A filter rod draw resistance detection device

Abstract

This invention relates to the field of filter rod testing equipment, and in particular to a filter rod suction resistance testing device, comprising a support frame, which is the main supporting structure of the device and is generally installed next to the filter rod cutting machine in the processing workshop. The bottom of the support frame can be equipped with a wooden drag structure for shock absorption. A detection component is set on the top of the support frame. The detection component blows air into one end of the filter rod in a sealed environment and sets air pressure sensors or two detection ports of differential pressure transmitters at both ends of the filter rod to calculate the air pressure difference between the two ends when the gas passes through the filter rod, thereby representing the suction resistance of the filter rod. An upper pressure component is set above the detection component. The upper pressure component works with the detection component to provide a sealed environment for the filter rod. The detection component of this device can continuously detect the pressure difference of each filter rod and is adapted to the rhythm and movement of existing production equipment. In addition, the adsorption roller can also clean the dust accumulated in the adsorption holes in a timely manner after rejecting defective products.

Description

Technical Field

[0001] This invention relates to the field of filter rod testing equipment, and in particular to a filter rod suction resistance testing device. Background Technology

[0002] Filter rod draw resistance testing is a crucial step in the filter rod production process, directly impacting the intrinsic quality of cigarettes. The draw resistance and filter rod pressure drop affect the cigarette's flavor, the amount of tar and other smoke released, and the ease of smoking. Currently, most domestic manufacturers still primarily rely on manual, timed, offline sampling for quality control of cigarette filters. This method is not only slow but also limits sampling to quantitative measurements, failing to allow for real-time monitoring alongside production, thus hindering effective product quality control. With the continuous development of cigarette production technology and the continuous improvement of the level of automation and information management in cigarette production, cigarette factories have put forward newer, higher, and stricter requirements for the quality of filter rods and the performance of filter rod quality testing equipment. For example, the published patent CN101943651A, which designs an online filter rod suction resistance measurement device, is a machine that can detect the suction resistance of filter rods online. Although this device can perform real-time online detection on each sampled filter rod, the core design of this device is that the filter rod falls naturally from above to the measurement station, relying on the filter rod's own gravity to complete the feeding. During the falling process, the filter rod will be damaged. Moreover, most equipment uses rollers or conveyor belts to transport the cut filter rods. The transportation is continuous and there is no longitudinal falling process. Therefore, this device has the problem of not being able to match the movement state of the production equipment. In addition, this device is intermittently fed and detected, which cannot match the output rhythm of the production equipment.

[0003] Therefore, this invention proposes a detection device that does not require falling feed, which better protects the filter rod and can continuously monitor and match the continuous conveying rhythm of existing production equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a filter rod suction resistance detection device, which is a dedicated filter rod suction resistance detection device that can match the movement state and discharge rhythm of existing production equipment.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes the following technical solution: a filter rod suction resistance detection device, which includes a support, a detection component disposed on the top of the support, and an upper pressure component disposed above the detection component; The support has a feeding hole at the top. The detection component includes a detection shaft, and a detection roller is provided on the outside of the detection shaft. Inclined cams are provided at both ends of the detection roller. A sensor component is provided above the inclined cams. The sensor component is connected to the support.

[0006] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: the detection roller includes an adsorption roller disposed outside the detection shaft, the side of the adsorption roller is fixedly connected to the detection shaft, the outer wall of the adsorption roller is provided with an adsorption groove, the outer wall of the adsorption groove is provided with an adsorption hole, the interior of the adsorption roller is hollow, a support ring is provided outside the adsorption roller, a support hole is provided on the outer wall of the support ring, and an end face sealing structure is provided inside the support ring.

[0007] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: the inclined cam includes inclined wheel disks disposed at both ends of the adsorption roller, the inclined wheel disks are connected to the sensor component, and the side of the inclined wheel disks is provided with a sliding groove.

[0008] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: the sensor component includes a sensor frame disposed on the side of the inclined cam, the sensor frame being connected to the bracket, a sensor box being disposed on the top of the sensor frame, a pressure sensor being disposed inside the sensor box, and a partition being disposed on the side of the sensor box near the inclined cam.

[0009] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: the end face sealing structure includes an air cylinder disposed inside the support hole, a sealing cover is disposed at one end of the air cylinder near the adsorption roller, the interior of the sealing cover is hollow, the sealing cover is connected to the air cylinder, a limit ring is disposed on the outer wall of the air cylinder, a first elastic element is disposed on the side of the limit ring, and a retaining ring is disposed at one end of the air cylinder near the inclined wheel, the retaining ring being disposed in the sliding groove.

