Fresh day lily nitrogen filling and packaging device

Abstract

The utility model discloses a fresh day lily fills nitrogen packing plant belongs to packaging machinery technical field. The device includes first conveyor belt, second conveyor belt and third conveyor belt that are connected in proper order, is equipped with the triangular groove, plastic envelope machine body, nitrogen filling mechanism and plastic envelope cutter head on the second conveyor belt, to complete film wrapping, preliminary plastic envelope, nitrogen filling and final plastic envelope in proper order, and the tail end of third conveyor belt is equipped with cutting mechanism, and this cutting mechanism includes the baffle and push rod for clamping positioning to the packaging and a set of eccentric wheel connecting rod transmission assembly that will motor rotary motion converts into blade reciprocating cutting motion, and this assembly includes motor, eccentric wheel, connecting rod and blade. The utility model discloses through the cooperative action of accurate positioning first and cutting later, effectively solved the cutting inaccuracy of packaging in the conveying process due to the position deviation, the technical problem of easy damage of the integrity of the seal, thereby ensured the effectiveness of nitrogen filling packaging, and the finished product qualification rate of automatic production was improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to a nitrogen-filled packaging device for fresh daylilies. Background Technology

[0002] Fresh daylilies are highly favored by consumers for their unique flavor and rich nutritional value. However, fresh daylilies are still actively engaged in biological processes after harvesting, making them extremely susceptible to spoilage due to oxidation and microbial growth, resulting in a very short shelf life. This severely restricts their long-distance transportation and market sales. To extend the shelf life of fresh daylilies, the industry commonly uses nitrogen-filled modified atmosphere packaging technology. By filling the packaging with nitrogen to replace oxygen, it effectively inhibits respiration and the reproduction of aerobic microorganisms, thus achieving the purpose of preservation.

[0003] The effectiveness of nitrogen-filled packaging highly depends on the integrity of the seal. On automated continuous packaging production lines, daylilies are typically first wrapped in a long strip of packaging film, then nitrogen-filled and sealed longitudinally and laterally. Finally, a cutting mechanism cuts the long strip of film into individual packaging units. This final cutting step is one of the key steps determining packaging quality.

[0004] In existing technologies, many packaging equipment designs have shortcomings in the cutting process. During high-speed transport, the long strip of packaging film is prone to cumulative errors or momentary deviations in position when it reaches the cutting station due to slight fluctuations in conveyor belt speed or mechanical gaps. If the cutting mechanism lacks precise positioning, the blade may fall inaccurately, causing the cutting position to deviate from the preset center line or cut at the heat-sealed edge of the packaging bag. This not only affects the product's appearance but may also directly damage the seal, leading to packaging leakage.

[0005] If the packaging leaks, the nitrogen inside will escape, and outside air will enter, rendering the nitrogen-filled preservation process, which has cost upfront, completely ineffective and failing to achieve the expected preservation effect. This ultimately leads to a decline in product quality and economic losses.

[0006] Therefore, this utility model proposes a nitrogen-filled packaging device for fresh daylilies to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a nitrogen-filled packaging device for fresh daylilies. It aims to improve the problem that the packaging film is prone to positional displacement when it is transported to the cutting station, resulting in low cutting accuracy and even damage to the packaging seal, thus causing the nitrogen-filled preservation effect to fail. This utility model aims to provide a nitrogen-filled packaging device for fresh daylilies with an improved structure that can effectively solve the above problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen-filled packaging device for fresh daylilies, comprising: a second conveyor belt, a third conveyor belt, a control machine, a second fixing rod, a fixing plate, a sealing blade; and a cutting mechanism.

[0009] The cutting mechanism is located at the end of the third conveyor belt.

[0010] Furthermore, the cutting mechanism includes a baffle, a push rod, a motor, an eccentric wheel, a connecting rod, and a blade. The push rod and the baffle form a pushing relationship to position the sealed packaging. The motor, the eccentric wheel, and the connecting rod form a transmission connection. The connecting rod is connected to the blade, and the blade is rotatably connected to the outer wall of the third conveyor belt via a second rotating rod.

