A composite filter rod cavity blasting bead adding device

Abstract

The utility model belongs to tobacco making equipment technical field, the utility model discloses a kind of composite filter rod cavity blasting bead adding device, including adding blasting bead component, blasting bead feed component, feeding hopper component, driving assembly, recycling component and lifting assembly, adding blasting bead component includes batching disc and gas distribution disc, batching disc is rotated by the servo motor drive of driving assembly, the circumference surface of batching disc is evenly provided with a plurality of blasting bead bin along radial direction, the utility model is by setting tensioning structure between the batching disc and gas distribution disc of adding blasting bead component, constant pre-tightening force can be realized, ensure that both are closely contacted and the alignment accuracy is high;Air flow directional control is realized with the C-shaped groove negative pressure part and the positive pressure through-hole of gas distribution disc, blasting bead is evenly stressed in the process of negative pressure adsorption, positive pressure pushing, effectively avoid falling off, block or breakage, significantly improve conveying stability.

Description

Technical Field

[0001] This utility model relates to the field of tobacco manufacturing equipment technology, specifically to a composite filter rod cavity capsule adding device. Background Technology

[0002] As an important technological carrier for enhancing the sensory experience and achieving category innovation in cigarette products, flavor capsules have been widely used in Chinese cigarettes. They not only give the product a unique aroma, but also have functions such as moisturizing, reducing tar and harm, which are especially in line with consumers' demand for personalized and high-quality products.

[0003] Currently, the mainstream method for adding popping beads in the industry focuses on adding them via filament bundles during the base rod forming stage. While this method can achieve initial bonding between the popping beads and the filament bundles, it still faces technical bottlenecks in the precise addition of popping beads to the cavity section of the composite filter rod. Existing composite filter rod cavity popping bead adding equipment generally suffers from the following problems:

[0004] 1. Poor conveying stability: During the conveying process of the bursting beads, the negative pressure adsorption or mechanical pushing is relied upon. Due to the unstable pre-tightening force between the material distribution plate and the air distribution plate, alignment deviation is prone to occur, resulting in untimely switching between positive and negative pressure, which may cause the bursting beads to fall off, become blocked, or be interrupted in the conveying process.

[0005] 2. High breakage rate: Bursting beads are easily damaged during transportation due to mechanical extrusion and uneven airflow impact, affecting the stability of product quality;

[0006] 3. Low adjustment flexibility: The height of the equipment and the precision of its fit with the main unit are difficult to adjust quickly, and the operation is complicated when adapting to the production of filter rods of different specifications, which affects production efficiency;

[0007] 4. Serious waste of resources: There is a lack of effective recycling mechanism for residual popping beads, and unadded popping beads are directly discarded, increasing production costs.

[0008] Therefore, developing a composite filter rod cavity bursting bead adding device that features stable delivery, precise alignment, low bead breakage rate, strong compatibility, and convenient adjustment is key to solving the aforementioned technical pain points and is of great significance for promoting the upgrading of composite filter rod production technology. Utility Model Content

[0009] The purpose of this invention is to provide a composite filter rod cavity bursting bead adding device, which aims to solve the above-mentioned technical problems existing in the prior art.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A composite filter rod cavity bursting bead adding device includes a bursting bead adding component, a bursting bead feeding component, a feeding hopper component, a driving component, a recovery component, and a lifting component. The bursting bead adding component includes a dispensing plate and a gas dispensing plate. The dispensing plate is driven to rotate by a servo motor of the driving component. Multiple bursting bead chambers are evenly distributed radially on the circumferential surface of the dispensing plate. Each bursting bead chamber has an adsorption hole corresponding to one side of the dispensing plate. The bursting bead chambers communicate with the corresponding adsorption holes. The gas dispensing plate is disposed inside a gas plate cover, which is connected to the filter rod cavity by a bracket. The lifting component is fixedly installed. A tensioning structure is provided between the inner circular surface of the air plate cover and the non-air distribution surface of the air distribution plate. The air distribution surface of the air distribution plate is in close contact with the open circular surface of the feeding plate through the tensioning structure. The air distribution surface of the air distribution plate is provided with a positive pressure part and a negative pressure part. The negative pressure part of the air distribution plate adsorbs the popping beads input by the popping bead feeding component into the popping bead chamber through the adsorption hole, and blows the popping beads out of the popping bead chamber into the feeding hopper component through the positive pressure part. The feeding hopper component is driven by the driving component to put the popping beads into the filter rod.

