CN117346667A - Automatic calibration device for cigarette length circumference detection - Google Patents

Abstract

The invention relates to the technical field of cigarette detection equipment, and provides an automatic calibration device for detecting the circumference of a cigarette length, which comprises the following components: the device comprises a substrate, a measuring assembly, a supporting assembly and a clamping assembly, wherein the substrate is provided with a through hole, the measuring assembly is arranged at the top of the substrate close to the through hole, a detection area is formed around the through hole, and the measuring assembly is used for detecting parameters of a piece to be detected; the support component is arranged at the bottom of the substrate and comprises a support plate, and the support plate is positioned right below the through hole and used for supporting the piece to be detected; the supporting plate can move along the direction perpendicular to the substrate towards the direction close to or far from the substrate, so that the to-be-detected piece penetrates through the through hole to be detected; the clamping component is close to the bottom of the base plate and arranged on the support plate, and is used for clamping the piece to be tested and placing the piece to be tested on the support plate. The automatic calibration device adopts automatic actions, can realize calibration without manual operation, is simple to operate, and has high consistency of calibration data, thereby effectively controlling the production quality of cigarettes.

Description

Automatic calibration device for cigarette length circumference detection

Technical Field

The invention relates to the technical field of cigarette detection equipment, in particular to an automatic calibration device for cigarette length circumference detection.

Background

The length and circumference of the cigarettes are technical indexes which need to be strictly controlled in the production of cigarette production enterprises. The length of the cigarette influences the consistency of the appearance of the cigarette, and the circumference influences the appearance, the smoking resistance index of the cigarette and the smoking experience of people.

At present, a comprehensive test bench is generally used for detecting the length and circumference of cigarettes. The comprehensive test bench is a fully automatic device, and when the cigarettes enter the detection position of the length circumference unit, a pair of lasers are respectively distributed on opposite sides of the cigarettes, and the length and circumference of the cigarettes are respectively detected.

The length and circumference of the cigarette need to be calibrated before detection. The current calibration mode is manual operation, and an automatic calibration device is not provided. The specific operation method is as follows: when the circumference is calibrated, 2 circumference standard rods are used and are divided into circumference high standard rods and circumference low standard rods. Firstly, putting the cigarettes into cigarette detection positions manually and respectively, and performing high-standard and low-standard operation; when the length is calibrated, 2 length standard rods are used, and are manually put into the machine by manual operation, so that the high standard and the low standard of the length are carried out.

The calibration method needs manual operation, has multiple actions and complex operation, and is easy to make mistakes; the standard rod is a high-precision tool, has higher professional requirements on operators, and has influence on the reliability of the measured value of the length and circumference of the cigarette due to the fact that the data deviation is relatively large when verification frequently occurs due to different placement methods of each operator.

Disclosure of Invention

The invention provides an automatic calibration device for cigarette length circumference detection, which is used for solving the problems that the automatic calibration device for cigarette length circumference detection in the prior art adopts manual operation, has high requirement and complex operation, is easy to make mistakes, causes large data deviation and affects the production of cigarettes.

The invention provides an automatic calibration device for detecting the length circumference of a cigarette, which comprises the following components: the device comprises a substrate, a measuring assembly, a supporting assembly and a clamping assembly, wherein the substrate is provided with a through hole, the measuring assembly is arranged at the top of the substrate close to the through hole, a detection area is formed around the through hole, and the measuring assembly is used for detecting parameters of a piece to be detected; the support assembly is arranged at the bottom of the substrate and comprises a support plate, and the support plate is positioned right below the through hole and is used for supporting the piece to be tested; the supporting plate can move along the direction perpendicular to the substrate and approaching to or separating from the substrate, so that the to-be-detected piece penetrates through the through hole to be placed in the to-be-detected area; the clamping assembly is arranged at the bottom of the base plate near the through hole and used for clamping the to-be-tested piece and placing the to-be-tested piece on the supporting plate.

