Bag opening mechanism for a bag-on-peg automatic packaging machine

Abstract

The utility model relates to bagging technology field, concretely is the bag -feeding type automatic packaging machine bag -opening mechanism, including bottom plate and fixed plate, the top fixed mounting of rotating lever has connecting rod, is fixedly installed on connecting rod and has the lifting cylinder, the output of lifting cylinder fixed mounting first connecting plate, the utility model discloses the setting of rotary bag -opening structure has constructed the modularization bag -opening execution structure, and the multiple group setting of suction head promotes bag mouth adsorption stability, and the multistage drive of lifting cylinder, second electric cylinder, third electric cylinder realizes the accurate regulation and control of bag -opening action, solves the problem that traditional mechanism bag -opening precision is low, and bag mouth is easy to fall off, and lays the foundation for subsequent multi -station operation, and the advantage of this structure can realize the overall rotation function of bag -opening mechanism, breaks the traditional single -station serial operation limit, can carry out multi -station bag -opening, transfer operation simultaneously, improves the packaging amount of unit time greatly, breaks through the capacity bottleneck, satisfies the demand of high -capacity production line.

Description

Technical Field

[0001] This utility model relates to a bag opening mechanism for an automatic bag packaging machine, and particularly to a bag opening mechanism for an automatic bag packaging machine, belonging to the field of bag opening technology for packaging machines. Background Technology

[0002] Pre-packaging automatic packaging machines are widely used in pre-packaged bag processes in industries such as food, pharmaceuticals, chemicals, and daily necessities due to their high degree of automation and good packaging standardization. The bag opening mechanism is the core component of this equipment, responsible for gripping the pre-packaged bags, accurately opening the bag mouth, and positioning the workstation. It directly determines the continuity of the packaging process, the stability of packaging quality, and the overall efficiency of the production line.

[0003] Traditional bag-type automatic packaging machines cannot rotate as a whole and can only operate at a single station. The core drawback is the issue of production efficiency. Single-station operation requires a serial process of "opening bag - filling - sealing - resetting". If the previous process is not finished, the next process can only wait. There is no space for parallel operation. The packaging volume per unit time depends only on the fastest speed of a single process. The bottleneck of capacity improvement is obvious and it is difficult to meet the needs of high-capacity production lines.

[0004] Therefore, it is urgent to improve the bag opening mechanism of the automatic bag packaging machine to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a bag-opening mechanism for an automatic bag packaging machine. By setting a rotating bag-opening structure, a modular bag-opening execution structure is constructed. The multiple sets of suction heads improve the stability of bag mouth adsorption. The multi-stage drive of the lifting cylinder, the second electric cylinder, and the third electric cylinder achieves precise control of the bag-opening action, solving the problems of low bag-opening accuracy and easy bag mouth detachment in traditional mechanisms. This lays the foundation for subsequent multi-station operations. The advantage of this structure is that it can realize the overall rotation function of the bag-opening mechanism, break the limitation of traditional single-station serial operation, and can simultaneously perform multi-station bag opening and transfer operations, greatly increasing the packaging volume per unit time, breaking through the capacity bottleneck, and meeting the needs of high-capacity production lines.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] An automatic bag-opening mechanism for a bag packaging machine includes a base plate and a fixed plate. A first electric cylinder is mounted on the fixed plate. A rotating bag-opening structure is provided on the base plate. The rotating bag-opening structure includes a rotating rod movably mounted on the top of the base plate. A connecting rod is fixedly mounted on the top of the rotating rod. A lifting cylinder is fixedly mounted on the connecting rod. A first connecting plate is fixedly mounted on the output end of the lifting cylinder. A second connecting plate is fixedly mounted on the lifting cylinder. A second electric cylinder is fixedly mounted on the top of the second connecting plate. A fixed frame is fixedly mounted on the output end of the second electric cylinder. A third electric cylinder is fixedly mounted on the bottom of the fixed frame. Connecting blocks are provided at both ends of the third electric cylinder. A bracket is fixedly mounted on the inner side of the connecting block. Several suction heads are mounted on the bracket.

[0008] Preferably, a packaging bag gripper is installed at the output end of the first electric cylinder, a fourth electric cylinder is installed on both sides of the packaging bag gripper, a first gear is fixedly installed below the connecting rod, a drive motor is fixedly installed on the top of the base plate, and a second gear that meshes with the first gear is fixedly installed at the output end of the drive motor.

