Clamping and heat-sealing structure of vacuum packaging machine

Abstract

The utility model relates to a clamping and heat sealing structure of a vacuum packaging machine, which comprises a machine table, an upper heat sealing plate capable of lifting up and down is arranged above the front end of the machine table, a lower heat sealing plate which is positioned above the machine table and capable of lifting up and down is arranged below the upper heat sealing plate, and a limiting plate is arranged in the lifting stroke of the lower heat sealing plate. The limiting plate is driven by an electric driving mechanism or a pneumatic telescopic mechanism or a hydraulic telescopic mechanism to conduct lifting adjustment. According to the clamping and heat-sealing structure of the vacuum packaging machine, the limiting plate is arranged in the lifting stroke of the lower heat-sealing plate, the limiting plate is driven by the electric driving mechanism or the pneumatic telescopic mechanism or the hydraulic telescopic mechanism to conduct lifting adjustment, the method is accurate and rapid, the troubles that original manual adjustment is slow, and adjustment needs to be conducted again due to the fact that single-time adjustment is not accurate are avoided, and the working efficiency is improved. The structure is stable, reliable and convenient to adjust.

Description

Technical Field

[0001] This utility model relates to a clamping and heat-sealing structure for a vacuum packaging machine. Background Technology

[0002] Existing patent CN214357099U discloses an improved heat-sealing structure for a vacuum packaging machine, including a machine base. A heat-sealing component that can be raised and lowered is located above the front end of the machine base. An upper clamping component that can be raised and lowered is located behind the heat-sealing component. A lower clamping component that can be raised and lowered is located below the heat-sealing component and the upper clamping component. A flat plate for placing the packaging bag is located behind the upper and lower clamping components. The upper clamping component, lower clamping component, and flat plate are all located above the machine base. The structure is simple, highly adaptable to packaging bags of different sizes, has low tearing force at the bag opening, is not easily deformed, and improves the sealing success rate. However, it has the following drawbacks:

[0003] For packaging bags of different sizes, the lower heat-sealing plate needs to be raised to different heights. The height limit adjustment of the lower heat-sealing plate in this prior art patent mainly relies on manual adjustment, which has the problems of slow adjustment and inaccurate adjustment after one adjustment, requiring readjustment.

[0004] To address the above technical issues, this paper proposes a clamping and heat-sealing structure for a vacuum packaging machine. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a clamping and heat sealing structure for a vacuum packaging machine.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a clamping and heat-sealing structure for a vacuum packaging machine, including a machine base, an upper heat-sealing plate that can be raised and lowered is provided above the front end of the machine base, and a lower heat-sealing plate that can be raised and lowered is provided below the upper heat-sealing plate and is located above the machine base. A limit plate is provided in the lifting stroke of the lower heat-sealing plate, and the limit plate is driven by an electric drive mechanism, a pneumatic telescopic mechanism, or a hydraulic telescopic mechanism for lifting and adjustment.

[0007] Preferably, the lower heat-sealing plate is lifted and lowered by a lower heat-sealing lifting cylinder.

[0008] Preferably, there are two lower heat-sealing lifting cylinders, which are located at the left and right ends of the lower heat-sealing plate. The cylinder body of the lower heat-sealing lifting cylinder is fixedly connected to the bottom surface of the machine base, and the piston rod of the lower heat-sealing lifting cylinder is fixedly connected to the lower heat-sealing plate.

[0009] Preferably, the lower heat-sealing lifting cylinder is a compact cylinder of the ACED specification, which is a dual-axis double-acting type.

[0010] Preferably, the limiting plate is located below the machine tool, and the left and right ends of the limiting plate are provided with limiting through holes for the piston rod of the compact cylinder to pass vertically through, and the bottom end of the piston rod of the compact cylinder is fixedly connected with a limiting nut.

[0011] Preferably, the limiting plate is driven to rise and fall by an electric drive mechanism, and the electric drive mechanism is an electric push rod fixedly connected to the bottom surface of the machine base. The telescopic rod of the electric push rod is fixedly connected to the limiting plate. Guide holes are provided on the left and right sides of the limiting plate, and a guide rod is fixedly connected to the bottom surface of the machine base and passes vertically through the guide holes.

[0012] Preferably, the upper heat-sealing plate is driven to rise and fall by an upper heat-sealing lifting cylinder fixedly connected to the bottom surface of the machine base, and a slider slide rail moving pair is connected between the upper heat-sealing plate and the machine base during the lifting stroke.

[0013] Preferably, the upper heat-sealing plate is fixedly connected to a heat-sealing plate mounting base via a heat-sealing plate insulation block, the piston rod of the upper heat-sealing lifting cylinder is fixedly connected to the heat-sealing plate mounting base, and the slider slide rail moving pair is connected to the lifting stroke between the heat-sealing plate mounting base and the machine base.

[0014] Preferably, a lifting and lowering sealing clamp is provided above the front end of the machine tool, and the sealing clamp is located on the rear side of the upper heat sealing plate.

