Material level detection mechanism and material level control device of filter stick emission material warehouse

Abstract

The utility model relates to the technical field of tobacco equipment, and discloses a material level detection mechanism and a material level control device of a filter stick emission material warehouse, which comprise a swing rod assembly and a distance sensor, the swing rod assembly comprises a swing rod and a detection rod, and the swing rod and the distance sensor are arranged in the material warehouse close to the upper end of the material warehouse. The swing rod is provided with a first end and a second end along the length direction, the swing rod is rotatably connected with the material warehouse adjacent to the first end, the second end of the swing rod is connected with the detection rod, the first end of the swing rod is an arc-shaped surface, the distance sensor and the swing rod are arranged at an interval and directly face the arc-shaped surface, and the distance sensor is used for detecting the distance between the distance sensor and the arc-shaped surface; when the material level is increased, the swing rod assembly rotates in the first direction, and the distance value detected by the distance sensor is gradually decreased. When the material level is reduced, the swing rod assembly rotates in the second direction, the distance value detected by the distance sensor is gradually increased, and the first direction is opposite to the second direction. According to the utility model, the material level of the material warehouse can be accurately detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco production equipment technical field especially, relate to a filter stick launch storehouse's material position detection mechanism and material position control device. BACKGROUND

[0002] In the cigarette production process, the filter stick launcher is the last equipment in the filter stick forming workshop production process. It sends the filter stick of the forming workshop to the filter stick storehouse of the cigarette making machine in the cigarette wrapping and packing workshop through air power. Filter stick launching is an important link of cigarette production process, and the launching process quality directly affects the downstream cigarette quality.

[0003] The existing material position detection module includes a filter stick conveying belt, a swing lever rotatably arranged, a material position sensor, and a controller connected with the material position sensor and a driving motor of the filter stick conveying belt. The material position sensor includes an upper switch type inductive sensor and a lower switch type inductive sensor which are staggered in the vertical direction and the horizontal direction, respectively. When both the upper switch type inductive sensor and the lower switch type inductive sensor have no signal, the controller determines that the material storehouse has low material level, and controls the driving motor to drive the filter stick conveying belt to run at a speed V1. When the lower switch type inductive sensor has a signal and the upper switch type inductive sensor has no signal, the controller determines that the material storehouse has medium material level, and controls the driving motor to drive the filter stick conveying belt to run at a speed V2. When the upper switch type inductive sensor has a signal, the controller determines that the material storehouse has high material level, and controls the driving motor to stop running. Wherein, V1>V2.

[0004] The existing launcher can only roughly determine the material level of the filter stick storehouse according to the material position detection module, and the driving strategy of the filter stick conveying belt lacks accuracy and flexibility, and the filter stick conveying belt starts and stops frequently, which may cause the filter stick conveying belt to be stuck. UTILITY MODEL CONTENTS

[0005] One of the purposes of the utility model embodiment is to provide a material position detection mechanism of a filter stick launch storehouse, which can accurately detect the material level of the storehouse.

[0006] The second purpose of the utility model embodiment is to provide a material position control device of a filter stick launch storehouse, which can adjust the feeding speed of the filter stick conveying mechanism in real time according to the material level, so as to control the material level of the storehouse within a proper range.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In one aspect, the utility model provides a kind of material level detection mechanism of filter rod launch storehouse, including swing bar assembly and distance sensor, the swing bar assembly includes swing bar and detection rod, the swing bar and the distance sensor are adjacent the upper end of the storehouse and are installed in the storehouse, the swing bar has first end and second end along its length direction, the swing bar is adjacent its first end and is rotatably connected with the storehouse, the second end of the swing bar is connected with the detection rod, the first end of the swing bar is arc surface, the distance sensor is spaced apart from the swing bar and is directly opposite the arc surface, the distance sensor is used to detect the distance between it and the arc surface;

[0009] When material level increases, the swing bar assembly rotates along first direction, the distance value detected by the distance sensor gradually decreases;When material level decreases, the swing bar assembly rotates along second direction, the distance value detected by the distance sensor gradually increases, the first direction is opposite to the second direction.