[0009] Preferably, a protective shell is fixedly installed on the outside of the drive motor, the protective shell has several heat dissipation holes, a maintenance cover is provided at one end of the protective shell, and a handle is fixedly installed on the top of the maintenance cover.

[0010] Preferably, a first magnetic ring is fixedly installed at the bottom of the inspection cover, and a second magnetic ring that is magnetically connected to the first magnetic ring is fixedly installed at the top of the protective shell.

[0011] Preferably, a plurality of fixed frames are fixedly installed at both ends of the base plate, a connecting frame is fixedly installed at the top of the fixed frame, an electric telescopic rod is fixedly installed at the bottom of the connecting frame, and a support plate is installed at the output end of the electric telescopic rod.

[0012] Preferably, a rubber pad is provided at the bottom of the support plate, a hook and loop fastener is fixedly installed on the inner side of the rubber pad, and a hook and loop fastener is fixedly installed on the support plate to be bonded to the hook and loop fastener.

[0013] Preferably, a fixing block is fixedly installed on the electric telescopic rod, and a fixing sleeve connected to the fixing block is fixedly installed on the top of the support plate. Both the fixing block and the fixing sleeve have threaded holes. A nut is fixedly installed on one side of the fixing sleeve, and a bolt connected to the nut is installed inside the threaded hole. Several protrusions are fixedly installed on one end of the bolt.

[0014] This utility model has at least the following beneficial effects:

[0015] By designing a rotating bag-opening structure, a modular bag-opening execution structure is constructed. The multiple sets of suction heads improve the stability of bag mouth adsorption. The multi-stage drive of the lifting cylinder, the second electric cylinder, and the third electric cylinder enables precise control of the bag-opening action, solving the problems of low bag-opening accuracy and easy bag mouth detachment in traditional mechanisms. This lays the foundation for subsequent multi-station operations. The advantage of this structure is that it enables the overall rotation function of the bag-opening mechanism, breaking the limitations of traditional single-station serial operation. It can simultaneously perform multi-station bag opening and transfer operations, significantly increasing the packaging volume per unit time, breaking through the capacity bottleneck, and meeting the needs of high-capacity production lines. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the second gear structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the fixing sleeve structure of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Base plate; 2. Fixing plate; 3. First electric cylinder; 4. Rotary bag opening structure; 5. Rotating rod; 6. Connecting rod; 7. Lifting cylinder; 8. First connecting plate; 9. Second connecting plate; 10. Second electric cylinder; 11. Fixing frame; 12. Third electric cylinder; 13. Connecting block; 14. Support; 15. Suction head; 16. Packaging bag gripper; 17. Fourth electric cylinder; 18. First gear; 19. Drive motor 20. Second gear; 21. Protective shell; 22. Heat dissipation hole; 23. Inspection cover plate; 24. Handle; 25. First magnetic ring; 26. Second magnetic ring; 27. Fixing frame; 28. Connecting bracket; 29. ​​Electric telescopic rod; 30. Support plate; 31. Rubber pad; 32. Hook and loop fastener; 33. Hook and loop fastener; 34. Fixing block; 35. Fixing sleeve; 36. Threaded hole; 37. Nut; 38. Bolt; 39. Protrusion. Detailed Implementation

[0023] 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.

[0024] like Figures 1-5 As shown in this embodiment, the bag opening mechanism of the automatic bag packaging machine is provided.

[0025] The bag opening mechanism of the automatic bag packaging machine includes a base plate 1 and a fixed plate 2. A first electric cylinder 3 is installed on the fixed plate 2. A rotating bag opening structure 4 is provided on the base plate 1. The rotating bag opening structure 4 includes a rotating rod 5 movably installed on the top of the base plate 1. A connecting rod 6 is fixedly installed on the top of the rotating rod 5. A lifting cylinder 7 is fixedly installed on the connecting rod 6. A first connecting plate 8 is fixedly installed on the output end of the lifting cylinder 7. A second connecting plate 9 is fixedly installed on the lifting cylinder 7. A second electric cylinder 10 is fixedly installed on the top of the second connecting plate 9. A fixed frame 1 is fixedly installed on the output end of the second electric cylinder 10. 1. A third electric cylinder 12 is fixedly installed at the bottom of the fixed frame 11. Both ends of the third electric cylinder 12 are provided with connecting blocks 13. A bracket 14 is fixedly installed on the inner side of the connecting block 13. Several suction heads 15 are installed on the bracket 14. A packaging bag gripper 16 is installed at the output end of the first electric cylinder 3. A fourth electric cylinder 17 is installed on both sides of the packaging bag gripper 16. A first gear 18 is fixedly installed below the connecting rod 6. A drive motor 19 is fixedly installed at the top of the base plate 1. A second gear 20 that meshes with the first gear 18 is fixedly installed at the output end of the drive motor 19.

