Earth ring control system

Abstract

This earth ring control system is introduced. To this end, the present invention comprises: an earth ring (10) for preventing static electricity, an electrostatic band line (20) connected to the earth ring (10), and a portable main body (100) which may be electrically coupled to the electrostatic band line (20); an inspection table (210) comprising a plurality of inspection sites in which an inspector may inspect a product to be inspected; a pair of rails (300) positioned on one side of the inspection table (210) and a sliding plate (400) capable of moving along the rails (300) while the portable main body (100) is seated thereon; and a separate control unit (500) that controls the movement of the sliding plate (400). Position sensors (410) capable of sensing the position of the sliding plate (400) are installed at respective points of the rails (300) installed in the plurality of inspection sites.

Description

Earth ring control system

[0001] The present invention is for an earth ring control system.

[0002] In the production or assembly process of electronic components or products, static electricity is a significant factor causing defects in those components or products.

[0003] In particular, static electricity accumulated in the human body can sometimes discharge into parts being produced or assembled with a potential difference of thousands of volts, potentially damaging the parts.

[0004] For example, as the integration density of electronic components has recently increased, transistors and diodes inside ICs are becoming more vulnerable to electrostatic discharge.

[0005] Therefore, it is well known that properly grounding the human body of a worker during production or assembly work is a fundamental solution.

[0006] A typical manufacturing environment usually includes many production or assembly lines, and for a specific production or assembly task, each line typically includes many workbenches.

[0007] To prevent electrostatic discharge from damaging parts, devices, or semi-finished products being produced or assembled, workers are typically required to wear an earth ring, which is electrically connected to a common ground.

[0008] Therefore, static electricity accumulated in the worker's body can be immediately discharged to the ground, etc., via the common ground of the workbench as long as the earth ring is worn.

[0009]

[0010] Meanwhile, the present invention aims to provide a system that prevents the inspection itself from being performed when the inspector is not wearing an earth ring, and a system in which the earth ring equipment is automatically transferred to an accurate inspection table as soon as a legitimate inspector enters the inspection area, even if the inspector does not manually move the earth ring equipment to the inspection area.

[0011] The purpose of the present invention is to provide a system that, in addition to the advantage of preventing static electricity by automatically moving the portable main body to the inspection table by the control unit before the inspector inspects, monitors in advance whether a pre-designated inspector is inspecting the product and whether the product is correct.

[0012] In addition, the present invention aims to provide a system in which a signal sensor detects whether an earth ring is worn on the wrist, and when the signal sensor detects that the metal in the earth ring is not in contact with the skin, the signal is transmitted to a power relay located inside the portable body, thereby short-circuiting the power supplying power to a separately connected monitor or oscilloscope so that the monitor or oscilloscope does not operate.

[0013] An earth ring control system is introduced.

[0014] To this end, the present invention comprises: an earth ring (10) that prevents static electricity, an electrostatic band line (20) connected to the earth ring (10), and a portable body (100) that can be electrically connected to the electrostatic band line (20); an inspection table (210) composed of a plurality of inspection stations where an inspector can inspect a product to be inspected; wherein the invention comprises a pair of rails (300) located on one side of the inspection table (210), a sliding plate (400) on which the portable body (100) can move while seated along the rails (300), and a separate control unit (500) that controls the movement of the sliding plate (400). The invention is characterized by including, wherein a position sensor (410) capable of sensing the position of the sliding plate (400) is installed at a point on each rail (300) installed in the plurality of inspection stations, and the control unit (500) has a pre-set inspection time schedule stored before the inspector inspects the product to be inspected, and the inspection station location to which the sliding plate (400) must be moved is also stored accordingly, and the inspection station entrance door (30) where the inspection table (210) is located has an inspection barcode (41) attached to the inspector access card (40) and an access door barcode (31) capable of being sensed are installed, and when the inspection barcode (41) and the access door barcode (31) are sensed by each other, the sliding plate (400) is moved to the pre-set inspection station location by the control unit (500), and the portable main body (100) includes a monitor (50) for monitoring the product to be inspected and The scope (60) is electrically connected, and the control unit (500) is characterized by sending an off signal to the power relay (110) inside the portable body (100) when the sliding plate (400) is not moved to a preset position, thereby causing the power supplied to the monitor (50) and the scope (60) to be short-circuited.

[0015] According to the present invention composed as described above, various effects such as the following are realized.

[0016] First, there is an advantage that if the inspector does not wear the earth ring, the product itself cannot be inspected.

[0017] Second, when the inspector enters the inspection room, the portable main unit is moved to the inspection location in advance to facilitate the inspection, and a system is provided that prevents the inspection itself if the portable main unit is not moved to the correct location.