[0010] As a further scheme of the material level detection mechanism of filter rod launch storehouse, the distance sensor is linear inductance sensor, when the swing bar assembly rotates, the distance value detected by the linear inductance sensor changes linearly with the angle of the swing bar.

[0011] As a further scheme of the material level detection mechanism of filter rod launch storehouse, taking the rotation axis of the swing bar as the center, when the swing bar is in horizontal state, the radius of the arc surface gradually decreases from top to bottom.

[0012] As a further scheme of the material level detection mechanism of filter rod launch storehouse, the rotation angle of the swing bar is-60°~30°;Wherein, when the swing bar is in horizontal state, the angle of the swing bar is 0°, when the second end of the swing bar is above the horizontal position, the rotation angle of the swing bar is positive value;When the second end of the swing bar is below the horizontal position, the rotation angle of the swing bar is negative value;When the rotation angle of the swing bar is-60°, the arc surface is farthest from the distance sensor, when the rotation angle of the swing bar is 30°, the arc surface is closest to the distance sensor.

[0013] As a further scheme of the material level detection mechanism of filter rod launch storehouse, the material level detection mechanism further includes positioning shaft and locking part, the swing bar is provided with shaft hole adjacent the first end, the thickness of the swing bar extends along X direction, the shaft hole penetrates the swing bar along the X direction, the positioning shaft is installed in the storehouse and is rotatably connected with the shaft hole, the length of the positioning shaft extends along the X direction, the locking part is arranged at the end of the positioning shaft.

[0014] As a further scheme of the material position detection mechanism of the filter rod launching magazine, the locking part comprises a gasket and a snap spring, the outer periphery of the shaft body is annularly provided with a clamping groove, the clamping groove is adjacent to one end of the shaft body away from the connecting part, the snap spring is in clamping cooperation with the clamping groove, the gasket is sleeved on the outer periphery of the shaft body and located between the snap spring and the swing rod, and the swing rod is adjacent to the connecting part and the gasket on two sides along the Y direction.

[0015] As a further scheme of the material position detection mechanism of the filter rod launching magazine, the locking part comprises a gasket and a snap spring, the outer periphery of the shaft body is annularly provided with a clamping groove, the clamping groove is adjacent to one end of the shaft body away from the connecting part, the snap spring is in clamping cooperation with the clamping groove, the gasket is sleeved on the outer periphery of the shaft body and located between the snap spring and the swing rod, and the swing rod is adjacent to the connecting part and the gasket on two sides along the Y direction.

[0016] As a further scheme of the material position detection mechanism of the filter rod launching magazine, the lower end of the swing rod is provided with an avoiding groove, and the avoiding groove penetrates through the swing rod along the X direction.

[0017] In another aspect, the utility model provides a kind of material position control device of filter rod launching magazine, including magazine, controller, filter rod conveying mechanism and the material position detection mechanism of the filter rod launching magazine of the described, the filter rod conveying mechanism extends to the magazine, for conveying filter rod to the magazine, and the bottom of the magazine is equipped with filter rod launching port;The filter rod conveying mechanism includes motor and conveying belt, and the discharge end of the conveying belt extends to the magazine, and the output end of the motor is drivingly connected with the conveying belt, and the controller is connected with the motor and the distance sensor, for according to material position control the rotation speed of the motor, so that the rotation speed of the motor increases with the distance value detected by the distance sensor increases.

[0018] As a further scheme of the material position control device of the filter rod launching magazine, the filter rod conveying mechanism further includes a frequency converter, and the frequency converter is connected with the motor and the controller.

[0019] The utility model has the advantages that:

[0020] The material level detection mechanism of the filter rod launching material warehouse comprises a material warehouse, a distance sensor and a swing rod assembly.

[0021] The controller can continuously and flexibly adjust the conveying speed of the filter rod conveying mechanism in real time according to the distance value detected by the distance sensor, so that the normal launching of the filter rod launcher is not affected by the insufficient filter rods in the material warehouse, and the filter rod conveying mechanism is not frequently started and stopped due to the excessive filter rods in the material warehouse, thereby avoiding the failure of the filter rod conveying mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further explained in detail according to the drawings and examples.

