An automatic light path adjustment module for a silo

Abstract

The present invention discloses a light path automatic adjustment module for a silo, which comprises a first plano-convex lens, a second plano-convex lens, a convex lens, a silo, a stopper, a driving assembly and a sliding assembly; one end face of the silo is provided with the first plano-convex lens, the other end face of the silo is provided with the convex lens, the stopper is arranged in the silo, the second plano-convex lens is installed on the stopper, the convex lens, the second plano-convex lens and the first plano-convex lens are aligned in sequence along the optical path direction, the sliding assembly is connected with the stopper to enable the stopper to slide reciprocally between the first plano-convex lens and the convex lens so as to adjust the size of the opening of the silo, a through hole is formed in one end face of the silo where the convex lens is installed, at least a part of the stopper is located in the through hole, and the output end of the driving assembly is connected with the sliding assembly. The beneficial effects are as follows: the automatic adjustment of the stopper is realized, so as to change the size of the light path, effectively improve the efficiency and reduce the human error rate.

Description

Technical Field

[0001] The present invention relates to the technical field of near-infrared spectroscopy detection, and particularly relates to an automatic adjustment module for the optical path of a silo. Background Art

[0002] When using an existing near-infrared spectroscopy analyzer to detect crops, due to the different individual volumes of the crops, when feeding into the same channel, the density is different and the light transmittance is also different. Therefore, it is necessary to change the width of the silo channel according to different test samples, adjust the optical path length passing through the test samples, and keep the light transmittance consistent. The prior art mainly realizes the adjustment of the optical path by manual adjustment. When detecting different samples, the tester selects blocks with different thicknesses according to the samples to be detected and installs them at the feed inlet, so as to change the thickness dimension of the feed inlet and ensure the optical path required by the samples.

[0003] Because different crops require different optical paths, when adding blocks, it is necessary to prepare many blocks with different thicknesses in advance, resulting in material accumulation. At the same time, since the tester needs to select corresponding blocks according to different test samples, it takes a long time and is also easy to select the wrong block. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide an automatic adjustment module for the optical path of a silo with a simple and reasonable structure, which can automatically adjust the thickness of the feed inlet of the instrument.

[0005] The purpose of the present invention is achieved by the following technical solutions: an automatic adjustment module for the optical path of a silo, including a first plano-convex lens, a second plano-convex lens, a convex lens, a silo, a block, a driving component and a sliding component; a first plano-convex lens is installed on one end face of the silo, a convex lens is installed on the other end face of the silo, the block is arranged in the silo, the second plano-convex lens is installed on the block, the convex lens, the second plano-convex lens and the first plano-convex lens are concentrically arranged in sequence along the optical path direction, the sliding component is connected with the block to enable the block to slide reciprocally between the first plano-convex lens and the convex lens, a through hole is opened on the end face of the silo where the convex lens is installed, and at least a part of the block is located in the through hole, and the output end of the driving component is connected with the sliding component.

[0006] Further, the block includes a baffle, a top plate and a bottom plate; one end of the top plate is connected to the top end of the baffle, one end of the bottom plate is connected to the bottom end of the baffle, the other ends of the top plate and the bottom plate both extend in a direction away from the baffle, an inclined slope is opened at the top end of the baffle, a lens hole is opened on the baffle, the second plano-convex lens is installed in the lens hole, and the top plate and the bottom plate are respectively located in the through hole.

[0007] Further, the lengths of the top plate and the bottom plate are greater than the displacement of the block movement.

[0008] Further, the sliding assembly includes a guide rail, a slider, and a guide plate; the guide rail is arranged along the optical path direction, the slider is slidably mounted on the guide rail, a sliding hole is formed in a side surface of the magazine close to the guide rail along the optical path direction, the guide plate is slidably mounted in the sliding hole, one side surface of the guide plate is connected to the slider, the other side surface of the guide plate is connected to the stopper, and the driving assembly is connected to the slider.

[0009] Further, the cross section of the guide plate is in a convex shape or a wedge shape, and the length of the guide plate is greater than the length of the sliding hole.

[0010] Further, it further includes a slider connection plate, the slider connection plate is mounted on the slider, one side surface of the slider connection plate is connected to the driving assembly, and the other side surface of the slider connection plate is connected to the guide plate.

