably arranged on the mounting frame, the second conveying belt is arranged in a closed loop around the first driving wheel, the first driven wheel and the second driven wheel, and the part of the second conveying belt between the first driven wheel and the second driven wheel is arranged in parallel and spaced apart on the top of the corresponding first conveying belt. The driving motor drives the driving shaft and the first driving wheel to rotate, thereby realizing the movement of the second conveying belt. The surfaces of the second conveying belt and the first conveying belt opposite to each other can be arranged to move at the same speed in the same direction, so as to prevent the single board from sliding and rubbing with the first conveying belt and the second conveying belt, thereby avoiding the wear of the equipment and the single board.

[0010] Optionally, the pressing conveyor belt mechanism further comprises a movable frame, the driving shaft is rotatably arranged on the movable frame, and the first driven wheel and the second driven wheel are both rotatably arranged on the movable frame; the mounting frame has a connecting beam arranged on the top of the movable frame, a spring is vertically connected between the connecting beam and the movable frame, and a threaded rod is vertically arranged on the connecting beam, the bottom end of the threaded rod is arranged through the movable frame, the movable frame is vertically slidable along the threaded rod, a limiting nut is screwed on the threaded rod and arranged on the top of the movable frame, and the driving motor is connected with the driving shaft through belt transmission. The movable frame can be vertically moved to a certain extent through the spring, so that the distance between the first conveyor belt and the second conveyor belt can be changed. Through the above arrangement, the single board of different thicknesses can be adapted, and when the single board has undulations or foreign matters, the floating of the movable frame can ensure the smooth passing of the single board and prevent the single board from being stuck. The driving motor is connected with the driving shaft through belt transmission, the conveyor belt can compensate the vertical movement of the movable frame through the elasticity of the conveyor belt, and the stability of transmission is ensured.

[0011] Optionally, the pressing conveyor belt mechanism further comprises an adjusting frame, an adjusting shaft and an adjusting bolt, the first driven wheel is rotatably arranged on the adjusting frame, the adjusting frame is rotatably connected with the mounting frame through the adjusting shaft, the adjusting frame is provided with an arc-shaped adjusting hole with the adjusting shaft as the center, and the adjusting frame is connected with the mounting frame through the adjusting bolt arranged through the arc-shaped adjusting hole. The adjusting frame can rotate with the mounting frame, the relative positions between the first driven wheel and the second driven wheel can be adjusted by adjusting the angle between the adjusting frame and the mounting frame, so that the angle between the second conveyor belt and the first conveyor belt can be adjusted, and the accuracy of alignment between the first conveyor belt and the second conveyor belt is ensured. After the alignment is completed, the position of the adjusting frame can be fixed by tightening the adjusting bolt.

[0012] Optionally, the mounting frame comprises a fixed frame, a rotating frame and a connecting bolt, the driving motor, the detection conveyor belt mechanism, the pressing conveyor belt mechanism and the moisture content detector are all arranged on the rotating frame, arc-shaped connecting holes are arranged on both sides of the rotating frame in the width direction, and the rotating frame is connected with the fixed frame through the connecting bolt arranged through the arc-shaped connecting holes. Through the above arrangement, the driving motor, the detection conveyor belt mechanism, the pressing conveyor belt mechanism and the moisture content detector can rotate along the mounting frame, the height of the feeding end and the discharging end of the detection conveyor belt mechanism can be adjusted, and the whole single board moisture content detection device can be conveniently aligned with other devices in front and back, and conveniently integrated into a single board production line.

[0013] The technical scheme of the present application provides a single board classification stacking device, which comprises a single board automatic stacking device, a first belt conveyor and a single board moisture content detection device shown in any of the above; the discharge end of the detection conveying belt mechanism is connected with the feeding end of the first belt conveyor, the discharge end of the first belt conveyor is connected with the feeding end of the single board automatic stacking device, and the single board automatic stacking device and the first belt conveyor are both controlled by a control device. When the single board moisture content detection device completes the detection of the moisture content of the single board, the control device transports the single board to the corresponding stacking position of the single board automatic stacking device according to the detection data, so that the single board can be classified and stacked according to the moisture content, and full-automatic classification and stacking of the single board according to the moisture content are realized.

