A terahertz-based filter rod burst balloon detection device

Abstract

This invention discloses a terahertz-based filter rod bursting bead detection device, belonging to the field of terahertz non-destructive testing technology. It includes: a frame assembly; a rod feeding assembly; a detection assembly; a rotating rod assembly; a rod rejection assembly; a rod ejection assembly; a driving assembly; a negative pressure adsorption assembly; and a rod dropping assembly. This invention is based on a terahertz transmitter emitting terahertz waves, and a terahertz receiver receiving the modulated signal after penetrating the filter rod, which is then transmitted to a processor. The processor analyzes the received modulated signal to determine its compliance. Compared to existing technologies, the coaxial transmission-type terahertz detection of the terahertz transmitter and receiver enables accurate identification of the entire state of the filter rod bursting beads.

Description

Technical Field

[0001] This invention belongs to the field of terahertz nondestructive testing technology, specifically relating to a terahertz-based filter rod bursting bead detection device. Background Technology

[0002] A popping bead filter stick is a functional filter stick with a brittle popping bead embedded inside, containing liquid flavoring / cooling agent. Consumers can squeeze it to release the aroma and customize the flavor.

[0003] The burst beads in the filter rod are prone to defects such as missing beads, extra beads, misalignment, micro-cracks in the wall material, leakage, and shriveling due to mechanical extrusion, friction, and process fluctuations. These defects affect brand reputation and product qualification rate, so burst bead testing is particularly important.

[0004] Current filter rod burst bead detection devices generally rely on visual inspection, which can only identify the surface and cannot accurately identify the full state of the burst beads. In addition, since they only have detection components, they still need to rely on other matching equipment for loading and unloading, and the detection efficiency needs to be improved.

[0005] In view of this, a terahertz-based filter rod bursting bead detection device is designed to solve the above problems. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a terahertz-based filter rod bursting bead detection device, which features accurate identification of the entire bursting bead state of the filter rod and full-process automation to improve the detection efficiency of bursting bead filter rods.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a terahertz-based filter rod bursting bead detection device, comprising: Rack components; The filter rod feeding assembly, assembled on the frame assembly, clamps the filter rod to be tested and transports it to the testing position; A detection component, assembled on the frame assembly, detects the filter rods to be tested conveyed by the rod feeding assembly; The rotating rod assembly is mounted on the frame assembly and receives the filter rods after testing from the rod feeding assembly. A filter rod rejection assembly is assembled on the rotating rod assembly to reject filter rods that fail the test on the rotating rod assembly; The filter rod output assembly is mounted on the frame assembly and receives the qualified filter rods from the rotating rod assembly; A drive assembly, mounted on the frame assembly, drives the bar feeding assembly, the bar rotating assembly, and the bar output assembly to rotate and feed, rotate, and output the bars. The negative pressure adsorption component is assembled on the frame assembly, the rotating rod assembly, the rejecting rod assembly and the output rod assembly, so that the rotating rod assembly uses negative pressure adsorption to clamp the tested filter rod, the rejecting rod assembly removes the unqualified filter rods on the rotating rod assembly, and the output rod assembly uses negative pressure adsorption to clamp the qualified filter rods. The filter rod dropping assembly, mounted on the frame assembly, receives the qualified filter rods from the filter rod dispensing assembly and drops them for collection.

[0008] Furthermore, the frame assembly includes a drive housing, a negative pressure adsorption housing is fixedly attached to the drive housing near the detection end sidewall, and a drive cover plate is fixedly attached to the drive housing away from the detection end sidewall.

[0009] Furthermore, the rod feeding assembly includes a drive shaft rotatably connected inside the drive housing and the negative pressure adsorption housing. The drive end of the drive shaft extends through the drive cover plate to the outside. The mounting end of the drive shaft extends to the outside of the negative pressure adsorption housing and is fixedly sleeved with a detection hub. The outer wall of the detection hub is provided with several detection slots at equal intervals along the circumference.