[0012] In a preferred embodiment of this utility model, the negative pressure part includes a C-shaped groove and two negative pressure through holes. The C-shaped groove is opened near the edge of the air distribution surface of the air distribution plate. The two negative pressure through holes are respectively opened in the C-shaped groove near both ends and penetrate the air distribution plate axially. A negative pressure pipe joint is fixedly installed on the outer circular surface of the air plate cover corresponding to the two negative pressure through holes. The negative pressure pipe joint is connected to negative pressure air and communicates with the corresponding negative pressure through hole.

[0013] In a preferred embodiment of the present invention, the positive pressure part includes a positive pressure through hole, which extends through the bottom of the air distribution plate along its axial direction. A positive pressure pipe connector is fixedly installed on the outer circumference of the air plate cover corresponding to the positive pressure through hole. The positive pressure pipe connector is connected to positive pressure air and communicates with the positive pressure through hole.

[0014] In a preferred embodiment of this utility model, the tensioning structure includes a compression spring. The air distribution plate and the air plate cover each have a plurality of equally distributed, corresponding mounting blind holes on their opposite circular surfaces. A pressure block is movably connected within the mounting blind hole of the air plate cover. A set screw is threadedly connected to the outer circular surface of the air plate cover. One end of the set screw is tightly against one end of the pressure block, and the other end of the pressure block is inserted into one end of the compression spring. The other end of the compression spring abuts against the mounting blind hole of the air distribution plate. Several countersunk holes are evenly distributed around the air distribution plate near its axis. A connecting bolt is installed in each countersunk hole, and the threaded portion of the connecting bolt is threadedly connected to the air plate cover.

[0015] In a preferred embodiment of this utility model, the burst bead feeding assembly includes a circular feeding chamber with an annular groove on the wall of the feeding chamber. The dispensing tray is coaxially disposed within the annular groove. A storage bin is disposed on one side of the feeding chamber, and a feeding pipe communicating with the upper part of the storage bin is disposed therewith. The storage bin is connected to the annular groove through a feeding port. A speed regulating valve is disposed on the front of the storage bin. Positive pressure air is introduced into the storage bin through the speed regulating valve to blow the burst beads out through the feeding port and the annular groove into the burst bead bin. A discharge port is disposed at the bottom of the annular groove corresponding to the positive pressure part. The burst beads in the burst bead bin pass through the discharge port into the feeding hopper assembly. The feeding chamber is fixedly installed with the lifting end of the lifting assembly through a fixing seat.

[0016] In a preferred embodiment of the present invention, the lifting component includes a frame, and slide rail assemblies are fixedly installed on the left and right sides of the inner wall of the frame along the vertical direction. An equipment mounting bracket is fixedly installed between the sliders of the two sets of slide rail assemblies. The back of the equipment mounting bracket is fixedly installed to the end of the telescopic shaft of the cylinder. The cylinder is fixedly installed on the top of the frame along the vertical direction.

[0017] In a preferred embodiment of the present invention, the drive assembly is fixedly installed in the middle of the equipment mounting frame, and a plurality of feeding hopper assemblies are evenly fixedly installed on the surface of the annular synchronous belt of the drive assembly. One end of the drive assembly is provided with a recycling assembly to realize the recycling of excess popping beads.

[0018] The beneficial effects of this utility model are:

[0019] 1. Improve the stability and accuracy of menthol capsule delivery.

[0020] By setting a tensioning structure (such as a compression spring) between the feeding disc and the air distribution disc where the popping bead assembly is added, a constant preload can be achieved, ensuring that the two are in close contact and have high alignment accuracy. Combined with the airflow directional control of the negative pressure part of the C-shaped groove and the positive pressure through hole of the air distribution disc, the popping beads are subjected to uniform force during the negative pressure adsorption and positive pressure pushing process, effectively avoiding falling off, clogging or breakage, and significantly improving the conveying stability.

