Pneumatic sealing structure of sealing machine

Abstract

The utility model discloses a pneumatic sealing structure of a sealing machine, which belongs to the technical field of sealing machines and comprises a shell, a notch is arranged on the front side of the shell, a front box body is arranged on the notch, a front box body pressing strip and a front box body concave cavity are arranged on the front box body, and a pressing plate, an air bag transmission component and a driving cylinder are further arranged on the shell. The pressing plate extends in the direction of the notch, a bag inlet allowing a plastic bag to stretch into is formed between the pressing plate and the front box body, a heating piece corresponding to the front box body pressing strip and a pressing plate concave cavity corresponding to the front box body concave cavity are arranged on the pressing plate, and a sealing piece is arranged on the periphery of the pressing plate concave cavity or the front box body concave cavity. The air bag transmission assembly is connected with the driving air cylinder in a matched mode and is in driving connection with the pressing plate. According to the structure, the air bag transmission assembly inclines and shrinks towards the bag inlet through air exhaust of the driving air cylinder, the pressing plate is driven to incline towards the bag inlet, the heating piece is driven to be obliquely pressed on the front box body pressing strip, and the pressing plate concave cavity and the front box body concave cavity are obliquely sealed and pressed through the sealing piece.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing machines, in particular to a pneumatic sealing structure of a sealing machine. Background Art

[0002] The utility model patent with Chinese patent number 202320823839.X discloses a portable vacuum sealer, which includes a main unit and a base. The main unit includes a shell with a cavity inside, a vacuum pump arranged in the cavity, and an air bag passing through the bottom of the shell; the air bag is provided with an air suction nozzle, and the vacuum pump and the air suction nozzle are connected by an air suction pipe; the base is arranged under the main unit and is detachably connected to the air bag through a snap-fit structure. When the vacuum pump is started, the air bag contracts and drives the base to move toward the bottom of the shell through the snap-fit structure, thereby pressing the opening of the plastic bag and completing the internal vacuuming and heat sealing of the plastic bag. However, the air bag is a soft part, and it will have local position offset or folding problems when it shrinks, resulting in the sealing strip and the heating plate being unable to be effectively pressed at the opening of the plastic bag, resulting in poor or even failure of the vacuuming and heat sealing of the plastic bag, affecting the user experience. Therefore, further improvement is necessary. Utility Model Content

[0003] The utility model aims to provide a pneumatic sealing structure of a sealing machine to overcome the deficiencies in the prior art.

[0004] The pneumatic sealing structure of a sealing machine designed for this purpose includes a shell, a notch is provided on the front side of the shell, a front box body is provided on the notch, a front box body strip and a front box body concave cavity are provided on the front box body, and a pressing plate, an airbag transmission assembly, and a driving cylinder are also provided on the shell, the pressing plate extends toward the notch, and a bag entrance for the plastic bag to be inserted is formed between the pressing plate and the front box body, a heating element corresponding to the front box body strip and a pressing plate concave cavity corresponding to the front box body concave cavity are provided on the pressing plate, a sealing member is provided on the pressing plate concave cavity or the periphery of the front box body concave cavity, the airbag transmission assembly is cooperatively connected with the driving cylinder and is driven by the pressing plate, the airbag transmission assembly is tilted and contracted toward the bag entrance by the suction of the driving cylinder, and drives the pressing plate to tilt toward the bag entrance, and drives the heating element to be tilted and pressed on the front box body strip, and the pressing plate concave cavity and the front box body concave cavity are tilted and sealed and pressed by the sealing member.

[0005] The airbag transmission assembly includes an airbag base, an airbag lower positioning plate, an airbag, and an airbag upper movable plate, wherein the airbag base is fixedly arranged on the shell, the airbag lower positioning plate is fixedly arranged on the airbag base, the bottom of the airbag is sealedly connected to the airbag lower positioning plate, the top is sealedly connected to the airbag upper movable plate, and the airbag upper movable plate is drivingly connected to the pressing plate.

[0006] The upper movable plate of the airbag or the lower positioning plate of the airbag is provided with an abutment portion on the side away from the bag entrance. When the airbag shrinks, the upper movable plate of the airbag drives the upper movable plate of the airbag to move toward the direction of the lower positioning plate of the airbag. When the upper movable plate of the airbag moves to a certain position, one side of the upper movable plate of the airbag abuts against the lower positioning plate of the airbag through the abutment portion, and the other side is inclined toward the direction of the bag entrance.

