Cigarette case unpacking assembly for cigarette recovery and reinspection

Abstract

The cigarette case unpacking assembly comprises a rack, a cutting unit and a rechecking unit, a first mounting plate is arranged in the rack, a limiting transfer mechanism is arranged on the back face of the first mounting plate and used for transferring cut cigarette cases, a first linear module is arranged above the first mounting plate, and a second linear module is arranged above the first linear module and used for transferring cut cigarette cases. A second mounting plate is fixed to the upper surface of the first linear module, and an unpacking mechanism is arranged on the front face of the second mounting plate and used for unpacking cigarette cases. According to the cigarette case unpacking assembly for cigarette recycling and rechecking, through cooperation of a second linear module and a third linear module, a first connecting plate can be driven to move along the X axis and the Y axis, so that the position of a clamping device is adjusted, through cooperation of the clamping device and a clamping plate, a cigarette case can be driven to be transferred, and through cooperation of a second air cylinder and a second motor, the cigarette case is unpacked. And the first pneumatic sucker and the third pneumatic sucker can be driven to turn over, so that the package of the cigarette case can be turned up.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette recycling, in particular to a cigarette box unpacking component for cigarette recycling and re-inspection. Background Art

[0002] Cigarettes are a type of tobacco product. They are made by drying the tobacco, cutting it into shreds, and then rolling it into a cylindrical strip about 120mm long and 10mm in diameter with paper. When smoking, one end is lit and the smoke is inhaled with the other end through the mouth.

[0003] During the production process of cigarettes, it is necessary to go through multiple processes and finally complete packaging and transportation. After packaging, cigarettes are easily squeezed during transportation, resulting in the cigarette packaging being deflated or broken, etc., which cannot meet the production standards and seriously affects subsequent sales. Therefore, these packaged cigarettes need to be recycled, unpacked and repacked. In existing cigarette production lines, workers generally manually unpack cigarette boxes, resulting in low efficiency in cigarette recycling. For example, China Utility Model Patent Publication No. (CN215707729U) discloses an automatic cigarette box unpacking device, which includes a cutting and feeding unit installed on the upper part of the box body, a display control unit, a pneumatic control unit and a control panel of the box body. The display control unit is used to display and control the working status of all devices in the automatic cigarette box unpacking equipment. The pneumatic control unit is used to independently control the operation of various gas-related devices. The cigarette collection box is located at the output end of the cutting and feeding unit to store cigarettes after the cigarette boxes are disassembled. The waste box collection box is located directly below the cutting and feeding unit to collect the disassembled cigarette boxes. The cigarette collection box and the waste box collection box are installed on the bottom plate of the box body. This patent solves the problem that various cigarette factories currently disassemble cigarette boxes manually, which is labor-intensive and inefficient. However, the patent lacks the effect of limiting the cut cigarette boxes, which makes it difficult for the cigarette boxes to maintain their original state, making it easy for cigarettes to scatter from the cigarette boxes during movement, affecting the effect of cigarette recovery. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a cigarette box unpacking assembly for cigarette recovery and re-inspection, which has the advantage of preventing the cigarette box from being deformed and causing the cigarettes to be scattered before the cigarette box is unpacked. It solves the problem in the patent that there is a lack of limiting effect on the cut cigarette box, which makes it difficult for the cigarette box to maintain its original state, and makes it easy for cigarettes to be scattered from the cigarette box during the movement, affecting the effect of cigarette recovery.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a cigarette box unpacking assembly for cigarette recovery and re-inspection, comprising a frame, a cutting unit, and a re-inspection unit; a first mounting plate is provided inside the frame; a position limiting transfer mechanism is provided on the back of the first mounting plate for transferring cut cigarette boxes; a first linear module is provided above the first mounting plate; a second mounting plate is fixed to the upper surface of the first linear module; and an unpacking mechanism is provided on the front of the second mounting plate for unpacking cigarette boxes;

