Packaging bag sealing mechanism

Abstract

The packaging bag sealing mechanism comprises a support, a first heat sealing block and a second heat sealing block which are matched with each other are symmetrically arranged on the two sides of the lower portion of the support, the two ends of the first heat sealing block are rotationally connected with the support through first rotating arms, and the two ends of the second heat sealing block are rotationally connected with the support through second rotating arms; a blowing mechanism is arranged between the first heat sealing block and the second heat sealing block and comprises a shell connected with the support, an opening is formed in the lower portion of the shell, an air pipe is rotationally arranged in the shell, a plurality of air holes are evenly formed in the bottom of the air pipe in the axial direction, and a blowing driving mechanism for driving the air pipe to rotate in the shell to adjust the angle is arranged on one side of the shell. The packaging machine has the beneficial effects that bag openings are cleaned in the sealing process, the bag opening cleaning effect is improved, meanwhile, recycling of products is achieved, pollution to the working environment is avoided, and the working efficiency of the packaging machine is improved.

Description

Technical Field

[0001] This application relates to the field of packaging machine technology, and in particular to a packaging bag sealing mechanism. Background Technology

[0002] A bag-making and packaging machine is a production line device that manufactures packaging bags and then places the objects to be packaged into the formed bags for packaging. Traditional bag-making and packaging machines mainly consist of a disc-shaped worktable and film conveying stations, bag forming stations, feeding stations, and packaging sealing stations arranged around the disc-shaped worktable.

[0003] During the product packaging process, some product may stick to the bag opening. When sealing the bag, the presence of product at the opening can cause incomplete sealing, affecting the sealing quality of the packaging bag. Utility Model Content

[0004] To address the problem in existing packaging machines where some product adheres to the bag opening during the packaging process, resulting in incomplete sealing and affecting the sealing quality of the packaging bag, this application provides a packaging bag sealing mechanism.

[0005] The packaging bag sealing mechanism provided in this application adopts the following technical solution: A packaging bag sealing mechanism includes a support, with a first heat-sealing block and a second heat-sealing block symmetrically arranged on both sides below the support. The two ends of the first heat-sealing block are rotatably connected to the support through a first rotating arm, and the two ends of the second heat-sealing block are rotatably connected to the support through a second rotating arm. A blowing mechanism is provided between the first heat-sealing block and the second heat-sealing block. The blowing mechanism includes a housing connected to the support, with an opening at the bottom of the housing. An air pipe is rotatably arranged inside the housing, and a plurality of air holes are evenly opened along the axial direction at the bottom of the air pipe. A blowing drive mechanism is provided on one side of the housing to drive the air pipe to rotate inside the housing and adjust the angle.

[0006] By adopting the above technical solution, when sealing the packaging bag, the packaging bag moves to the bottom of the sealing mechanism. The first rotating arm and the second rotating arm drive the first heat sealing block and the second heat sealing block to move toward the packaging bag, respectively. The first heat sealing block and the second heat sealing block clamp the opening of the packaging bag. Then, the blowing mechanism is activated, and compressed air is introduced into the air pipe. The compressed air is discharged to the opening of the packaging bag through the air hole. At the same time, the blowing drive mechanism drives the air pipe to rotate inside the housing, thereby changing the blowing angle of the air hole. The compressed air is used to blow away the product residue at the opening of the packaging bag. During the blowing process, the first heat sealing block and the second heat sealing block heat seal the opening of the bag.

[0007] Optionally, heat sealing strips are provided on opposite sides of the first heat sealing block and the second heat sealing block.

[0008] By adopting the above technical solution, when the first heat-sealing block and the second heat-sealing block are closed, the heat-sealing strip heats up to seal the packaging bag.

[0009] Optionally, the first rotating arm and the second rotating arm are connected by a transmission link, and the two ends of the transmission link are rotatably connected to the first rotating arm and the second rotating arm, respectively.

