Device for automatically detecting cigarette density distribution in lead screw pushing mode

Abstract

The utility model discloses a device for automatically detecting cigarette density distribution in a lead screw propelling mode. The device comprises a sample feeding device, a sample pushing device matched with the sample feeding device, a sample detecting device and a sample collecting device, the feeding device comprises a hopper with an inclined sliding face, a lifting plate arranged on one side of the hopper and a slope plate connected with the lifting plate, the slope plate is arranged on the side, away from the hopper, of the lifting plate, and a feeding rail is arranged on the side, away from the feeding hopper, of the slope plate. The feeding track and the detection channel of the sample detection device are coaxial, materials are taken through the lifting plate and fed through the lead screw, cigarettes cannot be extruded, and the situation that tobacco shreds leak out in the conveying process, and detection of density distribution is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco research, in particular to the technical field of an automatic detection device for cigarette density distribution. Background Art

[0002] The cigarette rolling process must ensure that the physical indicators (single cigarette weight, circumference, length, and draw resistance) meet the standard requirements. At the same time, in order to reduce the empty end defects of cigarettes, it is necessary to control the cigarette heads tightly, that is, to ensure a certain amount of tobacco filling in the ignition section of the cigarette. Therefore, the distribution of cigarette density and the relationship between the average density of cigarettes and physical indicators are studied. Through the correlation analysis of cigarette density and physical indicators, the functional relationship between indicators is sought, so as to achieve effective control of the cigarette density indicator. This is of great significance for improving the production process of related processes and improving the quality of products in this indicator.

[0003] There are also devices for automatically detecting cigarette density in the prior art, such as a material density detection device in a Chinese utility model patent with announcement number CN216926458U, which consists of a body, a material taking mechanism, a feeding mechanism and a detection mechanism, etc. The material taking mechanism includes a material taking motor, a connecting plate and a material taking trough, and the feeding mechanism includes a feeding motor, multiple pulleys, belts, belt pressure blocks, push arms, sliders, and slide rails, and the material taking trough is rotated, the transition block is rotated to avoid rotation, and the other end of the push arm is extended into the storage channel of the material taking trough for feeding. However, this material taking method and feeding method are easy to clamp cigarettes with the side wall, causing the cigarettes to be twisted and deformed and jammed, and the structure of the feeding mechanism is too complicated, and the work between the belt and the pulley is more prone to failure, requiring regular maintenance, which increases the workload of personnel. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies in the prior art. It is a device that automatically detects the density distribution of cigarettes by a screw propulsion method. Cigarettes are transported through a push-type hopper and the material is fed by a screw propulsion method. It aims to solve the continuity of material collection and the simplicity of the feeding device structure and to make feeding more stable. To achieve the above-mentioned purpose, the utility model proposes a device for automatically detecting the density distribution of cigarettes by a screw propulsion method, comprising a sample feeding device, a sample pushing device cooperating with the sample feeding device, a sample detection device, and a sample collecting device; the sample feeding device comprises a hopper with an inclined sliding surface, a lifting plate arranged on one side of the hopper and a slope plate connected to the lifting plate, the slope plate is arranged on a side of the lifting plate away from the hopper, and a sample pushing device is provided on a side of the slope plate away from the hopper; the sample pushing device comprises a feeding track for conveying samples, a sample pusher for pushing samples to move laterally along the feeding track, a threaded screw and a second driving motor for driving the sample pusher to move laterally, and a sample detection device is provided at the tail end of the feeding track; the sample detection device adopts a resonant cavity microwave sensor, and the sample detection device comprises a detection channel coaxial with the feeding track; the sample collecting device comprises a sorting device and a sample collection box.

[0005] Preferably, the lifting plate is driven by a driving mechanism, which includes a first driving motor, a connecting rod connected to the output shaft of the first driving motor, a roller follower arranged on the connecting rod, and the lifting plate connected to the roller follower, and the connecting rod drives the rotation of the roller follower to drive the lifting plate to rise and fall.

[0006] Preferably, the slope plate is provided with an inclined surface for convenient material unloading, and when the lifting plate is raised to the highest position, the material can enter the feeding track from the inclined surface of the slope plate.

[0007] Preferably, the hopper and the lifting plate have the same inclination angle as the bevel cutout for material removal, and the slope plate and the lifting plate have the same inclination angle as the bevel cutout for material removal.

