Bidirectional turnover device for smoke box

Abstract

The invention discloses a two-way turnover device for a smoke box. The two-way turnover device comprises a conveyor, a fixing assembly, a turnover assembly, a driving assembly and a control assembly. The fixing assembly is arranged on the conveyor and comprises guide rods, the two ends of each guide rod are connected with the side wall of the conveyor, and the guide rods are arranged in the conveying direction of the conveyor at intervals. The overturning assembly comprises a plurality of overturning vertical rods, a plurality of overturning transverse rods and a connecting rod, the overturning vertical rods are perpendicularly connected with the overturning transverse rods, the connecting rod is connected with the connecting positions of the overturning transverse rods and the overturning vertical rods, the length direction of the overturning transverse rods is perpendicular to the conveying direction of the conveyor, and the length direction of the connecting rod is parallel to the conveying direction of the conveyor. The connecting rod is located below the guide rod and abuts against the guide rod. The driving assembly is connected with the connecting rod; the control assembly is connected with the driving assembly. According to the invention, the labor intensity of operators and the production cost can be reduced, and the working efficiency is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette box conveying, and more specifically, to a two-way turning device for a cigarette box. Background Art

[0002] The cigarette production method is a typical process production. The transportation of finished cigarette boxes is an important link in the storage and outbound delivery of finished products in the cigarette production process. During the transportation process, the finished cigarettes should be turned over and the direction of the cigarette boxes should be adjusted according to the situation. The turning of the cigarette box refers to turning the cigarette box from a lying position to a standing position, or turning the cigarette box from a standing position to a lying position.

[0003] In the actual production process, due to the large output, if the cigarette boxes are turned over manually alone, it will consume huge manpower and material resources, which will reduce the working efficiency of the logistics system and increase material consumption.

[0004] Therefore, how to provide a bidirectional flipping device for a cigarette box has become a technical problem that urgently needs to be solved in the art. Summary of the invention

[0005] One object of the present invention is to provide a new technical solution for a two-way turning device for a cigarette box.

[0006] According to a first aspect of the present invention, there is provided a cigarette box bidirectional turning device, comprising: a conveyor, a fixing assembly, a turning assembly, a driving assembly and a control assembly;

[0007] The fixing assembly is arranged on the conveyor, and the fixing assembly comprises a guide rod, both ends of which are respectively connected to the side walls of the conveyor, and the guide rods are arranged at intervals along the conveying direction of the conveyor;

[0008] The flip assembly comprises a plurality of flip vertical rods, a plurality of flip cross rods and a connecting rod, wherein the flip vertical rods are vertically connected to the flip cross rods, and the connecting rods are respectively connected to the connection points of the plurality of flip cross rods and the plurality of flip vertical rods, the length direction of the flip cross rods is perpendicular to the conveying direction of the conveyor, the length direction of the connecting rods is parallel to the conveying direction of the conveyor, and the connecting rods are located below the guide rods and abut against the guide rods;

[0009] The driving assembly is connected to the connecting rod and is used to drive the connecting rod to rotate;

[0010] The control component is connected to the driving component, and the control component is used to detect the position of the smoke box and control the opening and closing of the driving component.

[0011] Optionally, the fixing assembly further includes a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are respectively arranged on the side walls of the conveyor, and the first fixing plate and the second fixing plate are respectively connected to two ends of the guide rod.

[0012] Optionally, the flip assembly further comprises a plurality of support rods, wherein the first ends of the support rods are connected to the connection between the flip cross rod and the flip vertical rod, the second ends of the support rods are connected to the connecting rods, and the angles formed between the support rods and the flip cross rod and the flip vertical rod are obtuse angles.

[0013] Optionally, the flip assembly further includes a fixed block and a telescopic rod, wherein the fixed block is fixed on the first fixed plate, the first end of the telescopic rod is movably connected to the fixed block, and the second end of the telescopic rod is movably connected to the flip upright pole.