[0023] Figure 1 The structure diagram of the material level detection mechanism of the filter rod launching material warehouse is shown in the drawings.

[0024] Figure 2 The exploded view of the material level detection mechanism of the filter rod launching material warehouse is shown in the drawings.

[0025] Figure 3 The state diagram of the swing rod and the distance sensor is shown in the drawings. Figure 1

[0026] Figure 4 The state diagram of the swing rod and the distance sensor is shown in the drawings. Figure 2

[0027] In the drawings:

[0028] ​​100, swing rod assembly; 110, swing rod; 111, arc surface; 112, shaft hole; 113, avoiding slot; 120, detection rod; 121, straight part; 122, hook part; 200, distance sensor; 300, positioning shaft; 310, connecting part; 320, shaft body; 321, clamping groove; 400, locking part; 410, gasket; 420, clamping spring; 500, mounting frame; 510, first mounting seat; 511, first mounting hole; 520, second mounting seat; 521, second mounting hole; 600, bolt. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the present embodiment, if the terms "upper", "lower", "left", "right" and the like orientation or position relationship appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second" and the like appear, they are only used to distinguish in the description, and have no special meaning.

[0033] As shown in Figure 1 and Figure 2 , the stock level detection mechanism of the filter rod launching stock of the present embodiment is installed in the stock, and the stock level detection mechanism of the filter rod launching stock comprises a swing rod assembly 100 and a distance sensor 200, the swing rod assembly 100 comprises a swing rod 110 and a detection rod 120, the swing rod 110 and the distance sensor 200 are installed in the stock adjacent to the upper end of the stock, the swing rod 110 has a first end and a second end along the length direction thereof, the swing rod 110 is rotationally connected to the stock adjacent to the first end thereof, the second end of the swing rod 110 is connected to the detection rod 120, the first end of the swing rod 110 is an arc surface 111, the distance sensor 200 is arranged in a spaced manner with the swing rod 110 and faces the arc surface 111, and the distance sensor 200 is used to detect the distance between the distance sensor 200 and the arc surface 111;

[0034] When the stock level increases, the swing rod assembly 100 rotates in a first direction, and the distance value detected by the distance sensor 200 gradually decreases; when the stock level decreases, the swing rod assembly 100 rotates in a second direction, and the distance value detected by the distance sensor 200 gradually increases, and the first direction is opposite to the second direction.

[0035] It can be understood that when the stock level in the stock changes, the swing rod assembly 100 will be swung up and down about the rotation axis thereof. In the present embodiment, the first end of the swing rod 110 is designed as the arc surface 111, and the distance sensor 200 is arranged in the stock to face the arc surface 111, when the stock level changes, the swing rod assembly 100 will rotate, and the distance between the distance sensor 200 and the arc surface detected by the distance sensor 200 will change accordingly. Specifically, when the stock level increases, the swing rod assembly 100 rotates in a first direction (the first direction is the clockwise direction shown in Figure 1 ), and the distance value detected by the distance sensor 200 gradually decreases; when the stock level decreases, the swing rod assembly 100 rotates in a second direction (the second direction is the counterclockwise direction shown in Figure 1 ), and the distance value detected by the distance sensor 200 gradually increases.

[0036] In the embodiment, when the material level in the stockyard is below a lower level, the swing lever 110 is first in a state of counterclockwise rotation to the maximum angle, during which the distance value detected by the distance sensor 200 remains unchanged, and the specific material level detection below the lower level is meaningless; when the material level is higher than the lower level, the rotation angle of the swing lever 110 and the distance value detected by the distance sensor 200 will change. Therefore, the accurate detection of the material level of the stockyard in the embodiment refers to the accurate detection of the material level above the lower level, rather than the detection of the material level of the full height from the lower end to the upper end of the stockyard.

[0037] Further, the distance sensor 200 is a linear inductance sensor, and when the swing lever assembly 100 rotates, the distance value detected by the linear inductance sensor changes linearly with the angle of the swing lever 110.

[0038] In the embodiment, by designing the detection distance value of the linear inductance sensor and the rotation angle of the swing lever 110 to change linearly, the material level in the stockyard can be more accurately and continuously detected.

