Fruit and vegetable packaging machine

Abstract

The utility model discloses a fruit and vegetable packaging machine, which belongs to the technical field of fruit and vegetable packaging, and adopts the technical scheme that the fruit and vegetable packaging machine comprises a rack, a feeding hole is formed in the top of the rack, and the rack is also provided with a film releasing assembly, a cladding plate, a film pulling assembly, a film separating assembly, a tightening and heat sealing assembly and a material supporting assembly; a packaging film is automatically cut through the film drawing and separating assembly, the accurate, smooth and consistent cutting effect is achieved, materials are put in through the feeding port, then the packaging film is pressed into the through hole through the materials, the wrapping plate gathers the packaging film to the materials, tightening and heat sealing of an opening are completed through the tightening and heat sealing assembly, the automation technology is adopted, the production efficiency is improved, and the production cost is reduced. Manual operation is reduced, the labor intensity is reduced, the packaging process can be efficiently completed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fruit and vegetable packaging, and more specifically to a fruit and vegetable packaging machine. Background Art

[0002] With the rapid development of modern agriculture and the continuous improvement of consumers' requirements for food quality, the packaging of fruits and vegetables has received increasing attention. Even some larger-sized ones, such as cabbages, grapefruits, watermelons, etc., will be independently packaged. Generally, a piece of packaging film is used to wrap the fruits and vegetables, and the opening is tied tightly and then heat-sealed.

[0003] However, the traditional method mainly relies on manual packaging, and there are the following problems: 1. It is necessary to produce a certain length of film in advance, and if a film of other length is to be replaced, it needs to be produced again, which is likely to cause inventory backlog; 2. The force during wrapping is inconsistent, and it is impossible to ensure the tightness of the film wrapping and the tension of the film; 3. The efficiency of manually taking the film and wrapping is relatively low, and it is difficult to meet the requirements of large-scale production.

[0004] Therefore, developing an efficient, intelligent, and automated fruit and vegetable packaging machine has become an urgent need for the industry's development. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A fruit and vegetable packaging machine, including a frame. An inlet is provided at the top of the frame, and the following components are also provided on the frame:

[0007] A film releasing assembly, including two film supporting rollers arranged at intervals, and a packaging film roll is placed between the two film supporting rollers;

[0008] A wrapping plate, arranged below the inlet, and a through hole for the material to pass through is provided on the wrapping plate;

[0009] A film pulling assembly, slidably connected to the frame and arranged between the inlet and the wrapping plate. After the film pulling assembly clamps the packaging film, it moves to the other side of the through hole, so that the packaging film covers the through hole;

[0010] A film separating assembly, arranged between the film releasing assembly and the inlet. After the film pulling assembly covers the through hole with the packaging film, the film separating assembly cuts the packaging film from the packaging film roll;

[0011] A tying and heat-sealing assembly, including a frame arranged below the wrapping plate. Two film gathering plates are respectively slidably connected to both ends of the frame. A heat-sealing member is also provided on the frame. The two film gathering plates slide towards each other to gather and tie the opening of the packaging film, and the heat-sealing member is used to heat-seal the opening of the packaging film;

[0012] The material supporting component is arranged below the tightening and heat-sealing component. The material passes through the feeding port, the through hole, and the film gathering plate in sequence and is then placed on the material supporting component. The material supporting component is arranged to move vertically.

[0013] The present utility model is further arranged as follows: The film pulling component includes a film pulling bracket slidably connected to the frame. A film clamping rotating shaft is rotatably connected to the film pulling bracket. A plurality of film clamping plates are arranged along the length direction of the film pulling bracket on the film clamping rotating shaft. A film clamping cylinder is arranged on the film pulling bracket. The film clamping cylinder is connected to the film clamping rotating shaft through a transmission connecting rod, so as to drive the film clamping rotating shaft to rotate, and make the film clamping plates clamp the packaging film on the film pulling bracket.

