Suspension type veneer drying equipment

Abstract

The invention discloses suspension type veneer drying equipment, which belongs to the field of plywood processing equipment, and comprises a drying room body, a drying single line I and a drying single line II, the drying single wire I and the drying single wire II are the same in structure and are oppositely arranged; wherein the drying single line I comprises a plate feeding station I, a feeding and carrying station I, a rotary circulating station I and a discharging station I, the feeding and carrying station I is vertically arranged on one side of the plate feeding station I, the rotary circulating station I is located between the plate feeding station I and the feeding and carrying station I, and the discharging station I is arranged at the outlet end of the feeding and carrying station I; the limitation that manual outdoor airing and collecting are needed in traditional plywood veneer raw material production is broken through, moisture of raw material veneers is dried in a short time through a limited space, the problem of board explosion caused by excessive moisture of the raw material veneers in the plywood pressing process is solved, and the production efficiency is improved. The moisture of the raw material veneer is quantitatively and regularly dried and supplied to a plywood production line.

Description

Technical Field

[0001] The invention relates to a hanging type veneer drying device, in particular to a drying device used in an actual production line, belonging to the field of plywood processing equipment. Background Art

[0002] In plywood production, the moisture content of the raw veneer is a crucial factor affecting the quality of the finished product. The plywood industrial park is perpetually filled with the damp aroma of eucalyptus. As China's largest eucalyptus veneer production base (accounting for 35% of the country's annual output), Guangxi Chongzuo's plywood industry faces three structural contradictions: First, land resources and policy restrictions: Traditional drying requires more than 50m 2 The drying yards are open-air, while Guangxi's average annual rainfall reaches 1,500 mm, and the mildew rate exceeds 20% during the rainy season. Long-term waterlogging in the drying yards causes the veneers to come into direct contact with the wet ground, exacerbating the risk of mildew. National farmland protection policies strictly restrict the expansion of industrial land, making it impossible for companies to alleviate production capacity pressures by expanding their drying yards. Second, a vicious cycle of labor costs: manual handling costs account for as much as 42% of total drying costs, and despite a monthly salary of 7,500 yuan (25% higher than in Yunnan), there is still a labor shortage. Manually loading a single veneer onto a shelf takes 10 seconds (versus just 3 seconds with equipment), creating an efficiency bottleneck that restricts production capacity. Manual handling results in a 3% veneer bending and breakage rate, further increasing raw material losses. Third, technical alternatives have shortcomings: tunnel drying room energy consumption reaches 120kWh / m 3 , and the stacking and drying causes the moisture content difference between the inner and outer layers to be greater than 5%; the moisture content fluctuation (±4%) far exceeds the 8±1% required by export markets such as Thailand. In 2023, 67% of the returned containers at Qinzhou Port were due to bursting problems; the hot pressing process caused the bursting rate to exceed 8% due to uneven moisture content, and quality claims occurred frequently.

[0003] Under the multiple pressures of tightening land policies, soaring labor costs, and rising export quality thresholds, traditional natural air drying and inefficient mechanical drying can no longer support the sustainable development of Guangxi's plywood industry with an annual output value of 35 billion yuan. There is an urgent need to develop a new drying system with small footprint, high degree of automation, and precise moisture content control. 2 ), to circumvent the land restrictions for drying yards. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a suspended veneer drying equipment, which can realize the loading, loading, transportation, unloading and rotation circulation of plywood veneers through the efficient linkage of the loading and transporting station, the unloading station, the rotation circulation station and the drying room, and realize the release of internal moisture of the veneer raw materials through the heat energy of external industrial waste gas in a closed space to meet the standards of veneer raw materials for the plywood pressing production line.

