A canned peach grading and immersion packaging apparatus and method

Abstract

The present application relates to the technical field of canned food production, in particular to a grading immersion packaging equipment and method for canned pears, which comprises a conveying mechanism and a first-stage filling mechanism, a second-stage filling mechanism and a packaging mechanism arranged in sequence along the conveying direction of the conveying mechanism, the conveying mechanism being used for conveying a to-be-packaged can body containing pears; the first-stage filling mechanism is used for adding immersion sugar solution into the to-be-packaged can body; the second-stage filling mechanism is used for adding filling sugar solution into the to-be-packaged can body; and the packaging mechanism is used for performing capping work on the to-be-packaged can body. Through cooperation of the liquid spraying assembly and the can body clamping mechanism, the can body can be inclined to one side or the other side during first-stage filling, and the liquid outlet end of the liquid spraying assembly is directed to the higher side of the can body inner cavity, so that the pear pieces tend to be located at the lower side under the action of gravity, thereby reducing the situation that the sugar solution directly impacts the pear pieces and reducing the risk of damage to the fruit flesh.

Description

Technical Field

[0001] This invention relates to the field of canned food production technology, specifically to a graded impregnation and packaging equipment and method for canned pears. Background Technology

[0002] Canned pears are a common processed fruit and vegetable product. The processing generally involves first pre-treating the pears by chopping and steaming them, then filling empty cans. Next, a measured amount of sugar syrup is added to the cans on a filling line, and finally, the cans are sealed to produce the finished product. This filling process typically requires the sugar syrup to be evenly distributed within the cans to ensure the pear pieces maintain a good maceration condition during their shelf life.

[0003] However, existing filling technologies mostly employ a unidirectional, top-to-bottom direct-spray structure. Since the pear chunks are already quite soft after steaming, and the structural strength of the flesh is significantly reduced, when the sugar solution is sprayed directly into the can at a certain flow rate and impact force onto the surface of the pear chunks, it easily damages the flesh tissue, leading to breakage, surface fuzzing, or edge defects. This damage not only affects the overall appearance of the finished product but also accelerates sugar solution penetration due to the rupture of flesh cells, resulting in a poorer taste and a softer, more mushy texture.

[0004] Therefore, how to reduce the impact damage of sugar solution on the cooked pear pulp during the filling process while ensuring filling efficiency is an urgent problem to be solved in the current processing and production of canned pears. To this end, this invention proposes a graded impregnation and packaging equipment and method for canned pears to effectively solve the above-mentioned drawbacks. Summary of the Invention

[0005] The purpose of this invention is to provide a graded impregnation and packaging equipment and method for canned pears, which solves the problem that pear pulp is easily damaged by the impact of sugar solution during the filling process.

[0006] This invention is achieved through the following technical solution: a graded impregnation and packaging device for canned pears, comprising a conveying mechanism, and a primary filling mechanism, a secondary filling mechanism, and a packaging mechanism arranged sequentially along the conveying direction of the conveying mechanism. The conveying mechanism is used to convey cans containing pears to be packaged; the primary filling mechanism is used to add impregnation syrup to the cans to be packaged; the secondary filling mechanism is used to add filling syrup to the cans to be packaged; and the packaging mechanism is used to perform a capping operation on the cans to be packaged. The primary filling mechanism includes a hollow seat, which is fixedly disposed on one side of the conveying mechanism in the width direction. The top of the hollow seat is provided with a liquid outlet pipe. A sliding seat that can be raised and lowered is slidably disposed on the surface of the hollow seat and below the liquid outlet pipe. A liquid spraying component is movably disposed on the sliding seat. The liquid spraying component and the liquid outlet pipe are connected by a flexible hose. The liquid spraying component can swing relative to the sliding seat so that its liquid outlet end can be tilted to both sides in the width direction of the conveying mechanism. The conveying mechanism is provided with a can clamping mechanism at the position corresponding to the first-level filling mechanism. The can clamping mechanism can clamp the can to be packaged and drive the can to be packaged to tilt to one side or the other side of the width direction of the conveying mechanism around the axis extending along the conveying direction of the conveying mechanism. The tank clamping mechanism is configured to cooperate with the spraying assembly so that when the liquid outlet of the spraying assembly points to one side of the width direction of the conveying mechanism, the tank clamping mechanism can drive the tank to tilt to the other side so that the liquid outlet of the spraying assembly points to the higher side of the inner cavity of the tank.

