Rapid vacuum inflation structure for thermoforming packaging

Abstract

The utility model relates to the technical field of thermoforming packaging, and discloses a rapid vacuum inflation structure for thermoforming packaging, which comprises a working table, a placing groove is arranged on the top end face of the working table, and a packaging component is arranged on the top end face of the working table. According to the rapid vacuum inflation structure for thermal forming packaging, integrated operation of air exhaust, heat sealing and cutting is achieved, manual intervention is reduced, the production efficiency is improved, meanwhile, operation errors are reduced, the air exhaust hole is located between packaging boxes, the problem that sealing is not tight possibly due to the fact that holes are formed in the two sides of a packaging material is solved, and the packaging quality is improved. Due to the design of the air exhaust holes, the heat sealing process is more complete, the sealing performance of packaging and the fresh-keeping effect of products are guaranteed, the containing grooves are connected into an integral air channel through the communicating grooves and the connecting grooves, air in the packaging box can be evenly exhausted through the air exhaust needles, and insufficient local air exhaust is avoided.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming packaging technology, specifically to a rapid vacuum inflation structure for thermoforming packaging. Background Technology

[0002] Thermoforming packaging is an advanced packaging technology that uses thermoforming packaging machines to process thermoplastic sheet packaging materials. First, the material is softened by heating, and then it is formed by deep drawing, stretching, and other shaping processes using molds to create packaging containers of specific shapes, such as trays and blister packs. The formed containers then enter the filling stage, where the product is accurately placed into the container. Finally, a sealing process is used to seal another film or sheet to the container, ensuring the safety and freshness of the product.

[0003] However, in the actual sealing process of the above-mentioned packaging containers, the conventional method is to set air holes on both sides of the packaging material to achieve the vacuum and inflation process. However, this method has obvious limitations, namely, the vacuum rate is slow and the inflation uniformity is difficult to guarantee. Especially when dealing with large-sized or multi-cavity molds, it is often difficult to achieve the ideal vacuum degree or modified atmosphere effect. In view of this, we propose a rapid vacuum inflation structure for thermoforming packaging. Utility Model Content

[0004] The purpose of this invention is to provide a rapid vacuum inflation structure for thermoforming packaging to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid vacuum inflation structure for thermoforming packaging, comprising a worktable, a placement groove formed on the top end face of the worktable, and a packaging assembly disposed on the top end face of the worktable, the packaging assembly comprising:

[0006] The frame is fixedly connected to the top end face of the workbench. An electric push rod is fixedly connected to the inner top surface of the frame. A mounting bracket is fixedly connected to the output end of the electric push rod. A vertical rod is fixedly connected to the bottom end face of the mounting bracket. A connecting bracket is fixedly connected to the bottom end of the vertical rod.

[0007] A cutting blade, wherein a fixing frame is fixedly connected to the outer wall of the cutting blade, and the fixing frame is fixedly connected to the inner wall of the connecting frame;

[0008] An air extraction needle, the top end of which is fixedly connected to a cavity, the bottom end face of which is fixedly connected to a telescopic rod, the bottom end of which is fixedly connected to the top end face of a fixing frame;

[0009] The top end face of the heat-sealing frame is fixedly connected with a mounting plate, the top end face of the mounting plate is fixedly connected with an elastic piece, and the top end of the elastic piece is fixedly connected to the inner top face of the fixed frame.

[0010] Preferably, the side wall of the cavity is fixedly connected with an air inlet pipe, the side wall of the cavity is fixedly connected with an air outlet pipe, the air inlet pipe is fixedly connected with an external air tank, and the air outlet pipe is fixedly connected with an external vacuum pump.

[0011] Preferably, the top end face of the workbench is fixedly connected with a positioning block, the top end face of the workbench is provided with a communication groove, and the top end face of the workbench is provided with a connecting groove.

[0012] Preferably, the top end face of the workbench is provided with a film, the top end face of the film is provided with a positioning hole, and the top end face of the film is provided with an air extraction hole.

[0013] Preferably, the top end face of the mounting plate is fixedly connected with a heater, the side wall of the heater is fixedly connected with an electric wire, and the electric wire is electrically connected with an external power supply line.

[0014] Preferably, the connecting frame is sleeved with a movable column, the bottom end face of the movable column is fixedly connected with a pressing frame, and the side wall of the movable column is sleeved with a spring.

[0015] Preferably, the top of the movable column is fixedly connected with a baffle, one end of the spring is fixedly connected with the baffle, and the other end of the spring is fixedly connected with the connecting frame.

