Sealing mechanism of vacuum packaging machine

Abstract

The utility model relates to a sealing mechanism of a vacuum packaging machine, comprising a sealing frame, wherein two sides of the bottom of the sealing frame are connected with sealing plates arranged oppositely through a slide rail and slider structure, and the two sealing plates are driven to move closer to or farther from each other by corresponding sealing cylinders; the two sealing plates are connected with heat sealing components arranged oppositely through a slide rail and slider structure, and the two heat sealing components are driven to move closer to or farther from each other by corresponding heat sealing cylinders; an air extraction pipe is arranged above the middle of the two heat sealing components, and the air extraction pipe is driven to rise and fall by an intubation cylinder; a bag blocking plate is rotatably connected to the lower side of the sealing plate on one side, and the bag blocking plate is driven to rotate by the bag blocking cylinder. The utility model effectively improves the efficiency of the sealing work of the vacuum packaging machine.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum packaging machines, in particular to a sealing mechanism for a vacuum packaging machine. Background Art

[0002] Existing granular packaging machines, such as rice, tea, and vacuum food packaging machines, generally use vacuuming and shaping in a vacuum box before heat sealing. This working mode requires first evacuating the vacuum box, then sucking out the air in the packaging bag and then heat sealing, which has low work efficiency. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a sealing mechanism for a vacuum packaging machine to improve production efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sealing mechanism of a vacuum packaging machine comprises a sealing frame, wherein two sides of the bottom of the sealing frame are connected with sealing plates arranged oppositely via a slide rail and slider structure, and the two sealing plates are driven by corresponding sealing cylinders to move closer to or away from each other; the two sealing plates are connected with heat sealing components arranged oppositely via a slide rail and slider structure, and the two heat sealing components are driven by corresponding heat sealing cylinders to move closer to or away from each other; an exhaust pipe is arranged above the middle of the two heat sealing components, and the exhaust pipe is driven to rise and fall by an inserting pipe cylinder; a bag blocking plate is rotatably connected to the lower side of the sealing plate on one side, and the bag blocking plate is driven to rotate by the bag blocking cylinder.

[0006] Furthermore, the front end of the sealing plate is inlaid with silicone rubber.

[0007] Furthermore, the entire sealing mechanism is controlled by PLC.

[0008] The utility model adopts the above technical scheme, and completes the actions of inserting the vacuum tube, sealing the bag mouth, vacuuming, pulling out the vacuum tube and then heat-sealing to complete the vacuum sealing under the control of PLC, which effectively improves the sealing efficiency of the vacuum packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention is further described in detail below with reference to the accompanying drawings and specific implementations:

[0010] Figure 1 It is a side view of the utility model;

[0011] Figure 2 It is a bottom view of the utility model;

[0012] Figure 3 This is a schematic diagram of the utility model in a heat-sealed state. DETAILED DESCRIPTION

[0013] like Figure 1-3 As shown, the utility model is a sealing mechanism for a vacuum packaging machine, including a sealing frame 1, and the two sides of the bottom of the sealing frame 1 are connected to relatively arranged sealing plates 3 through a slide rail slider structure, and the two sealing plates 3 are driven by corresponding sealing cylinders to move closer to or away from each other, and the front end of the sealing plate 3 is inlaid with silicone rubber to ensure that the bag opening is sealed and leak-proof when the vacuum tube is inserted into or pulled out of the bag opening. The two sealing plates 3 are connected to relatively arranged heat sealing components 4 through a slide rail slider structure, and the two heat sealing components 4 are driven by corresponding heat sealing cylinders to move closer to or away from each other. An exhaust pipe 2 is provided above and in the middle of the two heat sealing components 4, and the exhaust pipe 2 is driven to rise and fall by an inserting cylinder.

[0014] A bag-blocking plate 5 (used to stabilize the rice bag for easy transportation) is rotatably connected to the lower side of the sealing plate 3 on one side, and the bag-blocking plate 5 is driven to rotate by the bag-blocking cylinder.

[0015] The slide rail and slider structure mentioned in the utility model is a common linear guide structure in the prior art, and the specific connection structure is not repeated. In addition, the cylinder involved in the utility model can also be replaced by a driver such as an electric push rod.

[0016] The entire sealing mechanism is controlled by PLC.

[0017] The sealing frame 1 is provided with two sets of sealing stations, two sets of exhaust pipes 2, sealing plates 3, sealing mechanisms and bag blocking plates 5, so that it has the ability of multiple stations working simultaneously, which is convenient for improving production efficiency.

[0018] The working principle of the utility model (take vacuum rice bag as an example):

[0019] 1. Initial working state: the intubation cylinder extends upward to lift the suction pipe 2, the sealing cylinder contracts to open the sealing plate 3 with silicone rubber at the front end to both sides to facilitate the entry of the rice bag, the sealing cylinder contracts to open the heat sealing assembly 4 to both sides to prevent scalding the bag mouth, and the bag blocking cylinder contracts to raise the bag blocking plate 5 to prevent hitting the rice bag. After the rice bag is sent in from bottom to top by other mechanisms, the intubation cylinder contracts downward to insert the suction pipe 2 into the rice bag, and then the sealing cylinder extends to make the sealing plate 3 with silicone rubber at the front end merge inward to clamp the bag mouth of the rice bag. After the rice bag is completely vacuumed, the intubation cylinder extends upward to pull out the suction pipe 2, and then the heat sealing cylinder extends to make the heat sealing assembly merge inward to heat-seal the rice bag;

[0020] 2. When the sealing cylinder is extended for a set time, it must be retracted and cannot be sealed for a long time to prevent the rice bag mouth from being melted by excess heat and affecting the result;

[0021] 3. Before the sealed rice bag is mechanically received by the next station, the bag-blocking cylinder extends to turn the baffle plate 5 downward to support the rice bag to prevent the rice bag from shaking during movement. After arriving at the next station, the sealing cylinder contracts the sealing plate 3 and pulls it open to both sides, and the rice bag slides down to the next station.

[0022] The above describes the specific implementation of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this implementation without departing from the principle and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A sealing mechanism for a vacuum packaging machine, comprising a sealing frame, characterized in that: The bottom two sides of the sealing frame are connected with sealing plates arranged opposite to each other through the slide rail slider structure, and the two sealing plates are driven by the corresponding sealing cylinders to move closer to or away from each other; the two sealing plates are connected with heat sealing components arranged opposite to each other through the slide rail slider structure, and the two heat sealing components are driven by the corresponding heat sealing cylinders to move closer to or away from each other; an exhaust pipe is arranged above the middle of the two heat sealing components, and the exhaust pipe is driven to rise and fall by the inserting cylinder; a baffle plate is rotatably connected to the lower side of the sealing plate on one side, and the baffle plate is driven to rotate by the baffle cylinder.

2. A sealing mechanism for a vacuum packaging machine according to claim 1, characterized in that: The front end of the sealing plate is inlaid with silicon rubber.

3. The sealing mechanism of a vacuum packaging machine according to claim 1, characterized in that: The entire sealing mechanism is controlled by PLC.

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