Fruit packaging equipment and method capable of automatically opening packaging net cover

Abstract

The invention relates to the technical field of packaging objects, in particular to fruit packaging equipment capable of automatically opening a packaging net cover and a packaging method.The fruit packaging equipment comprises a shaping and opening device installed below a net cover feeder, and is characterized in that the shaping and opening device comprises a net supporting device arranged below the net cover feeder; a conveying device for conveying fruits is installed below the net supporting device, a hot-pressing molding device is installed between the conveying device and the net supporting device and comprises a two-way ball screw sliding table which is horizontally arranged, and two movable installation rails are installed at the movable end of the two-way ball screw sliding table; and a plurality of groups of hot-pressing assemblies are mounted on each movable mounting rail. The packaging quality can be effectively improved, and the economic loss can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of packaging technology, specifically to a fruit packaging device and method that automatically opens the packaging mesh sleeve. Background Technology

[0002] Currently, to reduce damage to fruit during transportation caused by collisions and compression, bagging is a common packaging method. Specifically, foam netting is usually placed over the surface of the fruit to provide protection and reduce the spoilage rate. Chinese Patent No. CN115783413B discloses a fruit netting support assembly and a fruit packaging device. The fruit netting support assembly includes a suction cup assembly and a support plate assembly. The support plate assembly includes two opposing support plates. The upper, middle, and lower parts of the support plates are, respectively, an upper support plate, a middle support plate, and a lower support plate. The width of the upper support plate is smaller than the width of the middle support plate, and the width decreases as the distance from the middle of the upper support plate increases. Similarly, the width of the lower support plate is smaller than the width of the middle support plate, and the width decreases as the distance from the middle of the lower support plate increases. The support plates have a concave structure, with a concave inner surface and a convex outer surface. The fruit packaging device includes the fruit netting support assembly. In this design, the foamed net can easily recover its deformation after stretching in a short time, and the two ends of the foamed net are more easily wrapped around the fruit, improving the firmness and protective effect of the foamed net when placed on the fruit.

[0003] The aforementioned technical solution, through the width differences between the upper, middle, and lower parts of the support plate and its concave structural design, can create a tapered shape at both ends when the foam net is stretched, thereby improving the wrapping effect of the foam net to a certain extent. This design helps reduce the degree of stretching during fruit packing, allowing the foam net to better conform to the fruit surface. However, in actual use, especially during fruit transportation, the problem of fruit falling out of the foam net still occurs. Fallen fruit not only leads to economic losses, but more importantly, these fruits are highly susceptible to damage after falling out, thus affecting fruit quality and market competitiveness. Summary of the Invention

[0004] To address the aforementioned issues, this paper provides a fruit packaging equipment and packaging method that automatically expands the packaging netting. The shaping and expanding device can effectively improve packaging quality and reduce economic losses.

[0005] To address the problems of the existing technology, the present invention provides the following technical solution: A fruit packaging device that automatically expands the packaging netting includes a frame, a conveying component for conveying fruit mounted on the frame, and a netting support component mounted on the frame and located directly above the conveying component for expanding the netting and placing it over the fruit. The net support assembly includes two support plates arranged in the front-to-back direction, a rotating platform rotatably mounted on the two support plates, a mounting bracket, and a synchronous opening assembly. The mounting bracket can move back and forth along a diameter of the rotating platform, and the synchronous opening assembly is mounted on the mounting bracket for opening the net and placing it on the fruit. The synchronous expansion assembly includes multiple limiting mounting plates and multiple sets of expansion support plates distributed on the mounting bracket. The multiple limiting mounting plates are installed at equal intervals along the front-to-back direction on the lower surface of the mounting bracket. A through hole is provided on the mounting bracket corresponding to the position of each limiting mounting plate. Multiple strip grooves are provided at equal angles to the center of the corresponding through hole on each limiting mounting plate, and each strip groove is located on a diameter of the through hole. A set of expansion support plates corresponds to one limiting mounting plate, and the number of expansion support plates in each set is equal to the number of strip grooves on the corresponding limiting mounting plate. The upper end of each limiting mounting plate is slidably disposed in a strip groove. When the expansion support plate moves outward along the strip groove, it can expand the mesh sleeve.

