A blow-bag mechanism for rapid filling of packaging bags

Abstract

This utility model discloses a blow-bag mechanism for facilitating rapid filling of packaging bags. It includes a rotating disk that rotates horizontally and has multiple clamping components distributed circumferentially around its bottom outer end for holding the packaging bags; a fixed disk positioned above the rotating disk and equipped with pushing components for moving the clamping components to clamp and release the packaging bags; and a vacuum adsorption mechanism positioned at the outer end of the rotating disk and corresponding to any one of the clamping components to open the clamped packaging bag. When the clamping components move to the vacuum adsorption mechanism with the rotation of the rotating disk, the clamping components press against the opening of the clamped packaging bag. An exhaust pipe is provided on the vacuum adsorption mechanism, with its outlet positioned directly above and pointing towards the packaging bag opening. The exhaust pipe either vents or closes when the vacuum adsorption mechanism moves. This blow-bag mechanism can be used to blow air into clamped and open packaging bags to maximize the opening for convenient filling.

Description

Technical Field

[0001] This utility model relates to the field of material packaging technology, specifically a blow-bag mechanism that facilitates rapid filling of packaging bags. Background Technology

[0002] In the workflow of a bag packaging machine, the effective opening and maintenance of the bag opening is a crucial prerequisite for ensuring accurate filling of subsequent materials, directly affecting the overall operating efficiency and packaging quality of the packaging production line. Currently, the mainstream bag opening method in the industry generally relies on the synergistic effect of "clamping components + vacuum suction cups," and its specific working principle is as follows: First, the stacked packaging bags are conveyed one by one to the bag opening station by the conveying mechanism; then, the clamping components set on both sides of the station are activated to clamp and fix the two sides of the bag opening to ensure that the packaging bag will not shift during the subsequent opening process; next, the vacuum suction cup mechanism, which operates outside the clamping components or synchronously with the clamping components, is activated, so that the two vacuum suction cups are in close contact with the outer surfaces of the two sides of the bag opening, and a vacuum pump is used to create a negative pressure, so that the vacuum suction cups are firmly attached to the outer surface of the bag opening; finally, the drive mechanism drives the two vacuum suction cups to move in a direction away from each other, and the suction force of the vacuum suction cups pulls the bag opening from the initial closed state until the bag opening is opened to the preset filling size, thus completing the bag opening process.

[0003] However, the aforementioned traditional bag opening technology has a technical flaw in practical application: the rebound problem after the bag opening is opened. Specifically, after the vacuum suction cup pulls the bag opening open to the preset size, in order to avoid interference between the vacuum suction cup and the filling nozzle entering the filling station, it is necessary to control the vacuum suction cup to stop vacuuming and detach from the outer surface of the bag opening. However, since the packaging bags are mostly made of plastic films with a certain degree of elastic deformation, such as polyethylene (PE) and polypropylene (PP), the film material at the bag opening will undergo elastic deformation due to the tension during the process of the vacuum suction cup pulling the bag opening open. When the vacuum suction cup detaches and the tension suddenly disappears, the film material at the bag opening will rebound and shrink under the action of its own elastic restoring force, causing the bag opening that was originally opened to the preset size to shrink significantly, making it impossible to maintain the maximum opening required for filling. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, this utility model provides a blow-bag mechanism that facilitates rapid filling of packaging bags. The blow-bag mechanism can introduce positive pressure air into the bag opening at the opening of the vacuum adsorption mechanism, so that the bag opening is always in an open state. When the vacuum adsorption mechanism is separated from the bag opening, the bag opening will not shrink due to rebound, so that the bag opening is always at the maximum opening degree, which facilitates subsequent material filling.

