CN211587775U - Device for preventing light path is sheltered from and detection module for cigarette production line - Google Patents
Device for preventing light path is sheltered from and detection module for cigarette production line Download PDFInfo
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- CN211587775U CN211587775U CN201921845130.XU CN201921845130U CN211587775U CN 211587775 U CN211587775 U CN 211587775U CN 201921845130 U CN201921845130 U CN 201921845130U CN 211587775 U CN211587775 U CN 211587775U
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Abstract
A device for preventing a light path from being blocked and a detection module for a cigarette production line are provided. The device comprises a dust remover and a light-transmitting plate which is hermetically connected with the dust remover and can be penetrated by a light path; the dust remover is provided with a front side surface, a back side surface and a peripheral side surface, wherein the front side surface and the back side surface are opposite, and the peripheral side surface is connected between the front side surface and the back side surface; the light-transmitting plate is fixed on the back side surface of the dust remover; the peripheral side of the dust remover is provided with an air inlet hole used for being connected with external air supply equipment; the back side surface of the dust remover is provided with an air guide channel communicated with the air inlet hole and used for guiding the air flowing in from the air inlet hole to the light-transmitting plate; the middle part of the dust remover is provided with an air outlet hole which penetrates through the front side surface and the back side surface, and the air outlet hole is communicated with the air guide channel and used for discharging air out of the dust remover. The device can be automatic, timely clearance detect the shielding thing on the light path to ensure that the light path that detects is unobstructed, effectively avoid the production of wrong detected signal, reduced the manpower consumption.
Description
Technical Field
The utility model relates to a tobacco production technical field, concretely relates to prevent that light path from being sheltered from device and detection module for cigarette production line.
Background
The cigarette throwing production line is usually provided with a detection element which comprises an inductive switch, a photoelectric tube and the like so as to realize automatic control of equipment, display of the running condition of the equipment, prompt of equipment failure alarm and other automatic functions.
In the tobacco production equipment, a photoelectric tube is widely used as an important detection element, such as the detection of a material empty and full signal of a storage cabinet, the detection of high and low positions of a material level of a limiting tube, the detection of materials at a material outlet of the equipment and the like. The photoelectric tube realizes the detection of material signals through the transparent plates arranged at the equipment parts. The detection signal of the photoelectric tube is directly involved in the starting and stopping of the upstream or downstream equipment.
However, the tobacco leaves, the tobacco shreds and the smoke dust in the tobacco shred production line are easily stuck on the inner side of the transparent plate due to large water vapor and smoke dust in the tobacco leaves and the tobacco shreds, and error detection signals are generated. In order to ensure that the photoelectric tube can work normally, the shielding object which is abnormally stuck in the transparent plate needs to be manually and timely cleaned, and the workload of an operator is increased. When abnormal shielding occurs, if an operator does not find the abnormal shielding in time, the production is stopped to cut off the flow or wrong equipment state occurs, and the continuous production is influenced.
Compressed air is mainly adopted in the industry at present to directly blow the inner side of the transparent plate, the blowing area is limited, the effect is poor, tobacco leaves and tobacco shreds are easily hung on the compressed air pipe or the spray head on the inner side, and the tobacco leaves and the tobacco shreds on the upper side are easily mixed into the tobacco leaves and the tobacco shreds after the inner side of the pipeline or the spray head is damaged, so that sundries are mixed into tobacco products. Or a scraper type structure is adopted, the material of the scraper is aged, and the material is easy to mix into tobacco leaves of tobacco shreds, so that impurities in the tobacco products are mixed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a prevent that light path is sheltered from device is provided, the device can be automatic, timely clearance detects the shelter from the thing on the light path to ensure that the detection light path is unobstructed, effectively avoid the production of wrong detected signal, reduced manpower consumption.
The utility model aims to solve another technical problem that a detection module for cigarette production line is provided, through adopting detection module in process of production, is stained with and glues shelters from things such as tobacco leaf, pipe tobacco or smoke and dust inboard at the light-passing board and can be by timely clearance, prevents that the photoelectric tube from being sheltered from by unusual, produces wrong detected signal.
