Bag opening mechanism of linear bag feeding packaging machine

Abstract

The utility model relates to the technical field of bag feeding machine equipment, and discloses a bag opening mechanism of a linear bag feeding packaging machine, which comprises a first bag opening device, a second bag opening device and a transmission device, the first bag opening device comprises a sliding rail, two groups of sliding blocks are arranged on the sliding rail in a sliding manner, first suction cups are arranged on the sliding blocks, and the two groups of first suction cups are oppositely arranged; the second bag opening device is arranged below the first bag opening device and comprises a mounting rod, two sets of rockers are rotationally arranged on the mounting rod, second suction cups are arranged at the tops of the rockers, and the two sets of second suction cups are oppositely arranged; the transmission device comprises a transmission shaft, the top end of the transmission shaft is connected with the two sliding blocks through a first pushing device, and the bottom end of the transmission shaft is connected with the two rockers through a second pushing device. The bag opening device is simple in structure, the bag opening can be opened, the bag bottom can be pulled open, and the bag opening effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag feeding machine equipment, in particular to a bag opening mechanism of a linear bag feeding and packaging machine. Background Art

[0002] During the production process, hemoconcentrated dialysis powder is packaged in two ways: barrels and bags. During the bagging process, the bags need to be opened. The traditional way of opening the bags is manual. However, with the continuous improvement of equipment, bag-feeding packaging machines have replaced manual packaging. For example, the Chinese utility model patent with announcement number CN217970133U discloses a bag opening mechanism of a bag-feeding packaging machine, which includes a cam transmission assembly, a bottom drive assembly, and an upper drive assembly. The bottom drive assembly is connected to the cam transmission assembly, and the upper drive assembly is connected to the bottom drive assembly. The upper drive assembly is equipped with a short rod suction cup assembly and a long rod suction cup assembly. The cam transmission assembly drives the bottom drive assembly to rotate, and then drives the upper drive assembly to swing, driving the short rod suction cup assembly and the long rod suction cup assembly to move away from or towards each other.

[0003] The above patent has at least the following problems: first, only the bag mouth can be opened. For larger-sized packaging bags, the bag bottom cannot be completely opened, which affects product packaging and requires a jet device to blow the bag into expansion; second, the structure is relatively complex. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, the utility model develops a bag opening mechanism for a linear bag feeding and packaging machine. The utility model has a simple structure and can both open the bag mouth and pull open the bag bottom, thereby effectively improving the bag opening effect.

[0005] The technical solution to the technical problem solved by the utility model is as follows: a bag opening mechanism of a linear bag-feeding packaging machine includes a first bag opening device, a second bag opening device and a transmission device, the first bag opening device includes a slide rail, two sets of sliders are slidably provided on the slide rail, and the sliders are provided with first suction cups, and the two sets of first suction cups are arranged opposite to each other;

[0006] The second bag opening device is arranged below the first bag opening device, and the second bag opening device includes a mounting rod, on which two sets of rocking arms are rotatably provided, and the tops of the rocking arms are provided with second suction cups, and the two sets of second suction cups are arranged opposite to each other;

[0007] The transmission device comprises a transmission shaft, the top end of the transmission shaft is connected to the two sets of sliders through a first pushing device, and the bottom end of the transmission shaft is connected to the two sets of rocking arms through a second pushing device.

[0008] As an optimization, an air blow pipe is further included, which is arranged between the two sets of first suction cups, and the two sets of first suction cups are arranged below the air blow pipe. By arranging the air blow pipe and the mounting plate, air can be blown into the packaging bag after the bag is opened, further opening the bag and improving the bag opening effect.

[0009] As an optimization, the first pushing mechanism includes a first rotating plate and two sets of first push rods. The middle portion of the first rotating plate is fixedly connected to the top of the transmission shaft, and the ends of the first rotating plate are connected to the sliders via the first push rods. The first rotating plate allows for mounting of the two sets of first push rods, allowing one set of first push rods to be pushed forward while the other set of first push rods is pulled backward, thereby moving the two sets of sliders closer to or further away from each other.

[0010] As an optimization, the second pushing mechanism includes a second rotating plate and two sets of second push rods. The middle portion of the second rotating plate is fixedly connected to the bottom end of the transmission shaft, and the ends of the second rotating plate are connected to the rocker arms via the second push rods. The second rotating plate allows for mounting of the two sets of second push rods, allowing one set of second push rods to be pushed forward while the other set of second push rods is pulled backward, thereby moving the two rocker arms closer to or further away from each other.