[0007] An upper plate clamping part is provided on the upper movable plate of the airbag, an air inlet and a lower plate clamping part are provided on the lower positioning plate of the airbag, a pressure plate clamping part is provided on the pressing plate, and an airbag base clamping part is provided on the airbag base. The upper plate clamping part and the pressure plate clamping part are clamped and matched with each other, and the lower plate clamping part and the airbag base clamping part are clamped and matched with each other. The lower positioning plate of the airbag is connected to the air pipe through the air inlet and is connected to the driving cylinder.

[0008] The airbag base is provided with a movable guide portion, and the upper movable plate of the airbag is provided with a movable guide matching portion, and the airbag moves on the movable guide portion through the guidance of the movable guide matching portion.

[0009] The shell includes an outer shell and a base plate, the base plate is fixedly arranged at the bottom of the outer shell, the airbag transmission assembly and the driving cylinder are respectively arranged on the base plate, and a vacuum pump is also arranged on the base plate. A vent is provided on the concave cavity of the pressing plate, and the vent is connected to the air pipe and is connected to the vacuum pump.

[0010] The bottom plate is provided with a reset elastic member in a direction close to the bag inlet, and is elastically matched with the pressing plate through the reset elastic member.

[0011] The notch is arranged on the front side of the bottom plate and / or the shell, and the left and right ends thereof are respectively provided with front and rear pointing guide rails, the rear side wall is provided with a snap-fitting part, the left and right ends of the front box body are respectively provided with open guide grooves, and the front side wall is provided with a snap-fitting part, the front box body is disassembled and assembled on the notch through the matching guidance of the open guide grooves and the guide rails, and is snap-fitted with the snap-fitting part through the snap-fitting part during assembly.

[0012] An electric control box is provided on the bottom plate, and the electric control box is electrically connected to the driving cylinder, the heating element, and the vacuum pump respectively.

[0013] The surface of the shell is further provided with a connecting groove, a knife groove part is movably provided on the connecting groove, and a cutting knife is movably provided on the knife groove part.

[0014] The utility model improves the above-mentioned structure and uses a driving cylinder to extract the air inside the airbag transmission assembly and make the airbag transmission assembly contract and move. At the same time, the airbag transmission assembly tilts when contracting and drives the pressing plate to tilt toward the bag entrance, so that the heating element can be tilted and pressed on the front box body strip, and the pressing plate cavity and the front box body cavity are tilted and sealed by the sealing element to ensure that the pressing plate cavity and the front box body cavity can be effectively sealed and the plastic bag is vacuumed, and the heating element and the front box body strip can be effectively pressed and the plastic bag is heat-sealed, which effectively ensures that the airbag transmission assembly can contract and move according to the specified position, avoids the problem of local position offset or folding when the airbag transmission assembly in the prior art contracts, and thus ensures that the plastic bag can complete effective vacuuming and heat sealing, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the present invention from another perspective.

[0018] Figure 4 This is a schematic diagram of the assembly cross-section of the front box body, pressing plate, and airbag transmission component before pressing.

[0019] Figure 5 This is a schematic diagram of the assembled cross-sectional structure of the front box body, pressing plate, and airbag transmission component after pressing.

[0020] Figure 6 Schematic diagram of the exploded structure of the airbag transmission assembly.

[0021] Figure 7 This is a schematic diagram of the decomposed structure of the airbag transmission component from another perspective. DETAILED DESCRIPTION

[0022] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See also Figure 1-Figure 7 The pneumatic sealing structure of the sealing machine includes a shell, a notch is provided on the front side of the shell, a front box body 1 is provided on the notch, a front box body pressure strip 2 and a front box body cavity 3 are provided on the front box body 1, a pressing plate 4, an airbag transmission component A, and a driving cylinder 5 are also provided on the shell, the pressing plate 4 extends toward the notch and forms a bag entrance 6 for the plastic bag to be inserted between the pressing plate 4 and the front box body 1, a heating element 7 corresponding to the front box body pressure strip 2 and a heating element 8 corresponding to the front box body cavity 3 are provided on the pressing plate 4. The pressing plate cavity 8, the pressing plate cavity 8 or the front box body cavity 3 is provided with a sealing member 9 on the periphery, the airbag transmission assembly A is connected with the driving cylinder 5 and is connected with the pressing plate 4 by driving, the airbag transmission assembly A is tilted and contracted toward the direction of the bag inlet 6 by the suction of the driving cylinder 5, and drives the pressing plate 4 to tilt toward the direction of the bag inlet 6, and drives the heating element 7 to be tilted and pressed on the front box body strip 2, and the pressing plate cavity 8 and the front box body cavity 3 are tilted and sealed and pressed through the sealing member 9.