[0005] The hanging veneer drying equipment of the present invention comprises a drying room, a drying line I, and a drying line II, wherein the drying line I comprises a loading station I, a loading and transporting station I, a rotary circulation station I, and an unloading station I, wherein the loading and transporting station I is vertically arranged on one side of the loading station I, the rotary circulation station I is located between the loading station I and the loading and transporting station I, and the unloading station I is located at the exit end of the loading and transporting station I; The upper plate station I includes a transport mechanism and a flip plate lifting mechanism; wherein the transport mechanism includes a belt conveyor I and a double-strip conveyor belt I, and the double-strip conveyor belt I is arranged on one side of the belt conveyor outlet end; the flip plate lifting mechanism includes a bottomless receiving plate, a baffle, a clamping protrusion, a bottom receiving plate, a support rod, a 90° right-angle motor I, a gripper manipulator I, and an electric cylinder; one end of the bottomless receiving plate is connected to the output shaft key of the 90° right-angle motor I fixed on the support rod, and when the plate is connected, the bottomless receiving plate is arranged between the double-strip conveyor belt I and cooperates with it, and the bottomless receiving plate The other end of the bottomless receiving plate is butted against the exit end of the belt conveyor I, and a clamping protrusion is provided on the other end of the bottomless receiving plate on the side opposite to the baffle; the bottom receiving plate is connected to the piston rod of the electric cylinder via a key, and the bottom receiving plate is provided at the bottom of the baffle, which is fixed to the support rod via a connecting rod and is located on the side above the output shaft of the 90° right-angle motor I; when the plate is placed on the bottomless receiving plate, the plate is flipped vertically and aligned parallel to the baffle, driving the single plate that slides onto the bottom receiving plate to flip and cling to the baffle, and the gripper manipulator I is fixed to the top of the support rod and is located directly above the bottom receiving plate; The photoelectric sensor for the upper plate position is installed on one side of the exit end of the belt conveyor I, which is used to detect the signal of the single plate entering the double-strip conveyor I; the bottomless receiving plate is composed of 3 strips, and the intervals between the strips cooperate with the double-strip conveyor The loading and handling station I includes an arc track, a gear unit I, a gear unit II, a loading station photoelectric sensor, a motor, a sprocket bracket, a driving sprocket, a driven sprocket, a chain, a shifting tooth, a receiving track, and a clamping and hanging mechanism; the two ends of the two parallel receiving tracks are respectively arranged on bracket II and bracket III, the two arc tracks are respectively inclined and arranged at the entrance ends of the two parallel receiving tracks and connected thereto, the gear unit I is fixed on bracket II, the gear unit II is fixed on the right end of the gear unit I and is located above the arc track; the driven sprocket is arranged on bracket II through the sprocket bracket and is located on one side of the gear unit I, and the motor The machine is fixed on bracket III, the output shaft of the motor is fixedly connected to the driving sprocket, the driving sprocket and the driven sprocket are connected by a chain, and the driving sprocket drives the driven sprocket through the chain. Several clamping and hanging mechanisms are set on two parallel receiving rails, and several shifting teeth are set on the chain to move with the chain, which are used to shift the clamping and hanging mechanisms on the receiving rails; the photoelectric sensor of the loading station is installed on one side of the gear unit I to detect the signal of the shifting teeth passing; the gear unit I or the gear unit II is composed of two or more guide rod cylinders, and the distance between the guide rods of the gear unit I and the gear unit II can accommodate a clamping and hanging mechanism; The driven sprocket is movably connected to the crossbar of the sprocket bracket through a bearing; the clamping and hanging mechanism includes a pulley, a pulley connecting rod, a connecting frame, a central shaft, an electromagnet suction surface, and a clamp; the two pulleys are connected by a pulley connecting rod, the electromagnet suction surface is fixed to the pulley connecting rod, the electromagnet suction surface is fixed to the central shaft through the connecting frame, the clamp is sleeved on the central shaft through a spring on it, a rubber pad is provided on the inner side of the clamping part of the clamp, and the pulley is arranged in the receiving track and cooperates with it; The clamp structure is a conventional structure, comprising a pressure plate, a spring, and a clamping portion.

[0006] The rotary circulation station I includes a servo motor, a rotating arm, a rotating arm support frame, a telescopic cylinder, and an electromagnet; the servo motor is fixed to the top of the support frame I, the electromagnet is installed at the bottom of the telescopic rod of the telescopic cylinder, the telescopic cylinder is fixed to one end of the rotating arm, and the other end of the rotating arm is vertically connected to the output shaft of the servo motor. The rotating arm support frame is fixed to the top of the support frame I and is located on one side of the servo motor. The rotating arm support frame is a semicircular arc rod used to support the rotating arm to rotate 0-180 degrees along the rotating arm support frame, and the clamping and hanging mechanism sent out from the unloading station II of the drying line II is sent to the gripper manipulator I, and then sent to the loading and handling station I; The unloading station I includes a 90° right-angle motor II, a bottom-type receiving plate, a gripper manipulator II, an unloading station photoelectric sensor I, a belt conveyor II, a double-strip conveyor belt II, and a gripper manipulator II. The gripper manipulator II is fixed to the top of the bracket III, the 90° right-angle motor II is fixed to the bottom of the bracket III, the double-strip conveyor belt II is located between the bracket III and the belt conveyor II, and the bottom end of the bottom-type receiving plate is keyed to the output shaft of the 90° right-angle motor II and is located below the gripper manipulator II. During unloading, the bottom-type receiving plate is arranged between the double-strip conveyor belts II and cooperates with them, and the upper end of the bottom-type receiving plate is docked with the entrance end of the belt conveyor II. The unloading station photoelectric sensor I is arranged on the exit end of the receiving track of the loading circulation station I. A unloading station photoelectric sensor II is installed on one side of the entrance end of the belt conveyor II to detect the signal of the single board sending out of the double-strip conveyor belt II. The bottom receiving plate is composed of three strips, and the intervals between the strips cooperate with the double strip conveyor belt; The drying room body includes an insulating shell, a centrifugal fan, a circulating fan, an axial flow exhaust fan, and a temperature and humidity sensor; except for the inlet end of the belt conveyor I and the outlet end of the belt conveyor II, the remaining equipment of the drying line I is arranged in the insulating shell, and one or more centrifugal fans are arranged at the air inlets at the lower part of the front and rear sides of the insulating shell, and the one or more centrifugal fans are connected to the hot air source through air ducts. One or more circulating fans are arranged at the circulating fan ports at the upper part of the front and rear sides of the insulating shell; two or more axial flow exhaust fans are arranged at the exhaust port on the top of the insulating shell, and a temperature and humidity sensor is arranged in the insulating shell; Drying Line I and Drying Line II have the same structure and are arranged opposite to each other. The rotating arm II of the rotary circulation station II of Drying Line II rotates 0-180° to deliver the clamping and hanging mechanism II sent out from the unloading station I of Drying Line I to the loading station II and then to the loading and handling station II.

[0007] The device of the present invention also includes a conventional controller, which is respectively connected to the belt conveyor, double-strip conveyor belt, 90° right-angle motor, gripper manipulator, electric cylinder, motor, servo motor, centrifugal fan, circulating fan, and axial flow exhaust fan in the drying single line I and the drying single line II, and is used to control the operation of the above components; the photoelectric sensor of the upper plate station, the photoelectric sensor of the unloading station, and the temperature and humidity sensors are respectively connected to the controller, and the controller is used to receive signals from the above components and control the operation of the above components according to the signals.

