Corn vacuum packaging air extractor

Abstract

The invention relates to the technical field of vacuum packaging, and discloses a corn vacuum packaging air extractor which comprises a vacuum machine body, four reversing rods, an air extraction sealing cover and four vacuumizing plates, the upper surface of the vacuum machine body is connected with four pre-positioning assemblies, and the four pre-positioning assemblies are matched and aligned with the four vacuumizing plates correspondingly; the upper surface of the vacuum machine body is connected with four elastic assemblies, every two of the four elastic assemblies form a group, a supporting frame is connected between the two elastic assemblies in the same group, and one side of the supporting frame is connected with a reciprocating assembly. According to the air extractor for corn vacuum packaging, after corn on one side is subjected to vacuum packaging through the vacuum machine body, all packaged corn bags can be pushed and scraped towards one side at a time only by shifting the supporting assembly towards one side and moving the supporting assembly, and convenience and rapidness are achieved; after the first batch of packaged corn is completely scraped off, the supporting assemblies do not need to be reset with time, and the two supporting assemblies can be used in a crossed mode, so that convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum packaging, in particular to an air extraction device for vacuum packaging of corn. Background Art

[0002] Corn vacuum packaging is a food preservation technology that extracts the air from the package to achieve a certain vacuum inside the package and then seals the package. At present, vacuum packaging machines are often used when vacuum packaging corn.

[0003] The patent with the current announcement number CN222247951U discloses a vacuum packaging machine, including a machine body, a plurality of lower sealing seat assemblies arranged on the machine body, an upper cover connected to the upper part of the machine body through a swing arm, and a plurality of upper sealing seat assemblies arranged on the upper cover corresponding to the lower sealing seat assemblies; the left side of the upper cover is connected to the machine body through two swing arms, the right side of the upper cover is connected to the machine body through a swing arm, the swing arm located on the right side of the upper cover is arranged between the two swing arms located on the left side of the upper cover, and the three swing arms are arranged parallel to each other. This application adopts a three-swing arm structure, which makes the structure simpler on the basis of ensuring the reliability of structural stability, which is not only conducive to early assembly and later disassembly and maintenance, but also can reduce the production cost of the equipment.

[0004] However, the above vacuum packaging machine still has the following problems in actual use: When multiple corns are placed on the packaging machine platform for vacuum packaging at one time, the packaged corns need to be removed one by one after packaging is completed. This process is time-consuming, which increases the overall working time and thus reduces work efficiency.

[0005] In view of the shortcomings of the prior art, the present invention provides a vacuum packaging vacuum device for corn, which can remove the vacuum-packed corn at one time.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a vacuum packaging vacuum device for corn, comprising a vacuum machine body, four reversing rods installed on both sides of the vacuum machine body, a vacuum sealing cover installed at the other ends of the four reversing rods, and four vacuum plates installed between the vacuum machine body and the vacuum sealing cover, the upper surface of the vacuum machine body is connected with four pre-positioning components, the four pre-positioning components are respectively matched and aligned with the four vacuum plates, the upper surface of the vacuum machine body is connected with four elastic components, the four elastic components are grouped in pairs, a support frame is connected between the two elastic components in the same group, a reciprocating component is connected to one side of the support frame, two support components are connected to the other side of the reciprocating component, the other ends of the two support components are connected with cleaning components, and the two cleaning components match the surface of the vacuum machine body.

[0007] Furthermore, the reciprocating assembly includes a chain, two rotating rods and two sprockets. One end of the two rotating rods is rotatably connected to the inner walls of the two ends of the support frame, and the outer walls of the other ends of the two rotating rods are fixedly connected to the inner walls of the two sprockets. The chain is sleeved on the outer walls of the two sprockets, and the chain is meshed with both sprockets. One side of the chain is connected to the two support assemblies.

[0008] Furthermore, the support assembly includes a support bar, a detachable assembly and an in-place assembly, the outer wall of one end of the support bar is fixedly connected to the side of the chain away from the support frame, one side of the support bar is connected to the detachable assembly, one end of the detachable assembly is connected to the in-place assembly, and the other end of the in-place assembly is connected to the support frame.

