Negative pressure buckling device and sealing machine

Abstract

The utility model provides a negative pressure buckling device and a sealing machine, the negative pressure buckling device is used for the sealing machine, the negative pressure buckling device comprises an air bag assembly, the air bag assembly comprises a base plate, a floating plate and a deformable air bag, the air bag is located between the base plate and the floating plate, and the air bag is provided with a plurality of independent air chambers; and the multiple air chambers communicate with the air exhaust assembly, and when the air chambers expand or contract, the floating plate can rise and fall along with the air bag to float. The air exhaust assembly can exhaust air from the multiple air chambers at the same time, so that the multiple air chambers contract synchronously and are consistent in deformation, the air bag can provide uniform downward pressure for all areas of the floating plate, the floating plate can drive the floating pressing plate to stably descend along with the air bag, and the vacuum bag is pressed through the floating pressing plate; and the descending strokes of all areas of the floating plate and the floating pressing plate are consistent, so that the pressing effect of the floating pressing plate on the vacuum bag is ensured, and the vacuumizing and sealing effects of the sealing machine are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of household appliances, in particular to a negative pressure buckling device and sealing machine. BACKGROUND

[0002] The household sealing machine is favored by more and more families due to its convenient operation, excellent preservation effect and wide applicability.

[0003] The existing sealing machine mainly uses a cylinder to suck the gas in the air bag, the air bag shrinks to drive the floating pressing plate to move downward, so that the heating wire seals the vacuum bag. However, the existing sealing machine mainly sets a cylinder at both ends of the air bag, and the two cylinders work simultaneously to suck out the gas in the air bag when in use. The air bag drives the floating pressing plate to move downward, realizes the pressing action on the vacuum bag, and then realizes the purpose of vacuumizing and sealing the vacuum bag. Since the two cylinders are arranged at both ends of the cross beam, the force acts on both ends when being pulled down. The floating pressing plate is deformed by the reaction force of the sealing ring, the middle part of the floating pressing plate is convex upward, the downward pressure is uneven, and the problems of insufficient vacuumizing, air leakage and sealing failure are caused. SUMMARY

[0004] Therefore, it is necessary to provide a negative pressure buckling device and sealing machine aiming at the above problems, which can provide uniform downward pressure on the floating pressing plate.

[0005] The utility model discloses a negative pressure buckling device for sealing machine, comprising: an air bag assembly, comprising a base plate, a floating plate and a deformable air bag, the air bag is located between the base plate and the floating plate, the air bag has a plurality of independent air chambers; and a gas suction assembly, each of the plurality of air chambers is communicated with the gas suction assembly, when the air chamber expands or shrinks, the floating plate can float up and down with the air bag.

[0006] In the above-mentioned negative pressure buckling device, the gas suction assembly can simultaneously suck the gas in the plurality of air chambers, so that the plurality of air chambers synchronously shrink and deform uniformly, thereby the air bag can provide uniform downward pressure on each area of the floating plate, so that the floating plate can drive the floating pressing plate to stably descend with the air bag, to press the vacuum bag through the floating pressing plate, and the descending stroke of each area of the floating plate and the floating pressing plate is consistent, avoiding the phenomenon that the floating plate and the floating pressing plate tilt or the middle part of the floating plate and the floating pressing plate is convex upward during the descending process, ensuring the pressing effect of the floating pressing plate on the vacuum bag, thereby ensuring the vacuumizing and sealing effect of the sealing machine.

[0007] In one of the embodiments, the air bag assembly further comprises a deformable partition, the air bag has an air cavity, and the partition is arranged along the length direction of the air bag to divide the air cavity into a plurality of air chambers.

[0008] In this way, the floating plate can be uniformly pressed in each area along the length direction, the stroke of each area of the floating plate is consistent, and the air bag and the partition have sufficient deformation space.

[0009] In one of the embodiments, the air bag comprises a bag body, a first sealing plate and a second sealing plate, the bag body is annular with two open ends, the first sealing plate and the second sealing plate are respectively connected to the bag body to form the air cavity, the first sealing plate is fixedly connected to the floating plate, and the second sealing plate is fixedly connected to the base plate.

[0010] In this way, the air bag can be conveniently processed and assembled, the base plate and the floating plate can be conveniently assembled, and the stability and reliability of the connection between the base plate, the floating plate and the air bag are improved.

[0011] In one of the embodiments, the two open ends of the bag body are provided with flanges, one of the flanges is crimped between the first sealing plate and the floating plate, and the other flange is crimped between the second sealing plate and the base plate.

