Soft material finished product packaging structure

By introducing the flipping function of a flipping machine into the finished packaging structure of soft materials, the folded edges of the rolled finished product are concealed, solving the problem of exposure in the existing technology, improving the convenience of packing and the aesthetic appearance of the product, and enhancing the consumer experience.

CN223999934UActive Publication Date: 2026-03-17DINGFAN INTELLIGENT EQUIP (FOSHAN CITY) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In the existing technology, the folded edges of the rolled product are exposed, resulting in the outer ends of the rolled product being bulging and the middle being concave. This makes packing inconvenient and the product's appearance unattractive, leading to a poor consumer experience.

Method used

A packaging structure for finished soft materials was designed, including a feeding table, a film-wrapping machine, a transition table, a compressor, a folding machine, a flipping machine, and a rolling machine. The flipping machine's flipping function makes the neatly folded finished product have its folded edges concealed after rolling, and its outer circle smooth and neat. The product is fed into the rolling machine after being flipped 180 degrees by the flipping machine.

Benefits of technology

This design achieves concealed inner edges, smooth and neat outer circles, convenient packaging, and an attractive product appearance, thus enhancing the consumer experience.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223999934U_ABST
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Abstract

The utility model relates to the technical field of soft material packaging, in particular to a soft material finished product packaging structure which comprises a feeding table, a film sleeving machine, a transition table, a compressor, an edge folding machine, a plate turnover machine and a rolling machine. The feeding end of the film sleeving machine is in butt joint with the feeding table, the discharging end of the film sleeving machine is in butt joint with the feeding end of the transition table, the discharging end of the transition table is in butt joint with the feeding end of the compressor, the discharging end of the compressor is in butt joint with the feeding end of the edge folding machine, the discharging end of the edge folding machine is in butt joint with the feeding end of the plate turnover machine, and the discharging end of the plate turnover machine is in butt joint with the feeding end of the rolling machine. By means of the arrangement, a finished product is fed to the film sleeving machine through the feeding table to be subjected to film sleeving, the finished product subjected to film sleeving is fed into the compressor to be compressed through the transition table, the compressed finished product is subjected to edge folding through the edge folding machine, the edge-folded finished product is overturned through the plate overturning machine and then fed into the rolling machine to be rolled and discharged, the folded edge of the rolled finished product is hidden, the outer circle of the rolled finished product is smooth and tidy, and boxing is convenient. And the product is attractive in appearance, and better consumption experience is brought to consumers.
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Description

Technical Field

[0001] This utility model relates to the field of soft material packaging technology, and specifically to a packaging structure for finished soft materials. Background Technology

[0002] Sofas, mattresses and other products are all made of soft materials. After they are made into finished products, they need to be packaged for shipment. The packaging process generally includes film covering, compression, edge folding and rolling. That is, the finished product is covered with film, then the film-covered finished product is compressed, then the compressed finished product is folded, and finally the folded finished product is rolled into a roll for easy packing and shipment.

[0003] Currently, existing packaging structures typically consist of a film-wrapping machine, a compressor, a folding edge, and a rolling machine arranged sequentially. This structure has the following drawbacks: after the product is wrapped in film and compressed, the excess edges on both sides of the compressed product are folded, and then it is fed into the rolling machine for rolling. The folded edges of the rolled product are exposed, resulting in the outer ends of the rolled product being bulging and the middle being concave. This makes packing inconvenient and the product's appearance unattractive, leading to a poor consumer experience.

[0004] Therefore, there is still room for improvement in existing technologies. Utility Model Content

[0005] To address the problem that in existing technologies, the rolled-up finished products have exposed folded edges, resulting in bulging ends and a concave middle, making packing inconvenient and causing an unattractive product appearance, thus providing a poor consumer experience, this utility model proposes a packaging structure for finished soft materials.

[0006] To achieve the above objectives, the technical solution applied in this utility model is as follows:

[0007] A packaging structure for finished flexible materials includes a feeding platform, a film-wrapping machine, a transition platform, a compressor, a folding machine, a flipping machine, and a rolling machine. The feeding end of the film-wrapping machine is connected to the feeding platform, the discharging end of the film-wrapping machine is connected to the feeding end of the transition platform, the discharging end of the transition platform is connected to the feeding end of the compressor, the discharging end of the compressor is connected to the feeding end of the folding machine, the discharging end of the folding machine is connected to the feeding end of the flipping machine, and the discharging end of the flipping machine is connected to the feeding end of the rolling machine.

