Negative pressure buckling structure of vacuumizing plastic packaging machine

Abstract

The utility model discloses a negative pressure buckling structure of a vacuum-pumping plastic packaging machine, which belongs to the technical field of vacuum-pumping plastic packaging machines, and comprises an upper shell component, a lower shell component and a negative pressure buckling device, the negative pressure buckling device comprises a movable seat, a telescopic bag and a base, the movable seat and the base are respectively connected with the upper shell component and the lower shell component in a matched manner, the telescopic bag is annular, and the telescopic bag is provided with an opening. The upper end of the telescopic bag is closed and provided with an upper sealing top, the lower end of the telescopic bag is open and provided with a lower connecting port, the telescopic bag is connected with the movable seat in a matched mode through the upper sealing top, the telescopic bag is connected with the base in a matched mode through the lower connecting port, a telescopic cavity is formed between the telescopic bag and the base, the base is provided with a suction part, the suction part is communicated with the telescopic cavity, and the suction part is communicated with a suction device. According to the structure, the upper sealing top is integrally sealed at the upper end of the telescopic bag, so that effective sealing matching connection can be formed between the upper sealing top and the movable seat, air is prevented from entering and exiting the telescopic cavity randomly, normal telescopic work of the telescopic cavity is ensured, and the opening and closing stability of the upper shell assembly and the lower shell assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum laminators, in particular to a negative pressure buckling structure of a vacuum laminator. Background Art

[0002] The utility model patent with Chinese patent number CN202020761452.2 discloses a negative pressure buckle device and a vacuum laminator, wherein the telescopic bag is an annular body penetrating from top to bottom, with a first folded edge provided at the upper end, and a second folded edge extending downward on the side of the first folded edge away from the side wall of the telescopic bag. A sealing plate convex ring matching the first sealing groove is provided on the side where the first sealing plate is connected to the floating seat, the upper end face of the sealing plate convex ring abuts the first folded edge, the outer periphery of the sealing plate convex ring abuts the inner wall of the telescopic bag, and the inner periphery of the sealing plate convex ring abuts the second folded edge, so that the side wall of the telescopic bag, the first folded edge and the second folded edge are elastically deformed and fixed in the first sealing groove.

[0003] However, the provision of the first and second folds increases the processing cost and molding difficulty of the bellows. Furthermore, although the sealing plate convex ring abuts the first fold, bellows, and second folds, gaps still exist between their adjacent mating locations, allowing air to enter and exit the bellows through these gaps, preventing the bellows from expanding and contracting properly and thus affecting the opening and closing stability of the vacuum laminator. Therefore, further improvements are necessary. Utility Model Content

[0004] The utility model aims to provide a negative pressure buckling structure of a vacuum laminator to overcome the deficiencies in the prior art.

[0005] A negative pressure buckling structure of a vacuum laminator designed for this purpose includes an upper shell assembly, a lower shell assembly, and a negative pressure buckling device. The negative pressure buckling device includes a movable seat, a telescopic bag, and a base, wherein the movable seat and the base are respectively connected to the upper shell assembly and the lower shell assembly. The telescopic bag is annular, the upper end of which is closed and provided with an upper sealing top, and the lower end is open and provided with a lower connecting port. The telescopic bag is connected to the movable seat through the upper sealing top, and the telescopic bag is connected to the base through the lower connecting port, and a telescopic cavity is formed between the two. A suction part is provided on the base, and the suction part is connected to the telescopic cavity, and a suction device is connected thereto.

[0006] A fixed plate is provided on the telescopic bag, a plurality of movable holes are provided on the movable seat, a plurality of sealing through holes are provided on the upper sealing top, and a plurality of fixed through holes are provided on the fixed plate. The movable holes, the sealing through holes, and the fixed through holes correspond to each other and are fixed to each other by fixing parts.

[0007] The fixed plate is located inside the telescopic bag, and the top surface of the fixed plate and the bottom surface of the upper sealing top rely on each other, and the top surface of the upper sealing top and the bottom surface of the movable seat rely on each other.

[0008] A movable seat limiting edge extends from the bottom surface of the movable seat, and the movable seat limiting edge is spaced apart from and matched with the periphery of the fixed plate to form a limiting groove, and the periphery of the telescopic bag is at least partially limited in the limiting groove.

[0009] A positioning ring is provided on the telescopic bag, and a lower connecting flange is provided on the lower connecting port. The positioning ring is pressed on the lower connecting flange and fixed to the base by fixing parts, buckles, adhesion, or any combination of the above.

[0010] A positioning ring groove is provided on the base, and the lower connecting flange is positioned on the positioning ring groove by pressing the positioning ring.

