Bag opening mechanism of packaging machine

Abstract

The utility model provides a bag opening mechanism of a packaging machine. The bag opening mechanism solves the problems that an existing bag opening mechanism can only adapt to zippered bags of one size or type, and the cost is high when a mechanical arm is used for secondary bag opening. According to the bag opening device, the first sliding seat and the second sliding seat are driven by bag opening power to move on the sliding rod, so that the bag opening device can adapt to bag opening of bag bodies of different sizes, and after the bag bodies are opened for the first time through the first bag opening assembly arranged on the base, the bag bodies are further opened for the second time through the second bag opening assembly; secondary bag opening of the bag body is achieved through a mechanical mechanism, bag opening is sufficient, and the production cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machine equipment technical field, especially a packing machine bag opening mechanism. BACKGROUND

[0002] The bag feeding type packing machine is an automatic packing equipment widely used in food, medicine, chemical industry and other industries. At present, in order to facilitate the use of the later period, the zipper bag with self-sealing function is generally used as the packing bag, therefore, the zipper bag opening device is one of the key components of the bag feeding type packing machine, which is used to open the zipper bag in the packaging process, so as to fill the product into the packing bag.

[0003] In the traditional bag feeding type packing machine, the zipper bag opening device is usually composed of a mechanical arm and a grabber. The mechanical arm has sufficient rigidity and precision to ensure that the packing bag will not be torn or damaged during the bag opening process. The grabber is usually realized by vacuum suction or clamping jaw, etc., which is used to grab the opening part of the zipper bag and open it.

[0004] However, the traditional bag feeding type packing machine zipper bag opening device has some problems and challenges. For example, the bag opening speed of the traditional zipper bag opening device is relatively slow, which cannot meet the production needs of some high efficiency. In addition, the use of mechanical arm for bag opening requires high rigidity and precision of the mechanical arm, which leads to high manufacturing cost of the equipment. Moreover, the traditional grabber can usually only adapt to one size or type of zipper bag, and the grabber needs to be adjusted or replaced for different sizes or types of zipper bag, which increases the maintenance and operation cost of the equipment. The prior art has room for improvement. SUMMARY

[0005] The utility model equipment provides a packing machine bag opening mechanism in view of above-mentioned prior art, including two opposite setting base and the guide assembly that guides to this base, first bag opening assembly for first time bag opening and second bag opening assembly for second time bag opening are arranged respectively on the base, the bag opening power that realizes first time bag opening that the first slide and the second slide are driven to each other close or far apart is arranged on the packing machine, the second bag opening piece that can move along the horizontal direction and hold the bag body after is movably arranged on the base, the lifting power that drives the second bag opening piece moves along the vertical direction and is located in the bag body after is arranged on the base, the second bag opening piece can hold the bag body after and moves along with the base to realize second time bag opening under the drive of the bag opening power.

[0006] As preferred, the first bag opening assembly comprises a first bag opening piece arranged on the base.

[0007] As preferred, the second bag opening component comprises a mounting base fixedly arranged on the base, the lifting power is fixedly arranged on the mounting base, the lower end of the lifting power is fixedly arranged with a connecting base, two vertically extending slide rails are fixedly arranged on the base, the connecting base is movably arranged on the slide rails through two slide blocks, the second bag opening component is movably arranged on the connecting base, and a bag opening base for clamping the bag body in cooperation with the second bag opening component is arranged on the base and faces the second bag opening component.

[0008] As preferred, the second bag opening component is in the shape of 7, and the second bag opening component is arranged on the connecting base through the bag opening component power.

[0009] As preferred, the first bag opening component is two suction cups for adsorbing the bag body, the bag opening base is located between the two suction cups, and a movable groove for the movement of the connecting base is formed in the base.

[0010] As preferred, the guide component comprises two fixed bases fixedly arranged on the packaging machine, a guide component is arranged between the two fixed bases, the first slide base and the second slide base are movably arranged on the guide component, the two bases are arranged on the first slide base and the second slide base respectively, and the first slide base and the second slide base can move on the guide component under the driving of the bag opening power to realize the mutual approach and separation of the two bases.