[0025] This embodiment uses a driving cylinder 5 to extract the air inside the airbag transmission component A and make the airbag transmission component A shrink and move. At the same time, the airbag transmission component A tilts when shrinking and drives the pressing plate 4 to tilt toward the bag inlet 6, so that the heating element 7 can be tilted and pressed on the front box body strip 2, and the pressing plate cavity 8 and the front box body cavity 3 are tilted and sealed and pressed by the sealing element 9 to ensure that the pressing plate cavity 8 and the front box body cavity 3 can be effectively sealed and the plastic bag can be vacuumed, and the heating element 7 and the front box body strip 2 can be effectively pressed and the plastic bag can be heat-sealed, which effectively ensures that the airbag transmission component A can shrink and move according to the specified position, avoiding the problem of local position offset or folding when the airbag transmission component A shrinks in the prior art, thereby ensuring that the plastic bag can be effectively vacuumed and heat-sealed, thereby improving the user experience.

[0026] The airbag transmission assembly A includes an airbag base 10, an airbag lower positioning plate 11, an airbag 12, and an airbag upper movable plate 13, wherein the airbag base 10 is fixedly set on the shell, the airbag lower positioning plate 11 is fixedly set on the airbag base 10, the bottom of the airbag 12 is sealedly connected to the airbag lower positioning plate 11, and the top is sealedly connected to the airbag upper movable plate 13, and the airbag upper movable plate 13 is drivingly connected to the pressing plate 4.

[0027] The upper movable plate 13 of the airbag or the lower positioning plate 11 of the airbag is provided with a supporting portion 14 on the side away from the bag inlet 6. When the airbag 12 shrinks, it drives the upper movable plate 13 of the airbag to move toward the lower positioning plate 11 of the airbag. When the upper movable plate 13 of the airbag moves to a certain position, one side of it and the lower positioning plate 11 of the airbag are pressed against each other through the supporting portion 14, and the other side is inclined toward the bag inlet 6.

[0028] In this embodiment, the upper movable plate 13 of the airbag is provided with a supporting portion 14 on the side away from the bag inlet 6. The airbag 12 extracts internal air and shrinks by driving the cylinder 5. When the airbag 12 shrinks, it drives the upper movable plate 13 of the airbag to move toward the lower positioning plate 11 of the airbag. When the upper movable plate 13 of the airbag moves to a certain position, one side of the airbag abuts against the lower positioning plate 11 of the airbag through the supporting portion 14 and stops moving. The other side of the upper movable plate 13 of the airbag continues to move and tilts toward the bag inlet 6, thereby driving the pressing plate 4 to tilt toward the bag inlet 6.

[0029] An upper plate clamping portion 15 is provided on the upper movable plate 13 of the airbag, an air inlet 16 and a lower plate clamping portion 20 are provided on the lower positioning plate 11 of the airbag, a pressure plate clamping portion 17 is provided on the pressing plate 4, and an airbag base clamping portion 21 is provided on the airbag base 10. The upper plate clamping portion 15 and the pressure plate clamping portion 17 are clamped and matched with each other, and the lower plate clamping portion 20 and the airbag base clamping portion 21 are clamped and matched with each other. The lower positioning plate 11 of the airbag is connected to the air pipe through the air inlet 16 and is connected with the driving cylinder 5.

[0030] In this embodiment, the upper movable plate 13 of the airbag and the pressing plate 4 are clamped and fixed by the cooperation of the upper plate clamping portion 15 and the pressure plate clamping portion 17, and the lower positioning plate 11 of the airbag and the airbag base 10 are clamped and fixed by the cooperation of the lower plate clamping portion 20 and the airbag base clamping portion 21. At the same time, since the airbag 12 is sealed with the lower positioning plate 11 and the upper movable plate 13 of the airbag respectively, the driving cylinder 5 can extract the air inside the airbag 12 or inflate the inside of the airbag 12 through the cooperation of the air pipe and the air inlet 16.

[0031] A movable guide portion 18 is provided on the airbag base 10, and a movable guide matching portion 19 is provided on the airbag upper movable plate 13. The movable guide matching portion 19 guides the movable plate 13 to move on the movable guide portion 18. By utilizing the guided movable matching between the movable guide matching portion 19 and the movable guide portion 18, the airbag upper movable plate 13 can be stably moved on the airbag base 10.

