Filter stick blanking positioning device

Abstract

The invention discloses a filter stick blanking positioning device which comprises a drum wheel, a fixing plate, an adjusting assembly, a detecting assembly and a displacement assembly. The adjusting assembly comprises a positive pressure air pipe and a braking air outlet plate, the first end of the positive pressure air pipe penetrates through the fixing plate and communicates with an external positive pressure air source, the first end of the braking air outlet plate communicates with the second end of the positive pressure air pipe, the second end of the braking air outlet plate is arranged towards the containing groove, and the braking air outlet plate is located at the second end of the drum wheel; the detection assembly is used for detecting the position of the filter stick; the displacement assembly is used for moving the filter stick so that the filter stick can be located in the containing groove. In the process that the filter stick enters the containing groove, positive pressure gas guided into the containing groove by the brake air outlet plate acts on the filter stick, so that the speed of the filter stick is reduced, and the filter stick is prevented from colliding with the check ring; and meanwhile, the detection assembly detects the position of the filter stick, and the position of the filter stick is repaired through the control assembly and the displacement assembly, so that the filter stick is stably located in the containing groove, and the problem that the negative pressure air duct is blocked is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette machinery and equipment, and more specifically to a filter rod blanking positioning device. Background Art

[0002] A filter rod is a round rod of a certain length that is made of filter materials such as acetate fiber bundles and polypropylene bundles and has a filtering function. In the existing equipment in this industry, the filter rod is basically fed by free fall into the groove of the drum wheel, and the filter rod is adsorbed in the groove by negative pressure air.

[0003] However, the negative pressure air in the groove of the drum wheel is generally provided by a negative pressure fan. After long-term use, dust and impurities will enter the negative pressure channel under the action of negative pressure air. Too much dust will be adsorbed in the air duct, which will cause the air duct to be blocked. The negative pressure in the groove of the drum wheel will gradually decrease, and the braking effect of the filter rod will also weaken, which may easily cause the filter rod to collide with the retaining ring of the drum wheel, resulting in quality accidents of the filter rod contacts.

[0004] Therefore, how to provide a filter rod drop positioning device has become a technical problem that urgently needs to be solved in the field. Summary of the invention

[0005] An object of the present invention is to provide a new technical solution for a filter rod drop positioning device.

[0006] According to a first aspect of the present invention, a filter rod drop positioning device is provided, comprising: a drum, a fixing plate, an adjustment component, a detection component and a displacement component;

[0007] The first end of the drum wheel is rotatably arranged on the fixed plate, and the drum wheel is provided with a plurality of limit plates and retaining rings, the limit plates are evenly spaced and arranged on the outer peripheral wall of the drum wheel, the retaining ring is sleeved on the drum wheel, and the retaining ring is connected to the first end of the limit plate, and two adjacent limit plates and the retaining ring form a placement groove, and the placement groove is used to place the filter rod;

[0008] The adjustment assembly includes a positive pressure air duct and a brake air outlet plate, wherein the first end of the positive pressure air duct passes through the fixing plate and is connected to an external positive pressure air source, the first end of the brake air outlet plate is connected to the second end of the positive pressure air duct, the second end of the brake air outlet plate is arranged toward the placement slot, and the brake air outlet plate is located at the second end of the drum wheel;

[0009] The detection component is used to detect the position of the filter rod; the displacement component is used to move the filter rod so that the filter rod is located in the placement groove.

[0010] Optionally, a first air guide hole is provided in the brake air outlet plate, and a first end of the first air guide hole is connected to the positive pressure air duct.

[0011] Optionally, a plurality of through holes are provided on the retaining ring, and the plurality of through holes are evenly spaced apart. The second end of the brake air outlet plate is provided close to the retaining ring, and the second end of the first air guide hole is in communication with the through holes.

[0012] Optionally, the adjustment assembly includes a negative pressure air duct and an air suction guide plate, the first end of the negative pressure air duct passes through the fixed plate and is connected to an external negative pressure air source, the first end of the air suction guide plate is connected to the second end of the negative pressure air duct, the second end of the air suction guide plate is arranged close to the retaining ring, and the air suction guide plate is located downstream of the brake air outlet plate and at the second end of the drum wheel.

[0013] Optionally, a second air guide hole is provided in the air intake guide plate, a first end of the second air guide hole is communicated with the negative pressure air duct, and a second end of the second air guide hole is communicated with the through hole.

