An air extraction device for a packaging machine and a packaging machine adapted to the air extraction device of the packaging machine

Abstract

The present invention discloses an air extraction device for a packaging machine, which is connected to the packaging machine. The air extraction device for the packaging machine includes an air extraction mechanism and a sealing and clamping mechanism. The packaging machine is provided with a transverse sealing clamp and a transverse sealing clamp frame for fixing the transverse sealing clamp. The sealing and clamping mechanism includes a column, a first sealing installation component and a second sealing installation component arranged adjacent to the first sealing installation component. The first sealing installation component includes a first support plate, a first sealing plate and a first sealing driving device. The first support plate is connected to the transverse sealing clamp frame. The present invention solves the technical problems that the air extraction device occupies a large space, has a small exhaust volume and cannot actively and continuously extract air.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging machines, and particularly to an air extraction device for a packaging machine and a packaging machine adapted to the air extraction device of the packaging machine. Background Art

[0002] In the domestic and foreign packaging markets, vertical bag forming - filling - sealing machines are one of the most widely used and largest - batch models in packaging machinery. Their characteristics are that the materials to be packaged pass through the forming cylinder, and bag making and material filling are carried out vertically from top to bottom; the packaging material wraps around the outer surface of the former and is gradually rolled into a tube shape from top to bottom. After being heat - sealed by a longitudinal heat sealer, a sealed tube is obtained, and then it is moved to the lower - part transverse heat sealer for transverse sealing.

[0003] Currently, most automatic packaging equipment has limitations in the air extraction of the packaging machinery supporting it due to reasons such as insufficient space, small size of the forming tube, high precision requirements for the forming tube, and occupied space, resulting in air extraction being limited to the exhaust type. The exhaust - type air extraction method is to install exhaust plates at both the upper and lower ends of the transverse sealing pliers to achieve exhaust. Therefore, the active air extraction effect cannot be achieved, and the exhaust volume is small, not meeting the requirements of high exhaust volume. Summary of the Invention

[0004] The purpose of the present invention is to provide an air extraction device for a packaging machine and a packaging machine adapted to the air extraction device of the packaging machine, so as to solve the technical problems of large occupied space, small exhaust volume, and inability to actively and continuously extract air of the air extraction device.

[0005] To solve the above - mentioned technical problems, the present invention provides an air extraction device for a packaging machine, which is connected to the packaging machine. The air extraction device for the packaging machine includes an air extraction mechanism and a sealing and clamping mechanism. The packaging machine is provided with a transverse sealing plier and a transverse sealing plier frame for fixing the transverse sealing plier. The sealing and clamping mechanism includes a column, a first sealing installation component, and a second sealing installation component arranged adjacent to the first sealing installation component. The transverse sealing plier is located in the space between the first sealing installation component and the second sealing installation component. The first sealing installation component includes a first support plate, a first sealing plate, and a first sealing driving device. The first support plate is connected to the transverse sealing plier frame. Both the first sealing plate and the first sealing driving device are connected to the first support plate. The first sealing driving device is used to drive the first sealing plate to achieve clamping and separation; the second sealing installation component includes a second support plate, a second sealing plate, and a second sealing driving device. The second support plate is connected to the first support plate through the column. Both the second sealing plate and the second sealing driving device are connected to the second support plate. The second sealing driving device is used to drive the second sealing plate to achieve clamping and separation; the air extraction mechanism includes an air extraction driving component and an air extraction air pipe arranged on one side of the first sealing plate. The air extraction driving component can drive the air extraction air pipe to move to a position on the other side of the first sealing plate for air extraction.

[0006] Further, the air extraction air pipe includes a first pipe and a second pipe. One end of the second pipe is connected to the end of the first pipe, and the end of the second pipe away from the first pipe is a flat nozzle air pipe.

[0007] Further, the first sealing plate includes a clamping surface and a fixing surface. The first driving device is connected to the fixing surface, and the first driving device is used to drive the first sealing plate so that the clamping surface realizes clamping.

[0008] Further, the clamping surface includes an elastic layer, and the elastic layer undergoes elastic deformation when the clamping surface realizes clamping.

[0009] Further, at least two columns are provided. One end of the column is connected to the first support plate, and the other end of the column is connected to the second support plate.

[0010] Further, the air extraction driving assembly is further used to control the air extraction air pipe to move back and forth on both sides of the second sealing plate.

[0011] An embodiment of the present invention further provides a packaging machine adapted to the air extraction device of the packaging machine, including a forming tube, an air extraction driving assembly clamping plate, and the air extraction device of the packaging machine as described in any one of the above. The air extraction driving assembly clamping plate is arranged above the forming tube.

