Packaging equipment for vegetable processing

Abstract

The utility model discloses packaging equipment for vegetable processing, which relates to the technical field of packaging equipment and comprises a packaging mechanism for packaging vegetables. According to the packaging equipment for vegetable processing, a mounting plate is pushed to move downwards through a first air cylinder, a heat sealing plate applies pressure to seal a port of a packaging film, at the moment, only the left side port is opened, then nitrogen in a nitrogen tank is pumped into an air outlet pipe through an air pump and blown out, and at the moment, the nitrogen is filled into the packaging film from the left side port of the packaging film; the packaging bag is filled with a large amount of nitrogen, so that the respiration and oxidation speed of the vegetables are slowed down, the fresh-keeping period of the vegetables is prolonged, and the packaging bag is properly supported by the internal gas, so that the packaging bag keeps a certain shape and an internal space, and the packaging bag is convenient to use. The packaging bag is prevented from collapsing, and damage to the vegetables caused by external pressure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically a packaging equipment for vegetable processing. Background Technology

[0002] In modern society, with the improvement of people's living standards and the increasing emphasis on healthy eating, the consumption of vegetables is constantly increasing. The vegetable industry is also growing stronger, gradually developing from traditional small-scale planting and sales to large-scale, industrialized operations. In order to meet the market's demand for fresh, hygienic, and convenient vegetable products, efficient vegetable packaging equipment is needed to achieve rapid packaging and distribution of vegetables.

[0003] In the prior art, such as Chinese patent CN220315387U, a packaging device for vegetable processing is disclosed. In this utility model, the vegetables are pushed upward by starting a cylinder, wrapped with plastic wrap by a packaging bracket, and then transported to one side of the workbench. Then, a hydraulic cylinder is started to push the vegetables onto the upper surface of the weighing platform for weighing via a push plate. This can reduce the damage caused by the vegetables falling, and at the same time, the packaged vegetables can be weighed for easy sale later.

[0004] In the aforementioned patent, although the device can package and weigh vegetables, the internal gas composition of traditional packaging bags is complex under natural conditions, containing a large amount of oxygen and other gases that are not conducive to the preservation of vegetables. This will accelerate the respiration and oxidation of vegetables, causing them to quickly lose freshness and shorten their shelf life. Furthermore, when the packaging bags are stacked, the vegetables inside are easily squeezed, which can lead to damage. Therefore, this utility model provides a packaging device for vegetable processing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a packaging device for vegetable processing. It solves the problems that, under natural conditions, traditional packaging bags contain complex internal gas compositions, including a large amount of oxygen and other gases that are detrimental to vegetable preservation. These gases accelerate the respiration and oxidation of vegetables, causing them to quickly lose freshness and shorten their shelf life. Furthermore, when packaging bags are stacked, the vegetables inside are easily compressed, leading to damage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a packaging device for vegetable processing, comprising a packaging mechanism for packaging vegetables, wherein the packaging mechanism includes:

[0007] Conveying assembly for transporting vegetables;

[0008] A wrapping assembly used to shape the packaging film;

[0009] A heat sealing assembly for sealing a packaging film;

[0010] An inflation assembly for inflating a packaging bag, the inflation assembly comprising a nitrogen tank, a gas inlet pipe being provided at an outlet of the nitrogen tank, a gas pump being provided at one end of the gas inlet pipe, and an outlet pipe being provided at an outlet of the gas pump;

[0011] A detection assembly for detecting a sealing state of the packaging bag, the detection assembly comprising a mounting frame and photoelectric sensors, the photoelectric sensors being provided downstream of the mounting frame and in a number of two, a second cylinder being mounted at a top of the mounting frame, a telescopic end of the second cylinder penetrating through the top of the mounting frame and extending downward, a connecting plate being mounted at the telescopic end of the second cylinder, a plurality of springs being fixedly connected at a bottom of the connecting plate, and a pressing plate being fixedly connected between bottom ends of the plurality of springs.