[0015] Preferably, the top surface of the lower heat-sealing plate is provided with a heat-sealing silicone strip corresponding to the upper heat-sealing plate, and a clamping support part corresponding to the sealing clip is also provided.

[0016] Compared with the prior art, the present invention has the following advantages: the clamping and heat sealing structure of the vacuum packaging machine sets a limiting plate in the lifting stroke of the lower heat sealing plate, and the limiting plate is driven by an electric drive mechanism, a pneumatic telescopic mechanism or a hydraulic telescopic mechanism for lifting and adjusting. This method is accurate and fast, avoiding the trouble of slow manual adjustment and the need for readjustment after each adjustment. The structure is stable, reliable and easy to adjust.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 3 .

[0021] Figure 4 This is a schematic diagram of the initial state of an embodiment of the present utility model. Figure 1 .

[0022] Figure 5 This is a schematic diagram of the initial state of an embodiment of the present utility model. Figure 2 .

[0023] Figure 6 This is a schematic diagram of the sealing clip descending state according to an embodiment of the present invention. Figure 1 .

[0024] Figure 7 This is a schematic diagram of the sealing clip descending state according to an embodiment of the present invention. Figure 2 .

[0025] Figure 8 This is a schematic diagram of the descending state of the upper heat-sealing plate in an embodiment of the present invention. Figure 1 .

[0026] Figure 9 This is a schematic diagram of the descending state of the upper heat-sealing plate in an embodiment of the present invention. Figure 2 .

[0027] Figure 10 This diagram illustrates the state of the electric actuator fully extended and the lower heat-sealing plate at its lowest position. Figure 1 .

[0028] Figure 11 This diagram illustrates the state of the electric actuator fully extended and the lower heat-sealing plate at its lowest position. Figure 2 .

[0029] Figure 12 This diagram illustrates the state of the electric actuator retracted into its position and the lower heat-sealing plate at its highest position. Figure 1 .

[0030] Figure 13 This diagram illustrates the state of the electric actuator retracted into its position and the lower heat-sealing plate at its highest position. Figure 2 . Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] like Figures 1-13 As shown, this embodiment provides a clamping and heat-sealing structure for a vacuum packaging machine, including a machine base 1. An upper heat-sealing plate 2 that can be raised and lowered is provided above the front end of the machine base, and a lower heat-sealing plate 3 that is located above the machine base and can be raised and lowered is provided below the upper heat-sealing plate. A limit plate 4 is provided in the lifting stroke of the lower heat-sealing plate, and the limit plate is driven by an electric drive mechanism, a pneumatic telescopic mechanism, or a hydraulic telescopic mechanism for lifting and adjustment.

[0035] In this embodiment of the utility model, the lower heat-sealing plate is driven to rise and fall by the lower heat-sealing lifting cylinder 5.

[0036] In this embodiment of the utility model, there are two lower heat-sealing lifting cylinders, which are located at the left and right ends of the lower heat-sealing plate. The cylinder body of the lower heat-sealing lifting cylinder is fixedly connected to the bottom surface of the machine base, and the piston rod of the lower heat-sealing lifting cylinder is fixedly connected to the lower heat-sealing plate.

[0037] In this embodiment of the utility model, the lower heat-sealing lifting cylinder is a compact cylinder of the ACED specification from Airtac, which is a dual-axis double-acting type.

[0038] In this embodiment of the utility model, the limiting plate is located below the machine base, and the left and right ends of the limiting plate are provided with limiting through holes for the piston rod of the lower part of the compact cylinder to pass through vertically. The bottom end of the lower piston rod of the compact cylinder is fixedly connected with a limiting nut 6.

[0039] In this embodiment of the utility model, the limiting plate is driven to rise and fall by an electric drive mechanism, and the electric drive mechanism adopts an electric push rod 7 fixedly connected to the bottom surface of the machine platform. The telescopic rod of the electric push rod is fixedly connected to the limiting plate. Guide holes 8 are provided on the left and right sides of the limiting plate. A guide rod 9 is fixedly connected to the bottom surface of the machine platform and passes vertically through the guide holes.

[0040] In this embodiment of the utility model, the upper heat-sealing plate is driven to rise and fall by an upper heat-sealing lifting cylinder 10 fixedly connected to the bottom surface of the machine base. A slider slide rail moving pair 11 is connected between the upper heat-sealing plate and the machine base in the lifting stroke, which guides the rise and fall of the upper heat-sealing plate.

[0041] In this embodiment of the utility model, the upper heat-sealing plate is fixedly connected to the heat-sealing plate mounting base 13 via the heat-sealing plate heat insulation block 12, the piston rod of the upper heat-sealing lifting cylinder is fixedly connected to the heat-sealing plate mounting base, and the slider slide rail moving pair is connected to the lifting stroke between the heat-sealing plate mounting base and the machine base.

[0042] In this embodiment of the present invention, a sealing clip 14 that can be raised and lowered is provided above the front end of the machine tool, and the sealing clip is located on the rear side of the upper heat sealing plate.

[0043] In this embodiment of the utility model, the sealing clamp is driven to rise and fall by the sealing clamp lifting cylinder 15.