[0012] The air extraction driving assembly clamping plate is used to fix the air extraction driving assembly, and the air extraction air pipe penetrates through the inside of the forming tube and extends out from the end of the forming tube.

[0013] Further, two air extraction air pipes are provided, and the two air extraction air pipes are symmetrically arranged along the axis of the forming tube.

[0014] Further, the packaging machine further includes a spreader arranged at the end of the forming tube. Two spreaders are provided, and the horizontal connection line of the two spreaders coincides with the horizontal connection line of the two air extraction air pipes.

[0015] Further, the packaging machine further includes an air pipe fixing plate fixed to the air extraction air pipe, and the two air extraction air pipes pass through the air pipe fixing plate.

[0016] Implementing the present invention has the following beneficial effects:

[0017] By connecting the first support plate to the transverse sealing pliers frame, connecting the second support plate to the first support plate through the column, and placing the transverse sealing pliers in the space between the first sealing installation assembly and the second sealing installation assembly, the installation space of the sealing clamping mechanism is reduced. The first sealing driving device is used to drive the first sealing plate to achieve clamping and separation; the second sealing driving device is used to drive the second sealing plate to achieve clamping and separation; the air extraction driving assembly can drive the air extraction air pipe to move to a position on the other side of the first sealing plate for air extraction, with a large air extraction volume and improved air extraction efficiency, realizing active continuous air extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 FIG. 9 is an isometric schematic view of the assembly of the air extraction device of the packaging machine and the packaging machine provided by the embodiment of the present invention.

[0020] Figure 2 FIG. 13 is a front view schematic view of the assembly of the air extraction device of the packaging machine and the packaging machine provided by the embodiment of the present invention.

[0021] Figure 3 FIG. 17 is a left view schematic view of the working state of the air extraction device of the packaging machine and the packaging machine provided by the embodiment of the present invention.

[0022] Among them, the reference numerals in the figure correspond to: 11 - transverse sealing pliers, 12 - transverse sealing pliers frame, 13 - forming tube, 20 - air extraction mechanism, 21 - air extraction driving assembly, 22 - air extraction air pipe, 221 - first pipe, 222 - second pipe, 23 - air extraction driving assembly clamping plate, 24 - spreader, 25 - air pipe fixing plate, 30 - sealing clamping mechanism, 31 - column, 32 - first sealing installation assembly, 321 - first support plate, 322 - first sealing plate, 3221 - clamping surface, 32211 - elastic layer, 3222 - fixing surface, 323 - first sealing driving device (first driving device), 33 - second sealing installation assembly, 331 - second support plate, 332 - second sealing plate, 333 - second sealing driving device, 40 - bag film, 41 - finished bag. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0024] In the following description, for the sake of clarity and conciseness, not all the multiple components shown in the drawings are described. The multiple components shown in the drawings provide a complete disclosure that can be implemented by those of ordinary skill in the art for the present invention. For those skilled in the art, the operation of many components is familiar and obvious.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width",

[0026] "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. The features defined by "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0028] In this embodiment, a gas extraction device for a packaging machine is provided. As Figure 1 shown, it is connected to the packaging machine. The gas extraction device for the packaging machine includes a gas extraction mechanism 20 and a sealing and clamping mechanism 30. The gas extraction mechanism 20 can be used to extract gas after the opening of the packaging bag filled with materials is clamped by the sealing and clamping mechanism 30, and withdraw from the inside of the packaging bag after the gas extraction is completed so as not to affect the sealing of the packaging bag.