In order to solve the technical problem, the technical solution adopted by the present invention is to provide a device for preventing the light path from being blocked, wherein the device comprises a dust remover and a light-transmitting plate which is hermetically connected with the dust remover and can allow the light path to pass through; the dust remover is provided with a front side surface, a back side surface and a peripheral side surface, wherein the front side surface and the back side surface are opposite, and the peripheral side surface is connected between the front side surface and the back side surface; the light-transmitting plate is fixed on the back side surface of the dust remover; the peripheral side of the dust remover is provided with an air inlet hole used for being connected with external air supply equipment; the back side surface of the dust remover is provided with an air guide channel communicated with the air inlet hole and used for guiding the air flowing in from the air inlet hole to the light-transmitting plate; and the middle part of the dust remover is provided with an air outlet hole which penetrates through the front side surface and the back side surface, and the air outlet hole is communicated with the air guide channel and is used for discharging air out of the dust remover.
As the utility model discloses a prevent that light path is by the improvement of the device that shelters from, the device is still including locating the dust remover with sealed pad between the light-passing board, sealed pad respectively with the dust remover with light-passing board sealing connection, sealed middle part be equipped with the perforating hole that the venthole of dust remover corresponds.
As an improvement of the device of the present invention, the air outlet is in the shape of a truncated cone, and the inner diameter of the air outlet is smaller toward the front side than the back side.
As an improvement of the device for preventing the light path from being blocked, the air guide channel comprises an annular groove and an air blowing groove which are formed on the back side surface of the dust remover; the annular groove surrounds the air outlet; the air blowing groove is provided with an air inlet notch communicated with the annular groove and an air outlet notch communicated with the air outlet hole.
As the utility model discloses a prevent that light path is by the improvement of the device that shelters from, the plane at the diapire place of gas blow groove with the plane at the dorsal surface place of dust remover has the contained angle, the diapire of gas blow groove with the interval of the dorsal surface of dust remover along the notch orientation of admitting air the direction of the notch of giving vent to anger reduces gradually.
As the utility model discloses a prevent that light path is by the improvement of the device that shelters from, the groove width of annular groove with the aperture of inlet port is the same.
As the improvement of the device for preventing the light path from being blocked, the air guide channel comprises a plurality of air blowing grooves which surround the air outlet and are arranged at equal intervals.
As an improvement of the device for preventing the light path from being blocked, the air blowing groove is followed the one end of the air inlet notch is directional the direction of one end of the air outlet notch and the radial direction of the air outlet hole has a included angle.
For solving another technical problem, the utility model provides a detection module for cigarette production line, detection module includes the photoelectric cell and is used for keeping apart the transparent glass of photoelectric cell and the material that awaits measuring, simultaneously, detection module still includes as above prevent that the light path is sheltered from the device, the device the dust remover is fixed transparent glass's orientation one side of photoelectric cell, wear to be equipped with the aperture on the transparent glass with the air vent that the venthole matches, the air vent with the venthole aligns.
As an improvement of the detection module of the present invention, the air outlet of the device is in the shape of a truncated cone, and the inner diameter of the air outlet gradually decreases along the front side surface toward the back side surface; the aperture of the vent hole on the transparent glass is consistent with the maximum aperture of the air outlet hole.
Implement the utility model provides a device that prevents that light path from being sheltered from and detection module for cigarette production line can reach following beneficial effect:
1. the device for preventing the light path from being sheltered from passes through after the inlet port communicates with the air feeder of outside, can realize automatic, in time clearance the orientation of light-passing board the shelter on dust remover one side to ensure that the detection light path is unobstructed, effectively avoid the production of wrong detection signal. And the cleaning of the shielding object is not carried out by the bare hands of operators, so that the labor consumption is reduced.
2. By adopting the detection module for the cigarette production line, in the production process, the shielding objects such as tobacco leaves, tobacco shreds or smoke dust adhered to the inner side of the light-transmitting plate can be cleaned in time, so that the photoelectric tube is prevented from being shielded abnormally and generating wrong detection signals. Secondly, the cleaning of shelters does not need the manual implementation of operator, reduces labour's consumption and the probability that other foreign matters got into the production line. In addition, the device used for cleaning the shielding object of the detection module is arranged on one side of the transparent glass, which is far away from the material to be detected, so that the possibility that sundries are mixed into tobacco leaves, cut tobacco and the like is further reduced.