[0008] According to the above scheme, the flipping machine includes a base, a rotating frame, a fixed conveyor belt, and a movable conveyor belt; the fixed conveyor belt is fixedly mounted on the rotating frame, and the movable conveyor belt is movably mounted on the rotating frame, with the movable conveyor belt located above the fixed conveyor belt; a finished product conveying channel is provided between the movable conveyor belt and the fixed conveyor belt, and the movable conveyor belt is driven to rise and fall relative to the fixed conveyor belt by a first driving device, so that the movable conveyor belt and the fixed conveyor belt cooperate to clamp and convey the finished product; the rotating frame is mounted on the base and can be flipped in both directions, and the base is provided with a second driving device for driving the rotating frame to flip in both directions.

[0009] According to the above scheme, a fixed frame is fixed on the rotating frame, the first driving device includes multiple cylinders fixed on the fixed frame, a movable frame is fixed on the movable conveyor belt, the movable frame is movably located below the fixed frame, and the output end of the cylinder is fixedly connected to the movable frame.

[0010] According to the above scheme, multiple guide sleeves are fixed on the fixed frame, the guide sleeves are located on one side of the cylinder, and multiple guide rods are fixed on the movable frame, the guide rods being slidably connected to the guide sleeves.

[0011] According to the above scheme, multiple vertically arranged guide racks are fixed on the rotating frame, and multiple guide gears are fixed on the movable conveyor belt. The guide gears are meshed with the guide racks.

[0012] According to the above scheme, the second driving device includes a drive shaft, a driven shaft, a first motor, and a chain; the drive shaft and the driven shaft are rotatably disposed on both sides of the base through multiple bearing seats, the two ends of the drive shaft are respectively fixed with a first sprocket, the two ends of the driven shaft are respectively fixed with a second sprocket, the first end of the chain is fixed to the rotating frame, the second end of the chain is wound around the first sprocket and the second sprocket and then fixed to the rotating frame, and the drive shaft is driven to rotate by the first motor.

[0013] According to the above scheme, the rotating frame is formed with a limiting groove for accommodating the chain, and the base is movably provided with a plurality of first guide rollers and a plurality of second guide rollers. The first guide rollers are located above the first sprocket, and the second guide rollers are located above the second sprocket. The first guide rollers and the second guide rollers are respectively movably connected to the limiting groove.

[0014] According to the above scheme, the movable conveyor belt includes a first conveyor belt, a first main drive wheel, and a first auxiliary drive wheel; the first conveyor belt is wound around the first main drive wheel and the first auxiliary drive wheel, and a second motor is fixed on the movable conveyor belt by a first mounting bracket. A first drive wheel is fixed at the output end of the second motor, and the first drive wheel and the first main drive wheel are connected by a first transmission toothed belt.

[0015] According to the above scheme, the fixed conveyor belt includes a second conveyor belt, a second main drive wheel, and a second auxiliary drive wheel; the second conveyor belt is wound around the second main drive wheel and the second auxiliary drive wheel, and a third motor is fixed on the fixed conveyor belt by a second mounting bracket. A second drive wheel is fixed at the output end of the third motor, and the second drive wheel and the second main drive wheel are connected by a second transmission toothed belt.

[0016] According to the above scheme, the rotating frame includes a first circular support and a second circular support. The first circular support and the second circular support are fixedly connected by multiple crossbeams, and the rotating frame can be rotated 180 degrees in both directions.

