Filter stick blanking positioning device

Abstract

The utility model 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] This utility model relates to the field of cigarette machinery and equipment technology, and more specifically, to a filter rod feeding and positioning device. Background Technology

[0002] Filter rods are round rods of a certain length that are rolled up from raw materials such as cellulose acetate tow and polypropylene tow. In the existing equipment in this industry, the filter rods are basically fed into the groove of the drum by falling freely, and the filter rods are adsorbed into the groove by negative pressure air.

[0003] However, the negative pressure air in the groove of the drum is usually 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. Excessive dust adsorbed in the air duct will cause the air duct to be blocked, and the negative pressure in the groove of the drum will gradually decrease. The braking effect of the filter rod will also weaken, which will easily cause the filter rod to collide with the retaining ring of the drum, resulting in a quality accident of the filter rod contact.

[0004] Therefore, how to provide a filter rod feeding and positioning device has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a filter rod feeding and positioning device.

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

[0007] The first end of the drum is rotatably mounted on the fixed plate. The drum has multiple limiting plates and retaining rings. The limiting plates are evenly spaced on the outer peripheral wall of the drum. The retaining rings are sleeved on the drum and connected to the first end of the limiting plates. Two adjacent limiting plates and the retaining rings form a placement groove for placing filter rods.

[0008] The adjustment assembly includes a positive pressure air duct and a brake air outlet plate. The first end of the positive pressure air duct passes through the fixed 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 positioned towards the placement slot and is located at the second end of the drum.

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

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

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

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

[0014] Optionally, the second end of the drum is further provided with a retaining ring, and the retaining ring and the retaining ring form an installation groove;

[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 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 perpendicularly connected to the fixing plate and is located above the drum. The position detection sensor is disposed on the mounting plate and is used to detect whether the filter rod is located outside the placement slot.

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

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

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

[0020] Optionally, the displacement assembly further includes a drive cylinder, a push plate, and a connecting rod. The drive cylinder is disposed on the fixed plate. The first end of the connecting rod is connected to the output end of the drive cylinder. The second end of the connecting rod passes through the fixed plate and is connected to the push plate. The push plate is located between the fixed plate and the drum. The drive cylinder is electrically connected to the controller.

[0021] The beneficial effects of this utility model are as follows:

[0022] This invention features evenly spaced limiting plates on the outer peripheral wall of a drum, with retaining rings fitted onto the drum and connected to the first end of the limiting plates. Adjacent limiting plates and retaining rings form a placement groove. The first end of a positive pressure duct passes through a fixing plate and connects to an external positive pressure air source. The first end of a brake air outlet plate connects to the second end of the positive pressure duct, with the second end facing the placement groove and 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 duct and brake air outlet plate. As the filter rod enters the placement groove, the positive pressure gas acts on it, slowing it down to prevent collision with the retaining ring. Simultaneously, a detection component monitors the filter rod's position and uses a control and displacement component to correct it, ensuring the filter rod remains stably positioned within the placement groove. This avoids blockage of the negative pressure duct, improves space utilization, saves energy, and strictly guarantees product quality.

[0023] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

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

[0025] Figure 1 This is a structural diagram of the filter rod feeding and positioning device of this utility model;

[0026] Figure 2 This is a structural diagram of the detection component of this utility model;

[0027] Figure 3 This is a structural diagram of the displacement component of this utility model.

[0028] The diagram shows the following components: 1. Drum; 11. Limiting plate; 12. Retaining ring; 13. Placement slot; 14. Through hole; 15. Fixing ring; 16. Mounting slot; 2. Fixing plate; 3. Adjustment assembly; 31. Positive pressure air duct; 32. Braking air outlet plate; 33. Negative pressure air duct; 34. Suction 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 Implementation

[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, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

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

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

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

[0033] like Figures 1 to 3 As shown in the figure, this utility model embodiment provides a filter rod dropping and positioning device, including: a drum 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 1 is rotatably mounted on the fixed plate 2. The drum 1 has multiple limiting plates 11 and retaining rings 12. The limiting plates 11 are evenly spaced on the outer peripheral wall of the drum 1. The retaining rings 12 are sleeved on the drum 1 and connected to the first end of the limiting plates 11. Two adjacent limiting plates 11 and retaining rings 12 form a placement groove 13, which is used to place filter rods.

