Atomization oil injection device for inner wall of composite paper can

Abstract

The utility model relates to an atomization oil injection device for the inner wall of a composite paper can. Comprising a flexible conveying belt, an oil spraying gun, a horizontal atomization oil spraying nozzle, a positioning clamp, a positioning detection sensor, an inlet counter, an inlet and outlet blocking air cylinder, an outlet composite paper can sensor, an anti-overflow cover, an anti-overflow cover lifting belt, an oil spraying gun mounting support, an oil spraying gun mounting base, an oil spraying gun mounting base up-down sliding rail and an oil spraying gun front-back left-right adjusting positioning screw. And the oil spraying gun fastening structure is composed of a PLC programmed control system and the like. The number of the composite paper cans entering the atomization oil spraying station can be counted and limited, and mistaken oil spraying at the station without the composite paper cans is prevented; and the anti-overflow cover can effectively protect the working environment. The device can perform atomization oil injection on the inner walls of N composite paper cans at the same time, has the advantages of reasonable equipment structure, high automation degree, simplicity in operation, accuracy in oil injection metering, uniformity in atomization oil injection, high production efficiency and the like, and is very suitable for being used on an automatic production line for atomization oil injection on the inner walls of the composite paper cans of packaging containers for fresh dough.

Description

Technical Field

[0001] This invention relates to a device for atomizing and spraying oil onto the inner wall of composite paper cans used for food packaging. It is particularly suitable for atomizing and spraying oil onto the inner wall of composite paper cans used for packaging fresh dough products, in order to eliminate and avoid the sticking phenomenon that occurs when fresh dough products are filled into composite paper cans on fully automated production lines. Background Technology

[0002] Many can packaging types widely used in the food manufacturing industry today face technical challenges in product filling. For example, products filled into three-piece tin cans are mostly liquids such as carbonated beverages, tea drinks, coconut milk, rice wine, and eight-treasure porridge, as well as powdered products like condiments and milk powder. Products filled into composite paper cans are mostly solids such as tea, nuts, and potato chips. Regardless of the type of product, there should be no adhesion between the filled product and the can body, preventing filling obstruction.

[0003] Freshly fermented dough products are neither fluids nor powders nor solids, but rather a viscoelastic material. The elasticity and stickiness of freshly fermented dough make it prone to deformation and adhesion to the composite paper can during production. Furthermore, when consumers remove the dough from the can for cooking, it easily sticks to their hands and cooking utensils.

[0004] In summary, the problem of preventing sticking during the filling and removal of fresh dough in viscoelastic form is a real issue that needs to be addressed in existing can packaging technologies. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and defects of existing can packaging technologies by proposing a device for atomizing and spraying oil onto the inner wall of composite paper cans. This atomizing and spraying device not only facilitates the filling of fresh dough during automated production but also facilitates the removal and cooking of fresh dough during consumption. This atomizing and spraying device has advantages such as reasonable equipment structure, high degree of automation, simple operation, accurate oil metering, uniform atomization and spraying, and high production efficiency, making it highly suitable for use on automated production lines for atomizing and spraying oil onto the inner wall of composite paper cans used as packaging containers for fresh dough.

[0006] The composite paper can inner wall atomizing oil spraying device of the present invention comprises a flexible conveyor belt, an oil spray gun, a horizontal atomizing oil spray nozzle, a positioning fixture, a positioning detection sensor, an inlet counter, an inlet blocking cylinder, an outlet composite paper can sensor, an outlet blocking cylinder, an anti-overflow cover, an anti-overflow cover lifting belt, an oil spray gun mounting bracket, an oil spray gun mounting base, upper and lower sliding rails of the oil spray gun mounting base, left and right adjustment positioning screws of the oil spray gun, front and rear adjustment positioning screws of the oil spray gun, an oil spray gun fastening plate, oil spray gun fastening screws, and a PLC programmable control system.

