KR102343619B1 - The apparatus for identifying metallic foreign components - Google Patents

Abstract

The present invention relates to a metal foreign material detection device. More particularly, it relates to a metal foreign material detection device that improves detection intensity by fundamentally blocking vibration transmitted to a detection unit.
A metal foreign material detection apparatus according to an embodiment of the present invention is formed of a first frame supporting a transport unit for moving a detection target and a second frame supporting a detection unit detecting whether or not a metal foreign material is present in the detection target object, The first frame is formed of a plurality of first vertical frames and a plurality of first horizontal frames, and the second frame is formed of a plurality of second vertical frames and a plurality of second horizontal frames, and A support block is fixed to an upper surface of a predetermined position, and the second horizontal frame is coupled to the support block so as to be fixed or spaced apart, and a caster is mounted at the lower end of the frame, and the first and second vertical frames each The first and second height-adjustable height-adjustable feet may be coupled to the lower end, characterized in that they may be formed.

Description

Metal foreign material detection device {THE APPARATUS FOR IDENTIFYING METALLIC FOREIGN COMPONENTS}

The present invention relates to a metal foreign material detection device. More particularly, it relates to a metal foreign material detection device that improves the detection intensity by fundamentally blocking the vibration transmitted to the detection unit.

The metal foreign body detector is a device that detects metal foreign substances mixed in inspection products such as food. There is an electromagnetic induction method that detects with a magnetic sensor that operates as an electromagnetic induction phenomenon.

Faraday's law of electromagnetic induction is generalized to the formula ε=-N(dΦ/dt) (unit: V), and the induced electromotive force (ε) is proportional to the number of turns of the coil and the rate of change of magnetic flux (Φ) with time. At this time, in order to easily detect a signal generated by the movement of the foreign metal, since the number of turns of the coil does not change, it is necessary to increase the movement speed of the foreign material passing through the magnetic field or increase the degree of magnetization of the foreign material.

A conventional metal foreign material detector is implemented as an integrated device with a conveyor system in charge of transporting a detection target and a detection unit.

Therefore, as the conveyor system operates, the vibration of the motor or the vibration caused by the rotation of the conveyor is transmitted as it is to the detection unit, thereby lowering the sensitivity of the detection unit for detecting foreign substances and reducing the accuracy of the detection sensitivity.

Korean Patent Registration 10-0794907 (Announcement Date: January 08, 2008)

SUMMARY The technical problem to be solved by the present invention is to provide an apparatus for detecting a metal foreign body having improved detection sensitivity by removing the influence of noise, such as vibration, applied to the metal foreign material detecting apparatus.

In addition, it is intended to improve detection sensitivity by completely mechanically separating the conveyor device and the metal foreign material detection unit so that vibration from the conveyor is not transmitted to the detection unit.

Another object of the present invention is to provide a metal foreign material detection device that physically separates the conveyor device and the detection unit, but enables simultaneous movement as a single device during movement.

The technical problems to be solved by the present invention are not limited to the above problems, and may be variously expanded without departing from the technical spirit and scope of the present invention.

A metal foreign material detection apparatus according to an embodiment of the present invention is formed of a first frame supporting a transport unit for moving a detection target and a second frame supporting a detection unit detecting whether or not a metal foreign material is present in the detection target object, The first frame is formed of a plurality of first vertical frames and a plurality of first horizontal frames, the second frame is formed of a plurality of second vertical frames and a plurality of second horizontal frames, and A support block is fixed to an upper surface of a predetermined position, and the second horizontal frame is coupled to the support block so as to be fixed or spaced apart, and a caster is mounted at the lower end of the frame, and the first and second vertical frames are respectively It can be made characterized in that the first and second height-adjustable feet are coupled to the lower end.

Here, the conveying unit is made of a conveyor belt, a slide bed is formed under the conveying unit, and the slide bed is spaced apart from a second slide bed located in the detection unit and both ends of the first slide bed by a predetermined interval. It may consist of first and third slides positioned in the same manner.

Here, the support block may have a concave shape, and the second horizontal frame may be coupled to the concave portion.

Here, when the second height adjustment support is supported in contact with the ground, the second horizontal frame is spaced upwardly from the support block, and when the second height adjustment support is spaced apart from the ground, the second horizontal frame The frame may be fixedly coupled to the support block.