[0032] The shell includes an outer shell 22 and a base plate 23. The base plate 23 is fixedly arranged at the bottom of the outer shell 22. The airbag transmission assembly A and the driving cylinder 5 are respectively arranged on the base plate 23. A vacuum pump 24 is also arranged on the base plate 23. A vent 25 is provided on the pressing plate cavity 8, and the air pipe is connected through the vent 25 and is connected to the vacuum pump 24.

[0033] In this embodiment, when the vacuum pump 24 is working, it can extract the air inside the pressing plate cavity 8 and the front box body cavity 3 through the cooperation of the air pipe and the vent 25, thereby achieving vacuum inside the plastic bag.

[0034] A reset elastic member 26 is provided on the bottom plate 23 in a direction close to the bag inlet 6 , and the bottom plate 23 is elastically matched with the pressing plate 4 through the reset elastic member 26 .

[0035] In this embodiment, the reset elastic member 26 is a spring, one end of which elastically acts on the side of the bottom plate 23 close to the bag inlet 6, and the other end elastically acts on the side of the pressing plate 4 close to the bag inlet 6, so that the pressing plate 4 can automatically and elastically reset to the initial position to ensure stable use of the sealing machine.

[0036] The notch is provided on the front side of the bottom plate 23 and / or the outer shell 22, and the left and right ends thereof are respectively provided with front and rear pointing guide rails 27, the rear side wall is provided with a snap-fitting portion 28, the left and right ends of the front box body 1 are respectively provided with open guide grooves 29, and the front side wall is provided with a snap-fitting portion 30. The front box body 1 is disassembled and assembled on the notch through the matching guidance of the open guide grooves 29 and the guide rails 27, and is snap-fitted with the snap-fitting portion 28 through the snap-fitting portion 30 during assembly.

[0037] In this embodiment, notches are provided on the front sides of the bottom plate 23 and the outer shell 22. The front box body 1 can be guided and disassembled on the notch by the cooperation of the open guide groove 29 and the guide rail 27. At the same time, the front box body 1 is firmly assembled on the notch by the cooperation of the snap-fitting part 30 and the snap-fitting part 28 during assembly. Not only is disassembly and assembly convenient and the assembly is stable, but it is also convenient for daily maintenance.

[0038] An electric control box 31 is provided on the base plate 23 , and the electric control box 31 is electrically connected to the driving cylinder 5 , the heating element 7 , and the vacuum pump 24 , respectively. The electric control box 31 can be used to control the working states of the driving cylinder 5 , the heating element 7 , and the vacuum pump 24 .

[0039] In order to facilitate user use, a control knob is also provided on the base plate 23, and the control knob is electrically connected to the electrical control box 31. The user can control the working status of the driving cylinder 5, the heating element 7, and the vacuum pump 24 through the cooperation of the control knob and the electrical control box 31.

[0040] The outer shell 22 is further provided with a connecting groove 32 , on which a knife groove member 33 is movably provided. A cutting knife 34 is movably provided on the knife groove member 33 .

[0041] In this embodiment, the knife groove member 33 is rotated and moved on the connecting groove 32 by the rotating shaft. After the bag opening of the plastic bag is hot-melt sealed, the plastic bag can be placed between the connecting groove 32 and the knife groove member 33, and the excess part of the plastic bag can be cut by driving the cutting knife 34, which provides a good user experience.

[0042] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic sealing structure of a sealing machine, comprising a housing, characterized in that: The front side of the shell is provided with a notch, a front box body (1) is provided on the notch, a front box body strip (2) and a front box body cavity (3) are provided on the front box body (1), a pressing plate (4), an airbag transmission assembly (A), and a driving cylinder (5) are also provided on the shell, the pressing plate (4) extends in the direction of the notch, and a bag entrance (6) for inserting a plastic bag is formed between the pressing plate (4) and the front box body (1), the pressing plate (4) is provided with a heating element (7) corresponding to the front box body strip (2), a pressing plate cavity (8) corresponding to the front box body cavity (3), and the pressing plate cavity ( 8) or a sealing member (9) is provided on the periphery of the front box body concave cavity (3), the airbag transmission component (A) is cooperatively connected with the driving cylinder (5) and is drivingly connected with the pressing plate (4), the airbag transmission component (A) is tilted and contracted toward the bag inlet (6) by the suction of the driving cylinder (5), and drives the pressing plate (4) to tilt toward the bag inlet (6), and drives the heating element (7) to tilt and press onto the front box body strip (2), and the pressing plate concave cavity (8) and the front box body concave cavity (3) are tilted, sealed and pressed together by the sealing member (9).

