Edge sealing and rolling device for packaging bag

Abstract

The utility model relates to the technical field of packaging bag processing equipment, in particular to an edge sealing and rolling device for a packaging bag, which is characterized in that in the process of exhausting the packaging bag, the bag body of the packaging bag is respectively rolled and compacted by two adjacent compression rollers, and the packaging bag at an air guide groove is not compacted. Therefore, an exhaust channel with the proper size is formed in the packaging bag, it is ensured that in the exhaust process, the space in the packaging bag is communicated with the atmospheric environment, real-time exhaust is achieved, then gas in the packaging bag can be continuously exhausted from the multiple exhaust channels to the feeding direction of the packaging bag, the situation that the packaging bag expands in the exhaust process is avoided, and the packaging bag is prevented from being damaged. And the smoothness of the packaging bag is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag processing equipment, in particular to an edge sealing and rolling device for packaging bags. Background Art

[0002] In the production process of packaging bags, it is usually necessary to exhaust the air in the packaging bags for easy storage and transportation. The commonly used exhaust method is to exhaust the gas from the opening at one end of the packaging bag by rolling.

[0003] Patent CN205499533U discloses a roller rolling method. In this patent, when the belt moves synchronously with the pulley, the packaging bag on the belt horizontal plane moves with the belt and passes under the exhaust roller. A certain squeezing force will be generated between the packaging bag and the exhaust roller, thereby generating a certain friction between the packaging bag and the exhaust roller. Under the action of their own gravity, the two exhaust rollers roll the packaging bag multiple times to remove the gas in the packaging bag and improve the flatness of the packaging bag. Although the above-mentioned prior art can exhaust the air in the packaging bag, when the packaging bag is long, after the front end of the packaging bag passes through the first exhaust roller, a little air will enter the front end of the packaging bag during the process of moving to the second exhaust roller; when the front end of the packaging bag is pressed tightly under the second exhaust roller, the rear end of the packaging bag is still pressed tightly under the first exhaust roller. At this time, the part of the packaging bag located between the two exhaust rollers will expand due to the entering little air, resulting in a discount in the flatness effect after the first exhaust roller is rolled; at the same time, the expanded packaging bag may be wrinkled when rolled by the second exhaust roller, resulting in a reduction in the flatness of the packaging bag. Therefore, a device that can solve this problem is urgently needed. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a packaging bag edge sealing and rolling device. The utility model can quickly discharge the gas remaining in the packaging bag during the rolling process, and effectively prevent the packaging bag from expanding during the rolling and exhaust process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A packaging bag edge sealing and rolling device, comprising a two-layer film feeding component, and an edge sealing machine for pressing and sealing the edges of the two layers of film together to form a hollow packaging bag, and an exhaust component for exhausting the packaging bag and a winding component for packing the exhausted packaging bag into a roll are arranged in sequence downstream of the edge sealing machine;

[0007] The exhaust component includes a plurality of roller groups arranged in sequence along the conveying direction of the packaging bag, each roller group includes two rollers arranged side by side, a passage gap is formed between the two rollers for the packaging bag to pass through and to roll and exhaust the packaging bag, and an air guide groove is coaxially opened on the roller surface where the roller contacts the packaging bag.

[0008] As a further solution of the utility model: the air guide grooves on the same pressing roller are evenly arranged in sequence along the axial direction of the pressing roller.

[0009] As a further solution of the utility model: the air guide grooves on the two pressing rollers in the same pressing roller group are arranged opposite to each other in an upper and lower direction.

[0010] As a further solution of the utility model: the air guide grooves on the two pressing rollers in the same pressing roller group are arranged in a staggered manner with respect to each other.

[0011] As a further solution of the utility model: the exhaust assembly also includes a support frame for installing each pressure roller group, and each pressure roller is horizontally rotatably installed on the support frame.

[0012] As a further solution of the utility model: the feeding assembly comprises an upper film roll coaxially sleeved on a first unwinding shaft, the first unwinding shaft is horizontally rotatably mounted on a first unwinding bracket; a first unwinding motor driving the first unwinding shaft to rotate is mounted on the first unwinding bracket;

[0013] It also includes a lower film roll coaxially sleeved on a second unwinding shaft, the second unwinding shaft is horizontally rotatably mounted on a second unwinding bracket; the second unwinding bracket is equipped with a second unwinding motor that drives the second unwinding shaft to rotate.

[0014] As a further solution of the utility model: the reel assembly includes a reel shaft for coaxially sleeved packaging bag rolls, the reel shaft is horizontally rotatably mounted on a reel bracket; a reel motor for driving the reel shaft to rotate is mounted on the reel bracket.