[0010] Furthermore, the detection component includes a mounting bracket fixed to the side wall of the drive housing away from the drive cover plate, with one end open. The mounting bracket is located below the detection hub. The top of the mounting bracket is fixed to the detection housing away from the drive housing. The mounting bracket and the detection housing cooperate to wrap around the detection hub. A terahertz transmitter is fixed to the upper section of the detection housing and a terahertz receiver is fixed to the lower section of the detection housing. The terahertz transmitter and the terahertz receiver are correspondingly arranged. A processor is fixed inside the detection housing, and a detection cover plate is fixed to the open end wall of the detection housing.

[0011] Furthermore, the rotating rod assembly includes an intermediate follower shaft rotatably connected inside the drive housing and the negative pressure adsorption housing. The drive end of the intermediate follower shaft is rotatably connected to the drive cover plate. The mounting end of the intermediate follower shaft extends to the outside of the negative pressure adsorption housing and is fixedly sleeved with a rejection wheel hub. The outer wall of the rejection wheel hub is provided with a plurality of rejection slots at equal intervals along the circumference.

[0012] Furthermore, the bar assembly includes two air inlet pipes symmetrically arranged along the central axis of the detection housing below the detection housing.

[0013] Furthermore, the rod output assembly includes a side follower shaft rotatably connected inside the drive housing and the negative pressure adsorption housing. The drive end of the side follower shaft is rotatably connected to the drive cover plate. The mounting end of the side follower shaft extends to the outside of the negative pressure adsorption housing and is fixedly sleeved with an output hub. The outer wall of the output hub is provided with several output slots at equal intervals along the circumference.

[0014] Furthermore, the drive assembly includes three gears that are respectively fixedly sleeved on the drive shaft, the intermediate follower shaft and the side follower shaft located inside the drive housing, with adjacent gears meshing with each other.

[0015] Furthermore, the negative pressure adsorption assembly includes an air intake pipe fixed to the side wall of the drive cover away from the drive housing, two air distribution seats fixed to the side wall of the negative pressure adsorption housing away from the drive housing located inside the removal hub and the output hub, and several ventilation holes equally spaced inside the removal slot and the output slot. The air intake pipe is connected to the negative pressure adsorption housing, and the two air distribution seats are connected to the negative pressure adsorption housing and respectively contact the inner side wall of the removal hub and the output hub. The air distribution seat inside the removal hub is provided with a negative pressure zone, a transition zone and a release zone, and the air distribution seat inside the output hub is provided with a negative pressure zone and a transition zone. The negative pressure zone has a connecting port connecting the inside and outside of the air distribution seat, the transition zone is a closed surface that does not connect the inside and outside, and the release zone has a connecting port connecting the air intake pipe to the outside.

[0016] Furthermore, the drop bar assembly includes a guide arm and a mounting plate fixedly attached to the side wall of the negative pressure adsorption housing away from the drive housing. The guide arm is located on the side of the output hub away from the rejection hub. A guide rod is fixedly attached to the guide arm away from the side wall of the negative pressure adsorption housing. A guide plate is fixedly sleeved on the guide rod. The mounting plate is located below the guide arm. An mounting arm is fixedly attached to the mounting plate away from the side wall of the negative pressure adsorption housing. A drop bar plate is fixedly attached to the mounting arm away from the end wall of the mounting plate. The distance between the drop bar plate and the output hub is insufficient to allow the filter rod to pass through.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention is based on a terahertz transmitter emitting terahertz waves and a terahertz receiver receiving the modulated signal after it penetrates the filter rod and transmitting it to a processor. The processor analyzes the received modulated signal to make a qualification judgment. Compared with the prior art, the coaxial transmission terahertz detection of the terahertz transmitter and the terahertz receiver can achieve accurate identification of the entire state of the filter rod burst beads.

