A vacuum packaging machine air extraction sealing device

Abstract

The utility model discloses a kind of vacuum packaging machine air extraction sealing devices in the field of vacuum equipment, including the butt joint in vacuum packaging machine's link frame, the link frame is detachably fixed connection by bolt with vacuum packaging machine, upper feeding roller and lower feeding roller are rotationally arranged in the inside of link frame, the both sides of upper feeding roller and lower feeding roller are fixedly connected with mounting shaft, mounting shaft is rotationally penetrated connection with link frame, one side of link frame is fixedly connected with motor, the power end of motor is fixedly connected with the outside end of mounting shaft on the side of lower feeding roller, the outside end of mounting shaft on the other side of upper feeding roller and lower feeding roller is all fixedly sleeved with gear meshing with each other, the utility model is synchronous to smooth bag mouth fold in conveying process, without manual arrangement, both improve operation efficiency, and avoid the difference of flatness caused by manual operation, provide the flat bag mouth foundation for subsequent sealing, effectively reduce air leakage problem.

Description

Technical Field

[0001] This utility model relates to the field of vacuum equipment, and more specifically, to a vacuum packaging machine vacuum sealing device. Background Technology

[0002] The core workflow of existing vacuum packaging machines when performing vacuum sealing operations on packaging bags is as follows: the operator first needs to put the items to be packaged into the packaging bag, then manually straighten the bag opening to a flat and wrinkle-free state, and accurately place it into the sealing station of the vacuum packaging machine. Finally, the vacuum packaging machine body is started, and the equipment automatically completes the vacuuming and heat sealing operations.

[0003] However, this operating method has obvious drawbacks: First, manually adjusting the bag opening is not only inefficient, but also prone to uneven force and deviations, resulting in wrinkles at the bag opening and subsequent poor sealing during heat sealing, leading to air leakage. Second, the feeding or clamping structure of existing equipment has a fixed spacing, which cannot adapt to packaging bags of different thicknesses. If the packaging bag is thick, it is easily damaged by clamping; if the packaging bag is thin, it cannot be effectively clamped flat, affecting the stability of the conveying. Third, there is a lack of a limiting and guiding structure for the width of the packaging bag. The packaging bag is prone to lateral displacement during the process of entering the sealing station, causing the sealing position to deviate from the preset trajectory, further reducing the sealing quality, increasing the defect rate, and making it difficult to meet the needs of batch and high-efficiency packaging. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum packaging machine air extraction and sealing device that simultaneously smooths out bag opening wrinkles during the conveying process, eliminating the need for manual adjustment. This not only improves work efficiency but also avoids unevenness caused by manual operation, providing a smooth bag opening foundation for subsequent sealing and effectively reducing air leakage problems.

[0005] A vacuum packaging machine vacuum sealing device includes a connecting frame that docks with the vacuum packaging machine. The connecting frame is detachably and fixedly connected to the vacuum packaging machine by bolts. An upper feeding roller and a lower feeding roller are rotatably arranged inside the connecting frame. Mounting shafts are fixedly connected to both sides of the upper and lower feeding rollers. The mounting shafts are rotatably connected through the connecting frame. A motor is fixedly connected to one side of the connecting frame. The power end of the motor is fixedly connected to the outer end of the mounting shaft on the lower feeding roller side. Intermeshing gears are fixedly sleeved on the outer ends of the mounting shafts on the other side of the upper and lower feeding rollers.

[0006] Preferably, multiple sets of arc-shaped plates are connected to the outer side of the upper feeding roller, and a connecting rod is fixedly connected to the inner side of the arc-shaped plate. The connecting rod movably passes through the upper feeding roller and extends into the inner cavity of the upper feeding roller.

[0007] Preferably, a threaded rod is threadedly installed on the outer end of the mounting shaft on the outer side of the upper feeding roller, the inner end of the threaded rod extends into the upper feeding roller, a first conical block is fixedly connected to the inner end of the insertion rod, and a second conical block is fixedly connected to the inner end of the threaded rod, the inclined surface of the second conical block and the inclined surface of the first conical block can be mated and matched.

[0008] Preferably, a spring is provided between the first conical block and the inner wall of the upper feeding roller, and the spring is in a contracted state by default.

[0009] Preferably, it also includes an adjustment component for adjusting the positioning of the packaging bag. The adjustment component includes a fixed sleeve fixedly connected to the inner wall of the connecting frame. A threaded pin is movably inserted into the outer end of the fixed sleeve. An adjustment sleeve is rotatably connected to the outer end of the fixed sleeve. The adjustment sleeve is threadedly connected to the outer side of the threaded pin.

[0010] Preferably, a limiting groove is provided laterally on the outer side of the threaded pin, and a limiting block matching the limiting groove is fixedly connected to the inner wall of the fixing sleeve, and the limiting block is engaged with the limiting groove for limiting.