Here, when the first and second height adjustment supports are spaced apart from the ground, the second horizontal frame is fixed to the support block, and the caster abuts against the ground so that the first and second frames move integrally. It may be possible.

By using the metal foreign material detection apparatus according to the embodiments of the present invention, it is possible to provide a metal foreign material detection apparatus having improved detection sensitivity by removing the influence of noise such as vibration applied to the metal foreign material detection apparatus. have.

In addition, it is possible to provide a metal foreign material detection device that completely mechanically separates the conveyor device and the metal foreign material detection unit so that vibration from the conveyor is not transmitted to the detection unit, and enables simultaneous movement as a single device during movement.

In addition, it is possible to improve the detection intensity of the metal foreign material detection device, and to prevent the inclusion of the metal foreign material in the object to be detected in order to secure the safety of the product.

The effects of the present invention are not limited to the above effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 and 2 are diagrams for explaining the operation of the metal foreign material detection apparatus according to an embodiment of the present invention.
3 is a perspective view of a metal foreign material detection apparatus according to an embodiment of the present invention.
4 is a front view of the metal foreign material detection device according to an embodiment of the present invention in a state of being fixed to the ground.
5 is a front view in a moving state of the metal foreign material detection apparatus according to an embodiment of the present invention.
FIG. 6 is an enlarged view of part A(B) of FIG. 3 for explaining a structure enabling the state of FIGS. 4 and 5 .
FIG. 7 is an enlarged view of part C of FIG. 4 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and repeated descriptions of the same components are omitted.

A metal foreign material detection device is a device that detects a metal foreign material abnormally mixed in a product to be inspected, and is used in inspection processes such as food manufacturing, chemistry, and textile fields. An optical method using X-rays or lasers, a method using electromagnetic induction, or a magnetic field detection method may be used.

The electromagnetic induction method is composed of a transmitter coil consisting of one coil and a receiver coil consisting of two or more coils. It operates on the principle of discriminating the presence or absence of metal foreign substances in the inspection object by discriminating the signal change of the receiver coil that occurs when passing through.

In addition, the magnetic field detection method includes one or more permanent magnets and two or more magnetic sensors, so that the magnitude of the signal of the magnetic sensor determined by the distance between the permanent magnet and the magnetic sensor and the magnetic force of the permanent magnet, It operates on the principle of determining the presence or absence of a metal foreign substance by detecting a change when the inspection target product passes by comparison.

At this time, when a nonmagnetic material that does not affect the magnetic field passes through, the signal of the magnetic sensor will not change. Therefore, it is used as a basis for determining the presence or absence of a metal foreign material.

Conveyor belts are mainly used to transport items to be inspected in the metal foreign body detection device. The vibration generated by the rotation of the motor, which is the power source for driving the conveyor belt, and the rollers for driving the conveyor belt, is generated by electromagnetic induction sensor and strong magnet. There is a problem that the change in the induced electromotive force occurs in the electromagnetic induction sensor even though the magnetic material does not pass through the electromagnetic induction sensor.

In other words, in the stationary state, there is no change in the magnetic field between the ferromagnet and the electromagnetic induction sensor, but there is no change in the magnetic field between the ferromagnet and the electromagnetic induction sensor. Even if there is a change in the induced electromotive force due to a change in the magnetic field reaching the electromagnetic induction sensor, even if it is weak, an error in determining such a change as the presence of a metal foreign material in the inspection object may occur.

In addition, the degree of malfunction due to vibration is not constant depending on the deviation between the finished product that may occur during the design and manufacturing process, such as the overall length of the conveyor belt, the power transmission method of the drive motor, and the deviation in the attachment strength between the strong magnet and the electromagnetic induction sensor. A problem exists.

According to the present invention, there is provided a metal foreign material detection apparatus capable of solving these problems, improving the detection intensity of the metal foreign material detection apparatus, and blocking the effect of noise such as vibration.

1 and 2 are diagrams for explaining the operation of the metal foreign material detection apparatus according to an embodiment of the present invention.

Referring to FIGS. 1 and 2 , the metal foreign material detection device includes a transport unit 100 , an entry unit sensor coil 120 , a magnetization unit 110 , and a detection unit sensor coil 125 , and controls their operations. A control unit (not shown) is included.

The conveying unit 100 has a function of conveying the detected object 10 in a predetermined direction, and may be a mechanical device such as a conveyor belt.

The detection target 10 placed on the conveying unit 100 is conveyed in the direction of the arrow.

