A tobacco tensile performance testing device

Abstract

The present invention discloses a tobacco tensile performance detection device, comprising a support mechanism, a tobacco tensile parameter detection mechanism, a tobacco positioning mechanism and a tobacco tensile state detection mechanism; the support mechanism comprises a first support and a second support; the tobacco tensile parameter detection mechanism comprises a force detection unit, a support driving unit and a displacement detection unit; the tobacco positioning mechanism comprises a first positioning component and a second positioning component; the tobacco tensile state detection mechanism comprises a tobacco image acquisition unit. The tobacco tensile performance detection device disclosed in the present invention can detect the force parameters and deformation parameters of tobacco in the process of self-stretching and breaking through the tobacco tensile parameter detection mechanism, thereby quickly and accurately obtaining the tensile performance of tobacco.

Description

Technical Field

[0001] The present invention relates to the field of tobacco shred performance detection, and more specifically, to a tobacco shred tensile performance detection device. Background Art

[0002] Cut tobacco is the raw material for producing cigarettes after tobacco leaves are cut. At present, cigarette industry enterprises mainly focus on the performance parameters of cut tobacco, such as filling value, elasticity, whole-shred rate and moisture content. The values ​​of these performance parameters will directly affect the sensory quality and smoke release of cigarettes. However, the existing cut tobacco performance parameters cannot fully reflect the processing performance of cut tobacco. In the process of cigarette rolling, it is found that the tensile properties of cut tobacco have an important influence on the applicability of the machine.

[0003] Taking the tensile strength of tobacco as an example, the greater the tensile strength of tobacco, the better the flexibility of tobacco, and the smaller the loss caused by tobacco breakage during cigarette rolling, which can reflect the processing performance of tobacco. The tensile performance of tobacco is an important factor in evaluating the processing performance of tobacco. The existing testing of the tensile performance of tobacco mainly adopts manual stretching, which relies on human subjective feeling of the ability of tobacco to withstand external forces, and has the disadvantages of low accuracy and low work efficiency.

[0004] Therefore, how to provide a device that can quickly and accurately detect the tensile properties of tobacco has become a technical problem that urgently needs to be solved in this field. Summary of the invention

[0005] An object of the present invention is to provide a new technical solution for a tobacco shred tensile property detection device which can quickly and accurately detect the tobacco shred tensile property.

[0006] According to a first aspect of the present invention, a device for detecting the tensile properties of cut tobacco is provided.

[0007] The tobacco tensile property detection device comprises a support mechanism, a tobacco tensile parameter detection mechanism, a tobacco positioning mechanism and a tobacco tensile state detection mechanism; wherein,

[0008] The bracket mechanism comprises a first bracket and a second bracket, wherein the first bracket and the second bracket are arranged opposite to each other;

[0009] The tobacco tensile parameter detection mechanism comprises a force detection unit, a bracket driving unit and a displacement detection unit, wherein the force detection unit is mounted on the first bracket, the bracket driving unit is configured to drive the second bracket to move in a direction away from or close to the first bracket, and the displacement detection unit is configured to detect the moving distance of the second bracket;

[0010] The tobacco positioning mechanism comprises a first positioning component and a second positioning component;

[0011] The first positioning assembly includes a first support seat and a first positioning block, the first support seat is mounted on the force detection unit, a first tobacco groove is provided on the first support seat, a first positioning protrusion is provided on the first positioning block, the first tobacco groove matches with the first positioning protrusion, and a first tobacco cavity for accommodating the end of the tobacco is formed between the groove bottom of the first tobacco groove and the first positioning protrusion, and the height of the first tobacco cavity is 10%-30% of the thickness of the end of the tobacco;

[0012] The second positioning assembly includes a second supporting seat and a second positioning block, the second supporting seat is installed on the second bracket, a second tobacco groove is provided on the second supporting seat, a second positioning protrusion is provided on the second positioning block, the second tobacco groove matches with the second positioning protrusion, and a second tobacco cavity for accommodating the end of the tobacco is formed between the groove bottom of the second tobacco groove and the second positioning protrusion, the height of the second tobacco cavity is 10%-30% of the thickness of the end of the tobacco, and the height of the second tobacco cavity is less than the height of the first tobacco cavity;

[0013] The tobacco shred stretching state detection mechanism comprises a tobacco shred image acquisition unit, and the tobacco shred image acquisition unit is configured to acquire an image of the tobacco shred clamped between the first positioning assembly and the second positioning assembly.