[0008] Preferably, one end of the sample pusher is stuck in the thread of the threaded screw, and the sample pusher moves forward linearly as the threaded screw rotates. The pushing end of the sample pusher is placed in the feeding track, and the sample pusher pushes the sample in the feeding track forward when it moves forward linearly.

[0009] Preferably, the sorting device comprises a sorting track for sorting qualified products from unqualified products and a third driving motor for driving the sorting track to rotate clockwise or counterclockwise.

[0010] Preferably, the minimum opening height of the oblique notch for material cutting in the middle of the lifting plate is 10 mm.

[0011] Preferably, the length of the cylinder at the pushing end of the sample pusher is 35 mm.

[0012] Preferably, the detection channel of the sample detection device is coaxial with the feeding track, and the sorting track is coaxial with the detection channel of the sample detection device.

[0013] Compared with the prior art, the device for automatically detecting cigarette density distribution by screw rod propulsion provided by the utility model has the following beneficial effects:

[0014] 1. After the lifting plate rises, the cigarettes will rise up each time, passing through the more than 10 cm oblique cut and then naturally sliding onto the feeding guide rail through the slope plate, without squeezing, twisting or jamming.

[0015] 2. The mechanical structure of the entire sample pushing device is simple and stable, and all transportation is more stable.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a top view of the internal structure of a device for automatically detecting cigarette density distribution in a screw rod propulsion manner.

[0018] Figure 2 The utility model is a schematic diagram of the structure of a feeding unit of a device for automatically detecting cigarette density distribution in a screw rod propulsion mode.

[0019] Figure 3 The utility model is a schematic diagram of the structure of a feeding unit of a device for automatically detecting cigarette density distribution in a screw rod propulsion mode.

[0020] Figure 4 The utility model is a structural schematic diagram of a device for automatically detecting cigarette density distribution in a screw rod advancing manner.

[0021] In the figure: 1-sample feeding device, 2-sample pushing device, 3-sample detection device, 4-sample collecting device, 11-hopper, 12-lifting plate, 121-bevel cut for unloading, 13-first driving motor, 14-connecting rod, 141-roller follower, 15-limiting track, 16-slope plate, 21-second driving motor, 22-threaded screw, 23-sample pusher, 24-feeding track, 25-elevated platform, 41-sorting device, 411-third driving motor, 412-sorting guide rail, 42-sample collecting box. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiments

[0026] See also Figure 1-Figure 3A device for automatically detecting cigarette density distribution by screw propulsion includes a sample feeding device 1, a sample pushing device 2 matched with the sample feeding device 1, a sample detection device 3, and a sample collecting device 4. The sample feeding device 1 includes a hopper 11 with an inclined sliding surface, a lifting plate 12 arranged on one side of the hopper 11, and a slope plate 16 connected to the lifting plate 12, wherein the slope plate 16 is arranged on a side of the lifting plate 12 away from the hopper 11, and a feeding track 24 is arranged on a side of the slope plate 16 away from the hopper.

[0027] Specifically, cigarettes are placed in the hopper 11, the bottom surface of the hopper 11 is tilted, and the lifting plate 12 is at the lowest side of the hopper 11, and performs up and down reciprocating motion on this side. Every time the lifting plate 12 rises from the lowest point, it can drive the cigarettes to rise. When the cigarettes are on the lifting plate 12, they tend to move toward the material discharge channel, but are blocked by the slope plate 16. When the lowest surface of the inclined notch 121 of the material discharge exceeds or equals the highest point of the slope plate 16, the cigarettes naturally slide into the feeding track 24. The lifting plate 12 pushes the material without squeezing the cigarettes, causing the tobacco shreds to be squeezed out during the transportation process, which affects the test results, and the design will not cause cigarette jams during transportation.

[0028] See also Figure 2 In an optional embodiment, the lifting plate 12 is driven by a driving mechanism, which includes a first driving motor 13, a connecting rod 14 connected to the output shaft of the first driving motor 13, a roller follower 141 provided on the connecting rod 14, and the lifting plate 12 connected to the roller follower 141. The connecting rod 14 drives the roller follower 141 to rotate, thereby driving the lifting plate 12 to rise and fall.