The rotational speed of the motor (not shown) for driving the conveying unit 100 determines the conveying speed of the conveying unit 100 , and the moving speed of the detected object 10 is determined by the motor (not shown) for driving the conveying unit 100 . time) is determined by the rotational speed.

The control unit controls the rotational speed of the motor to adjust the moving speed of the detected object 10 placed on the conveying unit 100 .

Here, the to-be-detected object 10 may be food, clothing, or the like, but is not limited thereto.

The magnetization unit 110 is provided at a predetermined position on the transport path of the detected object 10 , the entry sensor coil 120 is provided at the front end of the magnetization unit 110 in the transport path, and the detection unit sensor coil 125 . may be provided at the rear end of the magnetization unit 110 in the transport path.

The entry part sensor coil 120 , the magnetization part 110 , and the detection part sensor coil 125 may be disposed at predetermined intervals along the transport direction of the transport part 100 .

The detection target 10 passes through the entry part sensor coil 120 , the magnetization part 110 , and the detection part sensor coil 125 along the transport path of the transport part 100 .

The magnetization unit 110 is provided at a predetermined position on the transport path of the detected object 10 , and the entry sensor coil 120 is provided at the front end of the magnetization unit 110 in the transport path, and the detection unit sensor coil 125 . is provided at the rear end of the magnetization unit 110 in the transport path.

The entry part sensor coil 120 , the magnetization part 110 , and the detection part sensor coil 125 are arranged at predetermined intervals along the transport direction of the transport part 100 .

The detection target 10 passes through the entry part sensor coil 120 , the magnetization part 110 , and the detection part sensor coil 125 along the transport path of the transport part 100 .

The magnetization unit 110 serves to magnetize a foreign metal that may be mixed in the object 10 to be detected.

The magnetization unit 110 may have a rectangular frame shape having a hollow region through which the carrier unit 100 passes and surround the carrier unit 100 .

The magnetization unit 110 includes an upper magnetization unit 110u provided at the upper portion and a lower magnetization unit 110d provided at the lower side, and the upper and lower magnetization units 110u and 110d are made of a ferromagnet, and a space between them is formed. It is possible to magnetize a metal foreign material in the passing detection target 10 . Of course, the magnetization unit 110 may have any configuration other than a ferromagnet as long as it can magnetize a metal material or the like.

When the metal foreign material mixed in the detection target 10 is magnetized while passing through the magnetization unit 110 , the detection sensitivity of the detection unit sensor coil 125 passing thereafter may be increased.

Specifically, Faraday's law of electromagnetic induction is generalized to the formula of ε=-N(dΦ/dt) (unit: V), and the induced electromotive force (ε) depends on the number of turns of the coil and the rate of change of magnetic flux (Φ) with time. At this time, when the metal foreign material mixed in the detection target 10 is magnetized, the magnitude of the generated induced electromotive force increases, so that the detection sensitivity in the detection unit sensor coil 125 can be improved.

In addition, the control unit may improve the detection sensitivity of the sensor coil 125 of the detection unit by increasing the moving speed of the conveying unit 100 to increase the rate of change of the magnetic flux density.

The entry sensor coil 120 may have a rectangular rim shape having a hollow region through which the transport unit 100 passes and surround the transport unit 100 .

The entry part sensor coil 120 may include an entry part upper sensor coil 120u and an entry part lower sensor coil 120d.

The upper sensor coil 120u of the entry part functions to generate a magnetic field, and the lower sensor coil 120d of the entry part functions to receive it.

A large magnetic flux is generated by the magnetic field generated by the upper sensor coil 120u of the entry part, and the lower sensor coil 120d of the entry part senses an induced electromotive force signal generated when the magnetic flux of a foreign metal in the object 10 is changed. , it is possible to detect whether a foreign metal is mixed in the to-be-detected object 10 .

The entry part upper sensor coil 120u and the entry part lower sensor coil 120d have a structure in which a copper wire is wound around an iron core, and one end of the entry part upper sensor coil 120u is of the entry part lower sensor coil 120d. It is connected to one end, and the other end of the lower sensor coil 120d of the entry unit that senses the induced electromotive force signal may be connected to an amplifier (not shown) to be described later.

The detection unit sensor coil 125 may have a rectangular frame shape having a hollow region through which the conveyance unit 100 passes and surround the conveyance unit 100 .

The detector sensor coil 125 may include an upper sensor coil 125u of the detector and a lower sensor coil 125d of the detector.

