A gas column bag forming device

Abstract

The utility model discloses a kind of air column bag forming devices, it is related to air column bag production technical field, to solve the problem of air column bag film heat sealing and easily deformed.Its technical scheme main point is: including rack, the rack is sequentially provided with unwinding drum, heat sealing mechanism, cooling mechanism and winding drum along film conveying direction, the cooling mechanism includes at least one cooling unit, the cooling unit includes upper cooling roller and lower cooling roller rotationally connected on rack, the upper cooling roller and lower cooling roller inside are all provided with cavity, and the upper cooling roller and lower cooling roller outer surface are coated with heat-conducting coating.The utility model makes the film that is heat sealed pass between upper cooling roller and lower cooling roller, can quickly absorb the heat of film by heat-conducting coating, upper cooling roller and lower cooling roller are connected with cooling medium circulation assembly by pipeline, so that film can be quickly cooled under the action of cooling medium, prevent its deformation.

Description

Technical Field

[0001] This utility model relates to the field of air column bag production technology, and more specifically, it relates to an air column bag forming device. Background Technology

[0002] In the field of packaging technology, air column cushioning bags are commonly used to package objects. When inflated, the bag-within-a-bag packaging reduces the shaking of the items. The excellent cushioning performance of air column cushioning bags effectively reduces the damage rate of items and has been widely used.

[0003] The air column bag needs to be formed by laminating two films together. After hot-pressing and sealing, and installing the air valve membrane, it can be formed. During the heat sealing process, the film melts and laminates after being heated by a high-temperature hot press plate. The formed air column bag needs to be cooled immediately. Traditional cooling methods mostly use natural cooling or simple air cooling, which have low cooling efficiency and insufficient temperature control precision. This can easily lead to wrinkles, deformation, or adhesion of the heat-sealed film due to untimely cooling, affecting the overall flatness of the air column bag and its pressure resistance after inflation.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air column bag forming device, which has the advantage of rapidly cooling the air column bag film to prevent deformation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an air column bag forming device, including a frame, on which an unwinding drum, a heat sealing mechanism, a cooling mechanism, and a take-up drum are sequentially arranged along the film conveying direction. The cooling mechanism includes at least one cooling unit, which includes an upper cooling roller and a lower cooling roller rotatably connected to the frame. The upper cooling roller is rotatably connected to the frame via a servo motor. Both the upper and lower cooling rollers have cavities inside, and their outer surfaces are coated with a thermally conductive coating. A film passes between the upper and lower cooling rollers, and a cooling medium circulation assembly is connected to the upper and lower cooling rollers via pipes.

[0007] The present invention is further configured such that: the cooling medium circulation assembly includes a cooling tank and a circulation pump; the cooling tank is placed inside the frame; the cooling tank contains a cooling medium; the input end of the circulation pump is connected to the cooling tank; and the output end is connected to a pipe through a connector; the connector is located at both ends of the upper and lower cooling rollers; and the pipe passes through the cavity.

[0008] The present invention is further configured such that a spiral guide groove is formed on the inner peripheral wall of the cavity, and the pipe is embedded in the guide groove.

[0009] The present invention is further configured such that: the connecting component includes connecting boxes disposed on both sides of the upper cooling roller and the lower cooling roller, the connecting boxes are fixedly connected to the frame, the connecting boxes have a receiving cavity, the two ends of the pipe are connected to the inside of the receiving cavity, the output end of the circulating pump is connected to the receiving cavity, and the upper cooling roller and the lower cooling roller are rotatably connected to the surface of the connecting box.

[0010] The present invention is further configured such that: the cooling medium circulation assembly is provided in two sets, and a correction mechanism for correcting the position of the thin film is provided between the two sets of cooling medium circulation assemblies, and the correction mechanism is mounted on the frame.

[0011] The present invention is further configured such that: the correction mechanism includes two swing plates and a limiting plate; through slots are provided on both sides of the frame; the swing plates are rotatably connected to the through slots by a reduction motor; and the limiting plate is detachably connected to the frame by bolts. The limiting plate is used to limit the maximum swing amplitude of the swing plates.

[0012] The present invention is further configured such that a buffer block is fixedly connected to the side of the limiting plate near the swing plate.