[0007] To enable the spray assembly to flexibly adjust the liquid outlet direction, the spray assembly includes a base plate, which is fixedly connected to a sliding seat. Two rotating parts are rotatably mounted on the base plate, each with an inclined spray tube. The bottom ends of the two inclined spray tubes together form the liquid outlet of the spray assembly. The top ends of the two inclined spray tubes are connected to a T-junction via flexible hoses, and the other end of the T-junction is connected to the liquid outlet pipe via a flexible hose. The spray assembly also includes a drive rack and two driven gear rings. The drive rack is slidably mounted on the bottom surface of the base plate, and the two driven gear rings are fixedly fitted onto the outer sides of the two rotating parts. The teeth on opposite sides of the drive rack mesh with the two driven gear rings, and the two inclined spray tubes are symmetrically distributed.

[0008] Optionally, the sliding seat has a U-shaped structure, with one end of the drive rack movably penetrating the outer wall of the sliding seat and extending into the inner cavity of the sliding seat. This end of the drive rack is also connected to a U-shaped retainer, with guide posts at both ends of the retainer. The outer surface of the hollow seat is provided with two retaining plates, each of which has a guide groove for the corresponding guide post to slide into. The guide groove includes a connected straight section and an inclined section from top to bottom. When the guide post is located inside the straight section, the bottom ends of the two spray pipes point obliquely downwards towards the side closer to the hollow seat. When the guide post is located at the lower end of the inclined section, the bottom ends of the two spray pipes point obliquely downwards away from the hollow seat.

[0009] Optionally, the can clamping mechanism includes two mounting seats respectively disposed on both sides of the conveying mechanism in the width direction. A displacement portion is slidably provided on the mounting seat along a vertical direction. A first cylinder is located on the back of the displacement portion away from the hollow seat. The movable end of the first cylinder passes through the displacement portion and is provided with a first elastic clamping body. A strip-shaped opening is vertically provided on the displacement portion near the hollow seat. A driven block is elastically and slidably provided within the strip-shaped opening by a spring. A second cylinder is provided on the driven block. The movable end of the second cylinder is provided with a second elastic clamping body distributed opposite to the first elastic clamping body. The mounting seat also includes a lifting drive assembly for controlling the corresponding displacement portion to perform lifting and lowering movements. A guide rod is provided at the top of the driven block. The guide rod movably passes through the top wall of the corresponding mounting seat and is provided with an iron block. An electromagnet is provided in the inner cavity of the sliding seat and directly above the iron block. Therefore, the can clamping mechanism can clamp the can and control its tilt direction.

[0010] This invention also proposes a method for graded impregnation and packaging of canned pears, using the aforementioned graded impregnation and packaging equipment for canned pears, the method comprising the following steps: The conveying mechanism continuously conveys the cans containing pears to be packaged. When the cans are conveyed directly below the spraying assembly, the conveying mechanism stops conveying. The can clamping mechanism first clamps the can and drives it to rise. Then the sliding seat carries the spraying assembly down and drives the can to tilt to one side. At this time, the liquid outlet of the spraying assembly points to the higher side of the inner cavity of the can, while the pear chunks slide to the lower side of the inner cavity of the can. The spraying assembly sprays the soaking sugar solution into the can. The spraying assembly then adjusts the direction of its outlet end to tilt the tank in the opposite direction. The outlet end of the spraying assembly still points to the higher side of the inner cavity of the tank and continues to spray. After completion, the spraying assembly rises and the tank clamping mechanism lowers the tank. The conveying mechanism continues to operate, transporting the tank to the location of the secondary filling mechanism and pausing thereafter. The secondary filling mechanism then continues to fill the sugar solution. The conveying mechanism continues to operate, transporting the can to the location of the sealing mechanism, which then performs the capping operation on the can.