[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 fixing 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 set towards the placement groove 13 and is located at the second end of the drum 1.

[0037] Specifically, an external positive pressure air source introduces positive pressure gas into the positive pressure air duct 31. The positive pressure gas is then introduced into the brake air outlet plate 32 through the positive pressure air duct 31, and then into the placement groove 13 to decelerate the filter rod, so that the filter rod stops in the placement groove 13 and does not collide 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 it is located in the placement groove 13.

[0039] Specifically, when the detection component 4 detects that the filter rod is outside the placement groove 13, the detection component 4 controls the displacement component 5 to work. The displacement component 5 acts on the filter rod, thereby moving the filter rod into the placement groove 13.

[0040] During operation, an external positive pressure air source introduces positive pressure gas into the placement tank 13 through the positive pressure air duct 31 and the brake air outlet plate 32. As the filter rod enters the placement tank 13, the positive pressure gas acts on the filter rod, causing it to slow down and preventing it from colliding with the retaining ring 12. At the same time, the detection component 4 detects the position of the filter rod and corrects its position through the control component and the displacement component 5, so that the filter rod is stably placed in the placement tank 13.

[0041] This utility model involves evenly spaced limiting plates 11 on the outer peripheral wall of the drum 1, with retaining rings 12 fitted onto the drum 1 and connected to the first end of the limiting plates 11. Two adjacent limiting plates 11 and retaining rings 12 form a placement groove 13. The first end of the positive pressure air pipe 31 passes through the fixing 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 pipe 31. The second end of the brake air outlet plate 32 faces the placement groove 13 and 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. As the filter rod enters the placement slot 13, the positive pressure gas acts on the filter rod, causing it to slow down and preventing it from colliding with the retaining ring 12. At the same time, the detection component 4 detects the position of the filter rod and corrects its position through the control component and the displacement component 5, so that the filter rod is stably placed in the placement slot 13. This avoids the problem of negative pressure air duct blockage, improves space utilization, saves energy, and strictly ensures product quality.

[0042] In one embodiment of the filter rod feeding and positioning device of this utility model, a first air guide hole is provided in the brake air outlet plate 32. The first end of the first air guide hole is connected to the positive pressure air pipe 31. The first air guide hole passes through both ends of the brake air outlet plate 32 so that the positive pressure gas inside the positive pressure air pipe 31 can be smoothly introduced into the brake air outlet plate 32, thereby allowing the positive pressure gas discharged from the brake air outlet plate 32 to act on the filter rod in the placement groove 13, so that the filter rod slows down and stays in the placement groove 13.

[0043] In one embodiment of the filter rod feeding and positioning device of this utility model, such as Figure 1 As shown, the retaining ring 12 is provided with multiple through holes 14, which are evenly spaced. The second end of the brake air outlet plate 32 is located close to the retaining ring 12, and the second end of the first air guide hole is connected to the through hole 14.

[0044] Specifically, multiple through holes 14 are connected to multiple placement slots 13 respectively. When the drum 1 is rotating, the multiple through holes 14 are connected to the first air guide hole of the brake air outlet plate 32 in sequence, thereby allowing positive pressure gas to be blown into the placement slot 13.

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

[0046] Specifically, during operation, the external negative pressure air source is in the 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 intake guide plate 34 are in a negative pressure state, thereby causing the air intake guide plate 34 to draw air into the placement groove 13, which in turn acts on the filter rod inside the placement groove 13, so that the filter rod slowly moves toward the baffle ring 12 until it comes into contact with the baffle ring 12.

