Orbital transfer sampling device for cigarette packaging tightness online detection

Abstract

The utility model discloses an orbital transfer sampling device for cigarette packaging tightness online detection, and belongs to the technical field of tobacco industry detection. Comprising a multi-stage conveying mechanism, a tachometer wheel, an orbital transfer system, a feeding unit, a manipulator and a small box sealing performance detection unit, every two adjacent stages in the multi-stage conveying mechanism are connected through a track transfer system, the conveying direction of the feeding unit is the same as that of the multi-stage conveying mechanism, and the tail of the multi-stage conveying mechanism is connected with the head of the feeding unit through the track transfer system. The tachometer wheel is arranged on the multi-stage conveying mechanism; the manipulator is arranged on one side of the tail end of the feeding unit, the small box sealing performance detection unit is arranged at the tail end of the feeding unit, and the manipulator is used for transferring a to-be-detected small box from the feeding unit to the small box sealing performance detection unit for sealing performance detection and taking out the to-be-detected small box from the small box sealing performance detection unit. The detection device realizes on-line sampling and continuous detection of the sealing performance, and is convenient for improving the detection efficiency of the sealing performance of the small box in a laboratory link.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco industry detection, and in particular relates to a track-changing sampling device for online detection of cigarette packaging sealing. Background Art

[0002] The sealing of cigarette packaging is an important control indicator in the product production process. The sealing of packaging directly affects the migration rate of the moisture content of the finished cigarettes with the environment. Due to factors such as long-distance transportation and uncontrollable environmental temperature and humidity during storage, and the long sales cycle of some cigarettes, it is easy to cause problems such as tobacco mold, yellow spots on cigarettes or decreased moisture content, increased short positions and decreased sensory quality, affecting product quality and brand image.

[0003] Therefore, during the production process, the sealing of small cigarette boxes is tested and monitored by random inspection on each shift and each machine. For cigarette factories with many brands or large production volumes, the frequency of random inspection can only be achieved once per shift. During the operation of the packaging equipment, there are fluctuations in the high-speed transmission of each component, which leads to large fluctuations in the sealing of the packaging. Random inspections cannot achieve real-time monitoring of packaging quality and timely response from the equipment maintenance team, and the management and control results are not obvious.

[0004] At the same time, when the laboratory needs to perform comparative experiments on multiple parameters and a large number of samples, it is necessary to improve the experimental efficiency. The sealing detection of sealed small boxes needs to be able to be performed automatically and continuously. Therefore, it is necessary to design a small box sealing detection device that can be performed online and continuously to solve this problem. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a track-changing sampling device for online detection of cigarette packaging sealing. The purpose of the utility model is to design a device that can realize continuous online sealing detection in response to the shortcomings of the existing technology, so as to improve the efficiency of online detection of small box sealing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0007] A track-changing sampling device for online testing of cigarette packaging sealing, comprising a multi-stage conveying mechanism, a speed measuring wheel, a track-changing transfer system, a loading unit, a manipulator, and a small box sealing testing unit;

[0008] The adjacent two levels of the multi-stage conveying mechanism are connected by a track transfer system to realize the transmission of the small box to be tested. The feeding unit and the multi-stage conveying mechanism have the same conveying direction. The tail of the multi-stage conveying mechanism and the head of the feeding unit are also connected by a track transfer system to realize the transmission of the small box to be tested from the multi-stage conveying mechanism to the feeding unit. The speed measuring wheel is provided on the multi-stage conveying mechanism;

[0009] The manipulator is arranged at one side of the end of the loading unit, and the small box sealing detection unit is arranged at the end of the loading unit. The manipulator is used to transfer the small box to be tested from the loading unit to the small box sealing detection unit for sealing detection, and to take the small box to be tested out of the small box sealing detection unit.

[0010] Among them, the multi-level conveying mechanism includes at least two levels of incoming material horizontal conveyors arranged from high to low, the conveying directions of the two adjacent incoming material horizontal conveyors are opposite, and the tail end and the head end of the two adjacent incoming material horizontal conveyors are connected by a track transfer system; the speed measuring wheel is arranged in the middle section of the incoming material horizontal conveyor on the lowest level and is used to detect the conveying speed of the incoming material conveyor.

