KR100715101B1 - Apparatus for inspecting badness of a number of screw hole in inner case of lcd monitor - Google Patents

Abstract

The present invention relates to a plurality of screw hole defect inspection apparatus formed in the inner case of the liquid crystal monitor, and in particular, the present invention comprises: an installation unit 101 for fixing and fixing the inner case (A ') for the liquid crystal monitor; A horizontal moving unit 201 for moving the installation unit 101 in a horizontal direction; A vertical moving part 301 positioned vertically on the horizontal moving part 201 to move the vertical moving part 401 and the inspection part 501 in the vertical direction; An up and down moving unit 401 for raising and lowering the inspection unit 501; A plurality of screw hole defect inspection apparatus is formed in the inner case of the liquid crystal monitor, which is installed in the upper and lower moving parts 401 and includes an inspection unit 501 for inspecting the screw hole A of the inner case A '. In the ship,

 The installation unit 101 forms a plurality of fixing protrusions 12 on the mounting plate 1 and at the same time, installs a transport stand 1 'having a transport groove 11 to the lower center thereof, thereby moving the horizontally moving unit 201. A central portion of the feeder 1 'penetrates the screw rotation shaft 21 of the rotating shaft 21, and the horizontal movement unit 201 is a screw rotation shaft through which the feeder 1' of the mounting plate 1 is installed therethrough. Position 21 at the inner center of the horizontal movable table 2 and install the rotary motor 21 'at one side thereof, and at the same time, provide the guide bar 22 at the upper portion thereof to transfer the mounting plate 1. It is configured to pass through the conveying groove 11 formed in (1 '), and the vertical moving part 301 is in the longitudinal direction on a predetermined position line of the horizontal moving table (2), and the horizontal moving table (2) and In the same configuration, that is, while the screw rotation shaft 31 is connected to the rotary motor 31 'and at the same time, the vertical bar 3 is provided with the guide bar 32 installed thereon, The vertically movable table 3 is integrally configured with the mounting table 302 at its rear end so as to be positioned and configured vertically on a predetermined position line of the horizontally movable table 2 by both side supporters 303, and the upper and lower movable parts. 401 is installed through the feeder 43 to the outer periphery of the screw rotation shaft 31 arranged in the vertical movable table (3), the screw rotation shaft 41 is rotated motor (inside the outer periphery of the feeder 43) ( 41 ') and the upper and lower movable stage 4 having a guide bar 42 formed on the front surface of the screw rotation shaft 41, and the inspection unit 501 of the upper and lower movable stage 4 The operating plate 5 is installed outside the feed table 5 'which is installed through the screw rotation shaft 41 and moves up and down, and at least one driving shaft 51 is provided at one side of the operating plate 5. And a plurality of rotary motors 52 connected to the detection sensor 52 'are respectively connected to the upper end of the drive shaft 51, and the lower end of the drive shaft 51 is By installing the operating shaft 53 to be inserted into the predetermined length inwardly, the locking groove 53 'provided on the upper surface of the operating shaft 53 is fitted to the locking protrusion 51' protruding inside the lower end of the driving shaft 51. At the same time to form a screw to the outer periphery of the lower end of the operating shaft 53 to penetrate through the center of the operating shaft feed guide 55 provided on the lower side to be combined with the male screw mounting base 56, the operating shaft feed guide ( 55 is formed in the guide groove (58 ') of the operating shaft feed guide guide plate 58 installed on the lower end of the operation plate 5 by protruding the locking projection (55') to the inner side of the locking projection (55 '). It is characterized in that one side of the fitting is fixed and the upper portion is configured by connecting to the cylinder rod 54 'of the lifting and lowering cylinder (54).

In addition, the mounting plate 1 of the mounting unit 101 has one or more adsorption plates 13 or air absorbers 15 on the surface of the mounting plate 1 so that the inner case A of the LCD monitor can be more securely positioned. It is a structure which provided the connected suction plate 14.