[0012] In this way, the processing mode of crimping fixation is simple, the sealing of the air cavity can be ensured, and the stability and reliability of the connection between the base plate, the floating plate and the air bag are ensured.

[0013] In one of the embodiments, the cross-sectional area of the bag body gradually shrinks from the end close to the first sealing plate to the middle part of the bag body.

[0014] In this way, the side wall of the bag body can be deformed inward, the deformation effect is better, and the bag body can avoid occupying too much space inside the sealing machine.

[0015] In one of the embodiments, each air chamber is provided with a gas port, and the gas port is arranged at the position with the smallest cross-sectional area of the bag body.

[0016] In this way, the gas in the air chamber is more easily extracted through the gas port, the size of the gas port changes less, the gas extraction efficiency is improved, and the stress of each area in the air chamber during the gas extraction process is more uniform, and the uniformity of the stress of each area of the floating plate is improved.

[0017] In one of the embodiments, the bag body and the partition are integrally formed.

[0018] In this way, the air bag and the partition can be conveniently produced and assembled, the stability and reliability of the connection between the bag body and the partition are ensured, the deformation effect of the bag body and the partition is ensured, and the sealing of each air chamber is ensured.

[0019] In one of the embodiments, the bag body is a silica gel piece.

[0020] In this way, the silica gel piece has good softness and elasticity, so that the air bag and the partition can better deform and reset, and the silica gel piece also has good wear resistance and corrosion resistance, thereby prolonging the service life of the air bag assembly.

[0021] In one of the embodiments, a base is further included, the substrate is arranged on the base, and one of a guide groove or a guide column is arranged on the base, the other of the guide groove or the guide column is arranged on the floating plate, and the guide column is movably inserted into the guide groove.

[0022] In this way, the guide column and the guide groove cooperate to limit the lifting direction of the floating plate, avoiding the floating plate from tilting during lifting and affecting the pressing effect of the floating pressing plate on the vacuum bag.

[0023] The utility model also provides a sealing machine, include: casing, be equipped with floating pressing plate in the casing, and the negative pressure buckle device, the negative pressure buckle device is located in the casing, the floating pressing plate is located in the floating plate to drive the floating pressing plate lifts.

[0024] In this way, the floating plate can drive the floating pressing plate to stably descend with the air bag, ensuring the pressing effect of the floating pressing plate on the vacuum bag, thereby ensuring the vacuumizing and sealing effect of the sealing machine. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective structural schematic view of the negative pressure buckle device of one embodiment of the utility model;

[0026] Figure 2 It is an exploded schematic view of Figure 1 ;

[0027] Figure 3 It is an enlarged schematic view of A in Figure 2 ;

[0028] Figure 4 It is a partial sectional view schematic view of Figure 1 ;

[0029] Figure 5 It is a sectional view schematic view of the sealing machine of one embodiment of the utility model;

[0030] Figure 6 It is an enlarged schematic view of B in Figure 5 ;

[0031] Figure 7 It is a perspective structural schematic view of the floating pressing plate and the negative pressure buckle device in Figure 5 ;

[0032] Figure 8 It is a perspective structural schematic view of the floating pressing plate and the negative pressure buckle device inFigure 7 The installation schematic view of the floating pressure plate and the negative pressure buckling device.

[0033] 100, negative pressure buckling device; 10, air bag assembly; 11, base plate; 12, floating plate; 121, guide column; 122, buckle; 13, air bag; 131, air chamber; 1311, air port; 132, bag body; 1321, flange; 133, first sealing plate; 134, second sealing plate; 14, partition; 20, air extraction assembly; 21, air extraction pipe; 30, base; 31, guide groove; 200, shell; 201, floating pressure plate; 2011, clamping groove; 202, insertion groove; 203, first sealing element; 204, second sealing element; 205, heating element; 206, juice receiving element; 300, vacuum bag. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. When a component is referred to as being "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0037] The household sealing machine is favored by more and more families due to its convenient operation, excellent preservation effect and wide applicability. The existing sealing machine mainly uses a cylinder to suck the gas in the air bag, the air bag is contracted to drive the floating pressing plate to move downward, so that the heating wire seals the vacuum bag. However, the existing sealing machine mainly sets a cylinder at each end of the beam, and the two cylinders work simultaneously to extract the gas in the air bag. The air bag drives the floating pressing plate to move downward, realizes the pressing action of the vacuum bag, and then realizes the purpose of vacuumizing and sealing the vacuum bag. Since the two cylinders are arranged at the two ends of the beam, the force acts on the two ends when it is pulled down. The floating pressing plate is deformed by the reaction force of the sealing ring, the middle part of the floating pressing plate is protruded upward, the downward pressure is uneven, and the problems of insufficient vacuumizing, air leakage and sealing are caused.