[0007] Based on the workflow of this device, the composition and specific functions of each component are explained as follows: A flexible conveyor belt sequentially and neatly delivers the composite paper cans to the front end of the atomizing spraying station. An inlet counter and an inlet blocking cylinder are located on the side of this position. Positioning fixtures are placed on both sides of the atomizing spraying station, and a positioning detection sensor is placed on one side of the atomizing spraying station. The PLC control system commands the inlet counter on one side of the flexible conveyor belt to count each composite paper can delivered into the atomizing spraying station. When the number of composite paper cans delivered to the atomizing spraying station reaches a preset number N (this device can simultaneously atomize and spray the inner walls of a group of N composite paper cans, where N is a natural number, N=1~15), the PLC control system commands the inlet blocking cylinder on one side of the flexible conveyor belt to prevent subsequent composite paper cans from entering the atomizing spraying station. At this time, the outlet blocking cylinder also simultaneously prevents the N composite paper cans that have entered the atomization spraying station and are waiting for atomization spraying from leaving the station; the PLC programmable control system instructs the positioning clamps set on both sides of the atomization spraying station to position and clamp the N composite paper cans that have entered the atomization spraying station during the atomization spraying process; the PLC programmable control system instructs the positioning detection sensors installed on the positioning clamps to detect whether there are missing composite paper cans at each clamping position. Once it is detected that one or more composite paper cans are missing at the composite paper can atomization spraying station, it will instruct to close the nozzle valve of the spray gun above the missing composite paper can station to avoid oil pollution to the production environment, production equipment, and the composite paper cans before and after that may be caused by continued spraying; all the spray guns in the device are mounted on the spray gun mounting base, and the spray gun mounting base drives the spray guns to move up and down synchronously along the upper and lower sliding rails of the spray gun mounting base so as to atomize and spray oil onto the inner wall of the composite paper cans.The device includes left-right and front-back adjusting screws on the spray gun mounting bracket, which allow for left-right and front-back adjustments to the spray guns to ensure that the axes of the spray guns are aligned as closely as possible with the axes of the composite paper cans. Below each spray gun is an overflow cover that covers the composite paper cans to prevent spillage of atomized oil during spraying and thus prevent oil contamination of the production environment. The spray guns descend into the composite paper cans through N pre-drilled nozzle holes on the overflow cover. A flexible lifting belt, in the form of a soft strap, is positioned around the overflow cover, with its upper part resting on the spray gun fastening plate. This allows the overflow cover to descend and rise along with the spray guns, with the lowest point of the overflow cover being the top of the composite paper can. At this point, the horizontal atomizing nozzle at the bottom of the fuel injector descends to the top position inside the composite paper can. The fuel injector is mounted on the fuel injector mounting base, which is placed in the sliding groove of the fuel injector mounting bracket. The PLC control system instructs the fuel injector mounting bracket to drive the fuel injectors to descend rapidly to the bottom of the composite paper can. When the horizontal atomizing nozzle is about 5-10 mm away from the bottom of the can, the fuel injector mounting bracket drives the fuel injectors to rise in the opposite direction. At the same time, the horizontal atomizing nozzle at the end of the fuel injector begins to horizontally atomize and spray fuel onto the inner wall of the composite paper can from bottom to top until the horizontal atomizing nozzle rises to 5-10 mm above the top of the composite paper can. The fuel injector then stops atomizing and spraying fuel. At this time, the overflow cover lifting strip on the overflow cover is exactly in a vertical state of its natural length. As the oil spray gun mounting bracket drives the oil spray guns to quickly return to their original positions and exit the composite paper cans, it also continuously raises the anti-overflow cap to the designated position, causing the anti-overflow cap to detach from the composite paper cans. The PLC control system instructs the positioning fixture to release its grip on the composite paper cans. Simultaneously, based on the sensing signal from the outlet composite paper can sensor located at the rear of the atomizing oil spraying station, the outlet blocking cylinder is activated to release a group of composite paper cans whose inner walls have undergone atomized oil spraying. These cans then move forward with the flexible conveyor belt and are delivered to the subsequent station. This completes the process of atomizing oil spraying onto the inner walls of this group of N composite paper cans. Next, the PLC control system instructs the next group of N composite paper cans to enter the atomizing oil spraying station, and the device begins to perform cyclical atomized oil spraying onto the inner walls of the composite paper cans.

