Method and device for automatically feeding wood pulp boards by a hydrapulper

Abstract

A method and device for automatically feeding wood pulp boards into a hydraulic pulper. In the process of feeding the pulp boards by an automatic feeding device, the automatic feeding device includes a frame, a lifting bracket and an electrical control system. The lifting bracket equipped with a chain conveyor is installed inside the frame, and the lifting bracket can automatically lift inside the frame. Two mounting beams are installed at the top of the frame, and a synchronous belt conveying device is installed between the two mounting beams. An air cylinder mounting seat and a push plate fork seat are installed on the synchronous belt. Multiple air cylinders are installed on the air cylinder mounting seat. The piston shaft of the air cylinder is connected with a vacuum suction cup. The air cylinder and the vacuum suction cup are respectively connected to a vacuum pipe with a high-pressure vortex blower through an air conveying control hose. A push plate fork is installed at the bottom of the push plate fork seat. A conveyor capable of conveying pulp boards to the chain conveyor is installed at the rear end of the frame. The electrical control system controls the operation of the automatic feeding device. This technology can quantitatively and automatically feed pulp boards into the hydraulic pulper.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying and feeding, and in particular to a method and device for automatically feeding wood pulp boards into a hydrapulper. Background Art

[0002] Wood pulp is a pulp made from wood as raw material, mainly used in the paper-making industry and also widely used in other industrial sectors. In recent years, disposable paper tableware has been promoted. As a raw material for paper tableware, the usage of wood pulp has increased significantly.

[0003] Wood pulp is supplied to the market in the form of cardboard. Several cardboard boards are packaged into one piece, and the size of the piece is about 850×800×400mm, and the weight is generally not more than 200 Kg, and each piece is tied with iron wire. When in use, it needs to be put into a hydrapulper and dissolved into a fluid with a concentration of about 0.5% and then enter the next process. Large enterprises have a large consumption of wood pulp and generally use high-power hydrapulpers to directly send the whole piece of pulp board into the hydrapulper for use. For small and medium-sized enterprises, or disposable paper tableware enterprises, the consumption of wood pulp is not large, and a hydrapulper with 5 m 3 less than that is used. The pulp boards need to be manually fed into the hydrapulper for dissolution one by one.

[0004] In the above-mentioned small and medium-sized enterprises, generally one employee is dedicated to dissolving the pulp board. The manual dissolution process is as follows: transport the pulp board to the side of the hydrapulper, manually cut the packaging iron wire, remove the upper packaging paper, open the water inlet valve of the hydrapulper until there is enough water, and then feed the pulp board into the hydrapulper one by one. Affected by the load capacity of the hydrapulper, the weight of each feeding is not more than 20Kg, and it takes about 10 minutes to dissolve one piece of pulp board. In addition to consuming labor, this manual feeding method also has problems such as relying on empirical operation, inaccurate and unstable dissolution concentration of wood pulp. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and device for automatically feeding wood pulp boards into a hydrapulper. The feeding method and device use an automatic feeding device to automatically and quantitatively feed the pulp boards into the hydrapulper according to an electrical control system, ensuring stable and accurate dissolution concentration of the pulp boards.

[0006] The adopted technical solution is as follows:

[0007] A method for automatically feeding wood pulp boards into a hydrapulper, and the steps of automatic feeding are as follows:

[0008] a. Send the whole piece of pulp board onto the conveyor of the automatic feeding device, cut the binding iron wire and then start the equipment;

[0009] b. Horizontally transport the pulp board through the conveyor into the chain conveyor on the lifting bracket of the automatic feeding device;

[0010] c. The chain conveyor continues to horizontally convey the pulp board to the central position of the lifting bracket, and then stops the horizontal conveyance.

[0011] d. The lifting motor operates to drive the screw rod to rotate, raising the lifting bracket to the pusher position of the machine frame. Then the lifting motor stops working and the lifting bracket stops moving vertically.

