A tobacco stem detection device and a long stem detection method

Abstract

The application provides a tobacco stem detection device and a long stem detection method. The device comprises a detection assembly and a clamping assembly. The detection assembly comprises a first detection wall and a second detection wall, and a detection cavity with a detection interval is formed between the first detection wall and the second detection wall. The clamping assembly comprises a moving block, a first clamping piece and a second clamping piece. The first clamping piece and the second clamping piece are installed on the moving block, and a clamping cavity is formed between the first clamping piece and the second clamping piece. The moving block drives the clamping assembly to move towards or away from the detection cavity. The tobacco stem is clamped in the clamping cavity. After the tobacco stem is clamped, the moving block drives the clamping assembly to move towards the clamping cavity. If the clamping assembly can drive the tobacco stem into the detection cavity with a set detection interval, the tobacco stem is a short stem. If the clamping assembly cannot drive the tobacco stem into the detection cavity with a set detection interval, the tobacco stem is a long stem. The device can effectively detect long or short tobacco stems, avoids manual measurement or detection operation, and saves manpower.

Description

Technical Field

[0001] This invention relates to the field of tobacco stem length detection technology, specifically to a tobacco stem detection device and a method for detecting long stems. Background Technology

[0002] The threshing process breaks the raw tobacco into stems and free tobacco leaves. The stems contain long stems, short stems, broken stems, and stem stubble of different sizes. After sieving, the stems are separated into long stems and short stems. However, a certain amount of short stems are mixed into the long stems after sieving. At this point, a certain amount of long stem samples need to be manually taken to test the length of each stem in the sample in order to determine whether the proportion of long stems in the long stem sample meets the quality standard requirements. This testing method is time-consuming and labor-intensive, and manual screening is prone to errors, leading to inaccurate results. Summary of the Invention

[0003] This invention addresses one of the problems existing in the prior art to a certain extent. Therefore, one objective of this invention is to provide a tobacco stem detection device that can effectively detect whether tobacco stems are long or short, avoiding manual measurement or detection operations and saving manpower.

[0004] The above objective is achieved through the following technical solution:

[0005] A tobacco stem detection device includes a detection component and a clamping component. The detection component includes a first detection wall and a second detection wall, and a detection cavity with a detection gap is formed between the first detection wall and the second detection wall. The clamping component includes a moving block, a first clamping member, and a second clamping member. The first clamping member and the second clamping member are mounted on the moving block, and a clamping cavity is formed between the first clamping member and the second clamping member. The moving block drives the clamping component to move towards or away from the detection cavity.

[0006] As a further improvement of the present invention, a first clamping groove is formed on the first clamping member at one end near the second clamping member, a second clamping groove is formed on the second clamping member at one end near the first clamping member, and the clamping cavity is formed at the first clamping groove and the second clamping groove.

[0007] As a further improvement of the present invention, the first clamping member is fixedly mounted on the moving block, and the first clamping member is located at the end of the moving block near the detection cavity; the second clamping member is located at the end away from the detection cavity, and the second clamping member can move on the moving block in a direction close to or away from the first clamping member.

[0008] As a further improvement of the present invention, the clamping assembly further includes a baffle and an elastic member. The baffle is connected to the movable block and is located at the end of the movable block away from the detection cavity. One end of the elastic member is connected to the baffle, and the other end is connected to the second clamping member.

[0009] As a further improvement of the present invention, a sliding groove is provided on the movable block, and a slider is provided protruding at the second clamping member. The slider extends into the sliding groove, and the second clamping member is slidably mounted on the movable block by the cooperation between the slider and the sliding groove.

[0010] As a further improvement of the present invention, the detection assembly further includes a fixing plate, the first detection wall and the second detection wall are disposed opposite to each other, and one end of the first detection wall and the second detection wall are close to the fixing plate, and the other end of the first detection wall and the second detection wall extend toward the clamping assembly, and a detection cavity with an opening at one end facing the detection cavity is formed between the fixing plate, the first detection wall and the second detection wall.

[0011] As a further improvement of the present invention, it also includes a mounting platform, on which the first detection wall and the second detection wall are mounted, and the first detection wall is fixedly connected to the mounting platform. The second detection wall can move on the mounting platform in a direction closer to or away from the first detection wall, so as to adjust the size of the detection spacing by moving the second detection wall.