[0011] Furthermore, the track change transfer system is arranged between the incoming material horizontal conveyor and the loading unit; the track change transfer system includes a bracket structure, a swing mechanism, a drive motor, a track control system and a double-arc track body connected between the incoming material horizontal conveyor and the loading unit; the bracket structure is fixed on the side of the head end of the loading unit as a frame of the movable track, and the drive motor is fixed on the bracket structure. The drive motor drives the swing mechanism to drive the double-arc track body to complete the horizontal straight line movement along the track; the track control system includes a fiber optic sensor, which is arranged in the middle section of the double-arc track body and is used to sense the position of the small box to be tested.

[0012] Furthermore, the double-arc track body is a track structure composed of inner and outer coaxial double arcs, and the small box to be tested can move between the inner and outer double-arc tracks.

[0013] Furthermore, the swing mechanism is a crank slider mechanism, which is used to realize the linear reciprocating motion of the track body, that is, the track is moved out and reset horizontally; one end of the crank of the swing mechanism is hinged to the bracket structure, and the slider at the other end of the swing mechanism is adapted to slide with the horizontal track on the upper part of the bracket structure, the double-arc track body is fixedly connected to the slider, and the long groove in the middle of the connecting rod of the swing mechanism is connected to the output shaft of the drive motor through a short connecting rod.

[0014] Wherein, the loading unit includes a horizontal loading conveyor, which is a horizontal conveyor belt. A guide rod is provided on the surface of the loading unit along the length direction of the loading unit to limit the moving direction of the small box to be tested.

[0015] Furthermore, a small box positioning component is provided at the tail end of the loading unit. The small box positioning component is preferably a fiber optic sensor. The small box positioning component is used to associate with a manipulator to accurately grab the small box to be tested.

[0016] Furthermore, the operating end of the manipulator is configured with a camera and a suction cup, the camera is used to determine the placement angle of the small box to be tested, and the suction cup is used to adsorb the small box to be tested.

[0017] Furthermore, the small box sealing detection unit includes a base, a sealing cabin, a pressure cover, a linear module, a vertical pressure mechanism, a vacuum mechanism and a pressure differential sensor;

[0018] The sealed cabin is arranged on the base and has an open top. The sealed cabin is used to store the small box to be tested. The vacuum pumping mechanism is connected to the interior of the sealed cabin for vacuuming.

[0019] The linear module is mounted on the base, the vertical pressure mechanism is mounted on the action end of the linear module, and the pressure cover is mounted on the action end of the vertical pressure mechanism. The linear module cooperates with the vertical pressure mechanism to close the pressure cover on the top of the sealed cabin to seal the sealed cabin.

[0020] The pressure difference sensor is connected to the sealed cabin and is used to detect pressure changes in the sealed cabin.

[0021] The advantages of this utility model compared with the prior art are:

[0022] This solution realizes the continuous supply of small boxes to be tested by setting up a multi-level conveying mechanism, a track transfer system, a loading unit and a robot. The robot operates the small boxes to be tested to perform sealing tests in the sealing test unit and takes them out after the test is completed. This realizes the batch sealing test function of small boxes to be tested in a small range. It has the advantages of online sampling and continuous sealing testing, and provides technical support for online monitoring of packaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural diagram of the utility model of the track-changing sampling online detection device for the sealing degree of small and medium-sized boxes.

[0024] Figure 2 It is a front view of the utility model of the on-line detection device for the sealing degree of small and medium-sized boxes with track-changing sampling.

[0025] Figure 3 It is a top view of the track-changing sampling online detection device for the sealing degree of small and medium-sized boxes of the utility model.

[0026] Figure 4 It is a front view of the track-changing and sampling online detection device for the sealing degree of small and medium-sized boxes of the utility model after translation and track change.

[0027] Figure 5 It is a top view of the track-changing and sampling online detection device for the sealing degree of small and medium-sized boxes of the utility model after translation and track changing.