[0008] The composite paper can inner wall atomizing oil spraying device described in this invention is particularly suitable for use on automated production lines for fresh dough, for atomizing oil spraying onto the inner walls of composite paper cans used for packaging fresh dough. It can simultaneously atomize oil spraying onto the inner walls of multiple composite paper cans. This device has advantages such as reasonable structure, simple operation, high degree of automation, accurate oil spraying metering, uniform atomization, and high production efficiency. Attached Figure Description

[0009] Figure 1: Schematic diagram of the main structure of the composite paper can inner wall atomizing oil spraying device of the present invention;

[0010] Figure 2 : Figure 1 Top view of a local structure in the middle AA section;

[0011] Figure 3a ): A diagram showing the position of the fuel injector when it is ready to atomize and inject fuel;

[0012] Figure 3b ): A diagram showing the position of the fuel injector when it begins to atomize and inject fuel;

[0013] Figure 3c ): A diagram showing the position of the fuel injector when it finishes atomizing fuel injection;

[0014] Figure 4 A partial schematic diagram of a horizontal atomizing fuel injector;

[0015] Figure 5 Partial schematic diagram of the fuel injector adjustment and positioning device and the anti-overflow cover.

[0016] In the diagram: 1. Injector gun, 2. Horizontal atomizing nozzle, 3. Composite paper can, 4. Positioning detection sensor, 5. Positioning fixture, 6. Inlet blocking cylinder, 7. Outlet blocking cylinder, 8. Inlet counter, 9. Outlet composite paper can sensor, 10. Flexible conveyor belt, 11. Overflow cover, 12. Overflow cover lifting belt, 13. Injector gun hole, 14. Injector gun mounting bracket, 15. Injector gun mounting base, 16. Upper and lower sliding rails of the injector gun mounting base, 17. Injector gun fastening plate, 18. Injector gun fastening screw, 19. Injector gun left and right adjustment positioning screw, 20. Injector gun front and rear adjustment positioning screw. Detailed Implementation

[0017] To describe the method and apparatus of the present invention more simply and clearly, the special case of N=5 is used in the text description and drawing in this embodiment. However, this does not affect the scope of protection of this patent. That is, in specific implementation, the case when N≠5 still falls within the scope of protection of this patent.

[0018] Figure 1 This is a schematic diagram of the main structure of the composite paper can inner wall atomizing oil spraying device of the present invention. The composite paper can inner wall atomizing oil spraying device includes: a flexible conveyor belt 10, a composite paper can 3, an oil spray gun 1, a horizontal atomizing oil spray nozzle 2, an anti-overflow cover 11, an anti-overflow cover lifting belt 12, a positioning clamp 5, a positioning detection sensor 4, an inlet blocking cylinder 6, an outlet blocking cylinder 7, an oil spray gun mounting bracket 14, an oil spray gun mounting base 15, an upper and lower sliding rail 16 of the oil spray gun mounting base, an oil spray gun left and right adjustment positioning screw 19, and an oil spray gun front and rear adjustment positioning screw 20, etc.