[0011] Compared with the prior art, the present invention provides a graded impregnation and packaging device and method for canned pears, which has the following beneficial effects: 1. The present invention, through the cooperation of the spraying component and the tank clamping mechanism, enables the tank to tilt to one side or the other side during the first stage of filling, and makes the liquid outlet of the spraying component point to the higher side of the inner cavity of the tank. Under the action of gravity, the pear pieces tend to be located on the lower side, thereby reducing the direct impact of sugar liquid on the pear pieces and reducing the risk of fruit damage. 2. In this invention, the liquid outlet orientation of the spraying component and the tank clamping mechanism are linked together. This linkage structure can realize the switching of the spraying direction by utilizing the displacement of the sliding seat, reducing the need for additional independent driving components. Moreover, it does not require manual control or sensor-triggered control, making it not only easy to operate but also highly reliable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view of the hollow seat structure in this invention; Figure 3 This is a side view of the initial state of the primary filling mechanism of the present invention; Figure 4 This is a side view of the first filling state of the primary filling mechanism of the present invention; Figure 5 This is a side view of the second filling state of the primary filling mechanism of the present invention; Figure 6 This is a schematic diagram of the tank clamping mechanism of the present invention; Figure 7 This is a schematic diagram of an angle structure of the sliding seat of the present invention; Figure 8 This is a schematic diagram of another angle structure of the sliding seat of the present invention; Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0013] In the diagram: 100, conveying mechanism; 200, primary filling mechanism; 201, hollow seat; 202, liquid outlet pipe; 203, sliding seat; 204, sliding port; 205, slider; 206, linear drive assembly; 207, retaining plate; 208, guide groove; 2081, straight section; 2082, inclined section; 209, electromagnet; 300, secondary filling mechanism; 301, sugar solution filling nozzle; 400, sealing mechanism; 500, liquid spraying assembly; 501, seat plate; 502. Rotating part; 503, spraying inclined pipe; 504, tee pipe; 505, drive rack; 506, driven gear ring; 507, cage; 508, guide post; 600, tank clamping mechanism; 601, mounting base; 602, displacement part; 603, first cylinder; 604, first elastic clamping body; 605, strip opening; 606, driven block; 607, second cylinder; 608, second elastic clamping body; 609, lifting drive assembly; 610, guide rod; 611, iron block. Detailed Implementation

[0014] 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, and 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.

[0015] It should be noted that the pear chunks are usually cut and steamed before being canned. After steaming, the pear flesh is softer and its structural strength is reduced. If a large amount of sugar syrup is poured directly into the can from the top of the can during the filling process, the sugar syrup will act directly on the surface of the pear chunks with a large flow rate and impact force, which can easily cause the pear chunks to break, the edges to be damaged, or the surface to become fuzzy, thus affecting the appearance integrity and taste of the finished canned food.

[0016] Furthermore, the pear chunks are not arranged regularly after being placed in the jar, but rather piled up irregularly inside the jar, creating gaps of varying sizes and positions between them. If a single top-to-bottom direct filling method is used, some spaces obscured or surrounded by the pear chunks may not be fully filled with the sugar syrup in time, easily leaving air behind and forming bubbles. The presence of bubbles affects the immersion and coating of the pear chunks by the sugar syrup inside the jar, and may also adversely affect the storage stability after subsequent packaging.

[0017] To address the aforementioned problems, this application proposes the following technical solution.

[0018] Example 1: Please refer to Figure 1 - Figure 9 This application proposes a graded impregnation and packaging device for canned pears, including a conveying mechanism 100 for conveying cans containing pears to be packaged. The conveying mechanism 100 can adopt a chain conveyor structure, a belt conveyor structure, or other continuous conveying structure capable of directional conveying of the cans. It also includes a primary filling mechanism 200, a secondary filling mechanism 300, and a packaging mechanism 400 arranged sequentially along the conveying direction of the conveying mechanism 100. The primary filling mechanism 200 is used to add impregnation sugar solution to the cans to be packaged, the secondary filling mechanism 300 is used to add filling sugar solution to the cans to be packaged, and the packaging mechanism 400 is used to perform a capping operation on the cans to be packaged. The impregnation sugar solution added by the primary filling mechanism 200 can be used to pre-impregnate the pears in the cans, and the filling sugar solution added by the secondary filling mechanism 300 can be used as a replenishing liquid medium before subsequent packaging.