[0039] The structure of the linear inductance sensor is a conventional technical means in the art, and will not be described in detail.

[0040] Further, with the rotation axis of the swing lever 110 as the center, when the swing lever 110 is in a horizontal state, the arc surface 111 gradually decreases in circular arc radius from top to bottom.

[0041] If the arc surface 111 of the first end of the swing lever 110 is a circular arc surface with a fixed radius, the distance between the circular arc surface and the distance sensor 200 is fixed and unchanged when the swing lever 110 rotates. In the embodiment, the center of the swing lever 110 is taken as the center, and the arc surface 111 is designed as a circular arc surface with a circular arc radius gradually decreasing from top to bottom, so that the rotation angle of the swing lever 110 and the distance value detected by the distance sensor 200 change linearly.

[0042] For example, eight auxiliary radius lines are used to divide one part of the arc surface 111 into seven parts, each with a central angle of 15°. When the swing lever 110 is in a horizontal state, there are two parts above the horizontal line and five parts below the horizontal line. The circular arc radius of the uppermost auxiliary radius line is 26.8 mm, and the circular arc radius of the lowermost auxiliary radius line is 23.3 mm. The circular arc radii of the eight auxiliary radius lines decrease by 0.5 mm in equal difference, so that the rotation angle of the swing lever 110 and the distance value detected by the distance sensor 200 change linearly.

[0043] In the embodiment, the rotation angle of the swing lever 110 is -60°-30°; wherein, the angle of the swing lever 110 is 0° when the swing lever 110 is in a horizontal state, the rotation angle of the swing lever 110 is positive when the second end of the swing lever 110 is above the horizontal position, and the rotation angle of the swing lever 110 is negative when the second end of the swing lever 110 is below the horizontal position; as shown in FIG. 1B, when the rotation angle of the swing lever 110 is 30°, the arc surface 111 is closest to the distance sensor 200; as shown in FIG. 1C, when the rotation angle of the swing lever 110 is -60°, the arc surface 111 is farthest from the distance sensor 200. Figure 3 Figure 4

[0044] When the rotation angle of the swing lever 110 is -60°, it indicates that the material level of the material bin is very low, the number of filter rods in the material bin is insufficient, and the distance value detected by the distance sensor 200 is the largest. When the rotation angle of the swing lever 110 is 30°, it indicates that the material level of the material bin is very high, the number of filter rods in the material bin is excessive, and the distance value detected by the distance sensor 200 is the smallest.

[0045] In the embodiment, the specific distance range value is related to the installation position of the distance sensor 200.

[0046] In a specific embodiment, when the angle of the swing lever 110 is -60°, the distance value detected by the distance sensor 200 is 2mm; when the angle of the swing lever 110 is 30°, the distance value detected by the distance sensor 200 is 5mm, in other words, the distance value detected by the distance sensor 200 is in the range of 2mm-5mm, and according to the two end values, the corresponding linear function y=0.5χ+2 can be obtained. wherein, χ refers to the angle of the swing lever 110, and y refers to the distance value (unit: mm) detected by the distance sensor 200. When the installation position of the distance sensor 200 changes, the corresponding linear function also changes.

[0047] Further, the material level detection mechanism further comprises a positioning shaft 300 and a locking portion 400, the swing lever 110 is adjacent to the first end and is provided with a shaft hole 112, the thickness of the swing lever 110 extends along the X direction, the shaft hole 112 penetrates the swing lever 110 along the X direction, the positioning shaft 300 is installed in the material bin and is rotationally connected with the shaft hole 112, the length of the positioning shaft 300 extends along the X direction, and the locking portion 400 is arranged at the end portion of the positioning shaft 300.

[0048] ​​The positioning shaft 300 is arranged in the stock bin and is rotationally fitted with the shaft hole 112 which is arranged adjacent to the first end of the swing lever 110, so that the swing lever assembly 100 can rotate following the change of the stock level in the stock bin. The positioning shaft 300 is connected with the locking part 400 after passing through the shaft hole 112, and the locking part 400 can prevent the swing lever 110 from moving back and forth along the length direction (X direction) of the positioning shaft 300 and deviating from the detection range of the distance sensor 200.

