A vacuum sealing device for packaging bags

Abstract

This utility model discloses a vacuum sealing device for packaging bags, comprising two hot-press sealing blocks arranged opposite each other and supported by a support block to maintain reverse movement; a heat source pipe disposed on the side of the hot-press sealing blocks and supplying a heating medium to the interior of the hot-press sealing blocks; and a vacuum pipe disposed between the two hot-press sealing blocks and continuously moving up and down; when the vacuum pipe descends to its lowest point, the bottom of the vacuum pipe is inserted into the opening of the packaging bag and positioned above the hot-press sealing blocks. This vacuum sealing device can be used on automatic packaging machines to facilitate automatic sealing and vacuuming of the packaging bag opening, thereby extending the storage time of the material.

Description

Technical Field

[0001] This utility model relates to the field of material packaging technology, specifically a vacuum sealing device for packaging bags. Background Technology

[0002] Currently, materials are usually packaged using automatic packaging machines. The packaging process of automatic packaging machines is roughly divided into several steps: bag taking, bag opening, filling, sealing, cutting, and bag removal. In order to achieve the aforementioned packaging process, clamping equipment is usually used to clamp the bag opening to facilitate the operation of each step.

[0003] Currently, automatic packaging machines cannot achieve vacuum sealing of packaging bags. Therefore, after sealing, some air remains inside the packaging bag, which may shorten the storage time of the material and affect its shelf life. Utility Model Content

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a vacuum sealing device for packaging bags. This vacuum sealing device can be applied to automatic packaging machines. During the packaging process, the bag opening can be sealed by the opposing and counter-moving heat-pressing sealing blocks. At the same time, by setting a liftable air extraction pipe, it can be lowered and inserted into the bag opening during the sealing process to extract the internal air, thereby achieving vacuum sealing, extending the shelf life of the internal materials. Furthermore, by reasonably setting the height of the air extraction pipe during lifting and lowering, the sealing of the bag opening can be avoided during the vacuuming process, ensuring the normal operation of the sealing.

[0005] This invention is achieved by constructing a vacuum sealing device for packaging bags, comprising two thermo-press sealing blocks, which are arranged opposite each other and supported by a support block to maintain reverse movement.

[0006] A heat source pipe is installed on the side of the hot-press sealing block and provides a heating medium to the interior of the hot-press sealing block;

[0007] The air extraction pipe is positioned between two thermostatic sealing blocks and is kept moving up and down;

[0008] When the suction tube descends to its lowest point, the bottom of the suction tube is inserted into the opening of the packaging bag and is above the heat-sealing block.

[0009] Preferably, it also includes a support rod and a housing, the housing being fixed to the top of the support rod, and two sliding rods being provided through the housing, the two sliding rods being distributed vertically, and the two hot-press sealing blocks being fixed to the ends of the slider by the support blocks for support.

[0010] Preferably, a rotating rod is provided between the two sliding rods. One end of the rotating rod is driven by a driving device to rotate forward or backward, and the other end of the rotating rod is provided with a transmission rod. The center of the transmission rod is sleeved on the rotating rod, and both ends of the transmission rod are movably connected to the sliding rod.

[0011] Preferably, the transmission rod has strip-shaped holes at both ends, and the slide rod has pins on its side that are inserted into the strip-shaped holes to maintain linear movement.

[0012] Preferably, the box is equipped with a linear telescopic device, which is set vertically and has a mounting block at the bottom. The air extraction pipe is fixed to the mounting block, and a negative pressure pipe is also connected to the outside of the top of the air extraction pipe. The negative pressure pipe passes through the box and slides up and down.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This device can be directly applied to automatic packaging machines. Through the coordinated work of the opposing and counter-moving heat-pressing sealing blocks and the liftable vacuum tube, vacuuming and bag sealing operations are completed simultaneously during the packaging process. No additional manual intervention or independent equipment is required, realizing an automated integrated process for vacuum sealing, which effectively improves packaging efficiency and reduces labor costs.