According to the automatic calibration device for cigarette length circumference detection, the measurement assembly comprises a first circumference measurement piece, a second circumference measurement piece, a first length measurement piece and a second length measurement piece, wherein the first circumference measurement piece and the second circumference measurement piece are oppositely arranged on two sides of the through hole; the first length measuring piece and the second length measuring piece are oppositely arranged at two sides of the through hole; and the first circumference measuring piece, the first length measuring piece, the second circumference measuring piece and the second length measuring piece are surrounded to form a detection area.

According to the automatic calibration device for cigarette length circumference detection, which is provided by the invention, the automatic calibration device for cigarette length circumference detection further comprises a clamping piece, wherein the clamping piece is arranged on the inner wall surface of the through hole and is used for clamping the piece to be detected.

According to the automatic calibration device for detecting the circumference of the length of the cigarette, the supporting assembly further comprises the first guide rail, the first guide rail is vertically connected with the base plate, the supporting plate is connected with the first guide rail, and the supporting plate can slide along the extending direction of the first guide rail.

According to the automatic calibration device for cigarette length circumference detection, the support assembly further comprises a first screw rod and a first screw rod nut, the first screw rod is parallel to the first guide rail, the first screw rod nut is connected with the first screw rod in a threaded mode, the first screw rod nut is connected with the support plate, and the first screw rod is used for driving the first screw rod nut and the support plate to move along the extending direction of the first screw rod in a rotating mode.

According to the automatic calibration device for cigarette length circumference detection, the supporting assembly further comprises a first driving motor, and a driving shaft of the first driving motor is connected with the first screw rod.

According to the automatic calibration device for cigarette length circumference detection, the clamping assembly comprises clamping jaws and a controller, wherein the controller is connected with the clamping jaws and used for controlling clamping and loosening of the clamping jaws; and the clamping jaw can move towards or away from the supporting plate along a direction parallel to the substrate.

According to the automatic calibration device for detecting the circumference of the length of the cigarette, the clamping assembly further comprises a second screw rod and a second screw rod nut, the second screw rod is parallel to the base plate and extends towards the direction of the supporting plate, the second screw rod nut is connected with the second screw rod in a threaded mode, the clamping jaw is connected with the second screw rod nut, and the second screw rod rotates to drive the second screw rod nut and the clamping jaw to move along the extending direction of the second screw rod.

According to the automatic calibration device for cigarette length circumference detection, the clamping assembly further comprises a second driving motor, and a driving shaft of the second driving motor is connected with the second screw rod.

According to the automatic calibration device for cigarette length circumference detection, the clamping assembly further comprises a displacement sensor, and the displacement sensor is used for detecting the moving distance of the clamping jaw.

According to the automatic calibration device for detecting the circumference of the length of the cigarette, the clamping component clamps the piece to be detected on the supporting plate, and the supporting component is controlled to move so that the piece to be detected is placed in the detection area for detection or calibration. The automatic calibration device adopts automatic actions, can realize calibration without manual operation, is simple to operate, and has high consistency of calibration data, thereby effectively controlling the production quality of cigarettes.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of an automatic calibration device for detecting the circumference of the length of a cigarette provided by the invention;

FIG. 2 is a front view of the automatic calibration device for detecting the circumference of the length of the cigarette in a calibration state;

FIG. 3 is a schematic view of a structure of a clamping jaw for clamping a workpiece;

reference numerals:

100. a substrate; 200. a measuring cylinder;

310. a first circumference measurement; 320. a second circumference measurement; 330. a first length measurement member; 340. a second length measurement member;

400. a support assembly; 410. a support plate; 420. a first guide rail; 430. a first lead screw; 440. a first lead screw nut; 450. a top plate; 460. a first driving motor;

500. a clamping assembly; 510. a clamping jaw; 520. a second lead screw; 530. a second lead screw nut; 540. a second guide rail; 550. a fixing plate; 560. a connecting plate; 570. a second driving motor; 580. a displacement sensor;

600. and a piece to be tested.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

The automatic calibration device for detecting the circumference of the length of the cigarette provided by the invention is described below with reference to fig. 1 to 3.