[0012] Preferably, the conveying assembly comprises a feeding conveyor, a packaging conveyor being provided downstream of the feeding conveyor, a rack being mounted at an outer side of the packaging conveyor, and a discharging conveyor being provided downstream of the packaging conveyor.

[0013] Preferably, the film wrapping assembly comprises a packaging film roll, a U-shaped guide plate, and a gathering plate, the packaging film roll being provided at a position between the feeding conveyor and the packaging conveyor, the U-shaped guide plate being mounted at an outer surface of the packaging conveyor by a support and extending toward the feeding conveyor, and the U-shaped guide plate being located above the packaging film roll, and the gathering plate being mounted at a top of the rack by a plurality of connecting rods.

[0014] Preferably, the heat sealing assembly comprises a motor, an annular electric heating plate, a first cylinder, and a support plate, the motor being provided in a number of two and symmetrically mounted at inner top portions of the rack, an output shaft of the motor being mounted with a heat sealing roller, an outer side of the heat sealing roller being provided with the annular electric heating plate, the annular electric heating plate being mounted at an inner wall of the rack by a cross bar, the first cylinder being mounted at a position near the right side of the top of the rack, a telescopic end of the first cylinder movably penetrating through the top of the rack and extending downward, the telescopic end of the first cylinder being mounted with a mounting plate, the mounting plate being symmetrically mounted with heat sealing plates at a bottom thereof, a cutter being mounted at the bottom of the heat sealing plates at a position between the two mounting plates, the support plate being provided with a cutter accommodating slot at a top thereof, and the support plate being mounted at a right surface of the packaging conveyor by a support.

[0015] Preferably, the gas pump is fixedly mounted at the top of the rack, and an outlet of the outlet pipe is provided at an inner side of the gathering plate.

[0016] Preferably, the mounting frame is mounted at one side outer wall of the discharging conveyor, and the two photoelectric sensors are symmetrically mounted at the outer wall of the discharging conveyor, one of the photoelectric sensors being a light emitting end, and the other photoelectric sensor being a light receiving end.

[0017] Advantages

[0018] The utility model provides a packing plant for vegetable processing. Compared with prior art, it has the following advantages:

[0019] (1), this packing plant for vegetable processing, through first air cylinder promotes the descending of mounting plate, makes the heat seal board to pack the film port pressure seal, only left port is open at this time, then through the air pump nitrogen tank nitrogen is extracted to the outlet pipe and blows out, at this time, nitrogen will fill to the inside from the left port of packing film, immediately left port is transported to the heat seal board below and seals, thereby forms the sealed packing bag, and packing bag inside has a large amount of nitrogen, thereby slows down the respiration and oxidation rate of vegetables, prolongs the fresh -keeping period of vegetables, and the gas in the inside will pack the packing bag moderately and rise, makes it keep certain shape and internal space, avoids packing bag collapse, reduces the damage of external pressure to vegetables.

[0020] (2), this packing plant for vegetable processing, through the second air cylinder promotes the pressure plate to pack the bag pressure, if seals well, spring contracts, the pressure plate does not continue to move, if the sealing is poor, nitrogen is extruded and packing bag collapses. After packing bag reaches the photoelectric sensor, one emits light one receives light, is shielded and indicates that packing bag does not deform and can circulate, is not shielded and indicates that packing bag collapses and is defective product, simultaneously, signal feedback to control host computer and alarm reminds staff to handle. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional appearance schematic view of the utility model;

[0022] Figure 2 It is the rack section view of the utility model;

[0023] Figure 3 It is the film assembly three-dimensional appearance schematic view of the utility model;

[0024] Figure 4 It is the heat seal assembly three-dimensional appearance schematic view of the utility model;

[0025] Figure 5 It is the detection assembly three-dimensional appearance schematic view of the utility model.