[0008] All electrical components in the above devices are connected to a power source; When the above device is used, the centrifugal fan, circulating fan and axial flow exhaust fan on the drying room body are turned on to pass hot air into the drying room body, so that the temperature inside the room is raised to the temperature required for drying; the veneer to be dried is placed on the belt conveyor Ⅰ of the upper plate station Ⅰ in the drying single line Ⅰ, and at the same time the flip plate lifting mechanism is in the plate receiving state. Under the action of the 90° right-angle motor Ⅰ, the bottomless receiving plate is placed between and parallel to the double-strip conveyor belt Ⅰ, and the double-strip conveyor belt Ⅰ sends the veneer to the bottomless receiving plate. When the upper plate station light When the electric sensor detects the signal that the single board enters the double-strip conveyor belt I, the bottomless receiving plate drives the single board to rotate to a state perpendicular to the ground and parallel to the baffle under the action of the 90° right-angle motor I, and the single board that slides into the bottom receiving plate is pressed against the baffle through the clamping protrusion; the rotating arm rotates 0-90° along the rotating arm support frame, and the clamping suspension mechanism sent out from the unloading station II of the drying single line II is sent to the gripper robot I. The fingers of the gripper robot I act on the pressure plate of the clamp and tighten it, and the clamping part of the clamp opens from the closed state, etc. The lifting mechanism for the flip plate is fed; the electric cylinder is turned on and the piston rod is extended, the bottom receiving plate is lifted, and the single board is driven to move upward between the bottomless receiving plate and the baffle and move to the clamping part of the opened clamp. The clamping manipulator I is released, and the clamping part of the clamp is naturally closed to clamp the single board. The clamping suspension mechanism is rotated 90-180 degrees under the action of the rotating arm to the arc track of the loading and handling station I. The clamping suspension mechanism is placed on the arc track. When the photoelectric sensor of the loading station detects that the shifting gear has passed, the guide rod at the bottom of the gear unit I is retracted, and the gear unit The clamping suspension mechanism between gear units I and II slides naturally into the receiving track along the arc track. The guide rod at the bottom of gear unit I is lowered and the guide rod at the bottom of gear unit II is retracted, placing a clamping suspension mechanism between gear units I and II. The motor drives the active sprocket and the driven sprocket to rotate. The shifting teeth on the chain shift the clamping suspension mechanism forward along the receiving track and confine the clamping suspension mechanism between two pairs of shifting teeth. Similarly, the clamping suspension mechanism continuously delivers the clamped veneer to the loading and handling station I for drying. After drying is completed, when the photoelectric sensor I of the unloading station detects that the clamping suspension mechanism is at the exit end of the receiving track, the bottom-type receiving plate is kept vertical to the ground by the 90° right-angle motor, and the fingers of the gripper manipulator II act on the clamps of the clamping suspension mechanism. The veneer falls into the vertical bottom-type receiving plate by its own gravity; 2 seconds after receiving the closing signal of the gripper manipulator II fingers, under the action of the 90° right-angle motor II, the bottom-type receiving plate rotates and tilts with the veneer until the veneer falls onto the double-strip conveyor belt II. Under the action of the conveyor belt, the dried veneer enters the belt conveyor II and is output to the stacking area at a speed of 1m / s; after the photoelectric sensor II of the unloading station detects that the veneer has completely entered the belt conveyor II, the bottom-type receiving plate returns to its vertical state under the action of the 90° right-angle motor II; When the photoelectric sensor Ⅰ of the unloading station Ⅰ detects that the clamping suspension mechanism is at the exit end of the receiving track (0°), the telescopic cylinder Ⅱ of the rotary circulation station Ⅱ in the drying line Ⅱ at the exit end of the receiving track is ventilated, and the telescopic cylinder Ⅱ extends the electromagnet Ⅱ and is energized. When the clamping suspension mechanism reaches the predetermined position at the exit end, it is fixed by magnetic adsorption; when the unloading station operation is completed, the servo motor in the drying line Ⅱ drives the rotating arm Ⅱ to rotate from 0° to 90°, so that the clamping suspension mechanism is separated from the receiving track and enters the loading station Ⅱ of the drying line Ⅱ to load the plate, and then rotates from 90° to 180°, and the electromagnet is de-energized, so that the clamping suspension mechanism enters the loading and handling station Ⅱ to complete the loading, and the rotating arm Ⅱ returns from the drying line Ⅱ to the unloading position in the drying line Ⅰ, and so on. The clamping suspension mechanism is cyclically used between the drying line Ⅰ and the drying line Ⅱ.

[0009] The centrifugal fans and air ducts inside the drying room send hot air into the drying room. The centrifugal fans on both sides form convection to achieve a certain circulation effect of the hot air inside. The circulating fan continues to circulate the rising hot air at a uniform speed to the drying area below for hot air drying. The circulating fan ensures the internal hot air circulation, and the axial exhaust fan is used to discharge the low-temperature air and water vapor; the temperature and humidity sensor is used to detect the temperature and humidity inside the drying room. When the internal temperature or humidity exceeds the preset value, the temperature and humidity sensor on the top sends a signal, and the exhaust fan increases its power output and returns to normal working state when the temperature and humidity drop.