Accordingly, the present invention provides a screw hole defect inspection device comprising an installation portion and a moving portion of the inner case, and an inspection portion for inspecting the presence or absence of the defect of the screw hole formed in the inner case. All the inspection process can be done automatically to prevent waste of manpower and work time,

In addition, the internal thread of the screw hole is automatically screwed into the screw hole to check the state of the screw hole to detect the presence or absence of the screw hole.Trouble such as tip generation, distortion, double screw, missing screw, etc. It has the advantage of being able to inspect more precisely, quickly and easily.

LCD monitor, inner case, screw hole, mounting part, suction plate

Description

Apparatus for inspecting badness of a number of screw hole in inner case of LCD monitor}

1 is an overall illustration of the present invention,

Figure 2 is an overall view of each moving unit is proposed in the present invention,

3 is a partial side cross-sectional view showing a state of use of the present invention,

Figure 4 is a state diagram of the horizontal moving unit of the present invention,

Figure 5 is a state diagram of the vertical movement of the present invention,

6 and 7 is an embodiment of the upper and lower moving parts of the present invention,

8 is an exemplary view showing an inspection unit according to the present invention;

9 and 10 is a temporary cross-sectional view showing the state in which the operating plate is moved up and down by the upper and lower moving parts of the present invention,

11 is an enlarged partial cross-sectional view of an inspection unit according to the present invention;

12 is an enlarged view of 'a'

Figure 13 is a partial illustration showing a coupling state of the male screw and the screw hole of the present invention,

14 is a diagram illustrating an inner case of a conventional liquid crystal monitor;

15 is a process chart of the present invention;

Figure 16 is another exemplary view of the mounting plate of the present invention,

17 is an enlarged sectional view of a 'b' part.

* Code descriptions for the main parts of the drawings

A: Inner case A ': Screw hole

1: Mounting plate 1 ': feeder

11: transfer groove 12: fixing protrusion

13 suction plate 14 suction plate

15: air adsorber 101: installation

2: horizontal moving table 21: screw rotation shaft

21 ': rotating motor 22: information bar

201: horizontal moving unit 3: vertical moving unit

31: screw rotation shaft 31 ': rotation motor

32: information bar 301: vertical moving part

302: mounting base 303: support

4: Up, high moving table 41: Screw rotation shaft

41 ': rotating motor 42: guide bar

43: transfer table 401: upper and lower moving parts

5: operation plate 5 ': feeder

51: drive shaft 51 ': locking projection

52: rotation motor 52 ': detection sensor

53: operating shaft 53 ': locking groove

54: up / down cylinder 54 ': cylinder rod

55: operating shaft feed guide 55 ': obstruction protrusion

56: male thread mounting base 57: male thread

58: guide plate for moving shaft guide 58 ': guide groove

501: inspection unit

The present invention relates to a plurality of screw hole defect inspection device formed in the inner case of the liquid crystal monitor, to describe in more detail by automatically inspecting a plurality of screw holes formed in the inner case for the liquid crystal monitor through the defect inspection device The purpose of this is to more quickly and easily detect whether the screw hole is defective and to prevent the waste of manpower, thereby improving productivity and preventing defective product delivery.

In general, a liquid crystal monitor is provided with an inner case having a backlight installed therein, wherein a plurality of screw holes are formed on the surface of the inner case so that an outer case or various electronic devices can be installed.

That is, the inner case for the liquid crystal monitor is formed with a plurality of screw holes at regular equal intervals so that the backlight is installed at the front portion thereof and the outer case and the various electronic devices can be mutually coupled with the coupling screws at the outer circumference and the rear thereof.

Therefore, the screw hole formed in the inner case is a very important part in installing the outer case or various electronic devices, and if the screw hole formed in the inner case is bad, the outer case as well as the various electronic devices are safely installed in the inner case. Of course, there is a huge closure that leads to a defect of the LCD monitor.

In more detail, the inner case for a liquid crystal monitor is formed by tapping (thread cutting) a plurality of screw holes so that the outer case or various electronic devices can be installed as a coupling screw to the outer or rear portion thereof. In addition, the screw hole must go through an inspection process to confirm the presence of the defect.

