A feeding device for edible canned oil production

Abstract

The application discloses a feeding device for edible barrel oil production and relates to the technical field of feeding devices. A pulse exciting vibration assembly and a barrel stirring wheel share the same driving source, the speed of barrel stirring is faster, the self-adaptive matching of the material sorting vibration frequency is higher, the high-frequency low-amplitude knocking effectively eliminates the static electricity and friction between plastic barrel bodies, prevents the blockage of empty oil barrels in a slide, guarantees the absolute continuity of front-end feeding, through the combination of a star-shaped stirring wheel and a circular arc limiting baffle, single-column interception with zero extrusion of light and thin plastic bottle bodies is realized, and the risk that a traditional cylinder blocking mechanism easily pinches or scratches the label of a bottle body is avoided. The feeding device effectively improves the yield rate of the feeding on a production line, improves the automation work efficiency and practicality of the whole edible oil filling line.

Description

Technical Field

[0001] This invention relates to the field of feeding device technology, and specifically to a feeding device for the production of bottled edible oil. Background Technology

[0002] In the front-end feeding stage of the edible oil filling production line, it is necessary to continuously and without damage transport the destacking 5L lightweight plastic empty oil drums to the filling station at a speed of 60-120 drums / minute. For this type of feeding requirement, the solution of using inclined slide gravity conveyor, combined with interception mechanism for single-row feeding, and falling onto the high-speed main conveyor belt is a feasible technical path commonly used in the industry.

[0003] Given that such feeding devices require adaptive vibration frequency matching with production speed, non-damaging barrel compression during interception, and anti-tipping features during barrel dropping, existing rigid interception and passive barrel-blocking solutions cannot meet the needs of high-speed filling lines. Based on this requirement, this solution proposes an empty oil barrel feeding device with a controlled-position barrel release mechanism. Through a structural design that combines synchronous vibration material handling, arc-shaped limiting interception, and visual airflow-coordinated barrel dropping, it achieves continuous, damage-free, and anti-tipping feeding of lightweight empty oil barrels, adapting to the production requirements of high-speed filling lines. Summary of the Invention

[0004] The purpose of this invention is to provide a feeding device for the production of bottled edible oil, so as to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a feeding device for the production of bottled edible oil, comprising a device body, wherein a frame, a feeding guide rail, and a main conveyor belt are arranged inside the device body;

[0006] It also includes a control and release mechanism, which includes a drum-turning wheel assembly, a pulse excitation assembly, and an arc-shaped limit release assembly;

[0007] The servo motor of the control and release mechanism is fixed to the side wall of the frame, the main drive shaft is horizontally spanning the discharge end of the feed guide, and the star-shaped dial is fixed to the middle of the main drive shaft.

[0008] The active gear of the pulse excitation assembly is coaxially fixed to one end of the main drive shaft, so that the power of the servo motor can be synchronously distributed to the barrel-pulling action and the excitation action. The driven gear ring is installed on the outside of the side wall of the feed guide rail. The cam ring is coaxially fixedly connected to the driven gear ring. The striking rod passes through the side plate of the feed guide rail laterally, and one end of the striking rod is facing the wall of the empty oil barrel in the inner cavity of the feed guide rail. The force plate fixed at the other end extends into the movement trajectory of the cam ring. The return spring is sleeved on the outside of the striking rod, so that it tends to stay away from the inner cavity of the feed guide rail under normal conditions.

[0009] The arc-shaped limiting baffle of the arc-shaped limiting release component is fixed to the frame and covers the bottom of the star-shaped dial, with an annular gap between them to accommodate a single empty oil drum.

[0010] The visual airflow coordination component is used to identify the falling posture of empty oil drums and adaptively adjust the downward airflow to prevent the drums from tipping over.

[0011] Preferably, the operation of the feeding device includes the following steps:

[0012] Empty oil drums are pushed into the inclined feeding guide in batches. The servo motor starts and drives the main drive shaft and star-shaped dial to rotate. The drive gear on the main drive shaft drives the driven gear ring and cam ring to rotate synchronously.

[0013] When the cam ring rotates, the triangular protrusions evenly distributed on its surface abut against the force plate of the striking rod in sequence, pushing the striking rod to advance into the inside of the feed guide rail and strike the body of the empty oil drum. When the triangular protrusions pass the force plate, the return spring releases its elastic force, causing the striking rod to retract.

[0014] Repeat the above steps to convert the rotational motion of the servo motor into pulse vibration of the feed guide rail, thereby breaking the electrostatic adsorption and mechanical jamming between the empty oil drums and making the empty oil drums fluidized.

[0015] Empty oil drums slide down to the end of the feeding guide rail and are sequentially inserted into the arc-shaped slots on the outer edge of the star-shaped dial wheel. The rotation of the star-shaped dial wheel brings the empty oil drums into the annular gap formed by the star-shaped dial wheel and the arc-shaped limiting baffle. Subsequent empty oil drums are blocked above the star-shaped dial wheel, achieving single-row isolation.