[0010] The beneficial effects of the present invention are: First, drying efficiency is improved: the circulating structure and suspended conveyor ensure that both sides of the veneer are fully heated, completing drying in 15 minutes (compared to 2 hours with traditional processes). The single-line production capacity reaches 500 sheets / hour, and the symmetrical and coordinated layout of the two production lines reaches a circulating capacity of 1,000 sheets / hour. The spacing between the two tine teeth is less than 50mm, and the dense layout increases the hot air utilization rate by 40%, significantly reducing unit energy consumption. Second, precise quality control: Closed-loop timing control reduces moisture content fluctuations to ±0.5% (the industry standard is ±2%), completely resolving the pain point of panel breakage in the export market. Flexible clamping with rubber pads reduces surface damage to less than 0.1%, 30 times lower than manual handling. Third, both production and operating costs are reduced (core advantage): Production cost optimization: Modular design reduces the cost of the entire machine by 25%, and the standardized replacement cost of wearing parts (such as rubber pads and pulleys) is reduced by 60%. Operating costs are drastically reduced: energy consumption per ton of board is 40% less than that of traditional drying rooms, manual intervention is reduced by 90%, and overall operating costs are reduced by 48%. Fourth, efficient use of land resources: the vertical hanging structure of the present invention reduces the floor space to 1 / 10 of the traditional drying yard (50m 2 vs 500 m 2 ), there is no longer any need for artificial drying in the mountains, breaking through the restrictions of arable land policies.

[0011] Fifth, low failure rate: the double-stage interception design of the gear unit ensures zero jamming rate; the loading station is accurate in feeding and precise in clamping, and the rubber pad increases the friction between the veneer raw material and the clamp, ensuring that no veneer is leaked or dropped during the drying process; Sixth, stable transmission and long service life: the chain transmission is stable, the chain transmission system has a tight side sinking design to avoid chain collapse, and the toggle transmission of the shifting teeth and the pulley connecting rod has a wear life of over 8000 hours; Seventh, the present invention is highly independent and does not require large-scale mechanical auxiliary support. It can work independently. The modular design supports the rapid replacement of aging parts, reducing maintenance hours by 70%, which can meet actual work requirements. The present invention combines the above advantages, greatly reduces the production cost and operating cost of the whole machine, integrates PLC control technology in the overall structure, reduces the number of control components, and is simple and convenient to maintain. PLC control ensures accurate connection between the actions of each workstation, each workstation has independent working ability, and the shutdown of a single workstation does not affect the movement of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the drying single line I and the drying single line II of the device of the present invention; Figure 2 This is a schematic diagram of the top structure of the drying line I and the drying line II of the device of the present invention; Figure 3 This is a structural diagram of the loading station I; Figure 4 It is a schematic diagram of the partial structure of the bottom receiving plate and the electric cylinder; Figure 5 It is a schematic diagram of the partial structure of the bottomless receiving plate and baffle; Figure 6 It is a structural diagram of the gripper robot; Figure 7 This is a partial structural diagram of the loading and handling station I; Figure 8 Schematic diagram of the partial structure of the gear unit I and the gear unit II; Figure 9 This is a partial structural diagram of the loading and handling station I; Figure 10 To undertake the track structure diagram; Figure 11 It is a schematic diagram of the partial structure of the gear unit I and the gear unit II; Figure 12 This is a structural diagram of the rotary circulation station I; Figure 13 Schematic diagram of the clamping suspension mechanism structure; Figure 14 Schematic diagram of the local structure of the clamp; Figure 15 This is the structural diagram of blanking station I; Figure 16 This is a schematic diagram of the top view of the blanking station I; Figure 17 This is a schematic diagram of the drying room structure; Figure 18 This is a schematic diagram of the internal structure of the drying room; In the figure: 1-bottomless receiving plate; 2-baffle; 3-clamping protrusion; 4-bottom receiving plate; 5-support rod; 6-90° right-angle motor I; 7-gripper manipulator I; 8-electric cylinder; 9-piston rod; 10-belt conveyor I; 11-double-strip conveyor belt I; 12-photoelectric sensor for loading station; 13-bracket I; 14-arc track; 15-gear unit I; 16-gear unit II; 17-photoelectric sensor for loading station; 18-motor 19-sprocket bracket; 20-driving sprocket; 21-driven sprocket; 22-chain; 23-shifting gear; 24-bearing; 25-receiving track; 26-pulley; 27-pulley connecting rod; 28-connecting frame; 29-spring; 30-center axis; 31-electromagnet suction surface; 32-clamp ;33-Rubber pad;34-90° right-angle motor II;35-Bottom-type receiving plate;36-Unloading station photoelectric sensor I;37-Unloading station photoelectric sensor II;38-Servo motor;39-Swivel arm;40-Swivel arm support frame;41-Telescopic cylinder;42-Electromagnet;43-Gripper manipulator II;44-Belt conveyor II;45-Double strip conveyor belt II;46-Bracket II;47-Bracket III;48-Insulation shell;49-Centrifugal fan;50-Circulating fan;51-Axial flow exhaust fan;52-Air duct;53-Temperature and humidity sensor;54-Air inlet;55-Exhaust outlet;56-Circulating fan outlet;57-Loading station I;58-Loading and handling station I;59-Rotation circulation station I;60-Unloading station I. DETAILED DESCRIPTION