[0014] Optionally, the driving assembly includes a driving cylinder and a connecting shaft, the driving cylinder is fixed on the second fixed plate, the output shaft of the driving cylinder is connected to the first end of the connecting shaft, and the second end of the connecting shaft is connected to the middle position of the connecting rod.

[0015] Optionally, the angle between the connecting axis and the supporting rod is less than 108 degrees.

[0016] Optionally, the control component includes a controller and a first photoelectric switch, the first photoelectric switch is arranged on the side wall of the conveyor, and the first photoelectric switch is arranged at the center position of the connecting rod mapped to the position of the side wall of the conveyor, and the controller is respectively connected to the first photoelectric switch and the driving component.

[0017] Optionally, the control component also includes a second photoelectric switch, which is electrically connected to the controller, and the second photoelectric switch is arranged on the side wall of the conveyor, and the second photoelectric switch is located below the first photoelectric switch along the conveying direction of the conveyor, and the second photoelectric switch is used to detect the smoke box.

[0018] The beneficial effects of the present invention are:

[0019] The present invention connects the two ends of the guide rod to the side wall of the conveyor respectively, and the guide rod is arranged at intervals along the conveying direction of the conveyor; the flip vertical rod is vertically connected to the flip cross rod, the connecting rod is respectively connected to the connection between the plurality of flip cross rods and the plurality of flip vertical rods, the length direction of the flip cross rod is perpendicular to the conveying direction of the conveyor, the length direction of the connecting rod is parallel to the conveying direction of the conveyor, the connecting rod is rotatably connected to the guide rod; the driving component is connected to the connecting rod, and the control component is connected to the driving component. When in use, the position of the cigarette box is detected by the control component, when the conveyor conveys the cigarette box to the flip cross rod, the control component controls the driving component to start, the driving component drives the connecting rod to move, and the movement of the connecting rod drives the plurality of flip cross rods and the plurality of flip vertical rods to rotate 90 degrees at the same time, so that the cigarette box on the flip cross rod can be flipped from a lying posture to a standing posture, or the cigarette box on the flip cross rod can be flipped from a standing posture to a lying posture. The present invention can reduce the labor intensity and production cost of the operator, and also improve the work efficiency.

[0020] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 It is a structural diagram of the bidirectional turning device of the cigarette box of the present invention;

[0023] Figure 2 It is a side view of the bidirectional turning device of the cigarette box of the present invention;

[0024] Figure 3 It is a schematic diagram of the bidirectional turning device for a cigarette box of the present invention turning over a cigarette box;

[0025] Figure 4 It is a schematic structural diagram of a cigarette box flipping device of the present invention.

[0026] The markings in the figure are as follows: 1. Conveyor; 11. Conveyor roller; 2. Fixed assembly; 21. Guide rod; 22. First fixed plate; 23. Second fixed plate; 3. Flip assembly; 31. Flip vertical rod; 32. Flip horizontal rod; 33. Connecting rod; 34. Support rod; 35. Fixed block; 36. Telescopic rod; 4. Drive assembly; 41. Drive cylinder; 42. Connecting shaft; 5. Cigarette box. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] like Figures 1 to 4 As shown, an embodiment of the present invention provides a bidirectional turning device for a cigarette box, comprising: a conveyor 1, a fixing component 2, a turning component 3, a driving component 4 and a control component.

[0032] The fixing assembly 2 is disposed on the conveyor 1 , and includes a guide rod 21 . Both ends of the guide rod 21 are respectively connected to the side walls of the conveyor 1 , and the guide rods 21 are arranged at intervals along the conveying direction of the conveyor 1 .

[0033] The flip assembly 3 includes multiple flip vertical rods 31, multiple flip cross rods 32 and connecting rods 33. The flip vertical rods 31 are vertically connected to the flip cross rods 32. The connecting rods 33 are respectively connected to the connection points of the multiple flip cross rods 32 and the multiple flip vertical rods 31. The length direction of the flip cross rods 32 is perpendicular to the conveying direction of the conveyor 1. The length direction of the connecting rods 33 is parallel to the conveying direction of the conveyor 1. The connecting rods 33 are located below the guide rods 21 and abut against the guide rods 21.