[0019] The workflow is as follows: When multiple composite paper cans 3 are sequentially delivered to the front end of the atomizing spraying station along with the flexible conveyor belt 10, the inlet counter 8 set on one side of the flexible conveyor belt 10 counts the number of composite paper cans 3 entering the atomizing spraying station. When the number of composite paper cans reaches the preset N=5, the PLC programmable control system instructs the inlet blocking cylinder 6 to prevent subsequent composite paper cans 3 from entering the atomizing spraying station. At the same time, the outlet blocking cylinder 7 prevents the five composite paper cans 3 that have entered the atomizing spraying station from leaving the atomizing spraying station. The PLC programmable control system instructs the positioning clamps 5 set on both sides of the flexible conveyor belt to position and clamp the five composite paper cans that have entered the atomizing spraying station. The PLC control system instructs a positioning detection sensor 4 located on one side of the flexible conveyor belt 10 to detect whether there are any missing composite paper cans 3 at the atomizing oil spraying station. If one or more composite paper cans 3 are detected as missing, the PLC control system immediately shuts off the corresponding nozzle valve to prevent accidental spraying by the horizontal atomizing nozzle 2 when a composite paper can 3 is missing, which could cause oil contamination of the production environment, equipment, and the preceding and following composite paper cans 3. A rectangular overflow cover 11 is installed above the five composite paper cans 3, with an overflow cover lifting belt 12 fixed to each of the four corners. During the atomizing oil spraying process of the oil spray gun 1, as the spray gun 1 descends, the overflow cover 11 can simultaneously cover all five composite paper cans 3. The nozzle is designed to reduce oil mist overflow from the composite paper can 3 during atomization spraying, thus preventing oil contamination of the production environment, equipment, and the front and rear composite paper cans 3. The spray gun 1 enters the composite paper can 3 through the spray gun hole 13 on the anti-overflow cover 11. The anti-overflow cover 11 is connected to the spray gun fastening plate 17 via four anti-overflow cover lifting belts 12, so that the anti-overflow cover 11 can be lifted simultaneously when the atomization spraying is finished and the spray gun 1 is lifted. At the rear end of the atomization spraying station, there is an outlet composite paper can sensor 9 and an outlet blocking cylinder 7. When the atomization spraying of the inner wall of a group of five composite paper cans 3 is completed, the PLC program control system commands the outlet blocking cylinder 7 at the rear end of the atomization spraying station to open, so that the composite paper cans 3 that have completed atomization spraying can continue to move forward along the flexible conveyor belt 10.

[0020] The oil spray gun mounting base 15 cooperates with the upper and lower sliding rails 16 on the oil spray gun mounting bracket 14, so that the five oil spray guns 1 placed on the oil spray gun mounting base 15 can move up and down at the same time; the PLC programmable control system commands control the movement mode of the oil spray guns 1, so as to realize the simultaneous atomized oil spraying on the inner wall of the five composite paper cans 3.

[0021] Figure 2 This is a top view of a partial structure of the atomizing oil spraying device AA on the inner wall of the composite paper can 3 described in this invention. Figure 2The positioning fixture 5 is displayed. The positioning fixture 5 located on both sides of the flexible conveyor belt 10 positions and clamps the composite paper can 3 from both sides. Five positioning detection sensors 4 are installed on the positioning fixture 5. The positioning detection sensors 4 detect whether there is a missing composite paper can 3 at this position. When one or more missing composite paper cans 3 are detected, the PLC program control system commands to automatically close the oil nozzle valve of the oil spray gun 1 at this position to prevent accidental spraying and oil contamination of the production environment, production equipment and the composite paper cans 3 before and after.

[0022] Figure 3a ), Figure 3b ), Figure 3c This diagram illustrates the different positions of the fuel spray gun 1 during the atomization and spraying process. (The diagram shows the positions of the fuel spray gun 1 during this process.)

[0023] Figure 3a This is a schematic diagram of the fuel injector 1 preparing for atomization and fuel spraying. At this time, five composite paper cans 3 awaiting atomization and fuel spraying enter the atomization and fuel spraying station, and the fuel injector 1 is about to enter the composite paper cans 3. The fuel injector mounting base 15 is located on the upper part of the fuel injector mounting bracket 14. The overflow cover 11 is connected to the fuel injector fastening plate 17 through four overflow cover lifting straps 12. At this time, the overflow cover lifting straps 12 are in a naturally stretched state. Each of the four corners of the overflow cover 11 is connected to an overflow cover lifting strap 12. One end of each overflow cover lifting strap 12 is fixed at a right angle position of the corresponding overflow cover 11, while the other end is connected to the fuel injector fastening plate 17. The fuel injector 1 is driven vertically downward by the fuel injector mounting base 15, preparing to enter the interior of the composite paper can 3. At the position shown in the diagram, the fuel injector 1 passes through the fuel injector hole 13 of the overflow cover 11, and the horizontal atomizing nozzle 2 is slightly lower than the horizontal height of the overflow cover 11.