[0026] By setting the rotating bag-opening structure 4, a modular bag-opening execution structure is constructed. The multiple sets of suction heads 15 improve the bag mouth adsorption stability. The multi-stage drive of the lifting cylinder 7, the second electric cylinder 10, and the third electric cylinder 12 achieves precise control of the bag-opening action, solving the problems of low bag-opening accuracy and easy bag mouth detachment in traditional mechanisms, laying the foundation for subsequent multi-station operations. After the first electric cylinder 3 is started, it provides the power foundation for the overall mechanism. The rotating bag-opening structure 4, as the core execution component, is flexibly rotated by rotating rod 5 on the top of the base plate 1. The lifting cylinder 7 drives the first connecting plate 8 to adjust its height, and the second electric cylinder 10 drives the fixed frame 11 to move laterally, thereby driving the third electric cylinder 12 to operate. The third electric cylinder 12 drives the bracket 14 to move synchronously through the connecting block 13, so that... Several suction heads 15 on the bracket 14 adhere to the opening of the packaging bag, and the bag opening is opened by suction. After the drive motor 19 starts, it drives the second gear 20 to rotate. The second gear 20 meshes with the first gear 18 below the connecting rod 6, driving the rotary bag opening structure 4 to rotate as a whole. At the same time, the first electric cylinder 3 drives the packaging bag gripper 16 to move to the packaging bag position, and the fourth electric cylinder 17 adjusts the opening degree of the packaging bag gripper 16 to clamp the packaging bag. With the rotation of the rotary bag opening structure 4, the bag transfer and opening connection between different workstations are realized. The advantage of this structure is that it can realize the overall rotation function of the bag opening mechanism, break the limitation of traditional single-station serial operation, and can perform multi-station bag opening and transfer operations simultaneously, greatly increasing the packaging volume per unit time, breaking through the capacity bottleneck, and meeting the needs of high-capacity production lines.

[0027] like Figures 1-5 As shown, a protective shell 21 is fixedly installed on the outside of the drive motor 19. Several heat dissipation holes 22 are provided on the protective shell 21. A maintenance cover 23 is provided at one end of the protective shell 21. A handle 24 is fixedly installed on the top of the maintenance cover 23. A first magnetic ring 25 is fixedly installed on the bottom of the maintenance cover 23. A second magnetic ring 26 that is magnetically connected to the first magnetic ring 25 is fixedly installed on the top of the protective shell 21.

[0028] With the protective shell 21, heat dissipation holes 22, inspection cover 23, and handle 24, the protective shell 21 wraps around the drive motor 19 to form a protective barrier. The heat generated by the drive motor 19 during operation is dissipated through the heat dissipation holes 22 on the protective shell 21. When maintenance of the drive motor 19 is required, the inspection cover 23 is pulled by holding the handle 24 to separate the inspection cover 23 from the protective shell 21, exposing the drive motor 19 for maintenance. The protective shell 21 provides physical protection for the core drive component, the drive motor 19, preventing dust and debris from entering. The heat dissipation holes 22 ensure heat dissipation efficiency and extend the service life of the drive motor 19. The inspection cover 23 and handle 24 simplify the maintenance process, improve the convenience of equipment maintenance, and reduce downtime maintenance costs.