[0005] This utility model is implemented as follows: a blow-bag mechanism that facilitates rapid filling of packaging bags includes a rotating disk that maintains horizontal rotation and has multiple clamping components distributed around the bottom outer circumference for clamping the packaging bags. A fixed plate is positioned above the rotating plate and has a pushing component on it for moving the clamping assembly to clamp and release the packaging bag; A vacuum adsorption mechanism is located at the outer end of the rotating disk and corresponds to any clamping component to open the clamped packaging bag. When the clamping component moves to the vacuum adsorption mechanism with the rotation of the rotating disk, the clamping component moves to squeeze the opening of the clamped packaging bag. An exhaust pipe is provided on the vacuum adsorption mechanism. The outlet of the exhaust pipe is located directly above the opening of the packaging bag and points towards the packaging bag. When the vacuum adsorption mechanism moves, the exhaust pipe either exhausts air or closes.

[0006] Preferably, it also includes a base and a support cylinder, the rotating disk and the fixed disk are disposed above the support cylinder, a driving device is disposed at the outer end of the base, and a transmission mechanism for connecting the driving device and the rotating disk and realizing power transmission is disposed inside the support cylinder.

[0007] Preferably, each of the clamping components specifically includes, A support plate is fixed to the bottom of the rotating disk; The first slide rail is symmetrically arranged on both sides of the support plate and fixed to the bottom of the rotating disk; The clamping arm has one end slidably mounted on the first slide rail via the first slide block, and the other end extends to the outside of the rotating disk and is provided with a clamping claw. The first tension spring is connected between the clamping arms at both ends of the support plate; Rollers are positioned on the opposing surfaces of the two clamping arms and rotate in the up-down direction; The first push plate is set on the bottom of the support plate and moves up and down through the first telescopic device; The second slide rail is located on the side of the support plate; The second slide block, in conjunction with the second slide rail, slides and is fixed to the side of the first push plate to realize the up and down movement of the first push plate.

[0008] Preferably, the top side of the first push plate is inclined and keeps in contact with the roller. When the first push plate moves upward, it pushes the two clamping arms to move outward through the contact between the inclined surface and the roller. When the first push plate moves downward, the two clamping arms move inward through the tension of the first tension spring.

[0009] Preferably, the gripper includes a fixed gripper and a movable gripper. The fixed gripper is fixed to the inner side of the end of the gripping arm. One end of the movable gripper corresponds to the fixed gripper. The middle part of the movable gripper is rotatably mounted on the end of the gripping arm. A pull rod is provided at the other end of the movable gripper. A rotating arm is also provided at the other end of the pull rod. The middle part of the rotating arm is hinged to the gripping arm. One end of the rotating arm is hinged to the pull rod. A push rod is provided above the other end of the rotating arm. The push rod is in contact with the pushing assembly. A second tension spring connected to the fixed gripper is also provided below the connection end of the rotating arm and the pull rod.

[0010] Preferably, the pushing assembly includes a second telescopic device and a second push plate. The second telescopic device is fixed above the fixed disk and keeps its telescopic end facing outward from the fixed disk. One end of the second push plate is fixed to the telescopic end of the second telescopic device, and the other end of the second push plate is bent downward and contacts the push rod.

[0011] Preferably, the vacuum adsorption mechanism specifically includes, The housing is fixed to the support rod; Two sliding rods are distributed vertically throughout the box and slide in a straight line. A pivot is located between two sliding rods and is rotatably mounted on the housing; The transmission plate is fixed in the middle to the outer end of the rotating shaft, and has strip holes at both ends; Two transmission rods are fixed to the sides of two sliding rods and locked into the slots in the transmission plate; Two vacuum suction cups are respectively positioned on the same side below the two sliding rods and are kept facing each other.

[0012] Preferably, the exhaust pipe passes through the housing and is fixed in place. A valve is also provided on the exhaust pipe. The valve is opened and closed by rotation. A gear is provided on the valve. A rack that meshes with the gear is provided on any one of the sliding rods.