[0012] e. During the time when the vertical movement stops, the high-pressure vortex blower starts to generate vacuum. The piston shaft of the pneumatic cylinder extends, driving the vacuum suction cup to descend and contact the upper wrapping paper on the pulp board, sucking the upper wrapping paper on the pulp board and rising to the designated position. At the same time, the lifting bracket descends, and the synchronous belt conveying device operates. The synchronous belt moves horizontally along the machine frame to above the hydro pulper. Subsequently, the high-pressure vortex blower stops running and the vacuum disappears. The upper wrapping paper falls into the hydro pulper under the action of gravity, and the vacuum suction cup returns to the origin.

[0013] f. After the vacuum suction cup returns to the origin, the piston shafts of the cylinders on both sides of the lifting bracket extend, pushing the swing frame to drive the suction cup to move, sucking the lower wrapping paper on the pulp board from the side. Then the piston shafts of the cylinders contract, pulling the lower wrapping paper out a certain distance. At this time, the piston shaft of the lower pressing cylinder extends to press the lower wrapping paper.

[0014] g. The lifting motor works again. The screw rod rotates and the lifting bracket rises 50 mm higher than before. The synchronous belt conveying device operates, driving the push plate fork installed on the push plate fork seat to move horizontally along the machine frame, pushing out 50 mm of the pulp board from the machine frame, and entering the hydro pulper under the guiding action of the guiding roller.

[0015] h. Repeat the operation of "lifting bracket rising - push plate fork running" in sequence until the thickness of the pulp board remains 50 mm. At this time, the chain conveyor starts, and the remaining pulp board together with the lower wrapping paper is sent into the hydro pulper, completing the automatic feeding of the whole pulp board.

[0016] The automatic feeding device described above includes a frame, and also includes a lifting bracket and an electrical control system. The frame is welded or bolted together by square steel pipes or steel plates. On the two inner sides of the frame, two or more screw rods are installed respectively. The upper and lower ends of the screw rods are connected to the frame through pedestal bearings. A chain conveyor is installed on the lifting bracket. The lifting bracket is installed between the screw rods on the two inner sides of the frame. At the positions corresponding to the screw rods on both sides of the lifting bracket, nuts are fixedly installed, and the nuts are connected to the screw rods. At the bottom of each screw rod, a lifting motor is installed through a gearbox. On both sides of the lifting bracket, two vacuum suction cups and a pneumatic cylinder are installed respectively; on the top of the frame, two parallel installation beams are installed. The two installation beams extend forward from the front end of the frame. A synchronous belt conveyor device is installed along the length direction between the two installation beams. An air cylinder mounting seat is fixedly installed on the synchronous belt of the synchronous belt conveyor device. A plurality of downward-extending pneumatic cylinders are installed on the air cylinder mounting seat. The piston shaft of the pneumatic cylinder is installed with an air suction pipe with a vacuum suction cup through a connecting seat. The vacuum suction cup can move up and down under the control of the pneumatic cylinder. The pneumatic cylinder and the air suction pipe are respectively connected to the vacuum pipe through an air supply control hose. A high-pressure vortex blower is installed on the vacuum pipe. The high-pressure vortex blower provides vacuum suction for the vacuum suction cup; a push plate fork seat is fixedly installed on the synchronous belt behind the air cylinder mounting seat. A downward-extending push plate fork is installed at the bottom of the push plate fork seat; a conveyor for conveying paddle boards to the chain conveyor is installed at the rear end of the frame; the electrical control system is respectively connected to the conveyor, the synchronous belt conveyor device, the pneumatic cylinder, the chain conveyor, the lifting motor and the high-pressure vortex blower to control the operation of the conveyor, the synchronous belt conveyor device, the pneumatic cylinder, the chain conveyor, the lifting motor and the high-pressure vortex blower. Infrared sensors and travel switches can be set on the frame as needed. The infrared sensor is set to ensure that when the paddle board is conveyed to the middle of the lifting bracket, the operation of the chain conveyor stops. The setting of the travel switch prevents the lifting bracket from lifting and lowering beyond the stroke. On both sides of the lifting bracket, a swinging bracket extending outward is hinged respectively. A suction cup for sucking the lower wrapping paper of the paddle board is installed on the swinging bracket. A cylinder is installed at the lower part of the swinging bracket. The cylinder block of the cylinder is hinged to the lifting bracket, and the piston shaft of the cylinder is hinged to the lower part of the swinging bracket; on both sides of the lifting bracket, an upward-extending downward pressure cylinder frame is also provided. An inverted downward pressure cylinder is installed on the downward pressure cylinder frame. The cylinder block of the downward pressure cylinder is connected to the downward pressure cylinder frame. The piston shaft of the downward pressure cylinder extends downward and is installed with a pressing plate. The cylinder, the suction cup and the downward pressure cylinder are all connected to the vacuum pipe through an air pipe, and the high-pressure vortex blower provides air pressure for them. The cylinder controls the swinging of the swinging bracket up and down, which is used to drive the suction cup to adsorb the lower wrapping paper and pull it down. The downward pressure cylinder controls the pressing plate to press down the lower wrapping paper.