[0028] Figure 6It is a front view of the track change transfer system of the track change sampling online detection device for the sealing degree of small and medium-sized boxes of the utility model.

[0029] Figure 7 It is a side view of the track-changing transfer system of the track-changing sampling online detection device for the sealing degree of small and medium-sized boxes of the utility model.

[0030] In the figure: 1. Multi-stage conveying mechanism; 2. Speed measuring wheel; 3. Track transfer system; 4. Loading unit; 5. Robot; 6. Small box sealing detection unit; 7. Small box to be tested; 11. Incoming material horizontal conveyor; 31. Support structure; 32. Swing mechanism; 33. Drive motor; 34. Fiber optic sensor; 35. Industrial control host; 36. Double-arc track body; 41. Loading horizontal conveyor; 42. Guide rod; 43. Fiber optic sensor; 51. Camera; 52. Suction cup; 61. Base; 62. Sealed cabin; 63. Pressure cover; 64. Linear module; 65. Vertical pressure mechanism; 66. Vacuum mechanism; 67. Pressure differential sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying 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.

[0032] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0033] See also Figure 1-7 , describe the embodiments of the present utility model in detail.

[0034] like Figure 1-5 As shown, the track-changing sampling device for online detection of cigarette packaging sealing comprises a multi-stage conveying mechanism 1, a speed measuring wheel 2, a track-changing transfer system 3, a loading unit 4, a manipulator 5 and a small box sealing detection unit 6;

[0035] The adjacent two levels in the multi-level conveying mechanism 1 are connected by a track change transfer system 3 to realize the transmission of the small box 7 to be tested. The loading unit 4 and the multi-level conveying mechanism 1 have the same conveying direction. The tail of the multi-level conveying mechanism 1 and the head of the loading unit 4 are also connected by a track change transfer system 3 to realize the transmission of the small box 7 to be tested from the multi-level conveying mechanism 1 to the loading unit 4; the speed measuring wheel 2 is arranged on the multi-level conveying mechanism 1.

[0036] The manipulator 5 is arranged at one side of the end of the loading unit 4, and the small box sealing detection unit 6 is arranged at the end of the loading unit 4. The manipulator 5 is used to transfer the small box 7 to be tested from the loading unit 4 to the small box sealing detection unit 6 for sealing detection, and to take the small box 7 to be tested out of the small box sealing detection unit 6.

[0037] This embodiment realizes the continuous supply of small boxes to be tested by setting up a multi-level conveying mechanism, a track transfer system, a loading unit and a robot. The robot operates the small boxes to be tested to perform sealing testing in the sealing testing unit and takes them out after the testing is completed, thereby realizing the batch sealing testing function of small boxes to be tested in a small range, and has the advantages of online sampling and continuous sealing testing.

[0038] In a specific embodiment, the multi-stage conveying mechanism 1 includes at least two levels of incoming material horizontal conveyors 11 arranged from high to low. In this embodiment, the incoming material horizontal conveyors 11 are horizontal conveyor belts arranged as two-stage horizontal conveyors. The conveying directions of two adjacent incoming material horizontal conveyors 11 are opposite, and the tail ends and head ends of the two adjacent incoming material horizontal conveyors 11 are connected by a track transfer system 3. The speed measuring wheel 2 is located in the middle section of the lowest level incoming material horizontal conveyor 11 and is used to detect the conveying speed of the incoming material conveyor.

[0039] In a specific embodiment: Figure 6-7 As shown, the track change transfer system 3 is arranged between the incoming material horizontal conveyor 11 and the loading unit 4; the track change transfer system 3 includes a support structure 31, a swing mechanism 32, a drive motor 33, a track control system and a double-arc track body 36 connected between the incoming material horizontal conveyor 11 and the loading unit 4, which is used to transfer the small box 7 to be tested to the loading unit 4.