However, the conventional screw hole defect inspection device is impossible to precisely inspect the screw hole formed in the inner case, it was not clearly detected whether the defect and the waste of manpower and time accordingly was a serious situation.

That is, the conventional screw hole inspection device of the inner case for the liquid crystal monitor is located in the upper part of the screw hole of the inner case of the CCTV connected to the inspection system and then illuminates the brightness of a certain brightness from the lower screw hole to the screw portion of the screw hole The black and white appearing (negative, positive appearing when illuminating the projections and grooves of the screw portion) is enlarged and checked in the inspection system through the CCTV, and the presence of screw holes was read.

However, the inspection device as described above changes the expression of black and white from time to time depending on the angle of illumination to the screw hole, so it is difficult to inspect various things such as tip generation, distortion, double screw, missing screw, etc. In this method, the reliability of the screw hole is poor, and in addition, the inspection of a plurality of screw holes is very difficult. Therefore, it is very difficult to set the lighting and CCTV at the same angle and position in a plurality of screw holes. There was no situation.

In addition, since the inspection system for reading the CCTV image to check whether the screw hole is defective is very expensive, its use has a very limited problem.

As described above, the conventional screw hole inspection apparatus of the inner case for the liquid crystal monitor is not practically impossible due to its low reliability and high price.

So now we're simply using a manpower dependent method

The worker is individually inspecting the screw holes in the screw holes formed in the inner case to check the state of the coupling, and the waste of manpower is very serious as well as the efficiency of work and the productivity of the product are lowered. Since the operator inspects the screw holes alternately in a plurality of screw holes alternately, it was impossible to inspect the screw holes more precisely.

The present invention has been invented to solve the conventional problems as described above, in particular screw hole defect inspection device consisting of an inspection portion for inspecting the presence and absence of the mounting portion and the moving portion of the inner case and the screw hole formed in the inner case It prevents wasting of manpower and work time by providing all the inspection process automatically when defect inspection of screw hole formed in inner case of LCD monitor.

In addition, the internal thread of the screw hole is automatically screwed into the screw hole to check the state of the screw hole to detect the presence or absence of the screw hole.Trouble such as tip generation, distortion, double screw, missing screw, etc. It is to have a technical problem that can be inspected more precisely, quickly and easily.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides an installation unit 101 for fixing the inner case (A ') for the liquid crystal monitor;

A horizontal moving unit 201 for moving the installation unit 101 in a horizontal direction;

A vertical moving part 301 positioned vertically on the horizontal moving part 201 to move the vertical moving part 401 and the inspection part 501 in the vertical direction;

An up and down moving unit 401 for raising and lowering the inspection unit 501;

A plurality of screw hole defect inspection apparatus is formed in the inner case of the liquid crystal monitor, which is installed in the upper and lower moving parts 401 and includes an inspection unit 501 for inspecting the screw hole A of the inner case A '. In the ship,

 The installation unit 101 forms a plurality of fixing protrusions 12 on the mounting plate 1 and at the same time, installs a transport stand 1 'having a transport groove 11 to the lower center thereof, thereby moving the horizontally moving unit 201. The center of the feed table (1 ') penetrates the screw rotation shaft 21 of the configuration to be screwed,

The horizontal moving part 201 is located in the inner center of the horizontal moving table 2, the screw rotation shaft 21 through which the conveying table (1 ') of the mounting plate 1 is installed to rotate the motor 21' At the same time to provide a guide bar 22 to the upper portion of the mounting plate 1 is configured to pass through the transfer groove 11 formed in the transfer table 1 ',

In addition, the vertical moving part 301 is in the vertical direction on a predetermined position line of the horizontal moving table (2), that is, the same configuration as that of the horizontal moving table (2), the screw rotation shaft 31 therein the rotating motor (31 ') At the same time it is connected to the upper part of the vertical bar (3) provided with a guide bar 32 is provided,

The vertical movable table 3 is integrally configured with the mounting table 302 at its rear end so as to be positioned and configured in a vertical direction on a predetermined position line of the horizontal movable table 2 by both side supports 303,