[0010] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: the upper pressure component includes an upper pressure roller disposed above the detection roller, the outer wall of the upper pressure roller is provided with an upper pressure arc groove, both sides of the upper pressure arc groove are provided with receiving grooves, a sealing slider is provided inside the receiving groove, and a second elastic element is provided on the inner side of the sealing slider.

[0011] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: a through hole is provided at the top of the inclined wheel, an air groove is provided on the side of the partition near the through hole, an air filling hole is provided on the side of the air groove, a detection hole is provided on the side of the air filling hole, the detection hole is connected to the sensor box, an air inlet is provided above the air filling hole, and the air inlet is connected to the air filling hole.

[0012] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: an adsorption drum is provided inside the adsorption roller, an air suction groove is provided on the outer wall of the adsorption drum, an air extraction pipe is provided on the outer side of the adsorption drum, a baffle groove is provided on the top of the adsorption drum, a baffle spring is provided inside the baffle groove, and an air blocking plate is provided on the top of the baffle spring.

[0013] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: an air suction pipe is provided on the inner wall of the adsorption roller, the air suction pipe is connected to the air suction groove, a guide rod is provided inside the air suction pipe, and the guide rod is connected to the sealing cover.

[0014] In a preferred embodiment of the filter rod suction resistance detection device of the present invention: guide grooves are provided on both sides of the suction pipe; an inclined slide rod is provided at the end of the guide rod away from the sealing cover; a straight slide rod is provided at the end of the inclined slide rod away from the guide rod; a sliding ring is provided on the outer wall of the guide rod; a filter cylinder is provided at the bottom of the sliding ring; a protective net is provided at the bottom of the filter cylinder; a slot is provided on the side of the filter cylinder near the guide rod; a locking block is provided at the end of the straight slide rod away from the inclined slide rod; and the locking block is located inside the guide groove.

[0015] The beneficial effects of this invention are as follows: the adsorption roller set in this device can continuously detect the pressure difference of each filter rod, and is adapted to the rhythm and movement state of existing production equipment. In addition, after rejecting defective products, the adsorption roller can also clean the dust accumulated in the adsorption holes in a timely manner. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the detection component in this invention.

[0018] Figure 3 This is a schematic diagram of the detection roller in this invention.

[0019] Figure 4 This is a schematic diagram of the inclined wheel in this invention.

[0020] Figure 5 This is a schematic diagram of the sensor component in this invention.

[0021] Figure 6 In this invention Figure 5 Enlarged diagram of point A in the middle.

[0022] Figure 7 In this invention Figure 5 Enlarged diagram of point B in the middle.

[0023] Figure 8 This is a schematic diagram of the sensor box in this invention.

[0024] Figure 9 In this invention Figure 8 Enlarged diagram of point C in the middle.

[0025] Figure 10 This is a schematic diagram of the adsorption drum in this invention.

[0026] Figure 11 In this invention Figure 10 Enlarged diagram of point D in the middle.

[0027] Figure 12 In this invention Figure 10 Enlarged diagram of point E in the middle.