[0013] Compared with the prior art, the present invention has the following advantages: In traditional solutions, the bag opening shrinks due to the elastic recovery force of the material after the vacuum suction cup detaches. This solution, however, addresses this by introducing positive pressure air into the bag opening through a blower mechanism after the vacuum suction mechanism opens it. This positive pressure air creates stable air pressure support inside the bag opening, counteracting the elastic contraction force of the bag material. Even after the vacuum suction mechanism detaches from the bag opening, the opening remains open under the continuous action of positive pressure air, and the opening size is consistently maintained at the maximum opening degree after the vacuum suction cup is pulled open. This completely avoids the problem of opening shrinkage caused by bag opening rebound, providing stable and ample operating space for subsequent filling processes.

[0014] Meanwhile, the exhaust pipe in the blow-drying mechanism opens and closes with the movement of the vacuum adsorption mechanism. When the vacuum adsorption mechanism moves to contact the bag opening for opening, the exhaust pipe closes to prevent exhaust from affecting the opening process. When the bag opening is opened, the exhaust pipe opens simultaneously, thereby filling the opened bag with high-pressure gas. This prevents the bag opening from rebounding after the vacuum suction cup separates from the bag opening, allowing the bag opening to open to the maximum extent for convenient subsequent filling. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model without the vacuum adsorption mechanism; Figure 3 for Figure 2 The diagram shows only one structural schematic of the clamping component and the pushing component; Figure 4 This is a detailed structural diagram of the clamping assembly of this utility model; Figure 5 for Figure 4 A structural diagram from another perspective; Figure 6 This is a schematic diagram of the vacuum adsorption mechanism and exhaust pipe of this utility model; Figure 7 A schematic diagram showing the internal structure of a vacuum adsorption mechanism with the casing removed. Figure 8 for Figure 7 A magnified view of a portion of point A in the middle; In the diagram: 1. Base; 2. Support cylinder; 3. Fixed plate; 4. Rotating plate; 5. Clamping assembly; 501. Support plate; 502. First slide rail; 503. Clamping arm; 504. First slide block; 505. Roller; 506. First tension spring; 507. Rotating arm; 508. Push rod; 509. Pull rod; 510. Fixed gripper; 511. Movable gripper; 512. Second tension spring; 513. First push plate; 514. First telescopic device; 515. Second slide rail; 516. Second slide block; 6. Second telescopic device; 7. Second push plate; 8. Vacuum suction mechanism; 801. Box; 802. Support rod; 803. Rotating shaft; 804. Transmission plate; 805. Sliding rod; 806. Transmission rod; 807. Vacuum suction cup; 9. Exhaust pipe; 10. Valve; 11. Gear; 12. Rack. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0017] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] As described in the background section, when the automatic bag packaging machine clamps the packaging bag and opens the bag opening through the vacuum suction cup, the bag opening will become smaller under the action of the rebound force after the vacuum suction cup separates from the bag opening, thus affecting the subsequent filling.

[0019] For the reasons stated above, please refer to the appendix for solutions to these problems. Figure 1 ~Appendix Figure 3 This utility model provides a bag blowing mechanism that facilitates rapid filling of packaging bags, including a rotating disk 4, which maintains horizontal rotation and has multiple clamping components 5 arranged circumferentially on the bottom outer end for clamping the packaging bags; A fixed plate 3 is positioned above the rotating plate 4 and is equipped with a pushing component for moving the clamping assembly 5 to clamp and release the packaging bag; The vacuum adsorption mechanism 8 is located at the outer end of the rotating disk 4 and corresponds to any clamping component 5 to open the clamped packaging bag. When the clamping component 5 moves to the vacuum adsorption mechanism 8 with the rotation of the rotating disk 4, the clamping component 5 moves to squeeze the opening of the clamped packaging bag. An exhaust pipe 9 is provided on the vacuum adsorption mechanism 8. The outlet of the exhaust pipe 9 is located directly above the opening of the packaging bag and points towards the packaging bag. When the vacuum adsorption mechanism 8 moves, the exhaust pipe 9 exhausts or closes.