[0014] Optionally, a fixing ring is further provided at the second end of the drum, and a mounting groove is formed between the fixing ring and the retaining ring;

[0015] The second end of the brake air outlet plate and the second end of the air intake guide plate are respectively provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion are respectively located inside the mounting groove, and the top of the second end of the brake air outlet plate and the top of the second end of the air intake guide plate are both slidably connected to the fixing ring.

[0016] Optionally, the detection assembly includes a mounting plate, a controller and a position detection sensor, the mounting plate is vertically connected to the fixing plate, and the mounting plate is located above the drum wheel, the position detection sensor is arranged on the mounting plate, and the position detection sensor is used to detect whether the filter rod is located outside the placement groove;

[0017] The controller is electrically connected to the position detection sensor, the external positive pressure air source and the displacement component, and the controller is used to regulate the flow rate of the external positive pressure air source outputting the positive pressure air duct.

[0018] Optionally, the distance between the position detection sensor and the fixing plate is equal to the distance between the second end of the limiting plate and the fixing plate.

[0019] Optionally, the detection component further includes an alarm, which is electrically connected to the controller and is used to emit a sound alarm and / or display an alarm.

[0020] Optionally, the displacement assembly also includes a driving cylinder, a pushing plate and a connecting rod, the driving cylinder is arranged on the fixed plate, the first end of the connecting rod is connected to the output end of the driving cylinder, the second end of the connecting rod passes through the fixed plate and is connected to the pushing plate, the pushing plate is located between the fixed plate and the drum wheel, and the driving cylinder is electrically connected to the controller.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges the limit plates evenly at intervals on the outer peripheral wall of the drum, the retaining ring is sleeved on the drum, and the retaining ring is connected to the first end of the limit plates, two adjacent limit plates and the retaining ring form a placement groove, and the first end of the positive pressure air duct is passed through the fixed plate and connected to the external positive pressure air source, the first end of the brake air outlet plate is connected to the second end of the positive pressure air duct, the second end of the brake air outlet plate is arranged toward the placement groove, and the brake air outlet plate is located at the second end of the drum. During operation, the external positive pressure air source introduces positive pressure gas into the placement groove through the positive pressure air duct and the brake air outlet plate, and in the process of the filter rod entering the placement groove, the positive pressure gas acts on the filter rod to reduce the speed of the filter rod, so as to avoid the collision between the filter rod and the retaining ring; at the same time, the detection component detects the position of the filter rod, and repairs the position of the filter rod through the control component and the displacement component, so that the filter rod is stably placed in the placement groove, avoiding the problem of blockage of the negative pressure air duct, enhancing the utilization rate of space, saving energy and strictly ensuring product quality.

[0023] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 It is a structural diagram of the filter rod dropping and positioning device of the present invention;

[0026] Figure 2 is a structural diagram of the detection component of the present invention;

[0027] Figure 3 It is a structural diagram of the displacement assembly of the present invention.

[0028] The markings in the figure are as follows: 1. Drum wheel; 11. Limit plate; 12. Retaining ring; 13. Placement groove; 14. Through hole; 15. Fixing ring; 16. Mounting groove; 2. Fixing plate; 3. Adjustment assembly; 31. Positive pressure air duct; 32. Brake air outlet plate; 33. Negative pressure air duct; 34. Intake guide plate; 4. Detection assembly; 41. Mounting plate; 42. Position detection sensor; 43. Alarm; 5. Displacement assembly; 51. Drive cylinder; 52. Push plate; 53. Connecting rod. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0033] like Figures 1 to 3 As shown, an embodiment of the present invention provides a filter rod drop positioning device, comprising: a drum wheel 1, a fixing plate 2, an adjustment component 3, a detection component 4 and a displacement component 5.

[0034] The first end of the drum wheel 1 is rotatably set on the fixed plate 2, and the drum wheel 1 has a plurality of limit plates 11 and retaining rings 12. The limit plates 11 are evenly spaced on the outer peripheral wall of the drum wheel 1, and the retaining ring 12 is sleeved on the drum wheel 1, and the retaining ring 12 is connected to the first end of the limit plate 11. Two adjacent limit plates 11 and the retaining ring 12 form a placement groove 13, and the placement groove 13 is used to place the filter rod.