[0011] Further, the driving assembly includes a motor, a lead screw, and a lead screw nut; the lead screw is arranged along the optical path direction, an output end of the motor is connected to the lead screw, the lead screw nut is mounted on the lead screw, and the sliding assembly is connected to the lead screw nut.

[0012] Further, it further includes a lead screw connection plate, and the lead screw connection plate is respectively connected to the sliding assembly and the lead screw nut.

[0013] Further, it further includes a support assembly; the support assembly includes a guide rail mounting plate, a mounting large plate, and a support plate; the mounting large plate is fixed to the outer periphery of the magazine, the support plate is fixed to the mounting large plate, one end of the guide rail mounting plate is connected to the magazine, the other end of the guide rail mounting plate is connected to the support plate, the sliding assembly is mounted on the guide rail mounting plate, and the driving assembly is mounted on the support plate.

[0014] Further, it further includes an inductor and an induction piece; the inductor is mounted on the guide rail mounting plate, the mounting position of the inductor is matched with the origin of the stopper, and the induction piece is mounted on the driving assembly and is matched with the inductor.

[0015] Further, the magazine includes a first magazine plate, a second magazine plate, and a third magazine plate; the first magazine plate is connected to the second magazine plate to enclose a magazine channel with two open ends, the first plano lens is mounted on the first magazine plate, the convex lens is mounted on the second magazine plate, the convex lens and the first plano lens are concentrically arranged along the optical path direction, a through hole is formed in the second magazine plate, the third magazine plate is mounted on the upper ends of the first magazine plate and the second magazine plate, and a sliding hole is formed between the third magazine plate and the first magazine plate.

[0016] The present invention has the following advantages over the prior art:

[0017] 1. In the present invention, by setting a driving component and a sliding component, the stopper can be driven to move in the bin, changing the optical path length and realizing the automatic adjustment of the optical path length. Compared with the prior art, there is no need to prepare shims of different thicknesses, reducing the accumulation and storage of materials, effectively reducing the time for inspectors to select shims according to samples, improving efficiency; at the same time, effectively avoiding a series of problems caused by the wrong selection of shims by inspectors, improving accuracy.

[0018] 2. In the present invention, by setting the installation position of the sensor and setting the origin of the stopper at the minimum optical path length, problems caused when the inspector does not operate according to the normal working process are effectively avoided, and there is no need to manually take out the sample and start over. A slope is designed above the stopper in the present invention. After the sample inspection is completed, the motor drives the stopper to move to the farthest end and then return to the origin, without manual cleaning of the remaining material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 shows a schematic structural diagram of the automatic optical path adjustment module of the bin according to the present invention;

[0021] Figure 2 shows a schematic structural diagram of the connection between the driving component and the sliding component and the stopper according to the present invention;

[0022] Figure 3 shows a schematic structural diagram of the stopper according to the present invention;

[0023] Figure 4 shows a schematic structural diagram of the bin at a first angle according to the present invention;

[0024] Figure 5 shows a schematic structural diagram of the bin at a second angle according to the present invention;

[0025] In the figures, 1 is the first plano-convex lens; 2 is the second plano-convex lens; 3 is the convex lens; 4 is the bin; 5 is the stopper; 6 is the through hole; 7 is the baffle; 8 is the top plate; 9 is the bottom plate; 10 is the guide rail; 11 is the slider; 12 is the guide plate; 13 is the slider connecting plate; 14 is the motor; 15 is the lead screw; 16 is the lead screw nut; 17 is the lead screw connecting plate; 18 is the guide rail mounting plate; 19 is the mounting large plate; 20 is the support plate; 21 is the sensor; 22 is the sensing piece; 23 is the first bin plate; 24 is the second bin plate; 25 is the third bin plate; 26 is the sliding hole; 27 is the slope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Embodiment:

[0028] As Figure 1 and Figure 2 shown, the optical path automatic adjustment module of the silo includes a first plano-convex lens 1, a second plano-convex lens 2, a convex lens 3, a silo 4, a stopper 5, a driving component, and a sliding component; a first plano-convex lens 1 is installed on one end face of the silo 4, a convex lens 3 is installed on the other end face of the silo 4, the stopper 5 is arranged in the silo 4, the second plano-convex lens 2 is installed on the stopper 5, the convex lens 3, the second plano-convex lens 2, and the first plano-convex lens 1 are installed coaxially in the optical path direction in sequence, the sliding component is connected to the stopper 5 to enable the stopper 5 to slide reciprocally between the first plano-convex lens 1 and the convex lens 3, a through hole 6 is opened on the end face of the silo 4 where the convex lens 3 is installed, at least a part of the stopper 5 penetrates into the through hole 6, and the output end of the driving component is connected to the sliding component. The driving component drives the sliding component to reciprocate in the optical path direction to drive the stopper to reciprocally move in the optical path direction, change the width of the silo channel, adjust the optical path size, and achieve the optical path required for detecting different crops. When the stopper 5 reciprocally moves, it will pass through the through hole 6 of the silo 4. While adjusting the width of the silo 4 channel, it also prevents the stopper 5 from falling. The optical path direction in this article refers to the direction along the convex lens 3, the second plano-convex lens 2 to the first plano-convex lens 1.

[0029] As Figure 3 shown, the stopper 5 includes a baffle 7, a top plate 8, and a bottom plate 9; one end of the top plate 8 is connected to the top end of the baffle 7, one end of the bottom plate 9 is connected to the bottom end of the baffle 7, the other ends of the top plate 8 and the bottom plate 9 both extend in a direction away from the baffle 7, an inclined downward slope 27 is opened at the top end of the baffle 7, a lens hole is opened on the baffle 7, and the second plano-convex lens 2 is installed in the lens hole. The top plate 8 and the bottom plate 9 are both located in the through hole 6. The stopper 5 is integrally in a U shape. When the stopper 5 reciprocates in the optical path direction, the top plate 8 and the bottom plate 9 will respectively pass through the corresponding through holes 6. Since the position where the stopper 5 moves is different when detecting different samples, it will cause the top plate 8 of the stopper 5 to easily accumulate samples. By setting the slope 27, after each sample detection is completed, the motor 14 rotates to move the stopper 5 to the farthest end (at this time, the top plate 8 and the bottom plate 9 pass through the through hole 6, and the silo channel is the widest), and the slope 27 of the stopper 5 contacts the inner wall of the silo, and the materials accumulated on the top plate automatically fall off.

[0030] The lengths of the top plate 8 and the bottom plate 9 are greater than the displacement of the movement of the stopper 5. Through this setting, when the stopper 5 moves towards the first plano-lens 1 and when the distance between the first plano-lens 1 and the second plano-lens 2 is the smallest, the other ends of the top plate 8 and the bottom plate 9 are still located in the through hole 6, thereby preventing the stopper 5 from falling into the bin and ensuring the smoothness of the reciprocating movement of the stopper 5.

[0031] As Figure 1 and Figure 2 shown, it further includes a support assembly; the support assembly includes a guide rail mounting plate 18, a mounting large plate 19 and a support plate 20; the mounting large plate 19 is fixed to the outer periphery of the bin 4, the support plate 20 is fixed to the mounting large plate 19 and is arranged at an interval from the bin 4, one end of the guide rail mounting plate 18 is connected to the bin 4, the other end of the guide rail mounting plate 18 is connected to the support plate 20, the guide rail 10 in the sliding assembly is mounted on the guide rail mounting plate 18, and the motor 14 in the driving assembly is mounted on the support plate 20 through a motor mounting plate.

[0032] It further includes a sensor 21 and an induction sheet 22; the sensor 21 is mounted on the guide rail mounting plate 18, the sensor 21 is located at the tail end of the lead screw, and its mounting position of the sensor 21 is matched with the origin of the stopper, and the induction sheet 22 is mounted on the lead screw nut 16. During operation, the induction sheet 22 moves along with the lead screw nut 16. When the induction sheet 22 contacts the sensor 21, the lead screw stops moving, and at this time, the stopper 5 reaches the origin position of the stopper (the origin position of the stopper is the position where the optical path required for various test samples is the smallest, that is, when the bin channel is the narrowest).

[0033] The sliding assembly includes a guide rail 10, a slider 11 and a guide plate 12; the guide rail 10 is mounted on the guide rail mounting plate 18 along the optical path direction, the slider is slidably mounted on the guide rail 10, a sliding hole 26 is opened in one side surface of the bin 4 close to the guide rail 110 along the optical path direction, the guide plate 12 is slidably mounted in the sliding hole 26, one side surface of the guide plate 12 is connected to the slider 11, the other side surface of the guide plate 12 is connected to the stopper 5, and when the lead screw nut 16 in the driving assembly is connected to the slider 11 and the guide plate 12 cooperates with the sliding hole 26 of the bin, it plays a guiding role.