[0047] This utility model connects the first end of the negative pressure air duct 33 through the fixed plate 2 to the external negative pressure air source, and the first end of the suction guide plate 34 is connected to the second end of the negative pressure air duct 33. The second end of the suction guide plate 34 is located close to the retaining ring 12. The suction guide plate 34 is located downstream of the brake air outlet plate 32. Under the action of the negative pressure air duct 33 and the suction guide plate 34, the filter rods inside the multiple placement slots 13 on the drum 1 can all abut against the retaining ring 12 to achieve the function of aligning the filter rods.

[0048] In one embodiment of the filter rod feeding and positioning device of this utility model, a second air guide hole is provided in the air suction guide plate 34. The first end of the second air guide hole is connected to the negative pressure air pipe 33, and the second end of the second air guide hole is connected to the through hole 14.

[0049] This invention connects the first end of the second air guide hole to the negative pressure air duct 33 and the second end of the second air guide hole to the through hole 14, thereby ensuring that the air intake guide plate 34 can draw 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 that the filter rod can be slowly moved to contact the retaining ring 12.

[0050] In one embodiment of the filter rod feeding and positioning device of this utility model, such as Figure 1 As shown, the second end of the drum 1 is also provided with a fixing ring 15, 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 intake guide plate 34 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 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 intake guide plate 34 are 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 gap with the top of the fixing ring 15; or, a snap-fit ​​groove may be provided at the second end of the brake air outlet plate 32 and the second end of the air intake guide plate 34 respectively, so that the snap-fit ​​groove snaps with the fixing ring 15. The above description is actually only illustrative and is by no means intended to limit the present utility model and its application or use.

[0053] This invention provides support for the brake air outlet plate 32 and the air intake guide plate 34 by placing the first protrusion and the second protrusion inside the mounting groove 16, and by slidingly connecting 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 to the fixing ring 15, thereby improving the safety and stability of the filter rod dropping and positioning device of this invention during use.

[0054] In one embodiment of the filter rod feeding and positioning device of this utility model, such 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 fixing plate 2 and is located above the drum 1. The position detection sensor 42 is mounted on the mounting plate 41 and 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 component 5. The controller is used to regulate the flow rate inside the positive pressure air duct 31 output by the external positive pressure air source.

[0056] Specifically, the controller is also electrically connected to an external negative pressure air source, and the controller can also adjust the power of the external negative pressure air source, without limitation.

[0057] When the position detection sensor 42 detects that the filter rod is outside the placement slot 13, the position detection sensor 42 transmits a signal to the controller. The controller controls the power of the external positive pressure air source to reduce the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet 32. 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, so that the filter rod moves into the interior of the placement slot 13. In this way, the position of the filter rod located outside the placement slot 13 is corrected by the displacement component 5, so as to avoid the filter rod falling out of the placement slot 13 during the rotation of the drum 1.

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

[0059] In one embodiment of the filter rod feeding and positioning device of this utility model, the detection component 4 further includes a distance detection sensor (not shown in the figure). The distance detection sensor is disposed 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. The controller controls the power of the external positive pressure air source to reduce the pressure of the positive pressure gas introduced into the positive pressure air duct 31 and the brake air outlet 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 pipe 31 introduced into the placement groove 13 by the brake air outlet 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. The controller controls the power of the external positive pressure air source to increase the pressure of the positive pressure gas introduced into the positive pressure air pipe 31 and the brake air outlet 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, so that the filter rod is placed in the placement groove 13, avoiding the problem of the filter rod being damaged due to collision with the retaining ring 12.

[0062] In one embodiment of the filter rod feeding and positioning device of this utility model, such as Figures 1 to 3 As shown, in order to alert the operator, the detection component 4 also includes an alarm 43, which is electrically connected to the controller and is used to issue an audible alarm and / or display an alarm.

[0063] Specifically, the alarm signal emitted by the alarm 43 can be a flashing, constantly lit red light, a yellow light, etc., and there are no restrictions on this.