The upper sensor coil 125u of the detection unit functions to generate a magnetic field, and the lower sensor coil 125d in the detection unit functions to receive it.

A large magnetic flux is generated by the magnetic field generated by the upper sensor coil 125u of the detection unit, and the lower sensor coil 125d of the detection unit senses an induced electromotive force signal generated when the magnetic flux of a foreign metal in the object 10 is changed. It can be detected whether a metal foreign material is mixed in the detection object 10 . This is the same as the entry part sensor coil 120 described above.

However, since the induced electromotive force signal received from the lower sensor coil 125d of the detection unit is a signal generated by a foreign metal magnetized by the magnetizer 110, the induced electromotive force received from the lower sensor coil 120d of the entry unit is a signal generated by the magnetization unit 110. different from the signal. By such different signals, the metal foreign material detection apparatus according to the present invention can distinguish the metal foreign material and the packaging material in the object 10 to be detected.

In addition, since the entry part sensor coil 120 and the detection part sensor coil 125 are spaced apart by a predetermined distance (L), the detection object 10 passing through the entry part sensor coil 120 moves while vibration or shock is generated. When this occurs, a difference may occur in the induced electromotive force signal received from the detection unit sensor coil 125 . In this case, in order to secure the reliability of the detection of the metal foreign material, at least one of the detected signals may be filtered in comparison with a preset signal pattern.

The upper sensor coil 125u of the detection unit and the lower sensor coil 125d of the detection unit have a structure in which a copper wire is wound around an iron core, and one end of the upper sensor coil 125u of the detection unit is connected to one end of the lower sensor coil 125d of the detection unit. and the other end of the lower sensor coil 125d of the detector that senses the induced electromotive force signal from the magnetized foreign material may be connected to an amplifier (not shown) to be described later.

In the above description, the magnetization unit 110 and the entry/detection unit sensor coils 120 and 125 have been described as having a rectangular frame shape with a hollow area, but a different shape (eg, cylindrical) is free to have

That is, the upper and lower portions of the carrying unit 100 may be separate components spaced apart from each other.

That is, the upper magnetization part 110u and the lower magnetization part 110d, the entry part upper sensor coil 120u and the entry part lower sensor coil 120d, the detection part upper sensor coil 125u and the detection part lower sensor coil 125d are connected. It is implemented as a separate configuration, but may be connected to each other in an appropriate manner and disposed on the upper and lower portions of the carrying unit 100 .

Although the metal foreign material detection device of FIG. 1 has been described as a preferred embodiment with the configuration of the detection unit as the entry unit sensor coil 120, the magnetization unit 110, and the detection unit sensor coil 125, it is not limited thereto, and the magnetization unit ( 110) and the detection unit sensor coil 125 may be configured only.

3 is a perspective view of a metal foreign material detection apparatus according to an embodiment of the present invention, and FIG. 4 is a front view of the metal foreign material detection apparatus according to an embodiment of the present invention in a state of being fixed to the ground.

3 and 4, the metal foreign material detector 1 according to the present invention is conveyed by a detection unit 11 including a metal detection sensor, and a conveyor belt operating in an endless track by driving a motor 12. The first and second frames 20a formed to support the unit 13, the slide beds 14a, 14b, 14c installed under the conveyor belt, the detection unit 11, the conveying unit 13, the motor 12, etc.; 20b) and a control unit (not shown) equipped with control means for executing various controls including determination of mixing of metal foreign substances.

The detection unit 11 constitutes a tunnel at the center, and the conveying unit 13 continuously rotates through the tunnel, and as the inspected object passes through the tunnel by the conveying unit 13, it is detected whether or not metal is included in the tunnel by a sensor or the like. will detect

In addition, the metal foreign material detector 1 includes an optical sensor for detecting whether the object to be inspected has entered from one side by the transfer unit 13, an emergency stop switch for emergency stop, a power box, and adjustment for fixing the metal detector Chairs and the like may be further included.

In general, while the to-be-detected object 10 passes through the detection unit 11 , vibrations generated during operation of the motor 12 and vibrations generated during rotation of the roller 18 are transmitted to the detection unit 11 , and the detection unit If (11) and the external vibration do not vibrate in synchronization with each other, it can be interpreted that the surrounding structures vibrate with the detection unit 11 as the center.