[0049] Further, the stock level detection mechanism further comprises a mounting frame 500 and bolts 600. The mounting frame 500 comprises a first mounting seat 510 and a second mounting seat 520 which are connected vertically. The first mounting seat 510 extends along the Y direction, and the first mounting seat 510 is provided with a first mounting hole 511 along the Y direction. The second mounting seat 520 is provided with a second mounting hole 521 along the X direction, and the second mounting seat 520 extends along the X direction. The X direction is perpendicular to the Y direction. The positioning shaft 300 comprises a connecting part 310 and a shaft body 320. One end of the connecting part 310 along the Y direction is fixedly connected with the shaft body 320. The other end of the connecting part 310 along the Y direction is provided with a threaded hole. The bolts 600 are screwed with the threaded hole through the side wall of the stock bin and the first mounting hole 511. The distance sensor 200 is mounted at the second mounting hole 521.

[0050] The shaft body 320 fixedly connected with one end of the connecting part 310 is connected with the locking part 400 after passing through the shaft hole 112 on the swing lever 110. The other end of the connecting part 310 is screwed with the bolts 600 which pass through the side wall of the stock bin and the first mounting hole 511, so as to realize the installation of the swing lever 110. The distance sensor 200 is directly arranged in the second mounting hole 521 and faces the arc-shaped surface 111 of the swing lever 110. In this embodiment, the mounting frame 500 is designed as an L-shaped structure, so as to fix the positioning shaft 300 and the distance sensor 200 at the same time, and simplify the installation structure.

[0051] In other embodiments, in order to improve the installation stability of the mounting frame 500 in the stock bin, the first mounting seat 510 can be connected with the side wall of the stock bin through at least two bolts 600.

[0052] In addition, when the stock level in the stock bin changes, in order to improve the rotation fluency of the swing lever assembly 100, a bearing can be used as the connecting part 310. The inner hole of the bearing is directly fixedly connected with the shaft body 320, and the outer periphery of the bearing is connected with the bolts 600 through an intermediate connecting structure.

[0053] Further, the locking portion 400 comprises a gasket 410 and a circlip 420, the shaft body 320 is provided with a clamping groove 321 around the outer periphery, the clamping groove 321 is adjacent to the end of the shaft body 320 away from the connecting portion 310, the circlip 420 is in clamping cooperation with the clamping groove 321, and the gasket 410 is sleeved around the outer periphery of the shaft body 320 and located between the circlip 420 and the swing lever 110. The two sides of the swing lever 110 along the Y direction are adjacent to the connecting portion 310 and the gasket 410 respectively.

[0054] It can be understood that after the shaft body 320 of the positioning shaft 300 passes through the shaft hole 112, the end of the shaft body 320 away from the connecting portion 310 extends to the outside of the swing lever 110, the clamping groove 321 is arranged at the position of the shaft body 320 extending to the outside of the swing lever 110, and after the gasket 410 is sleeved on the shaft body 320, the circlip 420 is clamped in the clamping groove 321, so that the gasket 410 is tightly abutted against the side wall of the swing lever 110.

[0055] Exemplarily, a notch is formed in the circumferential side of the circlip 420, and when the circlip 420 is installed, the circlip 420 is inserted into the clamping groove 321 from the circumferential side of the clamping groove 321, so that the installation and disassembly are very convenient.

[0056] Since some supports are arranged in the magazine to support the curtain, the curtain is hung on the filter rod in the magazine by its own gravity, so as to avoid that the filter rods are concentrated below the unloading position of the filter rod conveying mechanism, and part of the supports are located at the lower end of the swing lever 110 to limit the normal rotation of the swing lever 110. Therefore, in the embodiment, an avoiding groove 113 is formed in the lower end of the swing lever 110, and the avoiding groove 113 penetrates the swing lever 110 along the X direction. Part of the supports are located at the avoiding groove 113, so that the swing lever 110 can rotate normally.