[0014] Optionally, the support mechanism further includes a base, and the tobacco stretching state detection mechanism further includes a tobacco image acquisition unit support;

[0015] The first bracket, the second bracket, the bracket driving unit, the displacement detection unit and the tobacco image acquisition unit bracket are all installed on the base, and the tobacco stretching state detection mechanism is located below the tobacco clamped between the first positioning component and the second positioning component.

[0016] Optionally, the imaging direction of the tobacco image acquisition unit is perpendicular to the tobacco clamped between the first positioning component and the second positioning component.

[0017] Optionally, the first bracket and the second bracket are both L-shaped, and the long arm of the first bracket is arranged opposite to the long arm of the second bracket;

[0018] The force detection unit is mounted on the long arm of the first bracket, and the second support base is mounted on the long arm of the second bracket;

[0019] The short arm of the first bracket is fixedly connected to the base, and the short arm of the second bracket is connected to the bracket driving unit.

[0020] Optionally, the force detection unit is a tension sensor.

[0021] Optionally, the support driving unit is a linear motor, and the linear motor includes a linear motor stator and a linear motor mover;

[0022] The displacement detection unit is a grating ruler, and the second bracket and the grating ruler are both installed on the linear motor mover.

[0023] Optionally, the first positioning assembly further includes a third supporting seat, a first matching rod and a first resetting member;

[0024] The third support seat is located at a side of the first positioning block away from the first support seat, and the third support seat is installed on the force detection unit, and a first matching hole is provided on the third support seat;

[0025] The first matching rod is slidably matched with the first matching hole, and the first matching rod is fixedly connected with the first positioning block;

[0026] The first restoring member is sleeved on the first matching rod, and the first restoring member is located between the first positioning block and the third supporting seat to provide an elastic force to the first positioning block toward the first supporting seat.

[0027] Optionally, a first handle is provided at the end of the first mating rod, and the first handle is located on a side of the third supporting seat away from the first positioning block.

[0028] Optionally, the second positioning assembly further includes a fourth supporting seat, a second matching rod and a second restoring member;

[0029] The fourth support seat is located at a side of the second positioning block away from the second support seat, and the fourth support seat is installed on the second bracket, and a second matching hole is provided on the fourth support seat;

[0030] The second matching rod is slidably matched with the second matching hole, and the second matching rod is fixedly connected with the second positioning block;

[0031] The second restoring member is sleeved on the second matching rod, and the second restoring member is located between the second positioning block and the fourth supporting seat to provide an elastic force to the second positioning block toward the second supporting seat.

[0032] Optionally, a second handle is provided at the end of the second mating rod, and the second handle is located on a side of the fourth supporting seat away from the second positioning block.

[0033] The tobacco shred tensile property detection device disclosed in the present invention can detect the stress parameters and deformation parameters of tobacco shreds during the process of self-stretching until they break through the tobacco shreds through a tobacco shred tensile parameter detection mechanism, thereby quickly and accurately obtaining the tensile property of the tobacco shreds.

[0034] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0036] Figure 1 It is a schematic structural diagram of an embodiment of a device for detecting the tensile properties of shredded tobacco disclosed in the present invention.

[0037] Figure 2 It is a schematic structural diagram of an embodiment of a first positioning component of a tobacco tensile property testing device disclosed in the present invention.