[0019] The primary filling mechanism 200 includes a hollow base 201, which is fixedly mounted on one side of the conveying mechanism 100 in the width direction. A liquid outlet pipe 202 is located at the top of the hollow base 201. A sliding seat 203, capable of vertical movement, is slidably mounted on the surface of the hollow base 201 and below the liquid outlet pipe 202. A spraying assembly 500 is movably mounted on the sliding seat 203. The spraying assembly 500 and the liquid outlet pipe 202 are connected by a flexible hose. The hose can deform accordingly during the lifting and swinging of the spraying assembly 500 to adapt to changes in its position. The spraying assembly 500 can swing relative to the sliding seat 203, allowing its outlet end to tilt towards both sides of the conveying mechanism 100 in the width direction, thereby adjusting the spray direction according to the tilt direction of the tank. It should be noted that the primary filling mechanism 200 also includes a sugar solution tank and a pumping assembly. The pumping assembly is used to quantitatively deliver the sugar solution from the sugar solution tank to the liquid outlet pipe 202.

[0020] A can clamping mechanism 600 is provided on the conveying mechanism 100 at a position corresponding to the primary filling mechanism 200. The can clamping mechanism 600 can clamp the can to be packaged and drive the can to be packaged to tilt to one side or the other side of the width direction of the conveying mechanism 100 around the axis extending along the conveying direction of the conveying mechanism 100. After clamping the can to be packaged, the can clamping mechanism 600 can provide limiting and posture adjustment functions for the can to be packaged so that the can to be packaged maintains a predetermined tilt posture during the primary filling process.

[0021] In this embodiment, the can clamping mechanism 600 is configured to cooperate with the spraying assembly 500, such that when the outlet end of the spraying assembly 500 points to one side of the width direction of the conveying mechanism 100, the can clamping mechanism 600 can drive the can to tilt to the other side, so that the outlet end of the spraying assembly 500 points to the higher side of the can's inner cavity. Through this cooperation, the outlet path of the spraying assembly 500 can avoid the pear pieces that accumulate on the lower side of the can's inner cavity after tilting, preventing the soaking sugar solution from directly washing over the pear pieces.

[0022] The following describes the assembly state of the sliding seat 203: A sliding opening 204 communicating with the interior of the hollow seat 201 is vertically opened on the side of the hollow seat 201 facing the conveying mechanism 100. A slider 205 is slidably embedded in the sliding opening 204 on the back of the sliding seat 203. A guiding engagement is formed between the slider 205 and the sliding opening 204 to limit the lifting trajectory of the sliding seat 203. A linear drive assembly 206 is also provided on the hollow seat 201, which controls the vertical lifting of the sliding seat 203. The linear drive assembly 206 can be a cylinder, an electric cylinder, a lead screw module, or other linear actuators. In this embodiment, the linear drive assembly 206 includes a motor, a lead screw, and a retaining block. The motor is fixedly mounted on the top surface of the hollow seat 201, the lead screw is located inside the hollow seat 201 and one end is connected to the motor output shaft, and the retaining block is threaded to the outside of the lead screw and fixedly connected to the inner end of the slider 205.

[0023] The structure of the spraying assembly 500 is described in detail below: The spraying assembly 500 includes a base plate 501, which is fixedly connected to a sliding seat 203. Two rotating parts 502 are rotatably arranged through the base plate 501. Each rotating part 502 is obliquely fitted with a spraying pipe 503. The bottom ends of the two spraying pipes 503 together form the outlet end of the spraying assembly 500. The top ends of the two spraying pipes 503 are respectively connected to a three-way pipe 504 through a hose. The other end of the three-way pipe 504 is connected to the outlet pipe 202 through a hose. Thus, the impregnation sugar solution in the outlet pipe 202 enters the three-way pipe 504 through the hose and then enters the two spraying pipes 503 respectively, and is sprayed out into the inner cavity of the tank from the bottom ends of the two spraying pipes 503. The two rotating parts 502 respectively constitute the rotation fulcrum for the corresponding spray pipe 503 to swing relative to the base plate 501, so that the two spray pipes 503 can change direction synchronously.