[0016] Compared with the prior art, the utility model provides a kind of for thermoforming package rapid vacuum inflation structure, with following beneficial effects:

[0017] 1. The structure for the rapid vacuum air filling of the thermoforming package, by the setting of the packaging assembly, realizes the integrated operation of air extraction, heat sealing and cutting, reduces the manual intervention, improves the production efficiency, simultaneously reduces the operation error, the air extraction hole is located between the packaging boxes, avoids the problem of the sealing not being tight possibly caused by the hole opening on both sides of the packaging material, the design of the air extraction hole makes the heat sealing process more complete, ensures the sealing performance of the package and the product preservation effect, the communication groove and the connecting groove connect each placing groove into an integral air passage, so that the air extraction needle can uniformly extract the air in the packaging box, avoids the residual air in the packaging due to the insufficient local air extraction, and uniformly fills the preservation gas into the packaging box, can ensure that the inside of each packaging box meets the same requirements, thereby improving the product preservation effect, avoiding the situation of uneven local pressure, making the heat sealing process more stable and accurate, ensuring the sealing performance and overall quality of the package.

[0018] 2. The structure for the rapid vacuum air filling of the thermoforming package, by the setting of the lower pressing frame and the spring, ensures that there is no air leakage phenomenon in the air extraction and air filling process, thereby ensuring that the packaging box can realize the real vacuum state and be filled with preservation gas, the preservation gas can be uniformly and stably filled into the packaging box, prolongs the shelf life of the product and maintains the freshness of the product, improves the production efficiency and product consistency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the film covering structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the workbench structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the A area structure of the utility model; Figure 3

[0023] Figure 5 It is a schematic diagram of the packaging assembly structure of the utility model;

[0024] Figure 6 It is a schematic diagram of the lower pressing frame structure of the utility model;

[0025] Figure 7 It is an exploded view of the packaging assembly of the utility model;

[0026] Figure 8 It is a bottom view of the packaging assembly of the utility model.

[0027] ​In the figure: 1, workbench; 2, placing groove; 3, packaging assembly; 301, frame body; 302, electric push rod; 303, mounting frame; 304, vertical rod; 305, connecting frame; 306, fixing frame; 307, cutting knife; 308, telescopic rod; 309, cavity; 310, air extraction needle; 311, elastic piece; 312, mounting plate; 313, heat sealing frame; 4, positioning block; 5, communication groove; 6, connecting groove; 7, film; 8, positioning hole; 9, air extraction hole; 10, air inlet pipe; 11, air outlet pipe; 14, movable column; 15, pressing frame; 16, spring. DETAILED DESCRIPTION

[0028] As Figures 1-8 shown, the utility model provides a technical scheme: a kind of for thermoforming package rapid vacuum inflation structure, including workbench 1, the top end surface of workbench 1 is equipped with placing groove 2, the top end surface of workbench 1 is provided with packaging assembly 3, and packaging assembly 3 includes frame body 301, electric push rod 302, mounting frame 303, vertical rod 304, connecting frame 305, fixing frame 306, cutting knife 307, telescopic rod 308, cavity 309, air extraction needle 310, elastic piece 311, mounting plate 312, heat sealing frame 313.

[0029] In an embodiment of the utility model, frame body 301 is fixedly connected at the top end surface of workbench 1, and the inside top surface of frame body 301 is fixedly connected with electric push rod 302, and the output end of electric push rod 302 is fixedly connected with mounting frame 303, and the bottom end surface of mounting frame 303 is fixedly connected with vertical rod 304, and the bottom end of vertical rod 304 is fixedly connected with connecting frame 305, and the outer wall of cutting knife 307 is fixedly connected with fixing frame 306, and fixing frame 306 is fixedly connected at the inner wall of connecting frame 305, and the top end of air extraction needle 310 is fixedly connected with cavity 309, and the bottom end surface of cavity 309 is fixedly connected with telescopic rod 308, and the bottom end of telescopic rod 308 is fixedly connected at the top end surface of fixing frame 306, and the lateral wall of cavity 309 is fixedly connected with air inlet pipe 10, and the lateral wall of cavity 309 is fixedly connected with air outlet pipe 11, and air inlet pipe 10 is fixedly connected with external gas tank, and air outlet pipe 11 is fixedly connected with external vacuum extractor.

