A large bag mouth winding and tightening device
By designing a large packaging bag wrapping and tightening device, and adopting a vertical lifting and rotating mechanism, the problem of loose wrapping of large packaging bags by existing equipment has been solved, and the tight wrapping and efficient automated sealing of the bag opening has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI DADONG MACHINERY MFG
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing automated sealing equipment is poorly adapted to large packaging bags, resulting in loose wrapping that can easily cause the bag opening to come undone, affecting product quality.
A device for wrapping and tightening the opening of large packaging bags was designed. It adopts a vertical lifting mechanism and a rotating mechanism. Through two-stage lifting and servo motor-driven gear meshing, the grippers are opened/clamped synchronously and rotated at a uniform speed to ensure that the bag opening is tightly wrapped.
It achieves tight wrapping of large packaging bag openings, preventing bag deformation and improving the efficiency and quality of automated sealing.
Smart Images
Figure CN224529184U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automated packaging equipment technology, specifically relating to a device for wrapping and tightening the opening of a large packaging bag. Background Technology
[0002] In actual production, large packaging bags are widely used, such as in agricultural planting, food processing, and chemical raw material transportation. To ensure that the contents of the packaging bags are not contaminated or leaked during transportation and storage, the bag openings usually need to be tightly sealed. Traditional sealing methods are mostly manual, such as using ropes or plastic cable ties, which is not only inefficient but also prone to loosening due to improper operation, affecting product quality. Furthermore, with the increase in automation, more and more industries are beginning to adopt automated equipment for packaging operations to improve production efficiency and reduce labor costs.
[0003] Existing automated sealing equipment is mostly designed for small-sized packaging and has poor adaptability to large packaging bags. The winding mechanism and lifting mechanism have poor coordination, which can easily lead to loose wrapping. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides a large packaging bag opening wrapping and tightening device, which solves the problem of loose wrapping.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for wrapping and tightening the opening of a large packaging bag, comprising: U-shaped frame; Horizontal movement mechanism; The vertical lifting mechanism is installed inside the horizontal moving mechanism; Rotating mechanism; Gripper mechanism; A conveying mechanism, located below the gripper mechanism; The vertical lifting mechanism includes: A lifting cylinder is provided, with a fixed plate fixedly connected to its bottom end; an extension rod is fixedly connected to the lower surface of the fixed plate, and an installation plate is sleeved on the surface of the extension rod. The second lifting cylinder is fixedly installed inside the mounting plate. The gripper mechanism includes: Mounting plate one, wherein a folding plate is movably mounted on the surface of the mounting plate one; Mounting plate two is rotatably mounted on the surface of the piston rod of lifting cylinder two. The inside of mounting plate two is movably mounted with a gripper, and one end of the folding plate is movably connected to the gripper.
[0006] Preferably, the vertical lifting mechanism further includes: The nut is provided with an external thread on the outer surface of the extension rod, and the nut is threadedly connected to the extension rod through the external thread.
[0007] Preferably, the rotating mechanism includes: Servo motor 2 is fixedly installed on the upper surface of the mounting plate. A reducer is fixedly connected to the output end of servo motor 2, and gear 1 is fixedly connected to the output end of the reducer. Gear 2 is rotatably mounted on the surface of the lifting cylinder 2, and its bottom is fixedly connected to the mounting plate 1, and gear 2 meshes with gear 1.
[0008] Preferably, the horizontal moving mechanism includes: Servo motor one is fixedly installed on one side of the frame, and a lead screw is fixedly connected to the output end of servo motor one; The guide rod is fixedly connected to the U-shaped frame at both ends, and a sliding seat is slidably installed on the surface of the guide rod.
[0009] Preferably, the lead screw is threadedly connected to the slide block, and the lifting cylinder is vertically installed inside the slide block.
[0010] Preferably, the folding plates and grippers are arranged in a circular array.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This large packaging bag wrapping and tightening device features a vertical lifting mechanism with two stages of lifting. Lifting cylinder one drives the fixed plate, extension rod, and mounting plate to lift as a whole, providing primary lifting and bringing the grippers close to the bag opening. Lifting cylinder two, embedded in the mounting plate, drives the rotating mechanism and gripper mechanism for secondary micro-lifting. The mounting plate two rotates in conjunction with the piston rod of lifting cylinder two. When the piston rod extends or retracts, multiple grippers open / close synchronously through a folding plate linkage, allowing lifting cylinder two to precisely control the gripper's clamping effect and prevent bag opening deformation. The rotating mechanism, powered by servo motor two via a reducer, meshes with gear one and gear two, driving mounting plate one to rotate at a uniform speed, thus wrapping the large packaging bag opening. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model, used together with the embodiments of this utility model to explain this utility model, and do not constitute a limitation on this utility model. In the drawings: Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 This is a top view structural diagram of the present invention; Figure 3 This is a structural diagram of the present invention from a lower perspective; Figure 4 This is a partial structural diagram of the present invention.