[0017] Further preferably: A guiding roller is provided at the front end of the frame and extends forward to pour the paddle board into the hydraulic pulper; the setting of the guiding roller can ensure that the paddle board can be put into the hydraulic pulper each time.

[0018] Further preferably, a slide rail is respectively arranged on each of the two mounting beams, and a sliding limiting mechanism capable of sliding on the slide rail and preventing the air cylinder mounting seat from shaking is respectively mounted on both sides of the air cylinder mounting seat. The sliding limiting mechanism can adopt a pair of pulleys mounted on a mounting plate, the slide rail is located between the pair of pulleys, and the mounting plate is connected to the air cylinder mounting seat, which can ensure that the air cylinder and the vacuum suction cup can move smoothly and reciprocally along the horizontal direction following the synchronous belt.

[0019] Further preferably, a slide rail is respectively arranged on each of the two mounting beams, and a sliding limiting mechanism capable of sliding on the slide rail and preventing the push plate fork seat from shaking is respectively mounted on both sides of the push plate fork seat. The sliding limiting mechanism can adopt a pair of pulleys mounted on a mounting plate, the slide rail is located between the pair of pulleys, and the mounting plate is connected to the push plate fork seat, which can ensure that the push plate fork can move smoothly and reciprocally along the horizontal direction following the synchronous belt.

[0020] Further preferably, the conveyor for conveying the paddle boards for the chain conveyor is a chain conveyor, which is installed at the rear end of the frame.

[0021] The method for automatically feeding wood pulp boards of this hydraulic pulper uses an electrical control system to control the operation of the conveyor, the synchronous belt conveying device, the air cylinder, the chain conveyor, the lifting motor, the high-pressure vortex blower, the air cylinder, and the pressing air cylinder according to the set program, and automatically feeds the paddle boards into the hydraulic pulper in a quantitative manner. While reducing the labor intensity, it ensures the quantitative feeding of the paddle boards, thereby ensuring the stable and accurate concentration of the pulp board dissolution and laying a good foundation for the next process. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the method for automatically feeding wood pulp boards of this hydraulic pulper;

[0023] Figure 2 is Figure 1 a top view schematic diagram of;

[0024] Figure 3 is Figure 1 a right view schematic diagram of;

[0025] The names corresponding to the serial numbers in the figure are:

[0026] 1. Conveyor; 2. Frame; 3. Synchronous belt conveying device; 4. Synchronous belt; 5. Pillow block bearing; 6. Pusher fork; 7. Pusher fork seat; 8. Air supply control hose; 9. Pneumatic cylinder mounting seat; 10. Sliding limit mechanism; 11. Slide rail; 12. Mounting beam; 13. Pneumatic cylinder; 14. Connecting seat; 15. Suction pipe; 16. Vacuum suction cup; 17. Guide roller; 18. Chain conveyor; 19. Nut; 20. Lifting bracket; 21. Gearbox; 22. Lifting motor; 23. Vacuum pipe; 24. High-pressure vortex blower; 25. Screw; 26. Electrical control system; 27. Cylinder; 28. Suction cup; 29. Swing frame; 30. Lower pressing pneumatic cylinder frame; 31. Pressing plate; 32. Lower pressing pneumatic cylinder. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] The following steps can be used to automatically feed the whole paddle board into the hydraulic pulper:

[0030] a. Send the whole paddle board onto the conveyor of the automatic feeding device, cut the binding wire, and then start the equipment.

