Sealing mechanism of air bag type stretch film packaging machine

Abstract

The utility model provides a sealing mechanism of an air bag type stretch film packaging machine, and relates to the technical field of sealing mechanisms. The equipment frame body is placed on the ground, a lower die base is arranged on the equipment frame body in a sliding mode, and a sealing assembly is installed on the equipment frame body. A mounting arm is fixed to the top end face of the equipment frame, two first electric cylinders are fixed to the top end face of the inner wall of the mounting arm, and the extending ends of the two first electric cylinders are located on the top end face of the upper die base. After air exhaust is completed, the plugging block and the lower die base are matched to complete sealing of the upper die and the lower die at the corresponding positions of the rectangular groove, then the air exhaust pipe is separated through the extrusion block and the stress block, and finally the sealing base and the lower die base are matched to complete distinguished sealing of articles one by one. The method can be realized without a plurality of electric elements and control elements, so that the equipment cost and the maintenance difficulty after damage are reduced.

Description

Technical Field

[0001] This utility model relates to the field of sealing mechanism technology, and in particular to a sealing mechanism for an airbag stretch film packaging machine. Background Technology

[0002] Lamination is a sealing process for items. It involves bonding an upper film and a lower film together to achieve the seal. During the bonding process, the upper and lower films need to be ironed together to seal them.

[0003] When distinguishing between film-sealed areas, the existing device first needs to use an electric cylinder to drive the outer film-sealing, then use an electric cylinder to distinguish between the sealed areas, and then use an electric drive to detach the air extraction nozzle. To achieve the above operations, multiple control components and electric cylinders are required, which directly leads to increased equipment costs and maintenance difficulties.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a sealing mechanism for an airbag stretch film packaging machine, in order to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a sealing mechanism for an airbag-type stretch film packaging machine. This addresses the issue that existing devices, when differentiating between film sealing and other processes, first require an electric cylinder to drive the outer film sealing, then another electric cylinder to perform the differential sealing, and finally an electric drive to disengage the air extraction nozzle. Performing these operations necessitates the use of multiple control components and electric cylinders, directly leading to increased equipment costs and maintenance difficulties.

[0006] This utility model provides a sealing mechanism for an airbag-type stretch film packaging machine, specifically including: a machine frame; the machine frame is placed on the ground, a lower mold base slides on the machine frame, and a sealing component is installed on the machine frame.

[0007] Furthermore, the sealing assembly consists of an installation arm, a first electric cylinder, an upper mold base, a heating tube, a fan, a through hole, a sealing seat, a fixing block, a first spring rod, an auxiliary seat, a rectangular groove, and a sealing block. The installation arm is fixed to the top surface of the equipment frame, and two first electric cylinders are fixed to the top surface of the inner wall of the installation arm. The extended ends of the two first electric cylinders are on the top surface of the upper mold base.

[0008] Furthermore, the upper mold base has a hollow structure inside, and a heating tube is installed inside the upper mold base. The heating tube has a corrugated structure, and an upper film and a lower film are provided between the upper mold base and the lower mold base.

[0009] Furthermore, the bottom of the upper mold base has through holes arranged in a rectangular array, and two fans are installed inside the upper mold base, with the two fans located above the heating tube.

[0010] Furthermore, the bottom surface of the upper mold base is welded with a sealing seat in a rectangular array. The sealing seat has an elliptical structure, is made of heating block material, and is electrically connected to an external power supply.

[0011] Furthermore, two fixing blocks are welded to the left and right ends of the upper mold base. A first spring rod is welded to the bottom end of each fixing block. The lower ends of the four first spring rods are welded to the auxiliary seat. The auxiliary seat is a U-shaped seat structure and is made of heating block material. The auxiliary seat is electrically connected to an external power supply and is located below the sealing seat.

[0012] Furthermore, an air extraction assembly is installed on the equipment frame. The air extraction assembly consists of a second spring rod, a connecting block, an air extraction pipe, a force-bearing block, and a compression block. A second spring rod is fixed on the equipment frame, a connecting block is fixed on the second spring rod, and an air extraction pipe is fixed on the connecting block. The air extraction pipe is connected to an air extraction pump through a pipe and is located between the upper and lower membranes.