[0024] Figure 3b This is a schematic diagram showing the position of the fuel injector 1 when it begins atomizing and spraying fuel. At this time, all five fuel injectors 1 are driven vertically downward by the fuel injector mounting base 15 and enter the interior of the composite paper can 3 until the horizontal atomizing nozzle 2 at the end of the fuel injector 1 is about 5-10 mm away from the bottom of the composite paper can 3. During the atomizing and spraying process, the overflow cover 11 continuously covers the upper port of the five composite paper cans 3. At this time, the overflow cover lifting belt 12 connecting the overflow cover 11 and the fuel injector fastening plate 17 is in a free and relaxed state. At the same time, the PLC programmable control system instructs the fuel injector 1 to begin to rise vertically in the opposite direction along with the fuel injector mounting base 15. The horizontal atomizing nozzle 2 at the end of the fuel injector 1 simultaneously begins to atomize and spray fuel onto the inner wall of the composite paper can from bottom to top. The total atomizing fuel dosage, stroke length, atomization degree, air pressure, and other technical indicators of the entire atomizing and spraying process can be precisely controlled by the PLC programmable control system.

[0025] Figure 3cThis is a schematic diagram showing the position of the fuel injector 1 when it finishes atomizing fuel spraying. Under the command of the PLC control system, the fuel injector 1, along with the fuel injector mounting base 15, begins to rise vertically, stopping atomizing fuel spraying when the horizontal atomizing nozzle 2 is approximately 5-10 mm from the top of the composite paper can 3. Throughout the entire atomizing fuel spraying process, the overflow cover 11 remains on top of the five composite paper cans 3 to prevent atomized fuel from overflowing and spreading to the outside of the composite paper cans 3.

[0026] Figure 1 and Figure 3a ), Figure 3b ), Figure 3c The overflow cover lifting strap 12 shown is made of flexible soft strap material. The overflow cover lifting strap 12 is fixed to the perimeter (four corners) of the overflow cover 11, and the other end of the overflow cover lifting strap 12 is mounted on the fuel injector fastening plate 17 (see...). Figure 5 When the fuel injector 1 descends to the top of the composite paper can, the anti-overflow cap 11 falls precisely onto the top of the composite paper can 3 to cover the opening of the composite paper can 3; as the fuel injector 1 continues to descend to the bottom of the composite paper can 3, the flexible anti-overflow cap lifting belt 12 will automatically bend without affecting the up and down movement of the fuel injector 1; after the atomized fuel spraying is completed, as the fuel injector mounting base 15 continues to rise vertically, the fuel injector 1 and the anti-overflow cap 11 will leave the contact with the composite paper can 3 until they reach the preset height position, so that the fuel injector 1 and the anti-overflow cap 11 completely release any possible contact or obstruction with the composite paper can 4. At this time, the PLC control system instructs the positioning fixture 5 to release the clamps on the five composite paper cans 3, and at the same time the outlet blocking cylinder 7 opens, allowing the five composite paper cans 3 that have completed atomization spraying to be delivered to the next station of the production line by the flexible conveyor belt; at the same time, the inlet blocking cylinder 6 opens, so that the previously blocked composite paper cans 3 can follow in one after another and enter the atomization spraying station to carry out the atomization spraying work repeatedly.

[0027] Figure 4 This is a partial schematic diagram of the horizontal atomizing fuel injector 2. This is a magnified view of the fuel injector 1 and the horizontal atomizing fuel injector 2. The arrows in the diagram indicate the direction of fuel atomization.

[0028] Figure 5This is a partial schematic diagram of the adjusting and positioning device of the fuel injector 1 and the anti-overflow cover 11. All fuel injectors 1 are mounted on fuel injector mounting bases 15, and are clamped and fixed by fuel injector fastening plates 17 and fuel injector fastening screws 18. The left-right and front-back positions of each fuel injector 1 can be adjusted individually by the left-right adjusting screws 19 and the front-back adjusting screws 20, so that the axis of each fuel injector 1 coincides with the axis of the corresponding composite paper can 3 as much as possible. This three-dimensional view could more vividly represent its structure, but it would be too complex to draw, so only three fuel injectors are shown in the figure. Furthermore, to avoid obscuring the structure, the fuel injector on the right side is not shown. Additionally, in... Figure 5 The diagram also illustrates the positional relationship between the overflow cover 11, the overflow cover lifting belt 12, and the fuel injector fastening plate 17.