[0029] In this embodiment, as Figure 1As shown, the packaging machine is provided with a transverse sealing clamp 11 and a transverse sealing clamp frame 12 for fixing the transverse sealing clamp 11. The sealing and clamping mechanism 30 includes a column 31, a first sealing installation assembly 32 and a second sealing installation assembly 33 arranged adjacent to the first sealing installation assembly 32. The transverse sealing clamp 11 is located in the space between the first sealing installation assembly 32 and the second sealing installation assembly 33. The first sealing installation assembly 32 includes a first support plate 321, a first sealing plate 322 and a first sealing driving device 323 (the first sealing driving device is the first driving device). The first support plate 321 is connected to the transverse sealing clamp frame 12. The connection between the first support plate 321 and the transverse sealing clamp frame 12 can be a detachable connection or a non-detachable connection, and the present invention does not limit this. The first sealing plate 322 and the first sealing driving device 323 are both connected to the first support plate 321. The first sealing driving device 323 is used to drive the first sealing plate 322 to achieve clamping and separation. When the connection between the first support plate 321 and the transverse sealing clamp frame 12 is a detachable connection, the relative position between the first support plate 321 and the transverse sealing clamp frame 12 can be fixed or adjustable. Specifically, in the setting where the relative position between the first support plate 321 and the transverse sealing clamp frame 12 is adjustable, a slide rail can be provided on the surface of the transverse sealing clamp frame 12, and a pulley can be provided at the part where the first support plate 321 is connected to the transverse sealing clamp frame 12. The pulley can drive the first support plate 321 to slide along the slide rail to adjust the position. The pulley is provided with a self-locking device. By opening the self-locking device, the adjustment of the position of the first support plate 321 relative to the transverse sealing clamp frame 12 can be realized. By locking the self-locking device, the fixation of the position of the first support plate 321 relative to the transverse sealing clamp frame 12 is realized. In actual use, during air extraction, the position of the first sealing installation assembly 32 relative to the air extraction mechanism 20 can be adjusted by sliding the pulley so that the position can meet the position requirements for air extraction of the air extraction mechanism 20. When sealing the packaging bag after air extraction, the position of the first sealing plate 322 for clamping the packaging bag relative to the transverse sealing clamp frame 12 can be adjusted by sliding the pulley so that the position of the first sealing plate 322 for clamping the packaging bag relative to the pre-sealing position of the transverse sealing clamp 11 changes. Since after air extraction and before sealing, the first sealing plate 322 still fixes the opening of the packaging bag to keep the opening clamped and sealed, the clamping position of the first sealing plate 322 on the opening of the packaging bag remains unchanged. Therefore, by adjusting the position of the first sealing plate 322 for clamping the packaging bag relative to the pre-sealing position of the transverse sealing clamp 11, the change in the pre-sealing position of the transverse sealing clamp 11 relative to the packaging bag is realized. Therefore, the adjustment of the actual sealing position after the packaging bag is sealed is realized, which is convenient to adjust the actual sealing position of the packaging bag according to actual production needs and improves the applicability of the device.

[0030] In an embodiment of the present invention, as Figure 1 shown, the second sealing and mounting assembly 33 includes a second support plate 331, a second sealing plate 332, and a second sealing driving device 333. The second support plate 331 is connected to the first support plate 321 through the column 31. Specifically, both ends of the column 31 can be connected to the second support plate 331 and the first support plate 321 by welding, by riveting, or by screwing. The present invention does not limit this.

[0031] In an embodiment of the present invention, as Figure 1 shown, both the second sealing plate 332 and the second sealing driving device 333 are connected to the second support plate 331. The second sealing driving device 333 is used to drive the second sealing plate 332 to achieve clamping and separation; the structures of the first support plate 321 and the second support plate 331 may be the same or different. An opening is provided in the middle of the first support plate 321 to meet the requirements of the air extraction device inserting into the packaging bag for air extraction and the packaging bag sealing, or

[0032] the above requirements may be achieved by other means. The present invention does not limit this.

[0033] In an embodiment of the present invention, as Figure 1 shown, the air extraction mechanism 20 includes an air extraction driving assembly 21 and an air extraction air pipe 22 provided on one side of the first sealing plate 322. The air extraction driving assembly 21 can drive the air extraction air pipe 22 to move to a position on the other side of the first sealing plate 322 for air extraction. When the first sealing driving device 323 drives the first sealing plate 322 to separate, the air extraction driving assembly 21 drives the air extraction air pipe 22 to insert into the interior of the packaging bag through the gap of the first sealing plate 322 for air extraction. After the air extraction is completed, the air extraction driving assembly 21 drives the air extraction air pipe 22 to be pulled out of the interior of the packaging bag and separated from the first sealing plate 322. Thus, the air extraction of the packaging bag is realized.

[0034] In an embodiment of the present invention, as Figure 1 and Figure 2As shown, the air extraction air pipe 22 includes a first pipe 221 and a second pipe 222. One end of the second pipe 222 is connected to the end of the first pipe 221, and the end of the second pipe 222 away from the first pipe 221 is a flat nozzle air pipe. Since the opening thickness of the flat nozzle air pipe is small, the sealing effect after the end of the second pipe 222 inserted into the packaging bag is pulled out is ensured, air leakage is reduced, and at the same time, the flatness of the packaging bag after being sealed is ensured after the end of the second pipe 222 inserted into the packaging bag is pulled out, avoiding the wrinkling phenomenon at the sealing part after sealing and the appearance of defective products caused by the pipes with other cross-sectional shapes being pulled out of the packaging bag.