The upper and lower moving parts 401 penetrate the feed table 43 to the outer circumference of the screw rotation shaft 31 arranged inside the vertical moving table 3, and the screw rotation shaft 41 inside the outer circumferential path of the transport table 43. ) Is connected to the rotary motor 41 'and installs the upper and lower movable stages 4 with guide bars 42 formed in front of the screw rotation shaft 41,

The inspection unit 501 is installed by penetrating through the screw rotation shaft 41 of the upper and lower movable base 4, the operating plate 5 is configured to be installed on the outer side of the transfer table (5 '),

One or more driving shafts 51 are provided on one side of the operation plate 5 to connect the plurality of rotary motors 52 connected to the sensing sensors 52 'to the upper ends of the driving shafts 51, respectively. In the lower end of the) is installed the operating shaft 53 is inserted into the predetermined length therein, the locking projection (53 ') provided on the upper surface of the operating shaft 53 protrudes inside the lower end of the drive shaft (51) At the same time as to be fitted to the ') and at the same time to form a screw to the outer periphery of the lower end of the operating shaft 53 to pass through the center of the operating shaft feed guide 55 provided on the lower side to be coupled to the male screw mounting base 56,

The actuating shaft feed guide 55 is formed in the guide groove 58 'of the actuating shaft feed guide guide plate 58 installed at the lower end of the actuating plate 5 by protruding the locking protrusion 55' to the inner side thereof. One side of the locking protrusion 55 'is fitted and fixed, and an upper portion thereof is connected to the cylinder rod 54' of the lifting and lowering cylinder 54.

In addition, the mounting plate 1 of the mounting unit 101 has one or more adsorption plates 13 or air absorbers 15 on the surface of the mounting plate 1 so that the inner case A of the LCD monitor can be more securely positioned. It is made by providing a connected suction plate (14).

The present invention configured as described above is an installation portion 101 for mounting and fixing the inner case (A ') for the liquid crystal monitor as shown in the accompanying drawings, and a horizontal moving portion for moving the installation portion 101 in the horizontal direction ( 201, the vertical moving part 301 positioned vertically on the horizontal moving part 201 to move the up and down moving part 401 and the inspection part 501 in the vertical direction, and the inspection part 501. The upper and lower moving parts 401 to be lowered, and the inspection part 501 installed on the upper and lower moving parts 401 to inspect the screw holes A of the inner case A ', By inspecting a plurality of screw holes (A) formed in the inner case (A ') automatically without waste of manpower, it is possible to inspect the presence or absence of the defect more precisely and quickly.

Looking at the inspection process of the screw hole (A) formed in the inner case (A ') of the liquid crystal monitor using the present invention to explain this in more detail, the inner case (A') of the general liquid crystal monitor as shown in FIG. ) Is a surface of which a plurality of screw holes (A) are formed through tapping so that the outer case or various electronic devices can be fixedly installed by the coupling screw.

Therefore, when inspecting the screw hole (A) of the inner case (A ') as described above through the present invention, first, the inner case (A') is placed in the mounting plate (1) of the mounting portion 101 as shown in FIG. In this case, the mounting plate 1 has a plurality of fixing protrusions 12 formed thereon to fit and fix the inner case A ', and at the same time, the suction plate 13 and the suction plate 14 as necessary. ) Is installed, so that the inner case (A ') having a smooth surface is more firmly absorbed and fixed.

As described above, when the inner case A 'is firmly fixed to the upper mounting plate 1 of the mounting unit 101, the mounting plate 1 moves to one side along the horizontal moving unit 2 of the horizontal moving unit 201. I'm going to

4 is screwed to the outer circumference of the screw rotating shaft 21 provided in the horizontal moving table 2, the feed table (1 ') provided in the lower center of the mounting plate (1), the screw rotating shaft 21 ) Is rotated by the driving of the rotary motor 21 'connected to one side thereof, and moves the feed table 1' in the horizontal direction so that the upper mounting plate 1 is on the center line of the vertical moving part 301. To be located.