[0024] In this embodiment, the spraying assembly 500 further includes a drive rack 505 and two driven gear rings 506. The drive rack 505 is slidably disposed on the bottom surface of the base plate 501, and the two driven gear rings 506 are respectively fixedly sleeved on the outer sides of the two rotating parts 502. The teeth on opposite sides of the drive rack 505 mesh with the two driven gear rings 506, and the two spraying inclined pipes 503 are symmetrically distributed. The drive rack 505 is perpendicular to the outer wall of the sliding seat 203. Through the linear sliding of the drive rack 505, the two driven gear rings 506 can be synchronously driven to rotate, thereby causing the two rotating parts 502 and the corresponding spraying inclined pipes 503 to rotate synchronously. Since the two spraying inclined pipes 503 are symmetrically distributed, when the drive rack 505 reciprocates, the liquid outlet direction of the two spraying inclined pipes 503 can be switched between one side and the other side in the width direction of the conveying mechanism 100, thereby realizing the spraying of liquid to the higher side area of ​​the container under different tilt states.

[0025] Furthermore, the sliding seat 203 has a U-shaped structure. One end of the drive rack 505 moves through the outer wall of the sliding seat 203 and extends into the inner cavity of the sliding seat 203. This end of the drive rack 505 is also connected to a U-shaped retainer 507. Both ends of the retainer 507 are provided with guide posts 508. The outer surface of the hollow seat 201 is provided with two retaining plates 207. Each retaining plate 207 has a guide groove 208 for the corresponding guide post 508 to slide into. The guide groove 208 includes a straight section 2081 and an inclined section 2082 connected from top to bottom. When the guide post 508 is located inside the straight section 2081, the bottom ends of the two spray pipes 503 point to the side closer to the hollow seat 201 and downward. When the guide post 508 is located at the lower end of the inclined section 2082, the bottom ends of the two spray pipes 503 point to the side away from the hollow seat 201 and downward.

[0026] During the vertical descent of the sliding seat 203, the guide post 508 moves relative to the guide groove 208 along with the retainer 507. When the guide post 508 is within the straight section 2081, the retainer 507 experiences minimal lateral displacement relative to the hollow seat 201, and the drive rack 505 maintains its first position, with the outlet ends of the two spray pipes 503 pointing towards the side closer to the hollow seat 201. As the sliding seat 203 continues to descend, the guide post 508 enters the inclined section 2082. Under the guidance of the inclined section 2082, the retainer 507 drives the drive rack 505 to move along its length, thereby causing the two driven gear rings 506 to rotate synchronously, gradually causing the two spray pipes 503 to swing towards the side away from the hollow seat 201. Thus, the spray direction can be automatically switched using the descent motion of the sliding seat 203.

[0027] In some other embodiments of this application, the can clamping mechanism 600 includes two mounting seats 601 respectively disposed on both sides of the conveying mechanism 100 in the width direction. A displacement portion 602 is slidably disposed on the mounting seat 601 along the vertical direction. A first cylinder 603 is disposed on the back side of the displacement portion 602 located away from the hollow seat 201. The movable end of the first cylinder 603 passes through the displacement portion 602 and is provided with a first elastic clamping body 604. A strip-shaped opening 605 is opened through the displacement portion 602 located near the hollow seat 201 along the vertical direction. A driven block 606 is elastically and slidably disposed in the strip-shaped opening 605 by a spring. A second cylinder 607 is disposed on the driven block 606. A second elastic clamping body 608 is disposed on the movable end of the second cylinder 607 and is distributed opposite to the first elastic clamping body 604. The first elastic clamping body 604 and the second elastic clamping body 608 are located on opposite sides of the can to be packaged, and can move closer to each other under the drive of the first cylinder 603 and the second cylinder 607 to clamp the outer side of the can wall. The first elastic clamping body 604 and the second elastic clamping body 608 adopt an arc-shaped structure to match the outer contour of the can, and the elastic clamping bodies are made of silicone, which has good elasticity and coefficient of friction, and can stably clamp the can. In addition, the upper and lower ends of the driven block 606 have springs connected to the inner wall of the strip opening 605. In the natural state, the driven block 606 is in the centered position. The spring constant needs to be large enough to prevent large expansion and contraction due to the weight of the can. Specifically, in this embodiment, the spring constant is not less than 1000 N / m.

[0028] It should be noted that the mounting base 601 is also equipped with a lifting drive assembly 609, which is used to control the corresponding displacement part 602 to perform lifting and lowering movements. Specifically, the lifting drive assembly 609 adopts a cylinder, the cylinder body of which is fixedly installed on the top surface of the mounting base 601, and its movable end is connected to the displacement part 602 to directly drive the displacement part 602 to lift and lower.