The invention provides an automatic calibration device for detecting the circumference of the length of a cigarette, which comprises the following components: the substrate 100, the measuring assembly, the supporting assembly 400 and the clamping assembly 500, wherein the substrate 100 is provided with a through hole, the measuring assembly is arranged at the top of the substrate 100 near the through hole, a detection area is formed around the through hole, and the measuring assembly is used for detecting parameters of the to-be-detected piece 600; the support assembly 400 is disposed at the bottom of the substrate 100, and the support assembly 400 includes a support plate 410, where the support plate 410 is located right below the through hole and is used for supporting the to-be-tested piece 600; the support plate 410 can move along the direction perpendicular to the substrate 100 toward or away from the substrate 100, so that the to-be-measured piece 600 passes through the through hole and is disposed in the to-be-measured area; the clamping assembly 500 is disposed near the bottom of the substrate 100, and the clamping assembly 500 is used for clamping the part 600 to be tested and placing the part 600 to be tested on the supporting plate 410.

The clamping assembly 500 clamps the part 600 to be tested and places the part on the supporting plate 410, controls the supporting plate 410 to move along the direction perpendicular to the substrate 100 towards the direction close to the substrate 100 (as in the first direction in fig. 1 and 2), and the part 600 to be tested is provided with a through hole in a detection area, i.e. the top part of the part 600 to be tested is provided with a through hole above the substrate 100 and is in the detection area; the measurement assembly can detect the to-be-detected member 600 located in the detection area, and obtain parameters of the to-be-detected member 600, such as parameters of the length of the to-be-detected member 600, circumference of the to-be-detected member 600, and the like. The part 600 to be tested in the invention can be a cigarette or a standard rod.

After the measurement of the measurement component is completed (after the calibration is completed), the support plate 410 is controlled to move along the direction perpendicular to the substrate 100 towards the direction away from the substrate 100, the part 600 to be measured leaves the detection area and is placed under the through hole, and the calibration is completed once.

According to the automatic calibration device for detecting the circumference of the length of the cigarette, the clamping assembly 500 clamps the piece 600 to be detected on the supporting plate 410, and the supporting assembly 400 is controlled to move so that the piece 600 to be detected is placed in the detection area for detection or calibration. The automatic calibration device adopts automatic actions, can realize calibration without manual operation, is simple to operate, and has high consistency of calibration data, thereby effectively controlling the production quality of cigarettes.

The automatic calibration device for detecting the circumference of the length of the cigarette is carried out under the closed condition in the calibration process, so that the influence of external environment is avoided, and the accuracy of data is improved.

The measuring assembly provided by the invention comprises a circumference measuring piece and a length measuring piece, wherein the circumference measuring piece comprises a first circumference measuring piece 310 and a second circumference measuring piece 320, the first circumference measuring piece 310 and the second circumference measuring piece 320 are oppositely arranged relative to the through hole, the length measuring piece comprises a first length measuring piece 330 and a second length measuring piece 340, and the first length measuring piece 330 and the second length measuring piece 340 are oppositely arranged relative to the through hole.

The first circumference measuring element 310, the first length measuring element 330, the second circumference measuring element 320 and the second length measuring element 340 enclose a detection area, wherein the through hole is located at the center of the detection area, and the to-be-measured element 600 is disposed through the through hole and is located in the detection area. The first circumference measuring element 310 and the second circumference measuring element 320 are matched to detect the diameter of the to-be-detected element 600 positioned in the detection area; the first length measuring element 330 and the second length measuring element 340 are matched to detect the diameter of the to-be-measured element 600 in the detection area, so as to obtain the circumference parameter of the to-be-measured element 600.

The first circumference measuring element 310 and the second circumference measuring element 320 in the present invention are circumference measuring lasers; the first length measurement member 330 and the second length measurement member 340 are each length measurement lasers. It should be noted that, how the first circumference measuring element 310 and the second circumference measuring element 320 measure the circumference of the to-be-measured element 600 and how the first length measuring element 330 and the second length measuring element 340 measure the length of the to-be-measured element 600 are conventional detection methods in the art, which are not specifically described herein.

