Cigarette suction resistance detection device
By designing an automated cigarette suction resistance detection device, continuous detection of cigarette samples is achieved using a switching motor and a limit positioning mechanism. This solves the problems of discontinuous detection process and inaccurate detection results, and improves detection efficiency and reliability.
Patent Information
- Application Number
- CN202521909886.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-05
AI Technical Summary
Existing cigarette draw resistance testing equipment suffers from problems such as discontinuous testing process, frequent manual sample changes, low testing throughput, and poor accuracy and repeatability of test results.
A cigarette draw resistance detection device was designed. It uses a switching motor to drive the switching disk to rotate, combined with a limiting mechanism and a positioning mechanism, to realize the automated and continuous detection of cigarette samples. Multiple detection mechanisms sequentially perform draw resistance detection on cigarette samples, reducing human operation errors.
It enables efficient and continuous detection of cigarette samples, increases detection throughput, ensures the accuracy and repeatability of detection results, and reduces errors introduced by manual operation.
Smart Images
Figure CN224682047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cigarette sample detection technology, and in particular to a cigarette draw resistance detection device. Background Technology
[0002] In the process of cigarette production and R&D experiments, draw resistance is one of the key indicators for measuring cigarette quality. It directly affects the consumer's smoking experience and the combustion characteristics of cigarettes. Therefore, it is essential to conduct accurate and efficient testing of cigarette draw resistance.
[0003] Currently, most common laboratory cigarette draw resistance testing equipment is based on a single-sample sequential testing mode, requiring manual operation of sample loading, positioning, sealing, starting, and unloading for each test. This method has two major limitations: first, the testing process is discontinuous, with frequent manual sample changes leading to low throughput and difficulty in meeting the rapid testing needs of large batches of samples; second, manual placement and positioning operations can easily introduce inconsistencies in force and position, potentially causing poor sealing or positioning misalignment, thus affecting the accuracy and repeatability of the test results.
[0004] Therefore, there is an urgent need for a cigarette draw resistance detection device to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this invention is to provide a cigarette draw resistance detection device to achieve continuous and high-precision detection of cigarette draw resistance in a cigarette testing laboratory.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A cigarette draw resistance detection device, comprising:
[0008] The testing platform includes a base plate and a vertical plate perpendicularly connected to the base plate;
[0009] The switching mechanism includes a switching motor and a switching disk. The switching motor is installed on one side of the vertical plate, and its output shaft passes through the vertical plate and is connected to the switching disk. The outer periphery of the switching disk is provided with a plurality of placement compartments for placing cigarette samples.
[0010] Multiple limiting mechanisms are respectively set on multiple placement compartments to selectively limit or release cigarette samples in the corresponding placement compartments;
[0011] Multiple testing units are spaced apart on one side of the switching disk, and each of the multiple testing units corresponds to one of the multiple placement compartments;
[0012] The positioning mechanism is located on the base plate, on the side of the switching disk away from the detection mechanism;
[0013] The switching motor drives the switching disk to rotate, and through the positioning mechanism, it cooperates with one of the detection mechanisms to seal and fix the cigarette samples in the corresponding placement compartment, so that each of the detection mechanisms can sequentially perform suction resistance detection on the cigarette samples in the corresponding placement compartment.
[0014] As an optional solution for the cigarette draw resistance detection device, the limiting mechanism includes:
[0015] The limiting block, in conjunction with the placement compartment, forms a receiving cavity for holding cigarette samples;
[0016] A limiting drive component is connected to the limiting block and is used to drive the limiting block to cooperate with the placement chamber to limit or release the cigarette sample.
[0017] As an optional embodiment of the cigarette draw resistance detection device, the placement chamber includes two limiting grooves and a placement groove located between the two limiting grooves, and two limiting blocks are correspondingly provided;
[0018] The limiting drive component drives the limiting block to move downward and cooperate with the limiting groove, so that the two limiting blocks and the placement groove together form the receiving cavity;
[0019] The limiting drive component drives the limiting block to move upward and disengage from the limiting groove to release the cigarette sample.
[0020] As an optional solution for the cigarette draw resistance detection device, both the bottom of the limiting block and the placement groove are provided with limiting protrusions.
[0021] As an optional embodiment of the cigarette draw resistance detection device, the detection mechanism includes a functional box, in which a piston is slidably mounted. The piston divides the functional box into a first inner cavity and a second inner cavity. A pressure sensor is installed in the first inner cavity, and the first inner cavity can communicate with the receiving cavity. The second inner cavity is provided with an exhaust port.