[0018] 2. Based on the coordinated operation of the rod feeding component, rod rotating component, rod rejecting component, rod discharging component, driving component, negative pressure adsorption component and rod dropping component, this invention can realize the full-process automation of feeding, rejecting unqualified materials, conveying qualified materials and dropping qualified materials of the bursting bead filter rod, thereby improving the detection efficiency of the bursting bead filter rod. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the invention from a low angle; Figure 3 This is a rear-view perspective perspective view of the present invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a vertical sectional view of the present invention; Figure 6 This is a vertical sectional view of another location of the present invention; In the diagram: 101, drive housing; 102, negative pressure adsorption housing; 103, drive cover plate; 201. Drive shaft; 202. Inspect wheel hub; 203. Inspect card slot; 301. Mounting bracket; 302. Detection housing; 303. Terahertz transmitter; 304. Terahertz receiver; 305. Processor; 306. Detection cover plate; 401. Intermediate follower shaft; 402. Remove wheel hub; 403. Remove card slot; 501. Air inlet duct; 601. Side follower shaft; 602. Output hub; 603. Output slot; 701. Gear; 801. Suction duct; 802. Air distribution base; 803. Ventilation hole; 901. Guide arm; 902. Guide rod; 903. Guide plate; 904. Mounting plate; 905. Mounting arm; 906. Drop plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides the following technical solution: a terahertz-based filter rod burst bead detection device, comprising: Rack components; The filter rod feeding assembly, assembled on the frame assembly, clamps the filter rod to be tested and transports it to the testing position; The detection component is assembled on the frame assembly and detects the filter rods to be tested conveyed by the rod feeding assembly. The rotating rod assembly is mounted on the frame assembly and receives the filter rods after testing on the rod feeding assembly; The filter rod rejection assembly is assembled on the rotating rod assembly and rejects filter rods that fail the test on the rotating rod assembly. The filter rod output assembly is assembled on the frame assembly and receives the filter rods that have passed the inspection on the rotating rod assembly. The drive assembly, mounted on the frame assembly, drives the bar feeding assembly, bar rotating assembly, and bar output assembly to rotate and feed, rotate, and output the bars. The negative pressure adsorption component is assembled on the frame assembly, rotating rod assembly, rejecting rod assembly and discharging rod assembly. The rotating rod assembly uses negative pressure adsorption to clamp the tested filter rod, the rejecting rod assembly removes the unqualified filter rod from the rotating rod assembly, and the discharging rod assembly uses negative pressure adsorption to clamp the qualified filter rod. The filter rod dropping assembly, mounted on the frame assembly, receives the qualified filter rods from the filter rod output assembly and drops them for collection.

[0022] See appendix Figure 1-6 When the device performs filter rod bursting bead detection, the drive component drives the rod feeding component, the rotating rod component, and the rod discharging component to rotate. The rod feeding component clamps the filter rod to be tested and sends it to the detection position. The detection component detects the filter rod on the rod feeding component and records the detection result. The rod feeding component continues to rotate until it reaches the negative pressure zone of the rotating rod component. The negative pressure of the rotating rod component adsorbs and clamps the filter rod detected on the rod feeding component and continues to rotate. When it rotates to the release zone, if the filter rod is qualified, the rod rejection component does not move. Otherwise, the rod rejection component moves to remove the unqualified filter rod. The rotating rod component continues to rotate to the transition zone, which is the negative pressure zone of the rod discharging component. The negative pressure of the rod discharging component adsorbs and clamps the qualified filter rod on the rotating rod component and continues to rotate. When it rotates to the release zone, the filter rod falls onto the rod dropping component and is collected by the rod dropping component.

[0023] Specifically, the frame assembly includes a drive housing 101, a negative pressure adsorption housing 102 fixed to the side wall of the drive housing 101 near the detection end by screws, and a drive cover plate 103 fixed to the side wall of the drive housing 101 away from the detection end by screws.

[0024] See appendix Figure 1 The frame, consisting of the drive housing 101 and the negative pressure adsorption housing 102, can perform the driving and negative pressure adsorption functions of the device. The drive cover 103 prevents dust from entering the drive housing 101.

