A reject device for a packaging machine

Abstract

This utility model discloses a rejection device for a packaging machine. It includes: a photoelectric detection unit, a control unit, and a relay; the packaging machine includes a conveying device; the adhesive-coated carton is mounted on the conveying device; the packaging machine also includes a missing package detection unit and a missing package detection controller; the photoelectric signal output terminal of the photoelectric detection unit is electrically connected to the photoelectric signal receiving terminal of the control unit; the closed signal output terminal of the control unit is electrically connected to the control terminal of the relay; the missing package signal output terminal of the missing package detection unit is electrically connected to the first normally closed contact of the relay, and the second normally closed contact of the relay is electrically connected to the missing package signal receiving terminal of the missing package detection controller; the missing package detection controller also includes a rejection signal output terminal. The technical solution of this utility model, through the setting of the photoelectric detection unit, relay, and control unit, allows for the continued rejection of adhesive-coated carton paper after the cigarette packs have been rejected and stopped, thereby preventing the adhesive-coated cartons that have lost their adhesiveness from entering subsequent processes and affecting the quality of the packaged cigarette packs.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, and in particular to a rejection device for a packaging machine. Background Technology

[0002] After the packaging machine stops, because the carton glue cylinder is not equipped with a separate shutdown stirring device, the glue on the carton paper loses its stickiness after being applied. However, the equipment program only removes the carton paper that has lost its stickiness in the channel by default. As a result, the carton paper that has been glued but not yet packaged is not firmly glued after packaging and enters the subsequent process. Utility Model Content

[0003] This invention provides a rejection device for a packaging machine to solve the problem that existing packaging machines have difficulty identifying and rejecting strips of paper that have lost their adhesiveness.

[0004] The rejection device for a packaging machine according to the present invention includes: a photoelectric detection unit, a control unit, and a relay;

[0005] The packaging machine includes a conveying device; a box with adhesive strips is mounted on the conveying device; the conveying device is used to drive the box with adhesive strips to move along a first direction on a first plane;

[0006] The photoelectric detection unit is mounted on the frame of the conveying device, and the detection light of the photoelectric detection unit is emitted along the second direction; the second direction is parallel to the first plane, and the projection of the second direction onto the first plane overlaps with the first direction;

[0007] The packaging machine also includes a missing package detection unit and a missing package detection controller;

[0008] The photoelectric signal output terminal of the photoelectric detection unit is electrically connected to the photoelectric signal receiving terminal of the control unit; the closed signal output terminal of the control unit is electrically connected to the control terminal of the relay; the missing package signal output terminal of the missing package detection unit is electrically connected to the first normally closed contact of the relay, and the second normally closed contact of the relay is electrically connected to the missing package signal receiving terminal of the missing package detection controller; the missing package detection controller also includes a rejection signal output terminal.

[0009] Optionally, the photoelectric detection unit includes a first photoelectric switch and a second photoelectric switch;

[0010] Both the first and second photoelectric switches are mounted on the frame; along the third direction, the distance between the first and second photoelectric switches is less than the size of the adhesive strip box.

[0011] Optionally, the first photoelectric switch is located at the top of the frame; the second photoelectric switch is located at the bottom of the frame.

[0012] Optionally, both the first and second photoelectric switches are fastened to the frame with screws.

[0013] Optionally, a counter may also be included;

[0014] The counter is connected in series between the closed signal output terminal and the control terminal. When the number of times the closed signal is received reaches a preset number, the loop between the closed signal output terminal and the control terminal is opened.

[0015] Optional, the preset number of attempts is 6.

[0016] Optionally, the counter is fastened to the lower folder of the packaging machine by screws.

[0017] Optionally, the control unit includes a processor and a timer;

[0018] The processor includes a photoelectric signal receiver and a timing signal output; the delay unit includes a timing signal receiver and a closed signal output; the timing signal output and the timing signal receiver are electrically connected.

[0019] Optionally, the control unit may also include a stop signal receiver;

[0020] The stop signal receiver is electrically connected to the stop signal output of the packaging machine.

[0021] Optionally, the closed signal output from the closed signal output terminal is a 24V voltage signal.