[0009] Furthermore, a support groove is provided on one side of the support frame, and one end of the in-place component away from the detachable component is connected to the support groove.

[0010] Furthermore, the detachable component includes a convex sliding bar and a limiting rod, a sliding opening is opened on one side of the support bar, the outer wall of the convex sliding bar is slidably connected to the inner wall of the sliding opening, one end of the convex sliding bar is fixedly connected to one end of the limiting rod, the other end of the limiting rod is connected to the positioning component, and the outer wall of the limiting rod near one end of the positioning component is slidably connected to the inner wall of the support groove.

[0011] Furthermore, the positioning component includes magnet No. 1 and magnet No. 2, one end of magnet No. 2 is fixedly connected to the end of the limit rod away from the convex slide bar, the outer wall of magnet No. 1 is fixedly connected to the inner wall of the support groove, and magnet No. 1 and magnet No. 2 attract each other.

[0012] Furthermore, the cleaning assembly includes a threaded sleeve, wiping cotton, two extension blocks and two reversing shafts, the two ends of the convex slide are respectively fixedly connected to one end of the two extension blocks, the other ends of the two extension blocks are penetrated with a swivel, the two swivels are respectively sleeved and rotatably connected to the outer walls of the two reversing shafts, the wiping cotton is located between the two extension blocks and the two reversing shafts, and the outer walls of the two ends of the wiping cotton are respectively fixedly connected to the outer wall of the adjacent end of the two reversing shafts, the threaded sleeve is sleeved and threadedly connected to the outer wall of one of the reversing shafts, and the side wall of the threaded sleeve is against the side wall of the adjacent extension block.

[0013] Furthermore, a locking bolt is passed through and threadedly connected to the outer wall of one end of the support bar, a limiting hole is provided on the upper surface of one end of the convex slide bar, and the outer wall of the locking bolt screw is slidably connected to the inner wall of the limiting hole.

[0014] Furthermore, the pre-positioning assembly includes a connecting rod, a pressure rod, two L-shaped rods and two support blocks. The bottom surfaces of the two support blocks are fixedly connected to the upper surface of the vacuum machine body. The upper ends of the two support blocks are respectively mounted on the outer walls at both ends of the connecting rod. The outer wall of the connecting rod is also fixedly connected to one end of the two L-shaped rods. The other ends of the two L-shaped rods are fixedly connected to the outer wall of the pressure rod, and the outer wall of the pressure rod is against the surface of the vacuum plate.

[0015] Furthermore, the elastic component includes a guide block, a guide rod, a push spring and an anti-slip sheet. One end of the guide block is fixedly connected to the outer wall of one end of the support frame, the upper end of the guide rod is fixedly connected to the bottom surface of the anti-slip sheet, the lower end of the guide rod passes through the guide block and the push spring and is fixedly connected to the upper surface of the vacuum machine body, the outer wall of the guide rod is slidably connected to the inner wall of the guide block, and the two ends of the push spring are respectively fixedly connected to the vacuum machine body and one side adjacent to the guide block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The vacuum packaging vacuum extraction device for corns is provided with a support component on the upper surface of a vacuum machine body. After the vacuum machine body has vacuum-packed the corns on one side, it is only necessary to push the support component to one side. The movement of the support component can push all the packed corn bags to one side at once and scrape them off. It is convenient and quick.

[0017] The vacuum packaging vacuum device for corns has a reciprocating assembly between the vacuum machine body and the supporting assembly, and two opposing supporting assemblies on the reciprocating assembly. After the first batch of packaged corns are scraped off, there is no need to spend time resetting the supporting assembly, and the two supporting assemblies can be used crosswise, which is convenient and quick.

[0018] The vacuum packaging vacuum extraction device for corns has two cleaning components arranged between two supporting components and the vacuum machine body. The supporting components can scrape the vacuum-packed corns off the vacuum machine body while the cleaning components can clean the surface of the vacuum machine body.