[0038] In order to solve the above problems, as shown in Figures 1 to 8 The negative pressure buckling device and the sealing machine are provided, and the negative pressure buckling device can provide uniform downward pressure to the floating pressing plate.

[0039] As shown in Figure 4 The negative pressure buckling device 100 is used for the sealing machine, and the sealing machine generally includes a housing 200 provided with an insertion slot 202. The housing 200 is provided with a floating pressing plate 201, a first sealing member 203, a second sealing member 204, a heating member 205 and a first air extracting member (not shown in the figure). The floating pressing plate 201 is arranged above the insertion slot 202 and is connected with the negative pressure buckling device 100 to drive the floating pressing plate 201 to rise and fall through the negative pressure buckling device 100. The first sealing member 203 is arranged at the bottom of the floating pressing plate 201, the second sealing member 204 is arranged at the bottom wall of the insertion slot 202, the heating member 205 is arranged at the bottom of the floating pressing plate 201 or the bottom wall of the insertion slot 202, and the first air extracting member is communicated with the insertion slot 202. In use, the vacuum bag 300 to be sealed is inserted into the insertion slot 202 to a predetermined position, the negative pressure buckling device 100 drives the floating pressing plate 201 to descend, so that the floating pressing plate 201 presses the vacuum bag 300 to be sealed between the first sealing member 203 and the second sealing member 204, the first air extracting member works to extract the air in the vacuum bag 300, and the heating member 205 heats to seal the vacuum bag 300.

[0040] As shown in Figures 1 to 2 Specifically, the negative pressure buckling device 100 includes an air bag assembly 10 and an air extracting assembly 20. The air bag assembly 10 includes a base plate 11, a floating plate 12 and a deformable air bag 13. The air bag 13 is located between the base plate 11 and the floating plate 12, and has a plurality of independent air chambers 131. The plurality of air chambers 131 are communicated with the air extracting assembly 20. When the air chambers 131 expand or contract, the floating plate 12 can float up and down with the air bag 13.

[0041] Wherein, the length direction of the substrate 11, the floating plate 12 and the air bag 13 is defined as the X-axis direction, the width direction is defined as the Y-axis direction, and the lifting direction of the floating plate 12 is defined as the Z-axis direction.

[0042] In the negative pressure buckling device 100, the air extraction assembly 20 can simultaneously extract air from multiple air chambers 131, so that the multiple air chambers 131 are synchronously contracted and deformed uniformly, so that the air bag 13 can provide uniform downward pressure to each region of the floating plate 12, so that the floating plate 12 can drive the floating pressing plate 201 to stably descend with the air bag 13, so as to press the vacuum bag 300 through the floating pressing plate 201, and the travel of each region of the floating plate 12 and the floating pressing plate 201 is consistent, avoiding the phenomenon that the floating plate 12 and the floating pressing plate 201 are inclined or the middle part is upwardly protruded during the descending process, ensuring the pressing effect of the floating pressing plate 201 on the vacuum bag 300, thereby ensuring the vacuumizing and sealing effect of the sealing machine. After use, the air extraction assembly 20 can also simultaneously inflate multiple air chambers 131, so that the multiple air chambers 131 are synchronously expanded and deformed uniformly, so that the air bag 13 can provide uniform lifting force to each region of the floating plate 12, so that the floating plate 12 can drive the floating pressing plate 201 to stably ascend with the air bag 13.

[0043] As shown in Figure 2 The air extraction assembly 20 includes an air extraction pipe 21 and a second air extraction element (not shown in the figure), the air extraction pipe 21 is provided with an air outlet and multiple air inlets in communication with the air outlet, the air inlets are arranged one-to-one corresponding to the air chambers 131 and are in communication with the corresponding air chambers 131, and the air outlet is in communication with the second air extraction element. When the second air extraction element works, it can simultaneously extract the gas in the multiple air chambers 131 through the air extraction pipe 21, so that the multiple air chambers 131 are synchronously contracted and deformed uniformly. The second air extraction element can be a gas pump, a gas cylinder or other elements that can be used for air extraction.

