Automatic closing mechanism for bag production

Abstract

The application discloses a kind of automatic closing mechanism of packing bag production, it is related to packing bag production technical field, including fixed frame, the upper portion of the fixed frame is fixedly connected with fixed cylinder, the inner side of the fixed cylinder is rotatably connected with rotating unit, the left side upper portion of the fixed frame is fixedly connected with driving motor;The rotating unit includes rotating rod;The upper portion of the rotating frame is fixedly connected with telescopic cylinder on outer side, and the telescopic end of the telescopic cylinder is fixedly connected with connecting rod.The application is driven rotating rod and rotating frame by driving motor, and the automatic clamping and pulling of sealing cloth are completed by cooperating telescopic cylinder drive telescopic jaw, replace artificial whole process operation, make single packing bag closing time shorten;Through the constraint of rotating groove to rotating rod, the guiding cooperation of sliding block and sliding groove, form the accurate transmission system of rotary positioning and linear pulling, ensure that the clamping and pulling trajectory of telescopic jaw is stable, avoid the deviation of sealing cloth, uneven stretching caused by manual operation.

Description

Technical Field

[0001] This invention relates to the field of container bag production technology, and in particular to an automatic sealing mechanism for container bag production. Background Technology

[0002] FIBCs (Flexible Intermediate Bulk Containers) are flexible, large-scale packaging containers made primarily of polymer materials such as polypropylene. They are characterized by large capacity, high strength, wear resistance, and foldability for recycling. They are widely used in the transportation of bulk materials in industries such as chemicals, building materials, grain, and minerals. Their core function is to achieve efficient containerized handling of goods while protecting materials from external contamination. During the FIBC production process, the sealing process relies heavily on manual labor. Workers manually grasp the unsewn end of the sealing fabric, wrap it around the bag opening, adjust it to the preset position, and then the sealing device sequentially presses down to fix the sealing fabric, pulls it tight, sews it for reinforcement, and cuts off any excess. Throughout the entire process, manual labor is required to position, stretch, and align the sealing fabric, making it a labor-intensive and time-consuming critical step in the FIBC production process.

[0003] However, existing technologies suffer from several drawbacks: extremely low efficiency of manual operation; the time required for sealing a single FIBC (Flexible Intermediate Bulk Container) bag is long and affected by worker skill and fatigue, making it difficult to meet the needs of large-scale production; poor positioning accuracy, with manual pulling of the sealing fabric easily leading to misalignment or uneven stretching, resulting in misaligned stitching, affecting sealing performance and strength, and even causing rework; high labor intensity, as the FIBC sealing fabric is thick and heavy, repeated pulling can easily cause arm strain, and prolonged operation can further reduce quality stability due to lack of concentration; weak adaptability, as manual operation cannot accurately adapt to the sealing requirements of different FIBC sizes, requiring retraining and lengthy debugging when changing product specifications; and insufficient safety, with the risk of hand injuries due to accidental activation of equipment when operating near the sealing device. These problems severely restrict the efficiency, quality, and safety of FIBC production, necessitating the design of an automatic FIBC sealing mechanism to solve the aforementioned issues. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an automatic sealing mechanism for the production of bulk bags.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an automatic sealing mechanism for the production of bulk bags, including a fixed frame, a fixed cylinder fixedly connected to the upper part of the fixed frame, a rotating unit rotatably connected to the inner side of the fixed cylinder, and a drive motor fixedly connected to the upper left side of the fixed frame.

[0006] The rotating unit includes a rotating rod, and a rotating frame is fixedly connected to the upper left and right sides of the rotating rod;

[0007] The drive motor shaft is fixedly connected to the left end of the rotating rod;

[0008] Telescopic cylinders are fixedly connected to the outer side of the upper part of the rotating frame. Connecting rods are fixedly connected to the telescopic ends of the telescopic cylinders. Moving blocks are provided on the upper part of the inner side of the rotating frame. The connecting rods are fixedly connected to the outer side of the corresponding moving blocks. Telescopic grippers are fixedly connected to the inner end of the moving blocks.