[0018] Third, various effects are realized, such as a structure that allows the portable main body to rotate below the inspection area to prevent difficulties in conventional inspections caused by the electrostatic band line and to prevent static electricity in a simple manner.

[0019] FIG. 1 is a schematic diagram of an inspection station to which the present invention is applied.

[0020] FIG. 2 is a drawing showing a state in which a portable body, which is a component of the present invention, is seated on a sliding body.

[0021] FIG. 3 is a schematic diagram showing the operating state of the sliding plate, the control unit, and the rotating roll.

[0022] Figure 4 is an operating state diagram of a power relay,

[0023] FIG. 5 is a schematic diagram of a contact rubber pad formed on a sliding plate,

[0024] FIG. 6 is a drawing showing a pivot hinge,

[0025] FIG. 7 is a drawing showing the operating state of a monitor, which is a component of the present invention.

[0026] FIG. 8 is a photograph showing a scope, which is a component of the present invention.

[0027] FIG. 9 is a diagram showing the internal configuration of a portable body, which is a component of the present invention.

[0028] Figures 10 and 11 are photographs of an actual product to which the present invention is applied.

[0029]

[0030] A preferred embodiment of the earth ring control system of the present invention will be described below with reference to the attached drawings.

[0031]

[0032] FIG. 1 is a schematic diagram of an inspection station to which the present invention is applied, FIG. 2 is a diagram showing the state in which a portable body (100), which is a component of the present invention, is seated on a sliding body, FIG. 3 is a schematic diagram showing the operating state of a sliding plate (400), a control unit (500), and a rotating roll (440), FIG. 4 is a diagram showing the operating state of a power relay (110), FIG. 5 is a schematic diagram of a contact rubber pad (430) formed on a sliding plate (400), and FIG. 6 is a diagram showing a pivot hinge (310).

[0033]

[0034] As described above, an earth ring (10) that prevents static electricity, an electrostatic band line (20) connected to the earth ring (10), and a portable body (100) that can be electrically connected to the electrostatic band line (20) are disclosed.

[0035] The earth ring (10) and the electrostatic band line (20) are known technologies, so they are omitted here, and the portable body (100) will be described below.

[0036] It includes an inspection table (210) consisting of multiple inspection stations where an inspector can inspect the product to be inspected.

[0037] The product subject to inspection can be any product vulnerable to static electricity, including semiconductors, to which the present invention applies, and the inspection table (210) is arranged in multiple sections as shown in the illustration.

[0038] Of course, a single inspection station may be assumed, but an inspection station is assumed where multiple processes or multiple inspections are performed by simply moving the location within the same place.

[0039] As shown, the first inspection room (211), the second inspection room (212), and the third inspection room (213) are indicated, but they are not necessarily limited to three inspection rooms.

[0040]

[0041] A pair of rails (300) located on one side of an inspection table (210) and a sliding plate (400) on which a portable body (100) can be moved while seated along the rails (300) are disclosed.

[0042] As will be described below, the sliding body has a rotation sensor (441) attached to a rotational roller (440) that is rotatably coupled to the bottom, so when it receives a rotation signal from the control unit (500), the rotational roller (440) rotates and the sliding plate (400) moves to the first inspection area, the second inspection area, or the third inspection area.

[0043] For example, if three inspectors are working in the inspection area, three sliding plates (400) will be positioned accordingly, and the sliding plates (400) will be moved to a pre-designated position accordingly.

[0044] Furthermore, the rotation sensor (441) installed on the sliding plate (400) is made of a permanent magnet with strong magnetic force, and the guide slot (320) located between the rails (300), which is the part where the rotation sensor (441) rolls, is made of metal, so the coupling is high, and as will be explained below, even if the guide slot rotates together with the rail (300), the sliding plate (400) does not detach from the guide slot (320).

[0045]

[0046] Meanwhile, it includes a separate control unit (500) that controls the movement of the sliding plate (400).

[0047] The control unit (500) may provide rotational force to the rotating roll (440) by transmitting a signal to a separately provided motor (510) as shown in FIG. 2, and as shown in FIG. 3 and FIG. 4 below, when an inspector enters or exits, it receives the signal and controls the sliding plate (400) to move to a stored inspection position, as well as control whether to supply power to or short-circuit the monitor (50) and scope (60) to be described below.

[0048]

[0049] As described above, a position sensor (410) capable of sensing the position of a sliding plate (400) is installed at each point of each rail (300) installed in a plurality of inspection stations.

[0050] Although the position sensor (410) is shown on the rail (300) in the drawing, it is not necessarily limited to this location, and it is also possible for the position sensor (410) to be located between a pair of rails (300).

[0051] The position of the sliding plate (400) is sensed by the corresponding position sensor (410), and the sensing status is transmitted to the control unit (500).