[0044] As shown in Figures 2 to 4As shown in the drawings, in an embodiment, the air bag assembly 10 further comprises a deformable partition 14, the air bag 13 has a cavity, and the partition 14 is arranged along the length direction of the air bag 13 to divide the cavity into a plurality of chambers 131. Since the floating plate 12 and the air bag 13 have a large size along the length direction, the plurality of chambers 131 are arranged along the length direction of the air bag 13 in sequence, so that each area of the floating plate 12 along the length direction can be subjected to uniform downward pressure, thereby further ensuring that the descending stroke of each area of the floating plate 12 is consistent. Moreover, each chamber 131 also has a large size along the length direction of the air bag 13, so that the air bag 13 and the partition 14 have sufficient deformation space. Of course, in other embodiments, the partition can also be arranged along the width direction or other directions of the air bag 13, as long as the air bag 13 can provide uniform downward pressure to each area of the floating plate 12, and the present application is not limited in this regard.

[0045] As shown in the drawings, Figure 2 and Figure 6 As shown in the drawings, in an embodiment, the air bag 13 comprises a bag body 132, a first sealing plate 133 and a second sealing plate 134, the bag body 132 is annular with both ends open, the first sealing plate 133 and the second sealing plate 134 are respectively sealingly connected to the bag body 132 to form a cavity, the first sealing plate 133 is fixedly connected to the floating plate 12, and the second sealing plate 134 is fixedly connected to the base plate 11. The air bag 13 is formed by sealingly connecting the bag body 132, the first sealing plate 133 and the second sealing plate 134, which can facilitate the processing and assembly of the air bag 13. Moreover, since the bag body 132 will deform, the floating plate 12 is fixedly connected to the first sealing plate 133, and the base plate 11 is fixedly connected to the second sealing plate 134, which can also facilitate the assembly of the base plate 11 and the floating plate 12, improve the stability and reliability of the connection between the base plate 11, the floating plate 12 and the air bag 13, and improve the stability of the floating of the floating plate 12 with the air bag 13.

[0046] Of course, in other embodiments, the air bag 13 can comprise the bag body 132 and the first sealing plate 133, the bag body 132 has an open end structure, the first sealing plate 133 sealingly connects the opening of the bag body 132 to form a cavity, the first sealing plate 133 is fixedly connected to the floating plate 12, and the base plate 11 is fixedly connected to one end of the bag body 132 away from the first sealing plate 133; the air bag 13 can also comprise the bag body 132 and the second sealing plate 134, the bag body 132 has an open end structure, the second sealing plate 134 sealingly connects the opening of the bag body 132 to form a cavity, the second sealing plate 134 is fixedly connected to the base plate 11, and the floating plate 12 is fixedly connected to one end of the bag body 132 away from the second sealing plate 134; or, the air bag 13 can comprise a sealed bag body 132, the bag body 132 independently forms a cavity, and the floating plate 12 and the base plate 11 are respectively fixedly connected to both ends of the bag body 132.

[0047] As shown in Figure 2 and Figure 6 In an embodiment, both ends of the capsule 132 are open and have a flange 1321, one of which is crimped between the first sealing plate 133 and the floating plate 12, and the other is crimped between the second sealing plate 134 and the base plate 11. The floating plate 12, the first sealing plate 133 and one of the flanges 1321 of the capsule 132 are fixed by crimping, and the base plate 11, the second sealing plate 134 and the other flange 1321 of the capsule 132 are fixed by crimping. The processing method of crimping is simple, and can ensure the sealing of the air cavity, and also ensure the stability and reliability of the connection between the base plate 11, the floating plate 12 and the air bag 13. Of course, in other embodiments, the floating plate 12, the first sealing plate 133 and the capsule 132, and the base plate 11, the second sealing plate 134 and the capsule 132 can also be fixed and connected by other methods such as gluing and screwing, as long as the sealing of the air cavity and the stability and reliability of the connection between the base plate 11, the floating plate 12 and the air bag 13 can be ensured. The embodiments of the present application are not limited in this regard.