[0026] As shown in the figure: 1, conveying assembly; 11, feeding conveyor; 12, packaging conveyor; 13, discharging conveyor; 14, rack; 2, film wrapping assembly; 21, packaging film roll; 22, U-shaped guide plate; 23, converging plate; 3, heat sealing assembly; 31, motor; 32, heat sealing roller; 33, annular electric heating plate; 34, first air cylinder; 35, mounting plate; 36, heat sealing plate; 37, cutter; 38, support plate; 39, cutter slot; 4, inflation assembly; 41, nitrogen tank; 42, air inlet pipe; 43, air pump; 44, air outlet pipe; 5, detection assembly; 51, mounting frame; 52, second air cylinder; 53, connecting plate; 54, spring; 55, pressing plate; 56, photoelectric sensor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The present application provides two technical solutions:

[0029] Figures 1-5 A first embodiment is shown: a packaging device for vegetable processing, comprising a packaging mechanism for packaging vegetables, the packaging mechanism comprising:

[0030] The conveying assembly 1 is used for conveying vegetables;

[0031] The film wrapping assembly 2 is used for shaping the packaging film;

[0032] The heat sealing assembly 3 is used for sealing the packaging film;

[0033] The inflation assembly 4 is used for inflating the packaging bag, and the inflation assembly 4 comprises a nitrogen tank 41, an air inlet pipe 42 is arranged at the air outlet of the nitrogen tank 41, one end of the air inlet pipe 42 is provided with an air pump 43, and the air outlet of the air pump 43 is provided with an air outlet pipe 44;

[0034] The detection assembly 5 is used for detecting the sealing state of the packaging bag, and comprises a mounting frame 51 and photoelectric sensors 56. The photoelectric sensors 56 are arranged downstream of the mounting frame 51 and are provided in a number of two. A second air cylinder 52 is mounted on the top of the mounting frame 51. The telescopic end of the second air cylinder 52 extends downward through the top of the mounting frame 51. A connecting plate 53 is mounted on the telescopic end of the second air cylinder 52. A plurality of springs 54 are fixedly connected to the bottom of the connecting plate 53. A pressing plate 55 is fixedly connected between the bottom ends of the springs 54. The pressing plate 55 can be driven by the second air cylinder 52 to move up and down. The conveying assembly 1 comprises a feeding conveyor 11. A packaging conveyor 12 is arranged downstream of the feeding conveyor 11. A rack 14 is mounted on the outer side of the packaging conveyor 12. A discharging conveyor 13 is arranged downstream of the packaging conveyor 12. A control host and an alarm electrically connected with the photoelectric sensors 56 are further mounted on the rack 14. The control host and the alarm are used for analyzing and processing signals and emitting a buzzing sound to remind the staff to timely handle abnormal conditions when an abnormal condition is found. The film wrapping assembly 2 comprises a packaging film roll 21, a U-shaped guide plate 22 and a gathering plate 23. The packaging film roll 21 is arranged at a position between the feeding conveyor 11 and the packaging conveyor 12. The U-shaped guide plate 22 is mounted on the outer surface of the packaging conveyor 12 through a support and extends toward the feeding conveyor 11. The U-shaped guide plate 22 is located above the packaging film roll 21. The gathering plate 23 is mounted on the top of the rack 14 through a plurality of connecting rods. The U-shaped guide plate 22 is used for guiding the packaging film from a planar state to a U-shaped posture. The gathering plate 23 is in a left-wide right-narrow posture, and is used for guiding the packaging film from the U-shaped posture to an O-shaped posture.