[0009] Furthermore, a rotating groove is provided in the middle of the fixed cylinder, and the rotating rod is rotatably connected to the inner side of the rotating groove.

[0010] Furthermore, the upper inner side of the rotating frame is provided with a sliding groove, and the bottom of the outer side of the moving block is provided with a sliding block, and the sliding blocks are respectively slidably connected to the inner side of the corresponding sliding groove.

[0011] Furthermore, slots are provided on both the left and right ends of the front side of the fixed cylinder, and the bottom of the rotating frame is rotatably connected to the outside of the slots.

[0012] Furthermore, a number of support columns are equidistantly arranged on the upper part of the fixing frame, and the upper ends of the support columns are fixedly connected to the bottom of the fixing cylinder at equal intervals.

[0013] Furthermore, support rods are fixedly connected to the upper left and right sides of the fixing frame, and limit pads are fixedly connected to the upper part of each support rod.

[0014] Furthermore, the cross-section of the rotating frame is triangular.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The drive motor rotates the rotating rod and frame, which in turn drives the telescopic gripper to automatically clamp and pull the sealing cloth, replacing manual operation throughout the process. This solves the problems of low efficiency and high labor intensity associated with traditional manual methods, shortens the sealing time of a single container bag, and meets the needs of large-scale production. Through the constraint of the rotating rod by the rotating groove and the guiding cooperation between the sliding block and the sliding groove, a precise transmission system of rotational positioning and linear pulling is formed, ensuring the stability of the clamping and pulling trajectory of the telescopic gripper. This solves the problems of sealing cloth offset and uneven stretching caused by manual operation, controls the misalignment error of the sewing position, and improves the sealing performance and strength.

[0017] 2. By adjusting the gripping force of the telescopic grippers and rotating the frame at multiple angles within the slot, combined with the rigid support of the triangular cross-section rotating frame, adaptive gripping and pulling of sealing cloth for FIBCs of different sizes can be achieved. This solves the problems of traditional manual operation being unable to adapt to multiple product specifications and the long changeover and debugging time. Changeover and debugging time is shortened, and manual intervention near the sealing device is reduced. With the support rod and limiting pad, the FIBC is stably supported, avoiding the risk of scratches caused by accidental manual contact with the equipment. This solves the problem of insufficient safety in traditional manual operation and significantly improves the safety of the production process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front three-dimensional structure of an automatic sealing mechanism for container bag production.

[0019] Figure 2 This is a schematic diagram of the rear three-dimensional structure of an automatic sealing mechanism for container bag production.

[0020] Figure 3 This is an exploded three-dimensional structural diagram of a fixed frame, fixed cylinder, and rotating unit for an automatic sealing mechanism in the production of container bags.

[0021] Figure 4 This is a three-dimensional structural diagram of a telescopic cylinder, connecting rod, moving block, and telescopic gripper of an automatic sealing mechanism for producing container bags.

[0022] In the diagram: 1. Fixed frame; 101. Support column; 2. Fixed cylinder; 201. Rotating groove; 202. Slot; 3. Rotating unit; 301. Rotating rod; 302. Rotating frame; 303. Sliding groove; 4. Drive motor; 5. Telescopic cylinder; 6. Connecting rod; 7. Moving block; 701. Sliding block; 8. Telescopic gripper; 9. Support rod; 10. Limiting pad. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-4 The present invention provides a technical solution: an automatic sealing mechanism for the production of container bags, including a fixed frame 1, a fixed cylinder 2 fixedly connected to the upper part of the fixed frame 1, a rotating unit 3 rotatably connected to the inner side of the fixed cylinder 2, and a drive motor 4 fixedly connected to the upper left side of the fixed frame 1.