[0048] As shown in Figure 2 and Figure 6 As shown in

[0049] As shown in Figures 2 to 3As shown, in an embodiment, each air chamber 131 has an air port 1311, which is arranged at the position where the cross-sectional area of the capsule 132 is the smallest. In this way, when the air in the air chamber 131 is extracted by the air extraction assembly 20, the air in the air chamber 131 can flow more smoothly along the sidewall of the capsule 132 to the air port 1311, so that the air in the air chamber 131 is more easily extracted from the air port 1311, and the size of the air port 1311 changes less, so as to improve the air extraction efficiency. Moreover, since the position where the cross-sectional area of the capsule 132 is the smallest is located at the middle of the capsule 132, the air port 1311 is also located at the middle of the capsule 132, so that the stress of each region in the air chamber 131 during the air extraction process is more uniform, thereby further improving the uniformity of the stress of each region of the floating plate 12. Of course, in other embodiments, the air port 1311 can also be arranged at other positions of the second sealing plate 134 or the capsule 132, as long as it does not affect the floating of the floating plate 12 along with the lifting of the air bag 13, and the embodiments of the present application are not limited in this regard.

[0050] As shown, Figure 3 In an embodiment, the capsule 132 and the partition 14 are integrally formed. In this way, the production and assembly of the air bag 13 and the partition 14 are facilitated, and the stability and reliability of the connection between the capsule 132 and the partition 14 are ensured, the deformation effect of the capsule 132 and the partition 14 is ensured, and the sealing of each air chamber 131 is also ensured, so as to avoid the disconnection of the capsule 132 and the partition 14 during the deformation process, thereby causing the communication of each air chamber 131. Of course, in other embodiments, the capsule 132 and the partition 14 can be fixedly connected by gluing or other ways, as long as the stability and reliability of the connection between the capsule 132 and the partition 14 are ensured, and the sealing of each air chamber 131 is ensured, and the embodiments of the present application are not limited in this regard.

[0051] In an embodiment, the capsule 132 and the partition 14 can be both silica gel pieces, which have good softness and elasticity, so that the air bag 13 and the partition 14 can better deform and reset, and the silica gel pieces also have good wear resistance and corrosion resistance, thereby prolonging the service life of the air bag assembly 10. Of course, in other embodiments, the capsule 132 and the partition 14 can also be rubber pieces, polyurethane pieces, nylon or other elastic materials, and the embodiments of the present application are not limited in this regard.

[0052] As shown, Figures 1 to 2As shown, the negative pressure buckling device 100 further comprises a base 30, the base plate 11 is arranged on the base 30, and one of a guide groove 31 or a guide column 121 is arranged on the base 30, and the other of the guide groove 31 or the guide column 121 is arranged on the floating plate 12, and the guide column 121 is movably inserted into the guide groove 31. The cooperation of the guide column 121 and the guide groove 31 can limit the lifting direction of the floating plate 12, so as to ensure that the floating plate 12 always lifts and floats along the Y-axis direction, and avoid that the floating plate 12 is tilted during lifting to affect the pressing effect of the floating pressing plate 201 on the vacuum bag 300. The number of the guide column 121 can be one, two, three, four or more, and the four guide columns 121 can be arranged at four corners of the floating plate 12, and the guide groove 31 and the guide column 121 are arranged one by one.

[0053] As shown, Figure 4 The utility model embodiment further provides a sealing machine, including shell 200 and above-mentioned negative pressure buckling device 100, wherein: the shell 200 is equipped with floating pressing plate 201;The negative pressure buckling device 100 is arranged in the shell 200, and the floating pressing plate 201 is arranged on the floating plate 12 to drive the floating pressing plate 201 to lift. Specifically, the shell 200 is provided with an insertion slot 202, and the shell 200 is further provided with a first sealing element 203, a second sealing element 204, a heating element 205 and a first air extraction element (not shown in the figure). The floating pressing plate 201 is arranged above the insertion slot 202, the first sealing element 203 is arranged at the bottom of the floating pressing plate 201, the second sealing element 204 is arranged at the bottom wall of the insertion slot 202, the heating element 205 is arranged at the bottom of the floating pressing plate 201 or the bottom wall of the insertion slot 202, and the first air extraction element is communicated with the insertion slot 202. In use, the vacuum bag 300 to be sealed is inserted into the insertion slot 202 to a predetermined position, and the second air extraction element simultaneously extracts air from the plurality of air chambers 131, so that the plurality of air chambers 131 synchronously contract and deform uniformly, the air bag 13 can provide uniform downward pressure on each region of the floating plate 12, so that the floating plate 12 drives the floating pressing plate 201 to stably descend with the air bag 13, and the floating pressing plate 201 tightly presses the vacuum bag 300 to be sealed between the first sealing element 203 and the second sealing element 204, the first air extraction element works to extract air in the vacuum bag 300, and the heating element 205 heats to seal the vacuum bag 300. The first air extraction element can be a gas pump, a gas cylinder or other elements capable of air extraction.