Drawings
Fig. 1 is a schematic rear side elevational view of a dust collector in an apparatus according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a dust collector in an apparatus according to an embodiment of the present invention;
fig. 3 is a schematic front view of a sealing gasket in an apparatus according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of a gasket in an apparatus according to an embodiment of the present invention;
fig. 5 is a front view of a light-transmitting plate in an apparatus according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a light-transmitting plate in an apparatus according to a first embodiment of the present invention;
fig. 7 is a cross-sectional view of a device according to a first embodiment of the present invention, in which stainless steel pan head bolts are omitted;
fig. 8 is a reference diagram of a use state of the device according to the first embodiment of the present invention, in which the stainless steel pan head bolt and the stainless steel countersunk head bolt are omitted.
The reference numerals in the detailed description illustrate:
| |
1 | |
2 |
| Light-transmitting |
3 | |
114 |
| |
111 | |
113 |
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11 | |
14 |
| |
12 | |
13 |
| |
131 | |
132 |
| |
141 | First mounting through |
112 |
| Second mounting through |
22 | Third mounting through |
32 |
| Through |
23 | |
133 |
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4 | Locating |
42 |
| |
41 |
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
The present embodiment provides an apparatus for preventing an optical path from being blocked.
It should be noted that the device that this embodiment designed is mainly in order to solve in the present cigarette manufacture throwing production line, and many equipment are installed the photoelectric cell and are carried out the material condition and detect, but use a period of time after the photoelectric cell will be sheltered from by the material, lead to the photoelectric cell to send unusual or the problem that the normal operation of production line is influenced to the error signal.
Referring to fig. 7, the device includes a dust remover 1 and a light-transmitting plate 3 which is hermetically connected with the dust remover 1 and can be penetrated by a light path; the dust remover 1 is provided with a front side surface 114, a back side surface 111 and a peripheral side surface 113 connected between the front side surface 114 and the back side surface 111; the light-transmitting plate 3 is fixed on the back side 111 of the dust remover 1; an air inlet 11 used for being connected with external air supply equipment is arranged on the peripheral side surface 113 of the dust remover 1; the back side 111 of the dust collector 1 is provided with an air guide channel communicated with the air inlet 11, and is used for guiding the air flowing in from the air inlet 11 onto the light-transmitting plate 3; the middle part of the dust remover 1 is provided with an air outlet 14 which penetrates through the front side surface 114 and the back side surface 111, and the air outlet 14 is communicated with the air guide channel and used for discharging air out of the dust remover 1.
In the present embodiment, referring to fig. 1 and 2, the dust remover 1 is a flat circular plate-shaped structure made of stainless steel. The front side 114 and the back side 111 of the dust catcher 1 are both circular, and the peripheral side 113 is a cylindrical surface. The air intake holes 11 are circular and extend inwards from the peripheral side surface 113; the central axis of the air outlet 14 is coaxial with the central axis of the dust remover 1 and is arranged in the center of the dust remover 1; the air outlet hole 14 is communicated with the air inlet hole 11 through the air guide passage.
Specifically, the air guide channel comprises an annular groove 12 and an air blowing groove 13 which are formed on the back side surface 111 of the dust remover 1; the annular groove 12 surrounds the air outlet; the air blowing groove 13 is provided with an air inlet notch 131 communicated with the annular groove 12 and an air outlet notch 132 communicated with the air outlet hole 14; the groove width of the annular groove 12 is the same as the aperture of the air inlet 11. Obviously, the gas entering from the gas inlet hole 11 flows through the annular groove 12 and the blowing groove in sequence and then is discharged from the gas outlet. Thus, the annular groove 12 serves as an air storage cavity for compressed air, the compressed air input from the air inlet 11 stores air in the air storage cavity, and the compressed air is blown out from the air blowing groove 13.