[0013] In the picture: 1. U-shaped frame; 2. Horizontal moving mechanism; 201. Servo motor 1; 202. Lead screw; 203. Guide rod; 204. Slide block; 3. Vertical lifting mechanism; 301. Lifting cylinder one; 302. Fixing plate; 303. Extension rod; 304. Mounting plate; 305. Lifting cylinder two; 306. Nut; 4. Rotating mechanism; 401. Servo motor II; 402. Reducer; 403. Gear I; 404. Gear II; 5. Gripper mechanism; 501. Mounting plate one; 502. Folding plate; 503. Mounting plate two; 504. Gripper; 6. Conveying mechanism. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0015] Example Please see Figure 1-4 This utility model provides the following technical solution: a device for wrapping and tightening the opening of a large packaging bag, comprising: Frame 1; Horizontal moving mechanism 2; The vertical lifting mechanism 3 is installed inside the horizontal moving mechanism 2; Rotating mechanism 4; Gripper mechanism 5; The vertical lifting mechanism 3 includes: Lifting cylinder 301, with a fixing plate 302 fixedly connected to the bottom end of lifting cylinder 301; an extension rod 303 is fixedly connected to the lower surface of fixing plate 302, and an mounting plate 304 is sleeved on the surface of extension rod 303. Lifting cylinder 2 305 is fixedly installed inside mounting plate 304; The gripper mechanism 5 includes: Mounting plate 501, with a folding plate 502 movably mounted on its surface; Mounting disc 2 503 is rotatably mounted on the surface of piston rod of lifting cylinder 2 305. Inside mounting disc 2 503, gripper 504 is movably mounted, and one end of folding plate 502 is movably connected to gripper 504.
[0016] The present invention provides a technical solution in which the vertical lifting mechanism 3 has two-stage lifting. The first lifting cylinder 301 drives the fixed plate 302, the extension rod 303 and the mounting plate 304 to lift as a whole, which is the first stage of lifting, allowing the gripper 504 to approach the bag opening. The second lifting cylinder 305 is embedded in the mounting plate 304 and drives the rotating mechanism 4 and the gripper mechanism 5 to perform a second micro-lifting. The second mounting plate 503 and the piston rod of the second lifting cylinder 305 rotate in cooperation. When the piston rod extends or retracts, the multiple grippers 504 open / close synchronously through the linkage of the folding plate 502. Thus, the second lifting cylinder 305 can precisely control the gripping effect of the grippers 504 and avoid bag opening deformation. The rotating mechanism 4 is output by the second servo motor 401 through the reducer 402. Through the meshing of the first gear 403 and the second gear 404, the first mounting plate 501 is driven to rotate at a uniform speed to achieve the wrapping of the bag opening of the large packaging bag.
[0017] Furthermore, the conveying mechanism 6 is located below the gripper mechanism 5.
[0018] Specifically, the conveyor mechanism 6 can horizontally transport large packaging bags that need to be sealed. It uses a roller or chain conveyor line. Once the bag is in place, a photoelectric switch sends a signal and the device starts automatically.
[0019] Furthermore, the vertical lifting mechanism 3 also includes: Nut 306 and extension rod 303 are provided with external threads on their outer surfaces. Nut 306 is threadedly connected to extension rod 303 through the external threads.
[0020] Specifically, the external thread of the extension rod 303 mates with the nut 306, allowing the initial height of the mounting plate 304 to be manually adjusted when the machine is stopped to accommodate different bag lengths, or the mounting plate 304 can be removed for partial maintenance.
[0021] Furthermore, the rotating mechanism 4 includes: Servo motor 2 401 is fixedly installed on the upper surface of mounting plate 304. The output end of servo motor 2 401 is fixedly connected to reducer 402, and the output end of reducer 402 is fixedly connected to gear 1 403. Gear 2 404 is rotatably mounted on the surface of lifting cylinder 2 305, and its bottom is fixedly connected to mounting plate 1 501, and gear 2 404 meshes with gear 1 403.
[0022] Specifically, servo motor 401 drives gear 403 via reducer 402, which in turn drives gear 404 and mounting plate 501 to rotate, thereby causing folding plate 502 and gripper 504 to rotate, and the bag opening held by gripper 504 to be wrapped.