[0016] Preferably, the position control and release mechanism includes a visual airflow coordination component, which includes:

[0017] A vision camera captures transient images of the empty oil drum during its descent. An air nozzle sprays variable-pressure airflow. The vision camera is fixed in place by a bracket. An electronic proportional control valve is installed on the air supply line of the air nozzle, adjusting the output gas pressure according to an electrical signal. A conveyor belt speed encoder is installed on the drive roller of the main conveyor belt to monitor the linear speed of the conveyor belt in real time. A temperature and humidity sensor is installed at the drum opening to collect the air humidity of the working environment. The central controller includes a microprocessor and I / O interfaces.

[0018] Preferably, the optimized visual airflow coordination component includes:

[0019] The visual camera is tilted and fixed above the frame by a bracket, with the lens aimed at the airspace where the bucket opening at the end of the arc-shaped limiting baffle meets the main conveyor belt.

[0020] The air nozzle is vertically fixed directly above the opening of the drop bucket. Its air inlet is connected to the air outlet of the electronic proportional regulating valve through an air pipe. The electronic proportional regulating valve is fixed on the side of the frame. Its air inlet is connected to the main air source of the workshop. The conveyor belt speed encoder is coaxially installed at the end of the driven or driven roller of the main conveyor belt. The temperature and humidity sensor is fixed to the outer wall of the arc-shaped limit baffle with bolts. The probe faces the open air circulation area.

[0021] The central controller is installed in the electrical control box on the side of the rack and is electrically connected to the vision camera, electronic proportional control valve, conveyor belt speed encoder and temperature and humidity sensor via shielded cables.

[0022] Preferably, the central controller integrates multiple modules, including a data acquisition module, a visual feature extraction module, a measurement module, and an adaptive barometric pressure decision-making module.

[0023] The acquisition module receives pulse signals and voltage signals from the conveyor belt speed encoder and temperature and humidity sensor, analyzes them into the conveyor belt speed fluctuation deviation rate and the ambient relative humidity, and sends them to the calculation module through the internal shared memory.

[0024] The visual camera sends the video stream to the visual feature extraction module;

[0025] After processing by the visual feature extraction module, the falling angle of the central axis of the empty oil drum is extracted and sent to the measurement module.

[0026] The measurement module receives the conveyor belt speed fluctuation deviation rate, ambient relative humidity, and drop angle. After completing matrix operations and weighted calculations, it generates a tipping risk index and sends it to the adaptive air pressure decision module via an event trigger.

[0027] The adaptive pressure decision module receives the overturning risk index, substitutes it into the compensation control algorithm to calculate the target pressure value, converts it into an analog voltage signal, and sends it to the drive circuit of the electronic proportional control valve through the controller's D / A output channel.

[0028] Preferably, the operation of the visual airflow coordination component includes the following steps:

[0029] After the feeding device is started, the central controller outputs voltage to the electronic proportional regulating valve to maintain the basic set air pressure. ;

[0030] During operation, the conveyor belt speed encoder and temperature and humidity sensor continuously monitor external disturbances, the vision camera locks onto each empty oil drum that is about to leave the barrel opening, and the hardware sensors gather electrical signals to the central controller.

[0031] The central controller extracts the current speed fluctuation deviation rate, ambient relative humidity, and the falling angle of the bucket, and calculates the current tipping risk index by fusion. ;

[0032] If the risk index is overturned Greater than the exponential threshold The adaptive pressure decision module calculates the target pressure that the electronic proportional control valve needs to output. The central controller increases the analog voltage output to the electronic proportional control valve;

[0033] The electronic proportional control valve opens with a larger proportion, and the air nozzle sprays a larger downward airflow that acts on the shoulder of the empty oil drum. The pneumatic downward pressure counteracts the overturning moment, allowing it to land stably on the main conveyor belt.

[0034] Once the risk tank has transitioned smoothly, if the tipping risk index falls below the threshold, the electronic proportional control valve will automatically adjust back to the baseline air pressure. .

[0035] Preferably, the adaptive pressure decision module receives the rollover risk index, substitutes it into the compensation control algorithm to calculate the target pressure value, and the expression is: ,in The target air pressure that the electronic proportional control valve needs to output. This is the pressure compensation gain coefficient, in MPa. To assess the risk of overturning, For the exponential threshold, This is a penalty item for exceeding the limit.

[0036] Preferably, the position control and release mechanism also includes a visual airflow coordination component;

[0037] The visual airflow coordination component includes a visual camera mounted on top of the drop bucket opening and an air nozzle fixed to the end of the arc-shaped limiting baffle. The visual camera is fixed to the top of the frame by a bracket.

[0038] Preferably, when the star-shaped dial rotates the empty oil drum to the bottom drop opening, the empty oil drum loses the support of the arc-shaped limiting baffle and falls vertically downwards towards the main conveyor belt under the action of gravity.

[0039] Preferably, the visual camera captures the transient characteristics of the falling empty oil drum, and when it is detected that the bottom of the empty oil drum is about to contact the main conveyor belt, the air nozzle sprays a downward airflow along the central axis of the empty oil drum.

[0040] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0041] 1. The pulse excitation component of this application shares the same drive source with the drum turning wheel, realizing adaptive matching that the faster the drum turning speed, the higher the material handling vibration frequency. The high-frequency low-amplitude knocking effectively eliminates static electricity and friction between plastic drums, prevents empty oil drums from blocking in the slide, and ensures the absolute continuity of front-end material supply.