[0010] By adopting the above technical solution, the first rotating arm and the second rotating arm are connected by a transmission link. When performing sealing operations, the first rotating arm and the second rotating arm move synchronously through the transmission link, thereby driving the first heat sealing block and the second heat sealing block to move synchronously to achieve sealing operations, improving the stability of the sealing mechanism and improving the sealing quality.

[0011] Optionally, a drive mechanism is provided on one side of the bracket. The drive mechanism includes a drive cylinder, which is rotatably connected to the bracket via a rotating shaft in the middle. The end of the piston rod in the drive cylinder is hinged to the first rotating arm.

[0012] By adopting the above technical solution, the first rotating arm is driven to rotate around the connection between the piston rod in the driving cylinder and the support during the extension and retraction of the driving cylinder.

[0013] Optionally, a matching baffle is provided above the first heat-sealing block and the second heat-sealing block. The two baffles cooperate to form a box with an open top when the first heat-sealing block and the second heat-sealing block are closed. The box is fitted onto the lower end of the housing.

[0014] By adopting the above technical solution, when the first heat-sealing block and the second heat-sealing block cooperate with each other, the two baffles cooperate to form a box with an open top. The box is fitted on the lower end of the shell and cooperates with the shell to form a closed cavity. When the purging mechanism is started, the products and impurities that are purged will be confined in the cavity formed by the box and the shell, which is convenient for collection and cleaning.

[0015] Optionally, the purging drive mechanism includes a mounting bracket disposed on one side of the housing, a purging cylinder disposed inside the mounting bracket, the end of the purging cylinder being rotatably connected to the mounting bracket, a connecting rod extending upward from the middle of the cylinder, and the end of the piston rod in the purging cylinder being rotatably connected to the connecting rod.

[0016] By adopting the above technical solution, when the blowing mechanism is started, the piston rod in the blowing cylinder reciprocates and extends, driving the air pipe to rotate inside the housing through the connecting rod, thereby adjusting the blowing angle of the air hole at the bottom of the air pipe and achieving full blowing of the bag opening.

[0017] Optionally, the housing is provided with a connecting pipe that communicates with the interior of the housing, and the connecting pipe is connected to a dust extraction pipe.

[0018] By adopting the above technical solution, the connecting pipe is connected to the dust collection pipe. During the blowing process, the dust collection pipe sucks up the product blown up from inside the shell, thereby effectively cleaning the bag opening and recycling the cleaned product.

[0019] Optionally, a connecting frame is provided above the bracket, and the connecting frame has a waist-shaped groove.

[0020] By adopting the above technical solution, the sealing mechanism is connected to the packaging machine through the waist-shaped groove on the connecting frame. By setting the waist-shaped groove, the installation height of the sealing mechanism can be adjusted as needed, thus expanding the applicable range of the sealing mechanism.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. In this application, a blowing mechanism is set in the middle of the sealing mechanism. The blowing mechanism is equipped with a rotatable air pipe. During the sealing process, compressed air is blown to the bag opening through the cylinder, which realizes the cleaning of the bag opening and improves the sealing quality of the packaging bag.

[0023] 2. In this application, a connecting pipe is provided above the blowing mechanism, which is connected to the dust collection pipe. The first heat sealing block and the second heat sealing block are provided with matching baffles. The two baffles cooperate to form a box, and the box cooperates with the shell to form a closed chamber. While blowing, the product is confined inside the chamber and recycled through the dust collection pipe. This improves the cleaning effect, realizes the recycling of the product, avoids pollution of the working environment, and improves the operating efficiency of the packaging machine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a packaging bag sealing mechanism in an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the left-side structure of a packaging bag sealing mechanism in an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the blowing mechanism structure of a packaging bag sealing mechanism in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. First heat-sealing block; 3. Second heat-sealing block; 4. First rotating arm; 5. Second rotating arm; 6. Drive mechanism; 7. Baffle; 8. Heat-sealing strip; 9. Connecting frame; 10. Waist-shaped groove; 11. Blowing mechanism; 12. Drive cylinder; 13. Rotating shaft; 14. Transmission connecting rod; 15. Housing; 16. Air pipe; 17. Connecting rod; 18. Air hole; 19. Mounting plate; 20. Blowing cylinder; 21. Mounting frame; 22. Connecting pipe; 23. Connecting part; 24. Rotating shaft. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0029] Please see Figure 1-3 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application's implementation.