[0021] 2. Highly adaptable and easy to adjust

[0022] The lifting assembly uses a cylinder to drive the slide rail assembly to achieve synchronous lifting and lowering of the equipment mounting frame. It can quickly adjust the relative position of the feeding hopper assembly and the smoke gun cloth belt cavity to adapt to the production needs of filter rods of different specifications. The waist-shaped hole design in the middle of the bracket facilitates the adjustment of the relative position of the gas distribution plate seat and the material distribution plate, further optimizing the matching accuracy between the equipment and the main unit.

[0023] 3. Reduce waste and improve production efficiency

[0024] The addition of a recycling component allows for negative pressure recovery of residual popping beads within the feeding chamber, preventing resource waste. Simultaneously, the drive component uses a servo motor to synchronize with the host machine's operating speed, ensuring that the popping bead addition rhythm matches the filter rod forming progress, thus improving production continuity and efficiency.

[0025] 4. Optimize the fluidized bed delivery of the burst beads to avoid blockages.

[0026] The feeding chamber assembly regulates the positive pressure airflow through a throttle valve, so that the popping beads in the temporary storage chamber are in a fluidized and suspended state, effectively preventing the popping beads from accumulating and clogging. Combined with the negative pressure adsorption of the dispensing tray, the popping beads enter the popping bead chamber in an orderly manner, further improving the feeding smoothness. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the front view of the present invention.

[0028] Figure 2 This is a schematic diagram of the three-dimensional assembly structure with added popping bead components and popping bead feeding components.

[0029] Figure 3 This is a 3D structural diagram of the addition of the popping bead component;

[0030] Figure 4 This is a schematic diagram of a 3D explosion structure with added popping bead components;

[0031] Figure 5 This is a schematic diagram of the planar structure of the ingredient tray;

[0032] Figure 6 This is a schematic diagram of the planar structure of the valve train;

[0033] Figure 7 This is a schematic diagram of the planar structure of the tensioned structure;

[0034] Figure 8 This is a three-dimensional structural diagram of the burst bead feeding assembly;

[0035] Figure 9 This is a three-dimensional schematic diagram of the lifting component.

[0036] Reference numerals; where: 1. Adding burst bead assembly; 11. Feeding tray; 1101. Adsorption hole; 1102. Bursting bead chamber; 12. Gas distribution tray; 1201. Positive pressure through hole; 1202. C-groove; 1203. Negative pressure through hole; 1204. Mounting blind hole; 1205. Countersunk hole; 13. Tensioning structure; 131. Set screw; 132. Pressure block; 133. Compression spring; 134. Connecting bolt; 14. Air plate cover; 1 5. Negative pressure pipe connector; 16. Bracket; 17. Positive pressure pipe connector; 2. Bursting bead feeding assembly; 21. Fixed base; 22. Feeding chamber; 23. Annular groove; 24. Discharge port; 25. Storage bin; 26. Feeding port; 27. Speed ​​control valve; 28. Feeding pipe; 3. Feeding hopper assembly; 4. Drive assembly; 5. Recycling assembly; 6. Lifting assembly; 61. Frame; 62. Equipment mounting frame; 63. Slide rail assembly; 64. Cylinder. Detailed Implementation

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0038] Example:

[0039] Please refer to the example below. Figure 1-9As shown, this embodiment provides a composite filter rod cavity bursting bead adding device, including a bursting bead adding component 1, a bursting bead feeding component 2, a feeding hopper component 3, a driving component 4, a recovery component 5, and a lifting component 6. The bursting bead adding component 1 includes a dispensing plate 11 and a gas dispensing plate 12. The dispensing plate 11 is driven to rotate by a servo motor of the driving component 4. Multiple bursting bead chambers 1102 are evenly distributed radially on the circumferential surface of the dispensing plate 11. Each bursting bead chamber 1102 has an adsorption hole 1101 corresponding to one side of the dispensing plate 11. The bursting bead chamber 1102 communicates with the corresponding adsorption hole 1101. The gas dispensing plate 12 is disposed on the gas plate cover. Inside the air plate cover 14, the air plate cover 14 is fixedly installed with the lifting component 6 via the bracket 16. A tensioning structure 13 is provided between the inner circular surface of the air plate cover 14 and the non-air distribution surface of the air distribution plate 12. The air distribution surface of the air distribution plate 12 is in close contact with the open circular surface of the feeding plate 11 through the tensioning structure 13. The air distribution surface of the air distribution plate 12 is provided with a positive pressure part and a negative pressure part. The negative pressure part of the air distribution plate 12 adsorbs the popping beads input by the popping bead feeding component 2 into the popping bead chamber 1102 through the adsorption hole 1101, and blows the popping beads out of the popping bead chamber 1102 into the feeding hopper component 3 through the positive pressure part. The feeding hopper component 3 is driven by the driving component 4 to put the popping beads into the filter rod.

[0040] In a preferred embodiment of the present invention, the drive assembly 4 is fixedly installed in the middle of the equipment mounting frame 62, and multiple feeding hopper assemblies 3 are evenly fixedly installed on the surface of the annular synchronous belt of the drive assembly 4. A recycling assembly 5 is provided at one end of the drive assembly 4 to realize the recycling of excess popping beads.

[0041] Specifically, such as Figure 1-2 As shown, this composite filter rod cavity bursting bead adding device achieves synchronous lifting and lowering of the drive component 4, feeding hopper component 3, bursting bead feeding component 2, and bursting bead adding component 1 through the lifting component 6. The drive component 4 drives the bursting bead adding component 1 and feeding hopper component 3 to reciprocate in a circular motion and achieves synchronization with the running speed of the main machine. The bursting bead feeding component 2 adds bursting beads into the bursting bead adding component 1. The feeding hopper component 3 adds the bursting beads conveyed from the bursting bead adding component 1 onto the forming fabric belt of the main machine. The recycling component 5 recycles the remaining bursting beads in the feeding hopper component 3. By adopting a tensioning structure 13 between the dispensing plate 11 and the air dispensing plate 12 of the bursting bead adding component, a constant pre-tension force is achieved, the alignment accuracy is improved, the positive and negative pressure is stably conveyed to the dispensing plate 11, and the feeding stability is optimized.

[0042] In a preferred embodiment of this utility model, the negative pressure part includes a C-shaped groove 1202 and two negative pressure through holes 1203. The C-shaped groove 1202 is opened near the edge of the air distribution surface of the air distribution plate 12. The two negative pressure through holes 1203 are respectively opened in the C-shaped groove 1202 near both ends and penetrate the air distribution plate 12 axially. A negative pressure pipe joint 15 is fixedly installed on the outer circular surface of the air plate cover 14 corresponding to the two negative pressure through holes 1203. The negative pressure pipe joint 15 is connected to negative pressure air and communicates with the corresponding negative pressure through hole 1203.

[0043] In a preferred embodiment of the present invention, the positive pressure part includes a positive pressure through hole 1201, which extends through the bottom of the air distribution plate 12 along its axial direction. A positive pressure pipe connector 17 is fixedly installed on the outer circumference of the air plate cover 14 corresponding to the positive pressure through hole 1201. The positive pressure pipe connector 17 is connected to positive pressure air and communicates with the positive pressure through hole 1201.

[0044] Specifically, such as Figure 3-6 As shown, the bursting bead feeding assembly 2 sequentially feeds bursting beads into the bursting bead chambers 1102 around the rotating mixing plate 11. Negative pressure air is introduced into the negative pressure holes through the negative pressure pipe connector 15, thereby generating negative pressure in the C-shaped groove 1202. Since the rounded corners of the C-shaped groove 1202 are obtuse angles, they can act on most of the adsorption holes 1101 on the circular surface of the mixing plate 11, thereby adsorbing the bursting beads in the bursting bead chambers 1102 through negative pressure to prevent them from falling out. When the mixing plate 11 rotates through the positive pressure through hole 1201, the positive pressure air output by the positive pressure pipe connector 17 blows the bursting beads out of the bursting bead chambers 1102 through the adsorption holes 1101, and then they fall into the feeding hopper assembly 3.