[0035] Specifically, the width of the placement groove 13 is slightly larger than the diameter of the filter rod, and the length of the placement groove 13 is much larger than the length of the filter rod. The height of the retaining ring 12 is equal to the height of the limiting plate 11.

[0036] The adjustment component 3 includes a positive pressure air duct 31 and a brake air outlet plate 32. The first end of the positive pressure air duct 31 passes through the fixed plate 2 and is connected to an external positive pressure air source. The first end of the brake air outlet plate 32 is connected to the second end of the positive pressure air duct 31. The second end of the brake air outlet plate 32 is arranged toward the placement groove 13, and the brake air outlet plate 32 is located at the second end of the drum wheel 1.

[0037] Specifically, an external positive pressure gas source introduces positive pressure gas into the positive pressure air duct 31, and the positive pressure gas is introduced into the brake air outlet plate 32 through the positive pressure air duct 31, and then the positive pressure gas is introduced into the placement groove 13 to slow down the filter rod, so that the filter rod stays in the placement groove 13 without colliding with the retaining ring 12.

[0038] The detection component 4 is used to detect the position of the filter rod; the displacement component 5 is used to move the filter rod so that the filter rod is located in the placement groove 13.

[0039] Specifically, when the detection component 4 detects that the filter rod is located outside the placement slot 13 , the detection component 4 controls the displacement component 5 to work, and the displacement component 5 acts on the filter rod, thereby moving the filter rod to the inside of the placement slot 13 .

[0040] During operation, an external positive pressure air source introduces positive pressure gas into the placement slot 13 through the positive pressure air duct 31 and the brake air outlet plate 32. When the filter rod enters the placement slot 13, the positive pressure gas acts on the filter rod, causing the filter rod to slow down to avoid collision between the filter rod and the retaining ring 12. At the same time, the detection component 4 detects the position of the filter rod and repairs the position of the filter rod through the control component and the displacement component 5 to ensure that the filter rod is stably placed in the placement slot 13.

[0041] The present invention arranges the limit plates 11 on the outer wall of the drum 1 at even intervals, the retaining ring 12 is sleeved on the drum 1, and the retaining ring 12 is connected to the first end of the limit plate 11, two adjacent limit plates 11 and the retaining ring 12 form a placement groove 13, and the first end of the positive pressure air duct 31 passes through the fixed plate 2 and is connected to the external positive pressure air source, the first end of the brake air outlet plate 32 is connected to the second end of the positive pressure air duct 31, the second end of the brake air outlet plate 32 is arranged toward the placement groove 13, and the brake air outlet plate 32 is located at the second end of the drum 1. During operation, an external positive pressure air source introduces positive pressure gas into the placement slot 13 through the positive pressure air duct 31 and the brake air outlet plate 32. When the filter rod enters the placement slot 13, the positive pressure gas acts on the filter rod to slow down the filter rod to avoid collision between the filter rod and the retaining ring 12. At the same time, the detection component 4 detects the position of the filter rod and repairs the position of the filter rod through the control component and the displacement component 5 to ensure that the filter rod is stably placed in the placement slot 13, avoiding the problem of blockage of the negative pressure air duct, enhancing the utilization rate of the space, saving energy and strictly ensuring product quality.

[0042] In one embodiment of the filter rod blanking positioning device of the present invention, a first air guide hole is arranged in the brake air outlet plate 32, and the first end of the first air guide hole is connected to the positive pressure air duct 31, and the first air guide hole passes through the two ends of the brake air outlet plate 32 respectively, so that the positive pressure gas inside the positive pressure air duct 31 can be smoothly introduced into the brake air outlet plate 32, and then the positive pressure gas discharged from the brake air outlet plate 32 acts on the filter rod in the placement slot 13, so that the filter rod is decelerated and stays in the placement slot 13.

[0043] In one embodiment of the filter rod drop positioning device of the present invention, as Figure 1 As shown, the retaining ring 12 is provided with a plurality of through holes 14 , which are evenly spaced apart. The second end of the brake air outlet plate 32 is disposed close to the retaining ring 12 , and the second end of the first air guide hole is in communication with the through hole 14 .

[0044] Specifically, the plurality of through holes 14 are respectively connected to the plurality of placement grooves 13. When the drum 1 is rotating, the plurality of through holes 14 are sequentially connected to the first air guide holes of the brake air outlet plate 32, so that the positive pressure gas is blown into the placement grooves 13.