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This embodiment discloses a packaging bag sealing mechanism.

[0032] Reference Figure 1 and Figure 2 The system includes a support 1, with two symmetrical connecting frames 9 arranged above the support 1. Each connecting frame 9 has a waist-shaped groove 10. A first heat-sealing block 2 and a second heat-sealing block 3 are symmetrically arranged on both sides below the support 1. A heat-sealing strip is provided on the opposite side of the first heat-sealing block 2 and the second heat-sealing block 3. The two ends of the first heat-sealing block 2 are rotatably connected to the support 1 through a first rotating arm 4. The two first rotating arms 4 are connected to each other through a rotating shaft 24. The two ends of the second heat-sealing block 3 are rotatably connected to the support 1 through a second rotating arm 5. The two second rotating arms 5 are connected to each other through a rotating shaft 24. The first rotating arms 4 and the second rotating arms 5 are connected by a transmission link 14. The two ends of the transmission link 14 are rotatably connected to the first rotating arms 4 and the second rotating arms 5, respectively. A drive cylinder 12 is provided at both ends on one side of the support 1. The piston rod end of the drive cylinder 12 is rotatably connected to one side of the first rotating arm 4. A blowing mechanism 11 is provided below the support 1. The blowing mechanism 11 is located between the first heat-sealing block 2 and the second heat-sealing block 3. A baffle 7 is provided on the first heat-sealing block 2 and the second heat-sealing block 3.

[0033] Reference Figure 3The blowing mechanism 11 includes a housing 15 connecting the bracket 1. The housing 15 has an opening at the bottom. An air pipe 16 is rotatably arranged inside the housing 15. Both ends of the air pipe 16 are rotatably connected to the mounting plate 19. The mounting plate 19 is connected to the housing 15. Several air holes 18 are evenly opened along the axial direction at the bottom of the air pipe 16. A blowing drive mechanism for adjusting the angle of the air pipe 16 is provided on one side of the housing 15. The blowing drive mechanism includes a mounting frame 21 provided on one side of the housing 15. A blowing cylinder 20 is provided inside the mounting frame 21. The end of the blowing cylinder 20 is rotatably connected to the mounting frame 21. A connecting rod 17 extends upward from the middle of the air pipe 16. The end of the piston rod in the blowing cylinder 20 is rotatably connected to the connecting rod 17. A connecting pipe 22 communicating with the inside of the housing 15 is provided on the housing 15. The connecting pipe 22 is connected to the dust collection pipe.

[0034] The implementation principle of the packaging bag sealing mechanism in this embodiment is as follows: When sealing the packaging bag, the packaging bag moves between the first heat-sealing block 2 and the second heat-sealing block 3 below the support 1. The piston rod in the drive cylinder 12 extends downward to drive the first rotating arm 4 to move around the rotating axis connected to the support 1 towards the bag opening. The first rotating arm 4 drives the second rotating arm 5 to rotate synchronously towards the bag opening through the connecting rod 17. The first heat-sealing block 2 and the second heat-sealing block 3 clamp the bag opening, and the heat-sealing strips 8 on the first heat-sealing block 2 and the second heat-sealing block 3 heat-seal the bag opening. When the first heat-sealing block 2 and the second heat-sealing block 3 clamp the bag opening, the two baffles 7 also move in tandem. The two parts cooperate to form a box with an open top. The box is fitted under the shell 15, and the box and the shell 15 cooperate to form a closed chamber. Compressed air is introduced into the air pipe 16 and blown to the bag opening through the air hole 18. During the blowing process, the blowing cylinder 20 drives the air pipe 16 to rotate back and forth through the connecting rod 17 to adjust the angle of the air hole 18, thereby blowing away the product remaining at the bag opening with compressed air. At the same time, the dust suction pipe draws the air mixed with the product inside the chamber through the connecting pipe 22 to collect the product. Thus, the product remaining at the bag opening is cleaned and recycled through the cooperation of the air pipe 16 and the dust suction pipe.