[0034] The driving assembly 4 is connected to the connecting rod 33 and is used to drive the connecting rod 33 to rotate.

[0035] The control component is connected to the driving component 4 , and is used to detect the position of the smoke box 5 and control the opening and closing of the driving component 4 .

[0036] In this embodiment, there are three flip vertical rods 31 and three flip cross rods 32, and the three flip vertical rods 31 are respectively connected to the three flip cross rods 32 to form two flip surfaces. When the cigarette box 5 is transported to the flip vertical rods 31 or the flip cross rods 32 by the conveyor 1, the connecting rod 33 is driven to rotate by the driving component 4, so that the flipping of the two flip surfaces can be realized, and then the cigarette box 5 can be flipped.

[0037] Moreover, the conveyor 1 is provided with a plurality of conveyor rollers 11, and the flip cross bars 32 are respectively provided between two adjacent conveyor rollers 11, so as not to affect the process of the conveyor 1 conveying the cigarette box 5. The guide rod 21 is located below the conveyor roller 11 and abuts against the connecting rod 33, so as to limit the connecting rod 33, and prevent the connecting rod 33 from moving excessively and contacting the conveyor roller 11, thereby causing damage to the conveyor roller 11.

[0038] Moreover, the length of the flip cross bar 32 is greater than the length of the flip vertical bar 31 , and the length of the flip vertical bar 31 is less than the distance between the connection between the flip cross bar 32 and the flip vertical bar 31 and the side wall of the conveyor 1 .

[0039] When using, Figure 3 to Figure 4 As shown, the position of the cigarette box 5 is detected by the control component. When the conveyor 1 conveys the cigarette box 5 to the flip cross bar 32, the control component controls the driving component 4 to start, and the driving component 4 drives the connecting rod 33 to move. The movement of the connecting rod 33 simultaneously drives multiple flip cross bars 32 and multiple flip vertical bars 31 to rotate 90 degrees, thereby being able to flip the cigarette box 5 on the flip cross bar 32 from a lying position to a standing position, or flip the cigarette box 5 on the flip cross bar 32 from a standing position to a lying position.

[0040] It should be noted that the cigarette box bidirectional turning device of the present invention turns the cigarette box 5 in the width direction of the conveyor 1, while the prior art turns the cigarette box 5 in the length direction of the conveyor 1 (the conveying direction of the cigarette box 5).

[0041] The present invention connects the two ends of the guide rod 21 to the side walls of the conveyor 1 respectively, and the guide rods 21 are arranged at intervals along the conveying direction of the conveyor 1; and the flip vertical rod 31 is vertically connected to the flip cross rod 32, and the connecting rod 33 is respectively connected to the connection between the multiple flip cross rods 32 and the multiple flip vertical rods 31, the length direction of the flip cross rod 32 is perpendicular to the conveying direction of the conveyor 1, the length direction of the connecting rod 33 is parallel to the conveying direction of the conveyor 1, and the connecting rod 33 is rotatably connected to the guide rod 21; the driving component 4 is connected to the connecting rod 33, and the control component is connected to the driving component 4. When in use, the position of the cigarette box 5 is detected by the control component. When the conveyor 1 conveys the cigarette box 5 to the flip cross bar 32, the control component controls the drive component 4 to start, and the drive component 4 drives the connecting rod 33 to move. The movement of the connecting rod 33 simultaneously drives multiple flip cross bars 32 and multiple flip vertical rods 31 to rotate 90 degrees, thereby being able to flip the cigarette box 5 on the flip cross bar 32 from a lying position to a standing position, or flip the cigarette box 5 on the flip cross bar 32 from a standing position to a lying position. The present invention can reduce the labor intensity and production costs of operators, and also improve work efficiency.

[0042] In one embodiment of the cigarette box bidirectional turning device of the present invention, Figure 1 to Figure 2 As shown, the fixing assembly 2 further includes a first fixing plate 22 and a second fixing plate 23 , which are respectively arranged on the side walls of the conveyor 1 , and are respectively connected to both ends of the guide rod 21 .