[0028] In the diagram: 1. Support; 2. Detection component; 3. Upper pressure component; 21. Detection shaft; 22. Detection roller; 23. Inclined cam; 24. Sensor component; 221. Adsorption roller; 222. Adsorption groove; 223. Adsorption hole; 224. Support ring; 225. End face sealing structure; 231. Inclined wheel; 232. Slide groove; 241. Sensor frame; 242. Sensor box; 243. Air pressure sensor; 244. Partition; 2241. Support hole; 2251. Air cylinder; 2252. Sealing cover; 2253. Limiting ring; 2254. First elastic element; 2255. Snap ring; 31. Upper pressure roller; 32. 33. Upper pressure arc groove; 34. Receiving groove; 35. Sealing slider; 26. Second elastic element; 233. Through hole; 2441. Air groove; 2442. Detection hole; 2443. Inflation hole; 2444. Air inlet hole; 226. Adsorption air drum; 2261. Suction groove; 2262. Suction pipe; 2263. Suction pipe; 2264. Guide rod; 2265. Slanted rod; 2266. Straight rod; 2267. Locking block; 2268. Guide groove; 2269. Sliding ring; 2270. Filter cartridge; 2271. Protective net; 2272. Locking groove; 2273. Baffle groove; 2274. Baffle spring; 2275. Air baffle plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0031] Example 1, referring to Figures 1-9 This embodiment provides a filter rod suction resistance detection device. This device can be adapted to the roller conveyor production line commonly used in current production, and can achieve online full inspection. It includes a bracket 1, which is the main support structure of this device. It is generally set next to the filter rod cutting machine in the processing workshop. The bottom of the bracket 1 can be equipped with a wooden drag structure for shock absorption. The detection component 2 is set on the top of the bracket 1. The detection component 2 blows air into one end of the filter rod in a sealed environment and sets air pressure sensors 243 or two detection ports of differential pressure transmitters at both ends of the filter rod to calculate the air pressure difference at both ends when the gas passes through the filter rod, so as to represent the suction resistance of the filter rod. The upper pressure component 3 is set above the detection component 2. The upper pressure component 3 works with the detection component 2 to provide a sealed environment for the filter rod. A feeding hole 12 is provided on the top of the bracket 1, such as... Figure 2 As shown, a feeding hole 12 is provided on the lower side of the detection component 2. This feeding hole 12 is used to remove unqualified filter rods from the device when a filter rod with unqualified suction resistance is detected. The detection component 2 includes a detection shaft 21. The detection shaft 21 can be connected to the output shaft of a motor at its end face for rotation, or it can be connected to the power unit of a cutting machine for producing filter rods. A detection roller 22 is provided on the outside of the detection shaft 21. The detection roller 22 rotates with the rotation of the detection shaft 21. Inclined cams 23 are provided at both ends of the detection roller 22. A sensor component 24 is provided above the inclined cam 23. The sensor component 24 is connected to the bracket 1 and fixedly connected to the bracket 1. The inclined cam 23 is fixedly connected to the sensor component 24, so the inclined cam 23 does not rotate. There is relative rotation between the detection roller 22 and the inclined cam 23.

[0032] Furthermore, the detection roller 22 includes an adsorption roller 221 disposed outside the detection shaft 21. The side of the adsorption roller 221 is fixedly connected to the detection shaft 21, and the adsorption roller 221 rotates as the detection shaft 21 rotates. Figure 3As shown, the outer wall of the adsorption roller 221 has an adsorption groove 222. The size of the adsorption groove 222 is set according to the outer diameter of the filter rod to be tested, which can ensure that the filter rod is embedded in the adsorption groove 222. The outer wall of the adsorption groove 222 has adsorption holes 223. The adsorption roller 221 is hollow inside. By creating a negative pressure inside the adsorption holes 223 in the adsorption roller 221, the filter rod is adsorbed into the adsorption groove 222, and the filter rod rotates together with the adsorption roller 221 to achieve the purpose of transferring the filter rod. Moreover, this method of transferring the filter rod is consistent with the transfer method of most filter rod production machines on the market. The filter rod can be directly adsorbed from the drum of the filter rod production machine and then continuously tested. The device 1 is externally provided with a support ring 224, which is fixedly connected to the adsorption roller 221. The outer wall of the support ring 224 is provided with a support hole 2241, and the inner wall of the support ring 224 is provided with an end face sealing structure 225. The end face sealing structure 225 rotates together with the adsorption roller 221. When the filter rod needs to be transferred from the production machine, the end face sealing structure 225 will move away from the two ends of the filter rod and will not interfere with the feeding of the device. As the filter rod rotates with the adsorption roller 221, the end face sealing structure 225 will gradually move closer to the two ends of the filter rod and close to the two ends of the filter rod at the detection station to seal the filter rod and provide a detection environment.

[0033] Furthermore, the inclined cam 23 includes inclined disks 231 disposed at both ends of the adsorption roller 221, the inclined disks 231 being connected to the sensor component 24, such as... Figure 4 As shown, the inclined wheel 231 is fixedly connected to the sensor bracket 1. The inclined wheel 231 is inclined when viewed radially. Figure 4 From this angle, the upper part of the inclined wheel 231 is closer to both ends of the filter rod, while the lower part of the inclined wheel 231 is further away from both ends of the filter rod. The side of the inclined wheel 231 is provided with a groove 232.

[0034] Furthermore, the sensor component 24 includes a sensor holder 241 disposed on the side of the inclined cam 23, the sensor holder 241 being connected to the bracket 1, such as... Figure 5 As shown, the sensor frame 241 is fixedly connected to the bracket 1 and fixed on the top of the adsorption roller 221. The top of the sensor frame 241 is provided with a sensor box 242. The inside of the sensor box 242 is provided with a pressure sensor 243. A sensor is provided at each end of the filter rod on the top of the adsorption roller 221, or at the two measuring ends of a differential pressure transmitter, to measure the pressure difference between the two ends of the gas passing through the filter rod, thus reflecting the adsorption resistance of the filter rod. The sensor is set in the sensor box 242 to obtain a sealed environment and will not be interfered with by the external environment. A partition 244 is provided on the side of the sensor box 242 near the inclined cam 23.