[0013] In summary, this utility model has the following beneficial effects:

[0014] The heat-sealed film passes between the upper and lower cooling rollers. The heat is quickly absorbed by the thermally conductive coating. The upper and lower cooling rollers are connected by a cooling medium circulation assembly through a pipe. The pipe passes through the cavity, and the outer wall of the pipe is embedded in a spiral guide groove. This ensures that the cooling medium maintains a spiral flow path as the pipe rotates with the upper and lower cooling rollers, resulting in a wider coverage area and improved cooling efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 A cross-sectional view of this utility model Figure 1 ;

[0017] Figure 3 A cross-sectional view of this utility model Figure 2 .

[0018] In the diagram: 1. Frame; 2. Unwinding drum; 3. Rewinding drum; 4. Upper cooling roller; 5. Lower cooling roller; 6. Cavity; 7. Pipe; 8. Cooling box; 9. Circulating pump; 10. Guide channel; 11. Connecting box; 12. Receiving cavity; 13. Swing plate; 14. Through slot; 15. Gear motor; 16. Limiting plate; 17. Buffer block. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] An air column bag forming device, such as Figures 1-3 As shown, the system includes a frame 1, on which, along the film conveying direction, are sequentially arranged an unwinding drum 2, a heat sealing mechanism, a cooling mechanism, and a take-up drum 3. There are two unwinding drums 2, on which the film is wound and guided by a conveyor belt into the heat sealing mechanism. The heat sealing mechanism includes a horizontally positioned cylinder and a heat sealing block. The cylinder is fixed above the frame 1, and its piston rod is connected downwards to the heat sealing block. The bottom surface of the heat sealing block is equipped with an electric heating element, which can perform heat-press sealing on the contact area of ​​the two film layers.

[0023] In one embodiment, the cooling mechanism is located behind the heat-sealing mechanism and includes at least one cooling unit. Each cooling unit has an upper cooling roller 4 and a lower cooling roller 5 arranged parallel to each other and rotatably connected to the frame 1 via a servo motor. The upper cooling roller 4 and lower cooling roller 5 have cylindrical cavities 6 extending through both ends, and their outer surfaces are coated with an alumina thermally conductive coating. A channel is formed between them for the film to pass through. The heat-sealed film passes between the upper cooling roller 4 and lower cooling roller 5, and the thermally conductive coating allows for rapid absorption of heat from the film. The upper cooling roller 4 and lower cooling roller 5 are connected to a cooling medium circulation assembly via a pipe 7. The pipe 7 passes through the cavity 6, and its outer wall is embedded in a spiral guide groove 10 on the inner circumferential wall of the cavity 6. This ensures that the pipe 7 maintains a spiral flow path for the cooling medium as it rotates with the upper cooling roller 4 and lower cooling roller 5, resulting in a wider coverage area and improved cooling efficiency.

[0024] In one embodiment, the cooling medium circulation assembly includes a cooling tank 8 containing an aqueous ethylene glycol solution as the cooling medium, fixed inside the frame 1. A circulation pump 9 is mounted on the top surface of the cooling tank 8, with its input end connected to the interior of the cooling tank 8 via a flexible hose. The hose is a rigid metal pipe, and its output end is connected to a connector via a rigid metal pipe. The connector includes a connecting box 11 located on both sides of the upper cooling roller 4 and the lower cooling roller 5. The connecting box 11 is fixedly connected to the frame 1, and a receiving cavity 12 is formed inside the connecting box 11. Both ends of the pipe 7 are connected to the interior of the receiving cavity 12. The output end of the circulation pump 9 is connected to the receiving cavity 12. The upper cooling roller 4 and the lower cooling roller 5 are rotatably connected to the surface of the connecting box 11. A connecting plate is rotatably connected to the connecting box 11, and the upper cooling roller 4 and the lower cooling roller 5 are rotatably connected to the connecting plate. The circulation pump 9 inputs the cooling medium into the receiving cavity 12, thereby ensuring that the cooling medium enters the pipe 7 through the connecting box 11, flows along the spiral guide groove 10 through the cavity 6, and then flows back to the cooling tank 8.