[0012] As a further improvement of the present invention, a first inclined surface is formed at one end of the first detection wall near the clamping assembly, and the first inclined surface is inclined outward from the end away from the clamping assembly to the end near the clamping assembly; a second inclined surface is formed at one end of the second detection wall near the clamping assembly, and the second inclined surface is inclined outward from the end away from the clamping assembly to the end near the clamping assembly.

[0013] As a further improvement of the present invention, a first touch detection part is provided on the first inclined surface; and a second touch detection part is provided on the second inclined surface.

[0014] One objective of this invention is to provide a method for detecting long stems in tobacco stalks, which can effectively detect long stems.

[0015] The above objective is achieved through the following technical solution:

[0016] A method for detecting the length of a tobacco stem includes the following steps:

[0017] Step S101: Obtain the total mass m1 of the sample;

[0018] Step S102: The tobacco stem is clamped by the first clamping member and the second clamping member;

[0019] Step S103: Control the clamping assembly to move towards the detection cavity;

[0020] Step S104: Determine whether the tobacco stem is a long stem based on whether the clamping component can smoothly enter the detection chamber.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] 1. This invention proposes a tobacco stem detection device. The device clamps the tobacco stem using a clamping cavity. After clamping, a moving block drives a clamping assembly to move closer to the clamping cavity. If the clamping assembly can move the tobacco stem into the detection cavity with a pre-set detection spacing, the tobacco stem is short; if the clamping assembly cannot move the tobacco stem into the detection cavity with the pre-set detection spacing, the tobacco stem is long. This device effectively detects whether a tobacco stem is long or short, avoiding manual measurement or detection and saving manpower. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a tobacco stem detection device in one embodiment;

[0024] Figure 2 This is another structural schematic diagram of a tobacco stem detection device in one embodiment.

[0025] Figure 3 This is a schematic diagram of the detection component in the embodiment;

[0026] Figure 4 This is a schematic diagram of the structure in the embodiment where the second clamping member moves away from the first clamping member;

[0027] Figure 5 This is a schematic diagram of the clamping component in the clamping state in the embodiment;

[0028] Figure 6 This is a schematic diagram of the moving block in the embodiment;

[0029] Figure 7 This is a schematic diagram of the structure of the first clamping member in the embodiment (the slider is omitted here);

[0030] Figure 8 This is a schematic diagram of the structure of the second clamping member in the embodiment (the slider is omitted here). Detailed Implementation

[0031] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific embodiments of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solutions claimed in the present invention.

[0032] like Figure 1-8 A tobacco stem detection device 100 includes a detection component 1 and a clamping component 2. The detection component 1 includes a first detection wall 11 and a second detection wall 12, and a detection cavity 14 with a detection spacing W1 is formed between the first detection wall 11 and the second detection wall 12. The clamping component 2 includes a moving block 21, a first clamping member 22 and a second clamping member 23. The first clamping member 22 and the second clamping member 23 are mounted on the moving block 21, and a clamping cavity 24 is formed between the first clamping member 22 and the second clamping member 23. The moving block 21 drives the clamping component 2 to move closer to or further away from the detection cavity 14.

[0033] This invention proposes a tobacco stem detection device. The device clamps the tobacco stem using a clamping cavity 24. After clamping, a moving block 21 drives a clamping assembly 2 to move closer to the clamping cavity 24. If the clamping assembly 2 can move the tobacco stem into the detection cavity 14 with a pre-set detection spacing, the tobacco stem is short; if the clamping assembly 2 cannot move the tobacco stem into the detection cavity 14 with a pre-set detection spacing, the tobacco stem is long. This device effectively detects whether a tobacco stem is long or short, avoiding manual measurement or detection and saving manpower.

[0034] In this embodiment, the detection spacing W1 is 20mm.

[0035] In this embodiment, if the tobacco stem is too long, it will abut against the first detection wall 11 or the second detection wall 12 when it enters the detection chamber 14. That is, the first detection wall 11 or the second detection wall 12 will block the tobacco stem from entering the detection chamber 14, so that the excessively long tobacco stem cannot enter.

[0036] A first clamping groove 221 is formed on the first clamping member 22 at one end near the second clamping member 23, and a second clamping groove 231 is formed on the second clamping member 23 at one end near the first clamping member 22. The clamping cavity 24 is formed at the first clamping groove 221 and the second clamping groove 231.