[0042] 2. This application achieves zero-compression single-row interception of thin plastic bottles by combining a star-shaped dial and an arc-shaped limiting baffle, avoiding the risk that traditional cylinder blocking mechanisms may easily crush empty bottles or scratch bottle labels.

[0043] 3. When a lightweight 5L empty oil drum falls onto a high-speed main conveyor belt, it is prone to tipping over due to the torque generated by the horizontal tension of the conveyor belt and the inertia of the oil drum itself. This application applies an invisible pressure of vertically downward airflow to the oil drum the instant it touches the conveyor belt. This brief downward pressure instantly increases the friction at the bottom of the oil drum, counteracting the tipping torque, so that the extremely unstable empty oil drum can stand firmly on the high-speed conveyor belt, effectively improving the yield rate of the production line and enhancing the automation efficiency and practicality of the entire edible oil filling line. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0045] Figure 1 This is a schematic diagram of the overall structure of the feeding device of the present invention.

[0046] Figure 2 This is a schematic diagram of the structure of the position control and release mechanism of the present invention.

[0047] Figure 3 This is a flowchart of the visual airflow coordination component of the present invention.

[0048] Figure 4 This is a graph showing the relationship between the overturning risk index and the air pressure compensation response of this invention.

[0049] In the diagram: 100 - device body, 110 - frame, 120 - feed guide rail, 130 - main conveyor belt;

[0050] 200-Controlled release mechanism;

[0051] 210-Drum wheel assembly, 2101-Servo motor, 2102-Main drive shaft, 2103-Star-shaped dial wheel, 2104-Arc-shaped slot;

[0052] 220-Pulse excitation assembly, 2201-Driving gear, 2202-Driven gear ring, 2203-Cam ring, 2204-Triangular protrusion, 2205-Impact rod, 2206-Force receiving plate, 2207-Return spring;

[0053] 230-Arc-surface limiting release component, 2301-Circular arc limiting baffle, 2302-Drop bucket opening;

[0054] 240-Visual airflow coordination component, 2401-Visual camera, 2402-Air nozzle, 2403-Bracket, 2404-Electronic proportional control valve, 2405-Conveyor belt speed encoder, 2406-Temperature and humidity sensor, 2407-Central controller. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Example 1: This example provides a feeding device for the production of bottled edible oil. Please refer to [link / reference]. Figures 1-2 As shown, the device includes a main body 100, and the main body 100 is equipped with a frame 110, a feed guide rail 120, and a main conveyor belt 130.

[0057] Unlike existing technologies, it also includes a position control and release mechanism 200, which is specifically composed of the following components:

[0058] The drum rotary assembly 210 includes a servo motor 2101, a main drive shaft 2102 that is connected to the servo motor 2101, and a star-shaped dial 2103 fixed on the main drive shaft 2102. The outer edge of the star-shaped dial 2103 is provided with an arc-shaped groove 2104 that is adapted to the outer diameter of the empty oil drum.

[0059] The pulse excitation assembly 220 includes a drive gear 2201 sleeved on the main drive shaft 2102, a driven gear ring 2202 meshing with the drive gear 2201, and a cam ring 2203 fixedly connected to the driven gear ring 2202. The outer wall of the cam ring 2203 is evenly distributed with a plurality of triangular protrusions 2204. It also includes a plurality of striking rods 2205 perpendicularly inserted into the side wall of the feed guide rail 120. The tail of each striking rod 2205 is connected to a force receiving plate 2206. A return spring 2207 is connected between the force receiving plate 2206 and the side wall of the feed guide rail 120. The force receiving plate 2206 slides against the side wall of the triangular protrusions 2204.

[0060] The arc-shaped limiting release component 230 includes an arc-shaped limiting baffle 2301, which is fixed to the top of the frame 110 and surrounds one side of the star-shaped dial 2103. The curvature of the arc-shaped limiting baffle 2301 is concentric with the rotation trajectory of the star-shaped dial 2103, and a bucket opening 2302 is provided at its end.

[0061] The visual airflow coordination component 240 includes a visual camera 2401 mounted on top of the drop bucket opening 2302 and an air nozzle 2402 fixed to the end of the arc-shaped limiting baffle 2301. The visual camera 2401 is fixed to the top of the frame 110 by a bracket 2403.

[0062] The feed guide rail 120 is inclined and fixed to the upper half of the frame 110, and its discharge end is connected to the feed side of the star-shaped dial wheel 2103; the main conveyor belt 130 is set at the bottom of the frame 110 and receives the drop bucket opening 2302 of the star-shaped dial wheel 2103.

[0063] The servo motor 2101 in the control and release mechanism 200 is fixed to the side wall of the frame 110, the main drive shaft 2102 is horizontally spanning the discharge end of the feed guide rail 120, and the star-shaped dial 2103 is fixed to the middle of the main drive shaft 2102.