[0011] Preferably, the sealing head is detachably connected to the fixing plate via a quick-release assembly. The quick-release assembly includes a knob, a first rotating rod, and a threaded rod. One end of the threaded rod engages with the groove thread of the sealing head, and the other end is connected to the first rotating rod. The knob is used to lock the fixing plate.

[0012] Preferably, the device further includes a sealing machine body, which is fixed above the second conveyor belt by a second support rod, and the sealing machine body is located upstream of the sealing cutter head.

[0013] Preferably, the sealing machine body has a rotating plate internally connected to a sliding plate and a clamping plate internally connected to a rotating plate, the rotating plate and the clamping plate being used for preliminary sealing of the packaging film.

[0014] Preferably, the device further includes a nitrogen filling mechanism, the outlet of which is located between the plastic FEM body and the sealing head.

[0015] Preferably, the device further includes a first fixing rod and a triangular groove, the first fixing rod being fixed to the frame of the second conveyor belt, and the triangular groove being connected to the first fixing rod.

[0016] Preferably, the device further includes a first conveyor belt and a feed trough, the first conveyor belt being supported by a first support rod, the discharge end of the first conveyor belt being connected to the feed trough, and the feed trough being located upstream of the triangular groove.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting up a transmission structure consisting of a motor, an eccentric wheel, a connecting rod, and a blade, and using a push rod and a baffle to position the packaging before cutting, the problem of low automation in packaging cutting and low precision caused by easy deviation during cutting is solved. The invention achieves automated and precise positioning and cutting, improving production efficiency and finished product qualification rate.

[0018] 2. This utility model solves the problem that existing technologies only involve simple sealing of fresh daylilies, which leads to the oxidation and spoilage of daylilies due to residual oxygen inside the packaging, resulting in a short shelf life. By setting a nitrogen filling mechanism before the final horizontal sealing, nitrogen is blown into the packaging. This achieves the technical effect of effectively replacing the air inside the packaging, inhibiting the growth of microorganisms and oxidation reactions, and significantly extending the shelf life of fresh daylilies. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a nitrogen-filled packaging device for fresh daylilies proposed in this utility model; Figure 2 This is a schematic diagram of the sealing body of a nitrogen-filled packaging device for fresh daylilies proposed in this utility model; Figure 3 This is a schematic diagram of the control unit for a nitrogen-filled packaging device for fresh daylilies proposed in this utility model; Figure 4 This is a schematic diagram of the knob of a nitrogen-filled packaging device for fresh daylilies proposed in this utility model; Figure 5 This is a schematic diagram of the second rotating rod of a nitrogen-filled packaging device for fresh daylilies proposed in this utility model; Figure 6 This is a schematic diagram of the third conveyor belt of a nitrogen-filled packaging device for fresh daylilies proposed in this utility model.

[0020] Legend: 1. First conveyor belt; 2. First support rod; 3. Feed chute; 4. First fixing rod; 5. Triangular groove; 6. Second conveyor belt; 7. Sealing machine body; 8. Second support rod; 9. Clamping plate; 10. Rotating plate; 11. Control unit; 12. Second fixing rod; 13. Fixing plate; 14. Quick release assembly; 1401. Threaded rod; 1402. First rotating rod; 1403. Knob; 1404. Sealing cutter head; 15. Third conveyor belt; 16. Cutting mechanism; 1601. Baffle; 1602. Push rod; 1603. Second rotating rod; 1604. Blade; 1605. Connecting rod; 1606. Motor; 1607. Eccentric wheel; 1608. Third rotating rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 3 This utility model provides a nitrogen-filled packaging device for fresh daylilies, which aims to solve the problems in the prior art where the packaging structure of fresh daylilies cannot effectively isolate oxygen, resulting in a short shelf life, and the inconvenience of replacing vulnerable parts of the sealing and cutting mechanisms, as well as the low precision of automated cutting.