[0037] In this embodiment, the first clamping groove 221 is an arc-shaped groove; the second clamping groove 231 is an arc-shaped groove. Furthermore, the cross-sectional size of the clamping cavity 24 is smaller than a semi-circle. The cross-section of a tobacco stem is typically circular or near-circular. By clamping the tobacco stem with the arc-shaped grooves of the first clamping groove 221 and the second clamping groove 231, the tobacco stem can be effectively prevented from detaching from the clamping cavity 24, thus ensuring effective clamping of the tobacco stem.

[0038] The first clamping member 22 is fixedly mounted on the moving block 21, and the first clamping member 22 is located at the end of the moving block 21 near the detection cavity 14; the second clamping member 23 is located at the end away from the detection cavity 14, and the second clamping member 23 can move on the moving block 21 in a direction close to or away from the first clamping member 22.

[0039] When it is necessary to put the tobacco stem into the clamping cavity 24, the second clamping member 23 is moved away from the first clamping member 22 so that the tobacco stem can be put into the clamping cavity 24; after being put in, the second clamping member 23 moves closer to the first clamping member 22 so that the tobacco stem is clamped into the clamping cavity 24 and the tobacco stem is prevented from falling out.

[0040] The clamping assembly 2 further includes a baffle 25 and an elastic member 26. The baffle 25 is connected to the moving block 21 and is located at the end of the moving block 21 away from the detection cavity 14. One end of the elastic member 26 is connected to the baffle 25, and the other end is connected to the second clamping member 23.

[0041] In this embodiment, the elastic element 26 includes a spring. One or more springs may be provided between the baffle 25 and the second clamping member 23.

[0042] In this embodiment, the second clamping member 23 and the baffle 25 are connected by the elastic member 26, so that the second clamping member 23 always moves toward the first clamping member 22.

[0043] When it is necessary to put the tobacco stem into the clamping cavity 24, the second clamping member 23 is manually moved away from the first clamping member 22 so that the tobacco stem can be put into the clamping cavity 24. After it is put in, under the action of the spring, the second clamping member 23 moves closer to the first clamping member 22 so that the tobacco stem is clamped into the clamping cavity 24 and the tobacco stem is prevented from falling out.

[0044] In this embodiment, a sliding groove 211 is provided on the movable block 21, and a slider is provided protruding at the second clamping member 23. The slider extends into the sliding groove 211, and the second clamping member 23 is slidably mounted on the movable block 21 by the cooperation between the slider and the sliding groove 211.

[0045] In some embodiments, a slide rail is provided on the movable block 21, and a pulley is provided at the second clamping member 23. The second clamping member 23 is slidably mounted on the movable block 21 by the cooperation of the pulley and the slide rail.

[0046] The detection assembly 1 further includes a fixing plate 13, the first detection wall 11 and the second detection wall 12 are disposed opposite to each other, and one end of the first detection wall 11 and the second detection wall 12 are close to the fixing plate 13, and the other end of the first detection wall 11 and the second detection wall 12 extend toward the clamping assembly 2. A detection cavity 14 with an opening at one end facing the detection cavity 14 is formed between the fixing plate 13, the first detection wall 11 and the second detection wall 12.

[0047] In this embodiment, the fixing plate 13 is arranged perpendicular to the first detection wall 11 and the second detection wall 12.

[0048] It also includes a first drive assembly, which includes a first motor and a first lead screw 61. The first motor is connected to the first lead screw 61 so as to drive the first lead screw 61 to rotate. The moving block 21 is mounted on the first lead screw 61 so as to drive the moving block 21 to move closer to or further away from the detection cavity 14 by the rotation of the first lead screw 61.

[0049] In this embodiment, a through hole is provided on the fixed plate 13, through which the first lead screw 61 passes and connects to the moving block 21. The first motor is also mounted on the fixed plate 13.

[0050] It also includes a mounting platform, on which the first detection wall 11 and the second detection wall 12 are mounted. The first detection wall 11 is fixedly connected to the mounting platform, and the second detection wall 12 can move on the mounting platform in a direction closer to or away from the first detection wall 11, so as to adjust the size of the detection spacing by moving the second detection wall 12.

[0051] In this embodiment, the fixing plate 13, the first detection wall 11, the second detection wall 12 and the moving block 21 are all mounted on the mounting platform.

[0052] In this embodiment, the first detection wall 11 is fixedly installed on the mounting platform, the second detection wall 12 is disposed opposite to the first detection wall 11, and the second detection wall 12 can move closer to or further away from the first detection wall 11 to adjust the detection spacing W1.