[0029] In this embodiment, a guide rod 610 is provided at the top of the driven block 606. The guide rod 610 movably passes through the top wall of the corresponding mounting base 601 and is provided with an iron block 611. An electromagnet 209 is provided in the inner cavity of the sliding base 203 and directly above the iron block 611. When the electromagnet 209 is energized, it can generate a magnetic attraction to the iron block 611, thereby driving the guide rod 610 and the driven block 606 to move against the elastic force of the spring. Since the driven block 606 is slidably disposed in the strip-shaped opening 605, the change in the position of the driven block 606 can drive the second cylinder 607 and the second elastic clamping body 608 to move relative to the corresponding displacement part 602, thereby changing the force position of the can to be packaged on the side near the hollow base 201. In conjunction with the clamping action of the first elastic clamping body 604 on the other side, the can to be packaged can be rotated around the length direction of the conveying mechanism 100 to form a tilted posture to one side; when the electromagnet 209 is de-energized, the driven block 606 can be reset under the elastic return action of the spring, thereby allowing the can to be packaged to return to or switch to another posture.

[0030] Specifically, when the guide column 508 moves to the junction of the straight section 2081 and the inclined section 2082, the electromagnet 209 is still above the iron block 611. If the electromagnet 209 is energized, it can attract the iron block 611 and the guide rod 610 to rise. Then, the side of the tank body near the hollow seat 201 is lifted upward. At this time, the liquid outlet end of the spray pipe 503 points to the higher side of the inner cavity of the tank. When the guide column 508 moves to the middle position of the inclined section 2082, the electromagnet 209 just contacts the iron block 611. When the guide column 508 moves to the lower end of the inclined section 2082, the driven block 606 moves down under the action of downward pressure, and the tank body tilts towards the side near the hollow seat 201. At this time, the bottom end of the spray pipe 503 points diagonally downward away from the hollow seat 201, that is, towards the higher side of the inner cavity of the tank.

[0031] The secondary filling mechanism 300 includes a sugar syrup filling nozzle 301, with its outlet pointing vertically downwards and towards the upper surface of the conveying mechanism 100. The sugar syrup filling nozzle 301 is positioned above the opening of the container to be packaged, allowing for the addition of sugar syrup to the container after it moves to the secondary filling station. Compared to the directional spraying method in the primary filling mechanism 200, the secondary filling mechanism 300 can use a top-down filling method to complete the subsequent liquid addition. It should be noted that after the first filling, the pear pieces are already soaked in the sugar syrup, so the second filling can directly add sugar syrup without rinsing the pear pieces.

[0032] In this embodiment, during the secondary tilting filling process, the container to be packaged is tilted in opposite directions, and the liquid spraying assembly 500 adjusts the direction of its outlet accordingly, ensuring that the sugar solution always enters from the higher side of the container's inner cavity. Since the pear chunks tend to move to the lower side of the container's inner cavity under gravity, spraying the sugar solution from the higher side reduces the direct scouring of areas where the pear chunks are concentrated. Simultaneously, during the two tilting processes in opposite directions, the stacking posture of the pear chunks inside the container is adjusted, exposing previously obscured gaps, allowing the sugar solution to flow into these gaps in different directions under gravity. This back-and-forth tilting and multi-stage liquid injection method helps to expel air upwards from the container, reducing localized air bubble retention and allowing the sugar solution to more fully fill the container's internal space.

[0033] Example 2: Please refer to Figure 1 - Figure 9 This application also proposes a method for graded impregnation and packaging of canned pears, using the graded impregnation and packaging equipment for canned pears described in Embodiment 1 above. The method includes the following steps: First, the conveying mechanism 100 continuously conveys the can containing pears to be packaged. When the can is conveyed directly below the spraying assembly 500, the conveying mechanism 100 stops conveying. In this state, the can to be packaged is located at the first-level filling station.

[0034] Secondly, the tank clamping mechanism 600 clamps the tank and lifts it. Then, the sliding seat 203 lowers the spraying assembly 500, causing the tank to tilt to one side. At this time, the outlet of the spraying assembly 500 points to the higher side of the tank's inner cavity, while the pear blocks slide down to the lower side of the tank's inner cavity under gravity. The spraying assembly 500 sprays the impregnation sugar solution into the tank. During this process, the impregnation sugar solution can enter the tank's inner cavity from the higher side and flow downwards along the gaps between the pear blocks, thus ensuring sufficient contact between the sugar solution and the materials inside the tank. It should be noted that during the descent of the sliding seat 203, the electromagnet 209 pushes the guide rod 610 downwards until the guide column 508 enters the lower end of the inclined section 2082. At this time, the bottom ends of both spraying pipes 503 point diagonally downwards away from the hollow seat 201. Figure 4 The posture shown.