[0022] The technical solution of this utility model, through the setting of photoelectric detection unit, relay and control unit, can continue to remove the adhesive carton paper after the cigarette packs have been removed from the machine, thereby preventing the adhesive carton paper that has lost its adhesiveness from entering the subsequent process and affecting the quality of the packaged cigarette packs; the removal device is combined with the missing pack detection, and when the adhesive carton paper is detected, it is converted into a missing pack signal and sent to the missing pack signal controller to achieve accurate removal of the adhesive carton paper.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a rejection device for a packaging machine according to an embodiment of the present utility model;

[0026] Figure 2 This is a circuit connection diagram of the rejection device of the first type of packaging machine according to an embodiment of the present utility model;

[0027] Figure 3 This is a circuit connection diagram of the rejection device of the second type of packaging machine provided according to an embodiment of the present utility model. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Figure 1 This is a schematic diagram of the structure of a rejection device for a packaging machine according to an embodiment of the present utility model. Figure 2 This is a circuit connection diagram of the rejection device of the first type of packaging machine according to an embodiment of the present utility model. Figure 3 This is a circuit connection diagram of the rejection device of a second type of packaging machine according to an embodiment of the present utility model. (In conjunction with...) Figure 1 , Figure 2 and Figure 3 As shown, the rejection device of the packaging machine includes:

[0031] Photoelectric detection unit 1, control unit 2, and relay 3;

[0032] The packaging machine includes a conveying device 4; a box with adhesive strips 5 is mounted on the conveying device 4; the conveying device 4 is used to drive the box with adhesive strips 5 to move along a first direction x in a first plane;

[0033] The photoelectric detection unit 1 is mounted on the frame of the conveying device 4. The detection light of the photoelectric detection unit 1 is emitted along the second direction. The second direction is parallel to the first plane, and the projection of the second direction onto the first plane overlaps with the first direction x.

[0034] The packaging machine also includes a missing package detection unit 6 and a missing package detection controller 7;

[0035] The photoelectric signal output terminal of the photoelectric detection unit 1 is electrically connected to the photoelectric signal receiving terminal of the control unit 2; the closed signal output terminal of the control unit 2 is electrically connected to the control terminal of the relay 3; the missing package signal output terminal of the missing package detection unit 6 is electrically connected to the first normally closed contact of the relay 3, and the second normally closed contact of the relay 3 is electrically connected to the missing package signal receiving terminal of the missing package detection controller 7; the missing package detection controller 7 also includes a rejection signal output terminal.

[0036] The principle of the photoelectric detection unit 1 can be based on the propagation and reception of light. The photoelectric detection unit 1 is fixedly installed on the frame of the conveying device 4. According to the installation position of the photoelectric detection unit 1, it detects whether there is a box 5 with adhesive strip passing by on the conveying device 4.

[0037] The packaging machine is used to package cigarette cartons. Since the packaging is done in cartons, a glue cylinder is installed in the machine to provide glue for the packaging. The glued carton 5 can be a carton paper that has been coated with glue but not yet packaged. When the packaging machine stops, the packaging process ceases, and the glued carton 5 appears on the conveyor 4. When the packaging machine is running normally, the conveyor 4 transports the packaged cigarette cartons. The conveyor 4 transports the glued carton 5 along a first direction x on a first plane. In the prior art, after the packaging machine stops, the packaging will not be firmly attached because the glue cylinder of the carton does not have a separate stopping and stirring device. The cigarette packs on the conveyor device 4 will be removed after the machine stops. However, the equipment only removes cigarette packs by default but cannot remove the carton paper that has been coated with glue. Therefore, in this embodiment of the utility model, the photoelectric detection unit 1 monitors the glued carton 5 on the conveyor device 4 in real time. The photoelectric detection unit 1 emits detection light along the second direction. When the glued carton 5 passes the detection light along the first direction x, the photoelectric detection unit 1 receives the photoelectric signal and inputs it into the control unit 2 through the photoelectric signal output terminal.

[0038] The closed signal output terminal can be used to output a closed signal to control the normally closed contact of relay 3 to close. The closed signal output terminal of control unit 2 is electrically connected to the control terminal of relay 3. The control terminal of relay 3 can be the coil control terminal of relay 3. After receiving the closed signal, the control terminal of relay 3 controls the normally closed contact to close.