[0013] The present invention is further illustrated by the following examples, but these examples do not limit the scope of protection of the present invention. Unless otherwise specified, the devices in this embodiment are conventional commercially available devices and are used in a conventional manner. Example 1: Figure 1-16 As shown, the hanging veneer drying equipment includes a drying room, a drying line I, and a drying line II; the drying line I and the drying line II have the same structure and are arranged opposite to each other; except for the inlet end of the belt conveyor I and the outlet end of the belt conveyor II, the remaining components of the drying line I are arranged in the heat-insulating housing 49 (the same applies to the drying line II); The drying room includes an insulating shell 48, a centrifugal fan 49, a circulating fan 50, an axial flow exhaust fan 51, and a temperature and humidity sensor 53. Two centrifugal fans 49 are installed at the air inlets 54 at the lower front and rear sides of the insulating shell. The two centrifugal fans 49 are connected to the hot air source through a three-way air duct. Four circulating fans 50 are respectively installed at the circulating fan ports 56 at the upper front and rear sides of the insulating shell. Four axial flow exhaust fans 51 are installed at the exhaust port 55 at the top of the insulating shell. Two temperature and humidity sensors 53 are installed in the insulating shell. The drying line I includes a loading station I 57, a loading and transporting station I 58, a rotating circulation station I 59, and an unloading station I 60. The loading and transporting station I is vertically arranged on one side of the loading station I, the rotating circulation station I is located between the loading station I and the loading and transporting station I, and the unloading station I is located at the exit of the loading and transporting station I. The upper plate station I includes a transport mechanism and a flip plate lifting mechanism; wherein the transport mechanism includes a belt conveyor I10, a double-strip conveyor belt I11, and an upper plate station photoelectric sensor 12, and the double-strip conveyor belt I11 is arranged on one side of the exit end of the belt conveyor 10; the flip plate lifting mechanism includes a bottomless receiving plate 1, a baffle 2, a clamping protrusion 3, a bottom receiving plate 4, a support rod 5, a 90° right-angle motor I6, a gripper manipulator I7, and an electric cylinder 8; and one end of the bottomless receiving plate 1 is keyed to the output shaft of the 90° right-angle motor I6 fixed on the support rod 5. When the plate is connected, the bottomless receiving plate 1 is arranged between the double-strip conveyor belts I11 and cooperates with them, and the other end of the bottomless receiving plate 1 is keyed to the belt conveyor I10 The outlet end is butted, and a clamping protrusion 3 is provided on the other end of the bottomless receiving plate 1 on the side opposite to the baffle; the bottom receiving plate 4 is connected to the piston rod 9 of the electric cylinder 8 by a key, and the bottom receiving plate 4 is set at the bottom of the baffle 2, and the baffle 2 is fixed to the support rod 5 by a connecting rod and is located on the side above the output shaft of the 90° right-angle motor I; when loading the plate, the bottomless receiving plate 1 is flipped vertically and aligned parallel to the baffle 2, and the single plate sliding onto the bottom receiving plate 4 is driven to flip and cling to the baffle 2, and the gripper manipulator I 7 is fixed to the top of the support rod 5 and is located directly above the bottom receiving plate 4; a photoelectric sensor 12 for loading the plate is installed on one side of the outlet end of the belt conveyor I 10 to detect the signal of the single plate entering the double-strip conveyor belt I; The loading and handling station I includes an arc track 14, a gear unit I 15, a gear unit II 16, a loading station photoelectric sensor 17, a motor 18, a sprocket bracket 19, a driving sprocket 20, a driven sprocket 21, a chain 22, a shifting tooth 23, a receiving track 25, and a clamping and hanging mechanism; wherein the clamping and hanging mechanism includes a pulley 26, a pulley connecting rod 27, a connecting frame 28, a central axis 30, an electromagnet suction surface 31, and a clamp 32; the two pulleys 26 are connected by a pulley connecting rod 27, and the electromagnet suction surface 3 1 is fixed on the pulley connecting rod 27, the electromagnet suction surface 31 is fixedly connected to the central shaft 30 through the connecting frame 28, the clamp 32 is sleeved on the central shaft 30 through the spring 29 on it, and a rubber pad 33 is provided on the inner side of the clamping part of the clamp; the two parallel receiving rails 25 are respectively provided at both ends on the bracket II 46 and the bracket III 47, the pulley 26 is provided in the receiving rail 25 and slides with each other, and the two arc-shaped rails 14 are respectively provided at the entrance ends of the two parallel receiving rails 25 and communicate with them. , the gear unit I 15 is fixed on the bracket II 46, the gear unit II 16 is fixed on the right end of the gear unit I 15 and is located above the arc track, the gear unit I or the gear unit II is composed of two guide rod cylinders, and the distance between the guide rods of the gear unit I and the gear unit II can accommodate a clamping suspension mechanism; the sprocket bracket 19 is set on the bracket II 46, the driven sprocket 21 is movably connected to the cross bar of the sprocket bracket 19 through the bearing 24, the driven sprocket 21 is located on one side of the gear unit I 15, and the motor 18 Fixed on bracket III, the output shaft of the motor 18 is fixedly connected to the driving sprocket 20, and the driving sprocket 20 and the driven sprocket 21 are connected by a chain 22. The driving sprocket 20 drives the driven sprocket 21 to rotate through the chain 22. Several clamping and hanging mechanisms are set on two parallel receiving rails 25. Several shifting teeth 23 are set on the chain 22 to rotate with the chain 22, which are used to shift the clamping and hanging mechanisms to move on the receiving rails 25; the photoelectric sensor 17 of the loading station is installed on the side of the gear unit I 15; Rotary circulation station I includes a servo motor 38, a rotating arm 39, a rotating arm support frame 40, a telescopic cylinder 41, and an electromagnet 42; the servo motor 38 is fixed to the top of the bracket I 13, the electromagnet 42 is installed at the bottom of the telescopic rod of the telescopic cylinder 41, the telescopic cylinder 41 is fixed to one end of the rotating arm 39, and the other end of the rotating arm 39 is vertically connected to the output shaft of the servo motor 38. The rotating arm support frame 40 is fixed to the top of the bracket I and is located on one side of the servo motor 38. The rotating arm support frame 40 is a semicircular arc-shaped rod used to support the rotating arm 39 for 0-180° rotation along the rotating arm support frame, and delivers the clamping and hanging mechanism sent from the unloading station II of the drying line II to the gripper robot I 7, and then to the loading and handling station I; The unloading station I includes a 90° right-angle motor II 34, a bottom-type receiving plate 35, a gripper manipulator II 43, a unloading station photoelectric sensor I 36, a unloading station photoelectric sensor II 37, a belt conveyor II 44, a double-strip conveyor belt II 45, and a gripper manipulator II 43. The gripper manipulator II 43 is fixed on the top of the bracket III 47, the 90° right-angle motor II 34 is fixed on the bottom of the bracket III 47, the double-strip conveyor belt II is located between the bracket III 47 and the belt conveyor II, and the bottom end of the bottom-type receiving plate 35 is keyed to the 90° right-angle motor. The bottom receiving plate 35 is arranged between and cooperates with the double-strip conveyor belt Ⅱ 45 during unloading. The upper end of the bottom receiving plate 35 is docked with the inlet end of the belt conveyor Ⅱ 44. The unloading station photoelectric sensor Ⅰ 36 is arranged on the outlet end of the receiving track 25 of the loading circulation station Ⅰ. The unloading station photoelectric sensor Ⅱ 37 is installed on one side of the inlet end of the belt conveyor Ⅱ 44 to detect the signal of the single board being sent out of the double-strip conveyor belt Ⅱ. The rotating arm II of the rotary circulation station II of the drying line II rotates 0-180 degrees to send the clamping and hanging mechanism sent out from the unloading station I of the drying line I to the loading station II, and then to the loading and handling station II. The clamping and hanging mechanism is circulated between the drying lines I and II.