[0006] Preferably, the synchronous expansion assembly further includes an expansion mechanism for driving the expansion support plate to move back and forth. The expansion mechanism includes multiple connecting blocks and multiple expansion rods. A connecting block is provided directly above each through hole. Each connecting block 2 is connected to the corresponding expansion support plate through the expansion rod. One end of the expansion rod is hinged to the connecting block, and the other end is hinged to the corresponding expansion support plate. When the connecting block moves up and down, the expansion support plate can be moved back and forth. Multiple connecting blocks are connected by a synchronous connecting rod. By controlling the up and down movement of the synchronous connecting rod, the synchronous operation of multiple sets of expansion support plates can be achieved.

[0007] Preferably, the support assembly further includes a pushing assembly for pushing the net sleeve down from the expansion support plate. The pushing assembly includes multiple pushing sleeves, with one pushing sleeve corresponding to each set of expansion support plates. Each pushing sleeve is fitted onto a corresponding set of expansion support plates, and the pushing sleeve can move up and down. Multiple push rods are arranged at equal angles inside the pushing sleeves, and each expansion support plate is provided with a vertically extending through slot. The push rods pass through the corresponding through slots. When the pushing sleeve moves downward, the push rods can push the net sleeve on the expansion support plate downward. The inner ends of multiple push rods corresponding to the same set of expansion support plates are set on the same push rod. The push rod is set vertically, and the upper ends of multiple push rods are connected to the same push plate. By controlling the up and down movement of the push plate, the net sleeve can be pushed out.

[0008] Preferably, each rotating platform is provided with a slide groove, the slide groove is located on a diameter of the rotating platform, the openings of the slide grooves on the two rotating platforms are arranged opposite to each other, and a slide table is provided on each slide groove, the slide table can slide back and forth along the slide groove; the two ends of the mounting bracket are respectively connected to the corresponding slide table; each set of expansion support plates forms a complete cylindrical structure in the contracted state.

[0009] Preferably, it also includes a hot-pressing plastic component for hot-pressing both ends of the netting after it is placed on the fruit; the hot-pressing component includes multiple hot-pressing heads, with each set of expansion plates corresponding to four hot-pressing heads, and the four hot-pressing heads forming a pair to heat and melt the upper and lower ends of the netting respectively. Each of the hot press heads includes a heating block and an abutment sleeve, the abutment sleeve being a hollow structure, the heating block being able to be inserted into the abutment sleeve from the end of the abutment sleeve away from the expansion support plate and being able to be exposed from the end of the abutment sleeve closer to the expansion support plate.

[0010] Preferably, guide posts are provided on the front and rear sides of the contact sleeve, the guide posts are located at the end of the contact sleeve away from the expansion support plate, the end of the guide post away from the contact sleeve passes through the heating block, the guide post can slide relative to the heating block, and a limit nut is provided at the end of the guide post away from the contact sleeve. A spring is provided on the part of the guide post located between the contact sleeve and the heating block, the spring is always in a compressed state so that the heating block always has the tendency to extend from the end of the contact sleeve away from the expansion support plate.

[0011] Preferably, the hot-pressing plastic assembly further includes two synchronous adjustment components for adjusting the height of multiple hot press heads. The two synchronous adjustment components are respectively disposed on both sides of the expansion support plate. Each synchronous adjustment component includes a movable mounting frame and multiple guide rods. Each heating block is slidably disposed on a corresponding guide rod. Two heating blocks aligned in the vertical direction share the same guide rod. The synchronous adjustment component also includes linkage rods. Each heating block corresponds to one linkage rod. The ends of two linkage rods corresponding in the vertical direction that are away from the heating block are hinged to the same hinge block. Each hinge block is provided with a telescopic adjustment rod. The end of the telescopic adjustment rod away from the hinge block extends into the side of the movable mounting frame opposite to the hinge block. The ends of multiple telescopic adjustment rods away from the hinge block are fixed to the same linkage plate. An adjustment screw is threadedly connected to the linkage plate. One end of the adjustment screw is rotatably disposed on the movable mounting frame.

