Air exhaust packing machine

Abstract

The utility model discloses an air exhaust packing machine which comprises a machine frame, a conveying device arranged at the bottom of the machine frame, an air exhaust device arranged on the machine frame and located above the conveying device and used for exhausting air from packing bags, and a heat sealing device matched with the air exhaust device and used for sealing bag openings of the packing bags. And a clamping device for clamping the packaging bag from two sides in the air exhaust process is also arranged on the rack below the air exhaust device. The clamping device used for clamping and fixing the two sides of the packaging bag is arranged below the air exhaust device, in the air exhaust and heat sealing process, the shape of the packaging bag and the shape of a small package in the packaging bag are effectively controlled, the clamped areas on the two sides of the packaging bag can be smoother, the formed package is in the overall flat appearance, and therefore the packaging bag is more stable in the stacking process, and the packaging efficiency is improved. And gaps between the adjacent packages are correspondingly reduced, so that the stacking space is saved, the space utilization rate is increased, and the space requirement in the storage and carrying process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, specifically an air-sealing machine for bulk bagging and air-sealing small parcels. Background Technology

[0002] With the rapid development of e-commerce, the express delivery industry, as a crucial link connecting online and offline channels, continues to maintain high-speed growth. Currently, express delivery companies need to handle a large number of small parcels every day, including soft-pack goods, mainly clothing, as well as boxed goods in cardboard boxes. Because e-commerce goods are typically large in volume and light in weight, they occupy a lot of space, resulting in higher transportation costs.

[0003] To reduce the space occupied by packages and lower transportation costs, some courier companies have adopted a technology of vacuum packaging. Using a large vacuum packing machine, multiple compressible packages of different sizes are placed into a large package, excess air is removed by vacuuming, and then the package is sealed to form a large package. This reduces the overall space occupied by the package and also provides some protection for smaller packages.

[0004] Existing vacuum packing machines, when vacuum packing large packages containing packages of different sizes, cannot achieve uniform shrinkage of the large packages after vacuuming due to the varying sizes and shapes of the smaller packages within them. This results in large gaps between the packages, especially on the sides, where bulging is common. This unevenness prevents the large packages from fitting together properly, hindering stacking stability and reducing stacking efficiency and safety. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vacuum packing machine that provides excellent stability when packing packages and can further save packing space.

[0006] The vacuum packaging machine of this utility model includes a frame, a conveying device at the bottom of the frame, a vacuuming device for vacuuming the packaging bag and a heat sealing device for sealing the opening of the packaging bag in conjunction with the vacuuming device above the conveying device on the frame, and a clamping device for holding the packaging bag from both sides during the vacuuming process below the vacuuming device on the frame.

[0007] The aforementioned vacuum packing machine has a clamping device below the vacuuming unit for clamping and fixing the two sides of the packaging bag. During the vacuuming and heat sealing process, the shape of the packaging bag and its inner small packages is effectively controlled, making the clamped areas on both sides of the packaging bag flatter. The resulting package has a relatively flat overall shape, which makes it more stable when stacked, and the gaps between adjacent packages are also reduced accordingly, saving stacking space. This not only improves space utilization but also reduces space requirements during storage and handling.

[0008] As a preferred embodiment of the present invention, the clamping device includes two clamping rows arranged opposite each other, and a clamping row driving mechanism that drives the two clamping rows to extend and retract relative to each other or move away from each other to clamp or open the packaging bag.

[0009] As a preferred embodiment of this utility model, the clamping drive mechanism is a pressure cylinder, one end of which is connected to the frame and the other end is connected to the clamping block.

[0010] In a preferred embodiment of this utility model, the pressure cylinder is a pneumatic cylinder or a hydraulic cylinder.

[0011] As a preferred embodiment of this utility model, the clamping bar includes multiple clamping rods arranged side by side and a connecting plate that connects the clamping rods into one unit, and the pressure cylinder is connected to the connecting plate.

[0012] As a preferred embodiment of this utility model, the connecting plate is also connected to one or more guide rods arranged parallel to the pressure cylinder, and the frame is provided with guide sleeves that cooperate with each guide rod, and the guide rods are inserted into the guide sleeves.

[0013] As a preferred embodiment of this utility model, the clamping drive mechanism includes a motor, a lead screw driven by the motor, and a lead screw nut connected to the clamping block.

[0014] As a preferred embodiment of this utility model, the clamping bar is connected to a swing arm, which is rotatably hinged to the frame.

[0015] In a preferred embodiment of this utility model, the swing arm is hinged to the frame via a rotating shaft, and a motor is connected to the rotating shaft to drive the rotating shaft to rotate.

[0016] As a preferred embodiment of this utility model, a slide rail is provided at the bottom of the frame, and a slider is provided at the bottom of the part of the frame on which the clamping device is installed, which moves in cooperation with the slide rail. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a vacuum packaging machine.

[0018] Figure 2 This is a schematic diagram of the clamping device.

[0019] Figure 3 This is a frontal schematic diagram of the clamping device.

[0020] Figure 4 This is a side view of the clamping device. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] If the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

[0025] like Figure 1-4As shown, a vacuum packaging machine includes a frame 1, a conveying device 2 at the bottom of the frame, a vacuuming device 3 for vacuuming the packaging bag above the conveying device on the frame, and a heat-sealing device 4 that works with the vacuuming device to seal the opening of the packaging bag. Below the vacuuming device, the frame also has a clamping device 5 for gripping the packaging bag from both sides during vacuuming. The clamping device below the vacuuming device for holding and fixing the sides of the packaging bag allows for effective control of the shape of the packaging bag and its inner packages during vacuuming and heat sealing. This results in a flatter area on both sides of the packaging bag, forming a relatively flat package. Consequently, it is more stable when stacked, and the gaps between adjacent packages are reduced, saving stacking space. This not only improves space utilization but also reduces space requirements during storage and handling.