[0038] The following are marked in the figure:

[0039] The first bracket -1, the second bracket -2, the force detection unit -3, the bracket driving unit -4, the displacement detection unit -5, the first positioning assembly -6, the first supporting seat -601, the first tobacco groove -6010, the first positioning block -602, the first positioning protrusion -6020, the third supporting seat -603, the first matching rod -604, the first handle -6040, the first reset member -605, the second positioning assembly -7, the tobacco image acquisition unit -8, the base -9, the tobacco image acquisition unit bracket -10, and the tobacco -01. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0044] like Figure 1 and Figure 2 As shown, the tobacco tensile property detection device disclosed in the present invention includes a support mechanism, a tobacco tensile parameter detection mechanism, a tobacco positioning mechanism and a tobacco stretching state detection mechanism.

[0045] The bracket mechanism includes a first bracket 1 and a second bracket 2. The first bracket 1 and the second bracket 2 are arranged opposite to each other. The specific structures of the first bracket 1 and the second bracket 2 can be flexibly selected according to actual needs, such as a frame bracket or a plate bracket.

[0046] The tobacco tensile parameter detection mechanism includes a force detection unit 3, a bracket drive unit 4 and a displacement detection unit 5. The force detection unit 3 is installed on the first bracket 1. The bracket drive unit 4 can be used to drive the second bracket 2 to move in a direction away from or close to the first bracket 1. The displacement detection unit 5 can be used to detect the moving distance of the second bracket 2. The force detection unit 3 can be, for example, a tension sensor or a tension meter. The bracket drive unit 4 can be, for example, a linear motor or a piston mechanism. The displacement detection unit 5 can be, for example, a grating ruler or a displacement sensor.

[0047] The tobacco positioning mechanism comprises a first positioning component 6 and a second positioning component 7 .

[0048] The first positioning assembly 6 includes a first support seat 601 and a first positioning block 602. The first support seat 601 is mounted on the force detection unit 3. A first tobacco groove 6010 is provided on the first support seat 601. A first positioning protrusion 6020 is provided on the first positioning block 602. The first tobacco groove 6010 is matched with the first positioning protrusion 6020, and a first tobacco cavity for accommodating the end of the tobacco 01 is formed between the groove bottom of the first tobacco groove 6010 and the first positioning protrusion 6020. In order to avoid the problem of inaccurate detection results due to excessive squeezing of the tobacco 01, the height of the first tobacco cavity is 10%-30% of the thickness of the end of the tobacco 01.

[0049] The second positioning assembly 7 includes a second support seat and a second positioning block. The second support seat is mounted on the second bracket, and a second tobacco groove is provided on the second support seat. A second positioning protrusion is provided on the second positioning block. The second tobacco groove matches the second positioning protrusion, and a second tobacco cavity for accommodating the end of the tobacco 01 is formed between the groove bottom of the second tobacco groove and the second positioning protrusion. In order to avoid the problem of inaccurate detection results due to excessive extrusion of the tobacco 01, the height of the second tobacco cavity is 10%-30% of the thickness of the end of the tobacco 01.

[0050] In addition, in the process of detecting the tensile properties of the tobacco 01, the bracket driving unit 4 drives the second bracket 2 to move, and the second positioning component 7 moves in a direction away from the first bracket 1 under the drive of the second bracket 2. In order to prevent the tobacco 01 from loosening and to more accurately detect the tensile properties of the tobacco 01, the height of the second tobacco cavity is less than the height of the first tobacco cavity. In specific implementation, the height of the second tobacco cavity can be 80%-90% of the height of the first tobacco cavity.

[0051] The tobacco shred stretching state detection mechanism includes a tobacco shred image acquisition unit 8. The tobacco shred image acquisition unit 8 can be used to acquire an image of the tobacco shred 01 clamped between the first positioning component 6 and the second positioning component 7. The tobacco shred image acquisition unit 8 can be, for example, a high-speed camera. Since the initial tension value detected by the force detection unit 3 has a certain hysteresis relative to the initial position value detected by the displacement detection unit 5, the tension value detected by the force detection unit 3 and the position value detected by the displacement detection unit 5 are not synchronized. In order to avoid the problem of inaccurate detection of the tensile performance of tobacco shreds caused by the asynchrony between the tension value detected by the force detection unit 3 and the position value detected by the displacement detection unit 5, the present disclosure uses the image of the tobacco shred 01 acquired by the tobacco shred image acquisition unit 8 to more accurately determine whether the tobacco shred 01 is fully straightened, thereby facilitating more accurate detection of the tensile performance of the tobacco shred 01. The above-mentioned term "fully straightened" refers to the state of the tobacco shred 01 when the tobacco shred 01 is straight and the tension value detected by the force detection unit 3 is 0 at an instant before the force detection unit 3 detects the tension value (for example, 10ms).