[0035] In summary, this application incorporates a blowing mechanism within the sealing mechanism. This blowing mechanism includes a rotatable air pipe. During the sealing process, compressed air is blown towards the bag opening via a cylinder, effectively cleaning the bag opening and improving the sealing quality of the packaging bag. Furthermore, a connecting pipe is installed above the blowing mechanism, connecting to a dust collection pipe. Matching baffles are installed on the first and second heat-sealing blocks, forming a box-like structure. This box-like structure, in conjunction with the outer shell, forms a closed chamber. Simultaneously, while blowing, the product is confined within the chamber and recovered via the dust collection pipe. This improves the cleaning effect, enables product recycling, avoids environmental pollution, and increases the efficiency of the packaging machine. Therefore, this application effectively overcomes the shortcomings of existing technologies and possesses high industrial applicability.

[0036] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered within the protection scope of this application.

Claims

1. A packaging bag sealing mechanism, comprising a support (1), a first heat sealing block (2) and a second heat sealing block (3) are symmetrically arranged below the support (1), the two ends of the first heat sealing block (2) are rotatably connected to the support (1) through a first rotating arm (4), the two ends of the second heat sealing block (3) are rotatably connected to the support (1) through a second rotating arm (5), characterized in that, A purging mechanism (11) is provided between the first heat-sealing block (2) and the second heat-sealing block (3). The purging mechanism (11) includes a housing (15) connected to the bracket (1). The housing (15) has an opening at the bottom. An air pipe (16) is rotatably provided inside the housing (15). Several air holes (18) are evenly opened along the axial direction at the bottom of the air pipe (16). A purging drive mechanism is provided on one side of the housing (15) to drive the air pipe (16) to rotate inside the housing (15) and adjust the angle.

2. A bag closure mechanism according to claim 1, wherein: A heat sealing strip (8) is provided on one side opposite to the first heat sealing block (2) and the second heat sealing block (3).

3. A bag closure mechanism according to claim 1, wherein: The first rotating arm (4) and the second rotating arm (5) are connected by a transmission link (14), and the two ends of the transmission link (14) are rotatably connected to the first rotating arm (4) and the second rotating arm (5) respectively.

4. A bag closure mechanism according to claim 3, wherein: A drive mechanism (6) is provided on one side of the bracket (1). The drive mechanism (6) includes a drive cylinder (12). The drive cylinder (12) is rotatably connected to the bracket (1) through a rotating shaft (13). The end of the piston rod in the drive cylinder (12) is hinged to the first rotating arm (4).

5. A bag closure mechanism according to claim 1, wherein: A matching baffle (7) is provided above the first heat-sealing block (2) and the second heat-sealing block (3). The two baffles (7) cooperate to form a box with an open top when the first heat-sealing block (2) and the second heat-sealing block (3) are closed. The box is fitted onto the lower end of the shell (15).

6. A bag closure mechanism according to claim 1, wherein: The purging drive mechanism includes a mounting bracket (21) disposed on one side of the housing (15), a purging cylinder (20) disposed inside the mounting bracket (21), the end of the purging cylinder (20) being rotatably connected to the mounting bracket (21), a connecting rod (17) extending upward from the middle of the air pipe (16), and the end of the piston rod in the purging cylinder (20) being rotatably connected to the connecting rod (17).

7. A bag sealing mechanism according to claim 5, wherein: The housing (15) is provided with a connecting pipe (22) that connects to the inside of the housing (15), and the connecting pipe (22) is connected to a dust suction pipe.

8. A bag closure mechanism according to claim 1, wherein: A connecting frame (9) is provided above the bracket (1), and a waist-shaped groove (10) is provided on the connecting frame (9).

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