Transverse material distribution vehicle operation monitoring device
By installing cameras on the fabric cart to monitor markers, the problem of mixed tobacco products caused by proximity switch failure was solved, enabling more precise position control and ensuring tobacco quality.
Patent Information
- Application Number
- CN202420992961.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-09
AI Technical Summary
In the existing technology, due to the failure of the proximity switch, the horizontal feeding cart may accidentally move to other finished tobacco product cabinet areas, resulting in mixed and incorrect tobacco product labels, which poses a potential risk to the quality of the tobacco.
A dual monitoring mechanism using cameras and proximity switches is adopted. The camera identifies markers to monitor the position of the fabric carrier, ensuring that it moves within the designated area and avoiding malfunctions when the proximity switch fails.
It improved the accuracy and reliability of monitoring the operating status of the fabric feeding vehicle, prevented the mixing of different tobacco brands and numbers, and eliminated potential quality risks of the tobacco.
Smart Images
Figure CN222303072U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tobacco processing, and in particular to a device for monitoring the operation of a transverse material distribution vehicle. Background Art
[0002] In the tobacco making process of a cigarette factory, tobacco is transported to a finished tobacco cabinet group for temporary storage after various processing steps are completed. Then, according to production needs, the tobacco in the finished tobacco cabinet group is transported to a cigarette rolling machine group for cigarette rolling. The finished tobacco cabinet group is provided with a plurality of finished tobacco cabinets arranged side by side to store tobacco of different brands respectively. The arrangement direction of the plurality of finished tobacco cabinets is horizontal. A longitudinal distribution vehicle is provided in each finished tobacco cabinet. The longitudinal distribution vehicle can reciprocate longitudinally in the corresponding finished tobacco cabinet. The longitudinal distribution vehicle is provided with a transmission device which can switch forward and reverse. The conveyor belt of the upper part runs in the same direction as the moving direction of the longitudinal distribution car. In addition, a transverse distribution car is provided above the finished silk cabinet group. The transverse distribution car can move transversely and can be positioned at different finished silk cabinet areas. After being positioned at a finished silk cabinet, the transverse distribution car can reciprocate transversely in the currently positioned finished silk cabinet area to evenly transport the tobacco to the conveyor belt of the longitudinal distribution car, and then the longitudinal distribution car reciprocates longitudinally to evenly transport the tobacco on the conveyor belt to the currently corresponding finished silk cabinet.
[0003] In the above process, after the transverse cloth-distributing vehicle is positioned at a finished silk cabinet area, it is necessary to restrict the transverse cloth-distributing vehicle to move back and forth in the transverse direction within the currently positioned finished silk cabinet area. The current restriction method is to set two proximity switches on both sides of the finished silk cabinet in the transverse direction, and set a metal sensor sheet on the transverse cloth-distributing vehicle. Driven by the transverse cloth-distributing vehicle, when the metal sensor sheet is laterally close to the proximity switch on the left, it will trigger the proximity switch on the left, and it is necessary to control the transverse cloth-distributing vehicle to run in the opposite direction to the right. When the metal sensor sheet is laterally close to the proximity switch on the right, it will trigger the proximity switch on the right, and it is necessary to control the transverse cloth-distributing vehicle to run in the opposite direction to the left, thereby restricting the transverse cloth-distributing vehicle within the area of the two proximity switches. However, due to dust accumulation on the components, the proximity switch may fail to be triggered, making the transverse cloth-distributing vehicle unable to turn, so that the transverse cloth-distributing vehicle moves to the range of other finished silk cabinets. Since the finished silk cabinets store different brands of tobacco, the phenomenon of mixed brands and wrong numbers of tobacco will be caused, and there is a hidden danger to tobacco quality. Utility Model Content
[0004] The purpose of the present application is to provide a transverse fabric distribution vehicle operation monitoring device, which can effectively monitor the operation of the transverse fabric distribution vehicle to prevent the transverse fabric distribution vehicle from accidentally moving to other finished silk cabinet areas, thereby effectively solving the shortcomings of the prior art.