[0022] The piston moves, and the pressure sensor detects the change in air pressure in the first inner cavity to detect the draw resistance of the cigarette sample.
[0023] As an optional solution for the cigarette draw resistance detection device, the detection mechanism also includes a sealing baffle located outside the functional box, and the sealing baffle has a connecting hole;
[0024] The limiting block is provided with a first sealing half-ring at one end near the detection mechanism, and the placement chamber is provided with a second sealing half-ring at one end near the detection mechanism. The first sealing half-ring and the second sealing half-ring are joined to form a central hole coaxial with the accommodating cavity. The connecting hole can be joined with the central hole; and it is connected to the first inner cavity through a connecting pipe.
[0025] As an optional embodiment of the cigarette draw resistance detection device, the detection mechanism further includes:
[0026] A detection drive unit is located on the side wall of the switching disk and is connected to the function box drive to drive the function box closer to or further away from the placement compartment.
[0027] As an optional solution for the cigarette draw resistance detection device, the detection mechanism further includes a guide rod and an elastic element, the guide rod and the elastic element being respectively connected to both sides of the piston, the guide rod passing through the functional box from the first inner cavity, and the elastic element being disposed in the second inner cavity;
[0028] The vertical plate is provided with a guide block, and the side of the guide block near the switching disk is set as a guide surface. The guide rod can abut against the guide surface to push the piston to compress the elastic element; the elastic element provides a restoring force to reset the piston.
[0029] As an optional solution for the cigarette draw resistance detection device, the positioning mechanism includes:
[0030] The positioning block is located on the side of the switching disk away from the detection mechanism;
[0031] A positioning drive component is disposed on the base plate and is drivenly connected to the positioning block, used to drive the positioning block to move vertically to position the cigarette sample.
[0032] As an optional solution for the cigarette draw resistance detection device, the cigarette draw resistance detection device further includes a controller, which is disposed on the base plate. The switching mechanism, the positioning mechanism, the plurality of limiting mechanisms and the plurality of detection mechanisms are all electrically connected to the controller.
[0033] The beneficial effects of this utility model are:
[0034] This utility model provides a cigarette draw resistance detection device. A switching motor is installed on one side of a vertical plate. The motor drives a switching disk with multiple circumferentially distributed placement chambers to rotate. This allows cigarette samples within the receiving cavities formed by the placement chambers and limiting mechanisms to sequentially engage with the positioning mechanisms, achieving sealing and fixation. The corresponding detection mechanism then performs draw resistance detection on the cigarette samples within the receiving cavities. While one receiving cavity is undergoing automatic detection, the operator can simultaneously load and unload samples in other placement chambers. This effectively solves the problem of low efficiency in traditional single-sample testing, enabling uninterrupted testing and significantly increasing the sample throughput per unit time. It is particularly suitable for batch testing of cigarette samples. Furthermore, it eliminates the need for manual positioning and fixing of cigarette samples, reducing human error. The precise positioning and stable sealing of cigarette samples are achieved through the cooperation of the positioning and detection mechanisms, completely avoiding random errors introduced by factors such as manual force and positional deviations. This improves the repeatability and reliability of measurement data, ensuring the accuracy of draw resistance detection results. Attached Figure Description
[0035] Figure 1 This is a first structural schematic diagram of the cigarette suction resistance detection device provided in a specific embodiment of this utility model;
[0036] Figure 2 This is a schematic diagram of the second structure of the cigarette suction resistance detection device provided in a specific embodiment of this utility model;
[0037] Figure 3 This is a cross-sectional schematic diagram of the cigarette suction resistance detection device provided in a specific embodiment of this utility model;
[0038] Figure 4 This is a schematic diagram showing the cooperation between the limiting mechanism and the placement chamber of the cigarette suction resistance detection device provided in a specific embodiment of this utility model;
[0039] Figure 5 This is a schematic diagram of the structure of the guide rod and guide block of the piston in the functional box of the cigarette suction resistance detection device provided in a specific embodiment of this utility model;
[0040] Figure 6 This is a schematic diagram of the structure of the cigarette suction resistance detection device provided in a specific embodiment of the present invention, showing that the accommodating cavity is connected to the first inner cavity through a sealing baffle.