[0011] The positioning ring is located at the periphery of the telescopic bag and is provided with a plurality of positioning holes and positioning buckles. The lower connecting flange is provided with a plurality of flange through-holes and flange buckles. The positioning ring groove is provided with a plurality of ring groove through-holes. The base is provided with a plurality of first base buckles. The positioning holes, the flange through-holes and the ring groove through-holes correspond to each other and are fixed to each other by fixing parts. The first base buckle is buckled on the flange buckle and the positioning buckle.

[0012] The fixing plate is provided with a guide portion, and the base is provided with a guide matching portion. The guide portion and the guide matching portion correspond to each other, and an elastic member is provided between the two. The elastic member is elastically connected to the fixing plate and the base respectively.

[0013] The guide portion is arranged on the bottom surface of the fixed plate and protrudes toward the base. The top surface of the base is provided with a base recessed hole. The guide matching portion is arranged on the base recessed hole and protrudes toward the fixed plate. The elastic member is a compression spring and is positioned and sleeved on the guide portion and the guide matching portion.

[0014] The top surface of the movable seat is provided with a movable seat buckle, and the bottom surface extends a limiting protrusion toward the base. When the movable seat is movable, the limiting protrusion acts on the base through the limiting protrusion. The bottom surface of the base is provided with a second base buckle, the upper shell assembly is provided with an upper shell buckling part, and the lower shell assembly is provided with a lower shell buckling part. The movable seat buckle is buckled on the upper shell buckling part, and the second base buckle is buckled on the lower shell buckling part.

[0015] The upper shell assembly is further provided with an upper vacuum groove and an upper heating component located on one side of the upper vacuum groove. An upper sealing rubber ring is provided on the periphery of the upper vacuum groove.

[0016] The lower shell assembly is further provided with a lower vacuum groove and a lower heating component located on one side of the lower vacuum groove. A lower sealing rubber ring is provided on the periphery of the lower vacuum groove.

[0017] The suction device is provided on the upper shell assembly or the lower shell assembly and is communicated with the suction portion, the lower vacuum groove or the upper vacuum groove.

[0018] Since the upper end of the telescopic bag of the present invention is integrally sealed with an upper sealing top, the upper sealing top of the upper end of the telescopic bag can form an effective sealing connection with the movable seat when the telescopic bag is assembled, thereby effectively reducing the gap between the telescopic bag and the movable seat to prevent air from entering and exiting the telescopic cavity at will, ensuring that the telescopic cavity can work normally, and improving the opening and closing stability between the upper shell assembly and the lower shell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the present invention from another perspective.

[0022] Figure 4 This is a schematic diagram of the assembly cross-sectional structure of the negative pressure fastening device.

[0023] Figure 5 This is a schematic diagram of the exploded structure of the negative pressure fastening device.

[0024] Figure 6 This is a schematic diagram of the decomposed structure of the negative pressure fastening device from another perspective. DETAILED DESCRIPTION

[0025] 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.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See also Figures 1-6The negative pressure buckling structure of the vacuum laminator includes an upper shell assembly 1, a lower shell assembly 2, and a negative pressure buckling device. The negative pressure buckling device includes a movable seat 3, a telescopic bag 4, and a base 5. Among them, the movable seat 3 and the base 5 are respectively connected with the upper shell assembly 1 and the lower shell assembly 2. The telescopic bag 4 is annular, the upper end of which is closed and provided with an upper sealing top 4.1, the lower end is open and provided with a lower connecting port 4.2, the telescopic bag 4 is connected with the movable seat 3 through the upper sealing top 4.1, and the telescopic bag 4 is connected with the base 5 through the lower connecting port 4.2, and a telescopic cavity 4.3 is formed between the two. A suction part 5.1 is provided on the base 5, and the suction part 5.1 is connected with the telescopic cavity 4.3, and a suction device 6 is connected thereto.

[0028] In this embodiment, since the upper end of the telescopic bag 4 is integrally sealed with an upper sealing top 4.1, when the telescopic bag 4 is assembled, the upper sealing top 4.1 at its upper end can form an effective sealing connection with the movable seat 3, thereby effectively reducing the gap between the telescopic bag 4 and the movable seat 3 to prevent air from entering and exiting the telescopic cavity 4.3 at will, ensuring that the telescopic cavity 4.3 can work normally and improving the opening and closing stability between the upper shell assembly 1 and the lower shell assembly 2.