[0025] Specifically, the rod feeding assembly includes a drive shaft 201 rotatably connected inside the drive housing 101 and the negative pressure adsorption housing 102 via a bearing seat. The drive end of the drive shaft 201 extends through the drive cover plate 103 to the outside. The mounting end of the drive shaft 201 extends to the outside of the negative pressure adsorption housing 102 and is fixedly sleeved with a detection hub 202. The outer wall of the detection hub 202 is provided with a plurality of detection slots 203 at equal intervals along the circumference.

[0026] See appendix Figure 4 The filter rod feeding assembly consists of several detection slots 203 that hold the filter rods to be tested. The rotating drive shaft 201 drives the detection hub 202 to rotate, thus completing the rotational transport of the filter rods to be tested.

[0027] Specifically, the detection component includes a mounting bracket 301 with an opening at one end, which is fixed to the side wall of the drive housing 101 away from the drive cover plate 103 by screws. The mounting bracket 301 is located below the detection hub 202. The detection housing 302 is fixed to the top of the mounting bracket 301 away from the drive housing 101. The mounting bracket 301 and the detection housing 302 cooperate to wrap the detection hub 202. A terahertz transmitter 303 is fixed to the upper section of the detection housing 302, and a terahertz receiver 304 is fixed to the lower section of the detection housing 302. The terahertz transmitter 303 and the terahertz receiver 304 are correspondingly arranged. A processor 305 is fixed inside the detection housing 302, and a detection cover plate 306 is fixed to the open end wall of the detection housing 302 by screws.

[0028] See appendix Figure 1 and 5 The detection component emits terahertz waves through the terahertz receiver 304, receives the modulated signal after penetrating the filter rod, and transmits it to the processor 305. The processor 305 analyzes the received modulated signal and determines the presence or absence of filter rod burst beads, positional deviation, and leakage based on the analysis results, generating a qualified or unqualified result. The terahertz receiver 304 includes a terahertz transmitter and a focusing lens. The terahertz transmitter is a fundamental signal source plus a frequency multiplier. The focusing lens collimates and focuses the diverging beam emitted from the terahertz transmitter, compresses the beam cross-section, and makes the terahertz wave a parallel focused beam with a diameter of 4mm perpendicularly incident on the filter rod detection area, ensuring that the detection energy is concentrated and avoiding signal attenuation and resolution reduction caused by beam divergence. The terahertz receiver 304 includes a focusing lens and a terahertz receiving source. The focusing lens and the focusing lens of the terahertz receiver 304 form a symmetrical optical link, which refocuses the terahertz modulation signal that has diverged after passing through the filter rod and converges it to the photosensitive surface of the terahertz receiving source. This maximizes the collection of detection signal energy, improves the response sensitivity of the detector, and reduces energy loss during signal transmission. The terahertz receiving source is a Schottky diode, which forms a transmit-receive linkage with the terahertz emitting source. It converts the focused terahertz optical signal into an electrical signal, which is then pre-amplified and transmitted to the processor 305 to complete the capture of the original detection signal.

[0029] Specifically, the rotating rod assembly includes an intermediate follower shaft 401 that is rotatably connected to the drive housing 101 and the negative pressure adsorption housing 102 via bearings. The drive end of the intermediate follower shaft 401 is rotatably connected to the drive cover plate 103 via bearings. The mounting end of the intermediate follower shaft 401 extends to the outside of the negative pressure adsorption housing 102 and is fixedly sleeved with a rejection hub 402. The outer wall of the rejection hub 402 is provided with a plurality of rejection slots 403 at equal intervals along the circumference.

[0030] See appendix Figure 1The rotating rod assembly consists of several rejection slots 403 for holding the tested filter rods. The rotating intermediate follower shaft 401 drives the rejection hub 402 to rotate, thus completing the rotational transport of the tested filter rods.

[0031] Specifically, the bar assembly includes two air inlet pipes 501 located below the detection housing 302 and symmetrically arranged along the central axis of the detection housing 302.