[0006] The limiting transfer mechanism includes a second linear module fixed to the back of the first mounting plate, a third linear module fixed to the right side of the second linear module, a first connecting plate fixed to the front of the third linear module, a clamping device fixed to the lower surface of the first connecting plate, an output end of the clamping device is fixed to a clamping plate, a fourth linear module is fixed to the front of the first mounting plate, a second connecting plate is fixed to the front of the fourth linear module, a first motor is fixed to the lower surface of the second connecting plate, an output shaft of the first motor passes through and extends to the upper side of the second connecting plate, and a rotating plate is fixed, three limiting plates are fixed to the upper surface of the rotating plate, a support plate is fixed to the back of the second connecting plate, a first cylinder is fixed to the back of the support plate, the output shaft of the first cylinder is fixed to a fixing bracket, a push plate is fixed to the left side of the fixing bracket, a third mounting plate is provided in front of the first mounting plate, and a separation component is provided on the right side of the third mounting plate.

[0007] Furthermore, the three limiting plates are arranged in a C-shape on the upper surface of the rotating plate, and the distance between two opposite limiting plates is adapted to the thickness of the cigarette box.

[0008] Furthermore, an opening is provided on the left side of the third mounting plate, and the length of the opening is greater than the distance between the two opposing limiting plates.

[0009] Furthermore, the separation assembly includes a second cylinder fixed to the right side of the third mounting plate, the output shaft of the second cylinder is fixed with a connecting block, the lower surface of the connecting block is hinged to a top plate through a hinge shaft, the outer side of the top plate is hinged to a first pneumatic suction plate through a hinge shaft, the back side of the third mounting plate is fixed with a mounting block, the first pneumatic suction plate and the back side of the mounting block are hinged through a hinge shaft, the lower surface of the mounting block is fixed with a second pneumatic suction plate, the lower surface of the second connecting plate is fixed with a mounting bracket, the back side of the mounting bracket is fixed with a second motor, the output shaft of the second motor passes through and extends to the inner side of the mounting bracket, and is fixed with a rotating rod, and the outer side of the rotating rod is fixed with a third pneumatic suction plate.

[0010] Furthermore, the number of the mounting blocks is two, and they are symmetrically distributed front to back about the central axis of the third mounting plate, and the distance between the two second pneumatic suction plates is adapted to the thickness of the cigarette box.

[0011] Furthermore, the unpacking mechanism includes a third cylinder fixed on the front side of the second mounting plate, the output shaft of the third cylinder is fixed to the third connecting plate, the back side of the third connecting plate is fixed to the third motor, the output shaft of the third motor passes through and extends to the front side of the third connecting plate, and is fixed to a support frame, the inner side of the support frame is fixed with a limiting frame, the front side of the support frame is fixed with a fourth cylinder, the output shaft of the fourth cylinder is hinged to a rotating block through a hinge shaft, the front side of the support frame is hinged to a rotating shaft through a hinge shaft, the back side of the rotating block is fixed to the outer side of the rotating shaft, and the outer side of the rotating shaft is fixed with a baffle.

[0012] Furthermore, the support frame and the limiting frame are both C-shaped with their openings facing downwards, and the length and width of the baffle are respectively adapted to the length and width of the limiting frame.

[0013] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0014] 1. The cigarette box unpacking assembly for cigarette recovery and re-inspection can drive the first connecting plate to move along the X-axis and Y-axis through the cooperation of the second linear module and the third linear module, so as to adjust the position of the clamping device. The cut cigarette box can be clamped through the cooperation of the clamping device and the clamping plate, so as to transfer the position of the cigarette box to the limit plate and place the cigarette box between the limit plates. The cooperation of the second cylinder and the second motor can drive the first pneumatic suction cup and the third pneumatic suction cup to flip, so that the packaging of the cigarette box can be turned up, making it easier for the cigarettes in the cigarette box to fall out.

