Pipeline forming vacuum detection alarm device

Abstract

The utility model relates to the technical field of pipeline manufacturing, and particularly discloses a pipeline forming vacuum detection alarm device which comprises an electric contact vacuum pressure gauge, a control circuit and an automatic packaging machine. The electric contact vacuum pressure gauge is electrically connected with the control circuit, and the control circuit is electrically connected with the automatic packaging machine. The control circuit comprises a first normally-open contact, a second normally-open contact, a third normally-open contact, a fourth normally-open contact, a fifth normally-open contact, a delay breaking normally-open contact, a normally-closed contact, a first normally-closed button, a second normally-closed button, a normally-open button, a first intermediate relay, a time relay, a vacuum abnormity alarm, an electromagnetic valve and a second intermediate relay. Specifically, one end of the first normally open contact is electrically connected with an electric contact vacuum pressure gauge. According to the utility model, unqualified products can be accurately detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline manufacturing technical field, especially pipeline forming vacuum detection alarm device. BACKGROUND

[0002] In the production link of pipeline manufacturing, different alarmers are arranged in different production stages, but the current alarmers only play the role of alarming and reminding, such as sound alarm, terminal alarm and the like. In the automatic packaging link of pipeline, the detection of pipeline mainly detects the vacuum pressure of pipeline, if the vacuum pressure of pipeline remains stable and does not obviously decrease, it is considered that the pipeline is well sealed and has no leakage, and is a good product. If the vacuum pressure significantly decreases, it indicates that the pipeline has leakage or other defects, and is determined as unqualified product.

[0003] In the prior art, in order to facilitate detection, every batch of products is sampled and inspected after the automatic packaging link, i.e. when the formed pipeline is formed, so that the detection efficiency is saved. When the pipelines in the same batch are sampled and inspected, if the pipeline is found to be unqualified, each pipeline in the batch needs to be detected to ensure that good pipeline is obtained and production cost is reduced, and the unqualified product pipeline is repaired or scrapped. When it is found that the unqualified product exists in the pipelines in the same batch, the alarm is only given, and the production continues, because the previous batch of pipelines has unqualified products, but it does not mean that the next batch of pipelines has unqualified products, therefore, in order to ensure the production efficiency, after the alarm of unqualified product is given, the production line continues to produce, i.e. the automatic packaging machine continues to produce, and the previous batch of products with alarm is handled by manual, so that the time of workers is wasted. UTILITY MODEL CONTENT

[0004] The basic scheme is intended to provide a pipeline forming vacuum detection alarm device for accurately detecting unqualified products.

[0005] The base scheme comprises an electric contact vacuum pressure gauge, a control circuit and an automatic packaging machine; the electric contact vacuum pressure gauge is electrically connected with the control circuit, and the control circuit is electrically connected with the automatic packaging machine; the control circuit comprises a first normally closed contact, a second normally closed contact, a third normally closed contact, a fourth normally closed contact, a fifth normally closed contact, a time-delay open normally closed contact, a movable contact, a first normally closed button, a second normally closed button, a normally open button, a first intermediate relay, a time relay, a vacuum abnormality alarm, a solenoid valve and a second intermediate relay; specifically, one end of the first normally closed contact is electrically connected with the electric contact vacuum pressure gauge, and the other end of the first normally closed contact is electrically connected with one end of the second normally closed contact, one end of the third normally closed contact, one end of the fourth normally closed contact, one end of the fifth normally closed contact, one end of the time-delay open normally closed contact and one end of the movable contact respectively; the other end of the second normally closed contact and the other end of the third normally closed contact are electrically connected with one end of the first normally closed button respectively, and the other end of the first normally closed button is electrically connected with one end of the first intermediate relay and one end of the time relay respectively; the other end of the fourth normally closed contact is electrically connected with one end of the vacuum abnormality alarm. The other end of the time-delay open normally closed contact and the other end of the fifth normally closed contact are electrically connected with one end of the solenoid valve respectively; the other end of the movable contact is electrically connected with one end of the normally open button, the other end of the normally open button is electrically connected with one end of the second normally closed button, and the other end of the second normally closed button is electrically connected with one end of the second intermediate relay; the solenoid valve is electrically connected with the automatic packaging machine.