[0005] To this end, in a first aspect, an embodiment of the present application provides a device for monitoring the operation of a lateral material distribution vehicle, comprising:
[0006] Storage area;
[0007] A first material distribution vehicle reciprocates in the material storage area along a first direction to transport the material on the first material distribution vehicle to the material storage area;
[0008] The second material distribution vehicle reciprocates along the second direction, and the second material distribution vehicle is provided with a material discharging end to transport the material on the second material distribution vehicle to the second material distribution vehicle;
[0009] There are two proximity switches, which are respectively arranged on both sides of the storage area along the second direction;
[0010] There are two markers, which are respectively arranged on both sides of the storage area along the second direction, and in the storage area, the markers are closer to the outside of the storage area than the proximity switch;
[0011] A camera is arranged on the second fabric vehicle and is used for monitoring and identifying the marker.
[0012] In a possible implementation manner, the first direction and the second direction are perpendicular to each other.
[0013] In a possible implementation, the two proximity switches and the two markers are symmetrically arranged relative to a first direction center line on the first fabric distributing vehicle.
[0014] In a possible implementation, the second material distribution vehicle moves back and forth in a step-by-step manner along the second direction.
[0015] In a possible implementation, in the second direction, the distance between the two proximity switches is an integer multiple of a single stepping distance of the second material distribution vehicle.
[0016] In a possible implementation, in the second direction, the distance between the proximity switch and the marker on the same side is not less than a single stepping distance of the second material distribution vehicle.
[0017] In a possible implementation manner, in the second direction, the distance between the proximity switch and the marker on the same side is equal to a single stepping distance of the second material distribution vehicle.
[0018] In a possible implementation, the first material distribution vehicle reciprocates along the first direction in the middle of the material storage area in the second direction.
[0019] In a possible implementation, a plurality of the material storage areas are provided, and the material storage areas are arranged along the second direction, and a first material distribution vehicle is provided in each material storage area.
[0020] In a possible implementation, the camera is disposed close to a discharging end of the second fabric vehicle.
[0021] According to the monitoring device provided in the embodiment of the present application, under the dual monitoring of the proximity switch and the camera, the operating position of the second distribution vehicle can be effectively monitored, thereby improving the accuracy and reliability of the operating status monitoring, and preventing the second distribution vehicle from moving from the currently positioned storage area to other storage areas. This can effectively prevent the phenomenon of tobacco mixing and wrong numbers, and eliminate the hidden dangers of tobacco quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of the structure of a device for monitoring the operation of a lateral material distribution vehicle provided in an embodiment of the present application;
[0023] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0024] Figure 3 A schematic diagram of the positions of some components in the monitoring device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0026] like Figure 1-Figure 3As shown, the embodiment of the present application provides a device for monitoring the operation of a horizontal cloth distributing vehicle, which is used in the process of distributing cloth to a finished product cabinet group. When a cigarette factory processes tobacco, after the tobacco processing is completed, the tobacco needs to be transported to the finished product cabinet group for temporary storage. The finished product cabinet group is arranged with a plurality of finished product cabinets, each of which is used to store tobacco of different brands. Then, according to production needs, the tobacco of the corresponding brand is transported to the rolling and connecting machine process for cigarette rolling. The monitoring device of the present application is used in the step of transporting the tobacco after processing to the finished product cabinet group. At this stage When conveying tobacco to the finished silk cabinet group, the cooperation of the horizontal distribution car and the longitudinal distribution car is required. The arrangement direction of multiple finished silk cabinets is taken as the horizontal direction. The direction perpendicular to the horizontal direction in the horizontal plane is taken as the longitudinal direction. Each finished silk cabinet is equipped with a longitudinal distribution car inside. The longitudinal distribution car moves back and forth along the longitudinal direction. A conveyor belt is arranged on