[0030] The top end surface of heat sealing frame 313 is fixedly connected with mounting plate 312, and the top end surface of mounting plate 312 is fixedly connected with elastic piece 311, and the top end of elastic piece 311 is fixedly connected at the inside top surface of fixing frame 306, and the top end surface of mounting plate 312 is fixedly connected with heater, and the lateral wall of heater is fixedly connected with electric wire, and electric wire is electrically connected with external power supply line, and heater heats mounting plate 312 and heat sealing frame 313, to realize heat sealing of film 7 and packaging box.

[0031] The top end face of the workbench 1 is fixedly connected with a positioning block 4, the top end face of the workbench 1 is provided with a communication groove 5, the top end face of the workbench 1 is provided with a connecting groove 6, the air extraction needle 310 is located directly above the communication groove 5 and the connecting groove 6, the top end face of the workbench 1 is provided with a film 7, the top end face of the film 7 is provided with a positioning hole 8, the top end face of the film 7 is provided with an air extraction hole 9, the positioning hole 8 is inserted with the positioning block 4, and the air extraction needle 310 is inserted with the air extraction hole 9.

[0032] Firstly, the packaging box is placed into the placing groove 2, then the film 7 is laid on the top end face of the workbench 1, the positioning hole 8 is inserted with the positioning block 4, the electric push rod 302 drives the mounting frame 303 to move downward, the air extraction needle 310 is inserted into the air extraction hole 9, the external vacuum machine works, the air in the packaging box is extracted, then fresh-keeping air is added through the gas tank, the electric push rod 302 continues to press down, because the air extraction needle 310 abuts against the top end face of the workbench 1, the telescopic rod 308 is stretched, the heat sealing frame 313 contacts the top end face of the film 7, the heat sealing frame 313 heats the film 7, the film 7 is heat sealed on the top of the packaging box, the heat sealing frame 313 does not move any more, the descent of the electric push rod 302 deforms the elastic member 311, and then the cutting knife 307 cuts the film 7 along the edge of the packaging box, realizing the integrated operation of air extraction, heat sealing and cutting, reducing manual intervention, improving production efficiency, and reducing operation error.

[0033] The air extraction hole 9 is located between the packaging boxes, avoiding the problem of sealing not being tight caused by the holes on both sides of the packaging material, the design of the air extraction hole 9 makes the heat sealing process more complete, ensuring the sealing performance of the packaging and the product preservation effect, the communication groove 5 and the connecting groove 6 are arranged between the placing grooves 2, the communication groove 5 and the connecting groove 6 connect the placing grooves 2 into an integrated air channel, so that the air extraction needle 310 can uniformly extract the air in the packaging box, avoiding the problem that the air in the packaging box is not fully extracted and the air in the packaging box is still residual, and uniformly filling the fresh-keeping gas into the packaging box, which can ensure that the internal environment of each packaging box meets the same requirements, thereby improving the product preservation effect, avoiding the problem of uneven local pressure, making the heat sealing process more stable and accurate, and ensuring the sealing performance and overall quality of the packaging.

[0034] In addition, the connecting frame 305 is sleeved with the movable column 14, the bottom end surface of the movable column 14 is fixedly connected with the pressing frame 15, the side wall of the movable column 14 is sleeved with the spring 16, the top of the movable column 14 is fixedly connected with the baffle, one end of the spring 16 is fixedly connected with the baffle, the other end of the spring 16 is fixedly connected with the connecting frame 305, through the elasticity of the spring 16, the pressing frame 15 is pushed to press the film 7 on the workbench 1 tightly, the continuous and uniform pressing force ensures that the air leakage phenomenon does not occur in the air exhaust and inflation processes, so that the real vacuum state and the full preservation gas in the packaging box can be realized, the preservation gas can be uniformly and stably filled into the packaging box, the shelf life of the product is prolonged and the freshness of the product is maintained, and the production efficiency and product consistency are improved.