[0029] A fixed plate 7 is provided on the telescopic bag 4, a plurality of movable holes 3.1 are provided on the movable seat 3, a plurality of sealing through holes 4.7 are provided on the upper sealing top 4.1, and a plurality of fixed through holes 7.1 are provided on the fixed plate 7. The movable holes 3.1, the sealing through holes 4.7, and the fixed through holes 7.1 correspond to each other and are fixed to each other by fixing parts.

[0030] In this embodiment, a plurality of movable holes 3.1, a plurality of sealing through holes 4.7, and a plurality of fixed through holes 7.1 are arranged at intervals, and a common fixing member is used to fix the movable holes 3.1, the sealing through holes 4.7, and the fixed through holes 7.1, thereby achieving mutual fixation between the movable seat 3, the telescopic bag 4, and the fixed plate 7.

[0031] The fixed plate 7 is located inside the telescopic bag 4, and its top surface is mutually dependent on the bottom surface of the upper sealing top 4.1, and the top surface of the upper sealing top 4.1 is mutually dependent on the bottom surface of the movable seat 3. In this way, an effective seal is achieved between the movable seat 3, the telescopic bag 4, and the fixed plate 7, preventing air from entering and exiting the telescopic cavity 4.3 through the position between the movable seat 3, the telescopic bag 4, and the fixed plate 7.

[0032] A movable seat limiting edge 3.2 extends from the bottom surface of the movable seat 3. The movable seat limiting edge 3.2 is spaced apart from and matched with the periphery of the fixed plate 7 to form a limiting groove. At least part of the periphery of the telescopic bag 4 is limited in the limiting groove.

[0033] In this embodiment, the outer periphery of the upper side of the telescopic bag 4 is at least partially limited in the limiting groove. At the same time, the outer end surface of the upper side of the telescopic bag 4 and the limiting edge 3.2 of the movable seat rely on each other, and the inner end surface of the upper side of the telescopic bag 4 and the outer periphery of the fixed plate 7 rely on each other, which not only ensures the assembly stability between the movable seat 3, the telescopic bag 4, and the fixed plate 7, but also further improves the sealing between the movable seat 3, the telescopic bag 4, and the fixed plate 7.

[0034] A positioning ring 8 is provided on the telescopic bag 4, and a lower connecting flange 4.4 is provided on the lower connecting port 4.2. The positioning ring 8 is pressed on the lower connecting flange 4.4 and fixed to the base 5 by fixing parts, buckles, adhesion, or any combination of the above.

[0035] This embodiment uses a positioning ring 8 to press the lower connecting flange 4.4, and then uses fixing parts, buckles, adhesives, or any combination of the above to achieve the fixation between the telescopic bag 4 and the base 5. Not only is the structure simple and reasonable, but the assembly is also convenient and stable.

[0036] A positioning ring groove 5.2 is provided on the base 5, and the lower connecting flange 4.4 is positioned on the positioning ring groove 5.2 by pressing the positioning ring 8.

[0037] In this embodiment, the provision of the positioning ring groove 5.2 can effectively position the lower connecting flange 4.4, so as to avoid the problem of difficulty in assembling the telescopic bag 4 due to the inability to position the lower connecting flange 4.4 during assembly, thereby improving the convenience of assembling the telescopic bag 4. At the same time, after the lower connecting flange 4.4 is positioned on the positioning ring groove 5.2 by the positioning ring 8, an effective seal can be formed between the telescopic bag 4 and the base 5 at this time, preventing air from entering and exiting the telescopic cavity 4.3 through the position between the expansion positioning ring 8, the contraction bag 4, and the base 5.

[0038] The positioning ring 8 is located on the periphery of the telescopic bag 4 and is provided with a plurality of positioning holes 8.1 and a positioning buckle portion 8.2. The lower connecting flange 4.4 is provided with a plurality of flange through-holes 4.5 and a flange buckle portion 4.6. The positioning ring groove 5.2 is provided with a plurality of ring groove through-holes 5.3. The base 5 is provided with a plurality of first base buckles 5.4. The positioning holes 8.1, the flange through-holes 4.5, and the ring groove through-holes 5.3 correspond to each other and are fixed to each other by fixing parts. The first base buckle 5.4 is buckled on the flange buckle portion 4.6 and the positioning buckle portion 8.2.

[0039] In this embodiment, a plurality of positioning holes 8.1, a plurality of positioning buckling portions 8.2, a plurality of flange through-holes 4.5, a plurality of flange buckling portions 4.6, a plurality of annular groove through-holes 5.3, and a plurality of first base buckles 5.4 are arranged at intervals, and a common fixing member is used to fix the positioning holes 8.1, the flange through-holes 4.5, and the annular groove through-holes 5.3. The first base buckle 5.4 is then buckled on the flange buckling portion 4.6 and the positioning buckling portion 8.2 at the same time, thereby effectively achieving mutual fixation between the positioning ring 8, the shrinkage capsule 4, and the base 5.