[0011] As preferred, a driving shaft capable of rotating under the driving of the bag opening power is rotatably arranged on the packaging machine, a rocker is fixedly arranged on the upper end of the driving shaft, the rotation plane of the rocker is parallel to the plane where the two guide components are located, a first connecting rod and a second connecting rod for driving the movement of the first slide base and the second slide base are rotatably arranged at the two ends of the rocker respectively, one end of the first connecting rod is rotatably arranged on the first slide base, one end of the second connecting rod is rotatably arranged on the second slide base, and the first connecting rod and the second connecting rod are located on the two sides of the guide component.

[0012] As preferred, the driving shaft is rotatably arranged on the packaging frame through two shaft bases, and the bag opening power drives the rotation of the driving shaft through the driving wheel group.

[0013] As preferred, the guide component is two parallel arranged slide rods.

[0014] As preferred, a blowing base is arranged on the guide component, a blowing component for blowing the bag body after the first bag opening to completely open the bag body is fixedly arranged on the blowing base, and the blowing component is located between the two bases.

[0015] Compared with the prior art, this utility model can adapt to the opening of bags of different sizes by driving the first slide and the second slide on the guide member by the opening power. After the bag is opened for the first time by the first opening component set on the base, the bag is opened for the second time by the second opening component. The secondary opening of the bag is realized by the mechanical mechanism, which fully opens the bag and effectively reduces the production cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a structural diagram of the side with the opening power.

[0018] Figure 3 This is an exploded view of the base.

[0019] Figure 4 This is a schematic diagram showing the direction of joystick movement.

[0020] Figure 5 This is a schematic diagram showing the movement direction of each component when the bag is opened.

[0021] The markings in the diagram are: 1. Fixed seat; 2. Guide component; 3. First slide; 4. Second slide; 5. Base; 6. First bag opening assembly; 7. Second bag opening assembly; 8. Bag opening power; 9. Drive shaft; 10. Rocker arm; 11. First connecting rod; 12. Second connecting rod; 13. Shaft seat; 14. Drive wheel set; 15. First bag opening component; 16. Mounting seat; 17. Lifting power; 18. Connecting seat; 19. Slide rail; 20. Slider; 21. Second bag opening component; 22. Bag opening seat; 23. Bag opening component power; 24. Movable groove; 25. Air blowing seat; 26. Air blowing component. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0023] like Figures 1-4As shown, a bag-opening mechanism for a packaging machine includes two fixed seats 1 fixedly mounted on the packaging machine, with a guide 2 positioned between the two fixed seats 1. The guide 2 consists of two parallel sliding rods. A first slide 3 and a second slide 4 are movably mounted on the guide 2. Each of the first slide 3 and the second slide 4 has a base 5 fixedly mounted on it, with the two bases 5 facing each other. Each base 5 has a first bag-opening assembly 6 for initial bag opening and a second bag-opening assembly 7 for secondary bag opening. The packaging machine is equipped with a bag-opening power 8 that drives the first slide 3 and the second slide 4 to move closer or further apart along the guide 2 to achieve the initial bag opening. The movement distance of the first slide 3 and the second slide 4 on the guide 2 driven by the bag-opening power 8 can accommodate bag opening of different sizes. After the bag is opened for the first time by the first bag-opening assembly 6 on the base 5, the bag is further opened for the second time by the second bag-opening assembly 7. This mechanical mechanism achieves a second bag opening, ensuring thorough bag opening and effectively reducing production costs.