[0064] The driving gear 2201 of the pulse excitation assembly 220 is coaxially fixed to one end of the main drive shaft 2102, so that the power of the servo motor 2101 can be synchronously distributed to the barrel-pulling action and the excitation action. The driven gear ring 2202 is installed on the outer side of the side wall of the feed guide rail 120. The cam ring 2203 is coaxially fixedly connected to the driven gear ring 2202. The striking rod 2205 passes through the side plate of the feed guide rail 120 laterally. One end faces the wall of the empty oil barrel in the inner cavity of the feed guide rail 120. The force plate 2206 at the other end extends into the movement trajectory of the cam ring 2203. The return spring 2207 is sleeved on the outside of the striking rod 2205, so that it tends to stay away from the inner cavity of the feed guide rail 120 under normal conditions.

[0065] The arc-shaped limiting baffle 2301 of the arc-shaped limiting release component 230 is fixed to the frame 110 and covers the bottom of the star-shaped dial 2103, with an annular gap between them to accommodate a single empty oil drum.

[0066] The visual camera 2401 of the visual airflow coordination component 240 is fixed above the frame 110 by the bracket 2403, with the lens aimed at the junction area of ​​the drop bucket opening 2302 and the main conveyor belt 130, and the air nozzle 2402 is set vertically downward.

[0067] The workflow is as follows:

[0068] 1) Synchronous excitation material handling stage

[0069] Empty oil drums are pushed into the inclined feed guide rail 120 in batches by the previous stage equipment. The servo motor 2101 starts, driving the main drive shaft 2102 and the star-shaped dial 2103 to rotate. At the same time, the drive gear 2201 on the main drive shaft 2102 drives the driven gear ring 2202 and the cam ring 2203 to rotate synchronously.

[0070] When the cam ring 2203 rotates, the triangular protrusions 2204 evenly distributed on its surface abut against the force plate 2206 of the striking rod 2205 in sequence, pushing the striking rod 2205 to overcome the resistance of the return spring 2207 and protrude into the inside of the feeding guide rail 120, striking the body of the empty oil drum. When the triangular protrusions 2204 pass the force plate 2206, the return spring 2207 releases its elastic force instantly, causing the striking rod 2205 to retract quickly. This process is repeated at high frequency, converting the single rotational motion of the servo motor 2101 into high-frequency pulse vibration of the feeding guide rail 120. This vibration breaks the electrostatic adsorption and mechanical jamming between the lightweight empty oil drums, causing the empty oil drums to become fluidized, slide downwards, and arrange themselves tightly.

[0071] 2) Arc-shaped limiting and isolation stage

[0072] The neatly arranged empty oil drums slide down to the end of the feeding guide rail 120 and are sequentially inserted into the arc-shaped slots 2104 on the outer edge of the star-shaped dial wheel 2103. As the star-shaped dial wheel 2103 rotates, the empty oil drums are brought into the annular gap formed by the star-shaped dial wheel 2103 and the arc-shaped limiting baffle 2301. The arc-shaped limiting baffle 2301 provides physical support to ensure that subsequent empty oil drums are blocked above the star-shaped dial wheel 2103 during the rotation and lowering process, achieving perfect single-row isolation, allowing only one empty oil drum to enter the drum opening at a time.

[0073] 3) Visual coordination and bucket placement stage

[0074] When the star-shaped dial 2103 rotates the empty oil drum to the bottom drop opening 2302, the empty oil drum loses the support of the arc-shaped limit baffle 2301 and falls vertically downwards towards the main conveyor belt 130 under the action of gravity.

[0075] The visual camera 2401 captures the transient characteristics of the empty oil drum falling in real time. When it is detected that the bottom of the empty oil drum is about to contact the main conveyor belt 130, the air nozzle 2402 sprays a downward airflow along the central axis of the empty oil drum. The downward airflow acts on the handle and shoulder of the empty oil drum, providing a vertical downward clamping force to prevent the empty oil drum from tipping over when it falls.

[0076] The pulse vibration assembly shares the same drive source with the drum-dispensing wheel, achieving adaptive matching where the faster the drum dispensing speed, the higher the material handling vibration frequency. The high-frequency, low-amplitude impact effectively eliminates static electricity and friction between plastic drums, preventing empty oil drums from clogging the slide and ensuring absolute continuity of front-end feeding. The combination of a star-shaped dispensing wheel and an arc-shaped limiting baffle enables zero-compression single-row interception of thin plastic bottles, avoiding the risk of traditional cylinder blocking mechanisms easily crushing empty bottles or scratching bottle labels. When a lightweight 5L empty oil drum falls onto the high-speed main conveyor belt, the horizontal tension of the conveyor belt and the drum's own inertia can easily generate a torque, causing the drum to tip backward. This application applies an invisible, vertically downward airflow at the moment the drum touches the conveyor belt. This brief downward pressure instantly increases the friction at the bottom of the drum, counteracting the overturning torque and allowing the extremely unstable empty oil drum to stand stably on the high-speed conveyor belt. This effectively improves the yield rate of the production line and enhances the automation efficiency and practicality of the entire edible oil filling line.