[0035] Furthermore, such as Figure 6As shown, the end-face sealing structure 225 includes an air cylinder 2251 disposed inside the support hole 2241. The air cylinder 2251 is hollow and can be slidable inside the support hole 2241. A sealing cap 2252 is provided at one end of the air cylinder 2251 near the adsorption roller 221. The sealing cap 2252 is hollow and communicates with the air cylinder 2251. A limit ring 2253 is provided on the outer wall of the air cylinder 2251. A first elastic element 2254 is provided on the side of the limit ring 2253. The end of the first elastic element 2254 away from the limit ring 2253 is connected to the support hole 2241. The first elastic element 2254 is in a compressed state, and a retaining ring 2255 is provided at one end of the air cylinder 2251 near the inclined wheel 231. The retaining ring 2255 is located in the slide groove 232 and can rotate along the outer edge of the inclined wheel 231 in the slide groove 232. As the air cylinder 2251 rotates together with the adsorption roller 221, the higher it rotates, the more the air cylinder 2251 will be pressed by the inclined wheel 231 and slide towards the filter rod until it reaches the top detection station of the adsorption roller 221. At this point, the sealing cover 2252 will directly contact the filter rod and completely seal the side of the filter rod.

[0036] Furthermore, the upper pressure component 3 includes an upper pressure roller 31 disposed above the detection roller 22. The upper pressure roller 31 can be connected to the detection shaft 21 via a chain to obtain power, or it can be connected to an external motor or directly to the power system on the production machine. The outer wall of the upper pressure roller 31 is provided with an upper pressure arc groove 32, such as... Figure 7 As shown, both sides of the upper pressure arc groove 32 are provided with receiving grooves 33. A sealing slider 34 is provided inside the receiving groove 33. The sealing slider 34 can slide radially along the detection roller 22 in the receiving groove 33. A second elastic element 35 is provided on the inner side of the sealing slider 34. The end of the second elastic element 35 away from the sealing slider 34 is connected to the inner wall of the receiving groove 33. The upper pressure roller 31 rotates together with the adsorption roller 221. Every time the top of the adsorption roller 221 passes a filter rod, the bottom of the upper pressure roller 31 will pass through an upper pressure arc groove 32. When the filter rod is on the top of the adsorption roller 221, the top of the filter rod will be covered by the upper pressure arc groove 32, and the sealing slider 34 will be pressed from both sides of the filter rod, thereby completely sealing the filter rod to ensure the sealing performance when detecting differential pressure. This device uses a roller structure for feeding and detection, which can not only match the rhythm and movement of existing production machines, but also continuously perform online detection.

[0037] Usage: Fix the device bracket 1 next to the filter rod cutting machine in the processing workshop. Connect the detection shaft 21 to the power unit or independent motor output shaft of the filter rod cutting machine. The upper pressure roller 31 is connected to the detection shaft 21 through a chain to ensure smooth power transmission of each rotating part. After the filter rod of the production machine is cut, its rotating drum is connected to the adsorption roller 221 of this device. The adsorption roller 221 rotates synchronously under the drive of the detection shaft 21. The adsorption groove 222 on the outer wall of the adsorption roller 221 is precisely aligned with the filter rod on the rotating drum of the production machine. A negative pressure is generated inside the adsorption roller 221. The filter rod is firmly adsorbed in the adsorption groove 222 through the adsorption hole 223 on the outer wall of the adsorption groove 222, realizing the transfer of the filter rod from the production machine to this device. The transfer method is consistent with the existing production machine to avoid damage to the filter rod.