the longitudinal distribution car. The running direction of the conveyor belt on the upper part is kept the same as the moving direction of the longitudinal distribution car, so as to convey the tobacco falling on the conveyor belt to the finished silk cabinet. A horizontal distribution car is arranged above the entire finished silk cabinet group. The movement direction of the horizontal distribution car The moving range extends to all the finished silk cabinets. Through controlled positioning, the horizontal fabric car is moved to the top of the corresponding finished silk cabinet according to the brand of tobacco delivered from upstream, so that the material on the horizontal fabric car can be transported to the conveyor belt of the longitudinal fabric car, and then transported to the finished silk cabinet. Among them, after the horizontal fabric car is positioned at the designated finished silk cabinet, the horizontal fabric car must be restricted to move back and forth in the horizontal area of the current finished silk cabinet, so that the tobacco is evenly transported to the longitudinal fabric car, and the tobacco on the longitudinal fabric car is evenly delivered to the finished silk cabinet. In the above, the horizontal fabric car is restricted to The current method of the finished silk cabinet area is as follows: proximity switches 31 are set on both sides of the finished silk cabinet along the horizontal direction, and metal sensor sheets 32 are set on the horizontal cloth cart. When the horizontal cloth cart moves to one side of the finished silk cabinet, the metal sensor sheet 32 triggers the proximity switch 31 on that side, and then the horizontal cloth cart is controlled by the control device to turn around and move in the reverse direction. When the horizontal cloth cart moves to the other side of the finished silk cabinet, the metal sensor sheet 32 triggers the proximity switch 31 on that side again, and then the horizontal cloth cart is controlled by the control device to turn around and move in the reverse direction, thereby limiting the horizontal cloth cart within the current finished silk cabinet area.
[0027] However, in the actual operation process, due to the large amount of dust in the workshop, the dust accumulation on the proximity switch 31 or the metal sensor sheet 32 will affect the triggering accuracy, and then the proximity switch 31 will fail to trigger. After the trigger fails, the transverse cloth car will move out of the current finished silk cabinet area and move to other finished silk cabinet areas, so that the tobacco is transported to other finished silk cabinets, resulting in the phenomenon of tobacco mixing and wrong numbers, causing tobacco quality defects. The transverse cloth car operation monitoring device of the present application is intended to improve the monitoring effect of the transverse cloth car, prevent the transverse cloth car from accidentally moving to other finished silk cabinet areas during the cloth process, avoid the phenomenon of tobacco mixing and wrong numbers, and eliminate tobacco quality hazards.
[0028] The device for monitoring the operation of a transverse distribution vehicle comprises a storage area 111, a first distribution vehicle 21 and a second distribution vehicle 22. The storage area 111 is a separate area for storing materials. The first distribution vehicle 21 reciprocates along a first direction in the storage area 111. A conveyor belt 2101 is provided on the first distribution vehicle 21. The conveyor belt 2101 is arranged horizontally, so that the conveyor belt 2101 is arranged in an upper and lower layer distribution. The running direction of the upper conveyor belt 2101 is the same as the overall moving direction of the first distribution vehicle 21. The second distribution vehicle 22 reciprocates along a second direction. A discharging end 2201 is provided on the second distribution vehicle 22. The tobacco on the second distribution vehicle 22 is transported to the conveyor belt 2101 of the first distribution vehicle 21 through the discharging end 2201. The tobacco is transported to the second distribution vehicle 22 from the upstream. According to the brand of tobacco transported from the upstream, the tobacco is transported to the second distribution vehicle 22. No., position and move the second fabric cart 22 so that the second fabric cart 22 moves to the top of the designated finished silk cabinet, and then the second fabric cart 22 moves back and forth along the second direction within the area of the current finished silk cabinet. During the movement of the second fabric cart 22, the tobacco is transported to the first fabric cart 21 through the discharging end 2201, and the tobacco falls on the conveyor belt 2101 of the first fabric cart 21. Then the first fabric cart 21 moves back and forth in the finished silk cabinet, and the running direction of the conveyor belt 2101 also changes continuously, and the tobacco that falls on the conveyor belt 2101 of the first fabric cart 21 is transported to the finished silk cabinet. Due to the repeated movement of the first fabric cart 21 and the second fabric cart 22, the tobacco falls more evenly on the conveyor belt 2101 of the first fabric cart 21, and the tobacco on the conveyor belt 2101 falls evenly in the current finished silk cabinet.