The automatic calibration device for cigarette length circumference detection provided by the invention further comprises a clamping piece, wherein the clamping piece is arranged on the inner wall surface of the through hole, when the piece 600 to be detected is arranged in the through hole in a penetrating manner, and the top of the piece 600 to be detected is arranged in the detection area, the clamping piece clamps the piece 600 to be detected, so that the piece 600 to be detected is prevented from moving in the detection process, and the accuracy of calibration data is further ensured.

The automatic calibration device for cigarette length circumference detection provided by the invention further comprises a measuring cylinder 200, wherein the measuring cylinder 200 is adaptively embedded in the through hole, and the outer wall surface of the measuring cylinder 200 is connected with the inner wall surface of the through hole; the clamping member is disposed on the inner wall surface of the measuring cylinder 200, and is used for clamping the to-be-measured member 600.

Further, the height of the measuring cylinder 200 is greater than the thickness of the substrate 100, the top of the measuring cylinder 200 is located above the substrate 100, the bottom of the measuring cylinder 200 is located below the substrate 100, and when the supporting plate 410 drives the to-be-measured piece 600 to move towards the substrate 100, the measuring cylinder 200 plays a guiding role to guide the to-be-measured piece 600 to move to the to-be-measured area above the substrate 100.

The clamping piece comprises an adsorption piece which realizes clamping by utilizing an adsorption principle.

The top surface of the supporting plate 410 provided by the invention is provided with the limit groove, the size of the limit groove is matched with that of the piece 600 to be measured, the central axis of the limit groove coincides with the central axis of the through hole, the clamping component 500 clamps the piece 600 to be measured and is arranged in the limit groove to limit the piece 600 to be measured, the position of the piece 600 to be measured is facilitated to be determined, and the accuracy of calibration data of the piece 600 to be measured is improved.

The support assembly 400 provided by the present invention further includes a first guide rail 420, the first guide rail 420 is vertically connected with the base plate 100, the support plate 410 is connected with the first guide rail 420, and the support plate 410 can slide along the extending direction of the first guide rail 420.

The support assembly 400 further comprises a first screw rod 430 and a first screw rod nut 440, wherein the first screw rod 430 is parallel to the first guide rail 420, the first screw rod nut 440 is in threaded connection with the first screw rod 430, the first screw rod nut 440 is connected with the support plate 410, and the first screw rod 430 rotates to drive the first screw rod nut 440 and the support plate 410 to move along the extending direction of the first screw rod 430.

Referring to fig. 1, the first guide rail 420 and the first screw 430 are disposed in parallel, the first guide rail 420 is vertically connected with the substrate 100, the first screw nut 440 is in threaded connection with the first screw 430, the first screw nut 440 is connected with the support plate 410, the first screw nut 440 is sleeved on the first guide rail 420, the first screw 430 is rotated, the first screw nut 440 drives the support plate 410 to move along the extending direction of the first screw 430, and the support plate is stopped after moving to the target position.

Further, the support assembly 400 further includes a first driving motor 460, a top plate 450 is disposed at the top of the first guide rail 420, the first driving motor 460 is disposed on the top plate 450, and a driving shaft of the first driving motor 460 is connected with the first screw 430 and is used for driving the first screw 430 to rotate, so as to drive the first screw nut 440 and the support plate 410 to move up and down along the extending direction of the first screw 430, that is, drive the to-be-tested piece 600 to be placed in the to-be-tested area, or drive the to-be-tested piece 600 to be far away from the to-be-tested area.

The clamping assembly 500 provided by the invention comprises a clamping jaw 510 and a controller, wherein the controller is connected with the clamping jaw 510 and is used for controlling the clamping and loosening of the clamping jaw 510; and the clamping jaw 510 is movable in a direction parallel to the substrate 100 toward or away from the support plate 410.