[0045] In a preferred embodiment of this utility model, the tensioning structure 13 includes a compression spring 133. The air distribution plate 12 and the air plate cover 14 are evenly provided with a number of corresponding mounting blind holes 1204 on their respective circular surfaces. A pressure block 132 is movably connected in the mounting blind hole 1204 of the air plate cover 14. A set screw 131 is threadedly connected to the outer circular surface of the air plate cover 14. One end of the set screw 131 is close to one end of the pressure block 132. The other end of the pressure block 132 is inserted into one end of the compression spring 133. The other end of the compression spring 133 abuts against the mounting blind hole 1204 of the air distribution plate 12. Several countersunk holes 1205 are evenly provided around the air distribution plate 12 near the axis. A connecting bolt 134 is provided in the countersunk hole 1205. The threaded part of the connecting bolt 134 is threadedly connected to the air plate cover 14.

[0046] Specifically, such as Figure 7As shown, by connecting the air distribution plate 12 and the air plate cover 14 with multiple sets of connecting bolts 134 but not tightening them, the position of the air distribution plate 12 and the air plate cover 14 can be adjusted. At the same time, a compression spring 133 is set in one (two) set of corresponding mounting blind holes 1204, so that the air distribution plate 12 can be closely attached to the feeding plate 11 to distribute air and apply negative and positive pressure. Since the air distribution plate 12 is stationary while the feeding plate 11 is constantly rotating, the pressure of the air distribution plate 12 in contact with the feeding plate 11 cannot be excessive. If the pressure is too large (affecting the rotation of the mixing plate 11) or too small (causing the air distribution plate 12 to be unable to control the movement of the exploding beads inside the mixing plate 11), then the pressure of the compression spring 133 needs to be adjustable. Therefore, a pressure block 132 that can move axially is placed in the mounting blind hole 1204 of the air plate cover 14, and a set screw 131 is threaded onto the air plate cover 14 and extends into the mounting blind hole 1204. By turning the set screw 131, the position of the pressure block is changed, thereby controlling the compression amount of the compression spring 133, and thus controlling the pressure of the air distribution plate 12 contacting the mixing plate 11 to always be within a reasonable range.

[0047] In a preferred embodiment of this utility model, the bursting bead feeding assembly 2 includes a circular feeding chamber 22. The wall of the feeding chamber 22 is provided with an annular groove 23. The feeding plate 11 is coaxially disposed in the annular groove 23. A storage bin 25 is provided on one side of the feeding chamber 22. A feeding pipe 28 communicating with the storage bin 25 is provided on the upper part of the storage bin 25. The storage bin 25 is connected to the annular groove 23 through the feeding port 26. A speed regulating valve 27 is provided on the front of the storage bin 25. Positive pressure air is introduced into the storage bin 25 through the speed regulating valve 27 to blow the bursting beads out and enter the bursting bead chamber 1102 through the feeding port 26 and the annular groove 23. A discharge port 24 is provided at the bottom of the annular groove 23 corresponding to the positive pressure part. The bursting beads in the bursting bead chamber 1102 pass through the discharge port 24 and enter the feeding hopper assembly 3. The feeding chamber 22 is fixedly installed with the lifting end of the lifting assembly 6 through the fixing seat 21.

[0048] Specifically, such as Figure 8 As shown, the burst beads enter the storage bin 25 through the feed pipe 28, and the positive pressure air input into the storage bin 25 is adjusted by the speed regulating valve 27, thereby controlling the burst beads to enter the annular groove 23 in an orderly manner from the feed port 26, and finally enter the burst bead bin 1102 that passes through the feed port 26 in sequence. It is conveyed with the rotation of the feeding plate 11, and when it passes through the discharge port 24, it is discharged into the feeding hopper assembly 3 under the influence of positive pressure air.

[0049] In a preferred embodiment of the present invention, the lifting component 6 includes a frame 61, and slide rail components 63 are fixedly installed on the left and right sides of the inner wall of the frame 61 along the vertical direction. An equipment mounting bracket 62 is fixedly installed between the sliders of the two sets of slide rail components 63. The back of the equipment mounting bracket 62 is fixedly installed to the end of the telescopic shaft of the cylinder 64. The cylinder 64 is fixedly installed on the top of the frame 61 along the vertical direction.