[0020] In this embodiment, in order to achieve horizontal support for the fixed disk and the rotating disk and to achieve horizontal rotation of the rotating disk, a base 1 and a support cylinder 2 are also included. The rotating disk 4 and the fixed disk 3 are disposed above the support cylinder 2. A driving device is also provided at the outer end of the base 1. A transmission mechanism for connecting the driving device and the rotating disk 4 and realizing power transmission is provided inside the support cylinder 2.

[0021] In this embodiment, the driving device is a drive motor, and the transmission mechanism is a belt drive mechanism or a chain drive mechanism and a Geneva mechanism. The number of slots in the Geneva mechanism corresponds to the number of clamping components.

[0022] In this embodiment, to facilitate opening the bag opening, please refer to the attached document. Figure 4 and attached Figure 5 Each of the clamping components 5 specifically includes, Support plate 501 is fixed to the bottom of rotating disk 4; The first slide rail 502 is symmetrically arranged on both sides of the support plate 501 and fixed to the bottom of the rotating disk 4; The clamping arm 503 has one end slidably mounted on the first slide rail 502 via the first slide block 504, and the other end extends to the outside of the rotating disk 4 and is provided with a clamping claw. The first tension spring 506 is connected between the clamping arms 503 at both ends of the support plate 501; Roller 505 is disposed on the opposite surface of the two clamping arms 503 and rotates in the up and down direction; The first push plate 513 is disposed on the bottom of the support plate 501 and moves up and down through the first telescopic device 514; The second slide rail 515 is provided on the side of the support plate 501; The second slide block 516 cooperates with the second slide rail 515 to slide and is fixed to the side of the first push plate 513 to realize the up and down movement of the first push plate 513.

[0023] Furthermore, to ensure that the bag opening of the clamped packaging bag is opened, thus facilitating the opening and also enabling the clamping of packaging bags of different sizes, the top side of the first push plate 513 is inclined and keeps in contact with the roller 505. When the first push plate 513 moves upward, it pushes the two clamping arms 503 outward through the contact between the inclined surface and the roller 505. When the first push plate 513 moves downward, the two clamping arms 503 move inward through the pulling force of the first tension spring 506.

[0024] In this embodiment, to achieve the clamping and releasing of the bag opening of the packaging bag, thereby realizing the gripping of the packaging bag, the gripper includes a fixed gripper 510 and a movable gripper 511. The fixed gripper 510 is fixed to the inner side of the end of the gripping arm 503. One end of the movable gripper 511 corresponds to the fixed gripper 510, and the middle part of the movable gripper 511 is rotatably mounted on the end of the gripping arm 503. The other end of the movable gripper 511 is provided with a pull rod 509. The other end of the pull rod 509 is also provided with a rotating arm 507. The middle part of the rotating arm 507 is hinged to the gripping arm 503. One end of the rotating arm 507 is hinged to the pull rod 509. A push rod 508 is provided above the other end of the rotating arm 507. The push rod 508 is in contact with the pushing component. A second tension spring 512 connected to the fixed gripper 510 is also provided below the connection end of the rotating arm 507 and the pull rod 509.

[0025] Furthermore, in order to achieve the clamping and releasing of the bag opening of the packaging bag, the pushing component includes a second telescopic device 6 and a second push plate 7. The second telescopic device 6 is fixed above the fixed plate 3 and keeps the telescopic end facing the outside of the fixed plate 3. One end of the second push plate 7 is fixed on the telescopic end of the second telescopic device 6, and the other end of the second push plate 7 is bent downward and contacts the push rod 508.

[0026] In this embodiment, please refer carefully to the appendix. Figure 6 and attached Figure 7 To enable the opening of the clamped packaging bag, the vacuum adsorption mechanism 8 specifically includes: Box 801 is fixed to support rod 802; Two sliding rods 805 are distributed vertically and pass through the housing 801, maintaining a straight sliding motion. A rotating shaft 803 is located between two sliding rods 805 and is rotatably mounted on the housing 801. The transmission plate 804 is fixed in the middle to the outer end of the rotating shaft 803, and has strip holes at both ends; Two transmission rods 806 are fixed to the sides of two sliding rods 805 and are engaged in the slots of the transmission plate 804; Two vacuum suction cups 807 are respectively located on the same side below the two sliding rods 805 and are positioned opposite each other.