[0043] Specifically, the first fixed plate 22 and the second fixed plate 23 can be fixed to the side wall of the conveyor 1 by bolts, snaps, etc., so that the first fixed plate 22 and the second fixed plate 23 can be stably set on the conveyor 1, and the guide rod 21 can be stably installed on the first fixed plate 22 and the second fixed plate 23 to limit the connecting rod 33.

[0044] In one embodiment of the cigarette box bidirectional turning device of the present invention, Figure 1 to Figure 2 As shown, the flip assembly 3 also includes a plurality of support rods 34, wherein the first ends of the support rods 34 are connected to the connection between the flip cross bar 32 and the flip vertical bar 31, and the second ends of the support rods 34 are connected to the connecting rods 33, and the angles formed between the support rods 34 and the flip cross bar 32 and the flip vertical bar 31 are obtuse angles.

[0045] Specifically, the support rod 34 is arranged to be inclined, and can be connected to the connecting rod 33 through the support rod 34 , and the connecting rod 33 is arranged below the guide rod 21 .

[0046] The present invention connects the first end of the support rod 34 to the connection point between the flip cross bar 32 and the flip vertical bar 31, and the second end of the support rod 34 is connected to the connecting rod 33, and the angle formed between the support rod 34 and the flip cross bar 32 and the flip vertical bar 31 is an obtuse angle, so that when the driving component 4 drives the connecting rod 33 to move, it can stably drive the flip cross bar 32 and the flip vertical bar 31 to rotate.

[0047] In one embodiment of the cigarette box bidirectional turning device of the present invention, Figure 1 to Figure 2 As shown, the flip assembly 3 also includes a fixed block 35 and a telescopic rod 36 . The fixed block 35 is fixed on the first fixed plate 22 . The first end of the telescopic rod 36 is movably connected to the fixed block 35 , and the second end of the telescopic rod 36 is movably connected to the flip vertical rod 31 .

[0048] Specifically, Figure 3As shown in (a) to (e), when the cigarette box 5 needs to be flipped from a lying position to a standing position, the control component detects the cigarette box 5 during the process of the conveyor 1 conveying the cigarette box 5 to the flip crossbar 32, and then controls the drive component 4 to drive the connecting rod 33 to move downward. At this time, the connecting rod 33 drives the flip crossbar 32 and the flip vertical rod 31 to rotate downward during the movement, and the flip vertical rod 31 gradually compresses the telescopic rod 36 during the downward rotation, and changes the position of the telescopic rod 36. When the connecting rod 33 drives multiple flip crossbars 32 and multiple flip vertical rods 31 to rotate 90 degrees, the telescopic rod 36 and the flip vertical rod 31 remain horizontal.

[0049] When the cigarette box 5 needs to be flipped from a standing position to a lying position, the control component detects the cigarette box 5 during the process of the conveyor 1 conveying the cigarette box 5 to the flip crossbar 32, and then controls the driving component 4 to drive the connecting rod 33 to move upward. At this time, the connecting rod 33 drives the flip crossbar 32 and the flip vertical rod 31 to rotate upward during the movement, and the flip vertical rod 31 gradually stretches the telescopic rod 36 during the upward rotation, and the position of the telescopic rod 36 changes. When the connecting rod 33 drives multiple flip crossbars 32 and multiple flip vertical rods 31 to rotate 90 degrees, the angle between the telescopic rod 36 and the flip vertical rod 31 is an acute angle.

[0050] The present invention fixes the fixing block 35 on the first fixing plate 22, such as Figure 1 to Figure 2 As shown, the first end of the telescopic rod 36 is movably connected to the fixed block 35, and the second end of the telescopic rod 36 is movably connected to the flip vertical rod 31, so that the telescopic rod 36 can make the rotation process of the flip cross bar 32 and the flip vertical rod 31 more stable.

[0051] It should be noted that the number of the telescopic rods 36 can be one or more, and is not limited here.