[0032] See appendix Figure 2 The filter rod removal assembly uses two air inlet pipes 501 to introduce compressed air to blow off filter rods that fail the inspection.

[0033] Specifically, the rod output assembly includes a side follower shaft 601 that is rotatably connected to the drive housing 101 and the negative pressure adsorption housing 102 via bearings. The drive end of the side follower shaft 601 is rotatably connected to the drive cover plate 103 via bearings. The mounting end of the side follower shaft 601 extends to the outside of the negative pressure adsorption housing 102 and is fixedly sleeved with an output hub 602. The outer wall of the output hub 602 has several output slots 603 evenly spaced along the circumference.

[0034] See appendix Figure 1 The filter rod output assembly consists of several output slots 603 that hold the qualified filter rods. The output hub 602 is driven to rotate by the rotating side follower shaft 601 to complete the rotational transport of the qualified filter rods.

[0035] Specifically, the drive assembly includes three gears 701 that are respectively fixedly sleeved on the drive shaft 201, the intermediate follower shaft 401 and the side follower shaft 601 located inside the drive housing 101, and adjacent gears 701 are meshed together.

[0036] See appendix Figure 6 The drive motor drives the drive shaft 201 to rotate, the drive shaft 201 drives the connected gear 701 to rotate, the connected gear 701 drives the meshing intermediate gear 701 to rotate, the intermediate gear 701 drives the intermediate follower shaft 401 to rotate, and at the same time drives the meshing side gear 701 to rotate, the side gear 701 drives the side follower shaft 601 to rotate, thus completing the rotation drive of the drive shaft 201, the intermediate follower shaft 401 and the side follower shaft 601.

[0037] Specifically, the negative pressure adsorption assembly includes an air intake pipe 801 fixed to the side wall of the drive cover plate 103 away from the drive housing 101, two air distribution seats 802 fixed to the side wall of the negative pressure adsorption housing 102 away from the drive housing 101 and located inside the removal hub 402 and the output hub 602, and several ventilation holes 803 equally spaced inside the removal slot 403 and the output slot 603. The air intake pipe 801 is connected to the negative pressure adsorption housing 102, and the two air distribution seats 802 are connected to the negative pressure adsorption housing 102 and respectively contact the inner side walls of the removal hub 402 and the output hub 602. The air distribution seat 802 inside the removal hub 402 is provided with a negative pressure zone, a transition zone and a release zone. The air distribution seat 802 inside the output hub 602 is provided with a negative pressure zone and a transition zone. The negative pressure zone has a connecting port connecting the inside and outside of the air distribution seat 802, the transition zone is a closed surface that does not connect the inside and outside, and the release zone has a connecting port connecting the air intake pipe 501 and the outside.

[0038] See appendix Figure 3 and 4 The negative pressure adsorption component is generated by a fan through a suction pipe 801 to create negative pressure inside the negative pressure adsorption housing 102 and the two air distribution seats 802. When the removal hub 402 and the output hub 602 rotate into the negative pressure area of ​​the two air distribution seats 802, that is, when the ventilation holes 803 inside the removal slot 403 and the output slot 603 are connected to the inside of the two air distribution seats 802, the removal slot 403 and the output slot 603 generate negative pressure, which can adsorb the filter rods after the test and the filter rods that pass the test respectively. When the removal hub 402 rotates to the release area of ​​the valve seat 802, the ventilation holes 803 inside the removal slot 403 are blocked by the wall of the valve seat 802 and cannot communicate with the interior. The removal slot 403 cannot generate negative pressure. At the same time, the ventilation holes 803 inside the removal slot 403 are connected to the air inlet pipe 501 through the communication port provided by the valve seat 802. Compressed air is introduced into the air inlet pipe 501 to blow off the filter rods that fail the test. When the removal hub 402 and the output hub 602 rotate to the transition area of ​​the two valve seats 802, the ventilation holes 803 inside the removal slot 403 and the output slot 603 are blocked by the walls of the two valve seats 802 and cannot communicate with the interior. Therefore, the removal slot 403 and the output slot 603 cannot generate negative pressure, and the tested filter rod and the tested and qualified filter rod fall off.