[0015] As a further solution of the utility model: the first unwinding motor, the second unwinding motor, and the winding motor all drive the corresponding reels to rotate by belt transmission.

[0016] As a further solution of the utility model: two steering rollers for changing the conveying direction of the film are installed above and below at the entrance of the edge banding machine.

[0017] As a further solution of the utility model: a base for support is installed at the bottom of the edge banding machine.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model discloses that in the process of venting the packaging bag, the bag body of the packaging bag is respectively rolled and compacted by two adjacent pressure rollers, while the packaging bag at the air guide groove is not compacted, thereby forming an exhaust passage of suitable size in the packaging bag, ensuring that in the process of venting, the space in the packaging bag is connected to the atmospheric environment, and the exhaust is carried out in real time, so that the gas in the packaging bag is continuously discharged from the multiple exhaust passages in the direction of the incoming material of the packaging bag, thereby avoiding the expansion of the packaging bag in the process of venting and ensuring the flatness of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the pressure roller in the utility model.

[0022] In the figure: 1. feeding assembly; 11. upper film roll; 12. first unwinding shaft; 13. first unwinding motor; 14. first unwinding bracket; 15. lower film roll; 16. second unwinding shaft; 17. second unwinding motor; 18. second unwinding bracket; 2. edge banding machine; 21. steering roller; 22. base; 3. exhaust assembly; 31. pressure roller; 311. air guide groove; 32. support frame; 4. winding assembly; 41. packaging bag roll; 42. winding shaft; 43. winding motor; 44. winding bracket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-2 In an embodiment of the utility model, a packaging bag edge sealing and rolling device includes a two-layer film feeding component 1, an edge sealing machine 2, an exhaust component 3 and a winding component 4.

[0025] The feeding assembly 1 includes an upper film roll 11 coaxially sleeved on a first unwinding shaft 12. The first unwinding shaft 12 is horizontally rotatably mounted on a first unwinding bracket 14. A first unwinding motor 13 for driving the first unwinding shaft 12 to rotate is mounted on the first unwinding bracket 14, and the first unwinding motor 13 and the first unwinding shaft 12 are connected to each other through a transmission belt.

[0026] The feeding assembly 1 also includes a lower film roll 15 coaxially sleeved on the second unwinding shaft 16, the second unwinding shaft 16 is horizontally rotatably mounted on the second unwinding bracket 18, and the second unwinding motor 17 that drives the second unwinding shaft 16 to rotate is installed on the second unwinding bracket 18, and the second unwinding motor 17 and the second unwinding shaft 16 are connected to each other through a transmission belt.

[0027] The upper film roll 11 and the lower film roll 15 are arranged one above the other to facilitate simultaneous feeding.

[0028] The edge banding machine 2 is a commonly used machine for pressing and sealing the edges of the upper and lower films, and the machine is placed on a base 22. In order to facilitate the feeding of the film into the edge banding machine 2, two upper and lower steering rollers 21 for changing the film conveying direction are arranged at the entrance of the edge banding machine 2. The upper film enters the edge banding machine 2 under the action of the upper steering roller 21, and the lower film enters the edge banding machine 2 at the same time as the upper film under the action of the lower steering roller 21, and the edge banding work is completed in the edge banding machine 2.

[0029] The exhaust assembly 3 includes a plurality of roller groups arranged in sequence along the conveying direction of the packaging bag, each roller group includes two rollers 31 arranged side by side, a travel gap is formed between the two rollers 31 for the packaging bag to pass through and roll and exhaust the packaging bag, and a gas guide groove 311 is coaxially provided on the roller surface of the roller 31 that contacts the packaging bag. The gas guide grooves 311 on the same roller 31 are arranged uniformly in sequence along the axial direction of the roller 31. There are two ways to arrange the gas guide grooves 311 on the upper and lower rollers 31. One is that the gas guide grooves 311 on the two rollers 31 in the same roller group are arranged one by one relative to each other. This arrangement can increase the aperture of the exhaust channel of the packaging bag, increase the exhaust volume, and improve the exhaust speed. The other is that the gas guide grooves 311 on the two rollers 31 in the same roller group are staggered with each other. This arrangement can increase the number of exhaust channels, and can also increase the exhaust volume and improve the exhaust speed.

[0030] The winding assembly 4 includes a winding shaft 42 for coaxially sleeved packaging bag roll 41. The winding shaft 42 is horizontally rotatably mounted on a winding bracket 44. A winding motor 43 is mounted on the winding bracket 44 to drive the winding shaft 42 to rotate. The winding motor 43 and the winding shaft 42 are connected to each other through a transmission belt.