[0017] The beneficial effects of this utility model are:

[0018] This invention is designed such that the finished product is first fed onto the feeding platform and then onto the film-coating machine for film coating. After film coating, the finished product is sent to the compressor via the transition platform for compression. The compressed finished product is then folded neatly on both sides by the folding machine. After the folding is neat, the finished product is flipped 180 degrees by the flipping machine and then sent to the rolling machine for rolling and unloading. The rolled finished product has concealed folds and a smooth and neat outer circle, making it convenient for packaging and giving the product an attractive appearance, thus providing consumers with a better consumer experience. Attached Figure Description

[0019] Figure 1 This is a front view of the overall structure of this utility model;

[0020] Figure 2 This is a top view of the overall structure of this utility model;

[0021] Figure 3 This is a three-dimensional view of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the flip-board machine of this utility model;

[0023] Figure 5 yes Figure 4 Enlarged view of position A in the middle;

[0024] Figure 6 yes Figure 4 Enlarged view of position B in the middle;

[0025] Figure 7 yes Figure 4 Enlarged view of position C in the middle;

[0026] Figure 8 yes Figure 4 Enlarged view of position D in the middle.

[0027] In the picture:

[0028] 10. Feeding platform; 20. Film wrapping machine; 30. Transition table; 40. Compressor; 50. Folding machine; 60. Turning machine; 70. Rolling machine; 61. Base; 62. Rotating frame; 63. Fixed conveyor belt; 64. Movable conveyor belt; 65. Fixed frame; 66. Movable frame; 67. Cylinder; 68. Guide rod; 69. Guide sleeve; 610. Drive shaft; 611. Bearing seat; 612. First motor; 613. First sprocket; 614. First guide roller; 615. Chain; 616. Second motor; 6 17. First drive wheel; 618. First main drive wheel; 619. Guide gear; 620. Guide rack; 621. Third motor; 622. Second drive wheel; 623. Second main drive wheel; 624. Driven shaft; 625. Second sprocket; 626. Second guide roller; 627. Limiting groove; 628. First auxiliary drive wheel; 629. First mounting bracket; 630. Second auxiliary drive wheel; 631. Second mounting bracket; 632. First circular bracket; 633. Second circular bracket; 634. Crossbeam. Detailed Implementation

[0029] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 8 As shown, the packaging structure for finished soft materials of this utility model includes a feeding platform 10, a film-wrapping machine 20, a transition platform 30, a compressor 40, a folding machine 50, a flipping machine 60, and a rolling machine 70. The feeding end of the film-wrapping machine 20 is connected to the feeding platform 10, the discharging end of the film-wrapping machine 20 is connected to the feeding end of the transition platform 30, the discharging end of the transition platform 30 is connected to the feeding end of the compressor 40, the discharging end of the compressor 40 is connected to the feeding end of the folding machine 50, the discharging end of the folding machine 50 is connected to the feeding end of the flipping machine 60, and the discharging end of the flipping machine 60 is connected to the feeding end of the rolling machine 70. With this setup, the finished product is first fed onto the film-coating machine 20 via the feeding table 10. After film coating, the finished product is sent to the compressor 40 via the transition table 30 for compression. The compressed finished product is then folded neatly on both sides by the folding machine 50. After the folding is neat, the finished product is flipped by the flipping machine 60 and sent to the rolling machine 70 for rolling and unloading. The rolled finished product has concealed folds and a smooth and neat outer circle, making it convenient for packing and giving the product an attractive appearance, thus providing consumers with a better consumer experience.

[0031] Furthermore, the flipping machine 60 includes a base 61, a rotating frame 62, a fixed conveyor belt 63, and a movable conveyor belt 64; the fixed conveyor belt 63 is fixedly mounted on the rotating frame 62, and the movable conveyor belt 64 is movably mounted on the rotating frame 62, with the movable conveyor belt 64 located above the fixed conveyor belt 63; a finished product conveying channel is provided between the movable conveyor belt 64 and the fixed conveyor belt 63, and the movable conveyor belt 64 is driven to rise and fall relative to the fixed conveyor belt 63 by a first driving device, so that the movable conveyor belt 64 and the fixed conveyor belt 63 cooperate to clamp and convey the finished product; the rotating frame 62 is mounted on the base 61 and can be flipped in both directions, and the base 61 is provided with a second driving device for driving the rotating frame 62 to flip in both directions. With this configuration, after the finished product is neatly folded, it is fed into the finished product conveying channel between the movable conveyor belt 64 and the fixed conveyor belt 63. Driven by the first drive device, the movable conveyor belt 64 moves towards the fixed conveyor belt 63, cooperating with the fixed conveyor belt 63 to clamp the finished product for conveying. During the conveying process, the second drive device drives the rotating frame 62 to rotate as a whole, so that the finished product discharged from the finished product conveying channel to the winding machine 70 is rotated, facilitating winding and discharge by the winding machine 70. After the finished product is discharged from the conveying channel, the movable conveyor belt 64, driven by the first drive device, moves away from the fixed conveyor belt 63 and resets, facilitating the reception of the next finished product. Specifically, the first drive device drives the movable conveyor belt 64 to close or open relative to the fixed conveyor belt 63.