[0013] Furthermore, a rectangular groove is provided on the outer side of the bottom end face of the auxiliary seat, and a rectangular block-shaped sealing block is welded on the air extraction pipe. The sealing block is aligned with the rectangular groove and the shapes match. When the auxiliary seat and the lower mold seat cooperate to realize the ironing of the upper and lower films, the rectangular groove and the sealing block are engaged. At this time, the upper and lower films at the engagement point of the rectangular groove and the sealing block are in a sealed state.

[0014] Furthermore, a force-bearing block is welded onto the air extraction pipe, and an extrusion block is fixed on the upper mold base. The extrusion block has an L-shaped structure, and one end of the extrusion block is cut. After the cutting, the lower end of the extrusion block is inclined. The extrusion block and the force-bearing block are aligned. When the auxiliary seat and the lower mold base cooperate to make the upper and lower films press against each other, the first electric cylinder is controlled to continue to extend. At this time, the extrusion block contacts the force-bearing block.

[0015] Furthermore, a sealing assembly is installed on one of the sealing seats on the right front side. The sealing assembly consists of a third spring rod and a sealing block. A third spring rod is fixed to the front end of one of the sealing seats on the right front side, and a sealing block is fixed to the lower end of the third spring rod. The sealing block is a rectangular block structure. The front end of the sealing block contacts the front end of the inner wall of the auxiliary seat, and the rear end of the sealing block contacts the front end of one of the sealing seats on the right side. The width of the sealing block is greater than the width of the rectangular groove.

[0016] Furthermore, the bottom surface of the sealing block is higher than the bottom surface of the auxiliary seat, and the bottom surface of the sealing block is lower than the bottom surface of the sealing seat. The sealing seat is made of heating block material and is electrically connected to an external power supply.

[0017] Furthermore, a blocking assembly is installed on the equipment frame. The blocking assembly consists of a second electric cylinder and a magnet. Two second electric cylinders are fixed to the bottom end of the equipment frame. A rectangular block-shaped magnet is fixed to the extended end of each of the two second electric cylinders. The two magnets are attracted to the left end of the lower mold base. At this time, the lower mold base is aligned with the upper mold base.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In this application, by setting up a sealing component, an air extraction component and a sealing component, firstly, the two first electric cylinders are controlled to extend, and the two first electric cylinders drive the upper mold base to move downward. At this time, the auxiliary seat cooperates with the lower mold base to achieve ironing and sealing of the upper and lower films.

[0020] Second, when the auxiliary seat and the lower mold seat cooperate to seal the upper and lower films, the external air pump is controlled to work. At this time, the gas between the upper and lower films can be extracted through the air extraction pipe. The first electric cylinder is then controlled to extend. Under the pressure of the extrusion block, the force block and the air extraction pipe move forward. At this time, the air extraction pipe can be separated from the upper and lower films.

[0021] Third, after the air extraction is completed, the sealing block and the lower mold base cooperate to seal the upper and lower films at the corresponding positions of the rectangular groove. Then, the air extraction pipe is detached by the extrusion block and the force-bearing block. Finally, the sealing seat and the lower mold base cooperate to complete the separation and sealing of each item. Compared with the existing device, this device can achieve external sealing, air extraction and separation sealing without the need for multiple electric components and control components, which reduces equipment costs and the difficulty of maintenance after damage.

[0022] In this application, by setting up a blocking component, when the lower mold base and the upper mold base are aligned, the lower mold base can be limited and blocked by two magnets. Furthermore, the magnetic attraction of the lower mold base ensures that the alignment of the lower mold base and the upper mold base is faster, avoids the lower mold base from sliding left and right, and improves processing efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0024] In the attached diagram:

[0025] Figure 1 A schematic axial view of the sealing mechanism of the airbag stretch film packaging machine according to the present invention is shown.

[0026] Figure 2 A front view structural schematic diagram of the sealing mechanism of the airbag stretch film packaging machine according to the present invention is shown;

[0027] Figure 3The present invention is shown Figure 1 A schematic diagram of the rotated axial view structure;

[0028] Figure 4 A partially cut-out axial view of the sealing mechanism of the airbag-type stretch film packaging machine according to the present invention is shown.