[0040] The fixing plate 7 is provided with a guide portion 7.2, and the base 5 is provided with a guide matching portion 5.5. The guide portion 7.2 and the guide matching portion 5.5 correspond to each other, and an elastic member 9 is provided therebetween. The elastic member 9 is elastically connected to the fixing plate 7 and the base 5 respectively.

[0041] In this embodiment, the movable seat 3 and the base 5 can achieve guiding cooperation through the guide part 7.2 and the guide cooperation part 5.5 when opening and closing. At the same time, the setting of the elastic member 9 can enable the movable seat 3 and the base 5 to move away from each other without the action of external force.

[0042] The guide portion 7.2 is provided on the bottom surface of the fixed plate 7 and protrudes toward the base 5. The top surface of the base 5 is provided with a base recessed hole 5.6. The guide mating portion 5.5 is provided on the base recessed hole 5.6 and protrudes toward the fixed plate 7. The elastic member 9 is a compression spring and is positioned and sleeved on the guide portion 7.2 and the guide mating portion 5.5.

[0043] In this embodiment, the elastic member 9 is positioned and sleeved on the guide portion 7.2 and the guide matching portion 5.5, and one end of the elastic member is also positioned on one of the fixed through holes 7.1, and the other end is also positioned on the base recessed hole 5.6, thereby ensuring that the elastic member 9 can be effectively assembled.

[0044] The top surface of the movable seat 3 is provided with a movable seat buckle 3.3, and the bottom surface is extended with a limiting protrusion 3.4 toward the base 5. When the movable seat 3 moves, the limiting protrusion 3.4 acts on the base 5 to limit the closing distance between the movable seat 3 and the base 5.

[0045] A second base buckle 5.7 is provided on the bottom surface of the base 5, an upper shell buckle portion 1.1 is provided on the upper shell assembly 1, and a lower shell buckle portion 2.1 is provided on the lower shell assembly 2. The movable seat buckle 3.3 is buckled on the upper shell buckle portion 1.1, and the second base buckle 5.7 is buckled on the lower shell buckle portion 2.1, thereby realizing the assembly between the movable seat 3 and the upper shell assembly 1, and between the base 5 and the lower shell assembly 2.

[0046] The upper shell assembly 1 is further provided with an upper vacuum groove 1.2, an upper heating component 1.3 located on one side of the upper vacuum groove 1.2, and an upper sealing rubber ring 1.4 is provided on the periphery of the upper vacuum groove 1.2.

[0047] The lower shell assembly 2 is further provided with a lower vacuum groove 2.2, a lower heating component 2.3 located on one side of the lower vacuum groove 2.2, and a lower sealing rubber ring 2.4 is provided on the periphery of the lower vacuum groove 2.2.

[0048] The suction device 6 is arranged on the upper shell component 1 or the lower shell component 2, and is communicated with the suction part 5.1, the lower vacuum groove 2.2 or the upper vacuum groove 1.2.

[0049] In this embodiment, the suction device 6 is provided on the lower shell assembly 2 and is in communication with the suction portion 5.1 and the lower vacuum groove 2.2 to suck air from the telescopic cavity 4.3.

[0050] 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 negative pressure buckling structure of a vacuum laminator, comprising an upper shell assembly (1), a lower shell assembly (2), and a negative pressure buckling device, characterized in that: The negative pressure fastening device comprises a movable seat (3), a telescopic bag (4), and a base (5), wherein the movable seat (3) and the base (5) are respectively connected to the upper shell component (1) and the lower shell component (2); the telescopic bag (4) is annular, the upper end of which is closed and provided with an upper sealing top (4.1), and the lower end is open and provided with a lower connecting port (4.2); the telescopic bag (4) is connected to the movable seat (3) through the upper sealing top (4.1); the telescopic bag (4) is connected to the base (5) through the lower connecting port (4.2), and a telescopic cavity (4.3) is formed between the two; a suction portion (5.1) is provided on the base (5); the suction portion (5.1) is communicated with the telescopic cavity (4.3), and a suction device (6) is communicated therewith.

2. The negative pressure buckling structure of the vacuum laminator according to claim 1, characterized in that: The telescopic bag (4) is provided with a fixed plate (7), the movable seat (3) is provided with a plurality of movable holes (3.1), the upper sealing top (4.1) is provided with a plurality of sealing through holes (4.7), and the fixed plate (7) is provided with a plurality of fixed through holes (7.1). The movable holes (3.1), the sealing through holes (4.7), and the fixed through holes (7.1) correspond to each other and are fixed to each other by fixing members.