[0052] In one embodiment of the cigarette box bidirectional turning device of the present invention, Figures 1 to 4 As shown, the driving assembly 4 includes a driving cylinder 41 and a connecting shaft 42. The driving cylinder 41 is fixed on the second fixed plate 23. The output shaft of the driving cylinder 41 is connected to the first end of the connecting shaft 42. The second end of the connecting shaft 42 is connected to the middle position of the connecting rod 33.

[0053] The present invention fixes the driving cylinder 41 on the second fixed plate 23, the output shaft of the driving cylinder 41 is connected to the first end of the connecting shaft 42, the second end of the connecting shaft 42 is connected to the middle position of the connecting rod 33, and the connecting rod 33 is driven to move by the driving cylinder 41, thereby effectively improving the efficiency of flipping the flip cross bar 32 and the flip vertical bar 31.

[0054] In one embodiment of the cigarette box bidirectional turning device of the present invention, the angle between the connecting shaft 42 and the supporting rod 34 is less than 108 degrees.

[0055] Specifically, when the driving cylinder 41 is contracted to the shortest, the angle between the connecting shaft 42 and the supporting rod 34 is ensured to be less than 108 degrees, so as to ensure that the driving cylinder 41 can work stably.

[0056] In one embodiment of the cigarette box bidirectional flipping device of the present invention, the control component includes a controller and a first photoelectric switch. The first photoelectric switch is arranged on the side wall of the conveyor 1, and the first photoelectric switch is arranged at the center position of the connecting rod 33 mapped to the position of the side wall of the conveyor 1. The controller is respectively connected to the first photoelectric switch and the driving component 4.

[0057] Specifically, a first photoelectric switch is set at a position where the center position of the connecting rod 33 is mapped to the side wall of the conveyor 1. When the first photoelectric switch detects the cigarette box 5, at this time, the top of the cigarette box 5 reaches the center position of the connecting rod 33; the first photoelectric switch transmits the detection information to the controller, and the controller controls the driving cylinder 41 to start. Since the cigarette box 5 has a certain speed under the transportation of the conveyor 1, and the transportation speed of the conveyor 1 is slow, in the process of the driving cylinder 41 driving the flip cross bar 32 and the flip vertical bar 31, the cigarette box 5 will not move out from the flip cross bar 32, and at least it can ensure that most of the cigarette boxes 5 are located on the flip cross bar 32.

[0058] It should be noted that the operator can adjust the position of the first photoelectric switch according to the speed of the conveyor 1 to enable the cigarette box 5 to be located on the flip cross bar 32 .

[0059] The present invention sets a first photoelectric switch on the side wall of the conveyor 1, and the first photoelectric switch is set at the center position of the connecting rod 33 mapped to the position of the side wall of the conveyor 1, and the controller is connected to the first photoelectric switch and the driving component 4 respectively, and then the position of the cigarette box 5 is identified by the first photoelectric switch, and the driving cylinder 41 is driven by the controller, thereby realizing the automation and intelligence of the cigarette box bidirectional turning device of the present invention.

[0060] In one embodiment of the cigarette box bidirectional flipping device of the present invention, the control component also includes a second photoelectric switch, which is electrically connected to the controller. The second photoelectric switch is arranged on the side wall of the conveyor 1, and the second photoelectric switch is located below the first photoelectric switch along the conveying direction of the conveyor 1. The second photoelectric switch is used to detect the cigarette box 5.

[0061] Specifically, the height between the second photoelectric switch and the conveyor 1 is greater than the height of the cigarette box 5 and less than the length of the cigarette box 5 .

[0062] Furthermore, the second photoelectric switch can detect the cigarette box 5 to determine whether the cigarette box 5 is turned over successfully.

[0063] If the cigarette box bidirectional turning device of the present invention turns the cigarette box 5 from a lying position to a standing position, when the second photoelectric switch can detect the cigarette box 5, it means that the cigarette box 5 has turned from a lying position to a standing position. When the second photoelectric switch cannot detect the cigarette box 5, it means that the cigarette box 5 has failed to turn over. At this time, the second photoelectric switch transmits a signal to the controller, and the controller controls the conveyor 1 to stop working and sends an alarm to remind the operator.