[0034] The upper end surface of the slider 11 further includes a slider connecting plate 13, the slider connecting plate 13 is mounted on the slider 11, one side surface of the slider connecting plate 13 is connected to the lead screw nut 16 in the driving assembly, and the other side surface of it is connected to the guide plate 12. By providing the slider connecting plate 13, the slider 11, the lead screw nut 16 and the guide plate 12 can be connected, which is convenient for transmission and improves the structural stability.

[0035] The cross-section of the guide plate 12 is convex or wedge-shaped, and the cross-sectional shape of the sliding hole 26 matches that of the guide plate 12. With this setting, the connection gap caused by assembly errors and machining errors can be reduced, and the dust-proof effect can be improved. This enables the guide plate 12 to slide stably in the sliding hole 26 and prevents it from falling off. The length of the guide plate 12 is greater than that of the sliding hole 26. With this setting, the guide plate 12 can be prevented from slipping out of the sliding hole 26, ensuring the stability of this optical path adjustment module.

[0036] The drive assembly includes a motor 14, a lead screw 15, and a lead screw nut 16; the motor 14 is mounted on the support plate 20 through a motor mounting plate. The lead screw 15 is arranged along the optical path direction, the output end of the motor is connected to the lead screw 15, the lead screw nut 16 is mounted on the lead screw 15, and the slider 11 in the sliding assembly is connected to the lead screw nut 16 through a slider connection plate 13. A lead screw connection plate 17 can also be provided to facilitate the connection between the slider 11 or the slider connection plate 13 and the lead screw nut 16. When the motor 14 works, it drives the lead screw 15 to rotate, and the lead screw nut 16 reciprocates along the lead screw 15 (i.e., reciprocates along the optical path direction), thereby driving the slider 11, the guide plate 12, and the stopper 5 to reciprocate along the optical path direction, realizing automatic adjustment of the optical path.

[0037] As Figures 4 - 5 shown, the material bin 4 includes a first bin plate 23, a second bin plate 24, and a third bin plate 25; the first bin plate 23 is connected to the second bin plate 24 to enclose a bin channel with openings at both ends. The first plano-convex lens 1 is mounted on the first bin plate 23, the convex lens 3 is mounted on the second bin plate 24, the convex lens 3 and the first plano-convex lens 1 are concentrically arranged along the optical path direction. The second bin plate 24 is provided with two upper and lower through holes 6, and the top plate 8 and the bottom plate 9 of the stopper 5 are respectively located in the corresponding through holes 6. The third bin plate 25 is mounted on the upper ends of the first bin plate 23 and the second bin plate 24, and there is a sliding hole 26 between the third bin plate 25 and the first bin plate 23. By dividing the material bin 4 into three parts, it is convenient for assembly.

[0038] During specific use:

[0039] This automatic optical path adjustment module for the silo is installed in an existing near-infrared spectrometer. The tester inputs the sample to be tested into the instrument. The instrument controls the operation of motor 14 according to the sample to be tested input by the tester, moves the stopper 5 located at the origin position of the stopper to the corresponding position, and the instrument starts to test the sample. After the sample test is completed, the instrument controls the rotation of motor 14, moves the stopper 5 to the far end, so as to push the sample accumulated on the stopper 5 into the silo. Subsequently, the stopper 5 returns to the material blocking origin position and waits for the next test. This application realizes automatic optical path adjustment by controlling the operation of the motor, can effectively improve work efficiency, the accuracy of sample detection, reduce the accumulation of materials, and reduce the problems caused by the mistakes of the tester. In this invention, there is a slider origin, which is set at the place where the optical path required for various test samples is the smallest (the narrowest part of the silo channel), which can effectively avoid the problem that the stopper 5 cannot move caused by the tester not working according to the process, that is, putting the sample first and then inputting the sample to be tested on the instrument. In this invention, there is also a slope 27 at the upper end of the stopper 5. Since the position of the stopper 5 moves differently when testing different samples, it is easy to accumulate samples above the top plate 8. After setting the slope 27, every time after the sample test is completed and the motor 14 rotates to move the stopper 5 to the farthest end, the top plate 8 contacts the inner wall of the silo, and the materials accumulated on the top plate 8 automatically fall off.