[0023] Furthermore, the horizontal movement mechanism 2 includes: Servo motor 201 is fixedly installed on one side of the frame 1, and the output end of servo motor 201 is fixedly connected to lead screw 202; The guide rod 203 is fixedly connected to the U-shaped frame 1 at both ends, and a slide seat 204 is slidably installed on the surface of the guide rod 203.
[0024] Furthermore, the lead screw 202 is threadedly connected to the slide 204, and the lifting cylinder 301 is vertically installed inside the slide 204.
[0025] Specifically, the servo motor 201 drives the lead screw 202 to rotate, thereby enabling the slide 204 to move and be positioned precisely in the X direction along the guide rod 203, which is beneficial for adjusting the horizontal position of the vertical lifting mechanism 3, the rotating mechanism 4 and the gripper mechanism.
[0026] Furthermore, both the folding plate 502 and the gripper 504 are arranged in a circular array.
[0027] Specifically, the circular array arrangement ensures that the bag opening is subjected to uniform force, preventing tearing during rotation.
[0028] The working principle or usage process of this utility model is as follows: When using this utility model, firstly, the servo motor 201 is started, causing the slide 204 to move the entire device to a suitable distance. Then, the filled large bag is conveyed by the conveying mechanism 6. After the photoelectric switch detects the bag, it sends a signal, the lifting cylinder 301 extends, the gripper mechanism 5 descends to the bag opening, the lifting cylinder 305 retracts, and the gripper 504 clamps the bag opening through the linkage of the folding plate 502. The servo motor 401 outputs through the reducer 402, and through the meshing of gear 403 and gear 404, it drives the mounting plate 501 to rotate at a uniform speed, realizing the wrapping of the large packaging bag opening. Finally, all mechanisms are reset, and the conveying mechanism 6 sends out the sealed large bag to enter the next process. The electrical equipment in this device is all externally powered and is controlled by the matching control switch to operate and shut down.
[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of this utility model and are not intended to limit the utility model. The selection and detailed description of these embodiments in this specification are for the purpose of better explaining the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for wrapping and securing the opening of a large packaging bag, characterized in that, include: U-shaped frame (1); Horizontal movement mechanism (2); The vertical lifting mechanism (3) is installed inside the horizontal moving mechanism (2); Rotating mechanism (4); Gripper mechanism (5); A conveying mechanism (6) is located below the gripper mechanism (5); The vertical lifting mechanism (3) includes: A lifting cylinder (301) is provided, and a fixing plate (302) is fixedly connected to the bottom end of the lifting cylinder (301); an extension rod (303) is fixedly connected to the lower surface of the fixing plate (302), and an installation plate (304) is sleeved on the surface of the extension rod (303). Lifting cylinder two (305) is fixedly installed inside the mounting plate (304); The gripper mechanism (5) includes: Mounting plate one (501), wherein a folding plate (502) is movably mounted on the surface of the mounting plate one (501); Mounting disc two (503) is rotatably mounted on the surface of the piston rod of lifting cylinder two (305). The mounting disc two (503) has a gripper (504) movably mounted inside, and one end of the folding plate (502) is movably connected to the gripper (504).
2. The large packaging bag opening wrapping and tightening device according to claim 1, characterized in that, The vertical lifting mechanism (3) also includes: Nut (306), the outer surface of the extension rod (303) is provided with external thread, and the nut (306) is threadedly connected to the extension rod (303) through the external thread.
3. The large packaging bag opening wrapping and tightening device according to claim 1, characterized in that, The rotating mechanism (4) includes: Servo motor 2 (401) is fixedly installed on the upper surface of mounting plate (304). The output end of servo motor 2 (401) is fixedly connected to reducer (402), and the output end of reducer (402) is fixedly connected to gear 1 (403). Gear 2 (404) is rotatably mounted on the surface of the lifting cylinder 2 (305), and its bottom is fixedly connected to the mounting plate 1 (501), and gear 2 (404) meshes with gear 1 (403).
4. The large packaging bag opening wrapping and tightening device according to claim 1, characterized in that, The horizontal movement mechanism (2) includes: Servo motor 1 (201) is fixedly installed on one side of the U-shaped frame (1), and a lead screw (202) is fixedly connected to the output end of the servo motor 1 (201). The guide rod (203) is fixedly connected to the U-shaped frame (1) at both ends, and a slide seat (204) is slidably installed on the surface of the guide rod (203).
5. The large packaging bag opening wrapping and tightening device according to claim 4, characterized in that: The lead screw (202) is threadedly connected to the slide (204), and the lifting cylinder (301) is vertically installed inside the slide (204).
6. The large packaging bag opening wrapping and tightening device according to claim 1, characterized in that: The folding plate (502) and the gripper (504) are arranged in a circular array.