Automatic Identification and Rejection System for Bottomless Milk Powder Cans

Abstract

The present invention belongs to the technical field of production canning systems, and discloses an automatic recognition and rejection system for milk powder cans without bottom covers. It includes a detection unit for detecting the barrel body and the bottom cover of the milk powder can, a rejection cylinder, and a power supply unit. The power supply unit is electrically connected to the detection unit to provide power for the detection unit. The output end of the detection unit is connected to the input end of the rejection cylinder to control the extension or reset of the rejection cylinder. The present invention is applicable to automatically recognizing milk powder cans without bottom covers and rejecting them. On the production line, it can automatically recognize milk powder cans without bottom covers and reject them, improving production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of production canning systems, and particularly relates to an automatic identification and rejection system for bottomless and lidless milk powder cans. Background Art

[0002] Infants and young children have a relatively large demand for milk powder in daily life. Therefore, it is necessary to store milk powder in milk powder cans. After the bottom and lid of the milk powder can are pre-sealed, there is a risk that the bottom and lid may fail to seal and fall off. Therefore, on the production line of milk powder, if the milk powder can has no bottom and lid and the staff fails to check it in time, the milk powder can will flow into the next section, which will not only affect the operation of the equipment, but may even directly enter the warehouse, resulting in market complaint incidents. At present, some components of some packaging machines on the market have been able to realize the function of detecting whether the milk powder can has a bottom and lid and rejecting it, but they cannot be separated from the whole packaging machine alone. Therefore, a system that can automatically identify the bottom and lid of the milk powder can and automatically reject it on the production line is needed to improve production efficiency. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide an automatic identification and rejection system for bottomless and lidless milk powder cans, so as to be able to automatically identify the milk powder cans without bottom and lid on the production line and reject them, thereby improving production efficiency.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] The automatic identification and rejection system for bottomless and lidless milk powder cans includes a detection unit for detecting the body and bottom and lid of the milk powder can, a rejection cylinder, and a power supply unit. The power supply unit is electrically connected to the detection unit to provide power for the detection unit. The output end of the detection unit is connected to the input end of the rejection cylinder to control the extension or reset of the rejection cylinder.

[0006] As a limitation, the detection unit includes a proximity switch SP, a photoelectric switch SQ, a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, a time relay KT, a counter CT, and a solenoid valve YV;

[0007] One end of the photoelectric switch SQ and the proximity switch SP is connected to the positive pole of the power supply unit. The other end of the photoelectric switch SQ is connected to one end of the coil KA1-1 of the first intermediate relay. The other end of the coil KA1-1 of the first intermediate relay is connected to the negative pole of the power supply unit. The other end of the proximity switch SP is connected to one end of the coil KA2-1 of the second intermediate relay. The other end of the coil KA2-1 of the second intermediate relay is connected to the negative pole of the power supply unit;

[0008] One end of the normally open contact KA1-2 of the first intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the normally closed contact KA2-2 of the second intermediate relay. The other end of the normally closed contact KA2-2 of the second intermediate relay is connected to one end of the coil KA3-1 of the third intermediate relay, the coil KT-1 of the time relay, and the normally closed contact KAT-3 of the time relay. The other ends of the coil KA3-1 of the third intermediate relay and the coil KT-1 of the time relay are connected to the negative pole of the power supply unit; the other end of the normally closed contact KAT-3 of the time relay is connected to one end of the normally open contact KA3-2 of the third intermediate relay, and the other end of the normally open contact KA3-2 of the third intermediate relay is connected to the positive pole of the power supply unit;

[0009] One end of the normally open contact KA3-3 of the third intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the solenoid valve YV. The other end of the solenoid valve YV is connected to the negative pole of the power supply unit; the output end of the solenoid valve YV is connected to the rejection cylinder;

[0010] One end of the normally open contact KAT-2 of the relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the counter CT. The other end of the counter CT is connected to the negative pole of the power supply unit.

[0011] Due to the adoption of the above technical solution, compared with the prior art, the technical progress achieved by the present invention is as follows:

[0012] (1) The present invention detects whether there is a milk powder can through a photoelectric switch and detects whether there is a bottom cover through a proximity switch. When it detects that the milk powder can has no bottom cover, it automatically identifies and automatically rejects the milk powder can, improving the production efficiency;

[0013] (2) The present invention can timely detect whether the milk powder can has a bottom cover, avoiding the problem that it may flow into the next process section, affecting the operation of the equipment, or may directly enter the warehouse, resulting in market complaints;

[0014] (3) The present invention is easy to operate, time-saving and labor-saving, can reduce the workload of the staff, and avoid occupying a large amount of time of the staff.