[0012] Preferably, the conveying assembly includes a chain plate conveyor, on which multiple feeding plates are installed. The chain plate conveyor is used to drive the multiple feeding plates to move along the conveying direction. Each feeding plate is provided with multiple limiting discharge holes, and the limiting discharge holes 1 are used to place fruit. The conveying assembly also includes a lifting assembly, which includes a vertically movable lifting push plate located directly below the synchronous spreading assembly. The lifting push plate is provided with multiple inserting posts, and each inserting post is provided with a limiting suction cup at its top. The limiting suction cup is used to adsorb and fix the fruit. One inserting post is provided directly below each set of expansion support plates. The number of inserting posts is the same as the number of limiting discharge holes on each feeding plate and corresponds one-to-one. The inserting posts can be inserted into the limiting discharge holes.

[0013] The present invention also provides a fruit packaging method, which specifically includes the following steps: Step 1: Place the fruit onto the limiting discharge hole of the feeding plate of the conveying component; Step 2: The conveyor assembly moves the fruit directly under the expansion support plate; Step 3: Place the expansion support plate facing upwards and put on the mesh cover; Step 4: After expanding the expansion plate outwards, rotate it 180° so that the expansion plate faces downwards; Step 5: Move the expansion support plate downwards a certain distance, and move the insertion column downwards a certain distance, so that the fruit is located inside the expansion support plate; Step 6: The pushing component pushes the mesh sleeve downwards while the expansion support plate moves upwards until the mesh sleeve disengages from the expansion support plate. Step 7: Move the heating heads on both sides of the fruit a certain distance towards each other, heat-press the upper and lower ends of the netting, and then move the heating heads away from each other.

[0014] The advantages of this invention compared to the prior art are: This invention enables the automatic netting of fruits. Attached Figure Description

[0015] Figure 1 This is a perspective view of a fruit packaging device that automatically expands the packaging netting according to the present invention.

[0016] Figure 2 This is a front view of a fruit packaging device that automatically expands the packaging netting according to the present invention.

[0017] Figure 3 This is a three-dimensional schematic diagram of the thermoforming device in a fruit packaging equipment that automatically expands the packaging netting according to the present invention.

[0018] Figure 4 This is a front view of the thermoforming device in a fruit packaging equipment that automatically expands the packaging netting according to the present invention.

[0019] Figure 5 yes Figure 4 A planar sectional perspective of section AA1.

[0020] Figure 6This is a three-dimensional schematic diagram of a multi-segment hot press head in a fruit packaging device that automatically expands the packaging netting according to the present invention.

[0021] Figure 7 This is a three-dimensional schematic diagram of the mesh-supporting device in a fruit packaging equipment that automatically expands the packaging mesh sleeve according to the present invention.

[0022] Figure 8 yes Figure 7 A magnified view of a section at point B in the middle.

[0023] Figure 9 This is a three-dimensional schematic diagram of the structure of the mesh-supporting device in a fruit packaging equipment that automatically expands the packaging mesh sleeve according to the present invention.

[0024] Figure 10 This is a perspective view of the conveying device in a fruit packaging equipment that automatically expands the packaging netting according to the present invention.

[0025] The numbers on the map are: Detailed Implementation

[0026] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0027] See Figures 1 to 10 As shown, a fruit packaging device that automatically opens the packaging netting includes a frame (not shown), a conveying component 4 for conveying fruit mounted on the frame, and a netting support component 3 for opening the netting and placing it on the fruit mounted on the frame and located directly above the conveying component 4.

[0028] The net support assembly 3 includes two support plates 311 arranged along the front-back direction, a rotating platform 31 rotatably mounted on the two support plates 311, a mounting bracket 32, and a synchronous opening assembly 33. The mounting bracket 32 ​​can move back and forth along a diameter of the rotating platform 31. The synchronous opening assembly 33 is mounted on the mounting bracket 32 ​​and is used to open the net cover 11 and put it on the fruit 1.

[0029] The synchronous expansion assembly 33 includes multiple limiting mounting plates 331 and multiple sets of expansion support plates 332 distributed on the mounting bracket 32. The multiple limiting mounting plates 331 are installed at equal intervals along the front-back direction on the lower surface of the mounting bracket 32. A through hole is provided on the mounting bracket 32 ​​corresponding to the position of each limiting mounting plate 331. Multiple strip grooves 3311 are provided at equal angles to the center of the corresponding through hole on each limiting mounting plate 331. Each strip groove 3311 is located on a diameter of the through hole. A set of expansion support plates 332 corresponds to one limiting mounting plate 331. The number of expansion support plates 332 in each set is equal to the number of strip grooves 3311 on the corresponding limiting mounting plate 331. The upper end of each limiting mounting plate 331 is slidably disposed in a strip groove 3311. When the expansion support plate 332 moves outward along the strip groove 3311, it can expand the mesh sleeve 11.