2. The pneumatic sealing structure of the sealing machine according to claim 1, characterized in that: The airbag transmission assembly (A) includes an airbag base (10), an airbag lower positioning plate (11), an airbag (12), and an airbag upper movable plate (13), wherein the airbag base (10) is fixedly arranged on the shell, the airbag lower positioning plate (11) is fixedly arranged on the airbag base (10), the bottom of the airbag (12) is sealedly connected to the airbag lower positioning plate (11), and the top is sealedly connected to the airbag upper movable plate (13), and the airbag upper movable plate (13) is drivingly connected to the pressing plate (4).

3. The pneumatic sealing structure of the sealing machine according to claim 2, characterized in that: The upper movable plate (13) of the airbag or the lower positioning plate (11) of the airbag is provided with a supporting portion (14) on the side away from the bag inlet (6). When the airbag (12) contracts, the upper movable plate (13) of the airbag is driven to move toward the lower positioning plate (11). When the upper movable plate (13) of the airbag moves to a certain position, one side of the upper movable plate and the lower positioning plate (11) of the airbag are in contact with each other through the supporting portion (14), and the other side is inclined toward the bag inlet (6).

4. The pneumatic sealing structure of the sealing machine according to claim 3, characterized in that: The upper movable plate (13) of the airbag is provided with an upper plate clamping portion (15), the lower positioning plate (11) of the airbag is provided with an air inlet (16) and a lower plate clamping portion (20), the pressing plate (4) is provided with a pressure plate clamping portion (17), and the airbag base (10) is provided with an airbag base clamping portion (21), the upper plate clamping portion (15) and the pressure plate clamping portion (17) are mutually clamped and matched, the lower plate clamping portion (20) and the airbag base clamping portion (21) are mutually clamped and matched, and the lower positioning plate (11) of the airbag is connected to the air pipe through the air inlet (16) and is connected to the driving cylinder (5).

5. The pneumatic sealing structure of the sealing machine according to claim 3, characterized in that: A movable guide portion (18) is provided on the airbag base (10), and a movable guide matching portion (19) is provided on the airbag upper movable plate (13), and the movable guide matching portion (19) guides the movable guide portion (18) to move.

6. The pneumatic sealing structure of the sealing machine according to claim 1, characterized in that: The shell comprises an outer shell (22) and a bottom plate (23), wherein the bottom plate (23) is fixedly arranged at the bottom of the outer shell (22), the airbag transmission assembly (A) and the driving cylinder (5) are respectively arranged on the bottom plate (23), and a vacuum pump (24) is also arranged on the bottom plate (23), and a vent (25) is provided on the pressing plate cavity (8), and the vent (25) is connected to the air pipe and is connected to the vacuum pump (24).

7. The pneumatic sealing structure of the sealing machine according to claim 6, characterized in that: The bottom plate (23) is provided with a reset elastic member (26) in a direction close to the bag inlet (6), and is elastically matched with the pressing plate (4) through the reset elastic member (26).

8. The pneumatic sealing structure of the sealing machine according to claim 6, characterized in that: The notch is provided on the front side of the bottom plate (23) and / or the housing (22), and the left and right ends thereof are respectively provided with guide rails (27) pointing forward and backward, and the rear side wall is provided with a buckling portion (28). The left and right ends of the front box body (1) are respectively provided with open guide grooves (29), and the front side wall is provided with a buckling fitting portion (30). The front box body (1) is assembled and disassembled on the notch through the matching guidance of the open guide grooves (29) and the guide rails (27), and is buckled and fitted with the buckling fitting portion (28) through the buckling fitting portion (30) during assembly.

9. The pneumatic sealing structure of the sealing machine according to claim 6, characterized in that: An electric control box (31) is provided on the base plate (23), and the electric control box (31) is electrically connected to the driving cylinder (5), the heating element (7), and the vacuum pump (24), respectively.

10. The pneumatic sealing structure of the sealing machine according to claim 6, characterized in that: A connecting groove (32) is further provided on the surface of the shell (22), a knife groove member (33) is movably provided on the connecting groove (32), and a cutting knife (34) is movably provided on the knife groove member (33).

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