[0015] The present invention belongs to the technical field of production canning systems and is applicable to automatically identifying milk powder cans without bottom covers and rejecting them. Description of the Drawings

[0016] Figure 1 It is the circuit schematic diagram of the embodiment of the present invention. Detailed Embodiment

[0017] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0018] Example: Automatic Identification and Rejection System for Bottomless and Lidless Milk Powder Cans

[0019] As Figure 1 shown in the figure, this embodiment includes a detection unit for detecting the body and the bottom lid of the milk powder can, a rejection cylinder, and a power supply unit. Among them, the power supply unit is electrically connected to the detection unit to provide power for the detection unit, and the output end of the detection unit is connected to the input end of the rejection cylinder to control the extension or reset of the rejection cylinder.

[0020] In this embodiment, the detection unit includes a proximity switch SP, a photoelectric switch SQ, a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, a time relay KT, a counter CT, and a solenoid valve YV.

[0021] Among them, one end of the photoelectric switch SQ and the proximity switch SP is connected to the positive pole of the power supply unit. The other end of the photoelectric switch SQ is connected to one end of the coil KA1-1 of the first intermediate relay. The other end of the coil KA1-1 of the first intermediate relay is connected to the negative pole of the power supply unit. The other end of the proximity switch SP is connected to one end of the coil KA2-1 of the second intermediate relay. The other end of the coil KA2-1 of the second intermediate relay is connected to the negative pole of the power supply unit. One end of the normally open contact KA1-2 of the first intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the normally closed contact KA2-2 of the second intermediate relay. The other end of the normally closed contact KA2-2 of the second intermediate relay is connected to one end of the coil KA3-1 of the third intermediate relay, the coil KT-1 of the time relay, and the normally closed contact KAT-3 of the time relay. The other ends of the coil KA3-1 of the third intermediate relay and the coil KT-1 of the time relay are connected to the negative pole of the power supply unit. The other end of the normally closed contact KAT-3 of the time relay is connected to one end of the normally open contact KA3-2 of the third intermediate relay. The other end of the normally open contact KA3-2 of the third intermediate relay is connected to the positive pole of the power supply unit. One end of the normally open contact KA3-3 of the third intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the solenoid valve YV. The other end of the solenoid valve YV is connected to the negative pole of the power supply unit, and the output end of the solenoid valve YV is connected to the rejection cylinder. One end of the normally open contact KAT-2 of the relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the counter CT. The other end of the counter CT is connected to the negative pole of the power supply unit.

[0022] The working principle of this embodiment is as follows: When the milk powder can passes through on the conveyor belt, the photoelectric switch SQ will detect the body of the milk powder can, and the proximity switch SP will detect the bottom cover of the milk powder can; When the photoelectric switch SQ detects the milk powder can and at the same time the proximity switch SP detects the bottom cover of the milk powder can, the photoelectric switch SQ and the proximity switch SP close, causing the coil KA1-1 of the first intermediate relay to be energized to generate magnetic force and causing the coil KA2-1 of the second intermediate relay to be energized to generate magnetic force; After the coil KA1-1 of the first intermediate relay and the coil KA2-1 of the second intermediate relay are energized, the normally open contact KA1-2 of the first intermediate relay closes, and the normally closed contact KA2-2 of the second intermediate relay opens; Thus, the coil KA3-1 of the third intermediate relay is not energized, and the solenoid valve YV is not energized. Since the solenoid valve YV controls the ejection cylinder and the solenoid valve YV is not energized, the ejection cylinder does not extend. When the milk powder can passes through, the photoelectric switch SQ and the proximity switch SP change from the closed state to the open state.