[0038] The filter rod rotates together with the adsorption roller 221. At this time, the retaining ring 2255 in the end face sealing structure 225 slides along the groove 232 of the inclined wheel 231. Because the lower part of the inclined wheel 231 is far away from the two ends of the filter rod, under the action of the first elastic element 2254, the air cylinder 2251 drives the sealing cover 2252 to a position away from the filter rod, so as not to interfere with the transport of the filter rod. When the filter rod rotates with the adsorption roller 221 to the detection position at the top of the device, the retaining ring 2255 of the end face sealing structure 225 slides upward along the groove 232 of the inclined wheel 231. Because the upper part of the inclined wheel 231 is close to the two ends of the filter rod, the inclined wheel 231 pushes the air cylinder 2251 to slide closer to the filter rod through the retaining ring 2255. The first elastic element 2254 is further compressed, and the air cylinder 2251 drives the sealing cover 2252 to move away from the filter rod. 2. The upper pressure roller 31 is in close contact with both ends of the filter rod to achieve a seal at both ends of the filter rod. At the same time, the upper pressure arc groove 32 of the upper pressure roller 31 completely covers the top of the filter rod. Under the elastic force of the second elastic element 35, the sealing slider 34 in the receiving groove 33 is pressed from both sides of the filter rod, and cooperates with the end face sealing structure 225 to form a full circumferential sealing environment to ensure that there is no air leakage during the detection process. At this time, the detection air circuit is activated, and air is blown to one end of the filter rod. The gas passes through the inside of the filter rod and flows out from the other end. The two air pressure sensors 243 in the sensor box 242 respectively collect the air pressure values ​​at both ends of the filter rod and transmit the detection signal to the control system. The control system calculates the pressure difference at both ends of the filter rod based on the collected air pressure data, and calculates the suction resistance value of the filter rod in combination with the preset parameters. It compares the value with the standard suction resistance range to determine whether the filter rod is qualified.

[0039] Example 2, refer to Figures 1-9 This is the second embodiment of the present invention. Unlike the previous embodiment, the top of the inclined wheel 231 has a through hole 233, such as... Figure 9As shown, the top of the inclined wheel 231 is the detection station. The partition 244 and the sensor are also located on the top side of the inclined wheel 231. An air groove 2441 is provided on the side of the partition 244 near the through hole 233. The air groove 2441 is a sealed structure, and its side is connected to the through hole 233. An inflation hole 2443 is provided on the side of the air groove 2441, and a detection hole 2442 is provided on the side of the inflation hole 2443. The detection hole 2442 is connected to the sensor box 242. An air inlet 2444 is provided above the inflation hole 2443, and it is connected to the inflation hole 2443. Sensor components 24 are provided at both ends of the inclined wheel 231. The sensor components 24 at both ends have the same structure, but during detection, one end of the filter rod is the air inlet and the other end is the air outlet. Figure 9 The structure shown is that of the sensor component 24 at the air inlet end. The sensor structure at the air outlet end does not have an air inlet 2444. The gas is directly guided to the sensor for air pressure measurement and then discharged.

[0040] Usage: When the filter rod rotates with the adsorption roller 221 to the detection station, the sealing cover 2252 fits tightly against both ends of the filter rod, and the sealing slider 34 of the upper pressure roller 31 presses it from both sides, forming a fully circumferential sealed environment. Both ends of the filter rod are aligned with the through holes 233 on the top of the inclined wheel 231. An external air source injects gas through the air inlet 2444, and the gas enters the air groove 2441 through the inflation hole 2443. Then, it is precisely guided to one end of the filter rod through the through hole 233 of the inclined wheel 231, ensuring that the gas only penetrates from the inside of the filter rod without side leakage. Before the gas enters the filter rod, part of the gas flow passes through the detection port on the side of the air groove 2441. The air pressure value at the inlet end is collected in real time by the sensor in the inlet end sensor box 242 through the hole 2442. After passing through the filter rod, the gas is discharged from the other end of the filter rod and directly enters the through hole 233 of the inclined wheel 231 at the outlet end. Then it is guided to the sensor in the outlet end sensor box 242 to collect the outlet end air pressure value. The control system calculates the pressure difference through the air pressure data of the sensors at both ends, and calculates the filter rod suction resistance value in combination with preset parameters to determine whether the product is qualified. After the test is completed, the air source at the inlet end is closed, and the residual gas in the air groove 2441 is discharged from the outlet end with the filter rod, reserving a clean air path environment for the next filter rod test.

[0041] Example 3, referring to Figures 1-12 This is the third embodiment of the present invention. Unlike the previous embodiment, the adsorption roller 221 has an adsorption drum 226 inside. The outer wall of the adsorption drum 226 has an air suction groove 2261, and an air extraction pipe 2262 is provided on the outer side of the adsorption drum 226. A baffle groove 2273 is provided at the top of the adsorption drum 226. A baffle spring 2274 is provided inside the baffle groove 2273, and an air-blocking plate 2275 is provided at the top of the baffle spring 2274. Figure 10As shown, the suction pipe 2262 is located on the side of the adsorption drum 226. This end of the adsorption drum 226 can be fixedly connected to the bracket 1. The adsorption drum 226 and the adsorption roller 221 will rotate relative to each other. One end of the adsorption roller 221 is fixedly connected to the detection shaft 21 through a flange. In this way, the adsorption roller 221 will rotate. During the rotation of the adsorption roller 221, in the area where air needs to be drawn, the suction pipe 2262 can stably draw air to form a negative pressure in the adsorption drum 226.