[0015] 2. The cigarette box unpacking assembly for cigarette recovery and re-inspection can drive the third connecting plate to move through the cooperation of the third cylinder, thereby driving the third motor to move. Through the cooperation of the third motor, the support frame can be driven to move, thereby driving the limit frame to move, so that the cigarette box placed inside the limit frame can be turned over. Through the cooperation of the fourth cylinder, the rotating block can be driven to move, thereby rotating the rotating rod. Through the cooperation of the rotating rod, the baffle can be driven to rotate, thereby opening the limit frame, allowing the cigarette box and cigarettes inside to fall out, and completing the unpacking of the cigarette box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the unpacking unit of the utility model;

[0018] Figure 3 This is a schematic diagram of the limit transfer mechanism of the utility model;

[0019] Figure 4 This is a side view of the position limiting transfer mechanism of the utility model;

[0020] Figure 5 This is a schematic diagram of the unpacking mechanism of the utility model.

[0021] In the figure: 1 frame, 2 cutting unit, 3 re-inspection unit, 4 first mounting plate, 5 limit transfer mechanism, 501 second linear module, 502 third linear module, 503 first connecting plate, 504 clamping device, 505 clamping plate, 506 fourth linear module, 507 second connecting plate, 508 first motor, 509 rotating plate, 510 limit plate, 511 support plate, 512 first cylinder, 513 fixing frame, 514 push plate, 515 third mounting plate, 516 second Cylinder, 517 connecting block, 518 top plate, 519 first pneumatic suction plate, 520 mounting block, 521 second pneumatic suction plate, 522 mounting frame, 523 second motor, 524 rotating rod, 525 third pneumatic suction plate, 6 first linear module, 7 second mounting plate, 8 unpacking mechanism, 801 third cylinder, 802 third connecting plate, 803 third motor, 804 supporting frame, 805 limiting frame, 806 fourth cylinder, 807 rotating block, 808 rotating shaft, 809 baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 In this embodiment, a cigarette box unpacking assembly for cigarette recovery and re-inspection includes a frame 1, a cutting unit 2 and a re-inspection unit 3. A first mounting plate 4 is provided inside the frame 1, and a limit transfer mechanism 5 is provided on the back of the first mounting plate 4 for transferring the cut cigarette boxes to prevent the cigarettes from falling off during the transfer process. A first linear module 6 is provided above the first mounting plate 4, and a second mounting plate 7 is fixed on the upper surface of the first linear module 6. An unpacking mechanism 8 is provided on the front of the second mounting plate 7 for unpacking the cigarette boxes and separating the cigarette boxes from the cigarettes to facilitate re-inspection of the cigarettes.

[0024] See also Figure 2-4In order to prevent the cigarettes from falling off during the transfer process of the cigarette box, the limiting transfer mechanism 5 in this embodiment includes a second linear module 501 fixed to the back of the first mounting plate 4, a third linear module 502 is fixed to the right side of the second linear module 501, a first connecting plate 503 is fixed to the front of the third linear module 502, a clamping device 504 is fixed to the lower surface of the first connecting plate 503, and a clamping plate 505 is fixed to the output end of the clamping device 504. By opening the second linear module 501 and the third linear module 502, the position of the first connecting plate 503 can be adjusted, thereby driving the clamping device 504 to move, so that the clamping device 504 moves to the top of the cigarette box and clamps the cut cigarette box. A fourth linear module 506 is fixed to the front of the first mounting plate 4, a second connecting plate 507 is fixed to the front of the fourth linear module 506, and a first motor 508 is fixed to the lower surface of the second connecting plate 507. The output shaft of the first motor 508 passes through and extends to the upper side of the second connecting plate 507. A rotating plate 509 is fixed, and three limiting plates 510 are fixed on the upper surface of the rotating plate 509. The clamping device 504 moves the cigarette box to the inner side of the limiting plate 510, and then the first motor 508 is turned on. The output shaft of the first motor 508 drives the rotating plate 509 to rotate, and the rotating plate 509 drives the limiting plates 510 to move, thereby rotating the cigarette box 90 degrees. Then the fourth linear module 506 is turned on, and the fourth linear module 506 drives the second connecting plate 507 to move, thereby driving the cigarette box to move, and the second connecting plate A support plate 511 is fixed to the back of 507, and a first cylinder 512 is fixed to the back of the support plate 511. The output shaft of the first cylinder 512 is fixed to a fixing frame 513, and the output shaft of the first cylinder 512 drives the fixing frame 513 to move. A push plate 514 is fixed to the left side of the fixing frame 513, and the fixing frame 513 drives the push plate 514 to move, and the push plate 514 pushes the cigarette box to the right. A third mounting plate 515 is provided in front of the first mounting plate 4, and a separation component is provided on the right side of the third mounting plate 515.