Specifically, an included angle is formed between a plane where the bottom wall 133 of the air blowing groove 13 is located and a plane where the back side 111 of the dust remover 1 is located, and the distance between the bottom wall 133 of the air blowing groove 13 and the back side 111 of the dust remover 1 gradually decreases along the direction from the air inlet notch 131 to the air outlet notch 132. Therefore, the air blowing grooves 13 can guide air flow to the light-transmitting plate 3, so that air entering from the air inlet holes 11 can be blown to the light-transmitting plate 3, and sticky matters on the light-transmitting plate 3 can be blown completely. Secondly, the inclined setting like this of the diapire 133 of the gas blowing groove 13 makes the gas blowing groove 13 is similar to a loudspeaker, and gas advances from the macrostoma and osculum goes out, makes certainly the gas flow rate that the notch 132 of giving vent to anger of gas blowing groove 13 bleeds further promotes, and it is right to strengthen the air current the clean dynamics of light-passing board 3.
Specifically, the dust collector 1 further has 4 first mounting through holes 112 arranged around the air outlet 14.
In this embodiment, referring to fig. 5 and 6, the light-transmitting plate 3 is a flat circular plate-shaped structure similar to the dust collector 1, and is made of transparent organic glass material for transmitting light signals of the phototube. The outer diameter of the light-transmitting plate 3 is the same as the outer diameter of the dust collector 1, and the light-transmitting plate 3 is provided with 4 third mounting through holes 32 arranged around the central axis of the light-transmitting plate 3. The third mounting through-hole 32 has a diameter identical to that of the first mounting through-hole 112.
In this embodiment, the light-transmitting plate 3 and the dust remover 1 are connected into a whole by 4 stainless steel pan head bolts. The four stainless steel pan head bolts respectively penetrate through the four third mounting through holes 32 of the light-transmitting plate 3 and the four first mounting through holes 112 of the dust remover 1 in sequence, so that the light-transmitting plate 3 and the dust remover 1 are combined together.
The device after being combined into a whole needs to be installed on the original transparent glass 4 of the corresponding device of the photoelectric tube for use. In the installation process, the original transparent glass 4 needs to be punched: 4 positioning holes 42 with the same diameter as the first mounting through holes 112, wherein the fixing holes are in the shape of truncated cones; 1 vent hole 41 with the same diameter as the vent hole 14. Then, 4 stainless steel countersunk bolts with matched diameters are selected, and the 4 stainless steel countersunk bolts respectively penetrate through the 4 positioning holes 42 of the original transparent glass 4 and are screwed into the 4 first mounting through holes 112 of the dust remover 1, so that the whole device is fixed on the original transparent glass 4, and the air vent 41 is required to be aligned with the air outlet 14 (see fig. 8). Finally, the light column of the photoelectric tube is adjusted to be consistent with the central line of the air outlet hole 14 of the device.
After the device is installed and fixed, a compressed air pipe is connected to the air inlet 11 to provide an air source (namely, an external air supply device), and the on-off of the air source is controlled by a two-way electromagnetic valve. The two-way electromagnetic valve is connected with an output point of the digital output module, and the signal output of the digital output module is controlled by programming a PLC program, so that the on-off of the two-way electromagnetic valve is controlled. So realize, when the device be stained with on the light-passing board 3 and glue the foreign matter and reach the certain duration after, the device can clean the jetting automatically, and until will shelter from the thing jetting totally, guarantee can normally propagate the phototube light signal.
In summary, after the device for preventing the light path from being blocked is communicated with the external air supply device through the air inlet 11, the blocking object on one side of the dust remover 1 facing the light-transmitting plate 3 can be automatically and timely cleaned, so that the smoothness of the detection light path is ensured, and the generation of false detection signals is effectively avoided. And the cleaning of the shielding object is not carried out by the bare hands of operators, so that the labor consumption is reduced.
Further, the air outlet 14 has a frustum shape, and the inner diameter of the air outlet 14 gradually decreases along the front side surface 114 toward the back side surface 111. After the device is installed on the original transparent glass 4 on the corresponding device of the photoelectric tube, the aperture of one side of the air outlet 14 facing the material to be detected is larger, that is, the inner wall 141 of the air outlet 14 inclines downwards towards one side of the material to be detected, so that the inner wall 141 of the air outlet 14 is prevented from accumulating smoke, and meanwhile, the air flow with tobacco leaves and smoke dust is blown outwards.