[0024] The packaging machine has a drive shaft 9 that rotates under the drive of the bag-opening power 8. A rocker arm 10 is fixedly mounted on the upper end of the drive shaft 9. The rotation plane of the rocker arm 10 is parallel to the plane of the two guide members 2. A first connecting rod 11 and a second connecting rod 12 are rotatably mounted at both ends of the rocker arm 10, driving the movement of the first slide 3 and the second slide 4, respectively. One end of the first connecting rod 11 is rotatably mounted on the first slide 3, and one end of the second connecting rod 12 is rotatably mounted on the second slide 4. The first connecting rod 11 and the second connecting rod 12 are located on opposite sides of the guide members 2. The drive shaft 9 is rotatably mounted on the packaging frame via two bearing seats 13, and the bag-opening power 8 drives the drive shaft 9 to rotate via a drive wheel set 14. During the first opening, the opening power 8 drives the drive shaft 9 to rotate via the drive wheel assembly 14. The drive shaft 9 then drives the rocker arm 10 to rotate. The drive shaft 9 is fixedly located at the center of the rocker arm 10. Through the rotation of the rocker arm 10 and the first connecting rod 11 and the second connecting rod 12 located on both sides of the guide member 2, the first connecting rod 11 and the second connecting rod 12 respectively achieve a push and pull action. The first connecting rod 11 pulls the first slide 3 towards the rocker arm 10, and the second connecting rod 12 pushes the second slide 4 away from the rocker arm 10. By rotating the rocker arm 10 in the opposite direction, the first slide 3 and the second slide 4 can be driven to move closer to each other. By adjusting the rotation angle of the rocker arm 10, the opening amplitude of the first opening can be adjusted, and bags of different sizes can be opened.

[0025] The first bag-opening assembly 6 includes a first bag-opening component 15 disposed on a base 5. The second bag-opening assembly 7 includes a mounting base 16 fixedly disposed on the base 5. A lifting power 17 is fixedly disposed on the mounting base 16, and a connecting seat 18 is fixedly disposed at the lower end of the lifting power 17. The lifting power 17 is a cylinder that drives the connecting seat 18 to move in a vertical direction. The base 5 has a movable groove 24 for the connecting seat 18 to move. Two slide rails 19 extending in a vertical direction are fixedly disposed on the base 5. The connecting seat 18 is movably disposed on the slide rails 19 via two sliders 20. A second bag-opening component 21 that can move in a horizontal direction and clamp the bag is movably disposed on the connecting seat 18. The base 5 is provided with a bag-opening seat 22 that cooperates with the second bag-opening component 21 to clamp the bag. The bag-opening seat 22 is directly opposite the second bag-opening component 21. The second bag-opening component 21 is 7-shaped and is mounted on the connecting seat 18 via a bag-opening power 23, which is a cylinder that drives the second bag-opening component 21 to move horizontally. The first bag-opening component 15 consists of two suction cups for adsorbing the bag body, and the bag-opening seat 22 is located between the two suction cups. The guide component 2 is provided with an air-blowing seat 25, on which an air-blowing component 26 is fixedly mounted for blowing air into the bag body after the first opening to fully open the bag body. The air-blowing component 26 is located between the two bases 5.

[0026] like Figure 5 As shown, when opening the bag, the opening power 8 drives the rocker arm 10 to rotate, causing the first slide 3 and the second slide 4 to approach each other, and causing the first opening component 15 on the base 5 to adhere to the bag body. By driving the rocker arm 10 to rotate in the opposite direction, the first slide 3 and the second slide 4 are moved away from each other, thus completing the first opening of the bag. The air blowing component 26 on the air blowing base 25 is located directly above the bag body. The air blowing component 26 blows air into the bag body after the first opening, making the bag body fully open. The opening component power 23 drives the two second opening components 21 to interact. Approaching and positioned above the bag body after the first opening, the connecting seat 18 is driven downward by the lifting power 17, causing the second opening component 21 to be inserted into the bag body after the first opening. Driven by the opening component power 23, it moves towards the opening seat 22, and the two second opening components 21 move away from each other. The bag body is located between the opening seat 22 and the second opening component 21. After the second opening component 21 clamps the bag body with the opening seat 22 under the drive of the opening component power 23, the rocker arm 10 is driven by the opening power 8 to continue to rotate in the opposite direction to complete the second opening.

[0027] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications to the specification derived therefrom are still within the protection scope of this utility model.