[0030] The synchronous expansion assembly 33 also includes an expansion mechanism 333 for driving the expansion support plate 332 to move back and forth. The expansion mechanism 333 includes multiple connecting blocks 3332 and multiple expansion rods 3331. A connecting block 3332 is positioned directly above each through hole. Each connecting block 3332 is connected to its corresponding expansion support plate 332 via the expansion rod 3331. One end of the expansion rod 3331 is hinged to the connecting block 3332, and the other end is hinged to the corresponding expansion support plate 332. When the connecting block 3332 moves up and down, it enables the expansion support plate 332 to move back and forth. Furthermore, the multiple connecting blocks 3332 are connected by a synchronous connecting rod 3334. By controlling the up and down movement of the synchronous connecting rod 3334, the synchronous operation of multiple sets of expansion support plates 332 can be achieved. The synchronous connecting rod 3334 is driven by a first cylinder 3335.

[0031] The support assembly 3 further includes a pushing assembly 34 for pushing the net sleeve 11 off the expansion support plate 332. The pushing assembly 34 includes multiple pushing sleeves 341, with one pushing sleeve 341 corresponding to each set of expansion support plates 332. Each pushing sleeve 341 is fitted onto its corresponding set of expansion support plates 332 and can move up and down. Multiple push rods 3411 are equidistantly arranged inside the pushing sleeve 341. Each expansion support plate 332 has a vertically extending through slot 3321 through which the push rods 3411 pass. When the pushing sleeve 341 moves downward, the push rods 3411 can push the net sleeve 11 on the expansion support plate 32 downward. Because the pushing sleeve 341 is on the outside, it reduces the probability of wrinkles in the net sleeve 11, ensuring that the net sleeve 11 can be smoothly pushed off.

[0032] The inner ends of multiple push rods 3411 corresponding to the same set of expansion support plates 32 are set on the same push rod 342. The push rod 342 is vertically arranged, and the upper ends of the multiple push rods 342 are connected to the same push plate 3421. By controlling the up and down movement of the push plate 3421, the net sleeve 11 can be pushed out. The push plate 3421 is driven by a second cylinder 343. Furthermore, the connecting block 3332 is slidably set on the corresponding push rod 342.

[0033] Each rotating platform 31 is provided with a slide groove 312, which is located on a diameter of the rotating platform 31. The openings of the slide grooves on the two rotating platforms 31 are arranged opposite each other. Each slide groove 312 is provided with a slide table 313, which can slide back and forth along the slide groove 312. The two ends of the mounting bracket 32 ​​are respectively connected to the corresponding slide table 313. By rotating, the expansion support plate 332 can be made to face upward, making it convenient for workers to put the net sleeve 11 on the expansion support plate 332. The net sleeve 11 can be fed automatically or manually. In the retracted state, each set of expansion support plates 332 forms a complete cylindrical structure, which facilitates the putting of the net sleeve 11 onto the expansion support plate 332.

[0034] After the netting 11 is placed on the expansion support plate 332, it is rotated so that the expansion support plate 332 faces downward. When the fruit moves directly under the expansion support plate 332, the expansion support plate 332 moves downward to place the fruit inside the expansion support plate 332. Then, the push plate 3421 moves downward to push the netting 11 downward. At the same time, the mounting bracket 32 ​​moves upward at a certain speed to keep the position of the fruit and the netting unchanged in the vertical direction as much as possible.

[0035] The equipment also includes a hot-pressing plastic component 2, which is used to hot-press both ends of the net sleeve 11 after it is put on the fruit 1, so as to ensure the stability of the net sleeve 11 after it is put on the fruit 1.