[0006] Advantages: Different from the prior art, first, when each unformed pipe is running from the automatic packaging machine to the next production stage, the electric contact vacuum pressure gauge is used to measure the vacuum pressure value of the unformed pipe, when the vacuum pressure value of the unformed pipe is less than the standard value, the electric contact vacuum pressure gauge alarms and transmits the alarm signal to the control circuit, and the control circuit stops the running of the automatic packaging machine, so as to realize accurate detection of the unformed pipe and to detect each unformed pipe when it is produced into a formed product. Moreover, the unqualified pipe detected can also be repaired, and the unformed pipe is repaired before being packaged by the automatic packaging machine, which has lower repair cost and fewer repair procedures compared with the repair of the formed pipe, and further reduces the waste in production.

[0007] Secondly, when the alarm signal is transmitted to the control circuit, the vacuum abnormality alarm sounds, because the automatic packaging machine will produce noise during operation, which makes it difficult for the operator to hear the sound of the vacuum abnormality alarm. The operator may still be performing manual operations on the automatic packaging machine. If the automatic packaging machine stops running directly when the vacuum abnormality alarm sounds, the safety of the operator performing manual operations on the automatic packaging machine may be threatened. Therefore, when the vacuum abnormality alarm sounds, the automatic packaging machine stops running, which can easily cause production accidents. Therefore, the control circuit is provided with a first intermediate relay and a time relay. When the vacuum abnormality alarm sounds, the time relay delays the time for stopping the operation of the automatic packaging machine, so that the vacuum abnormality alarm continues to alarm. After the operator can hear the alarm of the vacuum abnormality alarm, the operator leaves the automatic packaging machine. At this time, the first intermediate relay is turned on, and the automatic packaging machine stops running. In this way, the safety of the operator is protected, and safety accidents can be avoided because the operator cannot hear the alarm in a noisy environment.

[0008] In addition, by setting the normally open button and the second intermediate relay, when the normally open button is in the open state, the automatic packaging machine normally runs. When the worker closes the normally open button, the second intermediate relay operates, and the automatic packaging machine stops running. This is equivalent to manual operation of the automatic packaging machine, while the first intermediate relay and the time relay described above are automatic stop of the automatic packaging machine. The control circuit can be equivalent to dividing the start / stop operation of the automatic packaging machine into manual operation and automatic operation, and integrating the start / stop setting of the automatic packaging machine. In addition, the start / stop button of the automatic packaging machine is set in the control circuit, so that the power supply provided on the automatic packaging machine does not need to be started / stopped, which facilitates the operator's operation of the automatic packaging machine and also facilitates the maintenance of the control circuit.

[0009] At the same time, the vacuum detection of the basic scheme is set before the pipe is formed. When the alarm signal is generated, the automatic packaging machine stops working. The pipe that has not been formed on the automatic packaging machine is unqualified product. In this way, it can be accurately judged whether the unformed target pipe is a good product before forming. Compared with the prior art which generally detects after the pipe is formed, the basic scheme makes the final vacuum detection before the pipe is formed. At the same time of accurately detecting whether the unformed target pipe is a good product, when it is not a good product, it can also be maintained subsequently to reduce production cost and prevent waste in production. Compared with sampling detection of a batch of products, when unqualified products are detected, complete detection of the batch of products is required, which is too slow. The present application directly detects each pipe before forming, which can improve the detection efficiency.

[0010] Finally, the start / stop control of the automatic packaging machine is integrated in a control circuit, and has manual and automatic operation, can accurately detect the unformed pipe, and can also protect the safety of the worker and prevent safety accidents.

[0011] Preferably, the automatic packaging machine comprises a pipe rack unloading cylinder, the pipe rack unloading cylinder is electrically connected with the control circuit, and the alarm signal is used to suspend the operation of the pipe rack unloading cylinder.

[0012] Beneficial effect: When the pipe rack unloading cylinder stops, the unformed pipe cannot enter the next process, so that the unformed pipe is identified as unqualified product.

[0013] Preferably, the standard value box is provided on the electric contact vacuum pressure gauge, and the standard value set in the standard value box is-0.04 to-0.05 MPa.