[0019] The vacuum packaging vacuum device for corn can control the support frame to adaptively descend when the vacuum sealing cover is pressed down to seal and evacuate air, by arranging an elastic component between the reciprocating component and the vacuum machine body, so as to avoid occupying the overall space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance of the present invention; Figure 2 It is a detailed connection diagram of the vacuum machine body, vacuum plate and pre-positioning assembly of the present invention; Figure 3It is a detailed connection diagram of the reciprocating assembly, the supporting assembly and the cleaning assembly of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of each component from another perspective; Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 For the present invention Figure 3 Exploded diagram of each component in the diagram; Figure 7 It is an exploded schematic diagram of components such as the support assembly and the cleaning assembly of the present invention.

[0021] In the figure: 1. Vacuum machine body; 2. Reversing rod; 3. Vacuum sealing cover; 4. Vacuum plate; 5. Connecting rod; 6. Pressure rod; 7. L-shaped rod; 8. Support block; 9. Threaded sleeve; 10. Wiping cotton; 11. Support bar; 12. Support frame; 13. Guide block; 14. Guide rod; 15. Push spring; 16. Anti-slip sheet; 17. Turning rod; 18. Chain; 19. Support groove; 20. Locking bolt; 21. Sprocket; 22. Extension block; 23. Convex slide bar; 24. Reversing shaft; 25. Limit rod; 26. No. 1 magnet; 27. No. 2 magnet; 28. Slide; 29. ​​Limit hole; 30. Turning. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-Figure 7 A vacuum packaging vacuum device for corn comprises a vacuum machine body 1, four reversing rods 2 installed on both sides of the vacuum machine body 1, a vacuum sealing cover 3 installed at the other end of the four reversing rods 2, and four vacuum plates 4 installed between the vacuum machine body 1 and the vacuum sealing cover 3. Four pre-positioning components are connected to the upper surface of the vacuum machine body 1, and the four pre-positioning components are respectively matched and aligned with the four vacuum plates 4. Four elastic components are connected to the upper surface of the vacuum machine body 1, and the four elastic components are grouped in pairs. A support frame 12 is connected between two elastic components in the same group, a reciprocating component is connected to one side of the support frame 12, and two support components are connected to the other side of the reciprocating component. The other ends of the two support components are connected to cleaning components, and the two cleaning components match the surface of the vacuum machine body 1.

[0024] The vacuum packaging vacuum device for corn in the present invention is similar in structure to the existing vacuum packaging vacuum device, such as a vacuum packaging machine disclosed in the patent with publication number CN222247951U. Figures 1 to 7As shown, the corn vacuum packaging exhaust device in the present application can be used in the following steps: Step 1: First, the vacuum sealing cover 3 is turned to one side through the four reversing rods 2, for example Figure 1 On the left side of the vacuum machine body 1, the two vacuum plates 4 on the right side of the vacuum machine body 1 are exposed, and then the two pre-positioning components on the right side of the vacuum machine body 1 are unfolded to both sides respectively, and then the openings of several corn packaging bags that need to be vacuumed are placed on the vacuum plates 4, and then the vacuum sealing cover 3 is turned from the left side of the vacuum machine body 1 that needs to be vacuumed to the right side, so that the several corns just placed can be vacuumed.

[0025] Step 2: When the vacuum sealing cover 3 is rotated to the right side of the vacuum machine body 1 to draw a vacuum, the corn packaging bag that has been vacuumed on the left side of the vacuum machine body 1 will leak out. At this time, the operator only needs to rotate the support assembly and rotate the cleaning assembly on the support assembly to contact the surface of the vacuum machine body 1, and then continue to rotate the support assembly along the reciprocating assembly and the support frame 12.

[0026] Step 3: As the cleaning component moves on the surface of the vacuum machine body 1, the vacuumed corn can be pushed from the surface of the vacuum machine body 1 to the end of the vacuum machine body 1, so that all the packaged corn can be pushed off at one time. Before that, just place a collection frame under the end of the vacuum machine body 1 to collect all the corn at one time.