[0015] By using a liftable vacuum tube inserted into the bag opening during the sealing process to extract internal air, a vacuum environment is created inside the bag. This effectively inhibits spoilage caused by oxidation and microbial growth, significantly extending the shelf life of the contents. It is particularly suitable for packaging materials such as food and pharmaceuticals that have high requirements for freshness and storage time. It cleverly solves the potential mutual interference between vacuuming and bag sealing. Through a highly adaptable structural design, the vacuuming and heat-sealing operations can be carried out in an orderly and efficient manner, ensuring both the effectiveness of vacuuming and the proper functioning of the sealing process, thus improving the stability and consistency of the entire packaging process. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model without the box body;

[0019] Figure 3 This is a schematic diagram of the present invention with the housing removed and the transmission rod shown.

[0020] Figure 4 This is a schematic diagram of the structure of the present invention with the housing removed and the display drive device shown.

[0021] Figure 5 This is a schematic diagram of the structure of this utility model applied to an automatic packaging machine;

[0022] In the diagram: 1. Support rod; 2. Box body; 3. Support block; 4. Hot-press sealing block; 5. Heat source pipe; 6. Air extraction pipe; 7. Negative pressure pipe; 8. Linear telescopic device; 9. Slide rod; 10. Mounting block; 11. Rotating rod; 12. Transmission rod; 13. Drive device; 14. Rotary clamping mechanism; 15. Packaging bag. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0024] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] As described in the background section, existing automatic packaging machines cannot remove the air from the packaging bag during the sealing process. As a result, air remains inside after sealing, which can easily lead to bacterial growth and thus affect the storage time of the material.

[0026] Based on the above reasons, in order to solve the above problems, this utility model provides the following technical solution:

[0027] Example 1,

[0028] Please see the appendix Figure 1 A vacuum sealing device for packaging bags includes two thermostatic sealing blocks 4, which are arranged opposite each other and supported by support blocks 3 to maintain reverse movement;

[0029] The heat source pipe 5 is located on the side of the hot-press sealing block 4 and provides heating medium to the interior of the hot-press sealing block 4.

[0030] The air extraction pipe 6 is positioned between two hot-press sealing blocks 4 and is kept moving up and down;

[0031] When the suction pipe 6 descends to its lowest point, the bottom of the suction pipe 6 is inserted into the opening of the packaging bag and is above the heat-sealing block 4.

[0032] Example 2,

[0033] Please see the appendix Figure 1 and attached Figure 2 Based on Embodiment 1, in order to solve the problem that the hot-press sealing block cannot be matched and installed with external packaging equipment, a feasible solution is provided here. The vacuum sealing device also includes a support rod 1 and a box 2. The box 2 is fixed to the top of the support rod 1. Two slide rods 9 are arranged through the box 2. The two slide rods 9 are distributed vertically. The two hot-press sealing blocks 4 are fixed to the ends of the slide rods 9 by the support block 3 for support.

[0034] Example 3,

[0035] Please see the appendix Figure 3 and attached Figure 4 Based on Embodiment 2, in order to solve the problem that the two hot-pressed sealing blocks cannot achieve synchronous reverse movement, a feasible solution is provided here. A rotating rod 11 is provided between the two sliding rods 9. One end of the rotating rod 11 is driven by the driving device 13 to rotate forward or reverse. The other end of the rotating rod 11 is provided with a transmission rod 12. The center of the transmission rod 12 is sleeved on the rotating rod 11, and the two ends of the transmission rod 12 are movably connected to the sliding rods 9 respectively.

[0036] In this embodiment, the transmission rod 12 has strip-shaped holes at both ends, and the slide rod 9 has a pin on its side that is inserted into the strip-shaped hole to maintain linear movement.

[0037] Furthermore, the driving device is a drive motor.