[0014] The present utility model is further arranged as follows: The film separating component includes a film separating bracket arranged between the film releasing component and the feeding port. A film separating knife movably arranged in the vertical direction is arranged on the film separating bracket. A film separating motor for driving the film separating knife to move up and down is arranged on the film separating bracket. It further includes an upper film pressing plate and a lower film pressing plate. When the film separating knife cuts the packaging film, the upper film pressing plate and the lower film pressing plate clamp the packaging film.

[0015] The present utility model is further arranged as follows: The lower film pressing plate is fixed to the bottom of the film separating bracket. A film pressing mounting frame is arranged on the film separating knife. The upper film pressing plate is slidably connected to the film pressing mounting frame in the vertical direction. A film pressing spring is connected between the upper film pressing plate and the film pressing mounting frame. When the upper film pressing plate and the lower film pressing plate clamp, the film pressing spring is compressed.

[0016] The present utility model is further arranged as follows: A first film gathering bracket and a second film gathering bracket are respectively slidably connected to both ends of the frame. The two film gathering plates are respectively arranged on the first film gathering bracket and the second film gathering bracket. The film gathering plates are in a "V" shape. The first film gathering bracket and the second film gathering bracket are respectively driven by film gathering cylinders arranged on the frame. The heat-sealing member includes two heating blocks respectively arranged on the first film gathering bracket and the second film gathering bracket.

[0017] The present utility model is further arranged as follows: Two symmetrically arranged tightening plates are rotatably connected to the first film gathering bracket. The front end of the tightening plate extends outwards. A guiding slideway is arranged on the frame. A cam follower is arranged at the rear end of the tightening plate. The cam follower slides in the guiding slideway. When the first film gathering bracket slides towards the second film gathering bracket, the cam follower slides along the guiding slideway, and the rear ends of the two tightening plates open outwards, so that the front ends rotate inwards to clamp the packaging film.

[0018] The present utility model is further configured as follows: A film cutting knife is provided on the second film gathering bracket. When the two film gathering plates slide towards each other to gather and tie the opening of the packaging film, the film cutting knife cuts off the redundant part of the packaging film from the opening. A film blowing head is further provided on the frame for blowing out the cut redundant part.

[0019] The present utility model is further configured as follows: The material supporting assembly includes a material supporting bracket movably arranged in the vertical direction. A material supporting motor for driving the movement of the material supporting bracket is provided on the machine frame. A tray is rotatably connected to the material supporting bracket. A notch is formed on the material supporting bracket. A top rod is vertically arranged on the machine frame and below the material supporting bracket. When the material supporting bracket moves downward, the top rod passes through the notch to jack up the tray, so that the tray is turned over to pour out the material.

[0020] The present utility model is further configured as follows: Claw jaws are respectively rotatably connected to both sides of the tray on the material supporting bracket. A fixture torsion spring is arranged on the rotating shaft of the claw jaw to make the claw jaw rotate towards the inside of the tray through the torsion spring. A fixture air cylinder for driving the claw jaw to unfold is further provided on the material supporting bracket.

[0021] Compared with the prior art, the present utility model has at least the following advantages:

[0022] 1. The packaging film is automatically slit by the film pulling and film separating assemblies to achieve accurate, flat and consistent cutting effects. The material is put in through the feeding port. Subsequently, the material presses the packaging film into the through hole. The covering plate gathers the packaging film towards the material. The opening is tied and heat-sealed by the tying and heat-sealing assembly. The present utility model adopts an automatic technology, which can quickly pull, cut and position the packaging film, tightly wrap it on the material, and automatically heat-seal the opening, reducing manual operation, lowering the labor intensity, being able to efficiently complete the packaging process and improving the production efficiency.

[0023] 2. A tying plate is provided in the tying and heat-sealing assembly. As the first film gathering bracket moves, the cam follower slides along the guiding slideway to drive the tying plate to open and close, clamping the packaging film more tightly without the need to set additional driving parts. A film blowing head is also provided to blow out the cut redundant packaging film to prevent subsequent work from being affected.