[0029] Specifically, the first drive motor 13 drives the connecting rod 14 to rotate, and the connecting rod 14 drives the roller follower 141 to rotate. The roller follower 141 can be a bearing or a rotating shaft that can be purchased on the market, which realizes a sliding connection and reduces friction. The first drive motor 13 is a variable frequency motor, so that the connecting rod 14 can realize clockwise and counterclockwise rotation switching, which facilitates the lifting and lowering of the lifting plate 12.

[0030] See also Figure 2-3 In an optional embodiment, a material cutting oblique notch 121 is provided in the center of the lifting plate 12. The lifting plate 12 is thinner at the upper end of the material cutting oblique notch 121 than at the lower end of the material cutting oblique notch 121. The material cutting oblique notch 121 protrudes an oblique surface on the lifting plate to connect with the inclined surface of the hopper 11 for taking materials from the hopper 11. The material cutting oblique notch 121 is a straight line inclined downward along the direction close to the feeding track. The minimum opening height of the material cutting oblique notch 121 is 10 mm. The current maximum diameter of a cigarette is about 9 mm, and the notch has better adaptability.

[0031] Specifically, when the lowest surface of the material discharge oblique notch 121 exceeds or is equal to the highest point of the slope plate 16, the cigarette slides into the material discharge channel.

[0032] See also Figure 3-4 In an optional embodiment, both sides of the lifting plate 12 are arranged in the limiting rails 15, and the limiting rails 15 can limit the lifting plate 12 to make a straight up and down reciprocating motion. The inclined surface of the slope plate 16 enters the feeding rail 24 to ensure that the cigarettes slide naturally into the feeding rail 24.

[0033] See also Figure 4 In an optional embodiment, the sample pushing device 2 includes an elevated platform 25, a second drive motor 21 arranged on the elevated platform 25, a feeding track 24 for conveying samples, a sample pusher 23 for pushing the sample to move laterally along the feeding track 24, a threaded screw 22 for driving the sample pusher 23 to move laterally, and a coupling 26 connecting the second drive motor 21 and the threaded screw 22.

[0034] Specifically, the elevated platform 25 places the sample pushing device 2 and the sample detection device 3 at a certain height and in a plane, so that each step of the operation is more connected, and the cigarette will not be deformed or the end will fall off to affect the density during the sampling and sample delivery process. The second drive motor 21 is a servo motor, which can provide a more stable and high-precision pushing service, and the sample detection device 3 can detect the density distribution of the sample more accurately. The pushing end of the sample pusher 23 is arranged in the feeding track 24, and the pushing end of the sample pusher 23 is designed as a cylinder, which expands the contact surface with the pushed sample and can push the sample more stably. The length of the pushing end cylinder of the sample pusher 23 is 35 mm, and the channel of the sample detection device 3 is 33 mm. When one end of the sample pusher 23 fixed on the threaded screw 22 moves to the bottom with the threaded screw, the pushing end of the sample pusher 23 pushes the sample through the sample detection device 3 and can stably stop on the sorting guide rail 412.

[0035] See also Figure 4 In an optional embodiment, the sample detection device 3 uses a resonant cavity microwave sensor, and the sample detection device 3 includes a detection channel coaxial with the feeding track 24, so that the sample can pass through the resonant cavity microwave sensor horizontally. The resonant cavity microwave sensor is based on the resonant cavity microwave detection principle. When the sample passes through the microwave resonant cavity, it will cause the microwave frequency to shift. The moisture density of the tested cigarette sample can be calculated by measuring the frequency shift. And because the microwave measurement method is a full-area scan, it can accurately measure every 0.1 mm, with high accuracy.

[0036] See also Figure 4In an optional embodiment, the sample collecting device 4 includes a sorting device 41 for sorting qualified products and unqualified products and a sample collecting box 42. The sorting device 41 includes a third driving motor 411 and a sorting guide rail 412.

[0037] Specifically, the sorting guide rail 412 is coaxial with the detection channel of the detection mechanism 3, and the sample passes through the resonant cavity microwave sensor and enters the sorting guide rail 412 for sorting. A partition is set in the middle of the sample collection box 42 to facilitate the collection of qualified products and unqualified products. The partition of the sample collection box 42 is placed directly below the sorting guide rail 412 and is in the same plane as the axial center of the sorting guide rail 412. The third drive motor 411 drives the sorting guide rail 412 to rotate clockwise or counterclockwise to accurately collect qualified products and unqualified products into the corresponding collection box.