[0042] Furthermore, an air suction pipe 2263 is provided on the inner wall of the adsorption roller 221. The adsorption roller 221 is rotatably connected to the adsorption drum 226. The air suction pipe 2263 is connected to the air suction groove 2261. An air suction device, such as an air pump, can be installed on the side of the suction pipe 2262. A negative pressure is formed inside the adsorption drum 226, thus creating a negative pressure inside the air suction pipe 2263 as well. Of course, the negative pressure is not formed on the entire outer ring of the adsorption drum 226; it is only formed on the outside of the adsorption drum 226. Only area 261 transmits negative pressure to the suction pipe 2263. The end of the suction pipe 2263 furthest from the center of the adsorption roller 221 is the adsorption hole 223. The adsorption hole 223 can then use negative pressure to adsorb and transport the filter rod. However, when pressure differential detection is needed at the top of the adsorption roller 221, the cigarette paper wrapping some filter rods has high air permeability. This can damage the seal of the adsorption hole 223, leading to inaccurate pressure differential measurements. Therefore, the adsorption hole needs to be cut off at the detection station. Figure 10 As shown, a baffle groove 2273 is provided here. When the adsorption roller 221 carries the filter rod to this location, the air baffle 2275 inside the baffle groove 2273 is lifted and pressed against the bottom of the air intake pipe 2263 by the baffle spring 2274, thereby isolating the air from being drawn in. This ensures that the filter rod is in an absolutely sealed environment, guaranteeing accurate detection. At the discharge hole 12, it is also necessary to isolate the air from being drawn in, so that the adsorption roller 221 can no longer adsorb the filter rod. Filter rods that fail the test can be removed from the device. Therefore, a matching air baffle 2275 structure is also provided at the discharge point.

[0043] Furthermore, a guide rod 2264 is provided inside the air intake pipe 2263. The guide rod 2264 is connected to the sealing cover 2252. As the sealing cover 2252 slides in the support ring 224 with the air cylinder 2251, the guide rod 2264 will slide radially along the air intake pipe 2263 inside the air intake pipe 2263.

[0044] Furthermore, guide grooves 2268 are provided on both sides of the intake pipe 2263, and an inclined slide rod 2265 is provided at the end of the guide rod 2264 away from the sealing cover 2252, and a straight slide rod 2266 is provided at the end of the inclined slide rod 2265 away from the guide rod 2264. The guide rod 2264 is fixedly connected to the inclined slide rod 2265, and the straight slide rod 2266 is fixedly connected to the inclined slide rod 2265. Figure 11 As shown, a sliding ring 2269 is provided on the outer wall of the guide rod 2264. The sliding ring 2269 is fitted onto the outer wall of the guide rod 2264 and can slide along the outer wall of the guide rod 2264. A filter cylinder 2270 is provided at the bottom of the sliding ring 2269 and is fixedly connected to the sliding ring 2269. A protective net 2271 is provided at the bottom of the filter cylinder 2270. When the filter rod is adsorbed, dust and other impurities in the air are absorbed into the adsorption holes 223. The protective net 2271 can filter dust and prevent dust from entering the suction pipe 2263. A slot 2272 is provided on the side of the filter cylinder 2270 near the guide rod 2264. The dimensions are set with reference to the outer diameter of the guide rod 2264 to prevent motion interference between the filter cylinder 2270 and the guide rod 2264. A locking block 2267 is provided at the end of the straight rod 2266 away from the inclined rod 2265. The locking block 2267 is located inside the guide groove 2268. After the filter rod rotates to the top of the adsorption roller 221 and completes the differential pressure detection, the adsorption roller 221 continues to rotate with the filter rod, causing the filter rod to move downwards. Under the action of the inclined wheel 231, the sealing cover 2252 gradually moves away from the filter rod, causing the guide rod 2264 to slide towards the support ring 224. Relative sliding will occur between the sliding ring 2269 and the guide rod 2264. Figure 2 As shown, when the filter rod rotates to the right side of the adsorption roller 221, the filter rod can be removed by the transfer roller. However, if a defective filter rod with abnormal pressure difference is detected, the transfer roller will not remove it and will continue to rotate with the adsorption roller 221 until the lower part of the filter rod is close to the top of the discharge hole 12. A sliding plate is set above the discharge hole 12. The negative pressure in the adsorption hole 223 is blocked by the air baffle plate 2275. The defective filter rod will fall out of the device from the discharge hole along the sliding plate, completing the separation of the defective filter rod. At this time, there are no filter rods on the adsorption tank 222, and the dust at the adsorption hole 223 can be cleaned to ensure the adsorption effect of the adsorption hole 223.

