Monitoring and alarming device for heating strip of vacuum packaging machine

Abstract

The utility model relates to a monitoring and alarming device for a heating strip of a vacuum packaging machine. The monitoring and alarming device comprises a detection control circuit part and an alarming circuit part, the detection control circuit part is used for detecting the states of a first heating strip and a second heating strip on the vacuum packaging machine and sending out a control signal when any heating strip is broken; and the alarm circuit part is used for receiving the control signal and sending out an alarm prompt after receiving the control signal. According to the utility model, the state of the heating strip of the vacuum packaging machine can be monitored, and an alarm signal can be sent out when the heating strip is broken.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring heating strips of vacuum packaging machines, in particular to a monitoring and alarm device for heating strips of vacuum packaging machines. Background Art

[0002] The commonly used vacuum packaging machines do not have a heating strip break alarm function, and the heating strip status needs to be checked manually. If the heating strip breaks but is not replaced in time, the sealing effect will be reduced, and then air leakage will occur, making the sealing of the packaging bag worse. If the packaging bag is not found to be leaking, in serious cases, the product may completely lose vacuum during transportation, resulting in product scrapping and customer complaints. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a vacuum packaging machine heating strip monitoring alarm device, which can monitor the state of the vacuum packaging machine heating strip and send out an alarm signal when the heating strip is broken.

[0004] The technical solution adopted by the utility model to solve its technical problem is: to provide a vacuum packaging machine heating strip monitoring alarm device, including a detection control circuit part and an alarm circuit part; the detection control circuit part is used to detect the status of the first heating strip and the second heating strip on the vacuum packaging machine, and send out a control signal when any heating strip is broken; the alarm circuit part is used to receive the control signal and send out an alarm prompt after receiving the control signal.

[0005] The detection control circuit part detects the status of the first heating bar and the second heating bar through the current signals on the first heating bar and the second heating bar.

[0006] The detection control circuit part includes a first current transmitter, a second current transmitter, a first relay and a second relay; the first current transmitter is installed on the circuit of the first heating strip, and the second current transmitter is installed on the circuit of the second heating strip; the first current transmitter is also connected in series with the first relay, and the second current transmitter is also connected in series with the second relay; when the first heating strip is normal, the current on the first current transmitter energizes the first relay, and when the first heating strip is broken, there is no current on the first current transmitter, and the first relay loses power; when the second heating strip is normal, the current on the second current transmitter energizes the second relay, and when the second heating strip is broken, there is no current on the second current transmitter, and the second relay loses power.

[0007] The alarm prompts issued by the alarm circuit part include light prompts and sound prompts.

[0008] The alarm circuit part includes a first circuit and a second circuit connected in parallel, the first circuit is provided with a first normally open switch associated with the first relay, a second normally open switch associated with the second relay and a first LED, and the first normally open switch, the second normally open switch and the first LED are connected in series in sequence; the second circuit is provided with a first normally closed switch associated with the first relay, a second normally closed switch associated with the second relay, a buzzer and a second LED; the first normally closed switch and the second normally closed switch are connected in parallel and then connected in series with the buzzer and the second LED.

[0009] Beneficial Effects

[0010] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art: the utility model adds a current transmitter to the circuit of the heating strip, and connects the current transmitter in series with the relay. When the heating strip is broken, the relay can be controlled by the current transmitter, so that the switch corresponding to the relay performs corresponding actions, thereby realizing the state monitoring and alarm of the heating strip, thereby 100% eliminating the problem of poor packaging sealing caused by untimely replacement of the broken heating strip. The utility model improves the current situation of manual inspection of the heating strip, reduces the labor cost of this station, reduces the occurrence of packaging production line defects, and improves the production efficiency of the packaging production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a circuit diagram of the detection control circuit part in the implementation mode of the utility model;

[0012] Figure 2 It is a circuit diagram of the alarm circuit part in the implementation mode of the utility model. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0014] The embodiment of the utility model relates to a vacuum packaging machine heating strip monitoring alarm device, comprising a detection control circuit part and an alarm circuit part; the detection control circuit part is used to detect the status of a first heating strip and a second heating strip on the vacuum packaging machine, and send a control signal when any heating strip is broken; the alarm circuit part is used to receive the control signal, and send an alarm prompt after receiving the control signal.