[0036] The hot-pressing assembly 23 includes multiple hot-pressing heads 231. Each set of expansion support plates 332 corresponds to four hot-pressing heads 231. The four hot-pressing heads 231 are paired up and heat and melt the upper and lower ends of the mesh sleeve 11 respectively. After melting, the two ends of the mesh sleeve 11 are bonded together to seal both ends of the mesh sleeve 11. In actual production, it is not necessary to bond them very tightly.

[0037] Each of the hot press heads 231 includes a heating block 2312 and a contact sleeve 2311. The contact sleeve 2311 has a hollow structure. In the left-right direction, the heating block 2312 can be inserted into the contact sleeve 2311 from the end of the contact sleeve 2311 away from the expansion support plate 332 and can be exposed from the end of the contact sleeve 2311 near the expansion support plate 332. Preferably, guide posts 2314 are respectively provided on the front and rear sides of the contact sleeve 2311. The guide posts 2314 are located at the end of the contact sleeve 2311 away from the expansion support plate 332. The end of the guide post 2314 away from the contact sleeve 2311 passes through the heating block 2312. The guide post 2314 can slide relative to the heating block 2312 and a limit nut (not shown) is provided at the end of the guide post 2314 away from the contact sleeve 2311. A spring 2313 is provided on the part of the guide post 2314 located between the contact sleeve 2311 and the heating block 2312. The spring 2313 is always in a compressed state so that the heating block 2312 always tends to extend from the end of the contact sleeve 2311 away from the expansion support plate 332. When heating is required, the heating heads 231 on both sides of the expansion support plate 332 move closer to each other. When they reach a certain distance, the contact sleeves 2311 on both sides come into contact and press the mesh sleeve 11 tightly. The heating block 2312 continues to move toward the mesh sleeve until the heating blocks 2312 on both sides come into contact. The heating block 2312 has a certain temperature, which can melt the part of the mesh sleeve 11 that comes into contact with the heating block 2312.

[0038] The hot pressing plastic assembly 2 also includes two synchronous adjustment assemblies 24 for adjusting the height of multiple hot pressing heads 231. The two synchronous adjustment assemblies 24 are respectively disposed on both sides of the expansion support plate 332. Each synchronous adjustment assembly 24 includes a movable mounting bracket 22 and multiple guide rods 244. Each heating block 2312 is slidably disposed on the corresponding guide rod 244. Two heating blocks 2312 aligned in the vertical direction share the same guide rod 244. The synchronous adjustment assembly 24 also includes a linkage rod 242, with one linkage rod 242 corresponding to each heating block 2312. The ends of two linkage rods 242 in the vertical direction that are away from the heating block 2312 are hinged to the same hinge block. Each hinge block is provided with a telescopic adjustment rod 241, the end of which extends into the side of the movable mounting frame 22 opposite to the hinge block. The ends of multiple telescopic adjustment rods 241 that are away from the hinge block are fixed to the same linkage plate 245. An adjustment screw 243 is threaded onto the linkage plate 245. One end of the adjustment screw 243 is rotatably mounted on the movable mounting frame 22. When the adjustment screw 243 is rotated, it can drive the linkage plate 245 to move. The linkage plate 245 can drive the telescopic adjustment rod 241 to move. The telescopic adjustment rod 241 drives the heating head 231 to move up and down through the linkage rod 242, thus making it suitable for fruits of different sizes.

[0039] Specifically, the two movable mounting brackets 22 can move towards each other or away from each other. When hot pressing is required, they move towards each other, and when hot pressing is completed, they move away from each other. Specifically, the two movable mounting brackets 22 are driven by a bidirectional lead screw.

[0040] Preferably, the conveying assembly 4 includes a chain conveyor 41, on which a plurality of feeding plates 42 are installed. The chain conveyor 41 is used to drive the plurality of feeding plates 42 to move along the conveying direction. Each feeding plate 42 is provided with a plurality of limiting discharge holes 421, which are used to place fruit.