[0027] In this embodiment, please refer to the appendix. Figure 8 In order to realize that the exhaust pipe opens and closes synchronously with the movement of the vacuum adsorption mechanism, the exhaust pipe 9 passes through the housing 801 and is fixed. A valve 10 is also provided on the exhaust pipe 9. The valve 10 is opened and closed by rotation. A gear 11 is provided on the valve 10. A rack 12 that meshes with the gear 11 is provided on any of the sliding rods 805.

[0028] Before use, the packaging bag must first be clamped. The clamping process is as follows: The second telescopic device 6 extends, driving the second push plate 7 to push the push rod 508, which in turn drives the rotating arm 507 to rotate around the center point. During the rotation, the other end of the rotating arm 507 pulls the pull rod 509 to move. At the same time, the second tension spring 512 undergoes elastic deformation, and the other end of the pull rod 509 pulls the movable gripper 511 to rotate around the hinge point. The rotation of the movable gripper 511 opens the gap between the two grippers, making it easier to put in the packaging bag. After the packaging bag is placed, the second telescopic device 6 retracts. Under the elastic action of the second tension spring 512, the rotating arm 507 rotates, which causes the movable gripper 511 to rotate in the opposite direction to approach the fixed gripper 510, thereby clamping the two sides of the bag opening.

[0029] Then, the clamped packaging bag is opened. The opening process is as follows: The drive device drives the rotating disk 4 to rotate once, rotating the clamping component 5 of the station where the clamped packaging bag is located to the position of the vacuum adsorption mechanism 8. At this time, the first telescopic device 514 retracts, driving the first push plate 513 to descend. At this time, the rollers 505 on the inner side of the clamping arms 503 on both sides lose the force of the inclined surface of the first push plate 513. Under the elastic action of the first tension spring 506, the clamping arms 503 on both sides are driven to move closer along the first slide rail 502, thereby squeezing the opening of the clamped packaging bag to facilitate subsequent bag opening.

[0030] The rotating shaft 803 at the inner end of the vacuum adsorption mechanism 8 rotates, driving the two sliding rods 805 to move in opposite directions via the transmission plate 804 and transmission rod 806. This causes the two vacuum suction cups 807 to approach and adhere to the opening of the packaging bag, generating negative pressure and sticking tightly to the opening. During the movement of the sliding rods 805, the movement of the rack 12 causes the gear 11 to rotate. The rotation of the gear 11 drives the valve 10 to rotate synchronously, thus closing the exhaust pipe 9. Subsequently, the rotating shaft 803 rotates in the opposite direction, causing the vacuum suction cups 807 to move away and open the bag opening, thus opening the packaging bag. At the same time, the rack 12 moves in the opposite direction, causing the gear 11 and valve 10 to rotate in opposite directions, thus opening the exhaust pipe 9 and introducing positive pressure air into the already opened packaging bag. Finally, the vacuum suction cups 807 detach from the opening of the packaging bag. Because positive pressure air is introduced into the packaging bag, it can prevent the bag opening from rebounding and causing the opening to become smaller, thus facilitating the rotating disk 4 to rotate the opened packaging bag to the next station for filling.

[0031] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A bag blowing mechanism for facilitating quick filling of a bag, characterized in that: include, The rotating disk rotates horizontally and has multiple clamping components distributed around its bottom outer circumference for clamping packaging bags. A fixed plate is positioned above the rotating plate and has a pushing component on it for moving the clamping assembly to clamp and release the packaging bag; A vacuum adsorption mechanism is located at the outer end of the rotating disk and corresponds to any clamping component to open the clamped packaging bag. When the clamping component moves to the vacuum adsorption mechanism with the rotation of the rotating disk, the clamping component moves to squeeze the opening of the clamped packaging bag. An exhaust pipe is provided on the vacuum adsorption mechanism. The outlet of the exhaust pipe is located directly above the opening of the packaging bag and points towards the packaging bag. When the vacuum adsorption mechanism moves, the exhaust pipe either exhausts air or closes.