[0035] In an embodiment of the present invention, as Figure 1 shown, the first sealing plate 322 includes a clamping surface 3221 and a fixing surface 3222. The first driving device is connected to the fixing surface 3222, and the first driving device is used to drive the first sealing plate 322 so that the clamping surface 3221 realizes clamping.

[0036] In an embodiment of the present invention, the clamping surface 3221 includes an elastic layer 32211, and the elastic layer 32211 undergoes elastic deformation when the clamping surface 3221 realizes clamping. Specifically, the material of the elastic layer 32211 is sponge. The elastic layer 32211 can also be other materials that can undergo elastic deformation, and the present invention does not limit this.

[0037] In an embodiment of the present invention, at least two columns 31 are provided. One end of the column 31 is connected to the first support plate 321, and the other end of the column 31 is connected to the second support plate 331, increasing the connection stability between the first support plate 321 and the second support plate 331.

[0038] In an embodiment of the present invention, the air extraction driving assembly 21 is further used to control the air extraction air pipe 22 to move back and forth on both sides of the second sealing plate 332. The air extraction air pipe 22 can be inserted into the packaging bag on the side of the second sealing plate 332 away from the first sealing plate 322, so that the air extraction air pipe 22 is inserted near the bottom of the packaging bag for air extraction, improving the air extraction efficiency.

[0039] An embodiment of the present invention also provides a packaging machine adapted to the air extraction device of the packaging machine, as Figure 1As shown, it includes a forming tube 13, an air extraction drive assembly clamping plate 23, and the air extraction device of the packaging machine as described in any of the above. The air extraction drive assembly clamping plate 23 is disposed above the forming tube 13. Specifically, the air extraction drive assembly clamping plate 23 is sleeved on the outer surface of the forming tube 13. The air extraction drive assembly clamping plate 23 is used to fix the air extraction drive assembly 21. The air extraction air pipe 22 penetrates through the inside of the forming tube 13 and extends outward from the end of the forming tube 13. The specific structure of the air extraction device of the packaging machine is as described above, and will not be elaborated here

[0040] No further description will be given.

[0041] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, there are two air extraction air pipes 22. The two air extraction air pipes 22 are symmetrically arranged along the axis of the forming tube 13, improving the stability of the air extraction mechanism 20.

[0042] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the packaging machine further includes a spreader 24 disposed at the end of the forming tube 13. There are two spreaders 24. The horizontal connection line of the two spreaders 24 coincides with the horizontal connection line of the two air extraction air pipes 22. After the spreader 24 spreads the packaging bag, it is convenient for the two air extraction air pipes 22 to enter the packaging bag for air extraction.

[0043] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the packaging machine further includes an air pipe fixing plate 25 fixed to the air extraction air pipe 22. The two air extraction air pipes 22 pass through the air pipe fixing plate 25, avoiding the vibration of the air extraction air pipes 22 caused by the suction of gas during the air extraction process and improving the stability of the overall structure.

[0044] In an embodiment of the present invention, as Figure 3As shown, a bag film 40 is provided on the forming tube of the packaging machine. The first sealing driving device 323 drives the first sealing plate 322 to achieve separation; the second sealing driving device 333 drives the second sealing plate 332 to achieve separation; the second pipe 222 of the air extraction pipe 22, which is a flat nozzle pipe, passes through the gap between the first sealing plates 322 and the gap between the second sealing plates 332 and is inserted into the interior of the finished bag 41. The first sealing driving device 323 drives the first sealing plate 322 to achieve clamping; the second sealing driving device 333 drives the second sealing plate 332 to achieve clamping; the air extraction driving assembly 21 drives the air extraction pipe 22 to extract air. After the air extraction is completed, the air extraction driving assembly 21 drives the air extraction pipe 22 to be pulled out of the interior of the finished bag 41 and separated from the first sealing plate 322, thereby realizing the air extraction of the finished bag 41. After the air extraction is completed, the cross-sealing pliers 11 seal the finished bag 41.

[0045] In the present invention, by connecting the first support plate to the cross-sealing pliers frame, connecting the second support plate to the first support plate through the column, and placing the cross-sealing pliers in the space between the first sealing installation assembly and the second sealing installation assembly, the installation space of the sealing clamping mechanism is reduced. The air extraction pipe 22 passes through the interior of the forming tube 13 and extends outward from the end of the forming tube 13, saving the layout space of the air extraction pipe 22; two air extraction pipes 22 are provided, improving the air extraction efficiency; the first sealing driving device is used to drive the first sealing plate to achieve clamping and separation; the second sealing driving device is used to drive the second sealing plate to achieve clamping and separation; the air extraction driving assembly can drive the air extraction pipe to move to a position on the other side of the first sealing plate for air extraction, with a large exhaust volume and improved air extraction efficiency, realizing active continuous air extraction.