[0057] In the embodiment, the detection lever 120 comprises a straight portion 121 and a hook portion 122, one end of the straight portion 121 is connected with the second end along the length direction, the other end is connected with the hook portion 122, and the opening of the hook portion 122 faces the upper end of the magazine. The structure design can make the swing lever assembly 100 sense the change of the material level in the magazine as early as possible.

[0058] The embodiment also provides a material level control device of a filter rod launching magazine, which comprises a magazine, a controller, a filter rod conveying mechanism and the material level detection mechanism of the filter rod launching magazine in any of the above embodiments. The filter rod conveying mechanism extends into the magazine and is used for conveying filter rods into the magazine. The bottom of the magazine is provided with a filter rod launching port. The filter rod conveying mechanism comprises a motor and a conveying belt. The unloading end of the conveying belt extends into the magazine. The output end of the motor is in transmission connection with the conveying belt. The controller is connected with the motor and the distance sensor 200 and is used for controlling the rotation speed of the motor according to the material level, so that the rotation speed of the motor increases with the increase of the distance value detected by the distance sensor 200.

[0059] In the embodiment, since the material level height value corresponds to the angle of the swing lever assembly 100, and the angle of the swing lever assembly 100 corresponds to the distance value detected by the distance sensor 200, the controller can flexibly adjust the conveying speed of the filter rod conveying mechanism in real time according to the size of the distance value detected by the distance sensor 200, so as to control the material level of the magazine within a proper height range, and accurately control the material level within a proper range, avoid the shortage of filter rods in the magazine from affecting the normal launching of the filter rod launcher, and avoid the excessive filter rods in the magazine from causing the filter rod conveying mechanism to be frequently started and stopped, thereby causing the filter rod conveying mechanism to fail. The specific range value of the material level can be determined according to actual conditions, and will not be described in detail.

[0060] In the embodiment, the filter rod conveying mechanism further comprises a frequency converter, and the frequency converter is connected with the motor and the controller. The controller can control the frequency converter to adjust the rotating speed of the driving end of the motor according to the distance value.

[0061] When the rotating angle of the swing lever 110 is -60°, it indicates that the material level of the magazine is very low, and the number of filter rods in the magazine is insufficient. The distance value detected by the distance sensor 200 is the largest, and the controller needs to control the filter rod conveying mechanism to increase the conveying speed to increase the material level. When the rotating angle of the swing lever 110 is 30°, it indicates that the material level of the magazine is very high, and the number of filter rods in the magazine is excessive. The distance value detected by the distance sensor 200 is the smallest, and the controller needs to control the filter rod conveying mechanism to decrease the conveying speed to decrease the material level.

[0062] It should be noted that the structure of the magazine and the structure of the filter rod conveying mechanism are both conventional technical means in the art, and will not be described in detail.

[0063] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A filter rod launching magazine level detection mechanism, characterized by, The material level detection mechanism comprises a swing rod assembly and a distance sensor, the swing rod assembly comprises a swing rod and a detection rod, the swing rod and the distance sensor are installed in the material bin adjacent to the upper end of the material bin, the swing rod has a first end and a second end along the length direction of the swing rod, the swing rod is rotationally connected to the material bin adjacent to the first end of the swing rod, the second end of the swing rod is connected to the detection rod, the first end of the swing rod is an arc surface, the distance sensor is arranged spaced apart from the swing rod and faces the arc surface, and the distance sensor is used to detect the distance between the distance sensor and the arc surface. When the material level increases, the swing rod assembly rotates in a first direction, and the distance value detected by the distance sensor gradually decreases; when the material level decreases, the swing rod assembly rotates in a second direction, and the distance value detected by the distance sensor gradually increases, and the first direction is opposite to the second direction.

2. A material level detection mechanism for a filter rod launching magazine according to claim 1, characterised in that, The distance sensor is a linear inductance sensor, and when the swing rod assembly rotates, the distance value detected by the linear inductance sensor changes linearly with the angle of the swing rod.

3. The material level detecting mechanism of the filter rod emitting magazine according to claim 1, characterized in that, Taking the rotation axis of the swing rod as the center, when the swing rod is in a horizontal state, the radius of the arc surface gradually decreases from top to bottom.