[0077] Example 2: In Example 1, if the visual airflow coordination component 240 sprays a fixed gas pressure, high-pressure gas is usually used. However, using high-pressure gas for a long time will increase production costs (e.g., it will always be in a high-power state). This example optimizes the visual airflow coordination component 240 so that it can adaptively adjust the gas pressure according to the on-site conditions. This can reduce costs, and the adaptive pressure adjustment can also maintain the stable transmission of empty oil drums. The specific solution is as follows:

[0078] The optimized visual airflow coordination component 240 includes:

[0079] The visual camera 2401 is used to capture transient images during the falling of the empty oil drum; the air nozzle 2402 is used to spray airflow with variable pressure; the bracket 2403 is used to fix the visual camera; the electronic proportional regulating valve 2404 is installed on the air supply line of the air nozzle and is used to precisely adjust the output gas pressure according to the electrical signal; the conveyor belt speed encoder 2405 is installed on the drive roller of the main conveyor belt 130 and is used to monitor the linear speed of the conveyor belt in real time; the temperature and humidity sensor 2406 is installed near the drum opening 2302 and is used to collect the air humidity of the working environment; the central controller 2407 includes a microprocessor and I / O interface and serves as the hardware computing and control center of the entire component.

[0080] The visual camera 2401 is fixed above the frame 110 by the bracket 2403, and the lens is aimed at the boundary airspace between the bucket opening 2302 at the end of the arc-shaped limiting baffle 2301 and the main conveyor belt 130.

[0081] The air nozzle 2402 is vertically fixed directly above the drop bucket opening 2302, and its air inlet is connected to the air outlet of the electronic proportional regulating valve 2404 through an air pipe; the electronic proportional regulating valve 2404 is fixed to the side of the frame 110, and its air inlet is connected to the main air source of the workshop; the conveyor belt speed encoder 2405 is coaxially installed at the end of the driven roller or the driving roller of the main conveyor belt 130; the temperature and humidity sensor 2406 is fixed to the outer wall of the arc-shaped limit baffle 2301 by bolts, and the probe faces the open air circulation area;

[0082] The central controller 2407 is installed in the electrical control box on one side of the rack 110 and is electrically connected to the vision camera 2401, the electronic proportional regulating valve 2404, the conveyor belt speed encoder 2405 and the temperature and humidity sensor 2406 via shielded cables.

[0083] The central controller 2407 includes several modules:

[0084] The acquisition module is responsible for acquiring raw state data from various sensors and buses. The visual feature extraction module is responsible for edge detection and contour fitting of the image input from the visual camera and extracting posture data. The calculation module is responsible for standardizing physical quantities of different dimensions and calculating the overturning risk index. The adaptive pressure decision module is responsible for comparing the calculated index with the preset threshold and generating the final pressure control command.

[0085] The acquisition module receives pulse signals and voltage signals sent by the conveyor belt speed encoder 2405 and temperature and humidity sensor 2406 at regular intervals (e.g. every 10ms) via RS485 bus or analog interface, analyzes them into conveyor belt speed fluctuation deviation rate and ambient relative humidity, and sends them to the calculation module through internal shared memory.

[0086] The visual camera 2401 sends a high frame rate video stream to the visual feature extraction module via a gigabit network port; after processing, the visual feature extraction module extracts the drop angle of the central axis of the empty oil drum and sends the numerical data to the calculation module.

[0087] The measurement module receives the conveyor belt speed fluctuation deviation rate, ambient relative humidity, and fall angle. After completing matrix operations and weighted calculations, it generates a specific overturning risk index and sends it to the adaptive air pressure decision module via an event trigger.

[0088] Conveyor belt speed fluctuation deviation rate Derived from encoder 2405, if the main conveyor belt speed suddenly fluctuates (greater than the set reference speed), the frictional torque generated instantaneously at the bottom of the empty oil drum will change abruptly. Due to inertia, it is extremely easy to tilt backward. The relative humidity H is derived from temperature and humidity sensor 2406. The plastic empty oil drum is extremely light. The lower the humidity and the drier the air, the more severe the accumulation of static electricity generated by friction on the surface of the plastic drum. The electrostatic repulsion or attraction will seriously interfere with the normal gravity-fall trajectory of the oil drum, causing the falling angle to deviate. Derived from the visual module, it refers to the angle between the central axis of the oil drum and the vertical line of gravity when the drum falls. The larger the angle, the farther the line of gravity deviates from the center of the support surface at the bottom of the drum, and the more unstable it is.

[0089] Before leaving the factory, the weights are calculated using the entropy weighting method based on historical sample data. m drop samples are collected during the equipment's trial operation, and the data matrix of the above three indicators is recorded. The information entropy of each indicator is automatically calculated.

[0090] The more volatile the data and the more sensitive the indicator is to the overturning result, the lower its information entropy, and the larger its weight coefficient w. The calculated weight is labeled as follows. Speed ​​fluctuation, humidity, Angle of deflection, and .

[0091] To unify data from different units (m / s, %, degrees) to the [0, 1] range. For positively correlated indicators (speed fluctuation deviation rate)... Falling angle (The larger the value, the easier it is to tip over) That is: For indicators that show a negative correlation (relative humidity H, the lower the humidity, the drier the environment, the stronger the static electricity, and the easier it is to tip over), that is: ,in This is the current collected value. and For the calibrated physical limit maximum / minimum value, This is the dimensionless mapping value.