[0045] As the adsorption roller 221 continues to rotate, the guide rod 2264 continues to slide relative to the sliding ring 2269 towards the support ring 224. The sliding ring 2269 will slide onto the inclined rod 2265. At this time, the sliding ring 2269 will drive the filter cartridge 2270 to slide away from the axis of the adsorption roller 221. When it rotates to the bottom of the adsorption roller 221, the filter cartridge 2270 will slide out of the bottom of the suction pipe 2263. Figure 11As shown, the dust accumulated in the adsorption hole 223 is pushed out, and the negative pressure at this point is also blocked by the air baffle plate 2275. The dust is discharged from the suction pipe 2263 by the thrust of the filter cartridge 2270 and the centrifugal effect of the adsorption roller 221. After the dust removal is completed, the adsorption roller 221 continues to rotate. At this time, the sealing cover 2252 moves upward. Under the action of the inclined wheel 231, the sealing end cover will slide away from the support ring 224. As a result, the sliding ring 2269 will gradually return to the guide rod 2264 via the inclined sliding rod 2265, and the filter cartridge 2270 will also return. Within the suction pipe, and without interfering with the contact between the adsorption hole 223 and the filter rod, the filter cartridge 2270 must return to the adsorption hole 223. The bottom of the filter cartridge 2270 cannot directly contact the filter rod, as dust easily accumulates in the gap between the bottom of the filter cartridge 2270 and the filter rod. At this point, the filter cartridge 2270 returns to the adsorption hole 223, and the adsorption tank 222 also rotates to the position where the filter rod needs to be transferred. A negative pressure is formed again here, carrying the filter rod to the top of the adsorption roller 221 for differential pressure detection. At this time, the approximate positional relationship between the filter cartridge 2270 and the suction pipe 2263 is as follows: Figure 12 As shown, after the test is completed, the adsorption roller 221 will continue to rotate. When the filter cylinder 2270 rotates to the bottom of the adsorption roller 221, it will extend the adsorption hole 223 to clean the accumulated dust. This continuous dust cleaning can prevent dust accumulation and ensure the adsorption effect of the adsorption hole 223.

[0046] Usage Process: After passing the inspection, the filter rod continues to rotate with the adsorption roller 221, leaving the inspection station. When the filter rod rotates to the right side of the adsorption roller 221, the transfer roller promptly removes the filter rod and sends it to the subsequent production process. Filter rods that fail the inspection continue to rotate with the adsorption roller 221 until they rotate above the discharge hole 12. Under the action of gravity, the unqualified filter rods are discharged from the discharge hole 12 along the slide plate, completing the rejection. After the filter rod leaves the adsorption tank 222, the adsorption roller 221 continues to rotate. The guide rod 2264 moves further towards the support ring 224 as the sealing cover 2252 slides. The sliding ring 2269 slides relative to the guide rod 2264, gradually sliding onto the inclined slide rod 2265, and driving the filter cylinder 2270 away from the adsorption roller 222. 1. Sliding along the axis; when the adsorption roller 221 rotates to the bottom, the filter cartridge 2270 slides completely out of the bottom of the suction pipe 2263, pushing out the dust accumulated in the adsorption hole 223, completing the dust removal; after the dust removal is completed, the adsorption roller 221 continues to rotate, the sealing cover 2252 moves upward under the action of the inclined wheel 231, the guide rod 2264 slides away from the support ring 224, the sliding ring 2269 gradually returns to the guide rod 2264 via the inclined sliding rod 2265, and the filter cartridge 2270 synchronously returns to the suction pipe 2263, restoring to the adsorption ready state. This device uses the adsorption roller 221 to detect the pressure difference of the filter rod during the rotation process, which can be adapted to most existing production lines, and the detection speed can reach 1000 pieces / minute.

[0047] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A filter rod suction resistance detection device, characterized in that: include, The bracket (1), the detection component (2) disposed on the top of the bracket (1), and the pressure component (3) disposed above the detection component (2); The support (1) has a feeding hole (12) on its upper part. The detection component (2) includes a detection shaft (21). A detection roller (22) is provided on the outside of the detection shaft (21). Inclined cams (23) are provided at both ends of the detection roller (22). A sensor component (24) is provided on the upper part of the inclined cam (23). The sensor component (24) is connected to the support (1).