[0011] Preferably, a limiting plate is fixedly connected to the outer end of the threaded pin, and the position of the limiting plate can be adjusted as the threaded pin moves laterally.

[0012] Compared with existing technologies, the advantages of this utility model are: This invention uses a motor to drive the lower feeding roller to rotate, and with the help of meshing gears, it drives the upper feeding roller to rotate relative to it. The upper and lower feeding rollers can squeeze and convey the bag opening, and simultaneously smooth out the folds at the bag opening during the conveying process. This eliminates the need for manual adjustment, improves work efficiency, avoids the unevenness caused by manual operation, provides a flat bag opening base for subsequent sealing, and effectively reduces air leakage problems.

[0013] Based on this, by rotating the threaded rod, the inclined surfaces of the second conical block and the first conical block can be used to push the insertion rod up and down, thereby driving multiple sets of arc plates to synchronously adjust the distance between them and the lower feeding roller, adapting to packaging bags of different thicknesses; at the same time, when the conical block is released from contact, the spring can drive the arc plate to reset, preventing the packaging bag from being damaged due to excessive clamping or causing unstable conveying due to excessive looseness, thus ensuring the integrity of the packaging.

[0014] Based on this, the position of the limiting plate can be manually adjusted by adjusting the component. That is, the threaded pin can be driven to move laterally by rotating the adjusting sleeve. Combined with the locking and positioning of the limiting groove and the limiting block, it can effectively limit the two sides of packaging bags of different widths, ensuring that the packaging bags accurately enter the sealing station of the vacuum packaging machine, and completely solving the problem of sealing position deviation and sealing failure caused by offset. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the connecting frame structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the upper feeding roller of this utility model; Figure 4 This is an enlarged structural schematic diagram of the adjustment component of this utility model.

[0016] The following are the labels in the diagram: 1. Connecting frame; 2. Upper feed roller; 3. Lower feed roller; 4. Mounting shaft; 401. Motor; 402. Gear; 5. Arc plate; 6. Insert rod; 601. First conical block; 602. Spring; 603. Second conical block; 7. Threaded rod; 8. Adjusting assembly; 801. Fixing sleeve; 802. Threaded pin; 803. Adjusting sleeve; 804. Limiting groove; 805. Limiting block; 9. Limiting plate. Detailed Implementation

[0017] Please see Figure 1-4 A vacuum packaging machine vacuum sealing device includes a connecting frame 1 that is connected to the vacuum packaging machine. The connecting frame 1 is detachably fixed to the vacuum packaging machine by bolts. An upper feeding roller 2 and a lower feeding roller 3 are rotatably arranged inside the connecting frame 1. Mounting shafts 4 are fixedly connected to both sides of the upper and lower feeding rollers and are rotatably connected to the connecting frame 1 through the mounting shafts 4. A motor 401 is fixedly connected to one side of the connecting frame 1. The power end of the motor 401 is fixedly connected to the outer end of the mounting shaft 4 on one side of the lower feeding roller 3. The outer ends of the mounting shafts 4 on the other side of the upper and lower feeding rollers are fixedly fitted with mutually meshing gears 402. When the motor 401 rotates, it drives the lower feeding roller 3 to rotate, and the upper feeding roller 2 is driven to rotate relative to it through the meshing gears 402. When the operator places the bag opening between the upper and lower feeding rollers, the bag opening is squeezed by the upper and lower feeding rollers for conveying, thereby realizing automatic guiding and conveying and keeping the bag opening flat by squeezing.

[0018] Based on this, considering packaging bags of different thicknesses and the opening and closing issues between the upper and lower sets of feeding rollers, multiple sets of arc-shaped plates 5 are installed on the outer side of the upper feeding roller 2. Insertion rods 6 are fixedly connected to the inner side of the arc-shaped plates 5, and the insertion rods 6 extend through the upper feeding roller 2 and into its inner cavity. Simultaneously, a threaded rod 7 is threadedly installed on the outer end of the mounting shaft 4 on the outer side of the upper feeding roller 2, and the inner end of the threaded rod 7 extends into the upper feeding roller 2. A first conical block 601 is fixedly connected to the inner end of the insertion rod 6, and the inner end of the threaded rod 7 is also fixed... The second conical block 603 is connected. When the threaded rod 7 is rotated, the threaded rod 7 moves forward along the mounting shaft 4 into the internal thread. The inclined surface of the second conical block 603 at the inner end contacts the inclined surface of the first conical block 601 at the inner end of the multiple sets of plug-in rods 6, thereby pushing the plug-in rods 6 to move up and down within the upper feeding roller 2. This drives the multiple sets of arc plates 5 on the outer side to move up and down synchronously to adjust the distance between them and the lower feeding roller 3. This can not only meet the guiding and conveying of packaging bags of different thicknesses, but also realize the opening and closing between the upper and lower sets of feeding rollers, making it convenient for the packaging bags to enter and be taken out.