[0029] The PLC control system described in this invention can be summarized as follows: It automatically controls the movement (i.e., the motion mode) of the fuel injector 1; automatically controls the opening and closing of the inlet blocking cylinder 6 and the outlet blocking cylinder 7; automatically controls the positioning detection sensor 4 to detect whether the composite paper can 3 is missing, and controls the opening and closing of the valve of the horizontal atomizing nozzle 2; automatically controls the start and end of the atomizing fuel injection of the fuel injector nozzle; and automatically controls the atomizing fuel dosage, the stroke length of the fuel injector 1, the degree of atomization, and the air pressure throughout the entire atomizing fuel injection process.

Claims

1. A composite paper can inner wall atomizing oil spraying device, comprising a flexible conveyor belt, an oil spray gun, a horizontal atomizing oil spray nozzle, a positioning fixture, a positioning detection sensor, an inlet counter, an inlet blocking cylinder, an outlet composite paper can sensor, an outlet blocking cylinder, an anti-overflow cover, an anti-overflow cover lifting belt, an oil spray gun mounting bracket, an oil spray gun mounting base, upper and lower sliding rails of the oil spray gun mounting base, left and right adjustment positioning screws for the oil spray gun, front and rear adjustment positioning screws for the oil spray gun, an oil spray gun fastening plate, oil spray gun fastening screws, and a PLC programmable control system; characterized in that... A flexible conveyor belt on the production line sequentially delivers composite paper cans to the front end of the atomizing oil spraying station, where an inlet counter and an inlet blocking cylinder are installed on the side. Positioning fixtures are placed on both sides of the atomizing oil spraying station, and a positioning detection sensor is placed on one side of the station. The oil spray gun is positioned above the sequentially delivered composite paper cans, awaiting atomization oil spraying onto their inner walls. An overflow preventer is installed above the composite paper cans to prevent atomized oil mist from overflowing, and the oil spray gun passes through a pre-drilled spray gun hole in the overflow preventer. The nozzle extends into the composite paper can to atomize and spray oil onto the inner wall. An overflow cover lifting belt is provided around the overflow cover, and the upper part of the overflow cover lifting belt is mounted on the oil spray gun fastening plate. At the rear end of the atomizing oil spray station, an outlet composite paper can sensor and an outlet blocking cylinder are provided. The oil spray gun is mounted on an oil spray gun mounting base, which is placed in a sliding groove of an oil spray gun mounting bracket. According to the instructions of the PLC programmable control system, the oil spray gun moves up and down, driving the oil spray gun to atomize and spray oil onto the inner wall of the composite paper can from bottom to top.

2. The composite paper can inner wall atomizing oil spraying device according to claim 1, characterized in that, The oil spray guns are configured in N units, where N is a natural number, and N = 1 to 15.

3. The composite paper can inner wall atomizing oil spraying device according to claim 1, characterized in that, The overflow cover lifting belt adopts a flexible soft belt structure.

4. The composite paper can inner wall atomizing oil spraying device according to claim 1, characterized in that, The PLC control system described above uses a programmable control system to: automatically control the movement of the fuel injector; automatically control the opening and closing of the inlet and outlet blocking cylinders; automatically control the positioning detection sensor to detect whether there is a missing composite paper can and open and close the fuel injector nozzle valve; automatically control the start and end of fuel injector nozzle atomization, and automatically control the total fuel injection dosage, stroke length, atomization degree, and air pressure throughout the entire atomization process.

5. The composite paper can inner wall atomizing oil spraying device according to claim 1, characterized in that, The oil spray gun sprays oil horizontally from the bottom of the composite paper can upwards in a horizontal direction.

6. The composite paper can inner wall atomizing oil spraying device according to claim 1, characterized in that, The oil spray guns are mounted on the oil spray gun mounting base and are adjusted and positioned left and right and forward and backward by adjusting the oil spray gun left and right positioning screws and the oil spray gun forward and backward positioning screws, so as to realize the coincidence of the axis of each oil spray gun with the axis of each composite paper can.

7. The composite paper can inner wall atomizing oil spraying device according to claim 5, characterized in that, The oil spray gun sprays oil horizontally from bottom to top in the composite paper can, meaning that the horizontal atomizing nozzle is located approximately 5-10 mm from the bottom of the can and 5-10 mm from the top of the composite paper can.

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