[0041] The conveying assembly 4 also includes a lifting assembly, which includes a vertically movable lifting push plate 44 located directly below the synchronous spreading assembly 33. The lifting push plate 44 has multiple inserting posts 45, each with a limiting suction cup 46 at its top. The limiting suction cup 46 is used to adhere and fix the fruit 1. One inserting post 45 is located directly below each set of expansion support plates 332. In use, a feeding plate 42 moves directly above the inserting post 45, aligning the inserting post 45 with the corresponding limiting radiotherapy hole 421. The inserting post 45 first moves upward a certain distance, contacts and adheres to the fruit 1, and continues to move upward a certain distance. Then, the expansion support plate 32 spreads the net sleeve 11 and moves downward, placing the fruit 1 inside the expansion support plate 32. The pushing assembly 34 pushes the net sleeve 11 downward while the expansion support plate 33 moves upward. When the net sleeve 11 detaches from the expansion support plate 33, it fits perfectly onto the fruit 1. Next, the hot-pressing plastic component 2 operates, with the heating head moving towards the fruit 1 to thermally compress the upper and lower ends of the net sleeve 1. Since the fruit 1 is positioned on the insert post 45 at this time, to avoid interference, a clearance notch (not shown) can be provided on the lower heating block 2312 corresponding to the position of the insert post 45. In practice, the net sleeve 11 itself has a certain degree of elasticity; therefore, the thermal compression does not need to be very tight. The lifting push plate 44 is driven by an electric cylinder 43.

[0042] Meanwhile, the conveying component 4 can also adopt the conveying method in the prior art.

[0043] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A fruit packaging device that automatically opens the packaging mesh sleeve, characterized in that, It includes a frame, a conveying assembly for conveying fruit mounted on the frame, and a netting assembly for opening the netting and placing it over the fruit mounted on the frame and directly above the conveying assembly. The net support assembly includes two support plates arranged in the front-to-back direction, a rotating platform rotatably mounted on the two support plates, a mounting bracket, and a synchronous opening assembly. The mounting bracket can move back and forth along a diameter of the rotating platform, and the synchronous opening assembly is mounted on the mounting bracket for opening the net and placing it on the fruit. The synchronous expansion assembly includes multiple limiting mounting plates and multiple sets of expansion support plates distributed on the mounting bracket. The multiple limiting mounting plates are installed at equal intervals along the front-to-back direction on the lower surface of the mounting bracket. A through hole is provided on the mounting bracket corresponding to the position of each limiting mounting plate. Multiple strip grooves are provided at equal angles to the center of the corresponding through hole on each limiting mounting plate, and each strip groove is located on a diameter of the through hole. A set of expansion support plates corresponds to one limiting mounting plate, and the number of expansion support plates in each set is equal to the number of strip grooves on the corresponding limiting mounting plate. The upper end of each limiting mounting plate is slidably disposed in a strip groove. When the expansion support plate moves outward along the strip groove, it can expand the mesh sleeve.

2. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 1, characterized in that, The synchronous expansion assembly also includes an expansion mechanism for driving the expansion support plate to move back and forth. The expansion mechanism includes multiple connecting blocks and multiple expansion rods. A connecting block is provided directly above each through hole. Each connecting block 2 is connected to the corresponding expansion support plate through the expansion rod. One end of the expansion rod is hinged to the connecting block, and the other end is hinged to the corresponding expansion support plate. When the connecting block moves up and down, the expansion support plate can be moved back and forth. Multiple connecting blocks are connected by a synchronous connecting rod. By controlling the up and down movement of the synchronous connecting rod, the synchronous operation of multiple sets of expansion support plates can be achieved.

3. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 2, characterized in that, The support assembly also includes a pushing assembly for pushing the net sleeve down from the expansion support plate. The pushing assembly includes multiple pushing sleeves, with one pushing sleeve corresponding to each set of expansion support plates. Each pushing sleeve is fitted onto a corresponding set of expansion support plates, and the pushing sleeve can move up and down. Multiple push rods are arranged at equal angles inside the pushing sleeves, and each expansion support plate is provided with a vertically extending through slot. The push rods pass through the corresponding through slots. When the pushing sleeve moves downward, the push rods can push the net sleeve on the expansion support plate downward. The inner ends of multiple push rods corresponding to the same set of expansion support plates are set on the same push rod. The push rod is set vertically, and the upper ends of multiple push rods are connected to the same push plate. By controlling the up and down movement of the push plate, the net sleeve can be pushed out.