[0024] 3. A rotatably connected tray is provided in the material supporting assembly, which can be turned over to pour out the material, making the feeding more convenient. Claw jaws are also provided, which can clamp the material on the tray to make the packaging more stable. Description of the Drawings

[0025] Figure 1 is the overall schematic diagram of this embodiment;

[0026] Figure 2 is the side view of this embodiment;

[0027] Figure 3 It is the first perspective view of the film pulling assembly;

[0028] Figure 4 It is the second perspective view of the film pulling assembly;

[0029] Figure 5 It is the side sectional view of the film pulling assembly;

[0030] Figure 6 It is the schematic diagram of the film separating assembly;

[0031] Figure 7 It is the side sectional view of the film separating assembly;

[0032] Figure 8 It is the schematic diagram of the tightening and heat-sealing assembly and the covering plate;

[0033] Figure 9 It is the perspective view of the top of the tightening and heat-sealing assembly;

[0034] Figure 10 It is the first perspective view of the bottom of the tightening and heat-sealing assembly;

[0035] Figure 11 It is the second perspective view of the bottom of the tightening and heat-sealing assembly;

[0036] Figure 12 It is the schematic diagram of the material supporting assembly;

[0037] Figure 13 It is the front view of the material supporting assembly;

[0038] Figure 14 It is the schematic diagram showing the ejector rod and the discharge channel.

[0039] Explanation of reference numerals:

[0040] 1. Film supporting roller; 2. Covering plate;

[0041] 3. Film pulling assembly; 301. Film pulling bracket; 302. Film clamping rotating shaft; 303. Film clamping plate; 304. Film clamping cylinder; 305. Film pulling chute; 306. Film pulling motor; 307. First film clamping torsion spring; 308. Second film clamping torsion spring; 309. Contact rod;

[0042] 4. Film separating assembly; 401. Film separating bracket; 402. Film separating knife; 403. Film separating motor; 404. Main shaft connecting rod; 405. Driven connecting rod; 406. Upper film pressing plate; 407. Lower film pressing plate; 408. Film pressing mounting bracket; 409. Film pressing spring;; 410. Film pressing positioning strip;

[0043] 5. Tightening and heat-sealing assembly; 501. Frame; 502. Film gathering plate; 503. Heating block; 504. First film gathering bracket; 505. Second film gathering bracket; 506. Film gathering cylinder; 507. Clamping bracket; 508. Buffer tension spring; 509. Tightening plate; 510. Cam follower; 511. Guide slideway; 512. Film cutting knife; 513. Film blowing head;

[0044] 6. Material supporting assembly; 601. Material supporting bracket; 602. Guide rod; 603. Material supporting motor; 604. Tray; 605. Notch; 606. Push rod; 607. Reset tension spring; 608. Claw; 609. Clamping fixture torsion spring; 610. Clamping fixture cylinder; 611. Driving block; 612. Driving rod; 613. Sliding groove; 614. Buffer spring; 615. Buffer column; 616. Connecting plate;

[0045] 7. Discharge channel; 8. Waste film discharge port; 9. Machine frame; 10. Feed inlet; 11. Packaging film roll; 12. Material. Detailed implementation manners

[0046] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0047] In the description of the present utility model, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0048] A fruit and vegetable packaging machine, as Figure 1 and Figure 2 shown, includes a machine frame 9. A feed inlet 10 is provided at the top of the machine frame 9 for placing the material to be packaged. The machine frame 9 is further provided with: a film feeding assembly, a covering plate 2, a film pulling assembly 3, a film separating assembly 4, a tightening and heat-sealing assembly 5 and a material supporting assembly 6.

[0049] The film feeding assembly is arranged at one end of the machine frame 9 and includes two parallel and spaced-apart film supporting rollers 1. The packaging film roll is placed between the two film supporting rollers 1, and the two film supporting rollers 1 hold the packaging film roll, and the packaging film is pulled out from the packaging film roll.