Further, refer to fig. 3 and 4, the device is still including locating dust remover 1 with sealed pad 2 between the light-passing board 3, sealed pad 2 respectively with dust remover 1 with light-passing board 3 sealing connection, the middle part that seals up 2 be equipped with the perforating hole 23 that the venthole 14 of dust remover 1 corresponds. Specifically, the aperture of the through hole 23 is equal to the minimum aperture of the air outlet 14. The sealing gasket 2 is also provided with 4 second mounting through holes 22 surrounding the through holes 23, and the aperture of the second mounting through holes 22 is consistent with that of the first mounting through holes 112. In the installation, four stainless steel pan head bolts pass through four of light-passing board 3 respectively in proper order the third installation through-hole 32, four of sealed pad 2 the second installation through-hole 22 with four of dust remover 1 first installation through-hole 112 makes light-passing board 3 sealed pad 2 with dust remover 1 combines together.
Further, the air guide channel comprises a plurality of air blowing grooves 13 which surround the air outlet and are arranged at equal intervals, and an included angle is formed between the direction of one end of the air inlet notch 131 pointing to one end of the air outlet notch 132 and the radial direction of the air outlet 14 of the air blowing grooves 13. Specifically, the number of the air blowing grooves 13 is 8, so that 8 air flows blown out from the air blowing grooves 13 form whirlwind on the surface of the light-transmitting plate 3, and the whole windward side of the light-transmitting plate 3 is cleaned by the air flows.
Compared with the prior art, the device provided by the embodiment can achieve the following advantages:
1. the tobacco leaves, tobacco shreds, smoke dust and other shielding objects stuck on the light-transmitting plate 3 can be cleaned in time, so that the photoelectric tube is prevented from being shielded abnormally, wrong detection signals are avoided, and continuous production is guaranteed.
2. The automatic blowing can be realized through program control, manual cleaning is not needed, and the workload of operators is reduced.
3. The device has the advantages of simple structure, reliable installation and fixation, convenient and effective use, common materials adopted by all the parts, and low cost.
4. The installation mode of the device can prevent the components from mixing into tobacco leaves and tobacco shreds, and prevent impurities from mixing into tobacco products.
Example two
The embodiment provides a detection module for cigarette production line.
The detection module comprises a photoelectric tube and transparent glass 4 used for isolating the photoelectric tube from a material to be detected, and meanwhile, the detection module further comprises a device provided by the first embodiment for preventing a light path from being blocked, the dust remover 1 of the device is fixed on one side, facing the photoelectric tube, of the transparent glass 4, a vent hole 41 with the aperture matched with the air outlet hole 14 is arranged in the transparent glass 4 in a penetrating mode, and the vent hole 41 is aligned with the air outlet hole 14. The aperture of the vent hole 41 on the transparent glass 4 is consistent with the maximum aperture of the air outlet 14, and 4 positioning holes 42 which are consistent with the aperture of the first mounting through hole 112 and surround the vent hole 41 are further arranged on the transparent glass 4. A compressed air pipe is connected to the air inlet 11 to provide an air source (namely, an external air supply device), and a two-way electromagnetic valve is adopted to control the on-off of the air source. The two-way electromagnetic valve is connected with an output point of the digital output module, and the signal output of the digital output module is controlled by programming a PLC program, so that the on-off of the two-way electromagnetic valve is controlled. So realize, when the device be stained with on the light-passing board 3 and glue the foreign matter and reach the certain duration after, the device can clean the jetting automatically, and until will shelter from the thing jetting totally, guarantee can normally propagate the phototube light signal.