[0014] Optionally, the single board automatic stacking device has a frame, an adsorption conveying device, a board unloading device and a material receiving device, the adsorption conveying device has a conveying belt, the discharge end of the first belt conveyor is connected with the feeding end of the conveying belt; the board unloading device and the material receiving device are both provided with a plurality of groups along the conveying direction of the adsorption conveying device, and the adsorption conveying device, the board unloading device and the material receiving device are all controlled by the control device. After the single board is detected by the single board moisture content detection device, the single board is transported to the adsorption conveying device by the first belt conveyor, and then transported to the top of the material receiving device corresponding to the moisture content, and then unloaded by the board unloading device, and placed on the material receiving device. The single boards with different moisture contents are stacked on different material receiving devices, so that the single boards can be classified and stacked according to the moisture content.

[0015] Optionally, it further comprises a swing classification mechanism, a guide plate and a second belt conveyor; the second belt conveyor is located at the bottom side of the first belt conveyor, the guide plate is installed on the frame, the guide plate is located at the bottom side of the adsorption conveying device, and the bottom side of the guide plate is oppositely arranged with the second belt conveyor; the discharge end of the first belt conveyor has an axle, the swing classification mechanism comprises a swing frame, a swing cylinder, a second driving wheel, a third conveying belt and a third driven wheel; the end of the swing frame is rotatably sleeved on the outside of the axle, the third driven wheel is rotatably installed on the end of the swing frame away from the axle, the second driving wheel is fixedly sleeved on the outside of the axle, the third conveying belt is closed loop arranged on the outside of the second driving wheel and the third driven wheel, the swing cylinder is hingedly connected with the frame, and the output end of the swing cylinder is hingedly connected with the swing frame; the swing frame can be aligned to the conveying belt or the guide plate, and the swing cylinder is controlled by the control device.

[0016] The first belt conveyor transports the single board to the swing classification mechanism, and the control device controls the swing classification mechanism to move according to the detection result of the moisture content detector. If the moisture content of the single board meets the stacking standard, the swing classification mechanism is aligned to the adsorption conveying device to stack the single board. If the moisture content of the single board does not meet the stacking standard, the swing classification mechanism is aligned to the guide plate, and the unqualified product is guided into the second belt conveyor through the guide plate for recycling.

[0017] The technical scheme of the present application provides a single board production line, which comprises a support frame, a log horizontal conveying device, a stepped stepping log loading device, a log automatic centering device, a log automatic transfer device, a log automatic rotary cutting device, a single board conveying device, and a single board classification stacking device shown in any of the above. The discharge end of the single board conveying device is aligned with the feeding end of the detection conveying belt mechanism. The log horizontal conveying device, the stepped stepping log loading device, the log automatic centering device, the log automatic rotary cutting device, and the single board conveying device are all installed on the support frame and controlled by a control device. The entire single board production line can realize the whole process of log loading, rotary cutting, moisture content detection, and stacking. Due to the addition of the single board moisture content detection device, the moisture content of each single board can be accurately detected, and the accuracy of the detection is improved. Moreover, the single boards can be classified and stacked according to the moisture content to meet different needs.

[0018] The beneficial effects of the technical scheme of the present application relative to the prior art are that:

[0019] The single board moisture content detection device of the present application is used to detect the moisture content of the rotary cut single board, rather than directly detecting the moisture content of the log, which can more accurately reflect the moisture content of the single board product. At the same time, the first conveying belt and the second conveying belt of the technical scheme of the present application can press the single board, which can avoid the deviation of the detection data caused by the fluctuation of the distance between the moisture content detector and the single board. At the same time, during the movement of the single board, the moisture content detector can monitor the moisture content of the single board in the length direction, rather than only monitoring one point, and the average moisture content of the entire single board can be calculated, which is more accurate. The single board classification stacking device can classify the detected single boards according to the moisture content to meet different needs. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a single board moisture content detection device structure front view;

[0022] Figure 2 It is a single board moisture content detection device structure side view;

[0023] Figure 3 It is a single board moisture content detection device structure top view;

[0024] Figure 4 It is a single board moisture content detection device angle adjustment state diagram;

[0025] Figure 5 Structure of the single board classification and stacking device from the front view;

[0026] Figure 6 Structure of the single board classification and stacking device from the top view;

[0027] Figure 7 Structure of the single board classification and stacking device from the top view; Figure 5 Enlarged view of part A;

[0028] Figure 8 Connection structure of the first belt conveyor and the swing classification mechanism from the top view;

[0029] Figure 9 Structure of the single board production line from the front view;

[0030] Figure 10 Structure of the single board production line from the top view.