3. The negative pressure buckling structure of the vacuum laminator according to claim 2, characterized in that: The fixed plate (7) is located inside the telescopic bag (4), and its top surface and the bottom surface of the upper sealing top (4.1) are mutually dependent, and the top surface of the upper sealing top (4.1) and the bottom surface of the movable seat (3) are mutually dependent.

4. The negative pressure buckling structure of the vacuum laminator according to claim 3, characterized in that: A movable seat limiting edge (3.2) extends from the bottom surface of the movable seat (3), and the movable seat limiting edge (3.2) is spaced apart from and matched with the periphery of the fixed plate (7) to form a limiting groove, and the periphery of the telescopic bag (4) is at least partially limited in the limiting groove.

5. The negative pressure buckling structure of the vacuum laminator according to claim 1, characterized in that: A positioning ring (8) is provided on the telescopic bag (4), a lower connecting flange (4.4) is provided on the lower connecting port (4.2), the positioning ring (8) is pressed onto the lower connecting flange (4.4), and is fixed to the base (5) by means of a fixing piece, a buckle, an adhesive, or any combination thereof.

6. The negative pressure buckling structure of the vacuum laminator according to claim 5, characterized in that: A positioning ring groove (5.2) is provided on the base (5), and the lower connecting flange (4.4) is positioned on the positioning ring groove (5.2) by pressing the positioning ring (8).

7. The negative pressure buckling structure of the vacuum laminator according to claim 6, characterized in that: The positioning ring (8) is located on the periphery of the telescopic bag (4) and is provided with a plurality of positioning holes (8.1) and positioning buckling parts (8.2); the lower connecting flange (4.4) is provided with a plurality of flange through-holes (4.5) and flange buckling parts (4.6); the positioning ring groove (5.2) is provided with a plurality of ring groove through-holes (5.3); the base (5) is provided with a plurality of first base buckles (5.4); the positioning holes (8.1), the flange through-holes (4.5), and the ring groove through-holes (5.3) correspond to each other and are fixed to each other by a fixing member; the first base buckle (5.4) is buckled on the flange buckling part (4.6) and the positioning buckling part (8.2).

8. The negative pressure buckling structure of the vacuum laminator according to claim 2, characterized in that: A guide portion (7.2) is provided on the fixed plate (7), and a guide matching portion (5.5) is provided on the base (5); the guide portion (7.2) and the guide matching portion (5.5) correspond to each other, and an elastic member (9) is provided between the two; the elastic member (9) is elastically connected to the fixed plate (7) and the base (5), respectively.

9. The negative pressure buckling structure of the vacuum laminator according to claim 8, characterized in that: The guide portion (7.2) is arranged on the bottom surface of the fixed plate (7) and protrudes toward the base (5); a base recess (5.6) is provided on the top surface of the base (5); the guide matching portion (5.5) is arranged on the base recess (5.6) and protrudes toward the fixed plate (7); and the elastic member (9) is a compression spring and is positioned and sleeved on the guide portion (7.2) and the guide matching portion (5.5).

10. The negative pressure buckling structure of the vacuum laminator according to claim 1, characterized in that: The top surface of the movable seat (3) is provided with a movable seat buckle (3.3), and the bottom surface extends a limiting convex column (3.4) toward the base (5). When the movable seat (3) is movable, the limiting convex column (3.4) acts on the base (5). The bottom surface of the base (5) is provided with a second base buckle (5.7). The upper shell assembly (1) is provided with an upper shell buckling portion (1.1), and the lower shell assembly (2) is provided with a lower shell buckling portion (2.1). The movable seat buckle (3.3) is buckled on the upper shell buckling portion (1.1), and the second base buckle (5.7) is buckled on the lower shell buckling portion (2.1). The upper shell assembly (1) is further provided with an upper vacuum groove (1.2) and an upper heating component (1.3) located on one side of the upper vacuum groove (1.2); an upper sealing rubber ring (1.4) is provided on the periphery of the upper vacuum groove (1.2); The lower shell assembly (2) is further provided with a lower vacuum groove (2.2) and a lower heating component (2.3) located on one side of the lower vacuum groove (2.2); a lower sealing rubber ring (2.4) is provided on the periphery of the lower vacuum groove (2.2); The suction device (6) is arranged on the upper shell component (1) or the lower shell component (2), and is in communication with the suction portion (5.1), the lower vacuum groove (2.2) or the upper vacuum groove (1.2).

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