[0011] As an optimization, the rocker includes a rotating rod and a telescopic rod. The first end of the rotating rod is hinged to the mounting rod, and the second end of the rotating rod is connected to the first end of the telescopic rod via a fastening bolt. The second end of the telescopic rod is equipped with a second suction cup. By providing the rotating rod and telescopic rod, the length of the rocker can be adjusted according to the length of the packaging bag, adapting to various sizes of packaging bags.

[0012] As an optimization, a slot is provided on the second end of the rotating rod, within which a bolt hole is provided. The first end of the telescopic rod slides within the slot, and a fourth waist-shaped hole is provided along the sliding direction of the first end of the telescopic rod. The rod portion of the fastening bolt passes through the fourth waist-shaped hole and is provided within the bolt hole. The slot allows the telescopic rod to be positioned, and the fourth waist-shaped hole facilitates adjustment of the telescopic rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By providing a slide rail, a slider, and a first suction cup, the opening of the packaging bag can be opened. The slider can drive the first suction cup to move along the slide rail, so that the two groups of first suction cups approach each other to absorb the bag opening of the packaging bag, and the two groups of first suction cups move away from each other to open the bag opening of the packaging bag. By providing a mounting rod and a rocker, the second suction cup can be installed. The rocker can drive the two groups of second suction cups to reciprocate in a fan-shaped trajectory, so that the two groups of second suction cups approach each other to absorb the bag bottom of the packaging bag, and the two groups of second suction cups move away from each other to open the bag bottom of the packaging bag. By providing a transmission shaft, a first pushing device, and a second pushing device, the two groups of sliders and the two groups of rockers can be driven to move synchronously, facilitating bag opening and improving bag opening efficiency and effect. The utility model has a simple structure and can both open the bag opening and open the bag bottom, effectively improving the bag opening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of the first embodiment of the present utility model.

[0016] In the figure: 1. Slide rail; 2. Slider; 3. Mounting block; 4. First suction cup; 5. First waist-shaped hole; 6. Mounting rod; 7. Rocker; 8. Second suction cup; 9. Transmission shaft; 10. Air blow pipe; 11. Mounting plate; 12. Second waist-shaped hole; 13. First rotating plate; 14. First push rod; 15. Second rotating plate; 16. Second push rod; 17. Rotating rod; 18. Telescopic rod; 19. Adjustment plate; 20. Third waist-shaped hole; 21. Slide groove; 22. Fourth waist-shaped hole. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0018] Example 1

[0019] Figure 1 An embodiment of the present invention is as follows: Figure 1 As shown, a bag opening mechanism of a linear bag-feeding packaging machine includes a first bag opening device, a second bag opening device and a transmission device. The first bag opening device includes a slide rail 1. The slide rail 1 is two sets of parallel sliding rods. The two ends of the slide rail 1 are set on the frame of the bag-feeding packaging machine (not shown in the figure). Two sets of sliders 2 are slidingly provided on the slide rail 1. The two ends of the slider 2 are respectively slidably connected to the two sets of sliding rods. The two sets of sliders 2 are provided with first suction cups 4 through mounting blocks 3. The two sets of first suction cups 4 are relatively arranged below the slider 2. The mounting block is provided with a first waist The first waist-shaped hole 5 is provided with a bolt, and the rod of the bolt passes through the first waist-shaped hole 5 and is connected to the bolt hole on the slider 2; by setting the slide rail 1, the slider 2 and the first suction cup 4, the bag opening of the packaging bag can be opened, and the slider 2 can drive the first suction cup 4 to move along the slide rail 1, so that the two groups of first suction cups 4 are close to each other to absorb the bag opening of the packaging bag, and the two groups of first suction cups 4 are moved away from each other to open the bag opening of the packaging bag; by setting the mounting block 3 and the first waist-shaped hole 5, the first suction cup 4 can be installed and the position of the first suction cup 4 can be conveniently adjusted;

[0020] The second bag opening device is arranged below the first bag opening device, and the second bag opening device includes a mounting rod 6, on which two sets of rocking arms 7 are rotatably provided. The tops of the two sets of rocking arms 7 are provided with second suction cups 8, and the two sets of second suction cups 8 are arranged opposite to each other. By providing the mounting rod 6 and the rocking arms 7, the second suction cups 8 can be installed. The rocking arms 7 can drive the two sets of second suction cups 8 to reciprocate in a fan-shaped trajectory, so that the two sets of second suction cups 8 are close to each other to absorb the bottom of the packaging bag, and the two sets of second suction cups 8 are moved away from each other to open the bottom of the packaging bag.