[0015] In this embodiment, the detection control circuit part detects the state of the first heating bar and the second heating bar through the current signal on the first heating bar and the second heating bar. Figure 1 As shown, the detection control circuit part includes a first current transmitter M1, a second current transmitter M2, a first relay KA1 and a second relay KA2; the first current transmitter M is installed on the circuit of the first heating strip R1, and the second current transmitter is installed on the circuit of the second heating strip R2; the first current transmitter M1 is also connected in series with the first relay KA1, and the second current transmitter M2 is also connected in series with the second relay KA2; when the first heating strip R1 is normal, the current on the first current transmitter M1 energizes the first relay KA1, and when the first heating strip R1 is broken, there is no current on the first current transmitter M1, and the first relay KA1 loses power; when the second heating strip R2 is normal, the current on the second current transmitter M2 energizes the second relay KA2, and when the second heating strip R2 is broken, there is no current on the second current transmitter M2, and the second relay KA2 loses power.

[0016] The alarm prompts issued by the alarm circuit in this embodiment include light prompts and sound prompts. Figure 2 As shown, the alarm circuit part includes a first circuit and a second circuit connected in parallel, and the first circuit is provided with a first normally open switch KA1-1 associated with the first relay, a second normally open switch KA2-1 associated with the second relay and a green light LED, and the first normally open switch KA1-1, the second normally open switch KA2-1 and the green light LED are connected in series in sequence; the second circuit is provided with a first normally closed switch KA1-2 associated with the first relay, a second normally closed switch KA2-2 associated with the second relay, a buzzer and a red light LED; the first normally closed switch KA1-2 and the second normally closed switch KA2-2 are connected in parallel and then connected in series with the buzzer and the second LED.

[0017] Figure 2 K in the figure is the switch for controlling heating in the original circuit of the vacuum packaging machine.

[0018] The working principle of the heating strip monitoring and alarm device for a vacuum packaging machine in this embodiment is as follows: the vacuum packaging machine starts heating and the switch K is closed.

[0019] When the first heating strip R1 and the second heating strip R2 are both normal, current flows through the two circuits of the first heating strip R1 and the second heating strip R2. Current flows through the first current transmitter M1 and the second current transmitter M2, so that the first relay KA1 and the second relay KA2 are energized. The first relay KA1 is energized, so that the first normally open switch KA1-1 is closed and the first normally closed switch KA1-2 is disconnected; the second relay KA2 is energized, so that the second normally open switch KA2-1 is closed and the second normally closed switch KA2-2 is disconnected. At this time, the green LED is on, the red LED is off, and the buzzer does not work.

[0020] When the first heating strip R1 is normal and the second heating strip R2 is broken, current flows through the circuit of the first heating strip R1, but no current flows through the circuit of the second heating strip R2. Current flows through the first current transmitter M1, but no current flows through the second current transmitter M2, so that the first relay KA1 is energized and the second relay KA2 is not energized. The first relay KA1 is energized, so that the first normally open switch KA1-1 is closed and the first normally closed switch KA1-2 is opened. Because the second relay KA2 is not energized, the second normally open switch KA2-1 remains opened and the second normally closed switch KA2-2 remains closed, the green LED goes out, the red LED turns on, and the buzzer works.