[0023] When the photoelectric switch SQ detects the milk powder can and at the same time the proximity switch SP does not detect the bottom cover of the milk powder can, the photoelectric switch SQ closes, the proximity switch SP is in the open state, the coil KA1-1 of the first intermediate relay is energized to generate magnetic force, and the coil KA2-1 of the second intermediate relay is not energized; At this time, the normally open contact KA1-2 of the first intermediate relay closes, and the normally closed contact KA2-2 of the second intermediate relay does not act. Thus, the coil KA3-1 of the third intermediate relay is energized to generate magnetic force, causing the normally open contacts KA3-2 and KA3-3 of the third intermediate relay to close. Since the normally open contact KA3-3 of the third intermediate relay closes, the solenoid valve YV is energized. Since the solenoid valve YV controls the ejection cylinder, after the solenoid valve YV is energized, it controls the ejection cylinder to extend, and the milk powder can without a bottom cover is ejected onto the ejection platform set at the position corresponding to the ejection cylinder. At the same time, since the normally open contact KA3-2 of the third intermediate relay closes, the coil KT-1 of the time relay is energized, the normally closed contact KT-3 of the time relay is opened, the normally open contact KT-2 of the time relay is closed, and the counter CT conducts and counts once;

[0024] After 0.5 s, the coil KT-1 of the time relay is automatically de-energized, the normally open contact KT-2 of the time relay is opened, the normally closed contact KT-3 of the time relay is closed, and the counter CT is disconnected and stops counting. When the milk powder can without a bottom cover is kicked out, the photoelectric switch SQ cannot detect the milk powder can, and at the same time the proximity switch SP cannot detect the bottom cover of the milk powder can. At this time, the photoelectric switch SQ and the proximity switch SP change from the closed state to the open state, the coil KA3-1 of the third intermediate relay is de-energized, and at this time the normally open contacts KA3-2 and KA3-3 of the third intermediate relay change from the closed state to the normally open state, the solenoid valve YV is de-energized, and the ejection cylinder resets.

[0025] When there is no milk powder can passing on the conveyor belt, the photoelectric switch SQ will not detect the milk powder can, and the proximity switch SP will not detect the bottom cover of the milk powder can either. At this time, the coil KA1-1 of the first intermediate relay is not energized, and the coil KA2-1 of the second intermediate relay is not energized, and the overall circuit does not operate.

[0026] In this embodiment, the delay time of the time relay is set to 0.5 s, and in practical applications, it can be set according to the actual situation.

Claims

1. An automatic recognition and rejection system for bottomless lids of milk powder cans, characterized in that, it comprises a detection unit for detecting the body and bottom lid of the milk powder can, a rejection cylinder and a power supply unit. The power supply unit is electrically connected to the detection unit to supply power to the detection unit. The output end of the detection unit is connected to the input end of the rejection cylinder to control the extension or reset of the rejection cylinder; the detection unit includes a proximity switch SP, a photoelectric switch SQ, a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, a time relay KT, a counter CT, and a solenoid valve YV; one end of the photoelectric switch SQ and the proximity switch SP is connected to the positive pole of the power supply unit. The other end of the photoelectric switch SQ is connected to one end of the coil KA1-1 of the first intermediate relay. The other end of the coil KA1-1 of the first intermediate relay is connected to the negative pole of the power supply unit; the other end of the proximity switch SP is connected to one end of the coil KA2-1 of the second intermediate relay. The other end of the coil KA2-1 of the second intermediate relay is connected to the negative pole of the power supply unit; one end of the normally open contact KA1-2 of the first intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the normally closed contact KA2-2 of the second intermediate relay. The other end of the normally closed contact KA2-2 of the second intermediate relay is connected to one end of the coil KA3-1 of the third intermediate relay, the coil KT-1 of the time relay, and the normally closed contact KAT-3 of the time relay. The other ends of the coil KA3-1 of the third intermediate relay and the coil KT-1 of the time relay are connected to the negative pole of the power supply unit; the other end of the normally closed contact KAT-3 of the time relay is connected to one end of the normally open contact KA3-2 of the third intermediate relay. The other end of the normally open contact KA3-2 of the third intermediate relay is connected to the positive pole of the power supply unit; one end of the normally open contact KA3-3 of the third intermediate relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the solenoid valve YV. The other end of the solenoid valve YV is connected to the negative pole of the power supply unit; the output end of the solenoid valve YV is connected to the rejection cylinder; one end of the normally open contact KAT-2 of the relay is connected to the positive pole of the power supply unit, and the other end is connected to one end of the counter CT. The other end of the counter CT is connected to the negative pole of the power supply unit.

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