[0041] In the picture:
[0042] 100. Cigarette samples;
[0043] 1. Testing table; 11. Vertical plate; 12. Base plate;
[0044] 2. Switching mechanism; 21. Switching motor; 22. Switching disc; 221. Placement compartment; 2211. Limiting groove; 2212. Placement groove; 2213. Second sealing half ring; 222. Mounting groove;
[0045] 3. Limiting mechanism; 31. Limiting block; 311. Limiting protrusion; 312. First sealing half-ring; 32. Limiting drive component; 33. Connecting rod;
[0046] 4. Detection mechanism; 41. Functional box; 411. First inner cavity; 412. Second inner cavity; 413. Exhaust port; 42. Piston; 43. Pressure sensor; 44. Sealing baffle; 441. Connecting hole; 45. Connecting pipe; 46. Detection drive component; 47. Guide rod; 48. Elastic component; 49. Guide block;
[0047] 5. Positioning mechanism; 51. Positioning block; 52. Positioning drive component;
[0048] 6. Controller. Detailed Implementation
[0049] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0051] This embodiment provides a cigarette draw resistance detection device for accurate and efficient detection of cigarette draw resistance during cigarette production and R&D testing.
[0052] like Figures 1-3As shown, the cigarette draw resistance detection device provided in this embodiment includes a detection platform 1, a switching mechanism 2, a positioning mechanism 5, a controller 6, multiple limiting mechanisms 3, and multiple detection mechanisms 4. The switching mechanism 2, positioning mechanism 5, and controller 6 are all installed on the detection platform 1. The multiple limiting mechanisms 3 and multiple detection mechanisms 4 are installed one-to-one on the switching mechanism 2. The switching mechanism 2 is used to switch the detection mechanisms 4 at the detection station, so that the multiple detection mechanisms 4 can cooperate with the positioning mechanism 5 in sequence to detect the cigarette sample 100 limited by the corresponding limiting mechanism 3. When the cigarette sample 100 is being detected, the other limiting mechanisms 3 can be operated independently for sample loading and unloading, so that the detection work can be carried out continuously without interruption, improving detection efficiency. At the same time, the positioning mechanism 5 and the detection mechanisms 4 cooperate to achieve precise positioning and stable sealing of the cigarette sample 100, ensuring the accuracy of the cigarette draw resistance detection structure.
[0053] In one embodiment, the detection station 1 includes a base plate 12 and a vertical plate 11 connected vertically to the base plate 12. The switching mechanism 2 is installed on the vertical plate 11 and located on one side of the vertical plate 11. The controller 6 is installed on the base plate 12 and located on the other side of the vertical plate 11.
[0054] The switching mechanism 2, positioning mechanism 5, multiple limit mechanisms 3, and multiple detection mechanisms 4 are all electrically connected to the controller 6. The controller 6 is used to control the actions of the switching mechanism 2, positioning mechanism 5, multiple limit mechanisms 3, and multiple detection mechanisms 4. The controller 6 is configured to coordinate and drive the sequential actions of the above-mentioned actuators according to a predetermined control logic, thereby completing an automated cyclic detection process.
[0055] In one embodiment, the switching mechanism 2 includes a switching motor 21 and a switching disk 22. The switching motor 21 is mounted on one side of the vertical plate 11, and its output shaft passes through the vertical plate 11 and is connected to the switching disk 22. The outer periphery of the switching disk 22 is provided with a plurality of placement compartments 221 for placing cigarette samples 100. When the switching motor 21 is started, the output shaft of the switching motor 21 drives the switching disk 22 to rotate, so that the placement compartments 221 around the switching disk 22 rotate sequentially to the detection position, thereby realizing the detection of cigarette samples 100 in the plurality of placement compartments 221.
[0056] Multiple limiting mechanisms 3 are correspondingly installed on multiple placement chambers 221 to selectively limit or release the cigarette samples 100 in the corresponding placement chamber 221. Each placement chamber 221 corresponds to one limiting mechanism 3. During sample loading, the cigarette sample 100 is first placed in the placement chamber 221, and then the limiting mechanism 3 is controlled to move towards the placement chamber 221 to cooperate with the placement chamber 221 to limit the cigarette sample 100. During sample unloading, the limiting mechanism 3 is controlled to move away from the placement chamber 221 to disengage from the placement chamber 221 and release the cigarette sample 100.