[0035] Subsequently, the spray assembly 500 adjusts the direction of its outlet end, causing the tank to tilt in the opposite direction. The outlet end of the spray assembly 500 still points towards the higher side of the tank's inner cavity and continues spraying. After completion, the spray assembly 500 rises, and the tank clamping mechanism 600 lowers the tank. Specifically, the electromagnet 209 is first energized and attracts the iron block 611. Then, the sliding seat 203 rises, carrying the driven block 606 up synchronously. Therefore, the tilting direction of the spray pipe 503 and the tank will be reversed. Figure 5 The posture shown.

[0036] That is, during a single primary filling process, the container to be sealed can be tilted in opposite directions, and the spraying assembly 500 will correspondingly change its spraying direction to spray the impregnation sugar solution into the higher areas on both sides of the inner cavity of the container, thereby facilitating the impregnation sugar solution to act on the pear blocks on different sides of the container in two stages. After the second filling is completed, the sliding seat 203 descends to the middle section of the tilting section 2082, causing the driven block 606 to return to its initial position. Then, the electromagnet 209 is de-energized, the sliding seat 203 rises to its initial position, and the container clamping mechanism 600 lowers the container.

[0037] Finally, the conveying mechanism 100 continues to operate, transporting the can to the position of the secondary filling mechanism 300 and pausing there. The secondary filling mechanism 300 then continues filling with sugar syrup. In this step, the sugar syrup filling nozzle 301 replenishes the sugar syrup into the can from above, ensuring the liquid level in the can meets the requirements for subsequent sealing. It should be noted that after the first filling, the pear pieces are already largely covered with sugar syrup; therefore, the second filling will not directly wash away the pear flesh.

[0038] The conveying mechanism 100 continues to operate, transporting the can to the sealing mechanism 400, which then performs a capping operation on the can. After capping, a relatively closed packaging state is formed, facilitating subsequent transfer or storage.

[0039] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grading, impregnation, and packaging device for canned pears, characterized in that, include: A conveying mechanism for conveying cans containing pears to be packaged; A primary filling mechanism, a secondary filling mechanism, and a sealing mechanism are sequentially arranged along the conveying direction of the conveying mechanism. The primary filling mechanism is used to add impregnation sugar solution into the container to be sealed. The secondary filling mechanism is used to add filling sugar solution into the container to be sealed. The sealing mechanism is used to perform a capping operation on the container to be sealed. The primary filling mechanism includes a hollow seat, which is fixedly disposed on one side of the conveying mechanism in the width direction. The top of the hollow seat is provided with a liquid outlet pipe. A sliding seat that can be raised and lowered is slidably disposed on the surface of the hollow seat and below the liquid outlet pipe. A liquid spraying component is movably disposed on the sliding seat. The liquid spraying component and the liquid outlet pipe are connected by a flexible hose. The liquid spraying component can swing relative to the sliding seat so that its liquid outlet end can be tilted to both sides in the width direction of the conveying mechanism. The conveying mechanism is provided with a can clamping mechanism at the position corresponding to the first-level filling mechanism. The can clamping mechanism can clamp the can to be packaged and drive the can to be packaged to tilt to one side or the other side of the width direction of the conveying mechanism around the axis extending along the conveying direction of the conveying mechanism. The tank clamping mechanism is configured to cooperate with the spraying assembly so that when the liquid outlet of the spraying assembly points to one side of the width direction of the conveying mechanism, the tank clamping mechanism can drive the tank to tilt to the other side so that the liquid outlet of the spraying assembly points to the higher side of the inner cavity of the tank.

2. The pear canning and packaging equipment according to claim 1, characterized in that: The hollow seat has a vertical sliding opening on the side facing the conveying mechanism that communicates with the interior of the hollow seat, and a slider is provided on the back of the sliding seat that is slidably embedded in the sliding opening.