[0050] The covering plate 2 is arranged below the feeding port 10. A through hole for the material to pass through is formed in the middle of the covering plate 2, so that the whole covering plate 2 is annular. Since the packaging film is located above the covering plate 2, when the material is put in, the packaging film will be pressed into the through hole together, causing the packaging film to gather towards the middle and wrap around the material.

[0051] As Figures 2 to 5 shown, the film pulling assembly 3 is slidably connected to the frame 9 and is arranged between the feeding port 10 and the covering plate 2. After clamping the packaging film, the film pulling assembly 3 moves to the other side of the through hole, so that the packaging film covers the through hole of the covering plate 2. The film pulling assembly 3 includes a film pulling bracket 301 slidably connected to the frame 9. Film pulling chutes 305 are arranged on both sides of the frame 9 along the length direction of the frame 9. Pulley wheels for sliding in the film pulling chutes 305 are arranged at both ends of the film pulling bracket 301. A film pulling motor 306 is arranged on the frame 9. The film pulling motor 306 is connected to the film pulling bracket 301 through a transmission chain, so as to drive the film pulling bracket 301 to move along the film pulling chute 305.

[0052] A film clamping rotating shaft 302 is rotatably connected to the film pulling bracket 301. A plurality of film clamping plates 303 are arranged on the film clamping rotating shaft 302 along the length direction of the film pulling bracket 301. A film clamping cylinder 304 is arranged on the film pulling bracket 301. The film clamping cylinder 304 is connected to the film clamping rotating shaft 302 through a transmission connecting rod, so as to drive the film clamping rotating shaft 302 to rotate, enabling the film clamping plates 303 to clamp the packaging film on the film pulling bracket 301. When the piston rod of the film clamping cylinder 304 extends, the transmission connecting rod drives the film clamping rotating shaft 302 to rotate, causing the film clamping plates 303 to turn upwards and abut against the film pulling bracket 301. When the piston rod of the film clamping cylinder 304 retracts (as Figure 5 shown), the transmission connecting rod drives the film clamping rotating shaft 302 to rotate, causing the film clamping plates 303 to turn downwards to release.

[0053] The film clamping plates 303 are fixedly connected to the film clamping rotating shaft 302 by set screws. A first film clamping torsion spring 307 and a second film clamping torsion spring 308 are respectively arranged on both sides of the film clamping plate 303 where the film clamping rotating shaft 302 is located. An abutting rod 309 parallel to the film clamping rotating shaft 302 is arranged on the transmission connecting rod. One end of the first film clamping torsion spring 307 is placed on the film clamping plate 303 and the other end is placed on the abutting rod 309, so that the rear end of the film clamping plate 303 abuts against the abutting rod 309. This spring is used during assembly to adjust each individual film clamping plate 303 to the same horizontal plane, enabling each film clamping plate 303 to clamp the packaging film during operation. One end of the second film clamping torsion spring 308 is placed on the film clamping plate 303 and the other end is placed on the bottom of the film pulling bracket 301, providing a clamping force through the film clamping cylinder 304 and enabling the film clamping plate 303 to respond faster when rotating upwards to clamp.

[0054] As Figure 2 、Figure 6 , Figure 7 As shown in Figure 7 , the film separating assembly 4 is arranged between the film placing assembly and the feed port 10. After the film pulling assembly 3 covers the through hole with the packaging film, the film separating assembly 4 cuts the packaging film from the packaging film roll 11. The film separating assembly 4 includes a film separating bracket 401 arranged between the film placing assembly and the feed port 10. A film separating knife 402 that moves vertically is arranged on the film separating bracket 401. A film separating motor 403 for driving the film separating knife 402 to move up and down is arranged on the film separating bracket 401. By driving the cam to do circular motion with the film separating motor 403, the main shaft connecting rod 404 drives the driven connecting rod 405, thereby driving the film separating knife 402 to do reciprocating up and down motion.