[0052]

[0053] Meanwhile, the control unit (500) is characterized by having a pre-set inspection time schedule stored before the inspector inspects the product to be inspected, and a pre-stored inspection location where the sliding plate (400) must be moved accordingly.

[0054] For example, if an inspector named 'A' is scheduled to be inspected at the second inspection station on the day of inspection, such schedule is stored in the control unit (500), and when a signal is sensed that the inspector named 'A' is entering the inspection station, the sliding plate (400) is automatically moved to the second inspection station.

[0055]

[0056] To this end, as shown in FIG. 3, an inspection room door (30) where an inspection table (210) is located is equipped with an inspection barcode (41) attached to an inspection pass (40) and an access door barcode (31) that can be sensed, and when the inspection barcode (41) and the access door barcode (31) sense each other, the sliding plate (400) moves to a pre-set inspection room position by the control unit (500).

[0057] That is, when another inspector enters, the sliding plate (400) does not move, and only when an inspector who has been saved in advance as a schedule enters does the sliding plate (400) on which the portable main body (100) is seated move to the designated inspection location, thereby preventing inspection work on the wrong inspector or unscheduled products.

[0058]

[0059] Meanwhile, a monitor (50) and a scope (60) for monitoring the product to be inspected are electrically connected to the portable main body (100).

[0060] That is, as shown in FIG. 9, a scope (60) for inspecting the product to be inspected is positioned, and the power supplied to the scope (60) is cut off so that the inspection of the product itself is not performed.

[0061] Of course, although not illustrated in FIG. 9, the power supplied to the monitor (50), which can check whether the product to be inspected and the working status, is short-circuited so that the inspection of the product itself is not performed.

[0062]

[0063] As illustrated in FIG. 4, the control unit (500) is characterized by sending an off signal to the power relay (110) inside the portable body (100) when the sliding plate (400) is not moved to a preset position, thereby causing the power supplied to the monitor (50) and the scope (60) to be short-circuited.

[0064] That is, the present invention has the function of cutting off power supplied to the monitor (50) and the scope (60) so that the inspection work itself cannot be performed when the inspector does not wear the earth ring (10), but also prevents the inspection itself from being performed when the portable main body (100) is not moved to the correct position as described above, thereby preventing product failure due to static electricity and enabling only the correct inspector to inspect the already scheduled product.

[0065]

[0066] Meanwhile, as illustrated in FIGS. 5 and 6, a slot groove (420) of a rectangular shape and a predetermined depth is formed in the sliding plate (400) to which a portable body (100) can be selectively fastened, and a plurality of contact rubber pads (430) are installed along the inner circumference of the slot groove (420) to which a contact force can be applied by pressure when the portable body (100) is fastened.

[0067] That is, there are cases where the inspector must inevitably remove the portable body (100) from the sliding plate (400), and to provide such convenience of selective fastening, a plurality of contact rubber pads (430) to which a contact force by pressure can be applied are installed as shown.

[0068] Meanwhile, furthermore, the rail (300) is rotatably coupled to the inspection unit and the pivot hinge (310) so as to be able to rotate at a predetermined angle, and is characterized in that the rail (300) rotates at a predetermined angle according to the inspector's selection, and the sliding plate (400) also rotates in conjunction with it.

[0069] In other words, if the portable main body (100) is placed on the inspector's inspection area, it is inconvenient during inspection. Furthermore, since there is an electrostatic band line (20), the problem of inspectors connecting this electrostatic band line (20) to other products for inspection is resolved, and when the inspector rotates the sliding plate (400) to secure inspection space within the inspection area, it rotates inward toward the inspection area, thereby securing inspection space.

[0070] Meanwhile, a rotation sensor (441) is attached to the rotation roller (440), and the control unit (500) sends a rotation signal to the rotation sensor (441) to rotate the rotation roller (440) and control the sliding plate (400) to move along the rail (300). In addition, it is also possible to drive the rotation roller (440) by using a separate motor (510) to rotate it.

[0071]

[0072] As illustrated in FIG. 7, the monitor (50) connected to the product to be inspected is characterized by counting the inspection start time after the portable body (100) is moved to a preset position while seated on the sliding plate (400) and sensed by the position sensor (410), displaying the time to the inspector, and accumulating the inspector's inspection start time and transmitting it to the control unit (500). The scope (60) is equipped with an inspection product sensor (61) that recognizes whether the product to be inspected is seated, and through the inspection product sensor (61), the number of inspections by the inspector is displayed on the monitor (50), and the inspection time is accumulated and displayed each time an inspection is performed.

[0073] Through this, the inspector can know the current inspection time in real time, thereby improving the inspector's efficiency and also know in real time how many products have been inspected. Through this system, it is possible to verify that product inspections are currently being carried out smoothly and accurately.