[0029] Figure 5 A schematic axial view of the lower mold base and lower mold according to the present invention is shown.

[0030] Figure 6 A schematic axial view of the upper mold base and through hole according to the present invention is shown;

[0031] Figure 7 This shows a schematic diagram of the axial view of the upper mold base after it has been cut open according to the present invention;

[0032] Figure 8 A schematic axial view of the air extraction assembly according to the present invention is shown.

[0033] Figure 9 The present invention is shown Figure 8 A magnified structural diagram at point A.

[0034] List of reference numerals

[0035] 1. Equipment frame;

[0036] 2. Lower mold base;

[0037] 3. Sealing assembly; 301. Mounting arm; 302. First electric cylinder; 303. Upper mold base; 304. Heating tube; 305. Fan; 306. Through hole; 307. Sealing seat; 308. Fixing block; 309. First spring rod; 310. Auxiliary seat; 311. Rectangular groove; 312. Sealing block;

[0038] 4. Air extraction assembly; 401. Second spring rod; 402. Connecting block; 403. Air extraction pipe; 404. Force-bearing block; 405. Compression block;

[0039] 5. Sealing assembly; 501. Third spring rod; 502. Sealing block;

[0040] 6. Apply film;

[0041] 7. Lower membrane;

[0042] 8. Blocking assembly; 801. Second electric cylinder; 802. Magnet. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used in this embodiment of the invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as being interpreted in an idealized or highly formalized sense, unless expressly defined in this embodiment of the invention.

[0045] The terms "first," "second," and similar words used in the embodiments of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Likewise, the terms "including" or "comprising" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper," "lower," "front," "rear," "top," "bottom," "vertical," and "horizontal" may be used to describe embodiments of this utility model; however, it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect," "link," "fix," and "attach" can refer to a direct connection between two elements or structures without other elements or structures, or to an indirect connection between two elements or structures through an intermediate element or structure, unless otherwise expressly stated herein.

[0046] Example 1:

[0047] As attached Figures 1 to 9 As shown:

[0048] This utility model provides a sealing mechanism for an airbag-type stretch film packaging machine, including: a machine frame 1; the machine frame 1 is placed on the ground, a lower mold base 2 slides on the machine frame 1, and a sealing component 3 is installed on the machine frame 1.

[0049] The sealing assembly 3 consists of a mounting arm 301, a first electric cylinder 302, an upper mold base 303, a heating tube 304, a fan 305, a through hole 306, a sealing seat 307, a fixing block 308, a first spring rod 309, an auxiliary seat 310, a rectangular groove 311, and a sealing block 312. The mounting arm 301 is fixed to the top surface of the equipment frame 1, and two first electric cylinders 302 are fixed to the top surface of the inner wall of the mounting arm 301. The extended ends of the two first electric cylinders 302 are on the top surface of the upper mold base 303.

[0050] The upper mold base 303 has a hollow structure inside, and a heating tube 304 is installed inside the upper mold base 303. The heating tube 304 has a wavy structure. An upper mold 6 and a lower mold 7 are provided between the upper mold base 303 and the lower mold base 2.

[0051] The upper mold base 303 has through holes 306 arranged in a rectangular array at its bottom. Two fans 305 are installed inside the upper mold base 303. The two fans 305 are located above the heating tube 304. During use, the fans 305 can quickly push the hot airflow from the heating tube 304 to the upper film 6, which can achieve rapid softening of the upper film 6.

[0052] Among them, the bottom end face of the upper mold base 303 is welded with a sealing seat 307 in a rectangular array. The sealing seat 307 has an elliptical structure and is made of heating block material. The sealing seat 307 is electrically connected to an external power supply. During use, when the sealing seat 307 moves downward to cooperate with the lower mold base 2 to press the upper film 6 and the lower film 7 together, the upper film 6 and the lower film 7 can be sealed.