[0055] The film separating assembly 4 further includes an upper film pressing plate 406 and a lower film pressing plate 407. When the film separating knife 402 cuts the packaging film, the upper film pressing plate 406 and the lower film pressing plate 407 clamp the packaging film to prevent the subsequent packaging film from being pulled out. The lower film pressing plate 407 is fixed to the bottom of the film separating bracket 401. A film pressing mounting frame 408 is arranged on the film separating knife 402. The upper film pressing plate 406 is slidably connected to the film pressing mounting frame 408 in the vertical direction. A film pressing spring 409 is connected between the upper film pressing plate 406 and the film pressing mounting frame 408. A connecting column protrudes from the top of the upper film pressing plate 406. The connecting column passes through the film pressing mounting frame 408 and is slidably connected thereto. The film pressing spring 409 is sleeved on the connecting column. When the upper film pressing plate 406 and the lower film pressing plate 407 clamp, the film pressing spring 409 is compressed, enabling the film separating knife 402 to continue to move downward to cut the packaging film.

[0056] The film separating assembly 4 further includes a film pressing positioning strip 410. The top of the film pressing positioning strip 410 is fixed to the frame 9, and the bottom is attached to the film separating bracket 401. The film pressing positioning strip 410 is made of rubber and is elastic and bendable. The packaging film passes through the film pressing positioning strip 410 and the film separating bracket 401. After the packaging film is cut, the front end of the subsequent packaging film is pressed on the film separating bracket 401 by the film pressing positioning strip 410 and will not run away, facilitating the subsequent clamping of the packaging film.

[0057] As Figures 8 to 11 shown in Figures 8 to 11 , the tightening and heat-sealing assembly 5 includes a frame 501 arranged below the covering plate 2. The covering plate 2 is fixed on the frame 501. Two film gathering plates 502 are respectively slidably connected to both ends of the frame 501. The film gathering plates 502 are located below the covering plate 2. A heat-sealing member is also arranged on the frame 501. The two film gathering plates 502 slide towards each other to gather and tighten the opening of the packaging film. The heat-sealing member is used for heat-sealing the opening of the packaging film.

[0058] Both ends of the frame 501 are slidably connected to a first film gathering bracket 504 and a second film gathering bracket 505 respectively. The first film gathering bracket 504 and the second film gathering bracket 505 are respectively driven by film gathering cylinders 506 arranged on both sides of the frame 501. And both ends of the first film gathering plate 502 and the second film gathering plate 502 slide on the guide rails. The two film gathering plates 502 are respectively arranged on the first film gathering bracket 504 and the second film gathering bracket 505. The film gathering plate 502 is in a "V" shape, and the wider ends of the film gathering plate 502 face each other. When the two film gathering plates 502 approach each other, the narrow ends of the film gathering plate 502 approach each other and the opening shrinks, so as to gather the packaging film. The heat sealing member includes two heating blocks 503 respectively arranged on the first film gathering bracket 504 and the second film gathering bracket 505. The heating blocks are located at the middle position. When the first film gathering bracket 504 and the second film gathering bracket 505 approach, the two heating blocks 503 clamp the gathered packaging film to achieve heat sealing.

[0059] Clamping brackets 507 are slidably connected to both the first film gathering bracket 504 and the second film gathering bracket 505. A buffer tension spring 508 is connected between the clamping bracket 507 and the film gathering bracket. When the first film gathering bracket 504 and the second film gathering bracket 505 move, the clamping bracket 507 is driven to move together through the buffer tension spring 508. The heating blocks 503 are respectively fixed on the first film gathering bracket 504 and the second film gathering bracket 505. When the first film gathering bracket 504 and the second film gathering bracket 505 move towards each other, the heating blocks 503 on both sides clamp the packaging film, and the clamping bracket 507 is pushed backward, and the buffer tension spring 508 is stretched, ensuring that the film has sufficient tension to be cut when heat sealing and cutting.