That is, since the screw rotation shaft 21 and the feed table 1 'are formed and coupled to the inner and outer circumferential surfaces of the screw symmetrically, the feed table 1' is rotated when the screw rotation shaft 21 is rotated in place. It is to move in the horizontal direction along the screw rotation shaft (21).

In addition, the conveying groove 11 is provided in the upper portion of the conveying plate 1 'of the mounting plate 1 so as to be fitted to the outer circumference of the guide bar 22 of the horizontal movable table 2 so as to transfer the mounting plate 1. When the base 1 'is moved along the screw rotation shaft 21, it shakes or moves.

When the mounting plate 1 having the inner case A 'placed thereon is moved on the center line of the vertical moving part 301 by the horizontal moving part 2, the vertical moving part 301 in the vertical moving part 301. The upper and lower moving parts 401 and the inspection part 501 located at the front side are moved in the vertical direction and positioned on the upper part of the installation plate 1.

Here, since the vertical movement table 3 of the vertical movement unit 301 has the same configuration and operation as the horizontal movement table 2, the transfer stage 43 of the upper and lower movement stage 4 is the vertical movement stage 3. It is screwed to the screw rotation shaft 31 of the to move in the longitudinal direction by the rotation.

In addition, the upper and lower movable stage (4) installed on the vertical movable stage (3) also has the same configuration and operation as the horizontal movable stage (2), the inspection unit 501 on the screw rotation shaft 41 in the upper and lower movable stage (4) Since the feed plate 5 'provided at the rear of the operating plate 5 is screwed, the operating plate 5 is also moved up and down by the screw rotation shaft 41 of the upper and lower movable tables 4. .

That is, the vertical movement table 3 moves the upper and lower movement stages 4 in the vertical direction, and the operating plate 5 moves up and down by the upper and lower movement stages 4.

Accordingly, the horizontal movable stage 2, the vertical movable stage 3, and the upper and lower movable stage 4 are all automatically controlled by the control system as shown in FIG. 15 so that the inner case A 'is placed thereon. ) Is positioned on the center line of the vertical slide (3), the vertical slide (3) is the inner case (A) located on the mounting plate (1) the inspection unit 501 located on the front It is moved in the longitudinal direction so as to be in line with the screw hole (A) of '), and the horizontal moving table (2) is always used by the control system when inspecting the plurality of screw holes (A) formed in the inner case (A'). ) And the vertical movable table (3) and the upper and lower movable tables (4) are operated, the inspection unit 501 and the plurality of screw holes (A) of the inner case (A ') can be placed in the same line and the inspection can be automatically performed. To make sure.

As described above, when the inspection unit 501 is positioned in the same line as the screw hole A of the inner case A by the vertical movement table 3, the operation plate of the vertical movement platform 3 and the inspection unit 501. The upper and lower movable bases (4) located between (5) operate to move the operation plate (5) to the lower position near the upper portion of the inner case (A ') of the installation plate (1), wherein the inspection unit (501) The inspection male thread 57 provided at the lower side of the c) is positioned in the same line as the screw hole A to be inspected among the plurality of screw holes A of the inner case A '.

When the preparation step for the screw hole (A) defect inspection of the inner case (A ') as described above is finished, the inspection unit 501 inside the male screw 57 installed on the operating plate (5) as the raising and lowering cylinder (54) The screw hole A is lowered into the screw hole A of the case A ', so that the screw is coupled, so that the defect inspection of the screw hole A is performed.

 To explain this in detail, as shown in FIGS. 9 and 10, the operating plate 5 of the inspection unit 501 has a driving shaft 51 at one side thereof, and the upper portion of the driving shaft 51 has a detection sensor 52 ′ and a rotating motor. The connection groove 52 and the lower end of the drive shaft 51 is provided with a working shaft 53 inserted into the predetermined length therein, so that the locking groove 53 'provided on the upper surface of the working shaft 53 has a lower end of the drive shaft 51. It is fitted to the engaging projection (51 ') protruding on the inside.