[0021] The transmission device includes a drive shaft 9, which is mounted on the frame of the bag-feeding packaging machine (not shown) via a mounting bracket. The top of the drive shaft 9 is connected to the two sets of sliders 2 via a first pusher. The middle of the drive shaft 9 is connected to the motor via a transmission gear. The bottom of the drive shaft 9 is connected to the two sets of rocker arms 7 via a second pusher. The arrangement of the drive shaft 9, the first pusher, and the second pusher drives the two sets of sliders 2 and the two sets of rocker arms 7 to move synchronously, facilitating bag opening and improving both efficiency and effectiveness.

[0022] like Figure 1 As shown, it also includes an air blow pipe 10, which is set on the frame of the bag packaging machine (not shown in the figure) through a mounting plate 11. The mounting plate 11 is provided with a second waist-shaped hole 12. The air blow pipe 10 is set in the second waist-shaped hole 12 through two sets of mounting nuts. The air blow pipe 10 is set between the two sets of first suction cups 4, and the air blow pipe 10 is set between the two sets of slide bars. The two sets of first suction cups 4 are set below the air blow pipe 10. By setting the air blow pipe 10 and the mounting plate 11, it is possible to blow air into the packaging bag after the bag is opened, further open the bag, and improve the bag opening effect; by providing the second waist-shaped hole 12, it is possible to easily adjust the position of the air blow pipe 10.

[0023] like Figure 1 As shown, the first pushing device includes a first rotating plate 13 and two groups of first push rods 14. The middle part of the first rotating plate 13 is fixedly connected to the top end of the transmission shaft 9. The first end of the first rotating plate 13 is connected to a group of sliders 2 through a group of first push rods 14, and the second end of the first rotating plate 13 is connected to another group of sliders 2 through another group of first push rods 14. Both ends of the first push rods 14 are provided with bearings. It should be noted that the two groups of first push rods 14 are of different lengths. The longer group of first push rods 14 is connected to the group of sliders 2 farther from the first rotating plate 13, and the shorter group of first push rods 14 is connected to the group of sliders 2 closer to the first rotating plate 13. By providing the first rotating plate 13, two groups of first push rods 14 can be installed, and one group of first push rods 14 can be pushed forward while the other group of first push rods 14 is pulled backward, thereby causing the two groups of sliders 2 to move closer to or farther away from each other.

[0024] like Figure 1As shown, the second pushing device includes a second rotating plate 15 and two groups of second push rods 16. The middle part of the second rotating plate 15 is fixedly connected to the bottom end of the transmission shaft 9. The first end of the second rotating plate 15 is connected to a group of rocking arms 7 through a group of second push rods 16. The second end of the second rotating plate 15 is connected to another group of rocking arms 7 through another group of second push rods 16. Both ends of the first push rod 14 are provided with joint bearings. It should be noted that the two groups of second push rods 16 are of different lengths. The longer group of second push rods 16 is connected to a group of rocking arms 7 farther away from the second rotating plate 15, and the shorter group of second push rods 16 is connected to a group of rocking arms 7 closer to the second rotating plate 15. By providing the second rotating plate 15, the two groups of second push rods 16 can be installed, and one group of second push rods 16 can be pushed forward while the other group of second push rods 16 is pulled backward, thereby making the two groups of rocking arms 7 move closer to or farther away from each other.

[0025] like Figure 1 As shown, the rocker 7 includes a rotating rod 17 and a telescopic rod 18. The first end of the rotating rod 17 is hinged to the mounting rod 6, and the second end of the rotating rod 17 is connected to the first end of the telescopic rod 18 via a fastening bolt. The second end of the telescopic rod 18 is provided with an adjustment plate 19, and a third waist-shaped hole 20 is horizontally defined in the adjustment plate 19. The line defining the third waist-shaped hole 20 is perpendicular to the plane of the rocker 7's motion trajectory. The second suction cup 8 is secured within the third waist-shaped hole 20 via two sets of mounting nuts. By providing the rotating rod 17 and telescopic rod 18, the length of the rocker 7 can be adjusted according to the length of the packaging bag, accommodating packaging bags of various sizes. The adjustment plate 19 and the third waist-shaped hole 20 also allow the position of the second suction cup 8 to be adjusted.

[0026] like Figure 1 As shown, the second end of the rotating rod 17 is provided with a slot 21, which has a bolt hole within it. The first end of the telescopic rod 18 is slidably mounted within the slot 21. A fourth waist-shaped hole 22 is provided at the first end of the telescopic rod 18 along the sliding direction. The shaft of the fastening bolt passes through the fourth waist-shaped hole 22 and is mounted within the bolt hole. The slot 21 allows the telescopic rod 18 to be positioned, and the fourth waist-shaped hole 22 facilitates adjustment of the telescopic rod 18.