[0023] like Figure 1 and Figure 2 As shown, the nitrogen-filled packaging device for fresh daylilies includes a first conveyor belt 1, a second conveyor belt 6, and a third conveyor belt 15 arranged in series. The first conveyor belt 1 is supported by a first support rod 2. The discharge end of the first conveyor belt 1 is connected to an inlet trough 3, which is located at the inlet end of the second conveyor belt 6. A first fixing rod 4 is fixedly connected to the frame of the second conveyor belt 6, and a triangular groove 5 for wrapping the packaging film is connected to the first fixing rod 4.

[0024] A sealing machine body 7 is fixed above the second conveyor belt 6 by a second support rod 8. The sealing machine body 7 is located downstream of the triangular groove 5. A rotating plate 10 is rotatably connected inside the sealing machine body 7 and a clamping plate 9 is slidably connected. The rotating plate 10 and the clamping plate 9 cooperate to perform preliminary sealing of the packaging film. A second fixed rod 12 is also mounted above the second conveyor belt 6. A fixed plate 13 is slidably connected to the second fixed rod 12. A sealing blade 1404 is detachably connected to the fixed plate 13 by a quick-release assembly 14. The controller 11 drives the fixed plate 13 to drive the sealing blade 1404 to reciprocate along the second fixed rod 12 to perform transverse sealing of the packaging film. A nitrogen filling mechanism is provided between the sealing machine body 7 and the sealing blade 1404. The outlet of the nitrogen filling mechanism faces the open end of the packaging film.

[0025] A cutting mechanism 16 is provided at the end of the third conveyor belt 15. The cutting mechanism 16 includes a motor 1606, an eccentric wheel 1607, a connecting rod 1605, a blade 1604, a baffle 1601, and a push rod 1602. The output shaft of the motor 1606 is connected to the eccentric wheel 1607. One end of the connecting rod 1605 is rotatably connected to the eccentric wheel 1607 through a third rotating rod 1608. The other end of the connecting rod 1605 is connected to the blade 1604. The blade 1604 is rotatably connected to the outer wall of the third conveyor belt 15 through a second rotating rod 1603. The push rod 1602 is used to push the baffle 1601, which positions and fixes the sealed packaging.

[0026] The motor 1606 of the cutting mechanism 16 is fixedly mounted on the frame of the third conveyor belt 15. An eccentric wheel 1607 is fixedly connected to the end of the output shaft of the motor 1606. One end of the connecting rod 1605 is rotatably connected to the rim of the eccentric wheel 1607 via a third rotating rod 1608. The other end of the connecting rod 1605 is fixedly connected to a blade 1604. The cutting edge of the blade 1604 faces the conveying surface of the third conveyor belt 15. The blade 1604 is also rotatably connected to the outer wall support of the third conveyor belt 15 via a second rotating rod 1603. This eccentric wheel 1607 linkage transmission structure, consisting of the motor 1606, the eccentric wheel 1607, the connecting rod 1605, and the blade 1604, can accurately convert the rotational motion of the motor 1606 into the reciprocating lifting and lowering cutting motion of the blade 1604, ensuring the stability of the cutting motion and the consistency of the cutting position.

[0027] Meanwhile, the baffle 1601 of the cutting mechanism 16 is located upstream of the cutting position of the blade 1604, and the push rod 1602 is located to the side of the baffle 1601. The push head of the push rod 1602 contacts the baffle 1601. Before the motor 1606 drives the blade 1604 to perform the cutting action, the push rod 1602 pushes the baffle 1601 to clamp and fix the package conveyed to the cutting position. This coordinated action of positioning before cutting ensures that the package will not shift during the cutting process and improves the cutting accuracy.