[0026] The clamping device 5 includes two opposing clamping bars 6 and a clamping bar driving mechanism 7 that drives the two clamping bars to extend and retract relative to each other, thereby clamping or opening the packaging bag. The clamping bar driving mechanism 7 is a pressure cylinder, one end of which is connected to the frame and the other end to the clamping bar; further, the pressure cylinder is a pneumatic cylinder or a hydraulic cylinder. Using a pneumatic cylinder or a hydraulic cylinder as the driving force for clamping the packaging bag facilitates efficient, stable, and reliable clamping of the packaging bag.

[0027] The clamping rack 6 includes multiple clamping rods 601 arranged side by side and a connecting plate 602 connecting the clamping rods into one unit. The pressure cylinder is connected to the connecting plate and drives the connecting plate to move, thereby moving the entire clamping rack and ensuring that the process of clamping the packaging bag is both stable and reliable.

[0028] The connecting plate is also connected to one or more guide rods 603 arranged parallel to the pressure cylinder. Corresponding guide sleeves 604 are provided on the frame to cooperate with each guide rod, with the guide rods inserted into the guide sleeves. During the movement of the clamping block driven by the pressure cylinder, the guide rods and guide sleeves move synchronously, providing stable auxiliary support and guidance for the clamping block, thereby ensuring smoother operation of the clamping block.

[0029] In another preferred embodiment, the clamping drive mechanism includes a motor, a lead screw driven by the motor, and a lead screw nut connected to the clamp. By driving the lead screw to rotate, the lead screw nut moves back and forth along the lead screw axis, thereby achieving the telescopic movement of the clamp and accurately clamping packaging bags and parcels.

[0030] In another embodiment, the clamping bar is connected to a swing arm, which is rotatably hinged to the frame. Rotating the swing arm allows the clamping bar to swing, thereby clamping the packaging bag and parcel in the middle between the two side clamping bars. Furthermore, the swing arm is hinged to the frame via a rotating shaft, and a motor is connected to the rotating shaft to drive its rotation. Specifically, the rotating shaft can be directly connected to the motor shaft, or a gear connected to the motor shaft can engage with another gear mounted on the rotating shaft to drive its rotation.

[0031] The bottom of the frame is equipped with a slide rail 8, and the bottom of the part of the frame on which the clamping device is mounted is equipped with a slider 9 that moves in cooperation with the slide rail. By mounting the clamping device on a structure that can move along the slide rail, the position of the clamping device can be flexibly adjusted. This allows the clamping device to be adjusted according to different packaging bag sizes and shapes, as well as actual usage scenarios, improving the applicability of the clamping device, ensuring operational efficiency and clamping accuracy, and meeting diverse needs. Furthermore, a drive mechanism can be installed on the frame to drive the part on which the clamping device is mounted, allowing the clamping rack to automatically adjust its position as needed.

Claims

1. A vacuum packaging machine, comprising a frame (1), a conveying device (2) disposed at the bottom of the frame, a vacuuming device (3) disposed above the conveying device on the frame for vacuuming the packaging bag, and a heat sealing device (4) cooperating with the vacuuming device to seal the opening of the packaging bag, characterized in that, The frame is also equipped with a clamping device (5) below the air extraction device to hold the packaging bag from both sides during the air extraction process.

2. The vacuum packaging machine according to claim 1, characterized in that, The clamping device (5) includes two clamping rows (6) arranged opposite to each other, and a clamping row driving mechanism (7) that drives the two clamping rows to extend and retract relative to each other to clamp or open the packaging bag.

3. The vacuum packaging machine according to claim 2, characterized in that, The clamping drive mechanism (7) is a pressure cylinder, one end of which is connected to the frame and the other end is connected to the clamping mechanism.

4. The vacuum packaging machine according to claim 3, characterized in that, The pressure cylinder is either a pneumatic cylinder or a hydraulic cylinder.

5. The vacuum packaging machine according to claim 3, characterized in that, The clamping bar (6) includes multiple clamping rods (601) arranged side by side and a connecting plate (602) connecting the clamping rods into one unit. The pressure cylinder is connected to the connecting plate.

6. The vacuum baling machine according to claim 5, characterized in that, The connecting plate is also connected to one or more guide rods (603) that are parallel to the pressure cylinder, and the frame is provided with guide sleeves (604) that cooperate with each guide rod, and the guide rods are inserted into the guide sleeves.

7. The vacuum baling machine according to claim 2, characterized in that, The clamping drive mechanism includes a motor, a lead screw driven by the motor, and a lead screw nut connected to the clamp.

8. The vacuum packaging machine according to claim 2, characterized in that, The clamp is connected to a swing arm, which is rotatably hinged to the frame.

9. The vacuum packaging machine according to claim 8, characterized in that, The swing arm is hinged to the frame via a rotating shaft, and a motor is connected to the rotating shaft to drive the rotating shaft to rotate.

10. The vacuum packaging machine according to claim 1, characterized in that, The bottom of the frame is provided with a slide rail (8), and the bottom of the part of the frame on which the clamping device is installed is provided with a slider (9) that moves in cooperation with the slide rail.

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