Referring to fig. 3, the clamping jaw 510 is used for clamping a part 600 to be tested, the part 600 to be tested can be a step shaft-shaped standard rod, and two ends of the standard rod are thick and the middle of the standard rod is thin, so that the clamping jaw 510 is prevented from falling off during clamping. In the process that the clamping jaw 510 clamps the piece 600 to be tested in a direction parallel to the substrate 100 and moves towards or away from the supporting plate 410 (as in the second direction in fig. 1 and 2), the controller controls the clamping jaw 510 to clamp the piece 600 to be tested, in the process that the clamping jaw 510 places the piece 600 to be tested on the supporting plate 410 and controls the supporting plate 410 to move towards the substrate 100, the controller controls the clamping jaw 510 to open, that is, a space exists between the inner wall of the clamping jaw 510 and the piece 600 to be tested, so that the piece 600 to be tested can move towards or away from the substrate 100 along the central axis of the clamping jaw 510, and at the moment, the clamping jaw 510 plays a limiting role, so that the supporting plate 410 is prevented from tilting in the process that the piece 600 to be tested is driven to move towards or away from the substrate 100 by the supporting plate 410.

The clamping assembly 500 of the present invention further includes a second screw 520 and a second screw nut 530, the second screw 520 is disposed parallel to the base plate 100 and extends toward the direction of the support plate 410, the second screw nut 530 is screwed to the second screw 520, the clamping jaw 510 is connected to the second screw nut 530, and the second screw 520 rotates to drive the second screw nut 530 and the clamping jaw 510 to move along the extending direction of the second screw 520.

The second guide rail 540 is provided at the bottom of the base plate 100 in a direction parallel to the base plate 100, the clamping jaw 510 is connected to the second guide rail 540 through the connection plate 560, and the clamping jaw 510 can move toward or away from the support plate 410 in the extending direction of the second guide rail 540.

The second screw 520 is disposed parallel to the second guide rail 540, one end of the second screw 520 is connected to the bottom of the base plate 100 through the fixing plate 550, the second screw nut 530 is in threaded connection with the second screw 520, the clamping jaw 510 is connected to the second screw nut 530, the second screw 520 is rotated, and the second screw nut 530 drives the clamping jaw 510 to move along the extending direction of the second screw 520.

In the calibration process, the second screw 520 is rotated to drive the second screw nut 530 to drive the clamping jaw 510 to move towards the direction approaching to the support plate 410, so that the piece 600 to be measured is placed on the support plate 410; the driving support plate 410 moves along the direction perpendicular to the substrate 100 toward the direction approaching the substrate 100 until the to-be-tested piece 600 is disposed in the through hole and placed in the detection area, as shown in fig. 2.

The clamping assembly 500 provided by the invention further comprises a second driving motor 570, wherein a driving shaft of the second driving motor 570 is connected with the second screw 520 and is used for driving the second screw 520 to rotate so as to drive the second screw nut 530 and the clamping jaw 510 to move along the extending direction of the second screw 520.

The clamping assembly 500 provided by the invention further comprises a displacement sensor 580, wherein the displacement sensor 580 is used for detecting the moving distance of the clamping jaw 510, namely detecting the moving distance of the workpiece 600 to be detected, so that the accuracy of detection or calibration of the workpiece 600 to be detected is improved.

The automatic calibration device for cigarette length circumference detection provided by the invention has the following operation flow in the calibration process: the clamping jaw 510 clamps the piece 600 to be tested (standard rod or cigarette), the second driving motor 570 is started, and the clamping jaw 510 is driven to drive the piece 600 to be tested to move towards the supporting plate 410 along the direction parallel to the substrate 100 until the piece 600 to be tested is placed on the supporting plate 410 right below the through hole; the controller controls the clamping jaw 510 to open, at this time, a space exists between the inner wall of the clamping jaw 510 and the outer wall surface of the part 600 to be measured, and the clamping jaw 510 is used for limiting the position of the part 600 to be measured.

The first driving motor 460 is started, the driving support plate 410 moves along the direction perpendicular to the substrate 100 until the to-be-measured piece 600 passes through the through hole and is positioned in the detection area to stop, at this time, the first circumference measuring laser and the second circumference measuring laser are matched to collect the diameter of the to-be-measured piece 600, and circumference data is obtained through calculation; the first length measuring laser and the second length measuring laser collect and calculate the length data of the part 600 to be measured.

After the detection or calibration is completed, the first driving motor 460 drives the supporting plate 410 to move along the direction perpendicular to the substrate 100 in the direction away from the substrate 100 until the to-be-detected piece leaves the detection area; the controller controls the clamping jaw 510 to clamp the piece 600 to be tested, controls the second driving motor 570 to start, and drives the clamping jaw 510 to drive the piece 600 to be tested to move along the direction parallel to the substrate 100 and away from the supporting plate 410, so that one-time automatic detection or calibration is completed.