[0029] With the first magnetic ring 25 and the second magnetic ring 26, when the inspection cover 23 is closed, the first magnetic ring 25 at the bottom of the inspection cover 23 and the second magnetic ring 26 at the top of the protective shell 21 approach each other and generate a magnetic attraction force, realizing the quick positioning and fixation of the inspection cover 23 and the protective shell 21; when opening, applying external force can separate the first magnetic ring 25 and the second magnetic ring 26, opening the inspection cover 23. The magnetic connection replaces the traditional mechanical locking, realizing the quick opening and closing of the inspection cover 23 and improving maintenance efficiency; the magnetic connection is stable and wear-free, avoiding the problem of loosening after long-term use of the traditional locking structure, and ensuring the sealing and stability of the protective structure.

[0030] like Figures 1-5 As shown, several fixed frames 27 are fixedly installed at both ends of the base plate 1. A connecting frame 28 is fixedly installed at the top of the fixed frame 27. An electric telescopic rod 29 is fixedly installed at the bottom of the connecting frame 28. A support plate 30 is installed at the output end of the electric telescopic rod 29. A rubber pad 31 is provided at the bottom of the support plate 30. A hook and loop fastener 32 is fixedly installed on the inner side of the rubber pad 31. A hook and loop fastener rough surface 33 that is bonded to the hook and loop fastener 32 is fixedly installed on the support plate 30.

[0031] With the fixed frame 27, connecting frame 28, electric telescopic rod 29, and support plate 30, the fixed frame 27 and connecting frame 28 form a support frame, which is fixed to both ends of the base plate 1. After receiving a signal, the electric telescopic rod 29 drives the support plate 30 to adjust its height. The support position of the support plate 30 is adjusted according to the height of the packaging bag, forming a stable support for the bottom of the packaging bag after it is opened. This provides an adjustable bottom support structure, solving the problems of easy tipping and positioning deviation of packaging bags in traditional mechanisms, and improving the stability of the packaging process. The telescopic adjustment of the electric telescopic rod 29 is adapted to packaging bags of different heights, enhancing the versatility of the mechanism.

[0032] With the arrangement of rubber pad 31, hook and loop fastener 32, and hook and loop fastener 33, rubber pad 31 is bonded to the hook and loop fastener 33 on the support plate 30 through the hook and loop fastener 32 on its inner side, thus fixing rubber pad 31 to the bottom of support plate 30. After the bag is opened, the bottom of the packaging bag comes into contact with rubber pad 31, and rubber pad 31 provides cushioning and anti-slip function to prevent the packaging bag from sliding. The hook and loop fastener method allows for quick disassembly and replacement of rubber pad 31, adapting to the protection needs of packaging bags of different materials. The anti-slip cushioning function of rubber pad 31 protects the bottom of the packaging bag from damage, while improving the positioning accuracy of the packaging bag and ensuring packaging quality.

[0033] like Figures 1-5As shown, a fixing block 34 is fixedly installed on the electric telescopic rod 29, and a fixing sleeve 35 connected to the fixing block 34 is fixedly installed on the top of the support plate 30. Both the fixing block 34 and the fixing sleeve 35 are provided with threaded holes 36. A nut 37 is fixedly installed on one side of the fixing sleeve 35. A bolt 38 connected to the nut 37 is installed inside the threaded hole 36. Several protrusions 39 are fixedly installed on one end of the bolt 38.

[0034] With the arrangement of fixing block 34, fixing sleeve 35, threaded hole 36, nut 37, bolt 38, and protrusion 39, the support plate 30 is connected to the fixing block 34 on the electric telescopic rod 29 via the fixing sleeve 35. The bolt 38 is passed through the threaded hole 36 on the fixing block 34 and the fixing sleeve 35, and the nut 37 is tightened to lock the fixing block 34 and the fixing sleeve 35. Several protrusions 39 at one end of the bolt 38 enhance the anti-loosening effect of the bolt 38 connection, preventing loosening caused by long-term vibration. The threaded connection combined with the anti-loosening protrusion 39 design improves the connection firmness between the electric telescopic rod 29 and the support plate 30, preventing structural loosening during high-frequency operation. The installation position of the support plate 30 can be finely adjusted through the cooperation of the threaded hole 36 and the bolt 38, improving the adjustment accuracy of the mechanism and extending the service life of the equipment.