[0064] In one embodiment of the filter rod feeding and positioning device of this utility model, such as Figure 2 and Figure 3 As shown, the displacement assembly 5 also includes a drive cylinder 51, a push plate 52, and a connecting rod 53. The drive cylinder 51 is mounted on the fixed plate 2. The first end of the connecting rod 53 is connected to the output end of the drive cylinder 51, and the second end of the connecting rod 53 passes through the fixed plate 2 and is connected to the push plate 52. The push plate 52 is located between the fixed plate 2 and the drum 1, and the drive cylinder 51 is electrically connected to the controller.

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

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

[0067] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments 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 blank positioning device, characterised in that, The utility model relates to a filter rod placing device, including: Drum wheel, fixed plate, adjustment assembly, detection assembly and displacement assembly; The first end of drum wheel is rotationally arranged on the fixed plate, a plurality of limiting plates and a retaining ring are arranged on the drum wheel, the limiting plates are uniformly and spacedly arranged on the outer peripheral wall of the drum wheel, the retaining ring is sleeved on the drum wheel, the first end of the retaining ring is connected with the limiting plate, two adjacent limiting plates and the retaining ring form a placing groove, and the placing groove is used for placing a filter rod; The adjustment assembly comprises a positive pressure air pipe and a brake air outlet plate, the first end of the positive pressure air pipe penetrates through the fixed plate and is communicated with an external positive pressure air source, the first end of the brake air outlet plate is communicated with the second end of the positive pressure air pipe, the second end of the brake air outlet plate is arranged towards the placing groove, and the brake 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 rod, and the displacement assembly is used for moving the filter rod so that the filter rod is located in the placing groove.

2. A rod setting device according to claim 1, wherein The first air guide hole is arranged in the brake air outlet plate, and the first end of the first air guide hole is communicated with the positive pressure air pipe.

3. A rod setting device according to claim 2, wherein A plurality of through holes are arranged on the retaining ring, the through holes are uniformly and spacedly arranged, 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 communicated with the through holes.

4. A rod setting device according to claim 3, wherein The adjustment assembly further comprises a negative pressure air pipe and an air suction guide plate, the first end of the negative pressure air pipe penetrates through the fixed plate and is communicated with an external negative pressure air source, the first end of the air suction guide plate is communicated with the second end of the negative pressure air pipe, the second end of the air suction guide plate is arranged close to the retaining ring, the air suction guide plate is located downstream of the brake air outlet plate and at the second end of the drum wheel.

5. A filter rod blank positioning device according to claim 4, characterised in that A second air guide hole is arranged in the air suction guide plate, the first end of the second air guide hole is communicated with the negative pressure air pipe, and the second end of the second air guide hole is communicated with the through holes.

6. A rod setting device according to claim 1, wherein The second end of the drum wheel is further provided with a fixing ring, and an installation 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 suction guide plate are respectively provided with a first convex body and a second convex body, the first convex body and the second convex body are respectively located in the installation groove, and the top of the second end of the brake air outlet plate and the top of the second end of the air suction guide plate are both in sliding connection with the fixing ring.

7. A rod setting device according to any one of claims 1 to 6, wherein The detection assembly comprises a mounting plate, a controller and a position detection sensor, the mounting plate is perpendicularly connected with the fixed plate, 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 for detecting whether the filter rod is located outside the placing groove. The controller is electrically connected with the position detection sensor, the external positive pressure air source and the displacement assembly, and the controller is used for regulating and controlling the flow output by the external positive pressure air source to the inside of the positive pressure air pipe.

8. A rod setting device according to claim 7, wherein The distance between the position detection sensor and the fixed plate is equal to the distance between the second end of the limiting plate and the fixed plate.

9. A rod setting device according to claim 7, wherein The detection assembly further comprises an alarm, the alarm is electrically connected with the controller, and the alarm is used for issuing a sound alarm and / or displaying an alarm.

10. A rod setting device according to claim 7, wherein The displacement assembly comprises 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 with the output end of the driving cylinder, the second end of the connecting rod penetrates through the fixed plate and is connected with the pushing plate, the pushing plate is located between the fixed plate and the drum, and the driving cylinder is electrically connected with the controller.

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