[0025] In this example, three limiting plates 510 are arranged in a C-shape on the upper surface of the rotating plate 509. The distance between two relative limiting plates 510 is adapted to the thickness of the cigarette box. An opening is provided on the left side of the third mounting plate 515. The length of the opening is greater than the distance between the two relative limiting plates 510 so as to limit the cigarette box and prevent the cigarette box from spreading out after cutting.

[0026] It should be noted that the separation component includes a second cylinder 516 fixed to the right side of the third mounting plate 515, and the output shaft of the second cylinder 516 is fixed with a connecting block 517, and the lower surface of the connecting block 517 is hinged with a top plate 518 through a hinge shaft. The output shaft of the second cylinder 516 drives the connecting block 517 to move, so that the connecting block 517 rotates, and the connecting block 517 drives the top plate 518 to move. The outer side of the top plate 518 is hinged with a first pneumatic suction plate 519 through a hinge shaft, and the top plate 518 drives the first pneumatic suction plate 519 to flip over. The back side of the third mounting plate 515 is fixed with a mounting block 520, and the first pneumatic suction plate 519 is hinged to the back side of the mounting block 520 through a hinge shaft. The lower surface of the mounting block 520 is fixed with a second pneumatic suction plate 521, and the second pneumatic suction plate 521 is on both sides of the cigarette box. Adsorption is performed on the front and back sides. A mounting bracket 522 is fixed to the lower surface of the second connecting plate 507. A second motor 523 is fixed to the back of the mounting bracket 522. The output shaft of the second motor 523 passes through and extends to the inner side of the mounting bracket 522 and is fixed with a rotating rod 524. The output shaft of the second motor 523 drives the rotating rod 524 to rotate. A third pneumatic suction plate 525 is fixed to the outer side of the rotating rod 524. The rotating rod 524 drives the third pneumatic suction plate 525 to rotate, thereby adsorbing the packaging of the cigarette box outward to prevent the cigarettes from adhering to the packaging of the cigarette box. There are two mounting blocks 520, and they are symmetrically distributed front and back with the central axis of the third mounting plate 515. The distance between the two second pneumatic suction plates 521 is adapted to the thickness of the cigarette box. While limiting the cigarette box, the packaging of the cigarette box and the cigarettes are separated.

[0027] See also Figure 5In order to separate the cigarette box from the cigarettes and facilitate re-inspection of the cigarettes, the unpacking mechanism 8 in this embodiment includes a third cylinder 801 fixed to the front side of the second mounting plate 7, the output shaft of the third cylinder 801 is fixed to the third connecting plate 802, the output shaft of the third cylinder 801 drives the third connecting plate 802 to move, the back side of the third connecting plate 802 is fixed to the third motor 803, the output shaft of the third motor 803 passes through and extends to the front side of the third connecting plate 802, and is fixed to a support frame 804, the inner side of the support frame 804 is fixed with a limiting frame 805, the output shaft of the third connecting plate 802 drives the support frame 804 to move so that the limiting frame 805 is aligned with the position of the cigarette box, the push plate 514 pushes the cigarette box into the limiting frame 805, and then opens the third motor 803. The output shaft of the third motor 803 drives the support frame 804 to rotate, and the support frame 804 drives the limiting frame 805 to rotate, so that the limiting frame 805 is flipped 180°. The front of the support frame 804 is fixed with a fourth cylinder 806, and the output shaft of the fourth cylinder 806 is hinged with a rotating block 807 through a hinge shaft. The output shaft of the fourth cylinder 806 drives the rotating block 807 to move, and the front of the support frame 804 is hinged with a rotating shaft 808 through a hinge shaft. The rotating block 807 drives the rotating shaft 808 to rotate. The back of the rotating block 807 is fixed to the outer side of the rotating shaft 808, and a baffle 809 is fixed to the outer side of the rotating shaft 808. The rotation of the rotating shaft 808 drives the baffle 809 to rotate, so that the limiting frame 805 is opened, and the cigarette box inside is separated from the cigarettes and falls out, thereby completing the unpacking of the cigarette box.

