CN216979123U

CN216979123U - Magnetism inspection device

Info

Publication number: CN216979123U
Application number: CN202123421037.6U
Authority: CN
Inventors: 季江坪; 朱谨
Original assignee: Continental Automotive Corp Lianyungang Co Ltd
Current assignee: Continental Automotive Corp Lianyungang Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-15
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a magnetic inspection apparatus. The magnetic inspection apparatus includes: the device comprises a sliding rail, a sliding block, a reciprocating driving mechanism, a magnetic detection circuit, a controller and an alarm. The sliding block is arranged on the sliding rail and can reciprocate along the sliding rail. The reciprocating driving mechanism is in driving connection with the sliding block and provides reciprocating driving force for the sliding block. The magnetic detection circuit is arranged on the sliding block and can reciprocate along with the sliding block. The magnetic detection circuit is also electrically connected with the controller so as to transmit an electric signal. The alarm is electrically connected with the controller so as to be controlled by the controller to give an alarm. The magnetic detection device provided by the utility model overcomes the defects of the prior art, and has the advantages of simple structure, stable performance, strong reliability, difficult damage, simple control, low price and lower maintenance cost.

Description

Magnetism inspection device

Technical Field

The utility model belongs to the technical field of detection, and particularly relates to a magnetic detection device for detecting the existence of magnetism of a speed sensor.

Background

The vehicle speed sensor needs to sense the change of a magnetic field to acquire signals, and chip elements in some vehicle speed sensors are provided with magnets or are additionally provided with a magnet when a finished product is assembled. Some of the magnets are used for acquiring signals and others are used for compensating and rectifying the waveform of the signals. In the case of a chip component with a magnet, the magnet may fall off due to high temperature or the like during injection molding of a product. For the product with the additional magnet, the missing magnet or the additional magnet missing magnetizing process is carried out during the assembly of the finished product. Due to the lack of magnetism, the signal acquisition of the speed sensor is inaccurate or wrong, thereby causing alarming faults when the vehicle is used. In order to overcome the above problem, it is necessary to detect the presence or absence of magnetism of the speed sensor. At present, the electronic mode of magnetic detection is mainly a gaussmeter, but the instrument is high in price, a detection probe of the instrument needs to be in contact with a product, the probe is easily damaged, the price of replacing the probe is high, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a magnetic inspection device for overcoming the defects in the prior art, which realizes magnetic inspection of products, and has the advantages of stable performance, difficult damage, low price and low maintenance cost.

To achieve the above object, the present invention provides a magnetic inspection apparatus including: the device comprises a sliding rail, a sliding block, a reciprocating driving mechanism, a magnetic detection circuit, a controller and an alarm;

the sliding block is arranged on the sliding rail and can reciprocate along the sliding rail;

the reciprocating driving mechanism is in driving connection with the sliding block and provides reciprocating driving force for the sliding block;

the magnetic detection circuit is arranged on the sliding block and can reciprocate along with the sliding block;

the magnetic detection circuit is also electrically connected with the controller so as to transmit an electric signal;

the alarm is electrically connected with the controller so as to be controlled by the controller to give an alarm.

Preferably, the reciprocating driving mechanism is also electrically connected with and controlled by the controller.

Preferably, the reciprocating driving mechanism is an air cylinder driving mechanism, and an air cylinder push rod of the air cylinder driving mechanism is connected with the sliding block.

Preferably, the cylinder driving mechanism is further connected with the controller and an external air source and is controlled by the controller.

Preferably, the slide rail is a pair of groove-shaped rails which are arranged in parallel and provided with sliding grooves on opposite surfaces; and two ends of the sliding block are respectively embedded into corresponding sliding grooves on the sliding rail and can slide along the sliding grooves.

Preferably, the magnetic detection circuit includes a detection chip and an amplification circuit electrically connected to the detection chip.