[0025] The rotating unit 3 includes a rotating rod 301, and a rotating frame 302 is fixedly connected to the upper left and right sides of the rotating rod 301;

[0026] The shaft of the drive motor 4 is fixedly connected to the left end of the rotating rod 301;

[0027] Telescopic cylinders 5 are fixedly connected to the outer side of the upper part of the rotating frame 302. The telescopic ends of the telescopic cylinders 5 are fixedly connected to connecting rods 6. Moving blocks 7 are set on the upper part of the inner side of the rotating frame 302. The connecting rods 6 are fixedly connected to the outer side of the corresponding moving blocks 7. Telescopic grippers 8 are fixedly connected to the inner end of the moving blocks 7. The connecting rods 6 driven by the telescopic cylinders 5 drive the moving blocks 7 and telescopic grippers 8 to move synchronously, replacing manual pulling of the sealing cloth and realizing automated adjustment. The telescopic grippers 8 can flexibly adapt to sealing cloths of different thicknesses, and the clamping force is controllable, avoiding wrinkles or slippage of the cloth surface caused by manual pulling, ensuring that the sealing cloth remains flat before sewing, and greatly improving the sealing accuracy and efficiency.

[0028] A rotating groove 201 is provided in the middle of the fixed cylinder 2. The rotating rod 301 is rotatably connected to the inner side of the rotating groove 201. The rotating groove 201 forms a circumferential constraint on the rotating rod 301, limiting its radial sway and avoiding rotational offset caused by unstable support of the rotating structure. This ensures that the trajectory of the rotating rod 301 driving the rotating frame 302 to rotate is stable, ensuring that the telescopic gripper 8 can accurately align with the sealing cloth position, providing a reliable positioning basis for subsequent clamping and pulling.

[0029] The upper inner side of the rotating frame 302 is provided with a sliding groove 303, and the bottom of the outer side of the moving block 7 is provided with a sliding block 701. The sliding blocks 701 are slidably connected to the inner side of the corresponding sliding groove 303. The sliding of the sliding blocks 701 and the sliding groove 303 provides directional guidance for the moving block 7, avoids lateral displacement during the pulling process, ensures that the sealing cloth moves along the preset trajectory, greatly reduces the alignment error of the sewing edge, and improves the sealing consistency.

[0030] The front left and right ends of the fixed cylinder 2 are provided with slots 202. The bottom of the rotating frame 302 is rotatably connected to the outside of the slots 202. The slots 202 provide sufficient space for the rotation of the rotating frame 302, avoiding mechanical interference with the fixed cylinder 2, preventing insufficient rotation angle due to space limitations, ensuring that the rotating frame 302 can be flexibly adjusted to the required angle, adapting to the sealing requirements of different sizes of container bags, and enhancing the versatility of the equipment.

[0031] Several support columns 101 are equidistantly arranged on the upper part of the fixed frame 1. The upper ends of the support columns 101 are fixedly connected to the bottom of the fixed cylinder 2 at equal intervals. The equidistantly distributed support columns 101 form a support system with uniform force, which distributes the weight of the fixed cylinder 2 to the fixed frame 1, avoids structural deformation caused by single-point support, enhances the overall structural rigidity, reduces vibration during equipment operation, provides stable operation for the rotating unit 3, and extends the service life of the equipment.

[0032] Support rods 9 are fixedly connected to the upper left and right sides of the fixed frame 1. Limiting pads 10 are fixedly connected to the upper part of the support rods 9. The support rods 9 and the limiting pads 10 cooperate to form an auxiliary support structure, which can support the main body of the container bag and prevent it from sagging or shaking due to its own weight during the closing process. This ensures that the relative position of the sealing cloth and the main body of the container bag is fixed, and further improves the sewing accuracy.

[0033] The rotating frame 302 has a triangular cross-section. The triangular cross-section has higher structural rigidity and torsional resistance due to its geometric properties. Compared with traditional rectangular or rod-shaped structures, it can effectively resist deformation during rotation and tension. This ensures stable transmission of the force between the telescopic cylinder 5 and the moving block 7, avoids clamping position deviation caused by the deformation of the rotating frame 302, and improves the reliability of the mechanism operation.