[0050] Specifically, such as Figure 9 As shown, the device mounting bracket 62 is adjusted by extending and retracting the cylinder 64, thereby simultaneously adjusting the adding popping bead component 1, popping bead feeding component 2, feeding hopper component 3 and drive component 4, and simultaneously adjusting the recovery component 5 for matching, thereby realizing the rapid adjustment of the production equipment to meet the different needs of the production line process.

[0051] The working principle of this composite filter rod cavity bursting bead adding device is as follows: After fixing this device to the original machine frame...

[0052] The installation height of the feeding hopper assembly 3 is adjusted by cylinder 64 to maintain a preset distance between its discharge port and the cavity of the smoke gun cloth belt, ensuring that the flavor capsules fall accurately into the filter rod cavity.

[0053] After the main unit starts, this device starts synchronously with the main unit. The servo motor of the drive component 4 drives the feeding hopper component 3 and the dispensing plate 11 to move clockwise in a circular motion. The popping beads are fed into the storage bin 25 through the feed pipe 28. The positive pressure airflow introduced by the speed regulating valve 27 makes the popping beads in the storage bin 25 fluidized and suspended, avoiding accumulation and blockage. The negative pressure through hole 1203 of the air distribution plate 12 introduces the negative pressure airflow into the popping bead bin 1102 through the C-shaped groove 1202 and the adsorption hole 1101. Under the action of negative pressure adsorption, the popping beads are adsorbed in the popping bead bin 1102 and rotate synchronously with the dispensing plate 11. When the dispensing plate 11 rotates, the popping beads rotates clockwise in a circular motion. When rotated to the six o'clock position, the adsorption hole 1101 connects with the positive pressure through hole 1201 on the air distribution plate 12, introducing the positive pressure airflow into the capsule chamber 1102 of the mixing plate 11. At the same time, the negative pressure channel is automatically cut off, and the capsules are pushed out of the adsorption state by the positive pressure airflow and are sprayed directionally into the hopper of the feeding hopper assembly 3. The capsules fall freely into the filter rod cavity below the cigarette gun cloth belt. After the capsules are added, the feeding hopper assembly 3 continues to rotate and enters the recycling device. The residual capsules are sucked into the recycling device by the negative pressure airflow, ensuring that there are no residual capsules in the hopper of the feeding hopper assembly 3 before entering the next cycle operation.

[0054] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A composite filter rod cavity bursting bead adding device, comprising a bursting bead adding assembly (1), a bursting bead feeding assembly (2), a feeding hopper assembly (3), a driving assembly (4), a recovery assembly (5), and a lifting assembly (6), characterized in that, The popping bead addition component (1) includes a dispensing tray (11) and an air dispensing tray (12). The dispensing tray (11) is rotated by a servo motor driven by the driving component (4). Multiple popping bead chambers (1102) are evenly distributed radially on the circumferential surface of the dispensing tray (11). Each popping bead chamber (1102) has an adsorption hole (1101) on one side of the dispensing tray (11). The popping bead chamber (1102) communicates with the corresponding adsorption hole (1101). The air dispensing tray (12) is located inside the air plate cover (14). The air plate cover (14) is fixedly installed to the lifting component (6) by a bracket (16). Inside the air plate cover (14) A tensioning structure (13) is provided between the circular surface and the non-distribution surface of the air distribution plate (12). The air distribution surface of the air distribution plate (12) is in close contact with the open circular surface of the material distribution plate (11) through the tensioning structure (13). The air distribution surface of the air distribution plate (12) is provided with a positive pressure part and a negative pressure part. The negative pressure part of the air distribution plate (12) adsorbs the popping beads input by the popping bead feeding assembly (2) into the popping bead chamber (1102) through the adsorption hole (1101), and blows the popping beads out of the popping bead chamber (1102) into the feeding hopper assembly (3) through the positive pressure part. The feeding hopper assembly (3) is driven by the driving assembly (4) to put the popping beads into the filter rod.