[0060] Two symmetrically arranged tightening plates 509 are rotatably connected to the first film gathering bracket 504. Taking the rotation point of the tightening plate 509 as the boundary, the front ends of the tightening plate 509 extend outward respectively. A cam follower 510 is arranged at the rear end of the tightening plate 509. A guiding slideway 511 is arranged on the frame 501. The cam follower 510 slides in the guiding slideway 511. The guiding slideway 511 is in a "Y" shape. When the first film gathering bracket 504 slides towards the second film gathering bracket 505, the cam follower 510 slides along the guiding slideway 511, so that the rear ends of the two tightening plates 509 open outward, thereby making the front ends of the tightening plates 509 rotate inward to clamp the packaging film. When the first film gathering bracket 504 moves outward, the rear ends of the tightening plates 509 approach each other again, and the front ends open again.

[0061] A cutting film knife 512 is provided on the second film folding bracket 505. The cutting film knife 512 is fixed on the heating block 503. The cutting film knife 512 and the heating block 503 are heated simultaneously. When the two film folding plates 502 slide towards each other to close and tie the opening of the packaging film, the cutting film knife 512 cuts off the redundant part of the packaging film from the opening. A film blowing head 513 is also provided at the top of the film folding plate 502. The film blowing head 513 blows air obliquely downward to blow away the cut redundant part to avoid affecting subsequent work. A waste film discharge port 8 is provided on the side wall of the machine frame 9, and the waste material is blown out from the waste film discharge port 8.

[0062] As Figure 2 , Figure 12 , Figure 13 shown, the material supporting component 6 is arranged below the tightening and heat-sealing component 5. During feeding, the material passes through the feeding port, the through hole, and the film folding plate in sequence and is placed on the material supporting component 6. The material supporting component 6 is arranged to move vertically.

[0063] The material supporting component 6 includes a material supporting bracket 601 arranged to move vertically. A guide rod 602 is vertically arranged on the machine frame 9. The material supporting bracket 601 is slidably connected to the guide rod 602. A material supporting motor 603 is arranged on the machine frame 9. The material supporting motor 603 drives the material supporting bracket 601 to slide on the guide rod 602 through a transmission chain.

[0064] A tray 604 is rotatably connected to the material supporting bracket 601. The rotating shaft of the tray 604 is horizontally arranged. A notch 605 is formed on the material supporting bracket 601. A top rod 606 is vertically arranged on the machine frame 9 and below the material supporting bracket 601. When the material supporting bracket 601 moves downward, the top rod 606 passes through the notch 605 to lift the tray 604, so that the tray 604 flips upward along the rotating shaft to pour out the material. At the same time, a reset tension spring 607 is connected between the tray 604 and the material supporting bracket 601. When the material supporting bracket 601 moves upward, the reset tension spring 607 drives the tray 604 to flip and reset.

[0065] The material supporting bracket 601 is slidably connected to the guide rod 602 through a connecting plate 616. The material supporting bracket 601 is movably arranged on the connecting plate 616, and a buffer spring 614 is arranged between the material supporting bracket 601 and the connecting plate 616. A buffer column 615 vertically arranged and slidably connected to the connecting plate 616 is provided at the bottom of the material supporting bracket 601. The buffer spring 614 is sleeved on the buffer column 615. The top end of the buffer spring 614 is connected to the bottom of the material supporting bracket 601. A limit block is provided at the bottom of the buffer column 615 to prevent the buffer spring 614 from lifting the material supporting bracket 601 and causing the buffer column 615 to fall off the connecting plate 616. When the material falls onto the tray 604 from above, the material supporting bracket 601 moves downward to compress the buffer spring 614, playing a buffering role.