[0031] Figure legend: 100, detection part; 1, mounting frame; 101, connecting beam; 102, spring; 103, screw rod; 104, limiting nut; 105, fixed frame; 106, rotating frame; 107, connecting bolt; 108, circular arc connecting hole; 2, driving motor; 3, detection conveying belt mechanism; 301, first conveying belt; 302, tensioning wheel; 4, compression conveying belt mechanism; 401, second conveying belt; 402, driving shaft; 403, first driving wheel; 404, first driven wheel; 405, second driven wheel; 406, movable frame; 407, adjusting frame; 408, adjusting shaft; 409, adjusting bolt; 410, circular arc adjusting hole; 5, photoelectric sensor; 6, moisture content detector; 7, single board automatic stacking device; 701, frame; 702, adsorption conveying device; 703, board unloading device; 704, material receiving device; 705, conveying belt; 8, first belt conveyor; 801, wheel shaft; 901, swing frame; 902, swing cylinder; 903, second driving wheel; 904, third conveying belt; 905, third driven wheel; 10, guide plate; 11, second belt conveyor; 12, support frame; 13, log transverse conveying device; 14, stepped stepping log device; 15, log automatic centering device; 16, log automatic transfer device; 17, log automatic rotary cutting device; 18, single board conveying device; 19, material hitting cylinder; 20, connecting shaft; 21, material hitting plate. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the following will further describe the present application in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0033] Example 1:

[0034] The embodiment provides a single board moisture content detection device based on Figures 1 to 3 As shown in the figure, the device comprises a mounting frame 1, a driving motor 2, a detection conveying belt mechanism 3, a pressing conveying belt mechanism 4, a photoelectric sensor 5, a moisture content detector 6 and a control device. The detection conveying belt mechanism 3, the pressing conveying belt mechanism 4, the photoelectric sensor 5 and the moisture content detector 6 are all mounted on the mounting frame 1. The moisture content detector 6 can adopt an existing instrument for detecting the moisture content of wood, preferably an inductive moisture content detector 6, and does not need to be in direct contact with the single board in motion. The detection conveying belt mechanism 3 adopts a common belt conveyor, and the detection conveying belt mechanism 3 has a first conveying belt 301 on which the single board is placed for transportation. In order to ensure the stability of transportation, a tensioning wheel 302 can be arranged to tension the first conveying belt 301. The pressing conveying belt mechanism 4 comprises a second conveying belt 401 arranged in parallel and at intervals on the top of the first conveying belt 301. The detection conveying belt mechanism 3 and the pressing conveying belt mechanism 4 are both driven by the driving motor 2, and specifically, the two can each independently adopt different driving motors 2, or can be driven by the same driving motor 2 for synchronous start and stop. The driving motor 2 and the detection conveying belt mechanism 3 and the pressing conveying belt mechanism 4 can adopt conventional transmission modes such as belt transmission or gear transmission, and details are not described herein. The photoelectric sensor 5 is located at the feeding end of the detection conveying belt mechanism 3 and is arranged towards the first conveying belt 301, and the photoelectric sensor 5 detects whether the single board is transported to the detection conveying belt mechanism 3. The moisture content detector 6 is arranged towards the gap between the first conveying belt 301 and the second conveying belt 401. The driving motor 2, the photoelectric sensor 5 and the moisture content detector 6 are all controlled by the control device. The control device can adopt a common PLC controller. The first conveying belt 301 and the second conveying belt 401 press and transport the single board, and the moisture content detector 6 detects the moisture content of the single board after being pressed, thereby avoiding the deviation of the detection data caused by the fluctuation of the distance between the moisture content detector 6 and the single board. At the same time, the moisture content detector 6 can detect the moisture content of the single board along the length direction during the movement of the single board, rather than only monitoring one point, and the average moisture content of the single board along the length direction is calculated by calculation. Compared with detecting the moisture content of the single board after processing the single board from the log, the technical scheme of the present application can more accurately reflect the moisture content of the single board, and is more accurate.