Therefore, when the detection unit 11 senses and interprets the data of only the object 10 to be detected, it is most important to minimize the vibration noise around it in improving the sensitivity of the detection unit 11 .

In the present invention, in order to solve this problem, the slide beds 14a, 14b, 14c supporting the conveying unit 13 are separated, and the first and second frames 20a and 20b supporting the detection unit 11 are physically connected to each other. It is separated so as not to be connected to the configure to do

The first frame 20a is a main frame that supports the remaining components except for the detection unit 11, and includes four vertical frames 15a and a main horizontal frame 19a.

The second frame 20b means a frame supporting the detector 11 , and includes four vertical frames 15b and a horizontal frame 19b of the detector.

4 is a front view of the metal foreign material detection device according to an embodiment of the present invention in a state fixed to the ground, and FIG. 5 is a front view of the metal foreign material detection device according to the embodiment of the present invention in a moving state.

4 and 5, the metal foreign material detection device 1 of the present invention is configured to physically separate from each other in order to minimize the vibration interference between the detection unit 11 and the transport unit 13, while the metal Consider the mobility and fixability of the foreign material detection device (1).

That is, the metal foreign material detection device 1 is provided with a caster 17 to have mobility, and is fixed using height adjustment supports 16a and 16b to prevent shaking when used in the field.

The metal foreign body detection device 1 of the present invention is configured such that the height adjustment supports 16a and 16b are supported in contact with the ground when in use (as shown in FIG. 4), and when moved, the height adjustment supports 16a, 16b are raised by raising the It may be configured to be movable by the caster 17 (as shown in FIG. 5).

Here, the first height adjustment support 16a is the front end of each of the first vertical frame 15a that supports the motor 12 , the conveying unit 13 , the roller 18 , the control control box, etc. except for the detection unit 11 . It is mounted on, and the second height adjustment support (16b) is mounted on the front end of each of the second vertical frame (15b) supporting the detection unit (11).

In order to describe in more detail the state at the time of fixing and moving shown in Figs. 4 and 5, reference is made to Fig. 6 .

FIG. 6 is an enlarged view of part A(B) of FIG. 3 for explaining a structure enabling the states of FIGS. 4 and 5 .

6(A) shows the first and second vertical frames 15a and 15b, respectively, as shown in FIG. 4, supported on the ground by first and second height adjustment supports 16a and 16b, respectively, to detect a metal foreign body ( 1) indicates the fixed state, which is a usable state.

6 (B) is the first and second vertical frames (15a, 15b) are spaced apart from the ground by the first and second height adjustment support (16a, 16b), respectively, as shown in Figure 5, the caster 17 is the ground It indicates a moving state, which is a state in which the metal foreign material detection device 1 can move in contact with the .

As shown in (A) and (B) of Figure 6, since the metal foreign material detection device 1 must have both mobility and fixability, when fixed, the transfer unit 13 including the motor 12 and the detection unit 11 In order not to be affected by vibrations, it is necessary to be fixed and separated from each other, and when moving, the detection unit 11 and the transport unit 13 are not moved respectively, but can be moved at once in an integrated state. there is a need

Referring to (A) of Figure 6, when fixed, the first and second height adjustment support (16a, 16b) is rotated and descends downward, and is supported while in contact with the ground.

At this time, the second height adjustment support (16a, 16b) is the second horizontal frame (19b) supporting the detection unit 11 as the detection unit 11 rises upward while in contact with the ground from the support block (21). Spaced apart, the first and second frames 20a and 20b are completely physically separated, and the detection unit 11 and the transport unit 13 are completely separated and supported.

Referring to FIG. 6B, when moving, the first and second height adjustment supports 16a and 16b are rotated in opposite directions to rise upward and are spaced apart from the ground.

At this time, the second height adjustment support (16a, 16b) is spaced apart from the ground, the detection unit 11 descends in the downward direction, the detection unit 11 is supported by the support block (21).

Since the support block 21 is fixed to the upper surface of the first horizontal frame 19a of the first frame 20a, the second frame 20b is supported via the support block 21, and the first and second frames (20a, 20b) has a form that can be moved integrally.

The support block 21 has a concave shape, the bottom is fixed to the upper surface of the first horizontal frame 19a, and has a structure in which the second horizontal frame 19b is block-coupled to the groove portion and supported.

FIG. 7 is an enlarged view of part C of FIG. 4 .