[0066] On both sides of the pallet 604, there are clamping jaws 608 rotatably connected to the material supporting bracket 601. A fixture torsion spring 609 is arranged on the rotating shaft of the clamping jaw 608. Through the torsion spring, the clamping jaw 608 rotates inward into the pallet 604. The material on the pallet 604 is clamped and fixed by the clamping jaws 608 on both sides. At the bottom of the material supporting bracket 601, there is also a fixture cylinder 610 for driving the clamping jaws 608 to expand. A driving block 611 is rotatably connected to the material supporting bracket 601. The piston rod of the fixture cylinder 610 is rotatably connected to the driving block 611. At the same time, driving rods 612 are respectively connected between the driving block 611 and the clamping jaws 608 on both sides. One end of the driving rod 612 is rotatably connected to the driving block 611, and the other end is connected to the bottom of the clamping jaw 608. When the piston rod of the fixture cylinder 610 retracts, it drives the driving block 611 to rotate towards the vertical state, causing the driving rod 612 to drive the bottom of the clamping jaw 608 to rotate inward, so that the top of the clamping jaw 608 opens outward.

[0067] A sliding groove 613 is formed on the driving rod 612. The bottom of the clamping jaw 608 is slidably connected in the sliding groove 613. When the piston rod of the fixture cylinder 610 extends, it drives the driving block 611 to rotate towards the horizontal state, causing the driving rods 612 on both sides to extend outward. At this time, the bottom of the clamping jaw 608 slides in the sliding groove 613 and does not drive the clamping jaw 608 to rotate. When the driving rod 612 retracts inward, the bottom of the clamping jaw 608 abuts against the end of the sliding groove 613. Therefore, it will drive the bottom of the clamping jaw 608 to rotate inward to open the clamping jaw, so that the clamping jaw 608 is only driven by the fixture torsion spring 609 to clamp inward, and the fixture cylinder 610 only drives the clamping jaw 608 to expand and does not drive the clamping jaw 608 to clamp, avoiding material damage caused by cylinder driving.

[0068] As Figure 14 shown, on one side of the frame 9, there is a discharge channel 7. The discharge channel 7 faces the side where the pallet 604 flips. When the pallet 604 flips to pour out the material, the material will fall into the discharge channel 7. The discharge channel 7 is arranged obliquely downward, and the material rolls out along the discharge channel 7.

[0069] The working process of the present utility model is as follows:

[0070] 1. After the film pulling assembly 3 clamps the packaging film, it straightens the packaging film and wraps it around the other side of the covering plate 2 so that the packaging film covers the through hole. The film separating assembly 4 cuts this section of the packaging film from the packaging film roll.

[0071] 2. The staff places the material through the through hole of the covering plate 2 on the pallet 604. The material presses the packaging film into the through hole together, so that the packaging film is wrapped around the material.

[0072] 3. The first film gathering bracket 504 and the second film gathering bracket 505 move towards the middle to gather the packaging film. At the same time, the tying plate 509 rotates towards the middle to further tie the packaging film. At this time, the heating block 503 clamps the packaging film and heat-seals the opening. At the same time, the film cutting knife 512 cuts the packaging film from the opening, and the film blowing head 513 blows out the waste above the opening, completing the packaging work.

[0073] 4. Subsequently, the material supporting assembly 6 moves downward. The clamping cylinder 610 of the fixture drives the clamping jaws 608 to open. The ejector rod 606 extends into the material supporting bracket 601 from the notch 605 to lift and turn over the tray 604, and the tray 604 pours the material into the discharge channel 7.

[0074] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fruit and vegetable packaging machine, characterized in that: The machine comprises a frame, a feeding port is provided on the top of the frame, and the frame is also provided with: The film placing assembly comprises two film bearing rollers arranged at an interval, and the packaging film roll is placed between the two film bearing rollers; A covering plate is arranged below the feed port, and a through hole is provided on the covering plate for the material to pass through; A film-pulling assembly is slidably connected to the frame and is disposed between the feed port and the covering plate. The film-pulling assembly clamps the packaging film and moves to the other side of the through hole so that the packaging film covers the through hole. A film separation component is arranged between the film placing component and the feed port, and when the film pulling component covers the through hole with the packaging film, the film separation component cuts the packaging film from the packaging film roll; The tightening heat-sealing assembly comprises a frame arranged below the covering plate, the two ends of the frame are slidably connected with film-closing plates, and the frame is also provided with a heat-sealing member. The two film-closing plates slide toward each other to tighten the opening of the packaging film, and the heat-sealing member is used to heat-seal the opening of the packaging film; The material supporting component is arranged below the tightening heat sealing component. The material passes through the feed port, the through hole and the film closing plate in sequence and is placed on the material supporting component. The material supporting component is arranged to move in the vertical direction.