[0029] A proximity switch 31 is provided on the material storage area 111. There are two proximity switches 31. The two proximity switches 31 are respectively provided on both sides of the material storage area 111 along the second direction to limit the area of the material storage area 111 in the second direction. A metal sensor sheet 32 is provided on the second material distribution vehicle 22. Preferably, the metal sensor sheet 32 is provided at a position close to the discharge end 2201. During the reciprocating movement of the second material distribution vehicle 22, the discharge end 2201 of the second material distribution vehicle 22 can be limited to move within the area range of the material storage area 111. A marker 41 is also provided on the material storage area 111. There are two markers 41. The two markers 41 are respectively provided on both sides of the material storage area 111 along the second direction. In addition, in the material storage area 111, along the second direction In the second direction, the marker 41 is closer to the outside of the storage area 111 relative to the proximity switch 31, that is, the two markers 41 are outside the two proximity switches 31, but the two markers 41 are still within the range of the current storage area 111, and a camera 42 is set on the second fabric cart 22 to monitor and identify the marker 41. Preferably, the camera 42 is set on the second fabric cart 22 near the discharge end 2201. When the proximity switch 31 fails to be triggered, the second fabric cart 22 continues to move in the current direction, and then the camera 42 can observe the marker 41 on the corresponding side. At this time, it indicates that the discharge end 2201 of the second fabric cart 22 has moved to the edge of the current storage area 111, and the moving direction of the second fabric cart 22 needs to be turned around.
[0030] In this embodiment, the dual triggering mechanism of the proximity switch 31 and the camera 42 can increase the effectiveness of monitoring the second fabric cart 22, and the monitoring of the operating status of the second fabric cart 22 can be more sensitive and accurate. When the proximity switch 31 fails to be triggered, the second fabric cart 22 can still be monitored by the camera 42, because the camera 42 monitors the marker 41 by intuitively collecting images, and the camera 42 is connected to a display screen and other devices by wire, and is not affected by external signals, or the anti-interference performance is significantly improved. Even if a certain amount of dust accumulates on the marker 41 or the lens of the camera 42, it can still be effectively monitored, and the discharge end 2201 of the second fabric cart 22 can be prevented from moving out of the storage area 111.
[0031] Preferably, the first direction and the second direction are perpendicular to each other, the first direction is longitudinal, and the second direction is transverse. A plurality of storage areas 111 are provided, and each storage area 111 is arranged at intervals along the second direction. A first distribution vehicle 21 is provided in each storage area 111, and a second distribution vehicle 22 is provided, and the second distribution vehicle 22 is movably located above the storage area 111 as a whole. When the second distribution vehicle 22 reciprocates above the storage area 111, the discharge end 2201 of the second distribution vehicle 22 can be switched within the range of each storage area 111, and the discharge end 2201 can be moved to the range of each storage area 111. According to the brand of tobacco transported upstream, the second distribution vehicle 22 is first adjusted and moved so that the discharge end 2201 on the second distribution vehicle 22 moves to the range of the corresponding storage area 111, and then the discharge end 2201 reciprocates within the range of the current storage area 111.