4. The material level detecting mechanism of the filter rod emitting magazine according to claim 1, characterized in that, The rotation angle of the swing rod is -60°-30°; wherein, when the swing rod is in a horizontal state, the angle of the swing rod is 0°, when the second end of the swing rod is above the horizontal position, the rotation angle of the swing rod is positive, when the second end of the swing rod is below the horizontal position, the rotation angle of the swing rod is negative, when the rotation angle of the swing rod is -60°, the arc surface is farthest from the distance sensor, and when the rotation angle of the swing rod is 30°, the arc surface is closest to the distance sensor.

5. The material level detecting mechanism of the filter rod emitting magazine according to claim 1, characterized in that, The material level detection mechanism further comprises a positioning shaft and a locking portion, the swing rod is provided with a shaft hole adjacent to the first end, the thickness of the swing rod extends along the X direction, the shaft hole penetrates through the swing rod along the X direction, the positioning shaft is installed in the material bin and rotationally connected with the shaft hole, the length of the positioning shaft extends along the X direction, and the locking portion is arranged at the end of the positioning shaft.

6. A material level detection mechanism for a filter rod launching magazine according to claim 5, characterised in that, The material level detection mechanism further comprises a mounting bracket and a bolt, the mounting bracket comprises a first mounting seat and a second mounting seat which are connected vertically, the length of the first mounting seat extends along the Y direction, the first mounting seat is provided with a first mounting hole along the Y direction, the second mounting seat is provided with a second mounting hole along the X direction, the length of the second mounting seat extends along the X direction, the X direction is perpendicular to the Y direction, the positioning shaft comprises a connecting portion and a shaft body, one end of the connecting portion along the Y direction is fixedly connected with the shaft body, the other end of the connecting portion along the Y direction is provided with a threaded hole, and the bolt is threadedly screwed through the side wall of the material bin and the first mounting hole and the threaded hole. The material level detection mechanism further comprises a mounting bracket and a bolt, the mounting bracket comprises a first mounting seat and a second mounting seat which are connected vertically, the length of the first mounting seat extends along the Y direction, the first mounting seat is provided with a first mounting hole along the Y direction, the second mounting seat is provided with a second mounting hole along the X direction, the length of the second mounting seat extends along the X direction, the X direction is perpendicular to the Y direction, the positioning shaft comprises a connecting portion and a shaft body, one end of the connecting portion along the Y direction is fixedly connected with the shaft body, the other end of the connecting portion along the Y direction is provided with a threaded hole, and the bolt is threadedly screwed through the side wall of the material bin and the first mounting hole and the threaded hole.

7. A material level detection mechanism for a filter rod launching magazine according to claim 6, characterised in that, The locking part comprises a washer and a snap spring, the outer periphery of the shaft body is provided with a clamping groove, the clamping groove is adjacent to one end of the shaft body away from the connecting part, the snap spring is in clamping fit with the clamping groove, the washer is sleeved on the outer periphery of the shaft body and located between the snap spring and the swing lever, and the swing lever is adjacent to the connecting part and the washer respectively on both sides along the Y direction.

8. The material level detecting mechanism of the filter rod emitting magazine according to any one of claims 1 to 7, characterized in that, The lower end of the swing lever is provided with an avoiding groove, and the avoiding groove penetrates through the swing lever along the X direction.

9. A filter rod magazine for a filter rod launching device, characterized in that The filter rod launching magazine comprises a magazine, a controller, a filter rod conveying mechanism and the filter rod launching magazine level detection mechanism according to any one of claims 1 to 8, the filter rod conveying mechanism extends into the magazine and is used for conveying filter rods into the magazine, the bottom of the magazine is provided with a filter rod launching port; the filter rod conveying mechanism comprises a motor and a conveying belt, the lower end of the conveying belt extends into the magazine, the output end of the motor is in transmission connection with the conveying belt, the controller is connected with the motor and the distance sensor, and is used for controlling the rotation speed of the motor according to the level, so that the rotation speed of the motor increases with the increase of the distance value detected by the distance sensor.

10. A pack control apparatus for a filter rod launching magazine according to claim 9, characterised in that, The filter rod conveying mechanism further comprises a frequency converter, and the frequency converter is connected with the motor and the controller.

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