2. A fruit and vegetable packaging machine according to claim 1, characterized in that: The film-pulling assembly includes a film-pulling bracket slidably connected to a frame, a film-clamping shaft rotatably connected to the film-pulling bracket, a plurality of film-clamping plates arranged on the film-pulling shaft along the length direction of the film-pulling bracket, a film-clamping cylinder arranged on the film-pulling bracket, the film-clamping cylinder and the film-clamping shaft are connected by a transmission connecting rod, thereby driving the film-clamping shaft to rotate, so that the film-clamping plates clamp the packaging film on the film-pulling bracket.

3. The fruit and vegetable packaging machine according to claim 1, characterized in that: The film separating component includes a film separating bracket arranged between the film placing component and the feed port, the film separating bracket is provided with a film separating knife movable in a vertical direction, the film separating bracket is provided with a film separating motor for driving the film separating knife to move up and down, and also includes an upper film pressing plate and a lower film pressing plate, when the film separating knife cuts the packaging film, the upper film pressing plate and the lower film pressing plate clamp the packaging film.

4. A fruit and vegetable packaging machine according to claim 3, characterized in that: The lower film pressing plate is fixed to the bottom of the film separating bracket, the film separating knife is provided with a film pressing mounting frame, the upper film pressing plate is slidably connected to the film pressing mounting frame along the vertical direction, a film pressing spring is connected between the upper film pressing plate and the film pressing mounting frame, and when the upper film pressing plate and the lower film pressing plate are clamped, the film pressing spring is compressed.

5. The fruit and vegetable packaging machine according to claim 1, characterized in that: The two ends of the frame are respectively slidably connected with a first film gathering bracket and a second film gathering bracket, the two film gathering plates are respectively arranged on the first film gathering bracket and the second film gathering bracket, the film gathering plates are in a "V" shape, the first film gathering bracket and the second film gathering bracket are respectively driven by film gathering cylinders arranged on the frame, and the heat sealing part includes two heating blocks respectively arranged on the first film gathering bracket and the second film gathering bracket.

6. The fruit and vegetable packaging machine according to claim 5, characterized in that: The first film gathering bracket is rotatably connected to two symmetrically arranged tightening plates, the front end of the tightening plates is extended outward, the frame is provided with a guide slide, the rear end of the tightening plates is provided with a cam follower, the cam follower slides in the guide slide, when the first film gathering bracket slides toward the second film gathering bracket, the cam follower slides along the guide slide, the rear ends of the two tightening plates open outward, so that the front ends rotate inward to clamp the packaging film.

7. The fruit and vegetable packaging machine according to claim 5, characterized in that: The second film gathering bracket is provided with a film cutting knife. When the two film gathering plates slide towards each other to close and tighten the opening of the packaging film, the film cutting knife cuts off the excess part of the packaging film from the opening. The frame is also provided with a film blowing head for blowing out the cut excess part.

8. The fruit and vegetable packaging machine according to claim 1, characterized in that: The material supporting assembly includes a material supporting bracket arranged to move in a vertical direction, a material supporting motor for driving the material supporting bracket to move is arranged on the frame, a tray is rotatably connected to the material supporting bracket, a notch is provided on the material supporting bracket, a push rod is vertically arranged on the frame and below the material supporting bracket, when the material supporting bracket moves downward, the push rod passes through the notch to lift the tray, so that the tray is flipped over to pour out the material.

9. The fruit and vegetable packaging machine according to claim 8, characterized in that: The support bracket is located on both sides of the tray and is rotatably connected to clamps. The rotating shaft of the clamp is provided with a clamp torsion spring, and the clamp is rotated into the tray by the torsion spring. The support bracket is also provided with a clamp cylinder for driving the clamp to unfold.

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