[0045] In one embodiment of the filter rod drop positioning device of the present invention, as Figure 1 As shown, the displacement assembly 5 includes a negative pressure air duct 33 and an air suction guide plate 34. The first end of the negative pressure air duct 33 passes through the fixed plate 2 and is connected to an external negative pressure air source. The first end of the air suction guide plate 34 is connected to the second end of the negative pressure air duct 33. The second end of the air suction guide plate 34 is arranged close to the retaining ring 12. The air suction guide plate 34 is located downstream of the brake air outlet plate 32 and at the second end of the drum wheel 1.

[0046] Specifically, during operation, the external negative pressure air source is in an open state, and the external negative pressure air source draws air into the negative pressure air duct 33, so that the negative pressure air duct 33 and the air suction guide plate 34 are in a negative pressure state, and then the air suction guide plate 34 draws air into the placement groove 13, thereby acting on the filter rod inside the placement groove 13, so that the filter rod slowly moves toward the retaining ring 12 until it abuts against the retaining ring 12.

[0047] The present invention connects the first end of the negative pressure air duct 33 to an external negative pressure air source by passing the first end of the fixed plate 2, and the first end of the air suction guide plate 34 is connected to the second end of the negative pressure air duct 33, and the second end of the air suction guide plate 34 is arranged close to the retaining ring 12, and the air suction guide plate 34 is located downstream of the brake air outlet plate 32. Through the action of the negative pressure air duct 33 and the air suction guide plate 34, the filter rods in the multiple placement grooves 13 on the drum wheel 1 can all abut against the retaining ring 12 to achieve the effect of aligning the filter rods.

[0048] In one embodiment of the filter rod blanking positioning device of the present invention, a second air guide hole is provided in the air suction guide plate 34 , a first end of the second air guide hole is connected to the negative pressure air duct 33 , and a second end of the second air guide hole is connected to the through hole 14 .

[0049] The present invention connects the first end of the second air guide hole with the negative pressure air duct 33, and the second end of the second air guide hole with the through hole 14, thereby ensuring that the air suction guide plate 34 can suck out the air in the placement groove 13 through the through hole 14, so that the placement groove 13 is in a negative pressure device, so as to slowly move the filter rod to contact with the retaining ring 12.

[0050] In one embodiment of the filter rod drop positioning device of the present invention, as Figure 1 As shown, a fixing ring 15 is further provided at the second end of the drum 1 , and a mounting groove 16 is formed between the fixing ring 15 and the retaining ring 12 .

[0051] The second end of the brake air outlet plate 32 and the second end of the air suction guide plate 34 are respectively provided with a first protrusion and a second protrusion, which are respectively located inside the mounting groove 16, and the top of the second end of the brake air outlet plate 32 and the top of the second end of the air suction guide plate 34 are both slidably connected to the fixing ring 15.

[0052] It should be noted that the top of the second end of the brake air outlet plate 32 and the top of the second end of the air intake guide plate 34 may also have a distance from the top of the fixing ring 15; or, a snap-in groove is respectively provided at the second end of the brake air outlet plate 32 and the second end of the air intake guide plate 34, so that the snap-in groove is snap-fitted with the fixing ring 15. The above description is actually merely illustrative and is by no means a limitation to the present invention and its application or use.

[0053] The present invention improves the safety and stability of the filter rod blanking positioning device of the present invention when in use by positioning the first protrusion and the second protrusion respectively inside the mounting groove 16, and the top of the second end of the brake air outlet plate 32 and the top of the second end of the air suction guide plate 34 are both slidably connected to the fixing ring 15, thereby providing support for the brake air outlet plate 32 and the air suction guide plate 34.

[0054] In one embodiment of the filter rod drop positioning device of the present invention, as Figure 2 and Figure 3 As shown, the detection component 4 includes a mounting plate 41, a controller (not shown in the figure) and a position detection sensor 42. The mounting plate 41 is vertically connected to the fixed plate 2, and the mounting plate 41 is located above the drum wheel 1. The position detection sensor 42 is arranged on the mounting plate 41. The position detection sensor 42 is used to detect whether the filter rod is located outside the placement groove 13.

[0055] The controller is electrically connected to the position detection sensor 42 , the external positive pressure air source and the displacement assembly 5 , and the controller is used to regulate the flow rate of the external positive pressure air source outputting the positive pressure air duct 31 .