[0039] The missing package detection unit 6 is electrically connected to the missing package detection controller 7, and is used to output a missing package signal to the missing package detection controller 7, thereby causing the missing package detection controller 7 to output a rejection signal. The missing package signal output terminal of the missing package detection unit 6 is electrically connected to the first normally closed contact of the relay 3, and the second normally closed contact of the relay 3 is electrically connected to the missing package signal receiving terminal of the missing package detection controller 7. After receiving the closing signal, the relay 3 controls the normally closed contact to close, so that the missing package detection unit 6 and the missing package detection controller 7 are connected, thereby allowing the missing package signal to be transmitted to the missing package detection controller 7. Upon receiving the missing package signal, the missing package detection controller 7 outputs a rejection signal from its rejection signal output terminal to control the rejection of the adhesive strip box 5.

[0040] The technical solution of this utility model embodiment, through the setting of photoelectric detection unit 1, relay 3 and control unit 2, can continue to remove the paper with adhesive strip 5 after the cigarette packs have been removed from the machine, thereby preventing the paper with adhesive strip 5 that has lost its adhesiveness from entering the subsequent process and affecting the quality of the packaged cigarette packs; the removal device is combined with the missing pack detection, and when the paper with adhesive strip 5 is detected, it is converted into a missing pack signal and sent to the missing pack signal controller to achieve accurate removal of the paper with adhesive strip 5.

[0041] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the photoelectric detection unit 1 includes a first photoelectric switch 11 and a second photoelectric switch 12;

[0042] The first photoelectric switch 11 and the second photoelectric switch 12 are both mounted on the frame; along the third direction z, the distance between the first photoelectric switch 11 and the second photoelectric switch 12 is less than the size of the adhesive strip box 5.

[0043] In this system, both the first photoelectric switch 11 and the second photoelectric switch 12 can be used to emit detection light along the second direction. The third direction z can be the height direction of the adhesive strip box 5. To ensure the detection accuracy of the photoelectric detection unit 1, two photoelectric switches are set up. Both the first photoelectric switch 11 and the second photoelectric switch 12 are mounted on the frame, and the distance between the first photoelectric switch 11 and the second photoelectric switch 12 along the third direction z is less than the size of the adhesive strip box 5, ensuring that the adhesive strip box 5 can be detected and avoiding missed detections.

[0044] It is understandable that regardless of whether the first photoelectric switch 11 or the second photoelectric switch 12 is triggered, a photoelectric signal can be output to the control unit 2.

[0045] The technical solution of this utility model embodiment, by setting a first photoelectric switch 11 and a second photoelectric switch 12, with the distance between the first photoelectric switch 11 and the second photoelectric switch 12 being less than the size of the adhesive strip box 5, ensures the accuracy and reliability of the detection of the adhesive strip box 5.

[0046] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the first photoelectric switch 11 is located at the top of the frame; the second photoelectric switch 12 is located at the bottom of the frame.

[0047] The first photoelectric switch 11 is placed at the top of the frame, and the second photoelectric switch 12 is placed at the bottom of the frame to avoid missed detections and false detections, and to ensure the accuracy and reliability of the detection of the adhesive strip box 5.

[0048] In some embodiments, both the first photoelectric switch 11 and the second photoelectric switch 12 are fastened to the frame with screws. For example, holes are drilled in the frame, and the first photoelectric switch 11 and the second photoelectric switch 12 are respectively fastened with four screws through the holes to ensure the stability and reliability of the first photoelectric switch 11 and the second photoelectric switch 12.

[0049] The technical solution of this utility model embodiment, through the setting of photoelectric detection unit, relay and control unit, can continue to remove the adhesive carton paper after the cigarette packs have been removed from the machine, thereby preventing the adhesive carton paper that has lost its adhesiveness from entering the subsequent process and affecting the quality of the packaged cigarette packs; the removal device is combined with the missing pack detection, and when the adhesive carton paper is detected, it is converted into a missing pack signal and sent to the missing pack signal controller to achieve accurate removal of the adhesive carton paper.

[0050] Optional, continue to refer to Figure 1 , Figure 2 , Figure 3 As shown, it also includes counter 8;

[0051] The counter 8 is connected in series between the closed signal output terminal and the control terminal. When the number of times the closed signal is received reaches a preset number, the circuit between the closed signal output terminal and the control terminal is opened.