[0035] Preferably, based on Figures 1 to 3 As shown in the figure, the first conveying belt 301 and the second conveying belt 401 both have a plurality of strips, for example, four or five strips, etc. The plurality of first conveying belts 301 are arranged in intervals along the direction perpendicular to the conveying direction of the first conveying belts 301, and the plurality of second conveying belts 401 are arranged one by one on the top of the plurality of first conveying belts 301. The moisture content detector 6 and the first conveying belt 301 are arranged alternately along the arrangement direction of the first conveying belt 301. In the embodiment, based on Figure 2 and Figure 3As shown, the first conveying belt 301 and the second conveying belt 401 each have four, and the moisture content detector 6 has five groups, and the five groups of moisture content detectors 6 are arranged alternately with the four first conveying belts 301. When the single board is transported to between the first conveying belt 301 and the second conveying belt 401 and is pressed, the surface of the single board between adjacent first conveying belts 301 is not blocked, and the detection end of the moisture content detector 6 can be directly arranged towards the bottom surface of the single board, directly detecting the single board pressed by the first conveying belt 301 and the second conveying belt 401, ensuring the stability of the distance between the moisture content detector and the single board, and ensuring the accuracy of the measurement result of each point. At the same time, the moisture content detector 6 is arranged along the width direction of the single board, and cooperates with the above-mentioned each moisture content detector 6 to detect the moisture content of the single board along the length direction, so that the detection points of the moisture content detector 6 can cover the entire single board in a large area, rather than only single point or on a certain line, and the detection result can more accurately reflect the moisture content of the single board.

[0036] Further, based on Figure 1 As shown, the pressing conveying belt mechanism 4 includes a driving shaft 402, a first driving wheel 403, a first driven wheel 404 and a second driven wheel 405. The driving shaft 402 is rotatably arranged on the mounting frame 1, the driving shaft 402 is in transmission connection with the driving motor 2, the first driving wheel 403 is fixedly sleeved outside the driving shaft 402, the first driven wheel 404 and the second driven wheel 405 are each rotatably arranged on the mounting frame 1, and the second conveying belt 401 is closed-loop wound on the first driving wheel 403, the first driven wheel 404 and the second driven wheel 405. The part of the second conveying belt 401 between the first driven wheel 404 and the second driven wheel 405 is arranged in parallel and spaced apart on the top of the corresponding first conveying belt 301. For the case of having multiple groups of pressing conveying belt mechanisms 4 in the embodiment, all the pressing conveying belts share one driving shaft 402 and are driven by the driving motor 2, so as to ensure that all the second conveying belts 401 can move synchronously and at the same speed. The driving motor 2 drives the driving shaft 402 and the first driving wheel 403 to rotate, thereby realizing the movement of the second conveying belt 401. The surfaces of the second conveying belt 401 and the first conveying belt 301 opposite to each other can be arranged to move at the same speed in the same direction, so as to ensure that the single board does not produce sliding friction with the first conveying belt 301 and the second conveying belt 401, thereby avoiding the wear of the equipment and the single board.

[0037] Further, based on Figure 1As shown, the pressing conveyor belt mechanism 4 further comprises a movable frame 406, the driving shaft 402 is rotatably arranged on the movable frame 406, and the first driven wheel 404 and the second driven wheel 405 are both rotatably arranged on the movable frame 406. The mounting frame 1 is provided with a connecting beam 101 located at the top of the movable frame 406, a spring 102 is vertically connected between the connecting beam 101 and the movable frame 406, and the connecting beam 101 is further vertically provided with a screw rod 103, the bottom end of the screw rod 103 is arranged through the movable frame 406, the movable frame 406 can vertically slide along the screw rod 103, a limiting nut 104 is screwed on the screw rod 103 and located at the top of the movable frame 406, and the driving motor 2 is connected with the driving shaft 402 through belt transmission. The movable frame 406 can realize a certain vertical movement through the spring 102, so that the distance between the first conveyor belt 301 and the second conveyor belt 401 can be changed. Through the above arrangement, single boards of different thicknesses can be adapted, and when encountering single boards with undulations or foreign matters, the floating of the movable frame 406 can ensure the smooth passing of the single boards and prevent them from being stuck. The driving motor 2 is connected with the driving shaft 402 through belt transmission, and the conveyor belt can compensate for the vertical movement of the movable frame 406 through its own elasticity, thereby ensuring the stability of transmission. Since the thickness range of single boards is small, the undulating distance of the movable frame 406 is small, and the conveyor belt can fully meet the compensation for the distance.

[0038] Further, based on Figure 1 As shown, the pressing conveyor belt mechanism 4 further comprises an adjusting frame 407, an adjusting shaft 408 and an adjusting bolt 409, and the first driven wheel 404 is rotatably arranged on the adjusting frame 407. The adjusting frame 407 is rotatably connected with the mounting frame 1 through the adjusting shaft 408, the adjusting frame 407 is provided with a circular arc adjusting hole 410 with the adjusting shaft 408 as the center, and the adjusting frame 407 is connected with the mounting frame 1 through the adjusting bolt 409 passing through the circular arc adjusting hole 410. The adjusting frame 407 can rotate with the mounting frame 1, and the relative position between the first driven wheel 404 and the second driven wheel 405 can be adjusted by adjusting the angle between the adjusting frame 407 and the mounting frame 1, so as to realize the fine adjustment of the angle between the second conveyor belt 401 and the first conveyor belt 301, and ensure the accuracy of the alignment between the first conveyor belt 301 and the second conveyor belt 401. After the alignment is completed, the position of the adjusting frame 407 can be fixed by tightening the adjusting screw.