[0027] In addition, as the cleaning component pushes the corn off, the cleaning component will also clean up the impurities or corn kernels, water stains, etc. remaining on the surface of the vacuum machine body 1 during the movement, thereby reducing the probability of corn being contaminated during vacuum packaging.

[0028] It should be noted that when the vacuum seal cover 3 is covered on the right side of the vacuum machine body 1, the vacuum seal cover 3 will press on the support frame 12, thereby compressing the support frame 12 downwards to compress the two elastic components. At this time, the two cleaning components connected to the reciprocating component are located at the end of the reciprocating component (such as Figure 3 and Figure 4 ), so the cleaning assembly does not contact the surface of the vacuum machine body 1, so it will not hinder the descent of the support frame 12 and the reciprocating assembly.

[0029] As a preferred embodiment of the present invention, the reciprocating assembly includes a chain 18, two rotating rods 17 and two sprockets 21, one end of the two rotating rods 17 is rotatably connected to the inner walls of the two ends of the support frame 12, the outer walls of the other ends of the two rotating rods 17 are fixedly connected to the inner walls of the two sprockets 21, the chain 18 is sleeved on the outer walls of the two sprockets 21, and the chain 18 is meshed with the two sprockets 21, and one side of the chain 18 is connected to the two support assemblies.

[0030] More specifically, when it is necessary to pull the cleaning component to rotate, the cleaning component will rotate together with the chain 18 through the supporting component. After the chain 18 rotates, it can rotate with the assistance of the two sprockets 21, so that reciprocating rotation can be achieved. And because the two cleaning components are respectively located at the two ends of the chain 18, the two cleaning components will always be in a relative state, that is, when one cleaning component moves from one side of the vacuum machine body 1 to the other side, the other cleaning component will return from the other side, and then it can continue to be used after the next vacuum packaging.

[0031] As a preferred solution of the present invention, the support assembly includes a support bar 11, a detachable assembly and an in-place assembly. The outer wall of one end of the support bar 11 is fixedly connected to the side of the chain 18 away from the support frame 12, one side of the support bar 11 is connected to the detachable assembly, one end of the detachable assembly is connected to the in-place assembly, and the other end of the in-place assembly is connected to the support frame 12.

[0032] More specifically, because the support bar 11 is connected to the chain 18, and the positioning component is connected to the support frame 12, when the chain 18 rotates with the support bar 11, the positioning component will rotate together inside the support frame 12 to provide an additional supporting force. At the same time, when the cleaning component moves to both ends of the chain 18, the positioning component matches the support frame 12, which can also increase a sense of frustration, reminding the operator that the specified position has been reached and the chain 18 can be stopped.

[0033] As a preferred solution of the present invention, a support groove 19 is formed on one side of the support frame 12 , and one end of the in-place component away from the detachable component is connected to the support groove 19 .

[0034] More specifically, by providing the supporting groove 19, the positioning assembly can be given a connectivity.

[0035] As a preferred solution of the present invention, the detachable component includes a convex slide 23 and a limit rod 25. A slide opening 28 is opened on one side of the support bar 11. The outer wall of the convex slide 23 is slidably connected to the inner wall of the slide opening 28. One end of the convex slide 23 is fixedly connected to one end of the limit rod 25. The other end of the limit rod 25 is connected to the positioning component, and the outer wall of the limit rod 25 close to one end of the positioning component is slidably connected to the inner wall of the support groove 19.

[0036] More specifically, when the support bar 11 needs to be moved, the support bar 11 will move with the convex sliding bar 23 and the limiting rod 25 . Since the limiting rod 25 is inserted into the support groove 19 , it can assist the support bar 11 in moving.

[0037] It should be particularly noted here that when the cleaning component is used to clean the surface of the vacuum machine body 1 and to unload the vacuum-packed corn, the cleaning component will not lift up because it is placed on the surface of the vacuum machine body 1 .