[0032] The first fabric car 21 is located in the middle of the storage area 111, or in other words, the first fabric car 21 reciprocates along the first direction in the middle of the second direction in the storage area 111, that is, the two outer sides of the first fabric car 21 in the second direction are equidistant from the two outer sides of the storage area 111 in the second direction. In this embodiment, the two proximity switches 31 and the two markers 41 are symmetrically arranged relative to the center line of the first direction on the first fabric car 21. Therefore, in each storage area 111, the two markers 41 and the two proximity switches 31 are symmetrically arranged. More preferably, along the second direction, the camera 42 and the metal sensor sheet 32 are both located on the second fabric car 22 relative to the middle of the discharge end 2201, the two markers 41 are arranged at the same height, and the two proximity switches 31 are arranged at the same height. In this way, the limit movement trajectory of the discharge end 2201 is more symmetrical, so that the fabric is more uniform.
[0033] More preferably, after the second material distribution vehicle 22 is positioned at the current material storage area 111, the second material distribution vehicle 22 can move back and forth in the current material storage area 111 in a step-by-step manner. When the first material distribution vehicle 21 moves to one side of the material storage area 111 along the first direction, it turns around and runs in the reverse direction. At this time, the second material distribution vehicle 22 takes one step further. When the first material distribution vehicle 21 moves to the other side of the material storage area 111, it turns around and runs in the reverse direction again. At this time, the second material distribution vehicle 22 takes another step further. During this process, the discharging end 2201 of the second material distribution vehicle 22 continuously moves toward the first material distribution vehicle The material is transported on the conveyor belt 2101 of the material cart 21 in a cycle to evenly transport the tobacco to the storage area 111. When the proximity switch 31 is triggered by the metal sensor sheet 32, or the camera 42 captures the marker 41, the second material distribution cart 22 turns around and moves in reverse steps. The lens angle of the camera 42 is adjusted so that the camera 42 can capture the marker 41 only when it moves to the position of the marker 41. The marker 41 cannot be captured normally at other positions to increase the accuracy of monitoring.
[0034] In this embodiment, in the second direction, the spacing between the two proximity switches 31 is an integer multiple of the single stepping distance of the second material distribution vehicle 22, so that the movement of the second material distribution vehicle 22 is more regular and uniform. In the second direction, the spacing between the proximity switch 31 and the marker 41 on the same side is not less than the single stepping distance of the second material distribution vehicle 22. Preferably, in the second direction, the spacing between the proximity switch 31 and the marker 41 on the same side is equal to the single stepping distance of the second material distribution vehicle 22. In this way, when the proximity switch 31 fails, the discharge end 2201 is promptly discovered by the camera 42 after taking a step outward, thereby improving the restriction effect on the second material distribution vehicle 22. In this embodiment, the U-turn of the second material distribution vehicle 22 occurs after the completion of one step, which makes the control more convenient, is also beneficial to the spatial layout design of the equipment, and is also beneficial to the first material distribution vehicle 21 completing one stroke of distribution.
[0035] Preferably, a track can be set above the storage area 111, and the second material distribution vehicle 22 moves along the track. The second material distribution vehicle 22 can be driven by a driving motor to achieve reciprocating movement. A conveying belt or a spiral conveying device can be set on the second material distribution vehicle 22, and the end of the conveying belt and the end of the spiral conveying device correspond to the discharge end 2201 of the second material distribution vehicle 22. In this embodiment, the proximity switch 31 can be connected to the controller, and the driving motor is controlled by the controller to realize the movement and U-turn of the second material distribution vehicle 22. The monitoring method of the combination of the camera 42 and the marker 41 can be carried out by manually observing the display. In actual operation, the failure of the proximity switch 31 often occurs after a lot of dust accumulates on the proximity switch 31 and the metal sensor sheet 32. When the failure occurs, the marker 41 is manually observed on the display. At this time, the machine can be manually stopped to eliminate the fault and clean the dust, and then normal operation can be restored. The controller can also be manually operated to turn the second material distribution vehicle 22 around, and observe whether the failure of the proximity switch 31 occurs again later.
[0036] In this embodiment, the material storage area 111 is a finished silk cabinet.