2. The bag blowing mechanism for facilitating quick filling of the packaging bag according to claim 1, characterized in that: It also includes a base and a support cylinder. The rotating disk and the fixed disk are arranged above the support cylinder. A driving device is also provided at the outer end of the base. The support cylinder is provided with a transmission mechanism for connecting the driving device and the rotating disk and realizing power transmission.

3. The bag blowing mechanism for facilitating quick filling of the packaging bag according to claim 1, characterized in that: Each of the aforementioned clamping components specifically includes, A support plate is fixed to the bottom of the rotating disk; The first slide rail is symmetrically arranged on both sides of the support plate and fixed to the bottom of the rotating disk; The clamping arm has one end slidably mounted on the first slide rail via the first slide block, and the other end extends to the outside of the rotating disk and is provided with a clamping claw. The first tension spring is connected between the clamping arms at both ends of the support plate; Rollers are positioned on the opposing surfaces of the two clamping arms and rotate in the up-down direction; The first push plate is set on the bottom of the support plate and moves up and down through the first telescopic device; The second slide rail is located on the side of the support plate; The second slide block, in conjunction with the second slide rail, slides and is fixed to the side of the first push plate to realize the up and down movement of the first push plate.

4. The bag blowing mechanism for quickly filling the packaging bag according to claim 3, characterized in that: The top side of the first push plate is inclined and keeps in contact with the roller. When the first push plate moves upward, it pushes the two clamping arms to move outward through the contact between the inclined surface and the roller. When the first push plate moves downward, the two clamping arms move inward through the tension of the first tension spring.

5. The bag blowing mechanism for quickly filling the packaging bag according to claim 3, characterized in that: The gripper includes a fixed gripper and a movable gripper. The fixed gripper is fixed to the inner side of the end of the gripping arm. One end of the movable gripper corresponds to the fixed gripper. The middle part of the movable gripper is rotatably mounted on the end of the gripping arm. A pull rod is provided at the other end of the movable gripper. A rotating arm is also provided at the other end of the pull rod. The middle part of the rotating arm is hinged to the gripping arm. One end of the rotating arm is hinged to the pull rod. A push rod is provided above the other end of the rotating arm. The push rod is in contact with the pushing component. A second tension spring connected to the fixed gripper is also provided below the connection end of the rotating arm and the pull rod.

6. The bag blowing mechanism for quick filling of the bag according to claim 1, wherein: The pushing assembly includes a second telescopic device and a second push plate. The second telescopic device is fixed above the fixed plate and keeps its telescopic end facing outward from the fixed plate. One end of the second push plate is fixed to the telescopic end of the second telescopic device, and the other end of the second push plate is bent downward and contacts the push rod.

7. The bag blowing mechanism for quick filling of the bag according to claim 1, wherein: The vacuum adsorption mechanism includes, The housing is fixed to the support rod; Two sliding rods are distributed vertically throughout the box and slide in a straight line. A pivot is located between two sliding rods and is rotatably mounted on the housing; The transmission plate is fixed in the middle to the outer end of the rotating shaft, and has strip holes at both ends; Two transmission rods are fixed to the sides of two sliding rods and locked into the slots in the transmission plate; Two vacuum suction cups are respectively positioned on the same side below the two sliding rods and are kept facing each other.

8. The bag blowing mechanism for facilitating quick filling of the packaging bag as claimed in claim 7 wherein: The exhaust pipe passes through the housing and remains fixed. A valve is also provided on the exhaust pipe. The valve is opened and closed by rotation. A gear is provided on the valve. A rack that meshes with the gear is provided on any of the sliding rods.

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