In addition, the outer periphery of the lower end of the operating shaft 53 forms a screw to penetrate the center of the operating shaft feed guide 55 provided at the lower side thereof to be coupled to the male screw mounting base 56 on which the male screw 57 is installed. The shaft transfer guide 55 protrudes the engaging protrusion 55 'to the upper side, and the locking protrusion is guided to the guide groove 58' of the operating shaft transfer guide guide plate 58 installed at the lower end of the operating plate 5. The inner surface of the portion 55 'is fitted and fixed, and the upper end thereof is connected to the cylinder rod 54' of the lifting and lowering cylinder 54.

Therefore, when operating the raising and lowering cylinder 54 installed on the operating plate 5, the operating shaft feed guide 55 connected to the cylinder rod 54 'is fixed along the operating shaft feed guide guide plate 58. Simultaneously lowering the working shaft 53 installed at the center of the working shaft feed guide 55 and the male screw mounting base 56 provided with the male screw 57 while lowering the distance, the lower end of the male screw 57 is the inner case A '. Make contact with the top of the screw hole (A).

At this time, when the operating shaft 53 is simultaneously lowered by the operating shaft feed guide 55 as shown in FIG. 12, the upper portion of the operating shaft 53 is inserted into the driving shaft 51 by a predetermined length and at the same time the operating shaft ( The locking groove 53 'of a predetermined length formed on the driving shaft 51 is fixed to the locking projection 51' protruding inside the lower end of the driving shaft 51, so that the upper end of the operating shaft 53 is in the driving shaft 51. In addition to being able to safely change from, it prevents the departure.

Therefore, when the male screw 57 provided in the male screw mounting base 56 by the operation of the raising and lowering cylinder 54 is in contact with the upper part of the screw hole (A) of the inner case (A '), it is connected to the operating shaft (53) The drive shaft 51 is rotated by the rotation motor 52 to rotate the operating shaft 53 at the same time to screw the lower male thread 57 to the screw hole (A) of the inner case (A ').

As shown in FIG. 13, when the rotary motor 52 on the driving shaft 51 rotates the driving shaft 51, the locking groove 53 ′ of the operating shaft 53 is connected to the locking protrusion 51 ′ of the driving shaft 51. The driving shaft 51 and the operating shaft 53 are rotated together, and at the same time, the operating shaft 53 has its lower end screwed into the operating shaft conveyance guide part 55, so that the actuating shaft conveying part The male screw 57 installed on the male screw mounting base 56 at the lower end of the operating shaft 53 while screwing down a predetermined distance by screw rotation along the screw 55 is screwed into the screw hole A of the inner case A '.

Then, the detection sensor 52 'connected to the rotary motor 52 detects the rotational load generated when the male screw 57 is screwed into the screw hole A of the inner case A' and detects the defect. Will be examined.

As described above, in the present invention, the defect inspection of the screw hole A formed in the inner case A 'of the LCD monitor automatically couples the male screw 57 into the screw hole A, and thus the male screw 57 according to the combination thereof. The rotational load of the sensor is measured by the sensor 42 ', and the inspection efficiency is much higher than that of the conventional image measurement of the screw hole A. Therefore, tip generation, distortion, double screw and missing of the screw hole A are eliminated. Of course, it is possible to more accurately detect a defect such as, as well as the operating plate (5) of the inspection unit 501, the at least one drive shaft 51 and the operating shaft 53 is connected to the external thread (57) to operate Since the inspection is carried out alternately by installing separately, it is possible to quickly and easily inspect the screw holes (A) of various specifications formed in the inner case (A ') of the LCD monitor more quickly and also the inner plate with the mounting plate (1) (A ') with synthetic resin material for easy fixing The suction plate 14 to which the funnel-shaped adsorption plate 13 or the air adsorption device 15 is connected was installed to prevent problems such as the inner case A 'from being shaken or changed in position.

The present invention can perform a large amount of inspection in a short time by performing a screw hole defect inspection of the inner case automatically without waste of manpower, and at the same time to reduce the working time accordingly, The screw hole of the inner case is directly screwed together, and the rotational load according to the screw connection is measured to check the absence or absence of the screw hole.There are problems such as tip generation, distortion, double screw, missing screw, etc. in the screw hole. By inspecting presence and absence more precisely, it firmly prevents leakage of inner case with bad screw hole. Furthermore, it is very inexpensive compared to screw hole defect inspection device formed in inner case of LCD monitor, which is expensive. It is a very innovative invention such as can be planned.