[0014] Example 2: The device structure of this embodiment is the same as that of Example 1, except that it also includes a controller, which is respectively connected to the belt conveyor, double-strip conveyor belt, 90° right-angle motor, gripper robot, electric cylinder, motor, servo motor, centrifugal fan, circulating fan, and axial flow exhaust fan in the drying line I and the drying line II, and is used to control the operation of the above components; the photoelectric sensor of the loading station, the photoelectric sensor of the unloading station, and the temperature and humidity sensor are respectively connected to the controller, and the controller is used to receive signals from the above components.

[0015] When the above device is used, the veneer to be dried is placed on the belt conveyor Ⅰ10 of the upper plate station Ⅰ58 in the drying single line Ⅰ, and the flip-plate lifting mechanism is in the plate receiving state. The bottomless receiving plate 1 is placed between and parallel to the double-strip conveyor belt Ⅰ11 under the action of the 90° right-angle motor Ⅰ6. The double-strip conveyor belt Ⅰ11 sends the veneer to the bottomless receiving plate at a speed of 1m / s. When the photoelectric sensor 12 of the upper plate station detects the veneer entry signal, under the action of the 90° right-angle motor Ⅰ6, the bottomless receiving plate drives the veneer to rotate to a state perpendicular to the ground and aligned parallel to the baffle, and slides into the bottom receiving plate 4 through the clamping protrusion 3. The veneer is pressed against the baffle; the rotating arm 39 rotates 0-90° along the rotating arm support frame 40, and sends the clamping and hanging mechanism sent out from the unloading station II of the drying single line II to the clamping manipulator I7. The fingers of the clamping manipulator I7 act on the pressure plate of the clamp and tighten it. The clamping part of the clamp opens from the closed state to a width of 50mm, waiting for the flap lifting mechanism to feed; the electric cylinder 8 opens the piston rod 9 and extends, and the bottom receiving plate 4 is lifted by 100mm, driving the veneer to move upward between the bottomless receiving plate 1 and the baffle 2 and move into the clamping part of the opened clamp. After the upward movement is in place, the clamping manipulator I7 is released, and the rubber pad 34 in the clamping part of the clamp tightens the veneer (clamping force ≥ 200N); The clamping suspension mechanism rotates to the arc track 14 of the loading and handling station I under the action of the rotating arm 39 and places the clamping suspension mechanism on the arc track. When the photoelectric sensor 17 of the loading station detects that the shifting gear 23 passes by, the guide rod at the bottom of the gear unit I 15 retracts, and the clamping suspension mechanism between the gear unit I 15 and the gear unit II 16 slides naturally along the arc track 14 into the receiving track 25. Then the guide rod at the bottom of the gear unit I is lowered and the guide rod at the bottom of the gear unit II is retracted, placing a clamping suspension mechanism into the gear unit I. Between the position unit I and the gear unit II; the motor 18 drives the active sprocket 20 at a speed of 2r / min to drive the driven sprocket 21 to rotate, and the shifting teeth 23 on the chain 22 shift a clamping suspension mechanism every 5 seconds to move forward along the receiving track and limit the clamping suspension mechanism between two pairs of shifting teeth. Similarly, the clamping suspension mechanism continuously feeds the clamped single board into the receiving track (total length of 20 meters), moves at a constant speed in the hot air drying area for 15 minutes for drying, and then arrives at the unloading station I to wait for the electromagnet 42 to be energized and positioned; After the drying is completed, when the photoelectric sensor I 36 of the unloading station I detects that the clamping suspension mechanism is at the exit end of the receiving track, the bottom-type receiving plate 35 is kept vertical to the ground under the action of the 90° right-angle motor II 34, and the fingers of the gripper manipulator II 43 act on the clamps of the clamping suspension mechanism, and the veneer falls into the bottom-type receiving plate in the vertical state by its own gravity; 2 seconds after receiving the closing signal of the gripper manipulator II fingers, under the action of the 90° right-angle motor II, the bottom-type receiving plate 35 rotates and tilts with the veneer until the veneer falls on the double-strip conveyor belt II 45. Under the action of the conveyor belt, the dried veneer enters the belt conveyor II 44 and is output to the stacking area at a speed of 1m / s; after the photoelectric sensor II 37 of the unloading station detects that the veneer has completely entered the belt conveyor II 44, the bottom-type receiving plate returns to the vertical state under the action of the 90° right-angle motor II; When the photoelectric sensor I 36 of the unloading station detects that the clamping suspension mechanism is at the exit end (0°) of the receiving track, the telescopic cylinder II of the rotary circulation station II in the drying line II at the exit end of the receiving track is ventilated, and the telescopic cylinder II extends the electromagnet II and is energized. When the clamping suspension mechanism reaches the predetermined position at the exit end, it is fixed by magnetic adsorption; when the unloading station operation is completed, the servo motor in the drying line II drives the rotating arm II to rotate from 0° to 90°, so that the clamping suspension mechanism is separated from the receiving track 25 and enters the loading station II of the drying line II to load the plate, and then rotates from 90° to 180°, and the electromagnet is powered off, so that the clamping suspension mechanism enters the loading and handling station II to complete the loading, and the electromagnet is powered off, and the rotating arm II returns from the drying line II to the unloading position in the drying line I, and so on. After the drying room is started, the air duct 52 transports the hot air to the centrifugal fan 49, which speeds up the airflow and injects it evenly into the interior to perform hot air drying on the single boards on the loading and handling stations. The centrifugal fans 49 on both sides form convection to achieve a certain circulation effect of the hot air inside. The circulating fan 50 continues to circulate the rising hot air flow at a uniform speed to the drying area below for hot air drying. When the internal temperature or humidity exceeds the preset value, the temperature and humidity sensor 53 on the top sends a signal, and the axial flow exhaust fan 51 increases the power output and resumes normal working state when the temperature and humidity drop.