[0014] Beneficial effect: By setting the standard value, when the actual vacuum pressure is lower than the standard value, it is determined that the product is unqualified, and the standard value is suitable for the pipes on the market at present.

[0015] Preferably, the electric contact vacuum pressure gauge is fixedly installed on the automatic packaging machine.

[0016] Beneficial effect: The electric contact vacuum pressure gauge is fixedly installed on the shell of the automatic packaging machine, which can facilitate the setting of the standard box of the electric contact vacuum pressure gauge by the worker.

[0017] Preferably, the time relay extension time is not less than 10s.

[0018] Beneficial effect: The worker is prevented from being disturbed by the loud noise emitted by the automatic packaging machine when operating the automatic packaging machine, and the alarm time of the vacuum abnormality alarm heard by the worker is delayed, that is, the time relay extension time is not less than 10s, which can effectively protect the work safety of the worker and avoid safety accidents.

[0019] Preferably, the alarm intensity of the vacuum abnormality alarm is 60 to 90 dB.

[0020] Beneficial effect: The alarm intensity of the vacuum abnormality alarm is 60 to 90 dB, which not only enables the worker to hear the alarm sound in a noisy environment, but also avoids damaging the hearing of the worker due to the alarm sound being too loud.

[0021] Preferably, the electric box is fixedly installed on the automatic packaging machine, the control circuit is fixedly installed in the electric box, and the electric box is close to the pipe rack unloading cylinder; the electric box comprises a door handle and a door, the door handle is installed on the door, the door handle is used to open / close the electric box, and the always-on button is close to the door handle.

[0022] Beneficial effect: The electric box is close to the discharge cylinder of the pipe rack, which is beneficial for the worker to observe the operating status of the discharge cylinder of the pipe rack while controlling the control circuit.

[0023] Preferably, the height difference between the electrical box and the ground is 1.4m.

[0024] Beneficial effect: Generally, this height is suitable for the working height of an average adult, making it convenient for workers to operate the electrical box.

[0025] Preferably, the normally open button is red and has a surface area of ​​not less than 5 cm 3 .

[0026] Beneficial effect: The normally open button is red, which can help workers distinguish the normally open button, and the surface area of ​​the normally open button is not less than 5cm 3 , making it convenient for workers to touch the normally open button directly without accidentally touching other electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the circuit structure of the control circuit of Example 1;

[0028] Figure 2 This is a schematic structural diagram of an electric contact vacuum pressure gauge and an automatic packaging machine according to the first embodiment;

[0029] Figure 3 This is a flow chart of Example 1. DETAILED DESCRIPTION

[0030] The reference numerals in the drawings of the specification include:

[0031] Automatic packaging machine 1, electric contact vacuum pressure gauge 2, standard value box 21, first normally closed contact KT1, second normally closed contact KT2, third normally closed contact KT3, fourth normally closed contact KT4, fifth normally closed contact KT5, delayed-open normally closed contact KT6, normally open contact KT7, first normally closed button SB1, second normally closed button SB2, normally open button SB3, first intermediate relay KA1, time relay KT, vacuum abnormality alarm HA, solenoid valve KY, second intermediate relay KA2.

[0032] Example 1

[0033] This embodiment is basically as Figure 1 and Figure 2 As shown, the pipe forming vacuum detection and alarm device includes an electric contact vacuum pressure gauge, a control circuit, and an automatic packaging machine. The automatic packaging machine includes a pipe rack discharge cylinder, which is electrically connected to the control circuit. The alarm signal is used to suspend the operation of the pipe rack discharge cylinder.

[0034] like Figure 1As shown, the control circuit includes a first normally closed contact KT1, a second normally closed contact KT2, a third normally closed contact KT3, a fourth normally closed contact KT4, a fifth normally closed contact KT5, a delayed-open normally closed contact KT6, a normally open contact KT7, a first normally closed button SB1, a second normally closed button SB2, a normally open button SB3, a first intermediate relay KA1, a time relay KT, a vacuum abnormality alarm HA, a solenoid valve KY and a second intermediate relay KA2.