[0025] Furthermore, a correction mechanism is provided between the two sets of cooling medium circulation components. Horizontal through slots 14 are formed on both side walls of the frame 1, and a swing plate 13 is mounted within these slots via a reduction motor 15. The reduction motor 15 is fixed to the top of the frame 1, and its output shaft passes through the through slots 14 and connects to the top of the swing plate 13, allowing the swing plate 13 to swing left and right around the output shaft. A limiting plate 16 is horizontally fixed to the front of the frame 1 with bolts, located on the side of the swing plate 13. A rubber buffer block 17 is attached to the side of the limiting plate 16 closest to the swing plate 13. When the swing plate 13 swings to its limit position, it contacts the buffer block 17, limiting the maximum swing amplitude and preventing excessive film displacement. The position of the limiting plate 16 can be adjusted according to actual needs by removing and removing the mounting bolts.

[0026] The method of using this utility model is as follows:

[0027] After being sealed by the heat-sealing mechanism, the film enters the cooling unit. The upper cooling roller 4 and the lower cooling roller 5 quickly absorb the heat from the film through the thermally conductive coating. The cooling medium, under the action of the circulating pump 9, flows along the pipe 7 to carry away the heat, achieving efficient cooling and shaping of the film. When the film deviates, the geared motor 15 drives the swing plate 13 to swing. The change in the included angle between the two swing plates 13 applies a lateral force to the film. Combined with the buffer limit of the limiting plate 16, the film position is dynamically corrected, ensuring the neat winding of the subsequent take-up drum 3.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An air column bag forming device, comprising a frame (1), wherein an unwinding drum (2), a heat sealing mechanism, a cooling mechanism, and a take-up drum (3) are sequentially arranged on the frame (1) along the film conveying direction, characterized in that: The cooling mechanism includes at least one cooling unit, which includes an upper cooling roller (4) and a lower cooling roller (5) rotatably connected to a frame (1). The upper cooling roller (4) is rotatably connected to the frame (1) via a servo motor. Both the upper cooling roller (4) and the lower cooling roller (5) have cavities (6) inside. The outer surfaces of the upper cooling roller (4) and the lower cooling roller (5) are coated with a thermally conductive coating. A thin film passes between the upper cooling roller (4) and the lower cooling roller (5). The upper cooling roller (4) and the lower cooling roller (5) are connected to a cooling medium circulation assembly via a pipe (7).

2. The air column bag forming device according to claim 1, characterized in that: The cooling medium circulation assembly includes a cooling tank (8) and a circulation pump (9). The cooling tank (8) is placed inside the frame (1). The cooling tank (8) contains a cooling medium. The input end of the circulation pump (9) is connected to the cooling tank (8), and the output end is connected to the pipe (7) through a connector. The connector is located at both ends of the upper cooling roller (4) and the lower cooling roller (5). The pipe (7) passes through the cavity (6).

3. The air column bag forming device according to claim 1, characterized in that: The cavity (6) has a spiral guide groove (10) on its inner peripheral wall, and the pipe (7) is embedded in the guide groove (10).

4. The air column bag forming device according to claim 2, characterized in that: The connector includes a connecting box (11) disposed on both sides of the upper cooling roller (4) and the lower cooling roller (5). The connecting box (11) is fixedly connected to the frame (1). A receiving cavity (12) is opened inside the connecting box (11). The two ends of the pipe (7) are connected to the inside of the receiving cavity (12). The output end of the circulating pump (9) is connected to the receiving cavity (12). The upper cooling roller (4) and the lower cooling roller (5) are rotatably connected to the surface of the connecting box (11).

5. The air column bag forming device according to claim 2, characterized in that: The cooling medium circulation assembly is provided in two sets, and a correction mechanism for correcting the position of the film is provided between the two sets of cooling medium circulation assemblies. The correction mechanism is installed on the frame (1).

6. The air column bag forming device according to claim 5, characterized in that: The correction mechanism includes two swing plates (13) and a limiting plate (16). The frame (1) has through slots (14) on both sides. The swing plates (13) are rotatably connected to the through slots (14) by a reduction motor (15). The limiting plate (16) is detachably connected to the frame (1) by bolts. The limiting plate (16) is used to limit the maximum swing amplitude of the swing plates (13).

7. The air column bag forming device according to claim 6, characterized in that: A buffer block (17) is fixedly connected to the side of the limiting plate (16) near the swing plate (13).

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