Fully automatic onion peeling machine

Abstract

This utility model relates to the field of onion processing technology, specifically a fully automatic onion peeling machine. It includes a mounting frame, a conveyor belt disposed inside the mounting frame, and a peeling mechanism mounted above the mounting frame. The conveyor belt transports onions, and the peeling mechanism blows high-pressure air downwards to remove the onion skins. An elevator is located at the front end of the conveyor belt, with a hopper at its lower end and a slicing mechanism mounted at its upper end. The slicing mechanism includes symmetrically fixed mounting frames on the mounting frame, with a support rod between the two mounting frames. Several L-shaped rods are rotatably connected at equal intervals on the support rod, and blades are mounted at the lower ends of the L-shaped rods. This utility model solves the problem of existing technologies requiring operators to manually score the onions before placing them in the machine, which is cumbersome and labor-intensive.

Description

Technical Field

[0001] This utility model relates to the field of onion processing technology, specifically a fully automatic onion peeling machine. Background Technology

[0002] Onions are a nutritious and widely consumed vegetable, easy to store, and available year-round. Consumption is high, and my country has a large onion-growing area, supplying not only domestic needs but also exporting significant quantities. Before processing onions, their outer skin needs to be peeled. There are two methods for peeling onions: manual and mechanical. Manual peeling is labor-intensive, time-consuming, and very inefficient. Currently, most processing plants use air-blowing or water-washing onion peeling machines.

[0003] Another Chinese patent of this applicant, 202222701050.5, discloses "An Onion Peeling Machine," authorized publication number CN218737113U. This device has a conveying mechanism for transporting onions mounted on a support frame, and a peeling mechanism mounted above the conveying mechanism. The peeling mechanism blows high-pressure air downwards to remove the onion skin. The conveying mechanism includes a chain drive mechanism and several rollers. The rollers are arranged at equal intervals and driven by the chain drive mechanism for cyclical transport. A roller is rotatably fitted on each roller, and a rolling mechanism is installed at the side end of each roller. The rolling mechanism drives all the rollers located on the conveying surface to rotate around the roller, and the upper side of the roller rotates in the opposite direction to the conveying direction of the roller. This utility model, through a reasonable mechanical structure, makes the onion roll during transport, ensuring that the knife marks on the onion surface are reversed to face the high-pressure air, ensuring the onion peeling effect, while also ensuring that the usable inner layer of the onion is not damaged.

[0004] The existing technical solution has the following drawbacks: although the above technical solution can quickly peel onions, before the onions are put into the machine, the operator needs to manually make knife marks on the onions, which is cumbersome and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to provide a fully automatic onion peeling machine, which solves the problem that in the existing technical solutions, operators need to manually score the onions before putting them into the machine, which is cumbersome and labor-intensive.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic onion peeling machine, comprising a mounting frame, a conveyor belt disposed inside the mounting frame, and a peeling mechanism mounted above the mounting frame. The conveyor belt is used to transport onions, and the peeling mechanism blows high-pressure air downwards to remove the onion skins. A lifting machine is disposed at the front end of the conveyor belt, a hopper is disposed at the lower end of the lifting machine, and a slicing mechanism is disposed at the upper end of the lifting machine. The slicing mechanism includes mounting frames symmetrically fixedly connected to the mounting frame, a support rod is disposed between the two mounting frames, and several L-shaped rods are rotatably connected at equal intervals on the support rod. Blades are disposed at the lower ends of the L-shaped rods.

[0007] With the above structural design, the operator puts the onion into the hopper, and the hoist lifts the onion and sends it to the conveyor belt. As the onion falls from the hoist onto the conveyor belt, it passes through the peeling mechanism. The blades on the peeling mechanism will scratch the surface of the onion skin, so that the onion can be sprayed by the high-pressure air above as it is conveyed by the conveyor belt, thus blowing off the onion skin.

[0008] Preferably, a guide frame is fixedly connected to the lower end of the L-shaped rod. The guide frame is arranged at an angle, the blade is located inside the guide frame, and a threaded rod passes through the upper end of the guide frame. The threaded rod is rotatably connected to one end of the blade.

[0009] With the above structural design, the threaded rod and the guide frame are threaded together. By rotating the threaded rod, the blade is pushed out of the guide frame, thereby controlling the length of the blade tip when the onion comes into contact with the blade, and thus controlling the depth of the cut on the onion's outer skin.

[0010] Preferably, a counterweight is fixedly connected to the rear end of the L-shaped rod.

[0011] With the above structural design, the counterweight can be set to adjust the tilt angle or pressure of the blade, helping the blade maintain a constant contact force when slicing. During the slicing process, the blade needs to reciprocate, and the counterweight increases the mass to ensure the stability of the blade's movement trajectory.