[0057] For example, three placement chambers 221 are provided, and the three placement chambers 221 are evenly arranged at a 120° angle along the circumference of the switching disk 22. Correspondingly, three limiting mechanisms 3 and three detection mechanisms 4 are also provided. This layout constitutes a highly efficient three-station cyclic detection system. The three stations are evenly distributed in space and, in conjunction with the stepping rotation of the switching disk 22, can smoothly execute three core processes in parallel: sample loading (placing a new cigarette sample 100) at one station, automatic detection at the next station, and sample unloading (removing the tested cigarette sample 100) at the third station. This achieves parallel operation and seamless connection of the sample loading, detection, and unloading processes, forming a continuous assembly line detection process, greatly optimizing the detection cycle time, eliminating waiting time between processes, and thus maximizing the overall detection efficiency.
[0058] Of course, in other embodiments, the placement chamber 221, the limiting mechanism 3, and the detection mechanism 4 can also be provided in greater quantities, such as four, five, or six.
[0059] In one embodiment, such as Figure 4 As shown, the limiting mechanism 3 includes a limiting block 31 and a limiting drive 32. The limiting block 31 cooperates with the placement chamber 221 to form a receiving cavity for accommodating the cigarette sample 100. The limiting drive 32 is driven to the limiting block 31 and is used to drive the limiting block 31 to cooperate with the placement chamber 221 to limit or release the cigarette sample 100. The controller 6 controls the action of the limiting drive 32, thereby realizing the automatic engagement or disengagement of the limiting block 31 with the placement chamber 221, so as to achieve automated sample loading and unloading and improve detection efficiency.
[0060] In one embodiment, combined with Figure 1 and Figure 4 The placement chamber 221 includes two limiting grooves 2211 and a placement groove 2212 located between the two limiting grooves 2211. Two limiting blocks 31 are correspondingly provided. The limiting drive member 32 drives the limiting blocks 31 downwards to engage with the limiting grooves 2211, so that the two limiting blocks 31 and the placement groove 2212 together form a receiving cavity. The limiting drive member 32 also drives the limiting blocks 31 upwards to disengage from the limiting grooves 2211, thereby releasing the cigarette sample 100. The two limiting blocks 31 simultaneously limit the cigarette sample 100, applying symmetrical limiting forces to ensure that the cigarette sample 100 is fixed in the center of the receiving cavity, effectively avoiding tilting, eccentricity, or deformation of the cigarette sample 100 that may result from unilateral limiting.
[0061] For example, the contour of the placement groove 2212 is a semi-circular groove that matches the shape of the cigarette sample 100. Each limiting block 31 has a 90° arc-shaped groove at its bottom that matches the shape of the cigarette sample 100. When two limiting blocks 31 are driven to approach each other until they contact, their adjacent sides are completely fitted together. At this time, the two 90° arc-shaped grooves combine to form another semi-circular groove. This combined semi-circular groove connects with the original semi-circular groove of the placement groove 2212, together forming a complete cylindrical placement cavity for covering and fixing the cigarette sample 100.
[0062] The limiting block 31 is set in an L shape, with the two L-shaped limiting blocks 31 facing away from each other. The limiting groove 2211 is adapted to the shape of the limiting block 31, so that the two L-shaped limiting blocks 31 move to cooperate with the two limiting grooves 2211 respectively. The bottom of the two limiting blocks 31 and the placement groove 2212 together form a receiving cavity adapted to the cigarette sample 100.
[0063] Two limit drive components 32 are provided, each of which drives a limit block 31. Each placement slot 2212 has a mounting slot 222 on each side for installing the limit drive component 32. The mounting slot 222 is connected to the limit slot 2211. The limit drive component 32 is a first electric push rod. The first electric push rod is connected to the limit block 31 through a connecting rod 33, so that the first electric push rod can push the limit block 31 up and down through the connecting rod 33. The first electric push rod pushes the limit block 31 upward, which can push the limit block 31 out of the limit slot 2211; the first electric push rod pulls the limit block 31 downward, which can pull the limit block 31 into the limit slot 2211 and cooperate with the limit slot 2211.
[0064] Of course, in other embodiments, the limiting block 31 can also be set as one, and the limiting drive member 32 is set outside the switching disk 22. One limiting drive member 32 drives one limiting block 31 to cooperate with the limiting groove 2211 to form a receiving cavity. Alternatively, two limiting blocks 31 can be set, and one limiting drive member 32 can be set. One limiting drive member 32 drives two limiting blocks 31 to move simultaneously.