[0038] Working process of this utility model:

[0039] In the working process of a device for automatically detecting density distribution of cigarettes by screw propulsion, the sample pusher 24 is normally located at the end far away from the sample detection device 3, and cigarettes are placed in the hopper 11 in advance, and the lifting plate 12 is lifted up and down at the lowest point of the hopper 11. Each time the lifting process is carried out, the cigarettes can be driven to rise. The cigarettes tend to move toward the feeding track 24, but are blocked by the slope plate 16. When the lifting plate 12 rises to a position where the cigarette exceeds or is equal to the highest position of the slope plate 16, the cigarette slides down the slope plate 16 into the feeding track 24. After the cigarette enters the feeding track 24, the laser sensor detects that a sample has fallen into the feeding track 24, the sample feeding device 3 stops feeding, and the second drive motor 21 drives the threaded screw 22 to rotate. The sample pusher 23 connected to the threaded screw 22 moves laterally along the feeding track 24 along the thread, pushing the sample through the sample detection device 3, and finally the sample is placed on the sorting guide rail 412. The third drive motor 411 drives the sorting guide rail 412 to move clockwise or counterclockwise to collect the sample into the corresponding collection box. The sorting guide rail rotates 360 degrees and returns to the original position to carry out the next section of sample sampling, transportation and detection.

[0040] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0041] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A device for automatically detecting cigarette density distribution by screw propulsion, comprising a sample feeding device (1), a sample pushing device (2) cooperating with the sample feeding device (1), a sample detection device (3), and a sample collecting device (4), characterized in that: The sample feeding device (1) comprises a hopper (11) with an inclined sliding surface, a lifting plate (12) arranged on one side of the hopper, a gradient plate (16) connected to the lifting plate, and a driving mechanism, wherein a material unloading oblique cutout (121) is provided in the middle of the lifting plate (12), the gradient plate (16) is arranged on a side of the lifting plate (12) away from the hopper, and a sample pushing device (2) is provided on a side of the gradient plate (16) away from the hopper (11), and the driving mechanism comprises a first driving motor (13), a connecting rod (14) connected to an output shaft of the first driving motor (13), and a roller follower (141); The sample pushing device (2) comprises a feeding track (24) for conveying samples, a sample pusher (23) for pushing the samples to move laterally along the feeding track, a threaded screw (22) for driving the sample pusher to move laterally, and a second driving motor (21), and a sample detection device (3) is provided at the rear end of the feeding track (24); The sample detection device (3) adopts a resonant cavity microwave sensor, and the sample detection device comprises a detection channel coaxial with the feeding track (24); The sample collection device (4) comprises a sorting device (41) and a sample collection box (42).

2. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The lifting plate (12) is driven by a driving mechanism, the driving mechanism comprising a first driving motor (13), a connecting rod (14) connected to an output shaft of the first driving motor (13), the roller follower (141) arranged on the connecting rod, and the lifting plate (12) connected to the roller follower (141), the connecting rod drives the roller follower (141) to rotate, thereby driving the lifting plate (12) to rise and fall.

3. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The slope plate (16) is provided with an inclined surface for convenient material unloading, and when the lifting plate (12) is raised to the highest position, the material can enter the feeding track (24) from the inclined surface of the slope plate (16).

4. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The hopper (11) and the material discharging bevel cutout (121) of the lifting plate (12) have the same inclination angle, and the slope plate (16) and the material discharging bevel cutout (121) of the lifting plate (12) have the same inclination angle.

5. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: One end of the sample pusher (23) is stuck in the thread of the threaded screw (22), and the sample pusher (23) moves forward linearly as the threaded screw rotates. The pushing end of the sample pusher (23) is placed in the feeding track, and the sample pusher pushes the sample in the feeding track forward when it moves forward linearly.

6. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The minimum opening height of the blanking oblique cutout (121) in the middle of the lifting plate (12) is 10 mm.

7. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The length of the cylindrical body at the pushing end of the sample pusher (23) is 35 mm.

8. The device for automatically detecting cigarette density distribution by screw rod advancement as claimed in claim 1, characterized in that: The sorting device (41) comprises a sorting track (412) for sorting qualified products from unqualified products and a third driving motor (411) for driving the sorting track (412) to rotate clockwise or counterclockwise.

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