[0028] The quick-release assembly 14 is used to achieve quick connection and separation between the sealing cutter head 1404 and the fixing plate 13. The quick-release assembly 14 includes a threaded rod 1401, a first rotating rod 1402, and a knob 1403. The sealing cutter head 1404 has an internal threaded groove. One end of the threaded rod 1401 is machined with an external thread that matches the internal threaded groove. The other end of the threaded rod 1401 is coaxially fixed to one end of the first rotating rod 1402. The first rotating rod 1402 passes through and is rotatably installed in the fixing plate 13. The knob 1403 is threaded to the outer wall of the fixing plate 13 and is used to tighten or loosen the first rotating rod 1402. After loosening the first rotating rod 1402 by rotating the knob 1403, rotating the first rotating rod 1402 will drive the threaded rod 1401 to screw out or screw into the internal threaded groove of the sealing cutter head 1404. This structure makes it convenient and quick to replace the sealing cutter head 1404 without disassembling other complex parts.

[0029] In a preferred embodiment, above the second conveyor belt 6, between the triangular groove 5 and the second fixed rod 12, a sealing machine body 7 is fixed by a second support rod 8. The sealing machine body 7 is equipped with a heating component and a transmission mechanism. The transmission mechanism drives the rotating plate 10 and the clamping plate 9 to perform heat pressing on the packaging film passing under the sealing machine body 7, thereby completing the initial sealing of the longitudinal opening of the packaging film.

[0030] As another preferred embodiment, a nitrogen filling mechanism is provided between the sealing machine body 7 and the sealing head 1404. The nitrogen filling mechanism includes a pipe connected to an external nitrogen source and an outlet located at the end of the pipe. The outlet is positioned directly inside the packaging film tube that has not yet been laterally sealed by the sealing head 1404, so that nitrogen can be blown into the packaging before final sealing.

[0031] In another preferred embodiment, a first fixing rod 4 is fixed on the frame of the second conveyor belt 6, and a triangular groove 5 is fixedly connected to the first fixing rod 4. The triangular groove 5 has a V-shaped guide structure. When the flat packaging film passes through the triangular groove 5 under the drive of the second conveyor belt 6, the two sides of the packaging film will be folded upward by the V-shaped guide structure and gradually closed, wrapping the daylily located above the packaging film.

[0032] In another preferred embodiment, a first conveyor belt 1 is supported by a first support rod 2 at the upstream position of the second conveyor belt 6. The discharge end of the first conveyor belt 1 is connected to the feed trough 3. The feed trough 3 is a downwardly inclined guide trough. The daylily is conveyed by the first conveyor belt 1 and slides into the feed trough 3, and can fall smoothly onto the packaging film located below the feed trough 3.