[0019] Based on this, a spring 602 is provided on the inner wall of the first conical block 601 and the upper feeding roller 2. The spring 602 is in the contracted state by default. When the first conical block 601 and the second conical block 603 are released from contact, the arc plate 5 can be driven to move back under the elastic contraction force of the spring 602.

[0020] Meanwhile, considering the issue of limiting the sides of packaging bags of different widths, the distance of the limiting plate 9 can be manually adjusted by adjusting component 8 to limit the sides of the packaging bag entering the vacuum packaging machine. The adjusting assembly 8 includes a fixed sleeve 801 fixedly connected to the inner wall of the connecting frame 1. A threaded pin 802 is movably inserted into the outer end of the fixed sleeve 801, and a limiting plate 9 is fixedly connected to the outer end of the threaded pin 802. Simultaneously, an adjusting sleeve 803 is rotatably connected to the outer end of the fixed sleeve 801. The adjusting sleeve 803 is threadedly connected to the outer side of the threaded pin 802. Rotation of the adjusting sleeve 803 can thread-drive the threaded pin 802. Since a limiting groove 804 is also laterally provided on the outer side of the threaded pin 802, which engages with a limiting block 805 on the inner wall of the fixed sleeve 801, the threaded pin 802 can move laterally horizontally within the fixed sleeve 801 under the rotational drive of the adjusting sleeve 803. This causes the limiting plate 9 at the outer end to adjust its position, limiting the two sides of packaging bags of different widths, facilitating their smooth entry into the working port of the vacuum packaging machine without spillage, thus indirectly providing a guiding and positioning effect and ensuring the smooth operation of subsequent vacuum sealing. The above describes the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum packaging machine air extraction and sealing device, characterized in that: The system includes a connecting frame (1) that is connected to a vacuum packaging machine. The connecting frame (1) is detachably and fixedly connected to the vacuum packaging machine by bolts. An upper feeding roller (2) and a lower feeding roller (3) are rotatably arranged inside the connecting frame (1). An installation shaft (4) is fixedly connected to both sides of the upper feeding roller (2) and the lower feeding roller (3). The installation shaft (4) is rotatably connected to the connecting frame (1). A motor (401) is fixedly connected to one side of the connecting frame (1). The power end of the motor (401) is fixedly connected to the outer end of the installation shaft (4) on one side of the lower feeding roller (3). Gears (402) that mesh with each other are fixedly sleeved on the outer ends of the installation shaft (4) on the other side of the upper feeding roller (2) and the lower feeding roller (3).

2. The vacuum packaging machine air extraction and sealing device according to claim 1, characterized in that: Multiple sets of arc-shaped plates (5) are connected to the outer side of the upper feeding roller (2). A plug rod (6) is fixedly connected to the inner side of the arc plate (5). The plug rod (6) moves through the upper feeding roller (2) and extends into the inner cavity of the upper feeding roller (2).

3. The vacuum packaging machine air extraction and sealing device according to claim 2, characterized in that: A threaded rod (7) is threadedly installed on the outer end of the mounting shaft (4) on the outer side of the upper feed roller (2). The inner end of the threaded rod (7) extends into the upper feed roller (2). A first conical block (601) is fixedly connected to the inner end of the plug rod (6). A second conical block (603) is fixedly connected to the inner end of the threaded rod (7). The inclined surface of the second conical block (603) and the inclined surface of the first conical block (601) can be mated and cooperated.

4. The vacuum packaging machine air extraction and sealing device according to claim 3, characterized in that: A spring (602) is provided between the first conical block (601) and the inner wall of the upper feeding roller (2), and the spring (602) is in a contracted state by default.

5. The vacuum packaging machine air extraction and sealing device according to claim 1, characterized in that: It also includes an adjustment component (8) for adjusting the limit of the packaging bag. The adjustment component (8) includes a fixed sleeve (801) fixedly connected to the inner wall of the connecting frame (1). A threaded pin (802) is movably inserted into the outer end of the fixed sleeve (801). An adjustment sleeve (803) is rotatably connected to the outer end of the fixed sleeve (801). The adjustment sleeve (803) is threadedly connected to the outer side of the threaded pin (802).

6. The vacuum packaging machine air extraction and sealing device according to claim 5, characterized in that: A limiting groove (804) is opened laterally on the outer side of the threaded pin (802), and a limiting block (805) matching the limiting groove (804) is fixedly connected to the inner wall of the fixed sleeve (801). The limiting block (805) is engaged with the limiting groove (804) for limiting.

7. The vacuum packaging machine air extraction and sealing device according to claim 5, characterized in that: The outer end of the threaded pin (802) is fixedly connected to a limiting plate (9), and the limiting plate (9) can be adjusted in position as the threaded pin (802) moves laterally.

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