[0039] Specifically, the filter rod assembly includes a guide arm 901 and a mounting plate 904 fixed to the side wall of the negative pressure adsorption housing 102 away from the drive housing 101 by screws. The guide arm 901 is located on the side of the output hub 602 away from the removal hub 402. A guide rod 902 is fixed to the side wall of the guide arm 901 away from the negative pressure adsorption housing 102. A guide plate 903 is fixedly sleeved on the guide rod 902. The mounting plate 904 is located below the guide arm 901. An mounting arm 905 is fixed to the side wall of the mounting plate 904 away from the negative pressure adsorption housing 102. A filter rod plate 906 is fixed to the end wall of the mounting arm 905 away from the mounting plate 904. The distance between the filter rod plate 906 and the output hub 602 is too large to allow the filter rod to pass through.

[0040] See appendix Figure 2 The drop bar assembly guides the qualified filter bars on the output hub 602 located in the transition area of ​​the valve seat 802 by the guide plate 903 to prevent the qualified filter bars from being misaligned and falling off; if the output slot 603 is stuck and does not fall off, the drop bar plate 906 will push it out and make it fall off.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A terahertz-based filter rod burst blister detection apparatus, characterized by, include: Rack components; The filter rod feeding assembly, assembled on the frame assembly, clamps the filter rod to be tested and transports it to the testing position; A detection component, assembled on the frame assembly, detects the filter rods to be tested conveyed by the rod feeding assembly; The rotating rod assembly is mounted on the frame assembly and receives the filter rods after testing from the rod feeding assembly. A filter rod rejection assembly is assembled on the rotating rod assembly to reject filter rods that fail the inspection on the rotating rod assembly. The filter rod output assembly is mounted on the frame assembly and receives the qualified filter rods from the rotating rod assembly; A drive assembly, mounted on the frame assembly, drives the bar feeding assembly, the bar rotating assembly, and the bar output assembly to rotate and feed, rotate, and output the bars. The negative pressure adsorption component is assembled on the frame assembly, the rotating rod assembly, the rejecting rod assembly and the output rod assembly, so that the rotating rod assembly uses negative pressure adsorption to clamp the tested filter rod, the rejecting rod assembly removes the unqualified filter rods on the rotating rod assembly, and the output rod assembly uses negative pressure adsorption to clamp the qualified filter rods. The filter rod dropping assembly, mounted on the frame assembly, receives the qualified filter rods from the filter rod dispensing assembly and drops them for collection.

2. A terahertz-based filter rod burst blister detection apparatus according to claim 1, characterized in that: The frame assembly includes a drive housing (101), a negative pressure adsorption housing (102) is fixedly attached to the side wall of the drive housing (101) near the detection end, and a drive cover plate (103) is fixedly attached to the side wall of the drive housing (101) away from the detection end.

3. A terahertz-based filter rod burst blister detection apparatus according to claim 2, characterised in that: The rod feeding assembly includes a drive shaft (201) rotatably connected inside the drive housing (101) and the negative pressure adsorption housing (102). The drive end of the drive shaft (201) extends through the drive cover plate (103) to the outside. The mounting end of the drive shaft (201) extends to the outside of the negative pressure adsorption housing (102) and is fixedly sleeved with a detection hub (202). The outer wall of the detection hub (202) is provided with a plurality of detection slots (203) at equal intervals along the circumference.

4. A terahertz-based filter rod burst blister detection apparatus according to claim 3, characterized in that: The detection component includes a mounting bracket (301) fixed to the side wall of the drive housing (101) away from the drive cover plate (103) with one end open. The mounting bracket (301) is located below the detection hub (202). The top of the mounting bracket (301) is fixed to the detection housing (302) away from the drive housing (101). The mounting bracket (301) and the detection housing (302) cooperate to wrap the detection hub (202). The section of the detection housing (302) above the detection hub (202) is fixed to a terahertz transmitter (303). The section of the detection housing (302) below the detection hub (202) is fixed to a terahertz receiver (304). The terahertz transmitter (303) and the terahertz receiver (304) are arranged correspondingly. A processor (305) is fixed inside the detection housing (302). A detection cover plate (306) is fixed to the open end wall of the detection housing (302).