[0039] Further, based on Figures 1 to 4As shown, the mounting rack 1 includes a fixed frame 105, a rotating frame 106 and a connecting bolt 107, the driving motor 2, the detection conveying belt mechanism 3, the pressing conveying belt mechanism 4 and the moisture content detector 6 are all installed on the rotating frame 106. The rotating frame 106 is provided with a circular arc connecting hole 108 on both sides in the width direction, and the rotating frame 106 is connected with the fixed frame 105 through the connecting bolt 107 penetrating through the circular arc connecting hole 108. This arrangement enables the driving motor 2, the detection conveying belt mechanism 3, the pressing conveying belt mechanism 4 and the moisture content detector 6 to rotate along the mounting rack 1, so as to adjust the height positions of the feeding end and the discharging end of the detection conveying belt mechanism 3. In actual use, the single board moisture content detection device in the embodiment is often integrated into a single board production line, and the feeding end and the discharging end of the detection conveying belt mechanism 3 are both connected to external equipment. By adjusting the height positions of the feeding end and the discharging end of the detection conveying belt mechanism 3, the two ends of the detection conveying belt mechanism 3 can be aligned to the external equipment, which is convenient for integration into the single board production line.

[0040] The use method of the single board moisture content detection device provided by the embodiment is as follows:

[0041] The driving motor 2 drives the detection conveying belt mechanism 3 and the pressing conveying belt mechanism 4 to operate synchronously, and the single board enters the first conveying belt 301 and the second conveying belt 401 for transportation from the feeding end of the detection conveying belt mechanism 3. After the photoelectric sensor 5 detects that the single board enters, the moisture content detector 6 detects the moisture content of the single board through the control device. The detected single board moves out from the discharging end of the detection conveying belt mechanism 3. The moisture content detector 6 is distributed in several groups along the width direction of the single board, and each group of the moisture content detector 6 detects the single board linearly along the transportation direction of the single board, so that the detection points of the moisture content detector 6 can cover the entire single board in a large area, rather than only one point or on a line, and the detection result can more accurately reflect the moisture content of the single board.

[0042] Embodiment 2:

[0043] The technical scheme of the present application provides a single board classification and stacking device, which is based on Figure 8 As shown, it includes a single board automatic stacking device 7, a first belt conveyor 8 and the single board moisture content detection device shown in embodiment 1. The discharging end of the detection conveying belt mechanism 3 is connected to the feeding end of the first belt conveyor 8, the discharging end of the first belt conveyor 8 is connected to the feeding end of the single board automatic stacking device 7, and the single board automatic stacking device 7 and the first belt conveyor 8 are both controlled by the control device. The single board moisture content detection device serves as a detection part 100 in the single board classification and stacking device. After the single board is detected for moisture content in the detection part 100, the single board is conveyed to the single board automatic stacking device 7 for classification and stacking through the first belt conveyor 8.

[0044] In this embodiment, the single board automatic stacking device 7 comprises the single board automatic stacking device and the heterogeneous single board automatic stacking device in the full-automatic intelligent feeding centering rotary cutting stacking single board processing production line disclosed in the patent application CN113771175B filed by the applicant, and the specific structure has been disclosed and will not be repeated.

[0045] When the single board moisture content detection device completes the detection of the moisture content of the single board, the control device transports the single board to the corresponding stacking position of the single board automatic stacking device 7 according to the detected data, realizing the full-automatic classification and stacking of the single board according to the moisture content.

[0046] Embodiment 3:

[0047] The technical scheme of the present application provides a single board classification and stacking device, which comprises a single board automatic stacking device 7, a first belt conveyor 8, and a single board moisture content detection device as shown in embodiment 1. The discharge end of the detection conveying belt mechanism 3 is connected to the feeding end of the first belt conveyor 8, and the discharge end of the first belt conveyor 8 is connected to the feeding end of the single board automatic stacking device 7. Both the single board automatic stacking device 7 and the first belt conveyor 8 are controlled by a control device. The single board moisture content detection device serves as a detection part 100 in the single board classification and stacking device. After the single board is detected for moisture content in the detection part 100, the single board is transported to the single board automatic stacking device 7 for classification and stacking by the first belt conveyor 8.