2. The filter rod suction resistance detection device as described in claim 1, characterized in that: The detection roller (22) includes an adsorption roller (221) disposed outside the detection shaft (21). The side of the adsorption roller (221) is fixedly connected to the detection shaft (21). An adsorption groove (222) is provided on the outer wall of the adsorption roller (221). An adsorption hole (223) is provided on the outer wall of the adsorption groove (222). The adsorption roller (221) is hollow inside. A support ring (224) is provided on the outside of the adsorption roller (221). A support hole (2241) is provided on the outer wall of the support ring (224). An end face sealing structure (225) is provided inside the support ring (224).

3. The filter rod suction resistance detection device as described in claim 2, characterized in that: The inclined cam (23) includes inclined wheel disks (231) disposed at both ends of the adsorption roller (221), the inclined wheel disks (231) are connected to the sensor component (24), and the inclined wheel disks (231) have grooves (232) on their sides.

4. The filter rod suction resistance detection device as described in claim 3, characterized in that: The sensor component (24) includes a sensor frame (241) disposed on the side of the inclined cam (23). The sensor frame (241) is connected to the bracket (1). A sensor box (242) is disposed on the top of the sensor frame (241). A pressure sensor (243) is disposed inside the sensor box (242). A partition (244) is disposed on the side of the sensor box (242) near the inclined cam (23).

5. The filter rod suction resistance detection device as described in claim 4, characterized in that: The end face sealing structure (225) includes an air cylinder (2251) disposed inside the support hole (2241). A sealing cover (2252) is provided at one end of the air cylinder (2251) near the adsorption roller (221). The sealing cover (2252) is hollow inside and is connected to the air cylinder (2251). A limit ring (2253) is provided on the outer wall of the air cylinder (2251). A first elastic element (2254) is provided on the side of the limit ring (2253). A retaining ring (2255) is provided at one end of the air cylinder (2251) near the inclined wheel (231). The retaining ring (2255) is disposed in the slide groove (232).

6. The filter rod suction resistance detection device as described in claim 5, characterized in that: The upper pressure component (3) includes an upper pressure roller (31) disposed above the detection roller (22). The outer wall of the upper pressure roller (31) is provided with an upper pressure arc groove (32). Both sides of the upper pressure arc groove (32) are provided with receiving grooves (33). A sealing slider (34) is provided inside the receiving groove (33). A second elastic element (35) is provided on the inner side of the sealing slider (34).

7. The filter rod suction resistance detection device as described in claim 6, characterized in that: The inclined wheel (231) has a through hole (233) at the top. The partition (244) has an air groove (2441) on the side near the through hole (233). The air groove (2441) has an inflation hole (2443) on the side. The inflation hole (2443) has a detection hole (2442) on the side. The detection hole (2442) is connected to the sensor box (242). An air inlet (2444) is provided above the inflation hole (2443). The air inlet (2444) is connected to the inflation hole (2443).

8. The filter rod suction resistance detection device as described in claim 7, characterized in that: The adsorption roller (221) is provided with an adsorption drum (226) inside. The outer wall of the adsorption drum (226) is provided with an air suction groove (2261). The outer side of the adsorption drum (226) is provided with an air extraction pipe (2262). The top of the adsorption drum (226) is provided with a baffle groove (2273). The inside of the baffle groove (2273) is provided with a baffle spring (2274). The top of the baffle spring (2274) is provided with an air blocking plate (2275).

9. The filter rod suction resistance detection device as described in claim 8, characterized in that: The inner wall of the adsorption roller (221) is provided with an air suction pipe (2263), which is connected to the air suction groove (2261). A guide rod (2264) is provided inside the air suction pipe (2263), which is connected to the sealing cover (2252).

10. The filter rod suction resistance detection device as described in claim 9, characterized in that: The air intake pipe (2263) has guide grooves (2268) on both sides. The guide rod (2264) is provided with a slanted slide rod (2265) at one end away from the sealing cover (2252). The slanted slide rod (2265) is provided with a straight slide rod (2266) at one end away from the guide rod (2264). The outer wall of the guide rod (2264) is provided with a sliding ring (2269). The bottom of the sliding ring (2269) is provided with a filter cylinder (2270). The bottom of the filter cylinder (2270) is provided with a protective net (2271). The filter cylinder (2270) is provided with a slot (2272) on one side near the guide rod (2264). The straight slide rod (2266) is provided with a locking block (2267) at one end away from the slanted slide rod (2265). The locking block (2267) is located inside the guide groove (2268).

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