[0031] b. Horizontally convey the paddle board through the conveyor onto the chain conveyor on the lifting bracket of the automatic feeding device.

[0032] c. The chain conveyor continues to horizontally convey the paddle board to the central position of the lifting bracket, and then stops the horizontal conveyance.

[0033] d. The lifting motor works to drive the screw to rotate, raise the lifting bracket to the pusher position of the frame, then the lifting motor stops working and the lifting bracket stops moving vertically.

[0034] e. During the time when the vertical movement stops, the high-pressure vortex blower starts to generate vacuum, the piston shaft of the pneumatic cylinder extends, driving the vacuum suction cup to descend and contact the wrapping paper on the paddle board, sucking the wrapping paper on the paddle board and rising to the designated position. At the same time, the lifting bracket descends, the synchronous belt conveying device works, and the synchronous belt moves horizontally along the frame to above the hydraulic pulper. Subsequently, the high-pressure vortex blower stops running and the vacuum disappears, and the upper wrapping paper falls into the hydraulic pulper under the action of gravity, and the vacuum suction cup returns to the origin.

[0035] f. After the vacuum suction cup returns to the origin, the piston shafts of the cylinders on both sides of the lifting bracket extend, pushing the swing bracket to drive the suction cup to move, sucking the lower wrapping paper of the sizing board on the side. Then, the piston shafts of the cylinders contract, pulling out the lower wrapping paper by a certain distance. At this time, the piston shaft of the pressing cylinder extends to press the lower wrapping paper.

[0036] g. The lifting motor works again, the screw rotates, and the lifting bracket rises 50 mm higher than before. The synchronous belt conveying device works, driving the push plate fork installed on the push plate fork seat to move horizontally along the frame, pushing out the 50-mm sizing board from the frame, and entering the hydro-pulper under the guiding action of the guiding roller.

[0037] h. Run back and forth multiple times according to the program of "lifting bracket rising - push plate fork running" until the thickness of the sizing board remains 50 mm. At this time, the chain conveyor starts, and the remaining sizing board together with the lower wrapping paper is sent into the hydro-pulper, completing the automatic feeding of the whole sizing board.

[0038] The automatic feeding device includes a frame 2, and also includes a lifting bracket 20 and an electrical control system 26. Two or more screws 25 are respectively installed on the two inner sides of the frame 2. The upper and lower ends of the screws 25 are respectively connected to the frame 2 through pedestal bearings 5. A chain conveyor 18 is installed on the lifting bracket 20. The lifting bracket 20 is installed between the screws 25 on the two inner sides of the frame 2. Nuts 19 are fixedly arranged at the positions corresponding to the screws 25 on both sides of the lifting bracket 20. The nuts 19 are threadedly connected to the screws 25. The bottom of each screw 25 is installed with a lifting motor 22 through a gearbox 21; two parallel mounting beams 12 are installed at the top of the frame 2. The two mounting beams 12 extend towards the front end of the frame 2. A synchronous belt conveying device 3 is installed along the length direction between the two mounting beams 12. An air cylinder mounting seat 9 is fixedly installed on the synchronous belt 4 of the synchronous belt conveying device 3. A plurality of downward-extending air cylinders 13 are installed on the air cylinder mounting seat 9. The piston shaft of the air cylinder 13 is installed with an air suction pipe 15 with a vacuum suction cup 16 through a connecting seat 14. The air cylinders 13 and the air suction pipes 15 are respectively connected to a vacuum pipe 23 through air supply control hoses 8. A high-pressure vortex blower 24 is installed on the vacuum pipe 23; a push plate fork seat 7 is fixedly installed on the synchronous belt 4 behind the air cylinder mounting seat 9. A downward-extending push plate fork 6 is installed at the bottom of the push plate fork seat 7; a conveyor 1 capable of conveying the sizing board for the chain conveyor 18 is installed at the rear end of the frame 2; the electrical control system 26 is respectively connected to the conveyor 1, the synchronous belt conveying device 3, the air cylinders 13, the chain conveyor 18, the lifting motor 22 and the high-pressure vortex blower 24 to control the operation of the conveyor 1, the synchronous belt conveying device 3, the air cylinders 13, the chain conveyor 18, the lifting motor 22 and the high-pressure vortex blower 24.