[0053] Two fixing blocks 308 are welded to the left and right ends of the upper mold base 303. A first spring rod 309 is welded to the bottom end of each fixing block 308. The lower ends of the four first spring rods 309 are welded to the auxiliary seat 310. The auxiliary seat 310 is a U-shaped seat structure. The auxiliary seat 310 is made of heating block material and is electrically connected to an external power supply. The auxiliary seat 310 is located below the sealing seat 307. During sealing, the two first electric cylinders 302 are extended. The two first electric cylinders 302 drive the upper mold base 303 to move downward. At this time, the auxiliary seat 310 first cooperates with the lower mold base 2 to achieve the ironing sealing of the upper film 6 and the lower film 7.

[0054] The equipment frame 1 is equipped with an air extraction assembly 4, which consists of a second spring rod 401, a connecting block 402, an air extraction pipe 403, a force-bearing block 404, and a compression block 405. A second spring rod 401 is fixed on the equipment frame 1, a connecting block 402 is fixed on the second spring rod 401, and an air extraction pipe 403 is fixed on the connecting block 402. The air extraction pipe 403 is connected to an air extraction pump through a pipe and is located between the upper membrane 6 and the lower membrane 7.

[0055] The auxiliary seat 310 has a rectangular groove 311 on the outer side of its bottom end face. A rectangular block-shaped sealing block 312 is welded onto the air extraction pipe 403. The sealing block 312 is aligned with the rectangular groove 311 and their shapes match. When the auxiliary seat 310 and the lower mold base 2 work together to iron the upper film 6 and the lower film 7, the rectangular groove 311 and the sealing block 312 engage. At this time, the upper film 6 and the lower film 7 at the engagement point of the rectangular groove 311 and the sealing block 312 are sealed. During use, this ensures the efficiency of air extraction and prevents external air from entering between the upper film 6 and the lower film 7 from the air extraction pipe 403 during the air extraction process.

[0056] A force-bearing block 404 is welded onto the air extraction pipe 403, and an extrusion block 405 is fixed on the upper mold base 303. The extrusion block 405 has an L-shaped structure, and one end of the extrusion block 405 is cut to form an inclined structure. The extrusion block 405 is aligned with the force-bearing block 404. When the auxiliary seat 310 cooperates with the lower mold base 2 to press the upper mold 6 and lower mold 7 together, the first electric cylinder 302 is controlled to continue extending. At this time, the extrusion block 405... When in contact with the force-bearing block 404, during use, firstly, when the auxiliary seat 310 cooperates with the lower mold seat 2 to seal the upper film 6 and the lower film 7, the external air pump is controlled to work. At this time, the gas between the upper film 6 and the lower film 7 can be extracted through the air extraction pipe 403. Then, the first electric cylinder 302 is controlled to extend. At this time, under the pressure of the extrusion block 405, the force-bearing block 404 and the air extraction pipe 403 move forward, and the air extraction pipe 403 can be separated from the upper film 6 and the lower film 7.

[0057] Among them, a sealing assembly 5 is installed on a sealing seat 307 on the right front side. The sealing assembly 5 consists of a third spring rod 501 and a sealing block 502. A third spring rod 501 is fixed to the front end of a sealing seat 307 on the right front side. A sealing block 502 is fixed to the lower end of the third spring rod 501. The sealing block 502 is a rectangular block structure. The front end of the sealing block 502 contacts the front end of the inner wall of the auxiliary seat 310, and the rear end of the sealing block 502 contacts the front end of a sealing seat 307 on the right side. The width of the sealing block 502 is greater than the width of the rectangular groove 311.

[0058] Among them, the bottom end face of the sealing block 502 is higher than the bottom end face of the auxiliary seat 310, and the bottom end face of the sealing block 502 is lower than the bottom end face of the sealing seat 307. The sealing seat 307 is made of heating block material and is electrically connected to an external power supply. During use, after the air is evacuated, the sealing block 502 cooperates with the lower mold seat 2 to seal the upper film 6 and lower film 7 at the corresponding position of the rectangular groove 311. Then, the air extraction pipe 403 is disengaged by the extrusion block 405 and the force block 404. Finally, the sealing seat 307 cooperates with the lower mold seat 2 to complete the separation and sealing of each item.