[0065] In one embodiment, limiting protrusions 311 are provided at the bottom of the limiting block 31 and in the placement groove 2212. These limiting protrusions 311 automatically achieve radial positioning and locking after the cigarette sample 100 is inserted, effectively eliminating sample offset or loosening caused by manual placement deviations. By replacing manual adjustment with mechanical limiting, not only is human error during operation significantly reduced, but the cigarette sample 100 is also ensured to be in a consistent and precise position each time it is limited, thus guaranteeing the sealing reliability during testing. This enhances the posture stability of the cigarette sample 100 during testing, avoiding air leakage or pressure fluctuations due to insecure fixing, providing more stable and consistent testing conditions for suction resistance testing, and ultimately significantly improving the accuracy and repeatability of the test results.
[0066] In one embodiment, multiple detection mechanisms 4 are spaced apart on one side of the switching disk 22, with each detection mechanism 4 corresponding to one of the multiple placement compartments 221. A positioning mechanism 5 is mounted on the base plate 12, located on the side of the switching disk 22 furthest from the detection mechanisms 4. The switching motor 21 drives the switching disk 22 to rotate. Through the cooperation of the positioning mechanism 5 with one of the detection mechanisms 4, the cigarette sample 100 in the corresponding placement compartment 221 is sealed and fixed, allowing each detection mechanism 4 to sequentially perform suction resistance testing on the cigarette sample 100 in its respective placement compartment 221.
[0067] The detection mechanism 4 and the positioning mechanism 5 are located on opposite sides of the switching disk 22, ensuring that when any placement chamber 221 rotates to the detection station with the switching disk 22, it is precisely positioned on the axial clamping line of the detection mechanism 4 and the positioning mechanism 5. At the detection station, the positioning mechanism 5 operates to axially position the placement chamber 221 from one side; simultaneously, the detection mechanism 4 operates from the other side to precisely align with the other side of the already positioned placement chamber 221. The positioning mechanism 5 and the detection mechanism 4 work together to form a stable and reliable sealing clamping force on the accommodating cavity in the axial direction.
[0068] In one embodiment, the positioning mechanism 5 includes a positioning block 51 and a positioning drive 52. The positioning block 51 is located on the side of the switching disk 22 away from the detection mechanism 4. The positioning drive 52 is located on the base plate 12 and is drivenly connected to the positioning block 51 to drive the positioning block 51 to move vertically to position the cigarette sample 100. Specifically, the positioning block 51 includes a vertical positioning surface and an inclined positioning surface. The vertical positioning surface is in contact with the side of the switching disk 22, and the inclined positioning surface is located above the vertical positioning surface and extends upward inclinedly from the vertical positioning surface away from the switching disk 22. The positioning drive 52 drives the positioning block 51 to move upward. The inclined positioning surface first contacts the cigarette sample 100. As the positioning block 51 continues to move upward, the positioning block 51 can push the cigarette sample 100 in the accommodating cavity to move until the vertical positioning surface is in complete contact with the end of the cigarette sample 100, thereby achieving precise centering and axial positioning of the cigarette sample 100.
[0069] For example, the positioning drive 52 is a second electric push rod, the driving end of which is connected to the bottom of the positioning block 51 and is used to drive the positioning block 51 to move up and down. In order to ensure that the positioning block 51 does not deflect when moving up and down, three second electric push rods are provided at the bottom of the positioning block 51. The three second electric push rods drive the positioning block 51 to move up and down at the same time to ensure the balance of force on the positioning block 51.
[0070] In one embodiment, such as Figure 3 , Figure 5 and Figure 6 As shown, the detection mechanism 4 includes a functional box 41, within which a piston 42 is slidably mounted. The piston 42 divides the functional box 41 into a first inner cavity 411 and a second inner cavity 412. A pressure sensor 43 is installed in the first inner cavity 411 and is connected to the receiving cavity. An exhaust port 413 is installed in the second inner cavity 412. When the piston 42 moves, the pressure sensor 43 detects changes in the air pressure in the first inner cavity 411 to detect the draw resistance of the cigarette sample 100.
[0071] During testing, the testing mechanism 4 drives the piston 42 to move, creating a negative pressure in the first inner cavity 411. This negative pressure environment draws in the cigarette sample 100 in the accommodating cavity. During the drawing process, the pressure sensor 43 monitors the air pressure change in the first inner cavity 411 in real time and transmits the air pressure signal to the controller 6. The controller 6 calculates the draw resistance value of the cigarette sample 100 based on the received air pressure signal data.