4. The fruit packaging equipment for automatically opening the packaging netting according to claim 3, characterized in that, A slide groove is provided on each rotating platform, the slide groove is located on a diameter of the rotating platform, the openings of the slide grooves on the two rotating platforms are arranged opposite each other, and a slide table is provided on each slide groove, the slide table can slide back and forth along the slide groove; the two ends of the mounting bracket are respectively connected to the corresponding slide table; each set of expansion support plates forms a complete cylindrical structure in the contracted state.

5. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 4, characterized in that, It also includes a hot-pressing plastic component, used to hot-press both ends of the netting after it is put on the fruit; the hot-pressing component includes multiple hot-pressing heads, each set of expansion plates corresponds to four hot-pressing heads, and the four hot-pressing heads are paired up to heat and melt the upper and lower ends of the netting respectively. Each of the hot press heads includes a heating block and an abutment sleeve, the abutment sleeve being a hollow structure, the heating block being able to be inserted into the abutment sleeve from the end of the abutment sleeve away from the expansion support plate and being able to be exposed from the end of the abutment sleeve closer to the expansion support plate.

6. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 5, characterized in that, Guide posts are provided on the front and rear sides of the contact sleeve. The guide posts are located at the end of the contact sleeve away from the expansion support plate. The end of the guide post away from the contact sleeve passes through the heating block. The guide post can slide relative to the heating block and a limit nut is provided at the end of the guide post away from the contact sleeve. A spring is provided on the part of the guide post located between the contact sleeve and the heating block. The spring is always in a compressed state so that the heating block always tends to extend from the end of the contact sleeve away from the expansion support plate.

7. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 6, characterized in that, The hot-pressing plastic assembly also includes two synchronous adjustment components for adjusting the height of multiple hot press heads. The two synchronous adjustment components are respectively disposed on both sides of the expansion support plate. Each synchronous adjustment component includes a movable mounting frame and multiple guide rods. Each heating block is slidably disposed on a corresponding guide rod. Two heating blocks aligned in the vertical direction share the same guide rod. The synchronous adjustment component also includes linkage rods. Each heating block corresponds to one linkage rod. The ends of two linkage rods corresponding in the vertical direction that are away from the heating block are hinged to the same hinge block. Each hinge block is provided with a telescopic adjustment rod. The end of the telescopic adjustment rod away from the hinge block extends into the side of the movable mounting frame opposite to the hinge block. The ends of multiple telescopic adjustment rods away from the hinge block are fixed to the same linkage plate. An adjustment screw is threadedly connected to the linkage plate. One end of the adjustment screw is rotatably disposed on the movable mounting frame.

8. The fruit packaging equipment for automatically opening the packaging mesh sleeve according to claim 7, characterized in that, The conveying assembly includes a chain conveyor with multiple feeding plates installed on it. The chain conveyor drives the multiple feeding plates to move along the conveying direction. Each feeding plate is provided with multiple limiting discharge holes. The limiting discharge hole 1 is used to place fruit. The conveying assembly also includes a lifting assembly, which includes a vertically movable lifting push plate located directly below the synchronous spreading assembly. The lifting push plate is provided with multiple inserting posts, and each inserting post is provided with a limiting suction cup at its top. The limiting suction cup is used to adsorb and fix the fruit. One inserting post is provided directly below each set of expansion support plates. The number of inserting posts is the same as the number of limiting discharge holes on each feeding plate and corresponds one-to-one. The inserting posts can be inserted into the limiting discharge holes.

9. A fruit packaging method, employing the fruit packaging equipment for automatically opening the packaging mesh sleeve as described in claim 8, characterized in that, Specifically, the steps include the following: Step 1: Place the fruit onto the limiting discharge hole of the feeding plate of the conveying component; Step 2: The conveyor assembly moves the fruit directly under the expansion support plate; Step 3: Place the expansion support plate facing upwards and put on the mesh cover; Step 4: After expanding the expansion plate outwards, rotate it 180° so that the expansion plate faces downwards; Step 5: Move the expansion support plate downwards a certain distance, and move the insertion column downwards a certain distance, so that the fruit is located inside the expansion support plate; Step 6: The pushing component pushes the mesh sleeve downwards while the expansion support plate moves upwards until the mesh sleeve disengages from the expansion support plate. Step 7: Move the heating heads on both sides of the fruit a certain distance towards each other, heat-press the upper and lower ends of the netting, and then move the heating heads away from each other.

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