Claims

1. A packaging machine bag opening mechanism, characterized in that, The packaging machine comprises two oppositely arranged bases (5) and a guide assembly guiding the bases (5), the bases (5) are respectively provided with a first bag opening assembly (6) for opening a bag for the first time and a second bag opening assembly (7) for opening a bag for the second time, the packaging machine is provided with an opening power (8) driving the two bases (5) to move close to or away from each other to realize the first bag opening, the base (5) is movably provided with a second bag opening piece (21) capable of moving in a horizontal direction and clamping a bag body, the base (5) is provided with a lifting power (17) driving the second bag opening piece (21) to move in a vertical direction and be located in the bag body, and the second bag opening piece (21) can clamp the bag body and move with the base (5) driven by the opening power (8) to realize the second bag opening.

2. A bag opening mechanism for a packaging machine according to claim 1, characterized in that The first bag opening assembly (6) comprises a first bag opening piece (15) arranged on the base (5).

3. A packaging machine opening mechanism according to claim 2, characterised in that, The second bag opening assembly (7) comprises a mounting seat (16) fixedly arranged on the base (5), the lifting power (17) is fixedly arranged on the mounting seat (16), the lower end of the lifting power (17) is fixedly provided with a connecting seat (18), the base (5) is fixedly provided with two vertical sliding rails (19), the connecting seat (18) is movably arranged on the sliding rails (19) through two sliding blocks (20), the second bag opening piece (21) is movably arranged on the connecting seat (18), and the base (5) is provided with a bag opening seat (22) cooperating with the second bag opening piece (21) to clamp the bag body, and the bag opening seat (22) faces the second bag opening piece (21).

4. A packaging machine opening mechanism according to claim 3, characterised in that, The second bag opening piece (21) is in the shape of 7, and the second bag opening piece (21) is arranged on the connecting seat (18) through a bag opening piece power (23).

5. A bag opening mechanism for a packaging machine according to claim 3, wherein The first bag opening piece (15) is two suction cups for adsorbing the bag body, the bag opening seat (22) is located between the two suction cups, and the base (5) is provided with a movable groove (24) for the movement of the connecting seat (18).

6. A packaging machine opening mechanism according to claim 1, wherein The guide assembly comprises two fixed seats (1) fixedly arranged on the packaging machine, a guide piece (2) arranged between the two fixed seats (1), a first sliding seat (3) and a second sliding seat (4) movably arranged on the guide piece (2), and the two bases (5) are arranged on the first sliding seat (3) and the second sliding seat (4), respectively, the first sliding seat (3) and the second sliding seat (4) can move on the guide piece (2) driven by the opening power (8) to realize the mutual approach and separation of the two bases (5).

7. A packaging machine opening mechanism according to claim 6, characterised in that, A driving shaft (9) capable of rotating under the driving of the bag opening power (8) is rotatably arranged on the packaging machine, an oscillating lever (10) is fixedly arranged on the upper end of the driving shaft (9), the rotating plane of the oscillating lever (10) is parallel to the plane where the two guide members (2) are located, two first connecting rods (11) and second connecting rods (12) capable of driving the first slide (3) and the second slide (4) to move are rotatably arranged at the two ends of the oscillating lever (10), one end of the first connecting rod (11) is rotatably arranged on the first slide (3), one end of the second connecting rod (12) is rotatably arranged on the second slide (4), and the first connecting rod (11) and the second connecting rod (12) are located on the two sides of the guide member (2).

8. A packaging machine opening mechanism according to claim 7, characterised in that, The driving shaft (9) is rotatably arranged on the packaging frame through two shaft seats (13), and the bag opening power (8) drives the driving shaft (9) to rotate through a driving wheel set (14).

9. A packaging machine opening mechanism according to claim 6, wherein The guide member (2) is two parallel arranged slide rods.

10. A bag opening mechanism for a packaging machine according to claim 6, characterized in that An air blowing seat (25) is arranged on the guide member (2), an air blowing member (26) for blowing air into the bag body to completely open the bag body is fixedly arranged on the air blowing seat (25), and the air blowing member (26) is located between the two bases (5).

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