[0074]

[0075] Meanwhile, the portable main body (100) is characterized by having an insertion connection port (610) formed therein to which a strip monitor (600) electrically connected to an electrostatic band line (20) can be selectively connected, and a power relay (110) is installed inside the portable main body (100), and when a signal is detected that the examiner has not connected the earth ring (10) by a human body detection metal connected to the earth ring (10), the signal is transmitted to the power relay (110) so that the power supplied to the monitor (50) and the scope (60) is short-circuited.

[0076] As illustrated in FIG. 9, the portable main body (100) is configured with a power relay (110), a signal that detects whether grounding and an earth ring (10) are worn, an LED indicating the wearing status, a DC power supply, an AC power supply S / W, and an AC / DC adapter, and a wrist strip online monitor that is electrically connected to an electrostatic band and optionally connected to the portable main body (100) is disclosed.

[0077] Of course, the port body has an outlet that can be electrically connected to the monitor (50) and the scope (60), and a function is implemented to short-circuit the power supplied to the monitor (50) and the scope (60) depending on whether the earth ring (10) is worn.

Claims

1. An earth ring (10) that prevents static electricity, an electrostatic band line (20) connected to the earth ring (10), and a portable body (100) that can be electrically connected to the electrostatic band line (20); Including an inspection table (210) composed of multiple inspection rooms where an inspector can inspect the product to be inspected, A pair of rails (300) located on one side of the inspection table (210) and a sliding plate (400) on which the portable body (100) can be moved while seated along the rails (300); A separate control unit (500) for controlling the movement of the above sliding plate (400); comprising, The invention is characterized by the fact that a position sensor (410) capable of sensing the position of the sliding plate (400) is installed at each point of each rail (300) installed in the plurality of inspection stations. The above control unit (500) is characterized by having a pre-set inspection time schedule stored before the inspector inspects the product to be inspected, and a pre-stored inspection location where the sliding plate (400) must be moved accordingly. The inspection room entrance door (30) where the inspection table (210) is located is equipped with an inspection barcode (41) attached to an inspection pass (40) and an access door barcode (31) that can be sensed, and when the inspection barcode (41) and the access door barcode (31) sense each other, the sliding plate (400) moves to a pre-set inspection room position by the control unit (500). An earth ring control system characterized in that a monitor (50) and an oscilloscope (60) for monitoring a product to be inspected are electrically connected to the above portable main body (100), and the control unit (500) sends an off signal to the power relay (110) inside the above portable main body (100) when the sliding plate (400) is not moved to a preset position, thereby causing the power supplied to the monitor (50) and the oscilloscope (60) to be short-circuited.

2. In Claim 1, The above sliding plate (400) has a rectangular slot groove (420) of a predetermined depth formed therein, into which the above portable body (100) can be selectively fastened. It is characterized by having a plurality of contact rubber pads (430) installed along the inner surface of the slot groove (420) such that a contact force can be applied by pressure when the portable body (100) is fastened. The above sliding plate (400) is characterized by having a rotating roller (440) installed so as to be rotatable with respect to the rail (300). The rail (300) is rotatably coupled to the inspection unit and the pivot hinge (310) so as to be able to rotate at a predetermined angle, and is characterized in that the rail (300) rotates at a predetermined angle according to the selection of the inspector, and the sliding plate (400) also rotates in conjunction with it. An earth ring control system characterized in that a rotation sensor (441) is attached to the rotation roller (440), and the control unit (500) sends a rotation signal to the rotation sensor (441) to rotate the rotation roller (440) so that the movable plate moves along the rail (300).

3. In Claim 2, In the monitor (50) connected to the above-mentioned product to be inspected, After the above portable body (100) is moved to a preset position while seated on the sliding plate (400) and sensed by the position sensor (410), the inspection start time is counted and the time is displayed to the inspector. It is characterized by accumulating the inspection start times of the inspector and transmitting them to the control unit (500), and An earth ring control system characterized by the fact that an inspection target product sensor (61) is attached to the above scope (60) to detect whether the inspection target product is seated, the number of inspections by the inspector is displayed on the above monitor (50) through the inspection target product sensor (61), and the inspection time is accumulated and displayed each time an inspection is performed.

4. In Claim 3, The above portable body (100) is characterized by having an insertion connection port (610) formed therein, into which a strip monitor (600) electrically connected to the above electrostatic band line (20) can be selectively connected. An earth ring control system characterized in that the power relay (110) is installed inside the portable main body (100), and when a signal is detected that an inspector has not fastened the earth ring (10) by a human body detection metal coupled to the earth ring (10), the signal is transmitted to the power relay (110) so that the power supplied to the monitor (50) and the scope (60) is short-circuited.

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