3. The graded impregnation and packaging equipment for canned pears according to claim 2, characterized in that: The hollow seat is also equipped with a linear drive assembly, which is used to control the sliding seat to move vertically up and down.

4. The pear canning and packaging equipment according to claim 1, characterized in that: The spraying assembly includes a base plate, which is fixedly connected to a sliding seat. Two rotating parts are rotatably arranged through the base plate, and each rotating part is inclinedly provided with a spraying tube. The bottom ends of the two spraying tubes together form the liquid outlet of the spraying assembly. The top ends of the two spraying tubes are respectively connected to a three-way pipe through a hose. The other end of the three-way pipe is connected to the liquid outlet pipe through a hose.

5. The pear canning and packaging equipment according to claim 4, characterized in that: The spraying assembly also includes a drive rack and two driven gear rings. The drive rack is slidably disposed on the bottom surface of the base plate, and the two driven gear rings are respectively fixedly sleeved on the outer sides of the two rotating parts. The teeth on opposite sides of the drive rack mesh with the two driven gear rings respectively, and the two spraying oblique pipes are symmetrically distributed.

6. The pear canning and packaging equipment according to claim 5, characterized in that: The sliding seat has a U-shaped structure. One end of the drive rack moves through the outer wall of the sliding seat and extends into the inner cavity of the sliding seat. The end of the drive rack is also connected to a U-shaped retainer. Both ends of the retainer are provided with guide posts. The outer surface of the hollow seat is provided with two retaining plates. Each retaining plate has a guide groove for the corresponding guide post to slide into. The guide groove includes a straight section and an inclined section connected from top to bottom. When the guide post is located inside the straight section, the bottom ends of the two spray pipes point to the side closer to the hollow seat and downward. When the guide post is located at the lower end of the inclined section, the bottom ends of the two spray pipes point to the side farther away from the hollow seat and downward.

7. The pear canning and packaging equipment according to claim 6, characterized in that: The tank clamping mechanism includes two mounting seats respectively disposed on both sides of the width direction of the conveying mechanism. The mounting seats are provided with a displacement part that slides vertically. A first cylinder is provided on the back of the displacement part that is away from the hollow seat. The movable end of the first cylinder passes through the displacement part and is provided with a first elastic clamping body. A strip-shaped opening is vertically through the displacement part located near the hollow seat. A driven block is elastically and slidably disposed within the strip-shaped opening by a spring. A second cylinder is disposed on the driven block. The movable end of the second cylinder is provided with a second elastic clamping body distributed opposite to the first elastic clamping body.

8. The pear canning and packaging equipment according to claim 7, characterized in that: The mounting base is also provided with a lifting drive assembly, which is used to control the corresponding displacement part to perform lifting and lowering movements; the top of the driven block is provided with a guide rod, which moves through the top wall of the corresponding mounting base and is provided with an iron block; an electromagnet is provided in the inner cavity of the sliding seat and directly above the iron block.

9. The graded impregnation and packaging equipment for canned pears according to claim 1, characterized in that: The secondary filling mechanism includes a sugar solution filling nozzle, the outlet end of which is vertically downward and points towards the upper surface of the conveying mechanism.

10. A method for grading, impregnating, and packaging pears, characterized in that, The method using the pear grading, impregnation, and packaging equipment according to any one of claims 1-9 comprises the following steps: The conveying mechanism continuously conveys the cans containing pears to be packaged. When the cans are conveyed directly below the spraying assembly, the conveying mechanism stops conveying. The can clamping mechanism first clamps the can and drives it to rise. Then the sliding seat carries the spraying assembly down and drives the can to tilt to one side. At this time, the liquid outlet of the spraying assembly points to the higher side of the inner cavity of the can, while the pear chunks slide to the lower side of the inner cavity of the can. The spraying assembly sprays the soaking sugar solution into the can. The spraying assembly then adjusts the direction of its outlet end to tilt the tank in the opposite direction. The outlet end of the spraying assembly still points to the higher side of the inner cavity of the tank and continues to spray. After completion, the spraying assembly rises and the tank clamping mechanism lowers the tank. The conveying mechanism continues to operate, transporting the tank to the location of the secondary filling mechanism and pausing thereafter. The secondary filling mechanism then continues to fill the sugar solution. The conveying mechanism continues to operate, transporting the can to the location of the sealing mechanism, which then performs the capping operation on the can.

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