[0048] In this embodiment, based on Figure 5 and Figure 6 As shown, the single board automatic stacking device 7 has a frame 701, an adsorption conveying device 702, a board unloading device 703, and a material receiving device 704. The adsorption conveying device 702 has a conveying belt 705, and the discharge end of the first belt conveyor 8 is connected to the feeding end of the conveying belt 705. Among them, the frame 701, the adsorption conveying device 702, the board unloading device 703, the material receiving device 704, and the conveying belt 705 all adopt the same-named components or devices in the full-automatic single board stacking machine disclosed in the patent application CN102992041A filed by the applicant, and the connection modes are the same, and will not be repeated. The single board automatic stacking device 7 in this embodiment is improved on the basis of the full-automatic single board stacking machine in the above-mentioned disclosed patent, and specifically, the board unloading device 703 and the material receiving device 704 are each provided with a plurality of groups along the conveying direction of the adsorption conveying device 702, for example, five groups as shown in Figure 5 The board unloading device 703 and the material receiving device 704 are correspondingly arranged. The five groups of board unloading devices 703 and material receiving devices 704 are respectively used for stacking single boards with five different moisture contents. Of course, according to the actual classification situation, the board unloading device 703 and the material receiving device 704 can also be arranged in three groups or four groups, etc. The adsorption conveying device 702, the board unloading device 703, and the material receiving device 704 are all controlled by a control device.

[0049] The single board is transported to the adsorption conveying device 702 by the first belt conveyor 8 after being detected by the single board moisture content detection device, and is placed on the corresponding receiving device 704 after being transported to the top of the corresponding receiving device 704. The corresponding unloading device 703 unloads the single board, and the single boards of different moisture contents are stacked on different receiving devices 704, realizing the classification and stacking of single boards according to the moisture content.

[0050] Further, based on Figure 7 and Figure 8 as shown, further comprising a swing classification mechanism, a guide plate 10 and a second belt conveyor 11. The second belt conveyor 11 is located at the bottom side of the first belt conveyor 8, the guide plate 10 is installed on the frame 701, the guide plate 10 is located at the bottom side of the adsorption conveying device 702, and the bottom side of the guide plate 10 is arranged opposite to the second belt conveyor 11. The discharge end of the first belt conveyor 8 has an axle 801, which is an axle commonly used for installing pulleys and conveyor belts on a belt conveyor. The swing classification mechanism comprises a swing frame 901, a swing cylinder 902, a second driving pulley 903, a third conveyor belt 904 and a third driven pulley 905. The end of the swing frame 901 is rotatably sleeved on the outside of the axle 801, the third driven pulley 905 is rotatably installed on the end of the swing frame 901 away from the axle 801, the second driving pulley 903 is fixedly sleeved on the outside of the axle 801, the third conveyor belt 904 is closed loop wound on the outside of the second driving pulley 903 and the third driven pulley 905, the swing cylinder 902 is hingedly connected with the frame 701, the output end of the swing cylinder 902 is hingedly connected with the swing frame 901, and the swing frame 901 can be aligned to the conveying belt 705 or the guide plate 10, and the swing cylinder 902 is controlled by a control device.

[0051] The first belt conveyor 8 conveys the single board to the swing classification mechanism, and the control device controls the swing classification mechanism to move according to the detection result of the moisture content detector 6. In specific use, the control device can control the swing classification mechanism to be aligned to the guide plate 10 and the conveying belt 705 respectively by controlling the extension and retraction of the swing cylinder 902. When the detection part 100 detects that the moisture content of the single board is qualified, the control device drives the swing classification mechanism to rotate upward and align to the conveying belt 705 of the adsorption conveying device 702 through the swing cylinder 902. When the detection part 100 detects that the moisture content of the single board is unqualified, the control device drives the swing classification mechanism to rotate downward and align to the guide plate 10 through the swing cylinder 902, and the single board falls on the second belt conveyor 11 from the guide plate 10 for recycling.

[0052] In this embodiment, based on Figure 8As shown, considering the first belt conveyor 8 is connected with other conveying mechanisms in front, considering the connection with the swing sorting mechanism, and adapting to the single board with wider width, the conveying belts on the first belt conveyor 8 and the third conveying belt 904 are all provided with multiple groups and arranged alternately with each other. The single board is more smoothly conveyed from the first belt conveyor 8 to the third conveying belt 904.