[0021] When the first heating strip R1 is broken and the second heating strip R2 is normal, no current flows through the circuit of the first heating strip R1, while current flows through the circuit of the second heating strip R2. There is no current on the first current transmitter M1, and there is current on the second current transmitter, so that the first relay KA1 is not powered and the second relay KA2 is powered. The first relay KA1 is not powered, so that the first normally open switch KA1-1 remains open and the first normally closed switch KA1-2 remains closed; the second relay KA2 is powered, and then the second normally open switch KA2-1 is closed, the second normally closed switch KA2-2 is open, the green LED is off, the red LED is on, and the buzzer works.

[0022] When both the first heating strip R1 and the second heating strip R2 are broken, no current flows through the circuits of the first heating strip R1 and the second heating strip R2. No current flows through the first current transducer M1 and the second current transducer M2, so that the first relay KA1 and the second relay KA2 are de-energized. The first relay KA1 is de-energized, so the first normally open switch KA1-1 remains disconnected and the first normally closed switch KA1-2 remains closed; the second relay KA2 is de-energized, and then the second normally open switch KA2-1 remains disconnected and the second normally closed switch KA2-2 remains closed, the green LED goes out, the red LED turns on, and the buzzer works.

[0023] In summary, if any one of the first heating strip R1 and the second heating strip R2 is broken, the device can realize the alarm function.

[0024] It is not difficult to find that the utility model adds a current transmitter to the circuit of the heating strip, and connects the current transmitter in series with the relay. When the heating strip breaks, the relay can be controlled by the current transmitter, so that the switch corresponding to the relay performs corresponding actions, thereby realizing the state monitoring and alarm of the heating strip, thereby 100% eliminating the problem of poor packaging sealing caused by untimely replacement of the broken heating strip. The utility model improves the current situation of manual inspection of the heating strip, reduces the labor cost of this station, reduces the occurrence of packaging production line defects, and improves the production efficiency of the packaging production line.

Claims

1. A vacuum packaging machine heating strip monitoring alarm device, characterized in that: It includes a detection control circuit part and an alarm circuit part; the detection control circuit part is used to detect the status of the first heating strip and the second heating strip on the vacuum packaging machine, and send out a control signal when any heating strip is broken; the alarm circuit part is used to receive the control signal and send out an alarm prompt after receiving the control signal.

2. The vacuum packaging machine heating strip monitoring and alarm device according to claim 1, characterized in that: The detection control circuit part detects the status of the first heating bar and the second heating bar through the current signals on the first heating bar and the second heating bar.

3. The vacuum packaging machine heating strip monitoring and alarm device according to claim 1, characterized in that: The detection control circuit part includes a first current transmitter, a second current transmitter, a first relay and a second relay; the first current transmitter is installed on the circuit of one heating strip, and the second current transmitter is installed on the circuit of another heating strip; the first current transmitter is also connected in series with the first relay, and the second current transmitter is also connected in series with the second relay; when the first heating strip is normal, the current on the first current transmitter energizes the first relay, and when the first heating strip is broken, there is no current on the first current transmitter, and the first relay loses power; when the second heating strip is normal, the current on the second current transmitter energizes the second relay, and when the second heating strip is broken, there is no current on the second current transmitter, and the second relay loses power.

4. The vacuum packaging machine heating strip monitoring and alarm device according to claim 1, characterized in that: The alarm prompts issued by the alarm circuit part include light prompts and sound prompts.

5. The vacuum packaging machine heating strip monitoring and alarm device according to claim 3, characterized in that: The alarm prompts issued by the alarm circuit part include light prompts and sound prompts.

6. The vacuum packaging machine heating strip monitoring and alarm device according to claim 5, characterized in that: The alarm circuit part includes a first circuit and a second circuit connected in parallel, the first circuit is provided with a first normally open switch associated with the first relay, a second normally open switch associated with the second relay and a first LED, and the first normally open switch, the second normally open switch and the first LED are connected in series in sequence; the second circuit is provided with a first normally closed switch associated with the first relay, a second normally closed switch associated with the second relay, a buzzer and a second LED; the first normally closed switch and the second normally closed switch are connected in parallel and then connected in series with the buzzer and the second LED.

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