[0052] In the process of testing the tensile properties of the tobacco 01, the two ends of the tobacco 01 can be clamped in the first tobacco cavity of the first positioning component 6 and the second tobacco cavity of the second positioning component 7. Then the support driving unit 4 drives the second support 2 to move away from the first support 1. At the same time, the tobacco image acquisition unit 8 continuously acquires the image of the tobacco 01, and continuously obtains the tension value detected by the force detection unit 3 and the position value detected by the displacement detection unit 5. As the tension on the tobacco 01 increases, the tobacco 01 is finally broken.

[0053] According to the image of the tobacco 01 collected by the tobacco image acquisition unit 8, the tension value detected by the force detection unit 3 and the distance value detected by the displacement detection unit 5, the tensile properties of the tobacco 01 such as tensile strength, tensile deformation and tensile elasticity can be obtained.

[0054] The tensile strength of the above-mentioned tobacco 01 is the tensile force F detected by the force detection unit 3 when the tobacco 01 is pulled apart. The tensile deformation of the above-mentioned tobacco 01 can be calculated as follows: the position value detected by the displacement detection unit 5 when the tobacco 01 is fully stretched is the initial position S0, and the position value detected by the displacement detection unit 5 when the tobacco 01 is pulled apart is the final position Sf , S f -S0 is the tensile deformation of the tobacco 01. In specific implementation, whether the tobacco 01 is pulled apart can also be judged based on the image of the tobacco 01 collected by the tobacco image collection unit 8, so as to more accurately obtain the final position S f The above tensile elasticity can be calculated as follows: F / (S f -S0).

[0055] The tobacco shred tensile property detection device disclosed in the present invention can detect the stress parameters and deformation parameters of the tobacco shreds 01 during the process of self-stretching until they break through the tobacco shreds through the tobacco shred tensile parameter detection mechanism, thereby quickly and accurately obtaining the tensile property of the tobacco shreds.

[0056] In one embodiment of the tobacco tensile property detection device disclosed in the present invention, the support mechanism further includes a base 9. The tobacco tensile state detection mechanism further includes a tobacco image acquisition unit support 10. The first support 1, the second support 2, the support drive unit 4, the displacement detection unit 5 and the tobacco image acquisition unit support 10 are all installed on the base 9, and the tobacco tensile state detection mechanism is located below the tobacco 01 clamped between the first positioning component 6 and the second positioning component 7. The structure of this tobacco tensile property detection device is stable, and the tobacco image acquisition unit 8 is stable in imaging, which is conducive to more accurate detection of the tensile property of the tobacco 01.

[0057] Furthermore, in order to improve the stability of the image of the tobacco 01 captured by the tobacco image acquisition unit 8 , the imaging direction of the tobacco image acquisition unit 8 is perpendicular to the tobacco 01 clamped between the first positioning component 6 and the second positioning component 7 .

[0058] Further, in order to improve the compactness of the structure of the tobacco tensile property detection device, the first bracket 1 and the second bracket 2 are both L-shaped, and the long arm of the first bracket 1 is arranged opposite to the long arm of the second bracket 2. The force detection unit 3 is mounted on the long arm of the first bracket 1, and the second support base is mounted on the long arm of the second bracket 2. The short arm of the first bracket 1 is fixedly connected to the base 9, and the short arm of the second bracket 2 is connected to the bracket driving unit 4.

[0059] In one embodiment of the tobacco tensile property detection device disclosed in the present invention, the force detection unit 3 is a tension sensor. In specific implementation, the tension sensor can be "S" type, with an accuracy not less than 0.05 level.