[0053] Further, based on Figure 7 As shown, the single board automatic stacking device 7 is further provided with a material knocking device. The material knocking device includes a material knocking cylinder 19, a connecting shaft 20, and a material knocking plate 21. The connecting shaft 20 is rotatably arranged on the frame 701, the material knocking plate 21 is fixedly installed on the connecting shaft 20, one end of the material knocking cylinder 19 is hinged to the frame 701, and the other end of the material knocking cylinder 19 is hinged to the material knocking plate 21. The material knocking plate 21 can be rotatably received on the top of the conveying belt 705 or rotatably extended between the swing sorting mechanism and the guide plate 10, and the material knocking cylinder 19 is controlled by the control device. During the process that the unqualified product is transported to the guide plate 10 by the swing sorting mechanism, the material knocking cylinder 19 drives the material knocking plate 21 to move, and the unqualified product is knocked off or is bent to be guided to the guide plate 10 in the same direction as the guide plate 10. The setting of the material knocking device can avoid the situation that the unqualified product is stuck between the swing sorting mechanism and the guide plate 10 due to the length of the unqualified product being too long, and the end of the unqualified product abutting against the guide plate 10.

[0054] Embodiment 4:

[0055] The technical scheme of the present application provides a single board production line, based on Figure 9 and Figure 10 As shown, including a support frame 12, a log transverse conveying device 13, a stepped stepping log loading device 14, a log automatic centering device 15, a log automatic transfer device 16, a log automatic rotary cutting device 17, a single board conveying device 18, and the single board sorting and stacking device shown in Embodiment 2 or 3.

[0056] Among them, the log transverse conveying device 13, the stepped stepping log loading device 14, the log automatic centering device 15, the log automatic transfer device 16, the log automatic rotary cutting device 17 and the single board conveying device 18 all adopt the same-named devices in the full-automatic intelligent loading and centering rotary cutting and stacking single board processing production line disclosed in the patent application CN113771175B, and the support frame 12 corresponds to the rack in the patent. The arrangement mode of the support frame 12, the log transverse conveying device 13, the stepped stepping log loading device 14, the log automatic centering device 15, the log automatic transfer device 16, the log automatic rotary cutting device 17 and the single board conveying device 18 is the same as the arrangement mode of the corresponding devices in the patent, and will not be repeated here. The scheme of the present embodiment is to integrate the single board sorting and stacking device in the single board production line.

[0057] The discharge end of the veneer conveying device 18 is aligned to the feeding end of the detection conveying belt mechanism 3, the log transverse conveying device 13, the stepped stepping log device 14, the log automatic centering device 15, the log automatic rotary cutting device 17 and the veneer conveying device 18 are all installed on the support frame 12 and controlled by the control device. The whole veneer production line can realize the whole process of log feeding, rotary cutting, moisture content detection and classified stacking. Due to the addition of the veneer moisture content detection device, the moisture content of each veneer can be accurately detected, and the detection accuracy is improved. And the veneers can be classified and stacked according to the moisture content to meet different needs.

[0058] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A single board moisture content detection device characterized by: The device comprises a mounting frame, a driving motor, a detection conveying belt mechanism, a pressing conveying belt mechanism, a photoelectric sensor, a water content detector and a control device; the detection conveying belt mechanism, the pressing conveying belt mechanism, the photoelectric sensor and the water content detector are all mounted on the mounting frame; The detection conveying belt mechanism has a first conveying belt, the pressing conveying belt mechanism comprises a second conveying belt which is arranged in parallel and at intervals on the top of the first conveying belt, and the detection conveying belt mechanism and the pressing conveying belt mechanism are both driven by the driving motor; the photoelectric sensor is arranged at the feeding end of the detection conveying belt mechanism and faces the first conveying belt, and the water content detector is arranged towards the gap between the first conveying belt and the second conveying belt; the driving motor, the photoelectric sensor and the water content detector are all controlled by the control device.

2. The single board moisture detection apparatus of claim 1, wherein: The first conveying belt and the second conveying belt both have a plurality of strips, the plurality of first conveying belts are arranged in parallel and at intervals in the direction perpendicular to the conveying direction of the first conveying belts, and the plurality of second conveying belts are arranged one by one on the top of the plurality of first conveying belts; the water content detector and the first conveying belt are arranged alternately in the arrangement direction of the first conveying belt.