[0033] Working principle: When packaging is required, fresh daylilies are first placed on the first conveyor belt 1. The first conveyor belt 1 runs and transports the daylilies to the feeding trough 3. The daylilies fall smoothly onto the packaging film running on the second conveyor belt 6. The packaging film and daylilies are transported forward with the second conveyor belt 6. When passing through the triangular groove 5, the two sides of the packaging film are folded upward by the V-shaped structure of the triangular groove 5, wrapping the daylilies into a cylindrical shape. Next, the cylindrical packaging film and daylily enter the lower part of the sealing machine body 7. The clamping plate 9 and the rotating plate 10 inside the sealing machine body 7 move to perform the first heat-sealing on the longitudinal opening of the packaging film, completing the initial sealing. Subsequently, the packaging continues to be conveyed forward. When it passes the air outlet of the nitrogen filling mechanism, the nitrogen filling mechanism blows nitrogen into the packaging tube to replace the air inside. Immediately afterwards, the control machine 11 drives the fixing plate 13 to drive the sealing cutter head 1404 to descend and perform a transverse heat-sealing on the packaging tube, sealing the nitrogen inside the packaging and completing the separation of the front and rear packages at the same time. The finished, continuously sealed packaging bags are conveyed to the third conveyor belt 15 and then forward to the cutting mechanism 16. At this point, the push rod 1602 pushes the baffle 1601 to extend, precisely positioning and clamping the packaging bag. Subsequently, the motor 1606 of the cutting mechanism 16 starts, driving the eccentric wheel 1607 to rotate. The eccentric wheel 1607, through the connecting rod 1605, drives the blade 1604 to reciprocate, precisely cutting the positioned packaging bag to complete the production of a single package. After cutting, the baffle 1601 resets under the action of the push rod 1602, and the finished package is sent out with the third conveyor belt 15. When a damaged sealing cutter head 1404 needs to be replaced, the worker only needs to rotate the knob 1403 of the quick-release assembly 14 to quickly release the first rotating rod 1402, and then rotate the first rotating rod 1402 to disengage the threaded rod 1401 from the sealing cutter head 1404, achieving quick replacement.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A nitrogen-filled packaging device for fresh daylily, comprising: The second conveyor belt (6) is used to transport the packaging film containing daylilies; The third conveyor belt (15) is connected in series downstream of the second conveyor belt (6); The control unit (11) and the second fixed rod (12) are mounted above the second conveyor belt (6); The fixing piece (13) is slidably connected to the second fixing rod (12); A sealing blade (1404), fixed to the fixing plate (13) and driven by the control unit (11) to perform lateral sealing of the packaging film, is characterized in that... The device further includes a cutting mechanism (16), which is disposed at the end of the third conveyor belt (15), and the cutting mechanism (16) includes: A baffle (1601) and a push rod (1602), wherein the push rod (1602) is used to push the baffle (1601) to position the sealed packaging; The motor (1606) and the eccentric wheel (1607) are connected to the output shaft of the motor (1606) via a transmission. The connecting rod (1605) is rotatably connected at one end to the eccentric wheel (1607) via the third rotating rod (1608). The blade (1604) is connected to the other end of the connecting rod (1605) and is rotatably connected to the outer wall of the third conveyor belt (15) via the second rotating rod (1603).

2. The nitrogen-filled packaging device for fresh daylilies according to claim 1, characterized in that, The sealing cutter head (1404) is detachably connected to the fixing plate (13) via a quick-release assembly (14). The quick-release assembly (14) includes a knob (1403), a first rotating rod (1402), and a threaded rod (1401). One end of the threaded rod (1401) is threaded into the groove of the sealing cutter head (1404), and the other end is connected to the first rotating rod (1402). The knob (1403) is used to lock the fixing plate (13).

3. The nitrogen-filled packaging device for fresh daylilies according to claim 1, characterized in that, The device also includes a sealing machine body (7), which is fixed above the second conveyor belt (6) by a second support rod (8), and the sealing machine body (7) is located upstream of the sealing cutter head (1404).

4. The nitrogen-filled packaging device for fresh daylilies according to claim 3, characterized in that, The sealing machine body (7) has a rotating plate (10) inside and a sliding plate (9) inside, which are used to perform preliminary sealing on the packaging film.

5. A nitrogen-filled packaging device for fresh daylilies according to claim 3, characterized in that, The device also includes a nitrogen filling mechanism, the outlet of which is located between the sealing machine body (7) and the sealing blade (1404).

6. The nitrogen-filled packaging device for fresh daylilies according to claim 1, characterized in that, The device further includes a first fixing rod (4) and a triangular groove (5), the first fixing rod (4) being fixed to the frame of the second conveyor belt (6), and the triangular groove (5) being connected to the first fixing rod (4).

7. A nitrogen-filled packaging device for fresh daylilies according to claim 6, characterized in that, The device further includes a first conveyor belt (1) and a feed trough (3). The first conveyor belt (1) is supported by a first support rod (2). The discharge end of the first conveyor belt (1) is connected to the feed trough (3). The feed trough (3) is located upstream of the triangular groove (5).

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