[0032] Furthermore, a fixed frame 65 is fixed on the rotating frame 62, and the first driving device includes multiple cylinders 67 fixed on the fixed frame 65. A movable frame 66 is fixed on the movable conveyor belt 64, and the movable frame 66 is movably located below the fixed frame 65. The output ends of the cylinders 67 are fixedly connected to the movable frame 66. With this configuration, the movable frame 66 is driven by the multiple cylinders 67 to drive the movable conveyor belt 64 to rise and fall relative to the fixed conveyor belt 63.

[0033] Furthermore, multiple guide sleeves 69 are fixed on the fixed frame 65, and the guide sleeves 69 are located on one side of the cylinder 67. Multiple guide rods 68 are fixed on the movable frame 66, and the guide rods 68 are slidably connected to the guide sleeves 69. This arrangement ensures that when the movable frame 66 drives the movable conveyor belt 64 to rise and fall, the rise and fall are vertical, resulting in more stable lifting and lowering.

[0034] Furthermore, the rotating frame 62 is fixed with multiple vertically arranged guide racks 620, and the movable conveyor belt 64 is fixed with multiple guide gears 619, which mesh with the guide racks 620. This arrangement, through the meshing connection between the guide gears 619 and the guide racks 620, facilitates precise control of the lifting position of the movable conveyor belt 64.

[0035] In practical applications, the guide rack 620 or guide gear 619 is equipped with a position sensor.

[0036] Furthermore, the second driving device includes a drive shaft 610, a driven shaft 624, a first motor 612, and a chain 615. The drive shaft 610 and the driven shaft 624 are rotatably disposed on both sides of the base 61 via multiple bearing seats 611. The two ends of the drive shaft 610 are respectively fixed with a first sprocket 613, and the two ends of the driven shaft 624 are respectively fixed with a second sprocket 625. The first end of the chain 615 is fixed to the rotating frame 62, and the second end of the chain 615 is wound around the first sprocket 613 and the second sprocket 625 and then fixed to the rotating frame 62. The drive shaft 610 is driven to rotate by the first motor 612. With this configuration, when the first motor 612 is working, it drives the drive shaft 610 to rotate. The rotation of the drive shaft 610 drives the first sprocket 613 to rotate. When the first sprocket 613 rotates, it drives the second sprocket 625 to rotate under the linkage of the chain 615. At this time, the drive shaft 610 and the driven shaft 624 rotate synchronously. During the rotation, the first sprocket 613 and the second sprocket 625 change position with the chain 615 at the same time. Since both ends of the chain 615 are fixed on the rotating frame 62, when the chain 615 changes position with the first sprocket 613 and the second sprocket 625, the chain 615 drives the rotating frame 62 to rotate as a whole.

[0037] In practical applications, the output end of the first motor 612 and the drive shaft 610 are respectively equipped with gears, and the two gears are driven by a toothed belt.

[0038] Furthermore, the rotating frame 62 is formed with a limiting groove 627 for accommodating the chain 615. The base 61 is movably equipped with multiple first guide rollers 614 and multiple second guide rollers 626. The first guide rollers 614 are located above the first sprocket 613, and the second guide rollers 626 are located above the second sprocket 625. The first guide rollers 614 and the second guide rollers 626 are movably connected to the limiting groove 627, respectively. This arrangement, with the first guide rollers 614 and the second guide rollers 626 movably connected to the limiting groove 627, makes the rotating frame 62 rotate more smoothly. When the rotating frame 62 rotates, it cooperates with the first guide rollers 614 and the second guide rollers 626 for limiting, and also cooperates with the chain 615, the first sprocket 613, and the second sprocket 625. Therefore, the rotating frame 62 will not move back and forth during rotation, but will only rotate axially in the same position.