[0031] When in use, the film is first pulled out from the corresponding film roll, passed around the steering roller 21, and then sent to the edge banding machine 2 for edge banding. The packaging bag formed after the edge banding passes through the travel gap of each pressure roller group in turn, and then is wound on the winding shaft 42. During the winding process, the first unwinding motor 13, the second unwinding motor 17 and the winding motor 43 cooperate with each other so that the packaging bag and the film are always in a properly tightened state during the entire edge banding and winding process. During the exhaust process, the packaging bag is gradually wound around the packaging bag roll 41, and the air in the packaging bag wound around the packaging bag roll 41 needs to be completely exhausted. Under the rolling pressure of the packaging bag roll 41, the packaging bag wound around the packaging bag roll 41 squeezes the residual gas in the packaging bag toward the incoming direction of the packaging bag, and then the residual gas flows along each exhaust channel to the edge banding machine 2 and is exhausted at the entrance of the edge banding machine 2. During the exhaust process, the space inside the packaging bag is always connected to the atmospheric environment, and the exhaust is carried out in real time, so that the gas in the packaging bag is continuously discharged from multiple exhaust channels in the direction of the incoming material of the packaging bag, avoiding the expansion of the packaging bag during the exhaust process and ensuring the flatness of the packaging bag.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A packaging bag edge sealing and rolling device, characterized in that: The invention comprises a two-layer film feeding component (1), and an edge sealing machine (2) for pressing and sealing the edges of the two layers of film together to form a hollow packaging bag, and an exhaust component (3) for exhausting the packaging bag and a winding component (4) for packing the exhausted packaging bag into a roll are arranged in sequence downstream of the edge sealing machine (2); The exhaust assembly (3) comprises a plurality of groups of rollers arranged in sequence along the conveying direction of the packaging bag, each roller group comprises two rollers (31) arranged side by side, a passage gap is formed between the two rollers (31) for the packaging bag to pass through and for rolling and exhausting the packaging bag, and an air guide groove (311) is coaxially provided on the roller surface of the roller (31) in contact with the packaging bag.

2. The packaging bag edge sealing and rolling device according to claim 1, characterized in that: The air guide grooves (311) on the same pressing roller (31) are uniformly arranged in sequence along the axial direction of the pressing roller (31).

3. The packaging bag edge sealing and rolling device according to claim 2, characterized in that: The air guide grooves (311) on the two pressing rollers (31) in the same pressing roller group are arranged opposite to each other in an upper and lower direction.

4. The packaging bag edge sealing and rolling device according to claim 2, characterized in that: The air guide grooves (311) on the two pressing rollers (31) in the same pressing roller group are arranged in a staggered manner.

5. A packaging bag edge sealing and rolling device according to any one of claims 1 to 4, characterized in that: The exhaust assembly (3) further comprises a support frame (32) for mounting each pressure roller group, and each pressure roller (31) is mounted on the support frame (32) in a horizontally rotatable manner.

6. The packaging bag edge sealing and rolling device according to claim 5, characterized in that: The feeding assembly (1) comprises an upper film roll (11) coaxially sleeved on a first unwinding shaft (12); the first unwinding shaft (12) is horizontally rotatably mounted on a first unwinding bracket (14); a first unwinding motor (13) for driving the first unwinding shaft (12) to rotate is mounted on the first unwinding bracket (14); It also includes a lower film roll (15) coaxially sleeved on a second unwinding shaft (16); the second unwinding shaft (16) is horizontally rotatably mounted on a second unwinding bracket (18); and the second unwinding bracket (18) is equipped with a second unwinding motor (17) for driving the second unwinding shaft (16) to rotate.

7. The packaging bag edge sealing and rolling device according to claim 6, characterized in that: The reeling assembly (4) comprises a reeling shaft (42) for coaxially sleeved packaging bag roll (41); the reeling shaft (42) is horizontally rotatably mounted on a reeling bracket (44); and a reeling motor (43) for driving the reeling shaft (42) to rotate is mounted on the reeling bracket (44).

8. The packaging bag edge sealing and rolling device according to claim 7, characterized in that: The first unwinding motor (13), the second unwinding motor (17), and the winding motor (43) all drive the corresponding reels to rotate by means of belt transmission.

9. The packaging bag edge sealing and rolling device according to claim 8, characterized in that: Two steering rollers (21) for changing the conveying direction of the film are installed above and below the entrance of the edge banding machine (2).

10. The packaging bag edge sealing and rolling device according to claim 9, characterized in that: A base (22) for support is installed at the bottom of the edge banding machine (2).

Images