[0072] This detection method directly generates suction power through piston 42, with a simple air path structure and rapid response. Furthermore, the pressure sensor 43 detects at close range, effectively reducing airflow fluctuations and signal delays, thereby significantly improving the accuracy and response efficiency of suction resistance detection.
[0073] In one embodiment, the detection mechanism 4 further includes a sealing baffle 44 disposed outside the functional box 41, the sealing baffle 44 having a connecting hole 441; a first sealing half-ring 312 is provided at one end of the limiting block 31 near the detection mechanism 4, and a second sealing half-ring 2213 is provided at one end of the placement chamber 221 near the detection mechanism 4. The first sealing half-ring 312 and the second sealing half-ring 2213 are joined to form a central hole coaxial with the accommodating cavity, and the connecting hole 441 can be joined with the central hole; and it is connected to the first inner cavity 411 through a connecting pipe 45. When the limiting block 31 and the limiting groove 2211 cooperate to form the accommodating cavity, the lower surface of the first sealing half-ring 312 and the upper surface of the second sealing half-ring 2213 are in contact, thereby sealing the filter part of the cigarette sample 100, increasing the sealing performance during the detection process, reducing air leakage caused by poor sealing, improving the reliability of the detection data of the pressure sensor 43, and ensuring the accuracy of the suction resistance detection results.
[0074] The sealing baffle 44 fits against the outer surfaces of the first sealing half-ring 312 and the second sealing half-ring 2213, so that the central hole aligns with the connecting hole 441, so that the accommodating cavity is connected to the first inner cavity 411 through the connecting pipe 45, thus preparing for the suction resistance detection.
[0075] In one embodiment, the detection mechanism 4 further includes a detection drive 46, which is disposed on the side wall of the switching disk 22 and is drivenly connected to the function box 41 to drive the function box 41 closer to or further away from the placement compartment 221. The detection drive 46 is a third electric push rod, which drives the function box 41 to move downward so that the sealing baffle 44 fits against the outer surfaces of the first sealing half-ring 312 and the second sealing half-ring 2213, and the connecting hole 441 on the sealing baffle 44 aligns with the central hole, thereby realizing the communication between the accommodating cavity and the first inner cavity 411.
[0076] For example, the detection drive 46 includes two third electric push rods, which are located on both sides of the sealing baffle 44 to ensure the stability of the function box 41 drive.
[0077] In one embodiment, the detection mechanism 4 further includes a guide rod 47 and an elastic element 48, which are respectively connected to both sides of the piston 42. The guide rod 47 extends out of the function box 41 from the first inner cavity 411, and the elastic element 48 is located in the second inner cavity 412. A guide block 49 is provided on the vertical plate 11. The side of the guide block 49 near the switching disk 22 is set as a guide surface. The guide rod 47 can abut against the guide surface to push the piston 42 to compress the elastic element 48; the elastic element 48 provides a restoring force to reset the piston 42. As the switching disk 22 rotates, moving the sealed cigarette sample 100 to the detection station, the guide rod 47 contacts the guide surface, causing the guide surface to press against the guide rod 47. The guide rod 47 then pushes the piston 42 to slide within the functional box 41, compressing the elastic element 48. Gas in the second inner cavity 412 is discharged through the exhaust port 413. The negative pressure environment created in the first inner cavity 411 draws air from the filter of the cigarette sample 100 inside the accommodating cavity through the connecting pipe 45. The pressure sensor 43 monitors the pressure in the first inner cavity 411 in real time and feeds the pressure signal back to the controller 6, thereby detecting the cigarette's draw resistance. After detection, as the switching disk 22 rotates, the guide rod 47 disengages from the guide surface, and the piston 42 resets under the restoring force of the elastic element 48. The switching disk 22 then rotates, moving the next cigarette sample 100 to the detection position, and this cycle repeats continuously to achieve continuous detection.
[0078] For example, the guide surface includes a vertical guide surface and an inclined guide surface. The vertical guide surface is located below the inclined guide surface, and the inclined guide surface is inclined upward from the vertical guide surface in a direction away from the detection mechanism 4. When the switching disk 22 rotates, the guide rod 47 first contacts the inclined guide surface, which pushes the piston 42 to compress the elastic element 48, so that the first inner cavity 411 forms a negative pressure environment until the switching disk 22 rotates to the point where the guide rod 47 contacts the vertical guide surface, and the detection ends; as the switching disk 22 continues to rotate, the guide rod 47 disengages from the vertical guide surface.