[0052] In the prior art, if the packaging machine stops for more than a set time, the glue on the carton will dry out. The default program of the equipment will reject the preset number of cigarette cartons on the conveyor device 4. This results in a carton that has been coated with glue but has not been packaged being not firmly glued after packaging and entering the subsequent process. Since the photoelectric detection unit 1 cannot distinguish between cigarette cartons and carton 5 with glue, this utility model embodiment sets a counter 8. After a default preset number of times, a carton 5 with glue appears. The preset number of times can be set by experience.

[0053] In some embodiments, the preset number of times is 6.

[0054] For example, counter 8 is connected in series between the closed signal output terminal and the control terminal. When the packaging machine stops, the first photoelectric switch 11 or the second photoelectric switch 12 is triggered to output a photoelectric signal to the control unit 2. The control unit 2 outputs a closed signal to counter 8, and counter 8 starts to work. When counter 8 counts to 6, it connects the circuit between the closed signal output terminal and the control terminal, thereby causing the closed signal to be input to relay 3, and relay 3 starts to work.

[0055] The technical solution of this utility model embodiment includes both cigarette packs and adhesive-coated boxes 5 on the conveying device 4. By setting a counter 8, the degree of dryness of the adhesive-coated boxes 5 is determined according to a pre-experiment. A preset number of times is set for the counter 8. When the photoelectric signal input reaches the preset number of times, the circuit between the closed signal output terminal and the control terminal is closed, thereby accurately rejecting the adhesive-coated boxes 5, effectively preventing the occurrence of quality defect accidents and improving the product qualification rate.

[0056] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, counter 8 is fastened to the lower folder of the packaging machine by screws.

[0057] The lower folding device can be a component of the packaging machine for packaging the adhesive strip box 5. The counter 8 is fastened to the lower folding device of the packaging machine with screws to ensure the stability and reliability of the counter 8.

[0058] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, control unit 2 includes a processor and a delay unit;

[0059] The processor includes a photoelectric signal receiver and a timing signal output; the delay unit includes a timing signal receiver and a closed signal output; the timing signal output and the timing signal receiver are electrically connected.

[0060] Since the adhesive on the packaging strips needs time to dry after the packaging machine stops, a processor and a timer are included in control unit 2. The processor includes a photoelectric signal receiver and a timing signal output terminal. It receives photoelectric signals and outputs a timing signal based on these signals. The timer includes a timing signal receiver and a closing signal output terminal. When the timer receives the timing signal, it starts timing and outputs a closing signal after a preset time. The preset time can be determined based on the adhesive drying time, ensuring that the detection of strips that have lost their adhesiveness is achieved.

[0061] It is understood that the technical solution of this utility model embodiment, by setting a processor and a timer in the control unit 2, when the downtime exceeds the preset time, closes the signal input to the relay 3, controls the missing package detection unit 6 to output the missing package signal to accurately reject the glue strip box 5, which can effectively prevent the occurrence of quality defect accidents, improve the product qualification rate, enhance brand reputation, and at the same time, the structure is simple and reliable, and it is easy to implement and promote quickly.

[0062] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the control unit 2 also includes a stop signal receiver;

[0063] The stop signal receiver is electrically connected to the stop signal output of the packaging machine.

[0064] The stop signal receiving end is electrically connected to the stop signal output end of the packaging machine and can be used to receive the stop signal of the packaging machine.

[0065] Optionally, the closed signal output from the closed signal output terminal is a 24V voltage signal.

[0066] The closed signal output terminal outputs a 24V voltage signal to control the coil of relay 3 to be energized, thereby controlling the normally closed contact of relay 3 to close and triggering the relay 3 to operate.