[0053] It also includes a second drive assembly, which includes a second motor and a second lead screw 62. The second motor is connected to the second lead screw 62 so as to drive the second lead screw 62 to rotate. The second detection wall 12 is mounted on the second lead screw 62 so as to drive the second detection wall 12 to move closer to or away from the first detection wall 11 through the rotation of the second lead screw 62.

[0054] In this embodiment, a mounting hole is provided on the first detection wall 11, and the second lead screw 62 passes through the mounting hole and connects to the second detection wall 12. The second motor is mounted on the first detection wall 11.

[0055] A first inclined surface 111 is formed at one end of the first detection wall 11 near the clamping assembly 2, and the first inclined surface 111 is inclined outward from one end away from the clamping assembly 2 to one end near the clamping assembly 2.

[0056] A second inclined surface 121 is formed at one end of the second detection wall 12 near the clamping component 2. The second inclined surface 121 is inclined outward from one end away from the clamping component 2 to one end near the clamping component 2.

[0057] In this embodiment, the openings at the first inclined surface 111 and the second inclined surface 121 gradually decrease in size from the end near the clamping assembly 2 to the end near the fixing plate 13.

[0058] The second motor of the second drive assembly drives the second detection wall 12 to move, thereby adjusting the detection distance between the first detection wall 11 and the second detection wall 12. In some embodiments, an identification card is provided on the fixed plate 13, allowing the size of the detection distance to be read.

[0059] The tobacco stem is clamped onto the clamping assembly 2. A second motor rotates, causing the second detection wall 12 to move, thus adjusting the detection distance to a suitable length. Then, a first motor rotates, driving the moving block 21 towards the detection cavity 14. If the moving block 21 can smoothly move into the detection cavity 14, it indicates that the length of the tobacco stem is less than the detection distance, meaning it is a short stem. If the tobacco stem cannot move into the detection cavity 14, it indicates that the length of the tobacco stem is greater than the detection distance, meaning it is a long stem, and thus the tobacco stem length is acceptable. In some embodiments, the detection distance is 20 mm.

[0060] A first detection surface is formed on the first inclined surface 111, and the first detection surface is used to detect whether the tobacco stem is touched; a second detection surface is formed on the second inclined surface 121, and the second detection surface is used to detect whether the tobacco stem is touched. A controller is also included, and the controller is electrically connected to the first detection surface and the second detection surface.

[0061] Furthermore, in this embodiment, since there is a first inclined slope 111 and a second inclined slope 121, when the clamping assembly 2 moves into the detection cavity 14, one end of the tobacco stem contacts the first inclined slope 111 but does not contact the second inclined slope 121. Therefore, the tobacco stem can be pushed to move radially in the clamping cavity 24 through the first inclined slope 111, that is, to move the tobacco stem a certain distance towards the second inclined slope 121.

[0062] When the clamping assembly 2 moves into the detection chamber 14, one end of the tobacco stem contacts the second inclined surface 121 but not the first inclined surface 111. The tobacco stem can then be pushed to move radially in the clamping chamber 24 through the second inclined surface 121, that is, to move the tobacco stem a certain distance towards the first inclined surface 111.

[0063] When the clamping assembly 2 moves into the detection chamber 14, one end of the tobacco stem contacts the first inclined surface 111 and the other end contacts the second inclined surface 121. The controller receives contact signals from the first detection surface of the first inclined surface 111 and the second detection surface of the second inclined surface 121, indicating that the tobacco stem is too long and cannot enter the detection chamber 14. At this time, the clamping assembly 2 is no longer driven into the detection chamber 14.

[0064] Example 2:

[0065] A method for detecting long stems, applied to a tobacco stem detection device in Example 1, to obtain the long stem rate of tobacco stems, includes the following steps:

[0066] Step S101: Obtain the total mass m1 of the sample;

[0067] Step S102: The tobacco stem is clamped by the first clamping member and the second clamping member;

[0068] Step S103: Control the clamping assembly to move towards the detection cavity;

[0069] Step S104: Determine whether the tobacco stem is a long stem based on whether the clamping component can smoothly enter the detection chamber.

[0070] The following steps are included after step S104:

[0071] Step S105: Obtain the mass m2 of the long stems, and obtain the long stem ratio based on the mass m2 of the long stems and the total mass m1 of the sample.

[0072] In step S105, the long stem ratio is m2 / m1×100%.