[0038] As a preferred solution of the present invention, the positioning component includes a No. 1 magnet 26 and a No. 2 magnet 27, one end of the No. 2 magnet 27 is fixedly connected to the end of the limit rod 25 away from the convex slide 23, the outer wall of the No. 1 magnet 26 is fixedly connected to the inner wall of the support groove 19, and the No. 1 magnet 26 and the No. 2 magnet 27 attract each other.

[0039] More specifically, when the support bar 11 is displaced, the limit rod 25 will move with the second magnet 27 inside the support slot 19. When the second magnet 27 moves to the end of the support slot 19, the second magnet 27 will attract the first magnet 26, so that a pause can be felt during the sliding process, which can remind the staff that they have reached the end of the support slot 19.

[0040] As a preferred solution of the present invention, the cleaning component includes a threaded sleeve 9, a wiping cotton 10, two extension blocks 22 and two reversing shafts 24, the two ends of the convex slide 23 are respectively fixedly connected to one end of the two extension blocks 22, and the other ends of the two extension blocks 22 are penetrated with a turning opening 30, and the two turning openings 30 are respectively sleeved and rotatably connected to the outer walls of the two reversing shafts 24, the wiping cotton 10 is located between the two extension blocks 22 and the two reversing shafts 24, and the outer walls of the two ends of the wiping cotton 10 are respectively fixedly connected to the outer walls of the adjacent ends of the two reversing shafts 24, the threaded sleeve 9 is sleeved and threadedly connected to the outer wall of one of the reversing shafts 24, and the side walls of the threaded sleeve 9 are against the side walls of the adjacent extension blocks 22.

[0041] More specifically, when it is necessary to unload the vacuum-packed corn or clean the surface of the vacuum machine body 1, as the support bar 11 moves, the support bar 11 moves together with the threaded sleeve 9, the wiping cotton 10, the two extension blocks 22 and the two reversing shafts 24 connected thereto through the convex slide bar 23. During the movement, the wiping cotton 10 and the convex slide bar 23 can scrape the packaged corn on the surface of the vacuum machine body 1 to the end of the vacuum machine body 1, thereby facilitating unloading and one-time collection.

[0042] In addition, after being used for a period of time, the cleaning effect of the wiping cotton 10 may be reduced due to wear or hygiene reasons. Therefore, after using it for a period of time, the threaded sleeve 9 can be rotated. After the threaded sleeve 9 is rotated, the reversing shaft 24 connected to it will be loosened. At this time, the wiping cotton 10 can be rotated by an angle through the two reversing shafts 24, and then the unworn and relatively clean side can be rotated to the side facing the vacuum machine body 1 for subsequent operations. It can be replaced once all surfaces of the wiping cotton 10 are unusable, which is convenient and saves trouble.

[0043] As a preferred solution of the present invention, a locking bolt 20 is passed through and threadedly connected to the outer wall of one end of the support bar 11, a limiting hole 29 is provided on the upper surface of one end of the convex slide bar 23, and the outer wall of the screw of the locking bolt 20 is slidably connected to the inner wall of the limiting hole 29.

[0044] More specifically, by setting the locking bolt 20, the convex slide 23 can be limited by the locking bolt 20 and the limiting hole 29 when the wiping cotton 10 does not need to be replaced; similarly, when the wiping cotton 10 needs to be replaced, the convex slide 23 can be pulled out from the sliding mouth 28 by simply loosening the locking bolt 20.

[0045] As a preferred solution of the present invention, the pre-positioning assembly includes a connecting rod 5, a pressure rod 6, two L-shaped rods 7 and two support blocks 8. The bottom surfaces of the two support blocks 8 are fixedly connected to the upper surface of the vacuum machine body 1, and the upper ends of the two support blocks 8 are respectively mounted on the outer walls at both ends of the connecting rod 5. The outer wall of the connecting rod 5 is also fixedly connected to one end of the two L-shaped rods 7, and the other ends of the two L-shaped rods 7 are fixedly connected to the outer wall of the pressure rod 6, and the outer wall of the pressure rod 6 is against the surface of the vacuum plate 4.