[0059] Example 2:

[0060] Based on Embodiment 1, the following is also included: a blocking component 8 is installed on the equipment frame 1. The blocking component 8 consists of a second electric cylinder 801 and a magnet 802. Two second electric cylinders 801 are fixed on the bottom surface of the equipment frame 1. A rectangular block-shaped magnet 802 is fixed to the extended end of each of the two second electric cylinders 801. The two magnets 802 are attracted to the left end surface of the lower mold base 2. At this time, the lower mold base 2 is aligned with the upper mold base 303. When the lower mold base 2 is aligned with the upper mold base 303, the two magnets 802 can limit and block the lower mold base 2. Furthermore, the attraction of the magnets 802 to the lower mold base 2 makes it faster to ensure that the lower mold base 2 is aligned with the upper mold base 303, thus preventing the lower mold base 2 from sliding left and right.

[0061] The specific usage and function of this embodiment are as follows:

[0062] The two second electric cylinders 801 are extended to move the lower mold base 2 to the left on the equipment frame 1 until the left end face of the lower mold base 2 is attracted to the two magnets 802; the power supply to the heating tube 304 is turned on, and the fan 305 is controlled to rotate. The fan 305 can quickly push the hot airflow at the heating tube 304 to the upper film 6, which can quickly soften the upper film 6; during sealing, the two first electric cylinders 302 are extended, and the two first electric cylinders 302 drive the upper mold base 303 to move downward. At this time, the auxiliary seat 310 first cooperates with the lower mold base 2 to achieve the ironing and sealing of the upper film 6 and the lower film 7; when the auxiliary seat 310 cooperates with the lower mold base 2 to achieve the sealing of the upper film 6 and the lower film 7... The system seals and controls the operation of an external air pump. At this time, the air can be extracted from between the upper film 6 and the lower film 7 through the air extraction pipe 403. The system continues to control the extension of the first electric cylinder 302. At this time, under the pressure of the extrusion block 405, the force block 404 and the air extraction pipe 403 move forward, which completes the separation of the air extraction pipe 403 from between the upper film 6 and the lower film 7. After the air extraction is completed, the sealing block 502 cooperates with the lower mold base 2 to seal the upper film 6 and the lower film 7 at the corresponding position of the rectangular groove 311. Then, the air extraction pipe 403 is separated by the extrusion block 405 and the force block 404. Finally, the sealing seat 307 cooperates with the lower mold base 2 to complete the separation and sealing of each item.

[0063] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure shall be determined by the scope of the claims.

Claims

1. A sealing mechanism for an airbag-type stretch film packaging machine, characterized in that, include: Equipment frame (1); the equipment frame (1) is placed on the ground, a lower mold base (2) slides on the equipment frame (1), and a sealing assembly (3) is installed on the equipment frame (1); the sealing assembly (3) consists of an mounting arm (301), a first electric cylinder (302), an upper mold base (303), a heating pipe (304), a fan (305), a through hole (306), a sealing seat (307), a fixing block (308), a first spring rod (309), an auxiliary seat (310), a rectangular groove (311), and a seal. The equipment frame (1) is composed of a block (312). The top surface of the frame (1) is fixed with an installation arm (301). The top surface of the inner wall of the installation arm (301) is fixed with two first electric cylinders (302). The protruding ends of the two first electric cylinders (302) are on the top surface of the upper mold base (303). The upper mold base (303) is hollow inside. A heating tube (304) is installed inside the upper mold base (303). The heating tube (304) is wavy. An upper film (6) and a lower film (7) are provided between the upper mold base (303) and the lower mold base (2).

2. The sealing mechanism of the airbag stretch film packaging machine as described in claim 1, characterized in that: The bottom of the upper mold base (303) has through holes (306) arranged in a rectangular array. Two fans (305) are installed inside the upper mold base (303), and the two fans (305) are located above the heating tube (304).

3. The sealing mechanism of the airbag stretch film packaging machine as described in claim 2, characterized in that: The bottom surface of the upper mold base (303) is welded with a sealing seat (307) in a rectangular array. The sealing seat (307) has an elliptical structure and is made of heating block material. The sealing seat (307) is electrically connected to an external power supply.