[0056] Specifically, the controller is also electrically connected to an external negative pressure gas source, and the controller can also adjust the power of the external negative pressure gas source, which is not limited here.

[0057] When the position detection sensor 42 detects that the filter rod is located outside the placement slot 13, the position detection sensor 42 transmits a signal to the controller, and the controller controls the power of the external positive pressure air source to be reduced to reduce the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet plate 32 by the external positive pressure air source. At the same time, the controller controls the displacement component 5 to work, so that the displacement component 5 acts on the filter rod part outside the placement slot 13 to move the filter rod to the inside of the placement slot 13, and then the position of the filter rod located outside the placement slot 13 is corrected by the displacement component 5, thereby avoiding the filter rod from falling out of the placement slot 13 during the rotation of the drum wheel 1.

[0058] Furthermore, the distance between the position detection sensor 42 and the fixing plate 2 is equal to the distance between the second end of the limiting plate 11 and the fixing plate 2 .

[0059] In one embodiment of the filter rod positioning device of the present invention, the detection component 4 also includes a distance detection sensor (not shown in the figure), which is arranged on the brake air outlet plate 32, and is used to detect the distance between the filter rod and the distance detection sensor.

[0060] When the distance detection sensor detects that the distance between the filter rod and the distance detection sensor is greater than the preset distance range, the distance detection sensor transmits a signal to the controller, and the controller controls the power of the external positive pressure air source to be reduced to reduce the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet plate 32 by the external positive pressure air source, thereby reducing the distance between the filter rod and the distance detection sensor, so that the distance between the filter rod and the distance detection sensor is within the preset distance range.

[0061] When the distance detection sensor detects that the distance between the filter rod and the distance detection sensor is less than the preset distance range, that is, the pressure of the positive pressure air duct 31 introduced into the placement slot 13 by the brake air outlet plate 32 is low, and the end of the filter rod is close to the retaining ring 12, at this time, the distance detection sensor transmits a signal to the controller, and the controller controls the power of the external positive pressure air source to increase, so as to increase the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet plate 32 by the external positive pressure air source, thereby increasing the distance between the filter rod and the distance detection sensor, so that the distance between the filter rod and the distance detection sensor is within the preset distance range, which can make the filter rod be placed in the placement slot 13, and avoid the problem of damage to the filter rod caused by collision between the filter rod and the retaining ring 12.

[0062] In one embodiment of the filter rod drop positioning device of the present invention, as Figures 1 to 3 As shown, in order to remind the operator, the detection component 4 also includes an alarm 43, and the alarm 43 is electrically connected to the controller. The alarm 43 is used to issue a sound alarm and / or display an alarm.

[0063] Specifically, the display alarm issued by the alarm 43 can be a flashing, permanently lit red light, yellow light, etc., which is not limited here.

[0064] In one embodiment of the filter rod drop positioning device of the present invention, as Figure 2 and Figure 3 As shown, the displacement assembly 5 also includes a driving cylinder 51, a pushing plate 52 and a connecting rod 53. The driving cylinder 51 is arranged on the fixed plate 2. The first end of the connecting rod 53 is connected to the output end of the driving cylinder 51. The second end of the connecting rod 53 passes through the fixed plate 2 and is connected to the pushing plate 52. The pushing plate 52 is located between the fixed plate 2 and the drum wheel 1, and the driving cylinder 51 is electrically connected to the controller.

[0065] Specifically, when the position detection sensor 42 detects that the filter rod is located outside the placement slot 13, the position detection sensor 42 transmits a signal to the controller, and the controller controls the power of the external positive pressure gas source to be reduced to reduce the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet plate 32 by the external positive pressure gas source. At the same time, the controller controls the driving cylinder 51 to work, and the driving cylinder 51 drives the connecting rod 53 to move, and the movement of the connecting rod 53 drives the push plate 52 to move, so that the push plate 52 acts on the filter rod located outside the placement slot 13 to push the filter rod into the placement slot 13. Since the closer the filter rod is to the retaining ring 12 in the placement slot 13, the greater the suction force it receives, therefore, when the filter rod is completely in the placement slot 13, it can be driven by the suction provided by the suction guide plate 34 to abut against the retaining ring 12, thereby repairing the position of the filter rod and ensuring product quality.