2. The composite filter rod cavity bursting bead adding device according to claim 1, characterized in that, The negative pressure section includes a C-shaped groove (1202) and two negative pressure through holes (1203). The C-shaped groove (1202) is opened on the air distribution surface of the air distribution plate (12) near the edge. The two negative pressure through holes (1203) are respectively opened in the C-shaped groove (1202) near both ends and pass through the air distribution plate (12) axially. The outer circular surface of the air plate cover (14) is fixedly installed with a negative pressure pipe joint (15) at the two negative pressure through holes (1203). The negative pressure pipe joint (15) is connected to negative pressure air and communicates with the corresponding negative pressure through hole (1203).

3. The composite filter rod cavity bursting bead adding device according to claim 2, characterized in that, The positive pressure section includes a positive pressure through hole (1201), which extends through the bottom of the air distribution plate (12) along its axial direction. A positive pressure pipe connector (17) is fixedly installed on the outer circumference of the air plate cover (14) corresponding to the positive pressure through hole (1201). The positive pressure pipe connector (17) is connected to positive pressure air and communicates with the positive pressure through hole (1201).

4. The composite filter rod cavity bursting bead adding device according to claim 3, characterized in that, The tensioning structure (13) includes a compression spring (133). The air distribution plate (12) and the air plate cover (14) are both uniformly provided with a plurality of identical and corresponding mounting blind holes (1204) on their opposite circular surfaces. A pressure block (132) is movably connected within the mounting blind hole (1204) of the air plate cover (14). A set screw (131) is threaded onto the outer circular surface of the air plate cover (14), with one end of the set screw (131) tightly abutting the pressure block (132). 2) At one end, the other end of the pressure block (132) is inserted into one end of the pressure spring (133), and the other end of the pressure spring (133) abuts against the mounting blind hole (1204) of the air distribution plate (12). The air distribution plate (12) has several countersunk holes (1205) evenly opened around the axis. A connecting bolt (134) is provided in the countersunk hole (1205), and the threaded part of the connecting bolt (134) is threadedly connected to the air plate cover (14).

5. The composite filter rod cavity bursting bead adding device according to claim 1, characterized in that, The popping bead feeding assembly (2) includes a circular feeding chamber (22). A ring groove (23) is provided on the wall of the feeding chamber (22). The dispensing tray (11) is coaxially disposed within the ring groove (23). A storage bin (25) is provided on one side of the feeding chamber (22). A feeding pipe (28) communicating with the upper part of the storage bin (25) is provided. The storage bin (25) is connected to the ring groove (23) through a feeding port (26). A speed regulating valve (28) is provided on the front of the storage bin (25). 7) The storage bin (25) is connected to positive pressure air through the speed regulating valve (27) to blow out the bursting beads through the feed port (26) and the annular groove (23) into the bursting bead bin (1102). The bottom of the annular groove (23) is provided with a discharge port (24) corresponding to the positive pressure part. The bursting beads in the bursting bead bin (1102) pass through the discharge port (24) and enter the feeding hopper assembly (3). The feeding chamber (22) is fixedly installed with the lifting end of the lifting assembly (6) through the fixed seat (21).

6. The composite filter rod cavity bursting bead adding device according to claim 1, characterized in that, The lifting component (6) includes a frame (61). Slide rail assemblies (63) are fixedly installed on the left and right sides of the inner wall of the frame (61) in the vertical direction. Equipment mounting brackets (62) are fixedly installed between the sliders of the two sets of slide rail assemblies (63). The back of the equipment mounting bracket (62) is fixedly installed to the end of the telescopic shaft of the cylinder (64). The cylinder (64) is fixedly installed on the top of the frame (61) in the vertical direction.

7. The composite filter rod cavity bursting bead adding device according to claim 6, characterized in that, The drive assembly (4) is fixedly installed in the middle of the equipment mounting frame (62), and multiple feeding hopper assemblies (3) are evenly fixedly installed on the surface of the annular synchronous belt of the drive assembly (4). A recycling assembly (5) is provided at one end of the drive assembly (4) to realize the recycling of excess popping beads.

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