[0040] The above specific implementation manners are the preferred embodiments of the present invention and cannot limit the present invention. Any other changes or other equivalent replacement methods made without departing from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. An automatic optical path adjustment module for a silo, characterized in that: It includes a first plano-lens, a second plano-lens, a convex lens, a silo, a stopper, a driving assembly and a sliding assembly; one end face of the silo is installed with the first plano-lens, the other end face of the silo is installed with the convex lens, the stopper is arranged in the silo, the second plano-lens is installed on the stopper, the convex lens, the second plano-lens and the first plano-lens are concentrically arranged in sequence along the optical path direction, the sliding assembly is connected with the stopper to make the stopper slide reciprocally between the first plano-lens and the convex lens, a through hole is opened on the end face of the silo where the convex lens is installed, at least a part of the stopper is located in the through hole, and the output end of the driving assembly is connected with the sliding assembly; The stopper includes a baffle plate, a top plate and a bottom plate; one end of the top plate is connected with the top end of the baffle plate, one end of the bottom plate is connected with the bottom end of the baffle plate, the other ends of the top plate and the bottom plate both extend towards the direction away from the baffle plate, an inclined slope is opened at the top end of the baffle plate, a lens hole is opened on the baffle plate, the second plano-lens is installed in the lens hole, and the top plate and the bottom plate are respectively located in the through hole; The whole stopper is in a U shape; the lengths of the top plate and the bottom plate are greater than the displacement of the stopper movement; The silo includes a first silo plate, a second silo plate and a third silo plate; the first silo plate is connected with the second silo plate to enclose a silo channel with two open ends; After each detection of the sample is completed, the motor rotates. When the stopper is moved to the farthest end, the top plate contacts the inner wall of the silo, and the materials piled on the top plate automatically fall off.

2. The optical path automatic adjustment module of the silo according to claim 1, characterized in that: The sliding assembly includes a guide rail, a slider and a guide plate; the guide rail is arranged along the optical path direction, the slider is slidably installed on the guide rail, a sliding hole is opened on one side surface of the silo close to the guide rail along the optical path direction, the guide plate is slidably installed in the sliding hole, one side surface of the guide plate is connected with the slider, the other side surface of the guide plate is connected with the stopper, and the driving assembly is connected with the slider.

3. The optical path automatic adjustment module of the silo according to claim 2, wherein: The cross section of the guide plate is in a convex shape or a wedge shape, and the length of the guide plate is greater than the length of the sliding hole.

4. The optical path automatic adjustment module of the silo according to claim 2, wherein: It also includes a slider connecting plate, the slider connecting plate is installed on the slider, one side surface of the slider connecting plate is connected with the driving assembly, and the other side surface of it is connected with the guide plate.

5. The optical path automatic adjustment module of the silo according to claim 1, wherein: The driving assembly includes a motor, a lead screw and a lead screw nut; the lead screw is arranged along the optical path direction, the output end of the motor is connected with the lead screw, the lead screw nut is installed on the lead screw, and the sliding assembly is connected with the lead screw nut.

6. The optical path automatic adjustment module of the silo according to claim 1, wherein: It also includes a support assembly; the support assembly includes a guide rail mounting plate, a mounting large plate and a support plate; the mounting large plate is fixed on the outer periphery of the silo, the support plate is fixed on the mounting large plate, one end of the guide rail mounting plate is connected with the silo, the other end of the guide rail mounting plate is connected with the support plate, the sliding assembly is installed on the guide rail mounting plate, and the driving assembly is installed on the support plate.

7. The optical path automatic adjustment module of the silo according to claim 6, characterized in that: It also includes a sensor and an induction piece; the sensor is installed on the guide rail mounting plate, the installation position of the sensor is matched with the origin of the stopper, the induction piece is installed on the driving assembly and is matched with the sensor.

8. The optical path automatic adjustment module of the silo according to claim 2, wherein: The first plano lens is mounted on the first bin plate, the convex lens is mounted on the second bin plate, the convex lens and the first plano lens are concentrically arranged along the optical path direction, the second bin plate is provided with a through hole, the third bin plate is mounted on the upper ends of the first bin plate and the second bin plate, and a sliding hole is provided between the third bin plate and the first bin plate.

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