[0054] Further, the shell 200 can further be provided with a detachable juice receiving element 206, which is arranged below the insertion slot 202. When the first air extraction element extracts air in the vacuum bag 300, juice in the vacuum bag 300 may flow into the juice receiving element 206. After use, the user can detach and pour out the juice in the juice receiving element 206, preventing the juice flowing out of the vacuum bag 300 from affecting the normal work of other elements in the sealing machine. The second sealing element 204 can be arranged at the top of the juice receiving element 206.

[0055] As Figures 6 to 8 shown in the illustrated embodiment, one of the floating pressing plate 201 and the floating plate 12 is provided with buckles 122, and the other is provided with a buckle slot 2011 capable of being clamped with the buckle 122, the number of the buckle 122 and the buckle slot 2011 is multiple, the multiple buckles 122 are arranged along the length direction or the width direction of the floating plate 12, and the buckle slot 2011 is arranged one by one with the buckle 122. The floating pressing plate 201 and the floating plate 12 are arranged in a split structure, which can facilitate the processing and assembly of the sealing machine, and the cooperation of the multiple buckles 122 and the buckle slot 2011 can ensure the stability and reliability of the connection between the floating pressing plate 201 and the floating plate 12, ensure that the floating plate 12 can provide uniform downward pressure on the floating pressing plate 201, so as to ensure that the floating pressing plate 201 can be lifted together with the floating plate 12, prevent the floating pressing plate 201 from being skewed relative to the floating plate 12 and affect the vacuumizing and sealing effect. Of course, in other embodiments, the floating pressing plate 201 and the floating plate 12 can also be fixedly connected by screws, adhesion, pressure connection and other ways, or the floating pressing plate 201 and the floating plate 12 can be integrally formed, as long as the floating pressing plate 201 can be lifted together with the floating plate 12, the embodiments of the present application are not limited here.

[0056] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0057] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A negative pressure fastening device for a sealing machine, characterized in that, include: An airbag assembly (10) includes a substrate (11), a floating plate (12), and a deformable airbag (13) located between the substrate (11) and the floating plate (12), the airbag (13) having a plurality of independent air chambers (131); and The air extraction assembly (20) is connected to a plurality of air chambers (131). When the air chambers (131) expand or contract, the floating plate (12) can float up and down with the airbag (13).

2. The negative pressure fastening device according to claim 1, characterized in that, The airbag assembly (10) further includes a deformable partition (14), the airbag (13) has an air cavity, and the partition (14) is spaced along the length of the airbag (13) to divide the air cavity into a plurality of air chambers (131).

3. The negative pressure fastening device according to claim 2, characterized in that, The airbag (13) includes a body (132), a first sealing plate (133), and a second sealing plate (134). The body (132) is annular with openings at both ends. The first sealing plate (133) and the second sealing plate (134) are respectively sealed to the body (132) and form the air cavity. The first sealing plate (133) is fixedly connected to the floating plate (12), and the second sealing plate (134) is fixedly connected to the base plate (11).

4. The negative pressure fastening device according to claim 3, characterized in that, The two ends of the capsule (132) each have flanges (1321), one of which is pressed between the first sealing plate (133) and the floating plate (12), and the other flange (1321) is pressed between the second sealing plate (134) and the substrate (11).

5. The negative pressure fastening device according to claim 3, characterized in that, The cross-sectional area of ​​the capsule (132) gradually shrinks from one end near the first sealing plate (133) toward the middle of the capsule (132).

6. The negative pressure fastening device according to claim 5, characterized in that, Each of the air chambers (131) has an air inlet (1311) located at the point of minimum cross-sectional area of ​​the bladder (132).

7. The negative pressure fastening device according to claim 3, characterized in that, The capsule (132) and the partition (14) are integrally formed.

8. The negative pressure fastening device according to claim 7, characterized in that, The capsule (132) is made of silicone.

9. The negative pressure fastening device according to claim 1, characterized in that, It also includes a base (30), the base plate (11) is disposed on the base (30), and the base (30) is provided with one of a guide groove (31) or a guide post (121), the floating plate (12) is provided with the other of a guide groove (31) or a guide post (121), and the guide post (121) is movably inserted into the guide groove (31).

10. A sealing machine, characterized in that, include: A housing (200) is provided with a floating pressure plate (201) inside the housing (200); and According to any one of claims 1 to 9, the negative pressure fastening device is disposed inside the housing (200), and the floating pressure plate (201) is disposed on the floating plate (12) to drive the floating pressure plate (201) to rise and fall.

Images