[0060] In one embodiment of the tobacco tensile property detection device disclosed in the present invention, in order to improve the working stability of the support drive unit 4, the support drive unit 4 is a linear motor. The linear motor includes a linear motor stator and a linear motor mover. The displacement detection unit 5 is a grating ruler, and the second support 2 and the grating ruler are both installed on the linear motor mover. In a specific implementation, the resolution of the grating ruler is not less than 0.5μm.

[0061] In one embodiment of the tobacco tensile performance testing device disclosed in the present invention, the first positioning assembly 6 also includes a third support seat 603, a first matching rod 604 and a first reset member 605. The third support seat 603 is located on the side of the first positioning block 602 away from the first support seat 601, and the third support seat 603 is installed on the force detection unit 3. A first matching hole is provided on the third support seat 603. The first matching rod 604 is slidably matched with the first matching hole, and the first matching rod 604 is fixedly connected to the first positioning block 602. The first reset member 605 is sleeved on the first matching rod 604, and the first reset member 605 is located between the first positioning block 602 and the third support seat 603 to provide an elastic force to the first positioning block 602 toward the first support seat 601. The first reset member 605 can be, for example, a compression spring or a spring.

[0062] The first positioning assembly 6 of this structure is convenient to use. When in use, the first positioning block 602 is moved in a direction away from the first support seat 601 by overcoming the elastic force of the first reset member 605, and after the tobacco 01 is placed in the first tobacco groove 6010, the force applied to the first positioning block 602 is stopped, and the first positioning block 602 can position the tobacco 01 in the first tobacco groove formed by the first tobacco groove 6010 and the first positioning protrusion 6020 under the elastic force of the first reset member 605.

[0063] Furthermore, a first handle 6040 is provided at the end of the first matching rod 604. The first handle 6040 is located on a side of the third supporting seat 603 away from the first positioning block 602. The first handle 6040 can be used to more conveniently apply a force to the first positioning block 602.

[0064] In one embodiment of the tobacco tensile properties testing device disclosed in the present invention, the second positioning assembly 7 also includes a fourth support seat, a second matching rod and a second reset member. The fourth support seat is located on the side of the second positioning block away from the second support seat, and the fourth support seat is installed on the second bracket. A second matching hole is provided on the fourth support seat. The second matching rod is slidably matched with the second matching hole, and the second matching rod is fixedly connected to the second positioning block. The second reset member is sleeved on the second matching rod, and the second reset member is located between the second positioning block and the fourth support seat to provide an elastic force to the second positioning block toward the second support seat. The second reset member may be, for example, a compression spring or a spring.

[0065] The second positioning assembly 7 of this structure is easy to use. When in use, the elastic force of the second reset member is overcome to move the second positioning block in a direction away from the second support seat, and after the tobacco 01 is placed in the second tobacco groove, the force applied to the second positioning block is stopped. The second positioning block can position the tobacco 01 in the second tobacco groove formed by the second positioning protrusion under the elastic force of the second reset member.

[0066] Furthermore, a second handle is provided at the end of the second matching rod. The second handle is located on a side of the fourth support seat away from the second positioning block. The second handle can more conveniently apply force to the second positioning block.