[0012] Preferably, an air inlet is installed at the bottom of the L-shaped rod near the blade head, and the air inlet faces the same direction as the blade head.

[0013] With the above structural design, the air inlet and the blade face the same direction, allowing for the simultaneous release of high-pressure airflow to apply impact force to the onion's skin. As the blade moves, the airflow accelerates the separation of the onion's outer skin from its interior, facilitating the subsequent peeling process. Simultaneously, the airflow generated at the inlet washes over the blade surface, preventing skin debris from adhering to the blade and extending its lifespan.

[0014] Preferably, a baffle is provided between the two mounting frames.

[0015] With the above structural design, the baffle can limit the displacement of the blade during reciprocating motion, thus preventing the blade from damaging the fruit pulp.

[0016] Preferably, the mounting frame has positioning grooves, and the two ends of the support rod are respectively placed in the two positioning grooves. The two ends of the support rod are threaded with positioning bolts, and the sidewalls of the positioning bolts abut against the sidewalls of the mounting frame.

[0017] By employing the above structural design, the position of the blade on the L-shaped rod can be changed by adjusting the position of the support rod within the positioning groove to accommodate the peeling needs of onions of different sizes. The positioning bolts, connected by threads, secure the support rod within the positioning groove, preventing slippage of the support rod due to vibration or blade cutting during equipment operation.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The operator places onions into a hopper, which is then lifted by an elevator and fed onto a conveyor belt. As the onions fall from the elevator onto the conveyor belt, they pass through a slicing mechanism. Blades on this mechanism create scratches on the onion's outer skin, allowing it to be sprayed off by high-pressure air as it travels along the conveyor belt. This device automatically creates slicing marks on the onion's skin, replacing manual slicing and achieving fully automated onion peeling, thus improving production efficiency and saving manpower. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the first half of the structure of this utility model;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A;

[0024] Figure 5 This is a schematic diagram of the skin-slicing mechanism of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the L-shaped rod of this utility model;

[0026] Figure 7 This is a side view of the L-shaped rod of this utility model;

[0027] Figure 8This is a schematic diagram of the peeling mechanism of this utility model;

[0028] Figure 9 This is a schematic diagram of the rolling mechanism of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1 to 8 This utility model provides a technical solution: a fully automatic onion peeling machine, including a mounting frame 1, a conveyor belt 3 disposed inside the mounting frame 1, and a peeling mechanism 2 mounted above the mounting frame 1. The conveyor belt 3 is used to transport onions. The conveyor belt 3 is a roller conveyor belt with a certain interval between adjacent rollers, allowing onion peels to fall between the rollers and into the discharge port 7 located at the lower end of the conveyor belt 3. A rolling mechanism is also provided above the roller conveyor belt 2. The rolling mechanism includes two pulleys 17, a V-belt 18, and several pressure rollers 19. The two pulleys 17 are respectively mounted at the upper ends of the conveyor belt 3. One of the pulleys 17 is connected to the drive device of the conveyor belt 3. The V-belt 18 is sleeved on the pulley 17. The pressure rollers 19 are evenly distributed and mounted above the lower layer of the V-belt 18, and the pressure rollers 19 make the lower layer of the V-belt 18 fit against the rollers on the conveyor belt 3. When the pulley 17 drives the V-belt 18 to move, the friction between the V-belt 18 and the roller drives the roller to rotate, thereby making the onion on the roller rotate. This allows the high-pressure air sprayed from the nozzle 16 to impact the cut part of the onion, making it easier to peel the onion.

[0031] The peeling mechanism 2 blows high-pressure air downwards to remove the onion skin. A lifting machine 4, an inclined belt bucket elevator, is installed at the front end of the conveyor belt 3. A hopper 6 is located at the lower end of the lifting machine 4. The lifting machine 4 ensures that the onions are arranged in a single layer when fed into the peeling mechanism 5. The peeling mechanism 5 is installed at the upper end of the lifting machine 4, located between the lifting mechanism 4 and the conveyor belt 3. The peeling mechanism 5 includes mounting frames 501 symmetrically fixed to the mounting frame 1. A support rod 503 is provided between two mounting frames 501. Several L-shaped rods 504 are rotatably connected at equal intervals on the support rods 503. Blades 505 are provided at the lower end of each L-shaped rod 504. The L-shaped rods 504 on the support rods 503 swing, causing the blades 505 to cut the onion skin. The peeling mechanism includes a turntable 15 and an air nozzle 16. The turntable 15 is rotatably connected to the supporting beam 13. The air nozzle 16 is installed on the outer circle of the turntable 15. Two air nozzles 16 are centrally symmetrically installed on the turntable 15. The air nozzles 16 are inclined along the tangent direction of the circumference.