[0092] The formula for calculating the rollover risk index is: in, The overturning risk index ranges from 0 to 1. The weights are the normalized speed fluctuation deviation rate, the normalized ambient relative humidity, and the normalized fall angle, respectively. At the moment the empty oil drum falls and touches the conveyor belt, the shear friction force of the conveyor belt, the electrostatic adsorption / repulsion force of the space, and the deviation of the line of action of gravity on its bottom are the factors.

[0093] The adaptive pressure decision module receives the overturning risk index, substitutes it into the compensation control algorithm to calculate the target pressure value, and then converts it into an analog voltage signal (such as 0-10V), which is sent to the drive circuit of the electronic proportional control valve 2404 through the controller's D / A output channel.

[0094] Using the baseline normal distribution 3 The principle is set so that, under the condition of normal operation without load (no abnormal interference, and buckets falling smoothly), 1000 sets of standard data are collected to calculate the average value of the tipping risk index. and standard deviation Set a preset index threshold When the calculated rollover risk index exceeds the index threshold, statistically it means that it has deviated from the stable normal state and the probability of rollover has substantially increased.

[0095] When the risk index of overturning Greater than the preset exponential threshold When the probability of tipping over increases sharply, the air pressure compensation mechanism is activated, and the basic set air pressure is automatically increased.

[0096] The air pressure adaptive compensation formula is set in the initial state (daily energy-saving operation), with the injection pressure of the air nozzle as the base air pressure setting. :

[0097] ,in The target air pressure that the electronic proportional control valve needs to output; This is the air pressure compensation gain coefficient, in MPa, which depends on the response characteristics of the pneumatic components; This is a penalty term for exceeding limits; the greater the exceedance, the larger the increase in compensating air pressure. In physics, to prevent a lightweight cylinder (empty oil drum) with an initial velocity and initial tilt angle from tipping over, a counter-rotating corrective torque must be applied. (The formula contains...) This is equivalent to an error signal, which is then converted into specific physical aerodynamic pressure. The greater the external disturbance (i.e., the further the risk of falling exceeds the safety boundary), the greater the volume of air jetted downwards from the high-pressure nozzle, resulting in stronger aerodynamic downforce (i.e., aerodynamic damping) at the shoulder of the empty oil drum, precisely counteracting the overturning moment.

[0098] air pressure compensation gain coefficient This represents the air pressure response sensitivity, i.e.:

[0099] For every unit the instability evolution index exceeds the threshold (i.e., 100%), the electronic proportional control valve requires an additional peak pressure output (usually in MPa).

[0100] air pressure compensation gain coefficient Based on the inherent hardware properties of specific pneumatic pipelines and mechanical structures, these properties are typically obtained through a combination of dynamic modeling and experimental calibration before the equipment leaves the factory.

[0101] First, the mass (typically between 100g and 130g) and geometric center of gravity of the empty 5L plastic oil container were measured. Dynamic calculations were then performed to determine:

[0102] When the oil drum is at its maximum tilting angle (the critical state before it overturns), let's assume... When = 1, the minimum instantaneous downward restoring force required to stabilize it. .

[0103] Based on the nozzle cross-sectional area of ​​the high-pressure air nozzle and Bernoulli's equation in fluid dynamics, the restoring force generated is calculated. The required air pressure at the end of the pipeline is denoted as Take the daily baseline air pressure as ,but

[0104] air pressure compensation gain coefficient The reference calibration value can be obtained through the formula Calculations show that a high-frequency, high-speed drop test was conducted on-site using a dummy barrel, and the micro-adjustment knob was used to... The step response is fine-tuned by ±10 until the drop yield reaches the optimal level, and the value is then stored in the non-volatile memory of the central controller.

[0105] Considering that the empty plastic bottles used in the edible oil production line are extremely light, and the main air supply pressure in the workshop is usually between 0.6 and 0.8 MPa, in order to prevent the empty oil drums from being "blown away" or "crushed" due to excessive compensating airflow pressure, while ensuring sufficient pneumatic downforce, the daily basic set air pressure... Typically, the value is set to extremely low, between 0.02 and 0.05 MPa (to maintain only a very weak guiding airflow), with the preset maximum compensation peak pressure. The pressure is typically limited to between 0.2 and 0.35 MPa. Substituting the above physical relationships, the pressure compensation gain coefficient is calculated. The typical value range is 0.15 MPa to 0.45 MPa.

[0106] like Figures 3-4 As shown, the specific operation process is as follows:

[0107] After the feeding device is started, the central controller 2407 outputs voltage to the electronic proportional regulating valve 2404 by default to maintain the basic set air pressure. At this moment, the empty oil drum that is falling normally is only assisted by the airflow of the basic set air pressure when it touches the belt, which meets the falling requirements under normal stable conditions and greatly reduces the continuous high power energy consumption of the air compressor.

[0108] During operation, the conveyor belt speed encoder 2405 and temperature and humidity sensor 2406 continuously monitor external disturbances, the vision camera 2401 locks each empty oil drum that is about to leave the barrel opening 2302 at a high frame rate, and the hardware sensors gather electrical signals to the central controller 2407.