3. The single board moisture detection apparatus of claim 1, wherein: The pressing conveying belt mechanism further comprises a driving shaft, a first driving wheel, a first driven wheel and a second driven wheel; The driving shaft is rotatably arranged on the mounting frame, the driving shaft is in transmission connection with the driving motor, the first driving wheel is fixedly arranged outside the driving shaft, the first driven wheel and the second driven wheel are both rotatably arranged on the mounting frame, the second conveying belt is closed-loop arranged around the first driving wheel, the first driven wheel and the second driven wheel, and the part of the second conveying belt between the first driven wheel and the second driven wheel is arranged in parallel and at intervals on the top of the corresponding first conveying belt.

4. The single board moisture detection apparatus of claim 3, wherein: The pressing conveying belt mechanism further comprises a movable frame, the driving shaft is rotatably arranged on the movable frame, and the first driven wheel and the second driven wheel are both rotatably arranged on the movable frame; The mounting frame has a connecting beam arranged on the top of the movable frame, springs are vertically connected between the connecting beam and the movable frame, a screw rod is vertically arranged on the connecting beam, the bottom end of the screw rod penetrates the movable frame, the movable frame can vertically slide along the screw rod, a limiting nut is screwed on the screw rod and arranged on the top of the movable frame, and the driving motor and the driving shaft are connected through a belt transmission.

5. The single board moisture detection apparatus of claim 3, wherein: The pressing conveying belt mechanism further comprises an adjusting frame, an adjusting shaft and an adjusting bolt, and the first driven wheel is rotatably arranged on the adjusting frame; the adjusting frame is rotatably connected with the mounting frame through the adjusting shaft, the adjusting frame is provided with a circular arc adjusting hole with the adjusting shaft as the center, and the adjusting frame is connected with the mounting frame through the adjusting bolt penetrating the circular arc adjusting hole.

6. The single board moisture detection apparatus of any one of claims 1-5, wherein: The mounting frame comprises a fixed frame, a rotating frame and a connecting bolt, and the driving motor, the detection conveying belt mechanism, the pressing conveying belt mechanism and the water content detector are all arranged on the rotating frame. The rotating frame is provided with arc-shaped connecting holes on both sides in the width direction, and the rotating frame is connected with the fixed frame through the connecting bolts penetrating through the arc-shaped connecting holes.

7. A single board sorting stacker apparatus characterized by: The single board automatic stacking device, the first belt conveyor and the single board moisture content detection device as claimed in any one of claims 1-6 are included; the discharge end of the detection conveying belt mechanism is connected with the feeding end of the first belt conveyor, the discharge end of the first belt conveyor is connected with the feeding end of the single board automatic stacking device, and the single board automatic stacking device and the first belt conveyor are controlled by the control device.

8. The single board sorting stacker apparatus of claim 7, wherein: The single board automatic stacking device has a frame, an adsorbing conveying device, a board unloading device and a receiving device, the adsorbing conveying device has a conveying belt, and the discharge end of the first belt conveyor is connected with the feeding end of the conveying belt. The board unloading device and the receiving device are provided with a plurality of groups along the conveying direction of the adsorbing conveying device, and the adsorbing conveying device, the board unloading device and the receiving device are controlled by the control device.

9. The single board sorting stacker apparatus of claim 8 wherein: The swing classification mechanism, a guide plate and a second belt conveyor are further included; the second belt conveyor is located at the bottom side of the first belt conveyor, the guide plate is installed on the frame, the guide plate is located at the bottom side of the adsorbing conveying device, and the bottom side of the guide plate is arranged opposite to the second belt conveyor; The discharge end of the first belt conveyor has an axle, the swing classification mechanism includes a swing frame, a swing cylinder, a second driving wheel, a third conveying belt and a third driven wheel; the end of the swing frame is rotatably sleeved on the outside of the axle, the third driven wheel is rotatably installed on the end of the swing frame away from the axle, the second driving wheel is fixedly sleeved on the outside of the axle, the third conveying belt is looped around the outside of the second driving wheel and the third driven wheel, the swing cylinder is hingedly connected with the frame, the output end of the swing cylinder is hingedly connected with the swing frame, the swing frame can be swingingly aligned to the conveying belt or the guide plate, and the swing cylinder is controlled by the control device.

10. A veneer production line, characterized by: The single board classification and stacking device as claimed in claim 7 or 8 or 9, a support frame, a log transverse conveying device, a stepped log stepping-up device, a log automatic centering device, a log automatic transfer device, a log automatic rotary cutting device and a single board conveying device are included, the discharge end of the single board conveying device is aligned to the feeding end of the detection conveying belt mechanism, and the log transverse conveying device, the stepped log stepping-up device, the log automatic centering device, the log automatic rotary cutting device and the single board conveying device are installed on the support frame and controlled by the control device.

Images