[0040] In this embodiment, the support structure 31 serves as the frame of the movable track to support the track body. The support structure 31 is fixed on one side of the head end of the loading unit 4. The drive motor 33 is fixed on the support structure 31. The drive motor 33 drives the swing mechanism 32 to drive the double-arc track body 36 to complete the horizontal straight line movement along the track; the track control system includes a fiber optic sensor 34 and an industrial control host 35. The speed measuring wheel 2, the drive motor 33 and the fiber optic sensor 34 are connected through the industrial control host 35 to sense the position of the small box 7 to be tested, and start the swing mechanism 32 to accurately change the small box running track and transfer it to the loading unit 4.

[0041] In this embodiment, the optical fiber sensor 34 is disposed in the middle section of the double-arc track body 36 to sense that the small box 7 to be tested is at the starting point of the swing mechanism 32 .

[0042] In this embodiment, the double-arc track body 36 is a track structure composed of two coaxial arcs, and the test box 7 can move between the inner and outer double-arc tracks. After the test box 7 reaches the starting point of the swing mechanism 32, the drive motor 33 drives the swing mechanism 32 and the test box 7 to move in the same direction. Under the action of potential energy and inertia, the test box 7 enters the loading unit 4.

[0043] In the initial position, the upper end of the double-arc track body 36 extends to the tail of the upper incoming horizontal conveyor 11 and forms an inlet with the upper surface of the upper incoming horizontal conveyor 11, and the lower end of the double-arc track body 36 extends to the upper surface of the lower incoming horizontal conveyor 11 to form an outlet.

[0044] After the double-arc track body 36 moves linearly along the conveying direction of the loading unit 4 , the lower end of the double-arc track body 36 extends to the upper surface of the loading unit 4 to form an outlet.

[0045] In this embodiment, the swing mechanism 32 is a slider-crank mechanism, which is used to achieve linear reciprocating motion of the track body, that is, horizontal extension and horizontal reset of the track. Specifically, one end of the crank of the swing mechanism 32 is hinged to the support structure 31, and the slider at the other end of the swing mechanism 32 is adapted to slide with the horizontal track on the upper portion of the support structure 31. The double-arc track body 36 is fixedly connected to the slider. The long slot in the middle of the connecting rod of the swing mechanism 32 is connected to the output shaft of the drive motor 33 via a short connecting rod. One end of the short connecting rod slides in the long slot, and the other end of the short connecting rod is fixedly connected to the output shaft of the drive motor 33.

[0046] In a specific embodiment: Figure 1-5As shown, the loading unit 4 includes a horizontal loading conveyor 41 with a positioning function. The horizontal loading conveyor 41 is a horizontal conveyor belt. The surface of the loading unit 4 is provided with a guide rod 42 arranged along the length of the loading unit 4 to limit the travel direction of the small box 7 to be tested. When the small box 7 to be tested rushes to the guide rod 42, it is intercepted and stopped, and the specific position of the small box to be tested is restricted to the guide rod 42.

[0047] In this embodiment, a small box positioning component 43 is provided at the tail end of the loading unit 4. The small box positioning component 43 is preferably a fiber optic sensor. The small box positioning component 43 is used to accurately grasp the small box 7 to be tested in conjunction with the manipulator 5.

[0048] In a specific embodiment, the operating end of the manipulator 5 is equipped with a camera 51 and a suction cup 52. The camera 51 is used to determine the placement angle of the small box 7 to be tested, and the suction cup 52 is used to absorb the small box 7 to be tested. The placement angle and position of the small box 7 to be tested are obtained by the camera, and then the manipulator 5 and the suction cup 52 are used to grab the small box to be tested at the correct angle and place it into the small box sealing detection unit 6 at the correct angle.

[0049] In a specific embodiment: the small box sealing detection unit 6 includes a base 61, a sealing cabin 62, a pressure cover 63, a linear module 64, a vertical pressure mechanism 65, a vacuum mechanism 66 and a pressure difference sensor 67;

[0050] The sealed cabin 62 is provided on the base 61 and has an open top. The sealed cabin 62 is used to store the small box 7 to be tested. The vacuum pumping mechanism 66 is connected to the interior of the sealed cabin 62 for vacuuming.