[0109] The central controller 2407 extracts the current speed fluctuation deviation rate, ambient relative humidity, and the falling angle of the barrel, performs dimensionless calculation, and then calculates the current tipping risk index through fusion. If a sudden drop in humidity and surge in static electricity occur due to a sudden drop in workshop temperature, or if an oil drum's initial posture is poor, resulting in an excessive falling angle, the calculated tipping risk index will increase. Once the tipping risk index... Greater than the exponential threshold The adaptive pressure decision module calculates the target pressure that the electronic proportional control valve needs to output. The central controller 2407 increases the analog voltage output to the electronic proportional control valve 2404 within a very short time (milliseconds);

[0110] The electronic proportional control valve opens rapidly, and the air nozzle 2402 sprays out a strong high-pressure downward airflow (the air pressure is directly proportional to the tipping risk index). The increased airflow acts on the shoulder of the empty oil drum with a serious tendency to tip over, and uses the pneumatic downward pressure to forcibly counteract its complex tipping moment, so that it lands stably on the main conveyor belt 130.

[0111] After the risky drum has smoothly transitioned, as a new, properly positioned oil drum enters the identification zone, the tipping risk index drops back below the threshold, and the control valve automatically returns to the baseline air pressure setting. .

[0112] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0113] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding device for producing bottled edible oil, comprising a device body (100), wherein a frame (110), a feeding guide rail (120), and a main conveyor belt (130) are provided inside the device body (100), characterized in that: It also includes a control and release mechanism (200), which includes a drum wheel assembly (210), a pulse excitation assembly (220), an arc-shaped limit release assembly (230), and a visual airflow coordination assembly (240). The servo motor (2101) of the control release mechanism (200) is fixed to the side wall of the frame (110), the main drive shaft (2102) is horizontally across the discharge end of the feed guide rail (120), and the star-shaped dial wheel (2103) is fixed in the middle of the main drive shaft (2102); The driving gear (2201) of the pulse excitation assembly (220) is coaxially fixed to one end of the main drive shaft (2102), so that the power of the servo motor (2101) can be synchronously distributed to the barrel-pulling action and the excitation action. The driven gear ring (2202) is installed on the outside of the side wall of the feed guide rail (120). The cam ring (2203) is coaxially fixed to the driven gear ring (2202). The striking rod (2205) passes through the side plate of the feed guide rail (120) laterally, and one end of the striking rod (2205) faces the wall of the empty oil barrel in the inner cavity of the feed guide rail (120). The force plate (2206) fixed at the other end extends into the movement trajectory of the cam ring (2203). The return spring (2207) is sleeved on the outside of the striking rod (2205), so that it tends to stay away from the inner cavity of the feed guide rail (120) under normal conditions. The arc-shaped limiting baffle (2301) of the arc-shaped limiting release component (230) is fixed to the frame (110) and covers the bottom of the star-shaped dial (2103), with an annular gap between them to accommodate a single empty oil drum. The visual airflow coordination component (240) is used to identify the falling posture of the empty oil drum and adaptively adjust the downward airflow to prevent the drum from tipping over.

2. The feeding device for producing bottled edible oil according to claim 1, characterized in that: The operation of the feeding device includes the following steps: Empty oil drums are pushed into the inclined feed guide rail (120) in batches. The servo motor (2101) is started, driving the main drive shaft (2102) and star-shaped dial wheel (2103) to rotate. The drive gear (2201) on the main drive shaft (2102) drives the driven gear ring (2202) and cam ring (2203) to rotate synchronously. When the cam ring (2203) rotates, the triangular protrusions (2204) evenly distributed on its surface abut against the force plate (2206) of the striking rod (2205) in sequence, pushing the striking rod (2205) to thrust into the inside of the feed guide rail (120) and strike the body of the empty oil drum. When the triangular protrusions (2204) pass the force plate (2206), the return spring (2207) releases its elastic force, causing the striking rod (2205) to retract. Repeat the above steps to convert the rotational motion of the servo motor (2101) into pulse vibration of the feed guide rail (120), thereby breaking the electrostatic adsorption and mechanical jamming between the empty oil drums and making the empty oil drums fluidized. The empty oil drum slides to the end of the feeding guide rail (120) and is sequentially inserted into the arc-shaped groove (2104) on the outer edge of the star-shaped dial wheel (2103). The rotation of the star-shaped dial wheel (2103) brings the empty oil drum into the annular gap formed by the star-shaped dial wheel (2103) and the arc-shaped limiting baffle (2301). Subsequent empty oil drums are blocked above the star-shaped dial wheel (2103), achieving single-row isolation.

3. The feeding device for producing bottled edible oil according to claim 1, characterized in that: The visual airflow coordination component (240) includes: A vision camera (2401) captures transient images during the falling of an empty oil drum. An air nozzle (2402) sprays air with variable pressure. A bracket (2403) fixes the vision camera (2401). An electronic proportional regulating valve (2404) is installed on the air supply line of the air nozzle (2402) to adjust the output gas pressure according to the electrical signal. A conveyor belt speed encoder (2405) is installed on the drive roller of the main conveyor belt (130) to monitor the linear speed of the conveyor belt in real time. A temperature and humidity sensor (2406) is installed at the drum opening (2302) to collect the air humidity of the working environment. A central controller (2407) includes a microprocessor and I / O interfaces.