Preferably, the detection chip and the amplification circuit of the magnetic detection circuit are provided flatly on the surface of the slider.

Preferably, the controller is a PLC controller.

Preferably, the alarm is an audible and/or light alarm.

Preferably, the magnetic inspection device further comprises a product fixing frame to be inspected, and the magnet part of the product to be inspected is positioned close to the preset position on the surface of the sliding block by the product fixing frame to be inspected.

Compared with the prior art, the magnetic inspection device provided by the utility model adopts the magnetic detection circuit and the reciprocating transmission mechanism which can reciprocate relative to a product to be inspected, and has the advantages of simple structure, stable performance, strong reliability, difficulty in damage, simplicity in control, low price and lower maintenance cost.

Drawings

FIG. 1 is a schematic view of a magnetic inspection apparatus according to a preferred embodiment of the present invention.

Detailed Description

The utility model will be further explained with reference to the drawings and the preferred embodiments.

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention to those skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the utility model is not limited to specific described embodiments. Rather, it is contemplated that the utility model may be practiced with any combination of the following features and elements, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly recited in a claim. In addition, in this document, terms indicating directions such as up, down, left, right, upper, lower, and the like are used for convenience of description only and are expressed according to relative positions of components in the current drawings, and should not be construed as limiting the scope of protection.

In one embodiment of the present invention, as shown in fig. 1, a magnetic inspection apparatus is provided for detecting whether there is a defect in a product, such as a speed sensor, in which a magnet is missing or not magnetized. The magnetic detection device comprises a base 1, a slide rail 2, a slide block 3, a reciprocating drive mechanism 4, a magnetic detection circuit 5, a controller 6, an alarm 7 and a power supply 8.

The base 1 is provided with a slide rail 2. The slide rail 2 is a pair of parallel groove-shaped rails with slide grooves 21 on opposite surfaces.

The sliding block 3 is arranged on the sliding rail 2, and two ends of the sliding block 3 are respectively embedded into the corresponding sliding grooves 21 on the sliding rail 2 and can slide back and forth along the sliding grooves 21 on the sliding rail 2.

The base 1 is also provided with a reciprocating driving mechanism 4, and the reciprocating driving mechanism 4 is in driving connection with the slide block 3 and provides reciprocating driving force for the slide block 3. Further, the reciprocating drive mechanism 4 is preferably a cylinder drive mechanism. The cylinder push rod 41 of the cylinder driving mechanism is mechanically connected with the slide block 3. The cylinder driving mechanism is also connected with an external air source (not shown) and the controller 6, and is controlled by the controller 6 so as to control the cylinder push rod 41 to push the sliding block 3 to reciprocate. The reciprocating driving mechanism 4 of the embodiment preferably adopts a cylinder driving mechanism, and the cylinder driving mechanism is cheaper in price and relatively simple to control, and a high-pressure air source (not shown) in a production workshop is directly adopted, so that the cost of the whole device is further reduced. Of course, in other embodiments, other types of drive mechanisms may be used for the reciprocating drive mechanism 4.

The magnetism detection circuit 5 is provided on the slider 3, preferably, on the surface of the slider 3, and is reciprocated together with the slider 3. The magnetic detection circuit 5 comprises a detection chip 51 and an amplification circuit 52 electrically connected to the detection chip 51, as shown in fig. 1, preferably, the detection chip 51 and the amplification circuit 52 are flatly disposed on the upper surface of the slider 3 so as to be as close as possible to the product 9 to be detected and sensitively sense the magnetic field variation thereof. The amplification circuit 52 of the magnetism detection circuit 5 is also electrically connected to the controller 6 so as to transmit an electric signal. The magnetic detection circuit 5 is used for sensing the change of the magnetic field of the product 9 to be detected so as to judge whether a magnet exists in the product 9 to be detected. When the product 9 to be detected is a qualified product, namely the product 9 to be detected is provided with a magnet, when the magnetic detection circuit 5 slides along with the sliding block 3 and passes through the product 9 to be detected, the magnetic field intensity can change, and then a changed induced electrical signal is generated in the magnetic detection circuit 5. When the product 9 to be detected is an unqualified product, namely the product 9 to be detected does not have a magnet generating a magnetic field, the magnetic field change cannot be generated when the magnetic detection circuit 5 slides along with the sliding block 3 to pass through the product 9 to be detected, and then the changed induced electrical signal cannot be generated in the magnetic detection circuit 5. The controller 6 judges whether the product 9 to be inspected is qualified or not according to whether the change of the induced electrical signal is generated in the magnetic detection circuit 5 or not.