[0016] The device of the present invention has the advantages of reasonable structural design, high degree of automation, accurate loading and unloading, neat circulation posture, high work efficiency, reduced labor costs, and strong practicality, thereby effectively solving the problems and shortcomings raised in the background technology of the present invention.

[0017] The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings. It should be noted that the photoelectric sensors are all of the same model, but the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A hanging veneer drying equipment, characterized by: Including drying room, drying line I and drying line II; The drying line I includes a loading station I, a loading and transporting station I, a rotary circulation station I, and an unloading station I. The loading and transporting station I is vertically arranged on one side of the loading station I, the rotary circulation station I is located between the loading station I and the loading and transporting station I, and the unloading station I is located at the exit of the loading and transporting station I. The loading station I includes a transport mechanism and a plate lifting mechanism; The transport mechanism includes a belt conveyor I (10) and a double-strip conveyor belt I (11), and the double-strip conveyor belt I (11) is arranged on one side of the outlet end of the belt conveyor (10); the flap lifting mechanism includes a bottomless receiving plate (1), a baffle (2), a clamping protrusion (3), a bottom receiving plate (4), a support rod (5), a 90° right-angle motor I (6), a gripper manipulator I (7), and an electric cylinder (8); and one end of the bottomless receiving plate (1) is key-connected to the output shaft of the 90° right-angle motor I (6) fixed on the support rod (5). When the plates are connected, the bottomless receiving plate (1) is arranged between the double-strip conveyor belt I (11) and cooperates with it. The other end of the bottomless receiving plate (1) is key-connected to the output shaft of the 90° right-angle motor I (6) fixed on the support rod (5). The end is docked with the outlet end of the belt conveyor I (10), and a clamping protrusion (3) is provided on the other end of the bottomless receiving plate (1) relative to the baffle; the bottom receiving plate (4) is connected to the piston rod (9) of the electric cylinder (8) through a key, and the bottom receiving plate (4) is arranged at the bottom of the baffle (2), and the baffle (2) is fixed on the support rod (5) through a connecting rod and is located on the side above the output shaft of the 90° right-angle motor I; when the plate is put on, the bottomless receiving plate (1) is turned vertically and aligned parallel to the baffle (2), and the single plate sliding on the bottom receiving plate (4) is driven to turn and adhere to the baffle (2), and the gripper manipulator I (7) is fixed on the top of the support rod (5) and is located directly above the bottom receiving plate (4); The loading and transporting station I comprises an arc track (14), a shift unit I (15), a shift unit II (16), a loading station photoelectric sensor (17), a motor (18), a sprocket bracket (19), a driving sprocket (20), a driven sprocket (21), a chain (22), a shifting tooth (23), a receiving track (25), and a clamping and hanging mechanism; two parallel receiving tracks (25) are respectively arranged at both ends on the bracket II and the bracket III, the two arc tracks (14) are respectively arranged at the entrance ends of the two parallel receiving tracks (25) and are connected thereto, the shift unit I (15) is fixed on the bracket II, and the shift unit II (16) is fixed at the right end of the shift unit I (15) and is located above the arc track The driven sprocket (21) is arranged on the bracket II through the sprocket bracket (19) and is located on one side of the gear unit I (15). The motor (18) is fixed on the bracket III. The output shaft of the motor (18) is fixedly connected to the driving sprocket (20). The driving sprocket (20) and the driven sprocket (21) are connected by a chain (22). The driving sprocket drives the driven sprocket (21) to rotate through the chain (22). A plurality of clamping and hanging mechanisms are arranged on two parallel receiving rails (25). The chain (22) is provided with a plurality of shifting teeth (23) that move following the chain (22) and are used to shift the clamping and hanging mechanism to move on the receiving rail (25). The photoelectric sensor (17) of the loading station is installed on one side of the gear unit I (15). The rotary circulation station I comprises a servo motor (38), a rotating arm (39), a rotating arm support frame (40), a telescopic cylinder (41), and an electromagnet (42); the servo motor (38) is fixed to the top of the bracket I (13), the electromagnet (42) is installed at the bottom of the telescopic rod of the telescopic cylinder (41), the telescopic cylinder (41) is fixed to one end of the rotating arm (39), and the other end of the rotating arm (39) is vertically connected to the output shaft of the servo motor (38), the rotating arm support frame (40) is fixed to the top of the bracket I and is located on one side of the servo motor (38), the rotating arm support frame (40) is a semicircular arc rod, used to support the rotating arm (39) to rotate 0-180 degrees along the