[0073] In step S104, the step of determining whether the tobacco stem is a long stem based on whether the clamping assembly can smoothly enter the detection chamber is as follows:

[0074] Step S401: Detect whether the first detection wall touches the tobacco stem, and detect whether the second detection wall touches the tobacco stem;

[0075] If it is detected that neither the first detection wall nor the second detection wall touches the tobacco stem, proceed to step S402.

[0076] If the first detection wall is detected to be touching the tobacco stem while the second detection wall is not touching the tobacco stem, proceed to step S404.

[0077] If the second detection wall is detected to be touching the tobacco stem while the first detection wall is not touching the tobacco stem, proceed to step S404.

[0078] If the first detection wall is detected to be touching the tobacco stem and the second detection wall is also touching the tobacco stem, proceed to step S403.

[0079] Step S402: The clamping component enters the detection chamber and determines that the tobacco stem is a short stem;

[0080] Step S403: Determine that the tobacco stem is a long stem;

[0081] In step S404, the clamping assembly is controlled to continue moving towards the detection cavity, and then the process returns to step S401.

[0082] That is, in step S404, it is necessary to detect that both the first detection wall and the second detection wall either touch the tobacco stem or neither touches the tobacco stem.

[0083] In step S105, the tobacco stems that cannot enter the detection chamber are collected and weighed to obtain the mass m2 of the long stems.

[0084] In this example, the following steps are included before step S101:

[0085] Step S100: Adjust the detection spacing W1 by moving the second detection wall.

[0086] In this embodiment, the detection spacing W1 is 20mm.

[0087] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A tobacco stem detection device, characterized in that, The device includes a detection component and a clamping component. The detection component includes a first detection wall and a second detection wall, and a detection cavity with a detection gap is formed between the first detection wall and the second detection wall. The clamping component includes a moving block, a first clamping member and a second clamping member. The first clamping member and the second clamping member are mounted on the moving block, and a clamping cavity is formed between the first clamping member and the second clamping member. The moving block drives the clamping component to move towards or away from the detection cavity. The first clamping member is fixedly mounted on the movable block, and the first clamping member is located at the end of the movable block near the detection cavity; the second clamping member is located at the end away from the detection cavity, and the second clamping member can move on the movable block in a direction closer to or away from the first clamping member; The clamping assembly further includes a baffle and an elastic element. The baffle is connected to the movable block and is located at the end of the movable block away from the detection cavity. One end of the elastic element is connected to the baffle, and the other end is connected to the second clamping element. It also includes a mounting platform, on which the first detection wall and the second detection wall are mounted. The first detection wall is fixedly connected to the mounting platform, and the second detection wall can move on the mounting platform in a direction closer to or away from the first detection wall, so as to adjust the size of the detection spacing by moving the second detection wall. A first inclined surface is formed at one end of the first detection wall near the clamping assembly, and the first inclined surface is inclined outward from the end away from the clamping assembly to the end near the clamping assembly; a second inclined surface is formed at one end of the second detection wall near the clamping assembly, and the second inclined surface is inclined outward from the end away from the clamping assembly to the end near the clamping assembly.

2. The tobacco stem detection device according to claim 1, characterized in that, A first clamping groove is formed on the first clamping member at one end near the second clamping member, and a second clamping groove is formed on the second clamping member at one end near the first clamping member. The clamping cavity is formed at the first clamping groove and the second clamping groove.

3. The tobacco stem detection device according to claim 1, characterized in that, A sliding groove is provided on the movable block, and a slider protrudes from the second clamping member. The slider extends into the sliding groove, and the second clamping member is slidably mounted on the movable block by the cooperation between the slider and the sliding groove.

4. The tobacco stem detection device according to claim 1, characterized in that, The detection assembly further includes a fixing plate, the first detection wall and the second detection wall are disposed opposite to each other, and one end of the first detection wall and the second detection wall are close to the fixing plate, and the other end of the first detection wall and the second detection wall extend toward the clamping assembly. A detection cavity with an opening at one end facing the detection cavity is formed between the fixing plate, the first detection wall and the second detection wall.

5. A method for detecting the length of a tobacco stem, using a tobacco stem detection device according to any one of claims 1-4, comprising the following steps: Step S101: Obtain the total mass m1 of the sample; Step S102: The tobacco stem is clamped by the first clamping member and the second clamping member; Step S103: Control the clamping assembly to move towards the detection cavity; Step S104: Determine whether the tobacco stem is a long stem based on whether the clamping component can smoothly enter the detection chamber.

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