[0066] It should be noted that the driving cylinder 51 can also be set between the fixed plate 2 and the drum 1, and set on the fixed plate 2, then the first end of the connecting rod 53 is connected to the output end of the driving cylinder 51, and the second end of the connecting rod 53 is connected to the pushing plate 52.

[0067] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A filter rod blanking positioning device, characterized in that: include: Drum, fixing plate, adjustment assembly, detection assembly and displacement assembly; The first end of the drum wheel is rotatably arranged on the fixed plate, and the drum wheel is provided with a plurality of limit plates and retaining rings, the limit plates are evenly spaced and arranged on the outer peripheral wall of the drum wheel, the retaining ring is sleeved on the drum wheel, and the retaining ring is connected to the first end of the limit plate, and two adjacent limit plates and the retaining ring form a placement groove, and the placement groove is used to place the filter rod; The adjustment assembly includes a positive pressure air duct and a brake air outlet plate, wherein the first end of the positive pressure air duct passes through the fixing plate and is connected to an external positive pressure air source, the first end of the brake air outlet plate is connected to the second end of the positive pressure air duct, the second end of the brake air outlet plate is arranged toward the placement slot, and the brake air outlet plate is located at the second end of the drum wheel; The detection component is used to detect the position of the filter rod; the displacement component is used to move the filter rod so that the filter rod is located in the placement groove.

2. The filter rod dropping and positioning device according to claim 1, characterized in that: A first air guide hole is arranged in the brake air outlet plate, and a first end of the first air guide hole is communicated with the positive pressure air duct.

3. The filter rod dropping and positioning device according to claim 2, characterized in that: The retaining ring is provided with a plurality of through holes, and the plurality of through holes are evenly spaced. The second end of the brake air outlet plate is arranged close to the retaining ring, and the second end of the first air guide hole is in conduction with the through holes.

4. The filter rod dropping and positioning device according to claim 3, characterized in that: The adjustment component also includes a negative pressure air duct and an air suction guide plate, the first end of the negative pressure air duct passes through the fixed plate and is connected to an external negative pressure air source, the first end of the air suction guide plate is connected to the second end of the negative pressure air duct, the second end of the air suction guide plate is arranged close to the retaining ring, and the air suction guide plate is located downstream of the brake air outlet plate and at the second end of the drum wheel.

5. The filter rod drop positioning device according to claim 4, characterized in that: A second air guide hole is provided in the air intake guide plate, a first end of the second air guide hole is communicated with the negative pressure air duct, and a second end of the second air guide hole is communicated with the through hole.

6. The filter rod drop positioning device according to claim 1, characterized in that: The second end of the drum is also provided with a fixing ring, and a mounting groove is formed between the fixing ring and the retaining ring; The second end of the brake air outlet plate and the second end of the air intake guide plate are respectively provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion are respectively located inside the mounting groove, and the top of the second end of the brake air outlet plate and the top of the second end of the air intake guide plate are both slidably connected to the fixing ring.

7. The filter rod dropping and positioning device according to any one of claims 1 to 6, characterized in that: The detection assembly includes a mounting plate, a controller and a position detection sensor, wherein the mounting plate is vertically connected to the fixing plate and is located above the drum wheel, and the position detection sensor is arranged on the mounting plate, and the position detection sensor is used to detect whether the filter rod is located outside the placement groove; The controller is electrically connected to the position detection sensor, the external positive pressure air source and the displacement component, and the controller is used to regulate the flow rate of the external positive pressure air source outputting the positive pressure air duct.

8. The filter rod drop positioning device according to claim 7, characterized in that: The distance between the position detection sensor and the fixing plate is equal to the distance between the second end of the limiting plate and the fixing plate.

9. The filter rod dropping and positioning device according to claim 7, characterized in that: The detection component also includes an alarm, which is electrically connected to the controller and is used to emit an audible alarm and / or display an alarm.

10. The filter rod dropping and positioning device according to claim 7, characterized in that: The displacement assembly includes a driving cylinder, a pushing plate and a connecting rod. The driving cylinder is arranged on the fixed plate. The first end of the connecting rod is connected to the output end of the driving cylinder. The second end of the connecting rod passes through the fixed plate and is connected to the pushing plate. The pushing plate is located between the fixed plate and the drum wheel, and the driving cylinder is electrically connected to the controller.

Images