[0046] The few preferred embodiments disclosed above are of course not intended to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An air extraction device for a packaging machine, connected to the packaging machine, characterized in that, The air extraction device of the packaging machine includes an air extraction mechanism (20) and a sealing and clamping mechanism (30). The packaging machine is provided with a transverse sealing clamp (11) and a transverse sealing clamp frame (12) for fixing the transverse sealing clamp (11). The sealing and clamping mechanism (30) includes a column (31), a first sealing and mounting assembly (32), and a second sealing and mounting assembly (33) arranged adjacent to the first sealing and mounting assembly (32). The transverse sealing clamp (11) is located in the space between the first sealing and mounting assembly (32) and the second sealing and mounting assembly (33). The first sealing and mounting assembly (32) includes a first support plate (321), a first sealing plate (322), and a first driving device. The first support plate (321) is connected to the transverse sealing clamp frame (12), and both the first sealing plate (322) and the first driving device are connected to the first support plate (321). The first driving device is used to drive the first sealing plate (322) to achieve clamping and separation. The second sealing and mounting assembly (33) includes a second support plate (331), a second sealing plate (332), and a second sealing driving device (333). The second support plate (331) is connected to the first support plate (321) through the column (31). Both the second sealing plate (332) and the second sealing driving device (333) are connected to the second support plate (331). The second sealing driving device (333) is used to drive the second sealing plate (332) to achieve clamping and separation. The air extraction mechanism (20) includes an air extraction driving component (21) and an air extraction air pipe (22) arranged on one side of the first sealing plate (322). The air extraction driving component (21) can drive the air extraction air pipe (22) to move to a position on the other side of the first sealing plate (322) for air extraction. There are at least two columns (31). One end of the column (31) is connected to the first support plate (321), and the other end of the column (31) is connected to the second support plate (331). The air extraction air pipe (22) includes a first pipe (221) and a second pipe (222). One end of the second pipe (222) is connected to the end of the first pipe (221), and the end of the second pipe (222) away from the first pipe (221) is a flat nozzle air pipe. The packaging machine includes a forming tube (13). The air extraction air pipe (22) penetrates through the inside of the forming tube (13) and extends outward from the end of the forming tube (13). A slide rail is arranged on the surface of the transverse sealing clamp frame (12). A pulley is arranged at the part where the first support plate (321) is connected to the transverse sealing clamp frame (12). The pulley is provided with a self-locking device. The pulley is used to drive the first support plate (321) to slide along the slide rail to adjust the position, and the self-locking device is used to adjust or fix the position of the first support plate (321) relative to the transverse sealing clamp frame (12).

2. The air extraction device of a packaging machine according to claim 1, characterized in that, The first sealing plate (322) includes a clamping surface (3221) and a fixing surface (3222). The first driving device is connected to the fixing surface (3222), and the first driving device is configured to drive the first sealing plate (322) so that the clamping surface (3221) achieves clamping.

3. The air extraction device of a packaging machine according to claim 2, characterized in that, The clamping surface (3221) includes an elastic layer (32211), and the elastic layer (32211) undergoes elastic deformation when the clamping surface (3221) achieves clamping.

4. A gas extraction device for a packaging machine according to claim 1, characterized in that, The air extraction driving assembly (21) is further configured to control the air extraction air pipe (22) to move back and forth on both sides of the second sealing plate (332).

5. A packaging machine adapted to a suction device of a packaging machine, characterized in that, It includes a forming pipe (13), an air extraction driving assembly clamping plate (23), and the packaging machine air extraction device according to any one of claims 1-4. The air extraction driving assembly clamping plate (23) is disposed above the forming pipe (13), and the air extraction driving assembly clamping plate (23) is used to fix the air extraction driving assembly (21).

6. A packaging machine adapted to the air extraction device of a packaging machine according to claim 5, characterized in that, There are two air extraction air pipes (22), and the two air extraction air pipes (22) are symmetrically arranged along the axis of the forming pipe (13).

7. A packaging machine adapted to the air extraction device of the packaging machine according to claim 6, characterized in that, The packaging machine further includes a spreader (24) disposed at the end of the forming pipe (13). There are two spreaders (24), and the horizontal connection line of the two spreaders (24) coincides with the horizontal connection line of the two air extraction air pipes (22).

8. A packaging machine adapted to the air extraction device of a packaging machine according to claim 7, characterized in that, The packaging machine further includes an air pipe fixing plate (25) fixed to the air extraction air pipe (22), and the two air extraction air pipes (22) pass through the air pipe fixing plate (25).

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