[0038] As described above, the drive device drives the rotating rod to rotate, which in turn drives the transmission rod to rotate. Since the two ends of the transmission rod are slidably connected to the pins on the side of the slide rod through the strip hole, during the rotation, the two slide rods pass through the box body and slide in opposite directions through the limiting of the strip hole, thereby realizing the movement of the two hot-press sealing blocks away from each other or closer to each other, and thus realizing the hot-press sealing of the bag opening.

[0039] Example 4,

[0040] Please see the appendix Figure 2 ~Appendix Figure 4Based on Embodiment 2, in order to solve the problem of not being able to achieve vacuum sealing of packaging bags, a feasible solution is provided here. A linear telescopic device 8 is provided inside the box body 2. The linear telescopic device 8 is kept vertical and has a mounting block 10 at the bottom. The air extraction pipe 6 is fixed on the mounting block 10. A negative pressure pipe 7 is also connected to the outside of the top of the air extraction pipe 10. The negative pressure pipe 7 passes through the box body 2 and slides up and down.

[0041] For instructions on using this vacuum sealing device, please refer to the attached document. Figure 5 The automatic packaging machine's rotary clamping mechanism 14 rotates the clamped and opened packaging bag 15 to the bottom of the vacuum sealing device. Then, the linear telescopic device 8 extends, driving the suction pipe 6 to descend and insert into the bag opening of the packaging bag 15. The external negative pressure device and negative pressure pipe 7 generate negative pressure, continuously drawing air out of the packaging bag 15 from the suction pipe 6 and negative pressure pipe 7. At the same time, the drive device 13 drives the rotating rod 11 to rotate, which in turn drives the sliding rod 9 to move linearly through the transmission rod 12, causing the hot-press sealing block 4 on the outside of the bag opening of the packaging bag 15 to approach and squeeze the bag opening together. Finally, after the heating medium is introduced into the hot-press sealing block 4 through the heat source pipe 5, the packaging bag is heated under the action of heat conduction, causing the packaging bag to melt and stick together, thus achieving sealing and completing the vacuum sealing operation. After sealing, the excess packaging bag material on the outside of the seal can be cut off by the cutting mechanism.

[0042] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A vacuum sealing device for a bag, characterized by: include, Two hot-pressed sealing blocks are arranged opposite each other and supported by support blocks to maintain opposite movements; A heat source pipe is installed on the side of the hot-press sealing block and provides a heating medium to the interior of the hot-press sealing block; The air extraction pipe is positioned between two thermostatic sealing blocks and is kept moving up and down; When the suction tube descends to its lowest point, the bottom of the suction tube is inserted into the opening of the packaging bag and is above the heat-sealing block.

2. The vacuum sealing device for packaging bags according to claim 1, characterized in that: It also includes a support rod and a housing. The housing is fixed to the top of the support rod. Two sliding rods are installed through the housing. The two sliding rods are distributed vertically. The two hot-press sealing blocks are fixed to the ends of the sliders by the support blocks for support.

3. The vacuum sealing device for packaging bags according to claim 2, characterized in that: A rotating rod is provided between the two sliding rods. One end of the rotating rod is driven by a driving device to rotate forward or backward, and the other end of the rotating rod is provided with a transmission rod. The center of the transmission rod is sleeved on the rotating rod, and the two ends of the transmission rod are movably connected to the sliding rod.

4. The vacuum sealing device for packaging bags according to claim 3, characterized in that: The transmission rod has slotted holes at both ends, and the slide rod has pins on its side that are inserted into the slotted holes to maintain linear movement.

5. A vacuum sealing device for packaging bags according to claim 2, characterized in that: The box is equipped with a linear telescopic device, which is set vertically and has a mounting block at the bottom. The air extraction pipe is fixed to the mounting block, and a negative pressure pipe is also connected to the outside of the top of the air extraction pipe. The negative pressure pipe passes through the box and slides up and down.

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