[0027] When in use, the motor first rotates forward, and drives the transmission shaft 9 to rotate through the transmission gear, and the transmission shaft 9 drives the first rotating plate 13 and the second rotating plate 15 to swing synchronously, and the first rotating plate 13 pushes the shorter set of first push rods 14 forward and pulls the longer set of first push rods 14 backward, so that the two sets of sliders 2 are close to each other, so that the two sets of first suction cups 4 are respectively fitted with the bag openings on both sides of the packaging bag; at the same time, the second rotating plate 15 pushes the shorter set of second push rods 16 forward and pulls the longer set of second push rods 16 backward, so that the two sets of swing The rods 7 approach each other, causing the two sets of second suction cups 8 to respectively adhere to the bottom of the bag on both sides; then, a vacuum pump connected to the first suction cups 4 and the second suction cups 8 via an air pipe begins to draw a vacuum, causing the first suction cups 4 and the second suction cups 8 to absorb the bag; then, the motor reverses, causing the two sets of sliders 2 to move away from each other, causing the two sets of rocker arms 7 to move away from each other, causing the two sets of first suction cups 4 to open the bag opening, and the two sets of second suction cups 8 to pull open the bag bottom; at this time, the air blow pipe 10 blows out pressurized air, fully expanding the bag, completing the bag opening. The utility model has a simple structure and can both open the bag opening and stretch the bag bottom, effectively improving the bag opening effect.

[0028] The descriptions of the orientation or relative position relationship of the structure in the present invention, such as the orientation or relative position relationship indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

Claims

1. A bag opening mechanism for a linear bag-feeding packaging machine, characterized by: The invention comprises a first bag opening device, a second bag opening device and a transmission device, wherein the first bag opening device comprises a slide rail (1), two groups of sliders (2) are slidably provided on the slide rail (1), and first suction cups (4) are provided on the sliders (2), and the two groups of first suction cups (4) are arranged opposite to each other; The second bag opening device is arranged below the first bag opening device, and the second bag opening device comprises a mounting rod (6), two sets of rocking arms (7) are rotatably provided on the mounting rod (6), a second suction cup (8) is provided on the top of the rocking arm (7), and the two sets of second suction cups (8) are arranged opposite to each other; The transmission device comprises a transmission shaft (9), the top end of the transmission shaft (9) is connected to the two sets of sliders (2) through a first pushing device, and the bottom end of the transmission shaft (9) is connected to the two sets of rocking arms (7) through a second pushing device.

2. The bag opening mechanism of the linear bag-feeding packaging machine according to claim 1 is characterized by: The invention also comprises an air blowing pipe (10), which is arranged between the two groups of first suction cups (4), and the two groups of first suction cups (4) are arranged below the air blowing pipe (10).

3. The bag opening mechanism of the linear bag-feeding packaging machine according to claim 2, characterized in that: The first pushing device comprises a first rotating plate (13) and two sets of first push rods (14). The middle portion of the first rotating plate (13) is fixedly connected to the top end of the transmission shaft (9), and the end of the first rotating plate (13) is connected to the slider (2) via the first push rods (14).

4. The bag opening mechanism of the linear bag-feeding packaging machine according to claim 3, characterized in that: The second pushing device comprises a second rotating plate (15) and two sets of second push rods (16). The middle portion of the second rotating plate (15) is fixedly connected to the bottom end of the transmission shaft (9), and the end of the second rotating plate (15) is connected to the rocker (7) through the second push rods (16).

5. The bag opening mechanism of the linear bag-feeding packaging machine according to any one of claims 1 to 4, characterized in that: The rocker (7) comprises a rotating rod (17) and a telescopic rod (18), wherein the first end of the rotating rod (17) is hinged to the mounting rod (6), the second end of the rotating rod (17) is connected to the first end of the telescopic rod (18) via a fastening bolt, and the second end of the telescopic rod (18) is provided with a second suction cup (8).

6. The bag opening mechanism of the linear bag-feeding packaging machine according to claim 5, characterized in that: A slide groove (21) is provided on the second end of the rotating rod (17), a bolt hole is provided in the slide groove (21), the first end of the telescopic rod (18) is slidably arranged in the slide groove (21), the first end of the telescopic rod (18) is provided with a fourth waist-shaped hole (22) along the sliding direction, and the rod portion of the fastening bolt passes through the fourth waist-shaped hole (22) and is arranged in the bolt hole.

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