[0039] A guiding roller 17 is provided at the front end of the described rack 2 and extends forward to pour the paddle board into the hydraulic pulper.

[0040] A slide rail 11 is respectively provided on each of the two mounting beams 12, and a sliding limiting mechanism 10 that can slide on the slide rail 11 and prevent the pneumatic cylinder mounting seat 9 from shaking is respectively installed on both sides of the pneumatic cylinder mounting seat 9. A sliding limiting mechanism 10 that can slide on the slide rail 11 and prevent the push plate fork seat 7 from shaking is also respectively installed on both sides of the push plate fork seat 7.

[0041] A swinging frame 29 extending outwards is respectively hinged on both sides of the described lifting bracket 20. A suction cup 28 for sucking the lower wrapping paper of the paddle board is installed on the swinging frame 29. A cylinder 27 is installed at the lower part of the swinging frame 29. The cylinder seat of the cylinder 27 is hinged to the lifting bracket 20, and the piston rod of the cylinder 27 is hinged to the lower part of the swinging frame 29. An upward-extending downward pressure cylinder frame 30 is also provided on both sides of the lifting bracket 20. A downward pressure cylinder 32 is installed upside down on the downward pressure cylinder frame 30. The cylinder seat of the downward pressure cylinder 32 is connected to the downward pressure cylinder frame 30, and the piston rod of the downward pressure cylinder 32 extends downward and is provided with a pressing plate 31. The cylinder 27, the suction cup 28, and the downward pressure cylinder 32 are all connected to the vacuum tube 23 through an air pipe, and a high-pressure vortex blower 24 provides air pressure for them.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for automatically feeding wood pulp boards into a hydrapulper, characterized in that: The steps of automatic feeding are as follows: a. Send the whole piece of pulp board onto the conveyor of the automatic feeding device, cut the binding wire, and then start the equipment; b. Horizontally convey the pulp board through the conveyor into the chain conveyor on the lifting bracket of the automatic feeding device; on both sides of the lifting bracket, there is respectively hinged an outward-extending swing frame (29), and on the swing frame (29), there is installed a suction cup (28) capable of sucking the lower wrapping paper of the pulp board. At the lower part of the swing frame (29), there is installed a cylinder (27), the cylinder block of the cylinder (27) is hinged with the lifting bracket, and the piston rod of the cylinder (27) is hinged with the lower part of the swing frame (29); on both sides of the lifting bracket, there is also provided an upward-extending downward pressure cylinder frame (30), and on the downward pressure cylinder frame (30), there is an inverted downward pressure cylinder (32) installed. The cylinder block of the downward pressure cylinder (32) is connected with the downward pressure cylinder frame (30), and the piston rod of the downward pressure cylinder (32) extends downward and is installed with a pressing plate (31); c. The chain conveyor continues to horizontally convey the pulp board to the central position of the lifting bracket, and the chain conveyor stops horizontal conveyance; d. The lifting motor works, drives the screw rod to rotate, raises the lifting bracket, reaches the pushing position of the machine frame, the lifting motor stops working, and the lifting bracket stops vertical movement; e. During the time of stopping vertical movement, the high-pressure vortex blower starts to generate vacuum, the piston rod of the air cylinder extends, drives the vacuum suction cup to descend, contacts the upper wrapping paper of the pulp board, sucks the upper wrapping paper of the pulp board, and rises to the designated position. At the same time, the lifting bracket descends, the synchronous belt conveying device works, the synchronous belt moves horizontally along the machine frame to above the hydraulic pulper, then the high-pressure vortex blower stops running and the vacuum disappears, the upper wrapping paper falls into the hydraulic pulper under the action of gravity, and the vacuum suction cup returns to the origin; f. After the vacuum suction cup returns to the origin, the piston rods of the cylinders on both sides of the lifting bracket extend, push the swing frame to drive the suction cup to move, suck the lower wrapping paper of the pulp board on the side, then the piston rods of the cylinders contract, pull out the lower wrapping paper a certain distance, and at this time the piston rod of the downward pressure cylinder extends to press the lower wrapping paper; g. The lifting motor works again, the screw rod rotates, and the lifting bracket rises 50 mm higher than before. The synchronous belt conveying device works, drives the push plate fork installed on the push plate fork seat to move horizontally along the machine frame, and pushes out 50 mm of pulp board from the machine frame. Under the guiding action of the guiding roller, it enters the hydraulic pulper; h. Repeatedly run according to the program of "lifting bracket rising - push plate fork running" until the thickness of the pulp board remains 50 mm. At this time, the chain conveyor starts, and the remaining pulp board together with the lower wrapping paper is sent into the hydraulic pulper to complete the automatic feeding of the whole piece of pulp board.