[0039] In practical applications, the first guide roller 614 and the second guide roller 626 are respectively rolled within the limiting groove 627.

[0040] Furthermore, the movable conveyor belt 64 includes a first conveyor belt, a first main drive wheel 618, and a first auxiliary drive wheel 628. The first conveyor belt is wound around the first main drive wheel 618 and the first auxiliary drive wheel 628. A second motor 616 is fixed to the movable conveyor belt 64 via a first mounting bracket 629. A first drive wheel 617 is fixed to the output end of the second motor 616. The first drive wheel 617 and the first main drive wheel 618 are connected by a first transmission toothed belt. With this configuration, when the second motor 616 is working, the first drive wheel 617 drives the first transmission toothed belt and the first main drive wheel 618 to rotate. When the first main drive wheel 618 rotates, it drives the first conveyor belt and the first auxiliary drive wheel 628 to rotate, thus enabling the first conveyor belt to cooperate with the fixed conveyor belt 63 to transport the finished product.

[0041] In practical applications, after the cylinder 67 drives the movable frame 66 to lower the movable conveyor belt 64 relative to the fixed conveyor belt 63, the finished product is clamped by the movable conveyor belt 64 and the fixed conveyor belt 63, and then the second motor 616 works.

[0042] Furthermore, the fixed conveyor belt 63 includes a second conveyor belt, a second main drive wheel 623, and a second auxiliary drive wheel 630. The second conveyor belt is wound around the second main drive wheel 623 and the second auxiliary drive wheel 630. A third motor 621 is fixed to the fixed conveyor belt 63 via a second mounting bracket 631. A second drive wheel 622 is fixed to the output end of the third motor 621. The second drive wheel 622 and the second main drive wheel 623 are connected by a second transmission toothed belt. With this configuration, when the third motor 621 is working, the second drive wheel 622 drives the second transmission toothed belt and the second main drive wheel 623 to rotate. When the second main drive wheel 623 rotates, it drives the second conveyor belt and the second auxiliary drive wheel 630 to rotate, thus enabling the second conveyor belt to cooperate with the movable conveyor belt 64 to transport the finished product.

[0043] In practical applications, after the cylinder 67 drives the movable frame 66 to lower the movable conveyor belt 64 relative to the fixed conveyor belt 63, the finished product is clamped by the movable conveyor belt 64 and the fixed conveyor belt 63, and then the third motor 621 works.

[0044] Furthermore, the rotating frame 62 includes a first circular support 632 and a second circular support 633, which are fixedly connected by multiple crossbeams 634. The rotating frame 62 can rotate 180 degrees in both directions. This arrangement makes the overall rotation of the rotating frame 62 more convenient, and the 180-degree rotation angle allows the finished product to be flipped 180 degrees.

[0045] In practical applications, chains 615 are fixed on the first circular bracket 632 and the second circular bracket 633 respectively, and are tactilely connected to the first guide roller 614 and the second guide roller 626 respectively.

[0046] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A soft material finished product packaging structure characterized in that: It comprises a feeding table (10), a film wrapping machine (20), a transition table (30), a compressor (40), a flanging machine (50), a turning plate machine (60) and a rolling machine (70); the feeding end of the film wrapping machine (20) is connected with the feeding table (10), the discharging end of the film wrapping machine (20) is connected with the feeding end of the transition table (30), the discharging end of the transition table (30) is connected with the feeding end of the compressor (40), the discharging end of the compressor (40) is connected with the feeding end of the flanging machine (50), the discharging end of the flanging machine (50) is connected with the feeding end of the turning plate machine (60), and the discharging end of the turning plate machine (60) is connected with the feeding end of the rolling machine (70).