[0044] In this embodiment of the utility model, the top surface of the lower heat-sealing plate is provided with a heat-sealing silicone strip 16 corresponding to the upper heat-sealing plate, and a clamping support part 17 corresponding to the sealing clip is also provided.

[0045] In this embodiment of the invention, the working principle of the clamping and heat-sealing structure of the vacuum packaging machine is as follows: Figure 4 , 5 The diagram shows the initial state: both the sealing clamp lifting cylinder and the upper heat-sealing lifting cylinder are extended. The electric push rod extends to drive the limit plate to the designated position, and the lower heat-sealing lifting cylinder extends. The cylinder stops rising when the bottom limit nut of the lower heat-sealing lifting cylinder rod contacts the limit plate, and the lower heat-sealing plate remains stationary at the predetermined position. Figure 6 , 7 As shown, the lifting cylinder of the sealing clamp lowers, driving the sealing clamp to descend and clamp the rice bag between the sealing clamp and the pressure clamp support; as Figure 8 , 9 As shown, the upper heat-sealing lifting cylinder descends, driving the upper heat-sealing plate to descend and heat-seal the rice bag. Additionally, for different specifications, the lower heat-sealing plate needs to be raised to different heights, such as... Figure 10-13 As shown, the electric push rod can be controlled to extend its length to drive the limit plate to different positions. When the lower heat-sealing lifting cylinder extends, the limit nut at the bottom of the cylinder rod contacts the limit plate, preventing it from rising further. The lower heat-sealing plate can then stop at the predetermined height. This method is precise and fast, solving the problem of slow manual adjustment and the need for readjustment after each adjustment.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A clamping and heat sealing structure of a vacuum packaging machine, comprising a machine table, an upper heat sealing plate arranged above the front end of the machine table and capable of being raised and lowered, and a lower heat sealing plate arranged above the machine table and capable of being raised and lowered below the upper heat sealing plate, characterized in that: The lower heat sealing plate is provided with a limiting plate in the lifting stroke, and the limiting plate is driven to lift and adjust by an electric drive mechanism or a pneumatic telescopic mechanism or a hydraulic telescopic mechanism.

2. The pinch, heat seal structure of a vacuum packaging machine of claim 1, wherein: The lower heat sealing plate is driven to lift by a lower heat sealing lifting cylinder.

3. The pinch, heat seal structure of a vacuum packaging machine of claim 2, wherein: The lower heat sealing lifting cylinder has two, and the two lower heat sealing lifting cylinders are located at the left and right ends of the lower heat sealing plate, and the cylinder body of the lower heat sealing lifting cylinder is fixedly connected to the bottom surface of the machine table, and the piston rod of the lower heat sealing lifting cylinder is fixedly connected to the lower heat sealing plate.

4. The pinch and heat seal structure of a vacuum packaging machine according to claim 3, characterized in that: The lower heat sealing lifting cylinder adopts a compact cylinder with a specification of ACED, and the compact cylinder is a double-shaft compound type.

5. The pinch, heat seal structure of a vacuum packaging machine of claim 4 wherein: The limiting plate is located below the machine table, and limiting through holes are formed at the left and right ends of the limiting plate to vertically pass the piston rod below the compact cylinder, and the bottom end of the piston rod below the compact cylinder is fixedly connected with a limiting nut.

6. The pinch, heat seal structure of a vacuum packaging machine of claim 5 wherein: The limiting plate is driven to lift by an electric drive mechanism, and the electric drive mechanism adopts an electric push rod fixedly connected to the bottom surface of the machine table, the telescopic rod of the electric push rod is fixedly connected with the limiting plate, the left and right sides of the limiting plate are provided with guide holes, and the bottom surface of the machine table is fixedly connected with guide rods vertically passing through the guide holes.

7. The pinch and heat seal structure of a vacuum packaging machine according to claim 1, characterized in that: The upper heat sealing plate is driven to lift by an upper heat sealing lifting cylinder fixedly connected to the bottom surface of the machine table, and the upper heat sealing plate and the machine table are connected by a sliding block sliding rail moving pair in the lifting stroke.

8. The pinch, heat seal structure of a vacuum packaging machine of claim 7 wherein: The upper heat sealing plate is fixedly connected with a heat sealing plate mounting seat through a heat sealing plate heat insulation block, the piston rod of the upper heat sealing lifting cylinder is fixedly connected with the heat sealing plate mounting seat, and the sliding block sliding rail moving pair is connected in the lifting stroke between the heat sealing plate mounting seat and the machine table.

9. The pinch and heat seal structure of a vacuum packaging machine according to claim 1, characterized in that: The upper end of the front end of the machine table is provided with a sealable clamp that can be lifted up and down, and the sealable clamp is located at the rear side of the upper heat sealing plate.

10. The pinch, heat seal structure of a vacuum packaging machine of claim 9, wherein: The top surface of the lower heat sealing plate is provided with a heat sealing silica gel strip corresponding to the upper heat sealing plate, and is also provided with a pressing clamp support corresponding to the sealable clamp.

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