[0035] In this embodiment, as Figures 1-5 As shown, the working process of the bag-opening mechanism of the automatic bag packaging machine provided in this embodiment is as follows:

[0036] After the first electric cylinder 3 starts, it provides the power foundation for the overall mechanism. The rotating bag opening structure 4, as the core execution component, is flexibly rotated by rotating rod 5 mounted on the top of the base plate 1. The lifting cylinder 7 drives the first connecting plate 8 to adjust its height. The second electric cylinder 10 drives the fixed frame 11 to move laterally, which in turn drives the third electric cylinder 12 to operate. The third electric cylinder 12 drives the bracket 14 to move synchronously through the connecting block 13, so that several suction heads 15 on the bracket 14 fit against the opening of the packaging bag. The bag opening is opened by suction. After the drive motor 19 starts, it drives the second gear 20 to rotate. The second gear 20 meshes with the first gear 18 below the connecting rod 6, driving the rotating bag opening structure 4 to rotate as a whole. At the same time, the first electric cylinder 3 drives the packaging bag gripper 16 to move to the packaging bag position. The fourth electric cylinder 17 adjusts the opening degree of the packaging bag gripper 16 to clamp the packaging bag. The rotation of the rotating bag opening structure 4 is combined to realize the transfer and opening of packaging bags between different workstations.

[0037] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A bag-opening mechanism for an automatic bag packaging machine, comprising a base plate (1) and a fixing plate (2), wherein a first electric cylinder (3) is mounted on the fixing plate (2), characterized in that: The base plate (1) is provided with a rotating bag opening structure (4). The rotating bag opening structure (4) includes a rotating rod (5) movably installed on the top of the base plate (1). A connecting rod (6) is fixedly installed on the top of the rotating rod (5). A lifting cylinder (7) is fixedly installed on the connecting rod (6). A first connecting plate (8) is fixedly installed on the output end of the lifting cylinder (7). A second connecting plate (9) is fixedly installed on the lifting cylinder (7). A second electric cylinder (10) is fixedly installed on the top of the second connecting plate (9). A fixing frame (11) is fixedly installed on the output end of the second electric cylinder (10). A third electric cylinder (12) is fixedly installed on the bottom of the fixing frame (11). A connecting block (13) is provided at both ends of the third electric cylinder (12). A bracket (14) is fixedly installed on the inner side of the connecting block (13). Several suction heads (15) are installed on the bracket (14).

2. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 1, characterized in that: The first electric cylinder (3) is equipped with a packaging bag gripper (16) at its output end. A fourth electric cylinder (17) is installed on both sides of the packaging bag gripper (16). A first gear (18) is fixedly installed below the connecting rod (6). A drive motor (19) is fixedly installed on the top of the base plate (1). A second gear (20) that meshes with the first gear (18) is fixedly installed at the output end of the drive motor (19).

3. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 2, characterized in that: A protective shell (21) is fixedly installed on the outside of the drive motor (19). Several heat dissipation holes (22) are provided on the protective shell (21). A maintenance cover (23) is provided at one end of the protective shell (21). A handle (24) is fixedly installed on the top of the maintenance cover (23).

4. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 3, characterized in that: The bottom of the inspection cover (23) is fixedly installed with a first magnetic ring (25), and the top of the protective shell (21) is fixedly installed with a second magnetic ring (26) that is magnetically connected to the first magnetic ring (25).

5. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 1, characterized in that: Several fixed frames (27) are fixedly installed at both ends of the base plate (1). A connecting frame (28) is fixedly installed on the top of the fixed frame (27). An electric telescopic rod (29) is fixedly installed at the bottom of the connecting frame (28). A support plate (30) is installed at the output end of the electric telescopic rod (29).

6. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 5, characterized in that: A rubber pad (31) is provided at the bottom of the support plate (30), and a hook and loop fastener (32) is fixedly installed on the inner side of the rubber pad (31). A hook and loop fastener (33) that is bonded to the hook and loop fastener (32) is fixedly installed on the support plate (30).

7. The bag-opening mechanism of the automatic bag-type packaging machine according to claim 6, characterized in that: A fixing block (34) is fixedly installed on the electric telescopic rod (29). A fixing sleeve (35) connected to the fixing block (34) is fixedly installed on the top of the support plate (30). Threaded holes (36) are opened on both the fixing block (34) and the fixing sleeve (35). A nut (37) is fixedly installed on one side of the fixing sleeve (35). A bolt (38) connected to the nut (37) is installed inside the threaded hole (36). Several protrusions (39) are fixedly installed on one end of the bolt (38).

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