[0067] For example, the first photoelectric switch 11 is installed at the top of the frame of the conveyor device 4, and the second photoelectric switch 12 is installed at the bottom of the frame of the conveyor device 4. This configuration ensures that the adhesive-coated box 5 can be detected regardless of its location after the packaging machine stops. To achieve the fusion of the signal from the delay rejection device counter 8 and the missing package signal, a relay 3 is added. The counter 8 signal controls the coil of the relay 3. When the equipment is operating normally, the control unit 2 does not reach the preset time and therefore does not output a closing signal. Consequently, the counter 8 does not receive or output a signal, and the relay 3 is not energized and therefore does not work. Its normally open contact closes, and the missing package signal from the missing package detection unit 6 is directly input to the missing package detection controller 7, thus not affecting the normal operation of the missing package detection. When the packaging machine stops, and the control unit 2 detects that the packaging machine has been stopped for a long time, the timer outputs a 24V voltage signal. The counter 8 receives the closing signal and starts working. When it counts to 6, the counter 8 outputs a closing signal, the relay 3 is energized, and its normally closed contact closes. The missing package detection controller 7 identifies the adhesive-coated box 5 as a missing cigarette pack, achieving accurate rejection.

[0068] After the rejection device of this utility model embodiment is installed on the packaging machine, the detection signal of the rejection device is integrated into the input point of the missing pack detection controller 7. When a defective cigarette stick signal is detected, it is converted into a missing pack signal and sent to the missing pack detection controller 7, so that the defective cigarette stick can be accurately rejected without affecting the normal use of the original missing pack detection.

[0069] The technical solution of this utility model, through the setting of photoelectric detection unit, relay and control unit, can continue to remove the adhesive carton paper after the cigarette packs have been removed from the machine, thereby preventing the adhesive carton paper that has lost its adhesiveness from entering the subsequent process and affecting the quality of the packaged cigarette packs; the removal device is combined with the missing pack detection, and when the adhesive carton paper is detected, it is converted into a missing pack signal and sent to the missing pack signal controller to achieve accurate removal of the adhesive carton paper.

[0070] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0071] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rejection device for a packaging machine, characterized in that, include: Photoelectric detection unit, control unit, and relay; The packaging machine includes a conveying device; a box with adhesive strips is disposed on the conveying device; the conveying device is used to drive the box with adhesive strips to move along a first direction on a first plane; The photoelectric detection unit is mounted on the frame of the conveying device, and the detection light of the photoelectric detection unit is emitted along a second direction; the second direction is parallel to the first plane, and the projection of the second direction onto the first plane overlaps with the first direction; The packaging machine also includes a missing package detection unit and a missing package detection controller; The photoelectric signal output terminal of the photoelectric detection unit is electrically connected to the photoelectric signal receiving terminal of the control unit; the closed signal output terminal of the control unit is electrically connected to the control terminal of the relay; the missing packet signal output terminal of the missing packet detection unit is electrically connected to the first normally closed contact of the relay, and the second normally closed contact of the relay is electrically connected to the missing packet signal receiving terminal of the missing packet detection controller; the missing packet detection controller also includes a rejection signal output terminal.

2. The rejection device according to claim 1, characterized in that, The photoelectric detection unit includes a first photoelectric switch and a second photoelectric switch; Both the first photoelectric switch and the second photoelectric switch are mounted on the frame; along a third direction, the distance between the first photoelectric switch and the second photoelectric switch is less than the size of the adhesive strip box.

3. The rejection device according to claim 2, characterized in that, The first photoelectric switch is located at the top of the frame; the second photoelectric switch is located at the bottom of the frame.

4. The rejection device according to claim 2, characterized in that, Both the first photoelectric switch and the second photoelectric switch are fastened to the frame with screws.

5. The rejection device according to claim 1, characterized in that, It also includes a counter; The counter is connected in series between the closed signal output terminal and the control terminal. When the number of times the closed signal is received reaches a preset number, the circuit between the closed signal output terminal and the control terminal is opened.

6. The rejection device according to claim 5, characterized in that, The preset number of times is 6.

7. The rejection device according to claim 5, characterized in that, The counter is fastened to the lower folder of the packaging machine by screws.

8. The rejection device according to claim 1, characterized in that, The control unit includes a processor and a timer; The processor includes a photoelectric signal receiving end and a timing signal output end; the delay unit includes a timing signal receiving end and a closed signal output end; the timing signal output end and the timing signal receiving end are electrically connected.

9. The rejection device according to claim 1, characterized in that, The control unit also includes a stop signal receiver; The stop signal receiving end is electrically connected to the stop signal output end of the packaging machine.

10. The rejection device according to claim 1, characterized in that, The closed signal output from the closed signal output terminal is a 24V voltage signal.

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