[0032] The lower end of the L-shaped rod 504 is fixedly connected to a guide frame 9. The guide frame 9 is arranged at an angle, and the blade 505 is located inside the guide frame 9. Multiple blades 505 can be arranged at intervals inside the guide frame 9 as needed. In this embodiment, two blades 505 are arranged inside one guide frame 9. A threaded rod 10 passes through the upper end of the guide frame 9, and the threaded rod 10 is rotatably connected to one end of the blade 505.

[0033] The rear end of the L-shaped rod 504 is fixedly connected to a counterweight 8.

[0034] An air inlet 506 is installed at the bottom of the L-shaped rod 504 near the tip of the blade 505, and the air inlet 506 faces the same direction as the tip of the blade 505. High-pressure air is supplied to the air inlet 506 by an air compressor connected to the air inlet 506. In this embodiment, the blade 505 is a utility knife blade. When the tip of the blade 505 is damaged, the damaged part is broken off through the pre-cut marks on the blade 505, and the threaded rod 10 is rotated to allow a new tip to extend from the guide frame 9. This avoids frequent replacement of the blade 505 and saves materials.

[0035] A baffle 502 is provided between the two mounting frames 501, and the baffle 502 is located at the front end of the slicing mechanism 5.

[0036] The mounting frame 501 has a positioning groove 11. The two ends of the support rod 503 are respectively placed in the two positioning grooves 11. The two ends of the support rod 503 are threaded with positioning bolts 12, and the side wall of the positioning bolts 12 abuts against the side wall of the mounting frame 501.

[0037] Working principle: First, the operator puts the onions into the hopper 6 and starts the elevator 4. The conveyor plate on the elevator 4 transports the onions in a single layer to the peeling mechanism 5. As the onions fall from the elevator 4 onto the conveyor belt 3, they pass through the peeling mechanism 5. The blades 505 on the peeling mechanism 5 scratch the surface of the onion skin. At the same time, after the blades 505 cut open the skin, the air outlet 506 immediately blows out a high-pressure airflow. The airflow can accelerate the separation of the onion skin from the inside, which facilitates the subsequent work of the peeling mechanism 2 and improves the peeling efficiency. During the conveyor belt 3, the nozzle 16 of the peeling mechanism 2 sprays high-pressure air downwards, and uses air pressure impact to further peel off the remaining skin. The peeled onion skin falls into the discharge port 7 through the gap between the rollers of the conveyor belt 3, and the peeled onions fall into the collection box from the rear end of the conveyor belt 3, thus realizing the automatic peeling of onions.

[0038] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic onion peeling machine, comprising a mounting frame (1), a conveyor belt (3) disposed inside the mounting frame (1), and a peeling mechanism (2) mounted above the mounting frame (1), characterized in that: The conveyor belt (3) is used to transport onions. The peeling mechanism (2) blows high-pressure air downwards to remove the onion skin. The front end of the conveyor belt (3) is provided with an elevator (4). The lower end of the elevator (4) is provided with a hopper (6). The upper end of the elevator (4) is equipped with a peeling mechanism (5). The peeling mechanism (5) includes a mounting frame (501) symmetrically fixedly connected to the mounting frame (1). A support rod (503) is provided between the two mounting frames (501). Several L-shaped rods (504) are equidistantly rotatably connected to the support rod (503). A blade (505) is provided at the lower end of the L-shaped rod (504).

2. The fully automatic onion peeling machine according to claim 1, characterized in that: The lower end of the L-shaped rod (504) is fixedly connected to a guide frame (9), the guide frame (9) is arranged at an angle, the blade (505) is located inside the guide frame (9), and the upper end of the guide frame (9) is through a threaded rod (10), the threaded rod (10) is rotatably connected to one end of the blade (505).

3. A fully automatic onion peeling machine according to claim 1 or 2, characterized in that: The rear end of the L-shaped rod (504) is fixedly connected to a counterweight (8).

4. A fully automatic onion peeling machine according to claim 1 or 2, characterized in that: An air inlet (506) is installed at the bottom of the L-shaped rod (504) near the blade (505) tip, and the air inlet (506) is aligned with the blade (505) tip.

5. The fully automatic onion peeling machine according to claim 1, characterized in that: A stop bar (502) is provided between the two mounting frames (501).

6. The fully automatic onion peeling machine according to claim 1, characterized in that: The mounting frame (501) has a positioning groove (11), and the two ends of the support rod (503) are respectively placed in the two positioning grooves (11). The two ends of the support rod (503) are threaded with positioning bolts (12), and the side wall of the positioning bolts (12) abuts against the side wall of the mounting frame (501).

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