Claims (2)

An installation unit 101 for fixing and fixing the inner case A ′ for the liquid crystal monitor; A horizontal moving unit 201 for moving the installation unit 101 in a horizontal direction; A vertical moving part 301 positioned vertically on the horizontal moving part 201 to move the vertical moving part 401 and the inspection part 501 in the vertical direction; An up and down moving unit 401 for raising and lowering the inspection unit 501; A plurality of screw hole defect inspection apparatus is formed in the inner case of the liquid crystal monitor, which is installed in the upper and lower moving parts 401 and includes an inspection unit 501 for inspecting the screw hole A of the inner case A '. In the ship, The installation unit 101 forms a plurality of fixing protrusions 12 above the installation plate 1 and at the same time installs a transport table 1 'having a transport groove 11 to the lower center thereof, thereby moving horizontally. The center of the feed table (1 ') penetrates the screw rotation shaft 21 of the configuration to be screwed, The horizontal moving part 201 is located in the inner center of the horizontal moving table 2, the screw rotation shaft 21 through which the conveying table (1 ') of the mounting plate 1 is installed to rotate the motor 21' At the same time to provide a guide bar 22 to the upper portion of the mounting plate 1 is configured to pass through the transfer groove 11 formed in the transfer table 1 ', In addition, the vertical moving part 301 is in the vertical direction on a predetermined position line of the horizontal moving table (2), that is, the same configuration as that of the horizontal moving table (2), the screw rotation shaft 31 therein the rotating motor (31 ') At the same time the vertical bar (3) is installed at the top of the guide bar 32 is installed, The vertical movable table 3 is integrally configured with the mounting table 302 at its rear end so as to be positioned and configured in a vertical direction on a predetermined position line of the horizontal movable table 2 by both side supports 303, The upper and lower moving parts 401 penetrate the feed table 43 to the outer circumference of the screw rotation shaft 31 arranged inside the vertical moving table 3, and the screw rotation shaft 41 inside the outer circumferential path of the transport table 43. ) Is connected to the rotary motor (41 '), and the upper and lower movable stage (4) having a guide bar 42 formed in front of the screw rotation shaft 41 is configured, The inspection unit 501 is installed by penetrating through the screw rotation shaft 41 of the upper and lower movable base 4, the operating plate 5 is configured to be installed on the outer side of the transfer table (5 '), One or more driving shafts 51 are provided on one side of the operation plate 5 to connect the plurality of rotary motors 52 connected to the sensing sensors 52 'to the upper ends of the driving shafts 51, respectively. In the lower end of the) is installed the operating shaft 53 is inserted into the predetermined length therein, the locking projection (53 ') provided on the upper surface of the operating shaft 53 protrudes inside the lower end of the drive shaft (51) At the same time as to be fitted to the ') and at the same time to form a screw to the outer periphery of the lower end of the operating shaft 53 to pass through the center of the operating shaft feed guide 55 provided on the lower side to be coupled to the male screw mounting base 56, The actuating shaft feed guide 55 is formed in the guide groove 58 'of the actuating shaft feed guide guide plate 58 installed at the lower end of the actuating plate 5 by protruding the locking protrusion 55' to the inner side thereof. One side of the locking protrusion 55 'is fixed so that the upper portion is formed in the inner case of the liquid crystal monitor, characterized in that configured to connect to the cylinder rod 54' of the raising and lowering cylinder 54 Screw hole inspection device. The method of claim 1, One or more adsorption plates 13 or air absorbers 15 are connected to the mounting plate 1 surface to the mounting plate 1 of the mounting unit 101 so that the inner case A of the LCD monitor can be more securely positioned. A plurality of screw hole defect inspection apparatus formed in the inner case of the liquid crystal monitor, characterized in that the suction plate 14 is provided.

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