4. The sealing mechanism of the airbag stretch film packaging machine as described in claim 3, characterized in that: The upper mold base (303) has two fixing blocks (308) welded to its left and right ends. Each fixing block (308) has a first spring rod (309) welded to its bottom end. The lower ends of the four first spring rods (309) are welded to the auxiliary seat (310). The auxiliary seat (310) is a U-shaped seat structure. The auxiliary seat (310) is made of heating block material. The auxiliary seat (310) is electrically connected to an external power supply. The auxiliary seat (310) is located below the sealing seat (307).

5. The sealing mechanism of the airbag stretch film packaging machine as described in claim 4, characterized in that: An air extraction assembly (4) is installed on the equipment frame (1). The air extraction assembly (4) consists of a second spring rod (401), a connecting block (402), an air extraction pipe (403), a force-bearing block (404), and a compression block (405). A second spring rod (401) is fixed on the equipment frame (1). A connecting block (402) is fixed on the second spring rod (401). An air extraction pipe (403) is fixed on the connecting block (402). The air extraction pipe (403) is connected to the air extraction pump through a pipe. The air extraction pipe (403) is located between the upper membrane (6) and the lower membrane (7).

6. The sealing mechanism of the airbag stretch film packaging machine as described in claim 5, characterized in that: A rectangular groove (311) is provided on the outer side of the bottom end face of the auxiliary seat (310). A rectangular block-shaped sealing block (312) is welded on the air extraction pipe (403). The sealing block (312) is aligned with the rectangular groove (311) and the shapes match. When the auxiliary seat (310) and the lower mold base (2) cooperate to iron the upper film (6) and the lower film (7), the rectangular groove (311) and the sealing block (312) are engaged. At this time, the upper film (6) and the lower film (7) at the engagement point of the rectangular groove (311) and the sealing block (312) are in a sealed state.

7. The sealing mechanism of the airbag stretch film packaging machine as described in claim 6, characterized in that: A force-bearing block (404) is welded onto the air extraction pipe (403), and an extrusion block (405) is fixed on the upper mold base (303). The extrusion block (405) has an L-shaped structure. One end of the extrusion block (405) is cut. After the cutting, the lower end of the extrusion block (405) is inclined. The extrusion block (405) is aligned with the force-bearing block (404). When the auxiliary seat (310) and the lower mold base (2) cooperate to make the upper film (6) and the lower film (7) press against each other, the first electric cylinder (302) is controlled to continue to extend. At this time, the extrusion block (405) contacts the force-bearing block (404).

8. The sealing mechanism of the airbag stretch film packaging machine as described in claim 7, characterized in that: A sealing assembly (5) is installed on a sealing seat (307) on the right front side. The sealing assembly (5) consists of a third spring rod (501) and a sealing block (502). A third spring rod (501) is fixed on the front end face of a sealing seat (307) on the right front side. A sealing block (502) is fixed at the lower end of the third spring rod (501). The sealing block (502) is a rectangular block structure. The front end face of the sealing block (502) contacts the front end face of the inner wall of the auxiliary seat (310). The rear end face of the sealing block (502) contacts the front end face of a sealing seat (307) on the right side. The width of the sealing block (502) is greater than the width of the rectangular groove (311).

9. The sealing mechanism of the airbag stretch film packaging machine as described in claim 8, characterized in that: The bottom surface of the sealing block (502) is higher than the bottom surface of the auxiliary seat (310), and the bottom surface of the sealing block (502) is lower than the bottom surface of the sealing seat (307). The sealing seat (307) is made of heating block material and is electrically connected to an external power supply.

10. The sealing mechanism of the airbag stretch film packaging machine as described in claim 9, characterized in that: A blocking assembly (8) is installed on the equipment frame (1). The blocking assembly (8) consists of a second electric cylinder (801) and a magnet (802). Two second electric cylinders (801) are fixed on the bottom surface of the equipment frame (1). A rectangular block magnet (802) is fixed on the extended end of each of the two second electric cylinders (801). The two magnets (802) are attracted to the left end of the lower mold base (2). At this time, the lower mold base (2) is aligned with the upper mold base (303).

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