[0035] Figures 1-5The second embodiment is shown, and the main difference with the first embodiment is that the heat sealing assembly 3 comprises two electric machines 31 symmetrically installed on the inner top of the frame 14, the output shaft of the electric machine 31 is provided with a heat sealing roller 32, the outer side of the heat sealing roller 32 is provided with an annular electric heating plate 33, the annular electric heating plate 33 is installed on the inner wall of the frame 14 through a cross bar, a first air cylinder 34 is installed on the top of the frame 14 near the right side, the telescopic end of the first air cylinder 34 penetrates through the top of the frame 14 and extends downward, the telescopic end of the first air cylinder 34 is provided with a mounting plate 35, the bottom of the mounting plate 35 is symmetrically provided with a heat sealing plate 36, the bottom of the heat sealing plate 36 is provided with a cutter 37, the top of the support plate 38 is provided with a cutter accommodating slot 39, the support plate 38 is installed on the right surface of the packaging conveyor 12 through a support, the annular electric heating plate 33 does not contact the heat sealing roller 32, but can conduct heat to the heat sealing roller 32, so as to facilitate the edge sealing of the O-shaped packaging film, the cutter 37 can avoid direct contact or interference with the support plate 38 through the cutter accommodating slot 39, the air pump 43 is fixedly installed on the top of the frame 14, the air outlet of the air outlet pipe 44 is arranged on the inner side of the converging plate 23, the mounting bracket 51 is installed on one side of the outer wall of the discharging conveyor 13, and two photoelectric sensors 56 are symmetrically installed on the outer wall of the discharging conveyor 13, one of the photoelectric sensors 56 is a light emitting end, and the other photoelectric sensor 56 is a light receiving end.

[0036] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0037] When working, the whole roll of packaging film is installed on the roll of packaging film material roller 21, and is pulled out to lay on the U-shaped guide plate 22 and the transmission belt of the packaging conveyor 12. Since the width of the packaging film is greater than the overall width of the U-shaped guide plate 22, when the packaging film is on the U-shaped guide plate 22, it is in a U-shaped posture. At this time, the vegetables are placed on the feeding conveyor 11 and are conveyed downstream. When conveyed to the packaging conveyor 12, the weight of the vegetables will press on the packaging film, generating a friction force to pull the packaging film to move downstream. When the packaging film comes to the position of the gathering plate 23, the packaging film will gradually change to an O-shaped posture until the two edges are reattached and the vegetables are covered in the packaging film. Then the heat sealing roller 32 is heated by the annular electric heating plate 33, and then the two heat sealing rollers 32 are driven to rotate in opposite directions by the two motors 31. At this time, the packaging film in an O-shaped posture is edge sealed. With the vegetables continuing to convey downstream, the mounting plate 35 is pushed downward by the first air cylinder 34 to press the port of the O-shaped packaging film. When the heat sealing plate 36 contacts the supporting plate 38, one port of the packaging film can be sealed. At this time, only the left port of the packaging film is in an open state. Then the nitrogen gas in the nitrogen gas tank 41 is pumped out of the exhaust pipe 44 by the air pump 43 and blown out. At this time, the nitrogen gas will fill the inside from the left port of the packaging film. Immediately, the left port is conveyed to the lower part of the heat sealing plate 36 to be sealed, thereby forming a sealed packaging bag, and there is a large amount of nitrogen gas in the packaging bag, thereby slowing down the respiration and oxidation speed of the vegetables, prolonging the preservation period of the vegetables, and the internal gas will moderately support the packaging bag, so that it maintains a certain shape and internal space, avoiding the collapse of the packaging bag and reducing the damage to the vegetables caused by external pressure. At the same time of sealing, the cutter 37 can cut the front and rear two packaging bags. When the packaging bag is conveyed to the discharge conveyor 13 and comes to the lower part of the pressing plate 55, the pressing plate 55 is pushed downward by the second air cylinder 52 to press the packaging bag. If the sealing effect of the packaging bag is good and there is no gas leakage, the spring 54 will contract under the reaction force, and the pressing plate 55 will not continue to move downward. If the sealing of the packaging bag is poor, the process of the pressing plate 55 pressing will squeeze the nitrogen gas in the packaging bag out, and the packaging bag will also collapse. Then, when the packaging bag is conveyed to the position of the photoelectric sensor 56, one photoelectric sensor 56 emits light, and the other photoelectric sensor 56 receives light. When the light is blocked, it means that the packaging bag has not deformed and can continue to circulate. When the light is not blocked, it means that the packaging bag has collapsed and is a defective product. The signal is fed back to the control host and an alarm is given to remind the staff to handle it.