5. A terahertz-based filter rod burst blister detection apparatus according to claim 4, characterised in that: The rotating rod assembly includes an intermediate follower shaft (401) rotatably connected inside the drive housing (101) and the negative pressure adsorption housing (102). The drive end of the intermediate follower shaft (401) is rotatably connected to the drive cover plate (103). The mounting end of the intermediate follower shaft (401) extends to the outside of the negative pressure adsorption housing (102) and is fixedly sleeved with a removal hub (402). The outer wall of the removal hub (402) is provided with a plurality of removal slots (403) at equal intervals along the circumference.

6. The terahertz-based filter rod bursting bead detection device according to claim 5, characterized in that: The bar assembly includes two air inlet pipes (501) located below the detection housing (302) and symmetrically arranged along the central axis of the detection housing (302).

7. The terahertz-based filter rod bursting bead detection device according to claim 6, characterized in that: The rod output assembly includes a side follower shaft (601) rotatably connected inside the drive housing (101) and the negative pressure adsorption housing (102). The drive end of the side follower shaft (601) is rotatably connected to the drive cover plate (103). The mounting end of the side follower shaft (601) extends to the outside of the negative pressure adsorption housing (102) and is fixedly sleeved with an output hub (602). The outer wall of the output hub (602) is provided with a plurality of output slots (603) at equal intervals along the circumference.

8. The terahertz-based filter rod bursting bead detection device according to claim 7, characterized in that: The drive assembly includes three gears (701) that are respectively fixedly sleeved on the drive shaft (201), the intermediate follower shaft (401) and the side follower shaft (601) located inside the drive housing (101), and the gears (701) are meshed together.

9. A terahertz-based filter rod bead bursting detection device according to claim 8, characterized in that: The negative pressure adsorption assembly includes a suction pipe (801) fixed to the side wall of the drive cover plate (103) away from the drive housing (101), two air distribution seats (802) fixed to the side wall of the negative pressure adsorption housing (102) away from the drive housing (101) located inside the removal hub (402) and the output hub (602), and several ventilation holes (803) equally spaced inside the removal slot (403) and the output slot (603). The suction pipe (801) is connected to the negative pressure adsorption housing (102). Each air distribution seat (802) is connected to the negative pressure adsorption shell (102) and respectively contacts the inner sidewalls of the removal hub (402) and the output hub (602). The air distribution seat (802) inside the removal hub (402) is provided with a negative pressure zone, a transition zone and a release zone. The air distribution seat (802) inside the output hub (602) is provided with a negative pressure zone and a transition zone. The negative pressure zone is provided with a connecting port to connect the inside and outside of the air distribution seat (802). The transition zone is a closed surface that is not connected to the inside and outside. The release zone is provided with a connecting port to connect the air inlet pipe (501) to the outside.

10. A terahertz-based filter rod bead bursting detection device according to claim 9, characterized in that: The drop bar assembly includes a guide arm (901) and a mounting plate (904) fixed to the side wall of the negative pressure adsorption housing (102) away from the drive housing (101). The guide arm (901) is located on the side of the output hub (602) away from the removal hub (402). A guide rod (902) is fixed to the side wall of the guide arm (901) away from the negative pressure adsorption housing (102). A guide plate (903) is fixedly sleeved on the guide rod (902). The mounting plate (904) is located below the guide arm (901). An mounting arm (905) is fixed to the side wall of the mounting plate (904) away from the negative pressure adsorption housing (102). A drop bar plate (906) is fixed to the end wall of the mounting arm (905) away from the mounting plate (904). The distance between the drop bar plate (906) and the output hub (602) is too large to allow the filter rod to pass through.

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