[0046] More specifically, by setting up a pre-positioning component, a simple limit can be made for the openings of several corn packaging bags before the vacuum sealing cover 3 is pressed down to prevent the packaging bags from loosening, but the pressure is not large. After the corn is vacuum packed, the corn packaging bags can be directly pushed away from between the pressure rod 6 and the vacuum plate 4 when the cleaning component is pushed.

[0047] In addition, after the mouth of the unpackaged corn packaging bag is placed on the vacuum plate 4, it is only necessary to rotate the pressure rod 6. At this time, the pressure rod 6 can rotate inside the two support blocks 8 with the connecting rod 5 through the two L-shaped rods 7, so that the pressure rod 6 can be pressed at the bag mouth position; conversely, when the pressure rod 6 needs to be opened, the pressure rod 6 can be lifted upward according to the above steps, which is convenient and easy to operate.

[0048] As a preferred solution of the present invention, the elastic component includes a guide block 13, a guide rod 14, a push spring 15 and an anti-slip sheet 16, one end of the guide block 13 is fixedly connected to the outer wall of one end of the support frame 12, the upper end of the guide rod 14 is fixedly connected to the bottom surface of the anti-slip sheet 16, the lower end of the guide rod 14 passes through the guide block 13 and the push spring 15 and is fixedly connected to the upper surface of the vacuum machine body 1, the outer wall of the guide rod 14 is slidably connected to the inner wall of the guide block 13, and the two ends of the push spring 15 are respectively fixedly connected to the vacuum machine body 1 and the side adjacent to the guide block 13.

[0049] More specifically, when the vacuum sealing cover 3 is not pressed down, the support frame 12 will remain suspended under the action of the push spring 15, thereby raising the overall height; when the vacuum sealing cover 3 is pressed down, the vacuum sealing cover 3 will first contact the support frame 12, and then the support frame 12 will compress the push spring 15, and then the support frame 12 can be vertically lowered through the guide rod 14 and the guide block 13, thereby changing the overall height.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum packaging vacuum device for corn, comprising a vacuum machine body (1), four reversing rods (2) installed on both sides of the vacuum machine body (1), a vacuum sealing cover (3) installed at the other end of the four reversing rods (2), and four vacuum plates (4) installed between the vacuum machine body (1) and the vacuum sealing cover (3), characterized in that: The upper surface of the vacuum machine body (1) is connected to four pre-positioning components, and the four pre-positioning components are respectively matched and aligned with four vacuum plates (4). The upper surface of the vacuum machine body (1) is connected to four elastic components, and the four elastic components are grouped in pairs. A support frame (12) is connected between two elastic components in the same group. A reciprocating component is connected to one side of the support frame (12), and two support components are connected to the other side of the reciprocating component. The other ends of the two support components are connected to cleaning components, and the two cleaning components match the surface of the vacuum machine body (1).

2. The vacuum packaging vacuum pumping device for corn according to claim 1, characterized in that: The reciprocating assembly comprises a chain (18), two rotating rods (17) and two sprocket wheels (21); one end of the two rotating rods (17) is rotatably connected to the inner walls of two ends of the support frame (12), and the outer walls of the other ends of the two rotating rods (17) are fixedly connected to the inner walls of the two sprocket wheels (21); the chain (18) is sleeved on the outer walls of the two sprocket wheels (21), and the chain (18) is meshed with the two sprocket wheels (21); one side of the chain (18) is connected to the two support assemblies.

3. The vacuum packaging vacuum pumping device for corn according to claim 2, characterized in that: The support assembly comprises a support bar (11), a detachable assembly and an in-place assembly, wherein the outer wall of one end of the support bar (11) is fixedly connected to a side of the chain (18) away from the support frame (12), one side of the support bar (11) is connected to the detachable assembly, one end of the detachable assembly is connected to the in-place assembly, and the other end of the in-place assembly is connected to the support frame (12).