[0079] Furthermore, the abutting end of the guide rod 47 is set in a hemispherical shape to reduce the friction between the guide rod 47 and the guide surface and reduce wear.
[0080] During sample unloading, the control detection drive 46 drives the function box 41 to move upward, causing the sealing baffle 44 to disengage from the first sealing half ring 312 and the second sealing half ring 2213; at the same time, the control positioning drive 52 drives the positioning block 51 to move downward; then the control limit drive 32 drives the limit block 31 to move upward, so that the tested cigarette sample 100 can be exposed for easy removal.
[0081] The detection method of the cigarette draw resistance detection device provided in this embodiment is as follows: First, the cigarette sample 100 is placed in the placement groove 2212. The limiting drive 32 is controlled to drive the limiting block 31 to move downward so that the limiting block 31 is completely placed in the limiting groove 2211. The two limiting blocks 31 and the placement groove 2212 together form a receiving cavity. The bottom of the limiting block 31 and the limiting protrusion 311 in the placement groove 2212 limit the circumference of the cigarette sample 100. At the same time, the first sealing half ring 312 and the second sealing half ring 2213 are docked to perform preliminary positioning and sealing of the cigarette sample 100; and a central hole is formed after the first sealing half ring 312 and the second sealing half ring 2213 are docked. The switching motor 21 drives the switching disk 22 to rotate. When the cigarette sample 100, which is circumferentially limited, moves to the detection position, the control positioning drive 52 drives the positioning block 51 to move upward. The inclined positioning surface first contacts the cigarette sample 100. As the positioning block 51 continues to move upward, the inclined positioning surface pushes the cigarette sample 100 until the vertical positioning surface contacts the cigarette sample 100, thus achieving precise positioning of the cigarette sample 100. Then, the control detection drive 46 drives the function box 41 to move the sealing baffle 44 downward, so that the sealing baffle 44 fits with the first sealing half ring 312 and the second sealing half ring 2213, and the connecting hole 441 of the sealing baffle 44 aligns with the central hole, so that the accommodating cavity is connected to the first inner cavity 411 through the central hole, the connecting hole 441, and the connecting pipe 45. As the switching disk 22 rotates, the guide rod 47 contacts the inclined guide surface on the guide block 49 on the vertical plate 11. The inclined guide surface applies a force to the guide rod 47, causing it to move away from the vertical plate 11. This causes the piston 42 to compress the elastic element 48. During the movement of the piston 42, the gas in the second inner cavity 412 flows out through the exhaust port 413, creating a negative pressure environment in the first inner cavity 411. The filter of the cigarette sample 100 in the accommodating cavity is drawn through the connecting pipe 45. At this time, the pressure sensor 43 of the first inner cavity 411 detects the change in air pressure in the first inner cavity 411, thereby detecting the cigarette draw resistance. This continues until the guide rod 47 contacts the vertical guide surface, completing the detection. As the switching disk 22 rotates, the guide rod 47 disengages from the guide block 49, and the piston 42 resets under the restoring force of the elastic element 48. The switching motor 21 continues to drive the switching disk 22 to rotate for the detection of the next cigarette sample 100, thus achieving continuous detection.
[0082] The controller 6 internally stores a control program for executing the above-described cigarette draw resistance detection method. This control program contains a sequence of instructions that coordinate the operation of each mechanism. By executing this control program, the controller 6 achieves automated control of the detection process and continuous automated cyclic detection.
[0083] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. A cigarette draw resistance detection device, characterized in that, include: The testing platform (1) includes a base plate (12) and a vertical plate (11) perpendicularly connected to the base plate (12); The switching mechanism (2) includes a switching motor (21) and a switching disk (22). The switching motor (21) is installed on one side of the vertical plate (11), and its output shaft passes through the vertical plate (11) and is connected to the switching disk (22). The outer periphery of the switching disk (22) is provided with a plurality of placement compartments (221) for placing cigarette samples (100). Multiple limiting mechanisms (3) are respectively set on multiple placement chambers (221) to selectively limit or release cigarette samples (100) in the corresponding placement chambers (221); Multiple testing mechanisms (4) are arranged at intervals on one side of the switching disk (22), and the multiple testing mechanisms (4) correspond one-to-one with the multiple placement compartments (221); The positioning mechanism (5) is located on the base plate (12) on the side of the switching disk (22) away from the detection mechanism (4); The switching motor (21) drives the switching disk (22) to rotate. Through the positioning mechanism (5) and one of the detection mechanisms (4), the cigarette sample (100) in the corresponding placement compartment (221) is sealed and fixed, so that each of the detection mechanisms (4) sequentially performs suction resistance detection on the cigarette sample (100) in the corresponding placement compartment (221).