[0037] Figure 3 In the figure, the positional relationship between the proximity switch 31, the marker 41, the second fabric cart 22, the camera 42 and the metal sensor sheet 32 in the material storage area 111 is schematically shown. For the convenience of demonstration, the installation positions of the camera 42 and the metal sensor sheet 32 are not correct.
[0038] The working principle of the present application is as follows: during operation, according to the brand of tobacco delivered upstream, the second distributing vehicle 22 is moved to the designated storage area 111, so that the discharging end 2201 of the second distributing vehicle 22 is located above the first distributing vehicle 21 in the storage area 111, and then the second distributing vehicle 22 moves back and forth step by step to deliver tobacco, and the first distributing vehicle 21 moves back and forth to deliver tobacco. Under normal circumstances, after a certain step of the second distributing vehicle 22 is completed, the metal sensor sheet 32 triggers the proximity switch 31 on one side. At this time, the second distributing vehicle does not turn around immediately, but waits for the first distributing vehicle 21 to move back and forth. When the stroke is completed and the U-turn is made, the second distribution car 22 steps in the reverse direction again. When the proximity switch 31 is triggered and fails, the second distribution car 22 steps in once, and the camera 42 collects a marker 41 on one side. At this time, the material drop range of the discharge end 2201 of the second distribution car 22 is still within the conveyor belt 2101 of the first distribution car 21. When the first distribution car 21 completes the stroke and turns around, the second distribution car 22 turns around and steps in the reverse direction to prevent the discharge end 2201 of the second distribution car 22 from moving out of the current storage area 111. The tobacco can be transported in a cycle in this way.
[0039] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0040] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0041] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0042] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A device for monitoring the operation of a lateral material placing vehicle, characterized in that: include: Storage area; A first material distribution vehicle reciprocates in the material storage area along a first direction to transport the material on the first material distribution vehicle to the material storage area; The second material distribution vehicle reciprocates along the second direction, and the second material distribution vehicle is provided with a material discharging end to transport the material on the second material distribution vehicle to the second material distribution vehicle; There are two proximity switches, which are respectively arranged on both sides of the storage area along the second direction; There are two markers, which are respectively arranged on both sides of the storage area along the second direction, and in the storage area, the markers are closer to the outside of the storage area than the proximity switch; A camera is arranged on the second fabric vehicle and is used for monitoring and identifying the marker.
2. The device for monitoring the operation of a lateral material placing vehicle according to claim 1, characterized in that: The first direction and the second direction are perpendicular to each other.
3. The device for monitoring the operation of a lateral material distribution vehicle according to claim 1, characterized in that: The two proximity switches and the two markers are symmetrically arranged relative to the first direction center line of the first material distributing vehicle.
4. The device for monitoring the operation of a lateral material placing vehicle according to claim 3, characterized in that: The second material distribution vehicle moves back and forth in a step-by-step manner along the second direction.
5. The device for monitoring the operation of a lateral material placing vehicle according to claim 4, characterized in that: In the second direction, the distance between the two proximity switches is an integer multiple of a single stepping distance of the second material distribution vehicle.
6. The device for monitoring the operation of a lateral material placing vehicle according to claim 5, characterized in that: In the second direction, the distance between the proximity switch and the marker on the same side is not less than a single stepping distance of the second material distribution vehicle.
7. The device for monitoring the operation of a lateral material placing vehicle according to claim 6, characterized in that: In the second direction, the distance between the proximity switch and the marker on the same side is equal to a single stepping distance of the second material distribution vehicle.
8. The device for monitoring the operation of a lateral material placing vehicle according to claim 3, characterized in that: The first material distribution vehicle reciprocates along the first direction at the middle of the material storage area in the second direction.
9. The device for monitoring the operation of a lateral material placing vehicle according to claim 1, characterized in that: There are a plurality of material storage areas, each of which is arranged along the second direction, and each of which is provided with a first material distribution vehicle.
10. The device for monitoring the operation of a lateral material placing vehicle according to claim 1, characterized in that: The camera is arranged close to the discharging end of the second fabric car.