4. The vacuum packaging vacuum pumping device for corn according to claim 3, characterized in that: A support groove (19) is provided on one side of the support frame (12), and one end of the in-place component away from the detachable component is connected to the support groove (19).

5. The vacuum packaging vacuum pumping device for corn according to claim 4, characterized in that: The detachable component comprises a convex sliding bar (23) and a limiting rod (25); a sliding opening (28) is provided on one side of the support bar (11); the outer wall of the convex sliding bar (23) is slidably connected to the inner wall of the sliding opening (28); one end of the convex sliding bar (23) is fixedly connected to one end of the limiting rod (25); the other end of the limiting rod (25) is connected to the positioning component; and the outer wall of the limiting rod (25) close to one end of the positioning component is slidably connected to the inner wall of the support groove (19).

6. The vacuum packaging vacuum pumping device for corn according to claim 5, characterized in that: The in-position assembly comprises a first magnet (26) and a second magnet (27), one end of the second magnet (27) is fixedly connected to an end of the limit rod (25) away from the convex slide bar (23), the outer wall of the first magnet (26) is fixedly connected to the inner wall of the support groove (19), and the first magnet (26) and the second magnet (27) attract each other.

7. The vacuum packaging vacuum pumping device for corn according to claim 5, characterized in that: The cleaning assembly comprises a threaded sleeve (9), a wiping cotton (10), two extension blocks (22) and two reversing shafts (24); the two ends of the convex slide bar (23) are respectively fixedly connected to one end of the two extension blocks (22); the other ends of the two extension blocks (22) are penetrated with a turning opening (30); the two turning openings (30) are respectively sleeved and rotatably connected to the outer walls of the two reversing shafts (24); the wiping cotton (10) is located between the two extension blocks (22) and the two reversing shafts (24); the outer walls of the two ends of the wiping cotton (10) are respectively fixedly connected to the outer walls of adjacent ends of the two reversing shafts (24); the threaded sleeve (9) is sleeved and threadedly connected to the outer wall of one of the reversing shafts (24); and the side wall of the threaded sleeve (9) abuts against the side wall of the adjacent extension block (22).

8. The vacuum packaging vacuum pumping device for corn according to claim 5, characterized in that: A locking bolt (20) is threadedly connected through the outer wall of one end of the support bar (11), a limiting hole (29) is provided on the upper surface of one end of the convex sliding bar (23), and the outer wall of the screw rod of the locking bolt (20) is slidably connected to the inner wall of the limiting hole (29).

9. The vacuum packaging vacuum pumping device for corn according to claim 1, characterized in that: The pre-positioning assembly comprises a connecting rod (5), a pressure rod (6), two L-shaped rods (7) and two support blocks (8); the bottom surfaces of the two support blocks (8) are fixedly connected to the upper surface of the vacuum machine body (1); the upper ends of the two support blocks (8) are respectively sleeved on the outer walls at both ends of the connecting rod (5); the outer wall of the connecting rod (5) is also fixedly connected to one end of the two L-shaped rods (7); the other ends of the two L-shaped rods (7) are fixedly connected to the outer wall of the pressure rod (6); and the outer wall of the pressure rod (6) abuts against the surface of the vacuum plate (4).

10. The vacuum packaging vacuum pumping device for corn according to claim 1, characterized in that: The elastic component comprises a guide block (13), a guide rod (14), a push spring (15) and an anti-slip sheet (16); one end of the guide block (13) is fixedly connected to the outer wall of one end of the support frame (12); the upper end of the guide rod (14) is fixedly connected to the bottom surface of the anti-slip sheet (16); the lower end of the guide rod (14) passes through the guide block (13) and the push spring (15) and is fixedly connected to the upper surface of the vacuum machine body (1); the outer wall of the guide rod (14) is slidably connected to the inner wall of the guide block (13) at the point where the guide block (13) passes through; and the two ends of the push spring (15) are respectively fixedly connected to the vacuum machine body (1) and one side adjacent to the guide block (13).

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