As shown in FIG. 7 , the slide beds 14a , 14b , and 14c having a support structure are physically separated from each other under the conveyor belt, which is the conveying unit 13 , in order not to be affected by the vibration of the conveying unit 13 .

The slide beds 14a, 14b, and 14c are separated into three, and a second slide bed 14b positioned inside the detection unit 11 is formed, and both ends of the second slide bed 14b are spaced apart from each other at a predetermined interval. A first slide bed 14a and a third slide bed 14c are respectively formed.

As the first to third slide beds 14a, 14b, and 14c are physically separated from each other, vibration is not transmitted to the detection unit 11 when the motor 12 and the conveying unit 13 are conveyed (or by minimizing) it becomes possible to minimize the metal foreign material detection error in the detection unit 11 .

In this way, there is an effect that the metal foreign material detection signal of the electromagnetic induction sensor is not generated or significantly lowered compared to before the implementation of the present invention by the conveyor belt self-vibration, and the frame 20a of the main equipment and the detection unit 11 Since the frame 20b is physically separated, the effect of vibration can be minimized.

In addition, as the movable metal foreign material detection device 1, the detection unit 11 can be fixed to the frame 20a during movement, so that it is possible to implement a technology that can be transferred at a time by integration according to the movement. do.

As a result, there is no need to lower the gain of the amplifier circuit or perform attenuation processing by software, as in the prior art, and consequently, it is possible to obtain the effect of improving the detection sensitivity of metal foreign substances. do.

In the above, the present invention has been described in terms of specific embodiments, including embodiments of the present invention, but those of ordinary skill in the art to which the present invention pertains can predict various substitutions or modifications in the construction of the invention described above. will be able In addition, without departing from the scope and technical spirit of the present invention, structural and functional modulation may be variously made. Accordingly, the spirit and scope of the present invention will be broadly understood as set forth in the claims appended hereto.

1: metal foreign object detection device 10: object to be detected
11: detection unit 12: motor
13: transport parts 14a, 14b, 14c: slide bed
15a, 15b: vertical frame 16a, 16b: height adjustable feet
17 ; Caster 18: Roller
19a, 19b: horizontal frame 20a, 20b: frame
100: transport unit 110: magnetization unit
120: entry part sensor coil 125: detection part sensor coil

Claims (5)

It is formed of a first frame that supports a transport unit that moves the to-be-detected object and a second frame that supports a detection unit that detects whether the object to be detected is a foreign object,
The first frame is formed of a plurality of first vertical frames and a plurality of first horizontal frames, the second frame is formed of a plurality of second vertical frames and a plurality of second horizontal frames,
A support block is fixed to an upper surface of a predetermined position of the first horizontal frame, and the second horizontal frame is coupled to the support block to be fixed or spaced apart.
A caster is mounted on the lower end of the first horizontal frame,
The first and second height-adjustable supports are coupled to the lower ends of each of the first and second vertical frames, and the second horizontal frame is fixed to the first horizontal frame by the second height-adjustable support. separation is possible,
The conveying unit is made of a conveyor belt, and a slide bed is formed under the conveying unit,
The slide bed includes a second slide bed positioned within the detection unit, and first and third slides spaced apart from each other by a predetermined distance at both ends of the second slide bed. delete It is formed of a first frame that supports a transport unit that moves the to-be-detected object and a second frame that supports a detection unit that detects whether the object to be detected is a foreign object,
The first frame is formed of a plurality of first vertical frames and a plurality of first horizontal frames, the second frame is formed of a plurality of second vertical frames and a plurality of second horizontal frames,
A support block is fixed to an upper surface of a predetermined position of the first horizontal frame, and the second horizontal frame is coupled to the support block to be fixed or spaced apart.
A caster is mounted on the lower end of the first horizontal frame,
The first and second height-adjustable supports are coupled to the lower ends of the first and second vertical frames, respectively,
The support block is a shape inverted by 180 degrees of the yaw (凹) shape, the second horizontal frame is coupled to the concave portion,
When the second height adjustment support is supported in contact with the ground, the second horizontal frame is spaced upward from the support block,
When the second height adjustment support is spaced apart from the ground, the second horizontal frame is coupled to the support block and fixed, a metal foreign body detection device. delete 4. The method of claim 1 or 3,
When the first and second height adjustment feet are spaced apart from the ground, the second horizontal frame is fixed to the support block, and the caster abuts against the ground so that the first and second frames can move integrally, Metal foreign body detection device.

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