2. The cigarette draw resistance detection device according to claim 1, characterized in that, The limiting mechanism (3) includes: The limiting block (31) cooperates with the placement compartment (221) to form a receiving cavity for accommodating the cigarette sample (100); The limiting drive component (32) is driven to connect with the limiting block (31) and is used to drive the limiting block (31) to cooperate with the placement chamber (221) to limit or release the cigarette sample (100).
3. The cigarette draw resistance detection device according to claim 2, characterized in that, The placement compartment (221) includes two limiting grooves (2211) and a placement groove (2212) located between the two limiting grooves (2211), and two limiting blocks (31) are provided accordingly; The limiting drive (32) drives the limiting block (31) to move downward and cooperate with the limiting groove (2211), so that the two limiting blocks (31) and the placement groove (2212) together form the receiving cavity; The limiting drive (32) drives the limiting block (31) to move upward and disengage from the limiting groove (2211) to release the cigarette sample (100).
4. The cigarette draw resistance detection device according to claim 3, characterized in that, The bottom of the limiting block (31) and the placement groove (2212) are both provided with limiting protrusions (311).
5. The cigarette draw resistance detection device according to claim 2, characterized in that, The detection mechanism (4) includes a functional box (41), in which a piston (42) is slidably disposed. The piston (42) divides the functional box (41) into a first inner cavity (411) and a second inner cavity (412). A pressure sensor (43) is disposed in the first inner cavity (411), and the first inner cavity (411) can communicate with the receiving cavity. The second inner cavity (412) is provided with an exhaust port (413). The piston (42) moves, and the pressure sensor (43) detects the change in air pressure in the first inner cavity (411) to detect the draw resistance of the cigarette sample (100).
6. The cigarette draw resistance detection device according to claim 5, characterized in that, The detection mechanism (4) also includes a sealing baffle (44) located outside the functional box (41), and the sealing baffle (44) is provided with a connecting hole (441); The limiting block (31) is provided with a first sealing half ring (312) at one end near the detection mechanism (4), and the placement chamber (221) is provided with a second sealing half ring (2213) at one end near the detection mechanism (4). The first sealing half ring (312) and the second sealing half ring (2213) are connected to form a central hole coaxial with the accommodating cavity. The connecting hole (441) can be connected to the central hole; and is connected to the first inner cavity (411) through the connecting pipe (45).
7. The cigarette draw resistance detection device according to claim 6, characterized in that, The testing facility (4) also includes: A detection drive unit (46) is located on the side wall of the switching disk (22) and is connected to the function box (41) for driving the function box (41) to move closer to or away from the placement compartment (221).
8. The cigarette draw resistance detection device according to claim 7, characterized in that, The detection mechanism (4) further includes a guide rod (47) and an elastic element (48). The guide rod (47) and the elastic element (48) are respectively connected to both sides of the piston (42). The guide rod (47) passes through the functional box (41) from the first inner cavity (411), and the elastic element (48) is located in the second inner cavity (412). The vertical plate (11) is provided with a guide block (49), and the side of the guide block (49) near the switching disk (22) is set as a guide surface. The guide rod (47) can abut against the guide surface to push the piston (42) to compress the elastic member (48); the elastic member (48) provides a restoring force to reset the piston (42).
9. The cigarette draw resistance detection device according to claim 1, characterized in that, The positioning mechanism (5) includes: The positioning block (51) is located on the side of the switching disk (22) away from the detection mechanism (4); A positioning drive (52) is disposed on the base plate (12) and drivenly connected to the positioning block (51) for driving the positioning block (51) to move vertically to position the cigarette sample (100).
10. The cigarette draw resistance detection device according to any one of claims 1-9, characterized in that, The cigarette draw resistance detection device also includes a controller (6), which is located on the base plate (12). The switching mechanism (2), the positioning mechanism (5), the multiple limiting mechanisms (3) and the multiple detection mechanisms (4) are all electrically connected to the controller (6).