2. A soft material finished product packaging structure according to claim 1, characterized in that: The turning plate machine (60) comprises a base (61), a rotating frame (62), a fixed conveying belt (63) and a movable conveying belt (64); the fixed conveying belt (63) is fixedly arranged on the rotating frame (62), the movable conveying belt (64) is movably arranged on the rotating frame (62), and the movable conveying belt (64) is located above the fixed conveying belt (63); a finished product conveying channel is arranged between the movable conveying belt (64) and the fixed conveying belt (63), the movable conveying belt (64) is driven to lift relative to the fixed conveying belt (63) by a first driving device, so that the movable conveying belt (64) and the fixed conveying belt (63) cooperate to clamp the finished product for conveying; the rotating frame (62) is reversibly arranged on the base (61), and the base (61) is provided with a second driving device for driving the rotating frame (62) to reversibly turn over.

3. A package structure for a finished product of a soft material according to claim 2, wherein: A fixed frame (65) is fixedly arranged on the rotating frame (62), the first driving device comprises a plurality of air cylinders (67) fixed on the fixed frame (65), an activity frame (66) is fixedly arranged on the movable conveying belt (64), the activity frame (66) is movably arranged below the fixed frame (65), and the output end of the air cylinder (67) is fixedly connected with the activity frame (66).

4. A package structure for a finished product of a soft material according to claim 3, wherein: A plurality of guide sleeves (69) are fixedly arranged on the fixed frame (65), the guide sleeves (69) are located on one side of the air cylinder (67), a plurality of guide rods (68) are fixedly arranged on the activity frame (66), and the guide rods (68) are slidably connected with the guide sleeves (69).

5. A package structure for a finished product of a soft material according to claim 3, wherein: A plurality of vertical guide racks (620) are fixedly arranged on the rotating frame (62), and a plurality of guide gears (619) are fixedly arranged on the movable conveying belt (64), the guide gears (619) are meshingly connected with the guide racks (620).

6. A soft material finished product packaging structure according to claim 2, wherein: The second driving device comprises a driving shaft (610), a driven shaft (624), a first motor (612) and a chain (615); the driving shaft (610) and the driven shaft (624) are rotatably arranged on the two sides of the base (61) through a plurality of bearing seats (611), the two ends of the driving shaft (610) are respectively fixed with first chain wheels (613), the two ends of the driven shaft (624) are respectively fixed with second chain wheels (625), the first end of the chain (615) is fixed on the rotating frame (62), the second end of the chain (615) is wound on the first chain wheels (613) and the second chain wheels (625) and then fixed on the rotating frame (62), and the driving shaft (610) is driven to rotate by the first motor (612).

7. A package structure for a finished product of a soft material according to claim 6, wherein: The rotating frame (62) is formed with a limiting groove (627) for accommodating the chain (615), the base (61) is movably provided with a plurality of first guide rollers (614) and a plurality of second guide rollers (626), the first guide rollers (614) are located above the first chain wheels (613), the second guide rollers (626) are located above the second chain wheels (625), and the first guide rollers (614) and the second guide rollers (626) are movably connected with the limiting groove (627).

8. A soft material finished product packaging structure according to claim 2, wherein: The movable conveying belt (64) comprises a first conveying belt, a first main transmission wheel (618) and a first auxiliary transmission wheel (628); the first conveying belt is wound on the first main transmission wheel (618) and the first auxiliary transmission wheel (628), the movable conveying belt (64) is fixed with a second motor (616) through a first mounting bracket (629), the output end of the second motor (616) is fixed with a first driving wheel (617), and the first driving wheel (617) and the first main transmission wheel (618) are drivingly connected through a first transmission toothed belt.

9. A soft material finished product packaging structure according to claim 2, wherein: The fixed conveying belt (63) comprises a second conveying belt, a second main transmission wheel (623) and a second auxiliary transmission wheel (630); the second conveying belt is wound on the second main transmission wheel (623) and the second auxiliary transmission wheel (630), the fixed conveying belt (63) is fixed with a third motor (621) through a second mounting bracket (631), the output end of the third motor (621) is fixed with a second driving wheel (622), and the second driving wheel (622) and the second main transmission wheel (623) are drivingly connected through a second transmission toothed belt.

10. A soft material finished product packaging structure according to claim 2, wherein: The rotating frame (62) comprises a first circular support (632) and a second circular support (633), the first circular support (632) and the second circular support (633) are fixedly connected through a plurality of cross beams (634), and the rotating frame (62) is reversibly turned by an angle of 180 degrees.