4. The feeding device for producing bottled edible oil according to claim 3, characterized in that: The optimized visual airflow coordination component (240) includes: The visual camera (2401) is tilted and fixed above the frame (110) by the bracket (2403), and the lens is aimed at the boundary airspace between the bucket opening (2302) at the end of the arc-shaped limiting baffle (2301) and the main conveyor belt (130); The air nozzle (2402) is vertically fixed above the drop bucket opening (2302). Its air inlet is connected to the air outlet of the electronic proportional regulating valve (2404) through an air pipe. The electronic proportional regulating valve (2404) is fixed on the side of the frame (110). Its air inlet is connected to the main air source of the workshop. The conveyor belt speed encoder (2405) is coaxially installed at the end of the driven roller or the driving roller of the main conveyor belt (130). The temperature and humidity sensor (2406) is fixed to the outer wall of the arc limit baffle (2301) by bolts. The probe faces the open air circulation area. The central controller (2407) is installed in the electrical control box on the side of the rack (110) and is electrically connected to the vision camera (2401), the electronic proportional control valve (2404), the conveyor belt speed encoder (2405), and the temperature and humidity sensor (2406) via shielded cables.

5. The feeding device for producing bottled edible oil according to claim 3, characterized in that: The central controller (2407) integrates multiple modules, including a data acquisition module, a visual feature extraction module, a measurement module, and an adaptive barometric pressure decision module. The acquisition module receives pulse signals and voltage signals sent by the conveyor belt speed encoder (2405) and temperature and humidity sensor (2406), analyzes them into the conveyor belt speed fluctuation deviation rate and the ambient relative humidity, and sends them to the calculation module through the internal shared memory; The visual camera (2401) sends the video stream to the visual feature extraction module; After processing by the visual feature extraction module, the falling angle of the central axis of the empty oil drum is extracted and sent to the measurement module. The measurement module receives the conveyor belt speed fluctuation deviation rate, ambient relative humidity, and drop angle. After completing matrix operations and weighted calculations, it generates a tipping risk index and sends it to the adaptive air pressure decision module via an event trigger. The adaptive pressure decision module receives the overturning risk index, substitutes it into the compensation control algorithm to calculate the target pressure value, converts it into an analog voltage signal, and sends it to the drive circuit of the electronic proportional control valve (2404) through the controller's D / A output channel.

6. The feeding device for producing bottled edible oil according to claim 5, characterized in that: The operation of the visual airflow coordination component (240) includes the following steps: After the feeding device is started, the central controller (2407) outputs voltage to the electronic proportional regulating valve (2404) to maintain the basic set air pressure. ; During operation, the conveyor belt speed encoder (2405) and temperature and humidity sensor (2406) continuously monitor external disturbances, the vision camera (2401) locks onto each empty oil drum that is about to leave the barrel opening (2302), and the hardware sensors gather electrical signals to the central controller (2407). The central controller (2407) extracts the current speed fluctuation deviation rate, ambient relative humidity, and the falling angle of the barrel, and calculates the current tipping risk index by fusion. ; If the risk index is overturned Greater than the exponential threshold The adaptive pressure decision module calculates the target pressure that the electronic proportional control valve needs to output. The central controller (2407) increases the analog voltage output to the electronic proportional control valve (2404); The electronic proportional control valve (2404) increases the opening ratio, and the air nozzle (2402) sprays the increased downward airflow onto the shoulder of the empty oil drum. The pneumatic downward pressure counteracts the overturning moment, allowing it to land stably on the main conveyor belt (130). After the risk tank has transitioned smoothly, if the tipping risk index falls back below the threshold, the electronic proportional control valve (2404) will automatically adjust back to the base setting pressure. .

7. The feeding device for producing bottled edible oil according to claim 6, characterized in that: The adaptive pressure decision module receives the rollover risk index, substitutes it into the compensation control algorithm to calculate the target pressure value, and the expression is: ,in The target air pressure that the electronic proportional control valve needs to output. This is the pressure compensation gain coefficient, in MPa. To assess the risk of overturning, For the exponential threshold, This is a penalty item for exceeding the limit.

8. The feeding device for producing bottled edible oil according to claim 1, characterized in that: The position release mechanism (200) also includes a visual airflow coordination component (240). The visual airflow coordination component (240) includes a visual camera (2401) mounted on top of the drop bucket opening (2302) and an air nozzle (2402) fixed to the end of the arc-shaped limiting baffle (2301). The visual camera (2401) is fixed to the top of the frame (110) by a bracket (2403).

9. The feeding device for producing bottled edible oil according to claim 8, characterized in that: When the star-shaped dial (2103) rotates the empty oil drum to the bottom drop opening (2302), the empty oil drum loses the support of the arc-shaped limiting baffle (2301) and falls vertically downwards towards the main conveyor belt (130) under the action of gravity.

10. The feeding device for producing bottled edible oil according to claim 9, characterized in that: The visual camera (2401) captures the transient characteristics of the falling empty oil drum. When it is detected that the bottom of the empty oil drum is about to contact the main conveyor belt (130), the air nozzle (2402) sprays a downward airflow along the central axis of the empty oil drum.

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