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

Claims

1. A tobacco tensile property testing device, characterized in that: It includes a support mechanism, a tobacco tensile parameter detection mechanism, a tobacco positioning mechanism and a tobacco tensile state detection mechanism; wherein, The bracket mechanism comprises a first bracket and a second bracket, wherein the first bracket and the second bracket are arranged opposite to each other; The tobacco tensile parameter detection mechanism comprises a force detection unit, a bracket driving unit and a displacement detection unit, wherein the force detection unit is mounted on the first bracket, the bracket driving unit is configured to drive the second bracket to move in a direction away from or close to the first bracket, and the displacement detection unit is configured to detect the moving distance of the second bracket; The tobacco positioning mechanism comprises a first positioning component and a second positioning component; The first positioning assembly includes a first support seat and a first positioning block, the first support seat is mounted on the force detection unit, a first tobacco groove is provided on the first support seat, a first positioning protrusion is provided on the first positioning block, the first tobacco groove matches with the first positioning protrusion, and a first tobacco cavity for accommodating the end of the tobacco is formed between the groove bottom of the first tobacco groove and the first positioning protrusion, and the height of the first tobacco cavity is 10%-30% of the thickness of the end of the tobacco; The second positioning assembly includes a second supporting seat and a second positioning block, the second supporting seat is installed on the second bracket, a second tobacco groove is provided on the second supporting seat, a second positioning protrusion is provided on the second positioning block, the second tobacco groove matches with the second positioning protrusion, and a second tobacco cavity for accommodating the end of the tobacco is formed between the groove bottom of the second tobacco groove and the second positioning protrusion, the height of the second tobacco cavity is 10%-30% of the thickness of the end of the tobacco, and the height of the second tobacco cavity is less than the height of the first tobacco cavity; The tobacco stretching state detection mechanism comprises a tobacco image acquisition unit, and the tobacco image acquisition unit is configured to acquire an image of the tobacco clamped between the first positioning assembly and the second positioning assembly; The support mechanism further includes a base, and the tobacco stretching state detection mechanism further includes a tobacco image acquisition unit support; The first bracket, the second bracket, the bracket driving unit, the displacement detection unit and the tobacco image acquisition unit bracket are all installed on the base, and the tobacco stretching state detection mechanism is located below the tobacco clamped between the first positioning component and the second positioning component; The force detection unit is a tension sensor.

2. The tobacco tensile property testing device according to claim 1, characterized in that: The imaging direction of the tobacco image acquisition unit is perpendicular to the tobacco clamped between the first positioning component and the second positioning component.

3. The tobacco tensile property testing device according to claim 1, characterized in that: The first bracket and the second bracket are both L-shaped, and the long arm of the first bracket is arranged opposite to the long arm of the second bracket; The force detection unit is mounted on the long arm of the first bracket, and the second support base is mounted on the long arm of the second bracket; The short arm of the first bracket is fixedly connected to the base, and the short arm of the second bracket is connected to the bracket driving unit.

4. The tobacco tensile property testing device according to claim 1, characterized in that: The support driving unit is a linear motor, and the linear motor includes a linear motor stator and a linear motor mover; The displacement detection unit is a grating ruler, and the second bracket and the grating ruler are both installed on the linear motor mover.

5. The tobacco tensile property testing device according to claim 1, characterized in that: The first positioning assembly also includes a third support seat, a first matching rod and a first reset member; The third support seat is located at a side of the first positioning block away from the first support seat, and the third support seat is installed on the force detection unit, and a first matching hole is provided on the third support seat; The first matching rod is slidably matched with the first matching hole, and the first matching rod is fixedly connected with the first positioning block; The first restoring member is sleeved on the first matching rod, and the first restoring member is located between the first positioning block and the third supporting seat to provide an elastic force to the first positioning block toward the first supporting seat.

6. The tobacco tensile property testing device according to claim 5, characterized in that: A first handle is disposed at the end of the first matching rod, and the first handle is located at a side of the third supporting seat away from the first positioning block.

7. The tobacco tensile property testing device according to claim 1, characterized in that: The second positioning assembly also includes a fourth support seat, a second matching rod and a second reset member; The fourth support seat is located at a side of the second positioning block away from the second support seat, and the fourth support seat is installed on the second bracket, and a second matching hole is provided on the fourth support seat; The second matching rod is slidably matched with the second matching hole, and the second matching rod is fixedly connected with the second positioning block; The second restoring member is sleeved on the second matching rod, and the second restoring member is located between the second positioning block and the fourth supporting seat to provide an elastic force to the second positioning block toward the second supporting seat.

8. The tobacco tensile property testing device according to claim 7, characterized in that: A second handle is disposed at the end of the second matching rod, and the second handle is located at a side of the fourth supporting seat away from the second positioning block.

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