[0035] Specifically, one end of the first normally closed contact KT1 is electrically connected to the electric contact vacuum pressure gauge, and the other end of the first normally closed contact KT1 is electrically connected to one end of the second normally closed contact KT2, one end of the third normally closed contact KT3, one end of the fourth normally closed contact KT4, one end of the fifth normally closed contact KT5, one end of the delayed-open normally closed contact KT6, and one end of the normally open contact KT7.

[0036] The other end of the second normally closed contact KT2 and the other end of the third normally closed contact KT3 are electrically connected to one end of the first normally closed button SB1 respectively, and the other end of the first normally closed button SB1 is electrically connected to one end of the first intermediate relay KA1 and one end of the time relay KT respectively.

[0037] The other end of the fourth normally-made contact KT4 is electrically connected to one end of the vacuum anomaly alarm HA. The other end of the delayed-open normally-made contact KT6 ​​and the other end of the fifth normally-made contact KT5 are each electrically connected to one end of the solenoid valve KY. The other end of the normally-break contact KT7 is electrically connected to one end of the normally-open button SB3, which is electrically connected to one end of the second normally-closed button SB2, which is electrically connected to one end of the second intermediate relay KA2.

[0038] The other end of the first intermediate relay KA1 , the other end of the time relay KT, the other end of the vacuum abnormality alarm HA, the other end of the solenoid valve KY, and the other end of the second intermediate relay KA2 are grounded respectively.

[0039] like Figure 2As shown, the electric contact vacuum pressure gauge is provided with a standard value box, and the standard value set in the standard value box is -0.04 to -0.05 MPa. When the actual vacuum pressure value is lower than the standard value, the sealing of the unformed pipe is poor and it is a defective product. At this time, the electric contact vacuum pressure gauge generates an alarm signal; the electric contact vacuum pressure gauge sends the alarm signal to the control circuit. After receiving the alarm signal, the control circuit suspends the operation of the automatic packaging machine. The solenoid valve is electrically connected to the discharge cylinder of the pipe rack, and the solenoid valve is used to control the start / stop of the discharge cylinder of the pipe rack. The electric contact vacuum pressure gauge is fixedly mounted on the casing of the automatic packaging machine. The time relay extension time is not less than 10 seconds, and preferably, the time relay extension time is 10 seconds. The alarm intensity of the vacuum abnormality alarm is 60 to 90 dB, and preferably, the alarm intensity of the vacuum abnormality alarm is 90 dB.

[0040] How to use this embodiment

[0041] like Figure 3 As shown, when the actual vacuum pressure measured on the electric contact vacuum pressure gauge exceeds / falls below the standard value set in the standard value box, an alarm signal is generated. This signal flows into the control circuit, closing the first normally closed contact KT1 and activating the control circuit. At this point, the vacuum anomaly alarm sounds, and after a 10-second delay from the time relay, the first intermediate relay activates, sending a closing signal to the solenoid valve. Upon receiving this signal, the solenoid valve stops the automatic packaging machine, effectively halting the operation of the pipe rack discharge cylinder. At this point, the unformed pipe has not yet completed the packaging process and is stuck in the automatic packaging machine, preventing it from proceeding to the next step. This unformed pipe is considered a defective product. This allows for accurate and rapid inspection of each unformed pipe, improving inspection efficiency. When a worker manually controls the automatic packaging machine, closing the normally open button activates the second intermediate relay, which in turn sends a pause signal to the solenoid valve, closing it and shutting down the automatic packaging machine. Opening the normally open button deactivates the second intermediate relay, opening the solenoid valve, and allowing the automatic packaging machine to operate normally.

[0042] Example 2

[0043] Different from the first embodiment, the pipe forming vacuum detection alarm device in this embodiment also includes an electrical box, which is fixedly installed on the automatic packaging machine, and a control circuit is fixedly installed in the electrical box. The electrical box is close to the pipe rack discharge cylinder, but the electrical box will not interfere with the operation of devices in the automatic packaging machine such as the pipe rack discharge cylinder. The height difference between the electrical box and the ground is 1.4m, which is to facilitate workers to start and stop the automatic packaging machine. The electrical box includes a door handle, a door and a box body. The outer surface of the box body is movably connected to the door. The door handle is set on the door, and the door handle is used to open / close the door. The control circuit is generally installed on the inside of the electrical box, opposite to the door. The normally open button in the control circuit is colored and has a surface area of ​​not less than 5cm 3The automatic packaging machine is started and stopped by the operator through the normally open button.