In conclusion, by adopting the detection module for the cigarette production line, in the production process, the shelters such as tobacco leaves, tobacco shreds or smoke dust stuck on the inner side of the light-transmitting plate 3 can be cleaned in time, so that the photoelectric tube is prevented from being abnormally sheltered to generate wrong detection signals. Secondly, the cleaning of shelters does not need the manual implementation of operator, reduces labour's consumption and the probability that other foreign matters got into the production line. In addition, the device of the detection module for clearing the sheltering object is arranged on one side of the transparent glass 4, which is far away from the material to be detected, so that the possibility that sundries are mixed into tobacco leaves, cut tobacco and the like is further reduced.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. A device for preventing a light path from being shielded is characterized by comprising a dust remover and a light-transmitting plate which is connected with the dust remover in a sealing way and can be penetrated by the light path; the dust remover is provided with a front side surface, a back side surface and a peripheral side surface, wherein the front side surface and the back side surface are opposite, and the peripheral side surface is connected between the front side surface and the back side surface; the light-transmitting plate is fixed on the back side surface of the dust remover; the peripheral side of the dust remover is provided with an air inlet hole used for being connected with external air supply equipment; the back side surface of the dust remover is provided with an air guide channel communicated with the air inlet hole and used for guiding the air flowing in from the air inlet hole to the light-transmitting plate; and the middle part of the dust remover is provided with an air outlet hole which penetrates through the front side surface and the back side surface, and the air outlet hole is communicated with the air guide channel and is used for discharging air out of the dust remover.
2. The device according to claim 1, further comprising a sealing gasket disposed between the dust collector and the transparent plate, wherein the sealing gasket is connected to the dust collector and the transparent plate in a sealing manner, and a through hole corresponding to the air outlet of the dust collector is disposed in the middle of the sealing gasket.
3. The apparatus according to claim 1, wherein the air outlet hole has a frustum shape, and an inner diameter of the air outlet hole gradually decreases along the front side surface toward the back side surface.
4. The apparatus for preventing a light path from being blocked according to claim 1, wherein the air guide passage includes an annular groove and a blowing groove formed at a rear side of the dust catcher; the annular groove surrounds the air outlet hole; the air blowing groove is provided with an air inlet notch communicated with the annular groove and an air outlet notch communicated with the air outlet hole.
5. The device for preventing the light path from being blocked according to claim 4, wherein a plane where the bottom wall of the air blowing groove is located and a plane where the back side surface of the dust remover is located have an included angle, and a distance between the bottom wall of the air blowing groove and the back side surface of the dust remover gradually decreases along a direction from the air inlet notch to the air outlet notch.
6. The apparatus as claimed in claim 4, wherein the groove width of the annular groove is the same as the aperture of the air inlet hole.
7. The apparatus according to claim 4, wherein the air guide channel comprises a plurality of air blowing grooves arranged at equal intervals around the air outlet.
8. The apparatus according to claim 7, wherein a direction of the blowing groove from the end of the inlet notch to the end of the outlet notch forms an angle with a radial direction of the outlet hole.
9. The utility model provides a detection module for cigarette production line, detection module includes the photoelectric cell and is used for keeping apart the photoelectric cell and the transparent glass of the material that awaits measuring, its characterized in that, detection module still includes the device that prevents that the light path from being sheltered from of claim 1, the dust remover of device is fixed transparent glass's one side towards the photoelectric cell, wear to be equipped with the aperture on the transparent glass with the air vent that the venthole matches, the air vent with the air vent aligns.
10. The detection module according to claim 9, wherein the air outlet of the device has a frustum-conical shape, and an inner diameter of the air outlet is gradually smaller along the front side toward the back side; the aperture of the vent hole on the transparent glass is consistent with the maximum aperture of the air outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845130.XU CN211587775U (en) | 2019-10-30 | 2019-10-30 | Device for preventing light path is sheltered from and detection module for cigarette production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845130.XU CN211587775U (en) | 2019-10-30 | 2019-10-30 | Device for preventing light path is sheltered from and detection module for cigarette production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211587775U true CN211587775U (en) | 2020-09-29 |
Family
ID=72586639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921845130.XU Active CN211587775U (en) | 2019-10-30 | 2019-10-30 | Device for preventing light path is sheltered from and detection module for cigarette production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211587775U (en) |
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2019
- 2019-10-30 CN CN201921845130.XU patent/CN211587775U/en active Active
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