[0035] In the utility model, in use, the packaging box is placed into the placing groove 2, then the film 7 is laid on the top end surface of the workbench, the positioning hole 8 is inserted with the positioning block 4, the electric push rod 302 pushes the mounting frame 303 to move downwards, the air exhaust needle 310 is inserted into the air exhaust hole 9, the external vacuum machine works, the air in the packaging box is exhausted, then the preservation air is added through the gas tank, the electric push rod 302 continues to press downwards, because the air exhaust needle 310 abuts against the top end surface of the workbench 1, the telescopic rod 308 is stretched, the heat sealing frame 313 contacts the top end surface of the film 7, the heat sealing frame 313 heats the film 7, the film 7 is heat sealed on the top of the packaging box, the heat sealing frame 313 does not move any more, the descent of the electric push rod 302 makes the elastic member 311 deform, then the cutting knife 307 cuts the film 7 along the edge of the packaging box, the integrated operation of air exhaust, heat sealing and cutting is realized, the manual intervention is reduced, the production efficiency is improved, the air exhaust hole 9 is located between the packaging boxes, the problem of sealing not being tight possibly caused by the holes on both sides of the packaging material is avoided, the design of the air exhaust hole 9 makes the heat sealing process more complete, the sealing property of the packaging and the product preservation effect are ensured, the communication groove 5 and the connecting groove 6 connect each placing groove 2 into an integrated air passage, the air exhaust needle 310 can uniformly exhaust the air in the packaging box, the residual air in the packaging is avoided due to the insufficient local air exhaust, the preservation gas is uniformly filled into the packaging box, the same requirement in each packaging box can be ensured, and the product preservation effect is improved.

[0036] The above has made the detailed description to the utility model in general, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to the general technical personnel in the technical field. Therefore, the modification or improvement without departing from the utility model idea spirit is within the protection scope of the utility model.

Claims

1. A working platform (1) for hot forming packaging quick vacuum air-charge structure, the top end face of the working platform (1) is provided with a placing groove (2), characterized in that: The top end face of the workbench (1) is provided with a packaging assembly (3), the packaging assembly (3) comprises: The inner top surface of the frame body (301) is fixedly connected with an electric push rod (302), the output end of the electric push rod (302) is fixedly connected with a mounting bracket (303), the bottom end face of the mounting bracket (303) is fixedly connected with a vertical rod (304), and the bottom end of the vertical rod (304) is fixedly connected with a connecting bracket (305); The outer wall of the cutting knife (307) is fixedly connected with a fixing bracket (306), and the fixing bracket (306) is fixedly connected to the inner wall of the connecting bracket (305); The top end of the air extraction needle (310) is fixedly connected with a cavity (309), the bottom end face of the cavity (309) is fixedly connected with a telescopic rod (308), and the bottom end of the telescopic rod (308) is fixedly connected to the top end face of the fixing bracket (306); The top end face of the heat sealing frame (313) is fixedly connected with a mounting plate (312), the top end face of the mounting plate (312) is fixedly connected with an elastic member (311), and the top end of the elastic member (311) is fixedly connected to the inner top surface of the fixing bracket (306).

2. A quick vacuum aerated structure for thermoformed packaging according to claim 1, characterized in that: The side wall of the cavity (309) is fixedly connected with an air inlet pipe (10), the side wall of the cavity (309) is fixedly connected with an air outlet pipe (11), the air inlet pipe (10) is fixedly connected with an external air tank, and the air outlet pipe (11) is fixedly connected with an external vacuum pump.

3. A quick vacuum aerated structure for thermoformed packaging according to claim 1, characterized in that: The top end face of the workbench (1) is fixedly connected with a positioning block (4), the top end face of the workbench (1) is provided with a communication groove (5), and the top end face of the workbench (1) is provided with a connecting groove (6).

4. A quick vacuum air-fill structure for thermoformed packaging according to claim 1, characterized in that: The top end face of the workbench (1) is provided with a film (7), the top end face of the film (7) is provided with a positioning hole (8), and the top end face of the film (7) is provided with an air extraction hole (9).

5. A quick vacuum air structure for thermoformed packaging according to claim 1, characterized in that: The top end face of the mounting plate (312) is fixedly connected with a heater, the side wall of the heater is fixedly connected with an electric wire, and the electric wire is electrically connected with an external power supply line.

6. A quick vacuum air structure for thermoformed packaging according to claim 1, characterized in that: The connecting bracket (305) is sleeved with a movable column (14), the bottom end face of the movable column (14) is fixedly connected with a pressing frame (15), and the side wall of the movable column (14) is sleeved with a spring (16).

7. A quick vacuum aerated structure for thermoformed packaging according to claim 6, characterized in that: The top of the movable column (14) is fixedly connected with a baffle, one end of the spring (16) is fixedly connected with the baffle, and the other end of the spring (16) is fixedly connected with the connecting bracket (305). The top of the movable column (14) is fixedly connected with a baffle, one end of the spring (16) is fixedly connected with the baffle, and the other end of the spring (16) is fixedly connected with the connecting bracket (305).

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