The controller 6 is electrically connected with the alarm 7. The controller 6 can receive the change of the induced electric signal transmitted by the magnetic detection circuit 5, and analyze and process the change. When the controller 6 judges that the product 9 to be detected is unqualified, the controller 6 controls the alarm 7 to give an alarm to help the staff to find and process the unqualified product in time. The Controller 6 is preferably a Programmable Logic Controller (PLC), which is cheap and simple to control, and further reduces the cost of the whole device. The alarm 7 is preferably a sound and/or light alarm, and the alarm effect is more intuitive and efficient.

The power supply 8 supplies operating power to the controller 6 and/or the entire magnetic inspection apparatus.

This magnetism inspection device still includes the product mount 10 of examining, and this product mount 10 of examining is set up on base 1, and should examine the magnet position 91 that the product mount 10 of examining will examine the product 9 and locate to be close to on the preset position of slider 3 upper surface. Preferably, the product fixing frame 10 for inspecting positions the magnet portion 91 of the product 9 to be inspected to a position having a predetermined breath from the detecting chip 51 on the slider 3, so that the detecting chip 51 of the magnetic detecting circuit 5 can sense the magnetic field generated by the magnet portion 91 more accurately and sensitively.

Although the present invention has been described in connection with the preferred embodiments, it is not limited thereto. Various changes and modifications within the spirit and scope of the utility model may be made by those skilled in the art without departing from the spirit and scope of the utility model, and therefore the scope of the utility model should be determined by the appended claims.

Claims

1. A magnetic inspection apparatus, comprising: the device comprises a sliding rail, a sliding block, a reciprocating driving mechanism, a magnetic detection circuit, a controller and an alarm;

2. A magnetic inspection apparatus in accordance with claim 1, wherein said reciprocating drive mechanism is further electrically connected to and controlled by said controller.

3. A magnetism inspection apparatus as claimed in claim 1 or 2, wherein said reciprocating drive mechanism is a cylinder drive mechanism, and a cylinder push rod of said cylinder drive mechanism is connected to said slider.

4. A magnetic inspection apparatus in accordance with claim 3, wherein said cylinder driving mechanism is further connected to and controlled by said controller and an external air source.

5. A magnetic inspection apparatus in accordance with claim 1 or 2, wherein said slide rail is a pair of parallel grooved rails having sliding grooves formed on opposite surfaces thereof; and two ends of the sliding block are respectively embedded into corresponding sliding grooves on the sliding rail and can slide along the sliding grooves.

6. A magnetic inspection apparatus in accordance with claim 1 or 2, wherein said magnetic detection circuit comprises a detection chip and an amplification circuit electrically connected to the detection chip.

7. A magnetic inspection apparatus in accordance with claim 6, wherein said detection chip and said amplification circuit of said magnetic detection circuit are provided flat on the surface of said slider.

8. A magnetism checking device according to claim 1 or 2, wherein said controller is a PLC controller.

9. A magnetic testing device according to claim 1 or 2, wherein said alarm is an audible and/or light alarm.

10. A magnetic inspection apparatus in accordance with claim 1 or 2, further comprising a product mount to be inspected, said product mount to be inspected positioning a magnet portion of a product to be inspected at a predetermined position near the surface of said slider.