2. The method for automatically feeding wood pulp boards into a hydrapulper according to claim 1, characterized in that: The described automatic feeding device includes a frame (2), characterized in that: it further includes a lifting bracket (20) and an electrical control system (26). On the inner sides of the two sides of the frame (2), two or more screws (25) are respectively installed. The upper and lower ends of the screws (25) are respectively connected to the frame (2) through pedestal bearings (5). A chain conveyor (18) is installed on the lifting bracket (20). The lifting bracket (20) is installed between the screws (25) on the inner sides of the two sides of the frame (2). Nuts (19) are fixedly arranged at the positions corresponding to the screws (25) on both sides of the lifting bracket (20). The nuts (19) are threadedly connected to the screws (25). A lifting motor (22) is installed at the bottom of each screw (25) through a gearbox (21); Two parallel mounting beams (12) are installed at the top of the frame (2). A synchronous belt conveyor device (3) is installed between the two mounting beams (12) along the length direction. An air cylinder mounting seat (9) is fixedly installed on the synchronous belt (4) of the synchronous belt conveyor device (3). A plurality of downward-extending air cylinders (13) are installed on the air cylinder mounting seat (9). The piston shaft of the air cylinder (13) is installed with an air suction pipe (15) with a vacuum suction cup (16) through a connecting seat (14). The air cylinder (13) and the air suction pipe (15) are respectively connected to a vacuum pipe (23) through an air supply control hose (8). A high-pressure vortex blower (24) is installed on the vacuum pipe (23); A push plate fork seat (7) is fixedly installed on the synchronous belt (4) behind the air cylinder mounting seat (9). A downward-extending push plate fork (6) is installed at the bottom of the push plate fork seat (7); A conveyor (1) capable of conveying paddle boards to the chain conveyor (18) is installed at the rear end of the frame (2); The electrical control system (26) is respectively connected to the conveyor (1), the synchronous belt conveyor device (3), the air cylinder (13), the chain conveyor (18), the lifting motor (22) and the high-pressure vortex blower (24) to control the operation of the conveyor (1), the synchronous belt conveyor device (3), the air cylinder (13), the chain conveyor (18), the lifting motor (22) and the high-pressure vortex blower (24).

3. The method for automatically feeding wood pulp boards into a hydrapulper according to claim 2, characterized in that: A guiding roller (17) extending forward is arranged at the front end of the frame (2) and can pour the paddle board into the hydraulic pulper.

4. The method for automatically feeding wood pulp boards into a hydrapulper according to claim 2, characterized in that: A slide rail (11) is respectively arranged on each of the two mounting beams (12). A sliding limit mechanism (10) capable of sliding on the slide rail (11) and preventing the air cylinder mounting seat (9) from shaking is respectively installed on both sides of the air cylinder mounting seat (9).

5. The method for automatically feeding wood pulp boards into a hydrapulper according to claim 2, characterized in that: A slide rail (11) is respectively arranged on each of the two mounting beams (12). A sliding limit mechanism (10) capable of sliding on the slide rail (11) and preventing the push plate fork seat (7) from shaking is respectively installed on both sides of the push plate fork seat (7).

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