[0034] Working principle: First, check whether the support column 101 on the upper part of the fixed frame 1 firmly supports the fixed cylinder 2, ensuring that the rotating rod 301 of the rotating unit 3 rotates flexibly in the rotating groove 201 of the fixed cylinder 2, and that the bottom of the rotating frame 302 is not stuck in the slot 202 of the fixed cylinder 2. At the same time, confirm that the telescopic gripper 8 and the telescopic cylinder 5 have normal telescopic functions. Then, the drive motor 4 receives the start signal, and its shaft drives the rotating rod 301 of the rotating unit 3 to rotate in the rotating groove 201. The rotating rod 301 synchronously drives the rotating frame 302 on the upper left and right sides to rotate. At the same time, the bottom of the rotating frame 302 rotates along the outside of the slot 202 to avoid interference with the fixed cylinder 2. Finally, the telescopic gripper 8 on the upper part of the rotating frame 302 rotates precisely to the outside of the unstitched end of the container bag sealing cloth, completing the position alignment before gripping. Next, the telescopic gripper 8 automatically adjusts the gripping force according to the thickness of the sealing cloth. Its telescopic end extends and fits against both sides of the sealing cloth, and the unstitched end is firmly fixed through symmetrical gripping action. Then, the drive motor 4 again... The drive rotating rod 301 rotates, causing the rotating frame 302 holding the sealing cloth to rotate upwards, gradually lifting the unsewn end of the sealing cloth from a horizontal state until it is vertical and aligned with the entrance direction of the sewing device. At this time, the support rods 9 and limiting pads 10 on the upper left and right sides of the fixed frame 1 can assist in supporting the main body of the container bag, preventing the bag from shaking and affecting the positional accuracy of the sealing cloth. Further, the telescopic cylinder 5 is activated, and its telescopic end drives the moving block 7 to move outwards through the connecting rod 6. The sliding block 701 at the bottom of the moving block 7 slides smoothly along the sliding groove 303 of the rotating frame 302. The sliding block 701 can restrict the movement trajectory of the moving block 7, ensuring that it pulls the sealing cloth in a straight line and avoids lateral deviation. Finally, the sewing device is activated to sew the sealing cloth. After completion, the telescopic gripper 8 is released, the telescopic cylinder 5 resets, and the moving block 7 returns to its initial position. The drive motor 4 rotates in the opposite direction to reset the rotating frame 302 to the ready-to-grab state, waiting for the next container bag to enter, forming a continuous automated sealing cycle.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic sealing mechanism for producing container bags, comprising a fixing frame (1), characterized in that, The upper part of the fixed frame (1) is fixedly connected to a fixed cylinder (2), the inner side of the fixed cylinder (2) is rotatably connected to a rotating unit (3), and the upper left side of the fixed frame (1) is fixedly connected to a drive motor (4). The rotating unit (3) includes a rotating rod (301), and a rotating frame (302) is fixedly connected to the upper left and right sides of the rotating rod (301); The shaft of the drive motor (4) is fixedly connected to the left end of the rotating rod (301); Telescopic cylinders (5) are fixedly connected to the outer side of the upper part of the rotating frame (302). The telescopic ends of the telescopic cylinders (5) are fixedly connected to connecting rods (6). Moving blocks (7) are provided on the upper part of the inner side of the rotating frame (302). The connecting rods (6) are fixedly connected to the outer side of the corresponding moving blocks (7). Telescopic grippers (8) are fixedly connected to the inner end of the moving blocks (7).

2. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The fixed cylinder (2) is provided with a rotating groove (201) in the middle, and the rotating rod (301) is rotatably connected to the inner side of the rotating groove (201).

3. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The upper inner side of the rotating frame (302) is provided with a sliding groove (303), and the bottom of the outer side of the moving block (7) is provided with a sliding block (701). The sliding blocks (701) are slidably connected to the inner side of the corresponding sliding groove (303).

4. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The front left and right ends of the fixed cylinder (2) are provided with slots (202), and the bottom of the rotating frame (302) is rotatably connected to the outside of the slots (202).

5. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The upper part of the fixed frame (1) is provided with a number of support columns (101) at equal intervals, and the upper ends of the support columns (101) are fixedly connected to the bottom of the fixed cylinder (2) at equal intervals.

6. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The upper left and right sides of the fixed frame (1) are fixedly connected with support rods (9), and the upper part of the support rods (9) is fixedly connected with limit pads (10).

7. The automatic sealing mechanism for producing container bags according to claim 1, characterized in that: The cross-section of the rotating frame (302) is triangular.

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