[0038] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A vegetable processing packaging apparatus comprising a packaging mechanism for packaging vegetables, characterized by: The packaging mechanism comprises: a conveying assembly (1) for conveying vegetables; a film shaping assembly (2) for shaping a packaging film; a heat sealing assembly (3) for sealing the packaging film; an inflation assembly (4) for inflating the packaging bag, the inflation assembly (4) comprising a nitrogen tank (41), an air inlet pipe (42) being arranged at an air outlet of the nitrogen tank (41), one end of the air inlet pipe (42) being provided with an air pump (43), and an air outlet pipe (44) being arranged at an air outlet of the air pump (43); a detection assembly (5) for detecting the sealing state of the packaging bag, the detection assembly (5) comprising a mounting frame (51) and photoelectric sensors (56), the photoelectric sensors (56) being arranged downstream of the mounting frame (51) and in a number of two, a second air cylinder (52) being mounted at the top of the mounting frame (51), the telescopic end of the second air cylinder (52) penetrating through the top of the mounting frame (51) and extending downward, a connecting plate (53) being mounted at the telescopic end of the second air cylinder (52), a plurality of springs (54) being fixedly connected at the bottom of the connecting plate (53), and a pressing plate (55) being fixedly connected between the bottom ends of the plurality of springs (54).

2. The packaging apparatus for processing vegetables according to claim 1, characterized in that: The conveying assembly (1) comprises a feeding conveyor (11), a packaging conveyor (12) being arranged downstream of the feeding conveyor (11), a rack (14) being mounted at the outer side of the packaging conveyor (12), and a discharging conveyor (13) being arranged downstream of the packaging conveyor (12).

3. A packaging apparatus for vegetables as claimed in claim 2, wherein: The film shaping assembly (2) comprises a packaging film roll (21), a U-shaped guide plate (22), and a gathering plate (23), the packaging film roll (21) being arranged at a position between the feeding conveyor (11) and the packaging conveyor (12), the U-shaped guide plate (22) being mounted on the outer surface of the packaging conveyor (12) by a support and extending towards the feeding conveyor (11), and the U-shaped guide plate (22) being located above the packaging film roll (21), and the gathering plate (23) being mounted on the top of the rack (14) by a plurality of connecting rods.

4. A packaging apparatus for vegetables as claimed in claim 3, wherein: Said heat sealing assembly (3) comprises motors (31), annular electric heating plates (33), first air cylinders (34) and support plates (38), the number of the motors (31) is two and they are symmetrically installed on the inner top of the frame (14), the output shafts of the motors (31) are installed with heat sealing rollers (32), the outer side of the heat sealing rollers (32) is provided with annular electric heating plates (33), the annular electric heating plates (33) are installed on the inner wall of the frame (14) through cross bars, the first air cylinders (34) are installed on the top of the frame (14) near the right side, the telescopic end of the first air cylinders (34) is movably penetrated through the top of the frame (14) and extends downward, the telescopic end of the first air cylinders (34) is installed with mounting plates (35), the bottom of the mounting plates (35) is symmetrically installed with heat sealing plates (36), the bottom of the heat sealing plates (36) is installed with cutters (37) between the two mounting plates (35), the top of the support plates (38) is provided with cutter accommodating grooves (39) for accommodating the cutters (37), and the support plates (38) are installed on the right surface of the packaging conveyor (12) through supports.

5. The packaging apparatus for processing vegetables according to claim 3, characterized in that: Said air pump (43) is fixedly installed on the top of the frame (14), and the air outlet of the air outlet pipe (44) is arranged on the inner side of the converging plate (23).

6. The packaging apparatus for processing vegetables according to claim 2, wherein: Said mounting frames (51) are installed on one side outer wall of the discharging conveyor (13), two said photoelectric sensors (56) are symmetrically installed on the outer wall of the discharging conveyor (13), one of the photoelectric sensors (56) is a light ray emitting end, and the other photoelectric sensor (56) is a light ray receiving end.

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