[0044] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship when the utility model product is usually placed, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0045] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] It should be understood that the term "and / or" used herein is only to describe the same field of associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a kind of "or" relationship.

[0047] Although the present subject matter has been described using language specific to structural features and / or method logical actions, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely example forms of implementing the claims.

[0048] The above-mentioned is only the embodiment of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described in detail, the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary skilled person in the art can improve and implement the present scheme under the enlightenment given in the present application, and some typical known structures or known methods should not become an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that for the skilled person in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. Pipeline forming vacuum detection alarm device, characterized in that: Including electric contact vacuum pressure gauge, control circuit and automatic packaging machine; The electric contact vacuum pressure gauge is electrically connected to the control circuit, and the control circuit is electrically connected to the automatic packaging machine; The control circuit includes a first normally closed contact, a second normally closed contact, a third normally closed contact, a fourth normally closed contact, a fifth normally closed contact, a delayed-open normally closed contact, a normally open contact, a first normally closed button, a second normally closed button, a normally open button, a first intermediate relay, a time relay, a vacuum anomaly alarm, a solenoid valve, and a second intermediate relay; Specifically, one end of the first normally closed contact is electrically connected to the electric contact vacuum pressure gauge, and the other end of the first normally closed contact is electrically connected to one end of the second normally closed contact, one end of the third normally closed contact, one end of the fourth normally closed contact, one end of the fifth normally closed contact, one end of the delayed-open normally closed contact, and one end of the normally open contact; The other end of the second normally closed contact and the other end of the third normally closed contact are respectively electrically connected to one end of the first normally closed button, and the other end of the first normally closed button is respectively electrically connected to one end of the first intermediate relay and one end of the time relay; The other end of the fourth normally-made contact is electrically connected to one end of the vacuum abnormality alarm; the other end of the delayed-off normally-made contact and the other end of the fifth normally-made contact are electrically connected to one end of the solenoid valve respectively; the other end of the normally-break contact is electrically connected to one end of the normally-open button, the other end of the normally-open button is electrically connected to one end of the second normally-closed button, and the other end of the second normally-closed button is electrically connected to one end of the second intermediate relay; the solenoid valve is electrically connected to the automatic packaging machine.

2. The pipeline forming vacuum detection alarm device according to claim 1, characterized in that: The automatic packaging machine comprises a tube-slide rack discharging cylinder, which is electrically connected to a control circuit. The control circuit is used to suspend the operation of the tube-slide rack discharging cylinder.

3. The pipeline forming vacuum detection alarm device according to claim 1, characterized in that: A standard value box is provided on the electric contact vacuum pressure gauge, and the standard value set in the standard value box is -0.04 to -0.05 MPa.

4. The pipeline forming vacuum detection alarm device according to claim 3, characterized in that: The solenoid valve is electrically connected to the discharge cylinder of the pipe rack, and the solenoid valve is used to control the start / stop of the discharge cylinder of the pipe rack.

5. The pipeline forming vacuum detection alarm device according to claim 1, characterized in that: The electric contact vacuum pressure gauge is fixedly installed on the automatic packaging machine.

6. The pipeline forming vacuum detection alarm device according to claim 1, characterized in that: The time relay extension time is not less than 10s.

7. The pipeline forming vacuum detection alarm device according to claim 1, characterized in that: The alarm intensity of the vacuum abnormality alarm is 60~90dB.

8. The pipeline forming vacuum detection alarm device according to claim 2, characterized in that: It includes an electric box, which is fixedly installed on the automatic packaging machine. The control circuit is fixedly installed in the electric box. The electric box is close to the discharge cylinder of the slide rack. The electrical box includes a door handle and a door. The door handle is installed on the door and is used to open / close the electrical box; the normally open button is close to the door handle.

9. The pipeline forming vacuum detection and alarm device according to claim 7, characterized in that: The height difference between the electrical box and the ground is 1.4m.

10. The pipeline forming vacuum detection alarm device according to claim 7, characterized in that: The normally open button is red and has a surface area of ​​not less than 5cm 3 .

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