[0051] The linear module 64 is mounted on the base 61, the vertical pressure mechanism 65 is mounted on the action end of the linear module 64, and the pressure cover 63 is mounted on the action end of the vertical pressure mechanism 65. The linear module 64 cooperates with the vertical pressure mechanism 65 to close the pressure cover 63 on the top of the sealed cabin 62, thereby sealing the sealed cabin 62.

[0052] The differential pressure sensor 67 is in communication with the sealed cabin 62 and is used to detect pressure changes in the sealed cabin 62 .

[0053] The working principle of this track-changing sampling device specifically includes the following steps:

[0054] Step 1): The small boxes 7 to be tested are placed in batches and at intervals on the input side of the multi-stage conveying mechanism 1, ready for testing;

[0055] Step 2): The speed measuring wheel 2 in the horizontal conveyor of the lowest layer detects the running speed of the horizontal conveyor, and the optical fiber sensor 34 detects the position of the small box 7 to be tested. After this information is obtained and calculated by the industrial control host 35, a driving signal is formed and sent to the track transfer system 3;

[0056] Step 3): The swing mechanism 32 on the track transfer system 3 uses the calculated data to make the small box 7 to be tested pass through the range of the swing mechanism 32, and the drive motor 33 is started to drive the swing mechanism 32 to drive the double-arc track body 36 to move horizontally. During the translation process of the double-arc track body 36, the small box 7 to be tested is moved parallel to the loading horizontal conveyor 41;

[0057] Step 4): The guide rod 42 provided on the loading unit 4 limits the position of the small box 7 to be tested to a specific position, and the detection component 43 at the end of the loading unit 4 detects the specific position of the small box 7 to be tested and transmits the signal to the robot 5;

[0058] Step 5): The robot 5 uses the camera 51 and the suction cup 52 to grab the small box 7 to be tested at the correct angle and put it into the sealed cabin 62;

[0059] Step 6): The small box sealing detection unit 6 seals the pressure cover 6 on the sealing chamber 62, and then starts the vacuum mechanism 66 to vacuum the sealing chamber 62 until the set negative pressure value is reached, stops the suction and cuts off the passage, and uses the differential pressure sensor 67 to observe the pressure difference in the sealing chamber 62 to determine the sealing of the small box; wherein, the passage switching between the vacuum mechanism 66 and the differential pressure sensor 67 is achieved by a switching valve;

[0060] Step 7): After the test is completed, the pressure cover 63 is opened, and the robot 5 places the tested small box on the loading unit 4. The loading unit 4 is reversed or continues to move along the loading unit to transfer the small box away; or the robot 5 transfers it to other recycling locations.

[0061] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference numerals in the claims should not be construed as limiting the claims to which they relate.

[0062] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A track-changing sampling device for online detection of cigarette packaging sealing, characterized by: It includes a multi-stage conveying mechanism (1), a speed measuring wheel (2), a track transfer system (3), a loading unit (4), a manipulator (5) and a small box sealing detection unit (6); The adjacent two stages in the multi-stage conveying mechanism (1) are connected by a track change transfer system (3) to realize the transmission of the small box (7) to be tested; the feeding unit (4) and the multi-stage conveying mechanism (1) have the same conveying direction; the tail of the multi-stage conveying mechanism (1) and the head of the feeding unit (4) are connected by a track change transfer system (3) to realize the transmission of the small box (7) to be tested from the multi-stage conveying mechanism (1) to the feeding unit (4); the speed measuring wheel (2) is provided on the multi-stage conveying mechanism (1); The manipulator (5) is arranged at one side of the end of the loading unit (4), and the small box sealing detection unit (6) is arranged at the end of the loading unit (4). The manipulator (5) is used to transfer the small box (7) to be tested from the loading unit (4) to the small box sealing detection unit (6) for sealing detection, and to take the small box (7) to be tested out of the small box sealing detection unit (6).