The automatic cigarette calibration device provided by the invention realizes automatic calibration of the length and circumference of the cigarettes, replaces manual tedious operation, reduces human participation and reduces the possibility of errors; and moreover, the automatic action, the repeated positioning and the accurate positioning are realized, the consistency of calibration data is high, the reliability of cigarette test data is high, the whole calibration process is performed under a closed condition, the influence of the environment on the calibration is reduced, the accuracy of the test data is improved, and the production quality of cigarettes is effectively controlled.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a cigarette length circumference detects automatic calibration device which characterized in that includes: the device comprises a substrate, a measuring assembly, a supporting assembly and a clamping assembly, wherein the substrate is provided with a through hole, the measuring assembly is arranged at the top of the substrate close to the through hole, a detection area is formed around the through hole, and the measuring assembly is used for detecting parameters of a piece to be detected;

the support assembly is arranged at the bottom of the substrate and comprises a support plate, and the support plate is positioned right below the through hole and is used for supporting the piece to be tested; the supporting plate can move along the direction perpendicular to the substrate and approaching to or separating from the substrate, so that the to-be-detected piece penetrates through the through hole to be placed in the to-be-detected area;

the clamping assembly is arranged at the bottom of the base plate near the through hole and used for clamping the to-be-tested piece and placing the to-be-tested piece on the supporting plate.

2. The automatic calibration device for cigarette length circumference detection according to claim 1, wherein the measuring assembly comprises a first circumference measuring element, a second circumference measuring element, a first length measuring element and a second length measuring element, and the first circumference measuring element and the second circumference measuring element are oppositely arranged at two sides of the through hole; the first length measuring piece and the second length measuring piece are oppositely arranged at two sides of the through hole; and the first circumference measuring piece, the first length measuring piece, the second circumference measuring piece and the second length measuring piece are surrounded to form a detection area.

3. The automatic calibration device for cigarette length circumference detection according to claim 1, further comprising a clamping member provided on an inner wall surface of the through hole for clamping the piece to be measured.

4. The automatic calibration device for cigarette length circumference detection according to claim 1, wherein the support assembly further comprises a first guide rail, the first guide rail is vertically connected with the base plate, the support plate is connected with the first guide rail, and the support plate can slide along the extending direction of the first guide rail.

5. The automatic cigarette length circumference detection calibration device of claim 4, wherein the support assembly further comprises a first lead screw and a first lead screw nut, the first lead screw is parallel to the first guide rail, the first lead screw nut is in threaded connection with the first lead screw, the first lead screw nut is connected with the support plate, and the first lead screw rotates to drive the first lead screw nut and the support plate to move along the extending direction of the first lead screw.

6. The automatic cigarette length circumference detection calibration device of claim 5, wherein the support assembly further comprises a first drive motor, a drive shaft of the first drive motor being coupled to the first lead screw.

7. The automatic cigarette length circumference detection calibration device according to claim 1, wherein the clamping assembly comprises clamping jaws and a controller, wherein the controller is connected with the clamping jaws and is used for controlling clamping and loosening of the clamping jaws; and the clamping jaw can move towards or away from the supporting plate along a direction parallel to the substrate.

8. The automatic calibration device for cigarette length circumference detection according to claim 7, wherein the clamping assembly further comprises a second screw and a second screw nut, the second screw is parallel to the base plate and extends towards the direction of the support plate, the second screw nut is in threaded connection with the second screw, the clamping jaw is connected with the second screw nut, and the second screw nut and the clamping jaw are driven to move in the extending direction of the second screw in a rotating mode.

9. The automatic cigarette length circumference detection calibration device of claim 8, wherein the clamping assembly further comprises a second drive motor, a drive shaft of the second drive motor being connected to the second lead screw.

10. The automatic cigarette length circumference detection calibration device of claim 7, wherein the clamping assembly further comprises a displacement sensor for detecting a distance the jaws move.