[0064] If the cigarette box bidirectional turning device of the present invention turns the cigarette box 5 from a posture to a lying posture, when the second photoelectric switch cannot detect the cigarette box 5, it means that the cigarette box 5 has turned from a posture to a lying posture. When the second photoelectric switch can detect the cigarette box 5, it means that the cigarette box 5 has failed to turn over. At this time, the second photoelectric switch transmits a signal to the controller, and the controller controls the conveyor 1 to stop working and sends an alarm to remind the operator.

[0065] The present invention electrically connects the second photoelectric switch to the controller, the second photoelectric switch is arranged on the side wall of the conveyor 1, and the second photoelectric switch is located below the first photoelectric switch along the conveying direction of the conveyor 1, and the flipping result of the cigarette box 5 can be detected by the second photoelectric switch.

[0066] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A two-way turning device for a cigarette box, characterized in that: include: Conveyors, fixed components, turning components, drive components and control components; The fixing assembly is arranged on the conveyor, and the fixing assembly comprises a guide rod, both ends of which are respectively connected to the side walls of the conveyor, and the guide rods are arranged at intervals along the conveying direction of the conveyor; The flip assembly comprises a plurality of flip vertical rods, a plurality of flip cross rods and a connecting rod, wherein the flip vertical rods are vertically connected to the flip cross rods, and the connecting rods are respectively connected to the connection points of the plurality of flip cross rods and the plurality of flip vertical rods, the length direction of the flip cross rods is perpendicular to the conveying direction of the conveyor, the length direction of the connecting rods is parallel to the conveying direction of the conveyor, and the connecting rods are located below the guide rods and abut against the guide rods; The driving assembly is connected to the connecting rod and is used to drive the connecting rod to rotate; The control component is connected to the driving component, and the control component is used to detect the position of the smoke box and control the opening and closing of the driving component.

2. The two-way turning device for cigarette box according to claim 1, characterized in that: The fixing assembly further includes a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are respectively arranged on the side walls of the conveyor, and the first fixing plate and the second fixing plate are respectively connected to two ends of the guide rod.

3. The two-way turning device for cigarette box according to claim 2, characterized in that: The flip assembly also includes a plurality of support rods, wherein the first ends of the support rods are connected to the connection between the flip cross rod and the flip vertical rod, the second ends of the support rods are connected to the connecting rods, and the angles formed between the support rods and the flip cross rod and the flip vertical rod are obtuse angles.

4. The two-way turning device for cigarette box according to claim 2, characterized in that: The flip assembly also includes a fixed block and a telescopic rod, wherein the fixed block is fixed on the first fixed plate, the first end of the telescopic rod is movably connected to the fixed block, and the second end of the telescopic rod is movably connected to the flip vertical rod.

5. The two-way turning device for cigarette box according to claim 3, characterized in that: The driving assembly includes a driving cylinder and a connecting shaft. The driving cylinder is fixed on the second fixing plate. The output shaft of the driving cylinder is connected to the first end of the connecting shaft. The second end of the connecting shaft is connected to the middle position of the connecting rod.

6. The two-way turning device for cigarette boxes according to claim 5, characterized in that: The angle between the connecting shaft and the supporting rod is less than 108 degrees.

7. The two-way turning device for cigarette box according to claim 1, characterized in that: The control component includes a controller and a first photoelectric switch, wherein the first photoelectric switch is arranged on the side wall of the conveyor, and the first photoelectric switch is arranged at a center position of the connecting rod mapped to the position of the side wall of the conveyor, and the controller is respectively connected to the first photoelectric switch and the driving component.

8. The two-way turning device for cigarette boxes according to claim 7, characterized in that: The control component also includes a second photoelectric switch, which is electrically connected to the controller. The second photoelectric switch is arranged on the side wall of the conveyor and is located below the first photoelectric switch along the conveying direction of the conveyor. The second photoelectric switch is used to detect the cigarette box.

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