2. The track-changing sampling device for online detection of cigarette package sealing according to claim 1, characterized in that: The multi-stage conveying mechanism (1) comprises at least two levels of incoming material horizontal conveyors (11) arranged from high to low, the conveying directions of two adjacent incoming material horizontal conveyors (11) are opposite, and the tail ends and the head ends of the two adjacent incoming material horizontal conveyors (11) are connected through a track transfer system (3); the speed measuring wheel (2) is arranged in the middle section of the incoming material horizontal conveyor (11) on the lowest level and is used to detect the conveying speed of the incoming material conveyor.

3. The track-changing sampling device for online detection of cigarette package sealing according to claim 2, characterized in that: The track change transfer system (3) is arranged between the incoming material horizontal conveyor (11) and the loading unit (4); the track change transfer system (3) includes a support structure (31), a swing mechanism (32), a drive motor (33), a track control system and a double-arc track body (36) connected between the incoming material horizontal conveyor (11) and the loading unit (4); the support structure (31) is fixed to one side of the head end of the loading unit (4) as a frame of the movable track, and the drive motor (33) is fixed on the support structure (31). The drive motor (33) drives the swing mechanism (32) to drive the double-arc track body (36) to complete the horizontal linear movement along the track; the track control system includes an optical fiber sensor (34), and the optical fiber sensor (34) is arranged in the middle section of the double-arc track body (36) and is used to sense the position of the small box (7) to be tested.

4. The track-changing sampling device for online detection of cigarette package sealing according to claim 3, characterized in that: The double-arc track body (36) is a track structure composed of inner and outer coaxial double arcs, and the small box to be tested (7) can move between the inner and outer double-arc tracks.

5. The track-changing sampling device for online detection of cigarette package sealing according to claim 3, characterized in that: The swing mechanism (32) is a crank slider mechanism, which is used to realize the linear reciprocating motion of the track body, that is, the track is horizontally moved out and reset; one end of the crank of the swing mechanism (32) is hinged to the bracket structure (31), and the slider at the other end of the swing mechanism (32) is adaptively slidably connected to the horizontal track on the upper part of the bracket structure (31); the double-arc track body (36) is fixedly connected to the slider, and the long groove in the middle of the connecting rod of the swing mechanism (32) is connected to the output shaft of the drive motor (33) through a short connecting rod.

6. The track-changing sampling device for online detection of cigarette package sealing according to claim 1, characterized in that: The loading unit (4) includes a loading horizontal conveyor (41), which is a horizontal conveyor belt. A guide rod (42) is provided on the surface of the loading unit (4) along the length direction of the loading unit (4) for limiting the moving direction of the small box (7) to be tested.

7. The track-changing sampling device for online detection of cigarette package sealing according to claim 6, characterized in that: The tail end of the loading unit (4) is provided with a small box positioning component (43), the small box positioning component (43) is an optical fiber sensor, and the small box positioning component (43) is used to associate with the manipulator (5) to accurately grasp the small box (7) to be tested.

8. The track-changing sampling device for online detection of cigarette package sealing according to claim 1, characterized in that: The operating end of the manipulator (5) is provided with a camera (51) and a suction cup (52), wherein the camera (51) is used to determine the placement angle of the small box (7) to be tested, and the suction cup (52) is used to absorb the small box (7) to be tested.

9. The track-changing sampling device for online detection of cigarette package sealing according to claim 1, characterized in that: The small box sealing detection unit (6) includes a base (61), a sealing chamber (62), a pressure cover (63), a linear module (64), a vertical pressure mechanism (65), a vacuum mechanism (66) and a pressure difference sensor (67); The sealed cabin (62) is arranged on the base (61) and has an open top. The sealed cabin (62) is used to store the small box (7) to be tested. The vacuum pumping mechanism (66) is connected to the interior of the sealed cabin (62) for vacuuming. The linear module (64) is mounted on the base (61), the vertical pressure mechanism (65) is mounted on the action end of the linear module (64), the pressure cover (63) is mounted on the action end of the vertical pressure mechanism (65), and the linear module (64) cooperates with the vertical pressure mechanism (65) to close the pressure cover (63) on the top of the sealed cabin (62) to seal the sealed cabin (62); The differential pressure sensor (67) is in communication with the sealed cabin (62) and is used to detect pressure changes within the sealed cabin (62).

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