rotating arm support frame (40), and send the clamping suspension mechanism sent out from the unloading station II of the drying single line II to the clamping claw manipulator I (7), and then to the loading and handling station I; The unloading station I comprises a 90° right-angle motor II (34), a bottom-type receiving plate (35), a gripper manipulator II (43), a unloading station photoelectric sensor I (36), a belt conveyor II (44), and a double-strip conveyor belt II (45). The gripper manipulator II (43) is fixed on the top of the bracket III (47), the 90° right-angle motor II (34) is fixed on the bottom of the bracket III, the double-strip conveyor belt II is located between the bracket III and the belt conveyor II, and the bottom-type receiving plate (35) is provided. The bottom end of the receiving plate (35) is key-connected to the output shaft of the 90° right-angle motor II (34) and is located below the gripper manipulator II (43); when unloading, the bottom-type receiving plate (35) is arranged between the double-strip conveyor II (45) and cooperates with it, and the upper end of the bottom-type receiving plate (35) is docked with the inlet end of the belt conveyor II (44); the unloading station photoelectric sensor I (36) is arranged on the outlet end of the receiving track (25) of the loading circulation station I; The drying room body includes an insulating shell (48), a centrifugal fan (49), a circulating fan (50), an axial flow exhaust fan (51), and a temperature and humidity sensor (53); except for the inlet end of the belt conveyor I and the outlet end of the belt conveyor II, the remaining equipment of the drying line I are all arranged in the insulating shell (48); at the air inlet (54) at the lower part of the front and rear sides of the insulating shell (48), one or more centrifugal fans (49) are arranged; the one or more centrifugal fans (49) are connected to the hot air source through the air duct; at the circulating fan port (56) at the upper part of the front and rear sides of the insulating shell; at least two axial flow exhaust fans (51) are arranged at the exhaust port (55) at the top of the insulating shell; and a temperature and humidity sensor (53) is arranged in the insulating shell (48); Drying Line I and Drying Line II have the same structure and are arranged opposite to each other. The rotating arm II of the rotary circulation station II of Drying Line II rotates 0-180° to send the clamping and hanging mechanism sent out from the unloading station I of Drying Line I to the loading station II and then to the loading and handling station II.

2. The hanging veneer drying equipment according to claim 1, characterized in that: A photoelectric sensor (12) for loading a board is installed on one side of the exit end of the belt conveyor I (10) for detecting a signal when a single board enters the double-strip conveyor I; a photoelectric sensor (37) for unloading a board is installed on one side of the entrance end of the belt conveyor II (44) for detecting a signal when a single board exits the double-strip conveyor II.

3. The hanging veneer drying equipment according to claim 1, characterized in that: The shift unit I or the shift unit II is composed of two or more guide rod cylinders, and the distance between the guide rods of the shift unit I and the shift unit II can accommodate a clamping suspension mechanism.

4. The hanging veneer drying equipment according to claim 1, characterized in that: The driven sprocket (21) is movably connected to the crossbar of the sprocket bracket (19) through a bearing (24).

5. The hanging veneer drying equipment according to claim 4, characterized in that: The clamping suspension mechanism comprises a pulley (26), a pulley connecting rod (27), a connecting frame (28), a central shaft (30), an electromagnet suction surface (31), and a clamp (32); the two pulleys (26) are connected by the pulley connecting rod (27), the electromagnet suction surface (31) is fixed on the pulley connecting rod (27), the electromagnet suction surface (31) is fixed to the central shaft (30) through the connecting frame (28), the clamp (32) is sleeved on the central shaft (30) through the spring (29) thereon, a rubber pad (33) is provided on the inner side of the clamping portion of the clamp, and the pulley (26) is provided in the receiving track (25) and slides with it.

6. The hanging veneer drying equipment according to claim 1, characterized in that: The bottomless receiving plate (1) or the bottomed receiving plate (35) is composed of three strips, and the intervals between the strips cooperate with the double-strip conveyor belt.

7. The hanging veneer drying equipment according to claim 2, characterized in that: It also includes a controller, which is respectively connected to the belt conveyor, double-strip conveyor belt, 90° right-angle motor, gripper robot, electric cylinder, motor, servo motor, centrifugal fan, circulating fan, and axial flow exhaust fan in the drying single line I and the drying single line II, and is used to control the operation of the above components; the photoelectric sensor of the loading station, the photoelectric sensor of the unloading station, and the temperature and humidity sensors are respectively connected to the controller, and the controller is used to receive signals from the above components.

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