[0028] In this example, the support frame 804 and the limiting frame 805 are both C-shaped with openings facing downward. The length and width of the baffle 809 are respectively adapted to the length and width of the limiting frame 805 to control the falling of the cigarette box.

[0029] The working principle of the above embodiment is:

[0030] (1) First, open the second linear module 501 and the third linear module 502, and adjust the position of the first connecting plate 503, thereby driving the clamping device 504 to move, so that the clamping device 504 moves to the top of the cigarette box, clamps the cut cigarette box, and moves the cigarette box to the inner side of the limit plate 510. Then, turn on the first motor 508, and the output shaft of the first motor 508 drives the rotating plate 509 to rotate, and the rotating plate 509 drives the limit plate 510 to move, so that the cigarette box rotates 90°. Then, open the fourth linear module 506, and the fourth linear module 506 drives the second connecting plate 507 to move, thereby driving the cigarette box to the position of the second pneumatic suction plate 521.

[0031] (2) Then, the second cylinder 516 is opened, and the output shaft of the second cylinder 516 drives the connecting block 517 to move, causing the connecting block 517 to rotate, and the connecting block 517 drives the top plate 518 to move, and the top plate 518 drives the first pneumatic suction plate 519 to flip, and at the same time, the second motor 523 is opened, and the output shaft of the second motor 523 drives the rotating rod 524 to rotate, and the rotating rod 524 drives the third pneumatic suction plate 525 to rotate, thereby adsorbing the packaging of the cigarette box outward to prevent the cigarettes from adhering to the packaging of the cigarette box, and then the first cylinder 512 is opened, and the output shaft of the first cylinder 512 drives the fixing frame 513 to move, and the fixing frame 513 drives the push plate 514 to move, and the push plate 514 pushes the cigarette box to the right, and at the same time, the third cylinder 801 is opened, and the third cylinder 802 is opened. The output shaft of 01 drives the third connecting plate 802 to move, and the output shaft of the third connecting plate 802 drives the support frame 804 to move, so that the limit frame 805 is aligned with the position of the cigarette box, and the push plate 514 pushes the cigarette box into the limit frame 805, and then the third motor 803 is turned on, and the output shaft of the third motor 803 drives the support frame 804 to rotate, and the support frame 804 drives the limit frame 805 to rotate, so that the limit frame 805 is turned 180°, and then the fourth cylinder 806 is turned on, and the output shaft of the fourth cylinder 806 drives the rotating block 807 to move, and the rotating block 807 drives the rotating shaft 808 to rotate, and the rotation of the rotating shaft 808 drives the baffle 809 to rotate, so that the limit frame 805 is opened, and the cigarette box inside is separated from the cigarettes and falls out, thereby completing the unpacking of the cigarette box.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A cigarette box unpacking assembly for cigarette recovery and re-inspection, comprising a frame (1), a cutting unit (2) and a re-inspection unit (3), characterized in that: A first mounting plate (4) is provided inside the frame (1), a position limiting transfer mechanism (5) is provided on the back of the first mounting plate (4) for transferring the cut cigarette boxes, a first linear module (6) is provided above the first mounting plate (4), a second mounting plate (7) is fixed on the upper surface of the first linear module (6), and an unpacking mechanism (8) is provided on the front of the second mounting plate (7) for unpacking the cigarette boxes; The position limiting transfer mechanism (5) comprises a second linear module (501) fixed to the back of the first mounting plate (4), a third linear module (502) fixed to the right side of the second linear module (501), a first connecting plate (503) fixed to the front of the third linear module (502), a clamping device (504) fixed to the lower surface of the first connecting plate (503), a clamping plate (505) fixed to the output end of the clamping device (504), a fourth linear module (506) fixed to the front of the first mounting plate (4), a second connecting plate (507) fixed to the front of the fourth linear module (506), and a first connecting plate (507) fixed to the lower surface of the second connecting plate (507). The motor (508) is provided with a first motor (508), the output shaft of the first motor (508) passes through and extends to the upper side of the second connecting plate (507), and is fixed with a rotating plate (509), three limit plates (510) are fixed on the upper surface of the rotating plate (509), a support plate (511) is fixed on the back side of the second connecting plate (507), a first cylinder (512) is fixed on the back side of the support plate (511), the output shaft of the first cylinder (512) is fixed with a fixing frame (513), a push plate (514) is fixed on the left side of the fixing frame (513), a third mounting plate (515) is provided in front of the first mounting plate (4), and a separation component is provided on the right side of the third mounting plate (515).

2. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 1, characterized in that: The three limiting plates (510) are arranged in a C-shape on the upper surface of the rotating plate (509), and the distance between two opposite limiting plates (510) is adapted to the thickness of the cigarette box.

3. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 2, characterized in that: An opening is provided on the left side of the third mounting plate (515), and the length of the opening is greater than the distance between the two relative limiting plates (510).

4. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 1, characterized in that: The separation assembly comprises a second cylinder (516) fixed on the right side of the third mounting plate (515); the output shaft of the second cylinder (516) is fixed with a connecting block (517); the lower surface of the connecting block (517) is hinged with a top plate (518) via a hinge shaft; the outer side of the top plate (518) is hinged with a first pneumatic suction plate (519) via a hinge shaft; the back side of the third mounting plate (515) is fixed with a mounting block (520); the first pneumatic suction plate (519) and the mounting block (520) are connected to each other. The back of the mounting block (520) is hinged by a hinge shaft, a second pneumatic suction plate (521) is fixed to the lower surface of the mounting block (520), a mounting frame (522) is fixed to the lower surface of the second connecting plate (507), a second motor (523) is fixed to the back of the mounting frame (522), an output shaft of the second motor (523) passes through and extends to the inner side of the mounting frame (522), and is fixed with a rotating rod (524), and a third pneumatic suction plate (525) is fixed to the outer side of the rotating rod (524).

5. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 4, characterized in that: There are two mounting blocks (520), which are symmetrically distributed front to back about the central axis of the third mounting plate (515), and the distance between the two second pneumatic suction plates (521) is adapted to the thickness of the cigarette box.

6. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 1, characterized in that: The unpacking mechanism (8) comprises a third cylinder (801) fixed on the front of the second mounting plate (7); the output shaft of the third cylinder (801) is fixed to a third connecting plate (802); the back of the third connecting plate (802) is fixed to a third motor (803); the output shaft of the third motor (803) passes through and extends to the front side of the third connecting plate (802) and is fixed to a support frame (804); a limiting frame (805) is fixed on the inner side of the support frame (804); a fourth cylinder (806) is fixed on the front of the support frame (804); the output shaft of the fourth cylinder (806) is hinged to a rotating block (807) via a hinge shaft; the front of the support frame (804) is hinged to a rotating shaft (808) via a hinge shaft; the back of the rotating block (807) is fixed to the outer side of the rotating shaft (808); and a baffle (809) is fixed to the outer side of the rotating shaft (808).

7. The cigarette box unpacking assembly for cigarette recovery and re-inspection according to claim 6, characterized in that: The support frame (804) and the limiting frame (805) are both C-shaped with their openings facing downwards, and the length and width of the baffle (809) are respectively adapted to the length and width of the limiting frame (805).

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