KR100683031B1 - Apparatus for feeding frame and adjusting camera position of vision system for LCD/PDP monitor frame machine - Google Patents

Abstract

The present invention relates to an apparatus for transporting a product and adjusting a camera position in a vision system that automatically inspects and measures the presence and absence of a tap and a tap inside diameter by using an inspection camera and a measuring camera after manufacturing an LCD / PDP monitor frame.

The present invention can perform the task of inspecting the presence of the tap machined on the frame and the measurement of the inner diameter of the tab in an automated process to improve the overall workability and productivity without the burden of additional labor costs, and also tab inspection In addition to the automated concept using cameras, the product can be moved and the position of the camera automatically adjusted to improve the accuracy of inspection and measurement, while at the same time performing inspection and measurement tasks more effectively. In particular, the tab inspection and measurement process is carried out in an automated continuous process for frame manufacturing to improve the overall efficiency of the frame manufacturing process. Provide the device.

LCD / PDP monitor, frame, vision system, tap inspection and measurement

Description

Apparatus for feeding frame and adjusting camera position of vision system for LCD / PDP monitor frame machine}             

1 is a front view showing the overall structure of a vision system according to the present invention

2 is a side view of FIG. 1

3 is a plan view of FIG.

Figure 4 is a front view showing the main structure of the vision system according to the present invention

5 is a side view of FIG. 4

6 is a plan view of FIG.

Figure 7 is a front view showing the transmission structure of the motor for width adjustment of the vision system according to the present invention

Figure 8a, 8b is a side view showing the camera and the conveyor movement state of the vision system according to the present invention

9a and 9b are plan views showing a camera and a conveying state of the vision system according to the present invention.

<Explanation of symbols for main parts of drawing>

10a, 10b: drive shaft 11a, 11b: auxiliary shaft

12: drive pulley 13: auxiliary pulley

14: transfer belt 15: transfer motor

16a, 16b: inspection camera 17a, 17b: measurement camera

18: power belt 19: guide rail

20: slide plate 21: screw shaft

22: motor for width adjustment 23: slide block

24: slide bar 25: bearing block

26: guide roller 27: post block

28: holder assembly 29: power pulley

The present invention relates to an apparatus for transferring a product and adjusting a camera position in a vision system that automatically inspects and measures the presence and absence of a tap and a tap inside diameter by using an inspection camera and a measuring camera after manufacturing an LCD / PDP monitor frame. Specifically, a product inspection part that performs inspection and measurement while continuously transporting the product, a camera part that accurately inspects and measures the presence and absence of taps and the inside diameter by using an inspection camera and a measurement camera, and inspects the camera according to the specifications of the product. And a vision system that includes a moveable conveyor part that adjusts the measuring range, which improves workability and productivity compared to conventional manual methods, and increases the accuracy of inspection and measurement tasks. LCD / PDP monitor frame manufacturing facility to improve quality It relates to a product conveying and positioning device of the camera vision system.

In general, in the information society of recent years, the liquid crystal display (LCD) has been gradually expanding its application fields such as portable video cameras, TVs, car navigation systems, and computer monitors.

Unlike conventional CRTs, liquid crystal displays (LCDs) have a very low power consumption, and because of their advantages of being thin and light because they do not use an electron gun, they have received great attention as display devices of information devices such as notebook computers and monitors.

LCD displays images or characters by changing the transmission characteristics of crystals to light by applying a power supply voltage to the liquid crystal material. Since the liquid crystal material itself is very fragile, the actual LCD element is mounted in the mainframe and It is produced in a structure that wraps with a predetermined protective chassis.

For example, an LCD monitor may include a module consisting of a liquid crystal material to form a screen, a frame surrounding the exterior of the module, a PCB assembly having a circuit such that an electrical signal applied to the module implements each image, and the components. It consists of a number of fastening structures such as front and rear chassis to form a case.

These frames are blanking for outer contour machining → Piercing for hole machining → Lancing / Forming for hook machining → Box-bending for outer bending machining → Bezel It is manufactured through the process of opening (opening) for processing → chamfer (removing bezel) for removing bezel part → external inspection and measuring the presence or absence of hole or tap and measuring tap inner diameter.

On the other hand, in the case of the PDP, the operation method is remarkably different from that of the LCD, but the combined configuration of the remaining components such as the screen configuration module, the frame, and the PCB assembly is manufactured through the same process as the LCD.

In this case, the inspection of the presence or absence of the tap or the tap diameter measurement process is a process of checking the presence of the tab processed on the frame for mounting with the module, fastening with the chassis, or measuring the inner diameter of the tab. In order to fasten the parts, the position of the tab and the size of its inner diameter must be precisely processed, but sometimes tap processing is not performed properly due to poor machining, etc. After measuring the inside diameter, the product is shipped.

However, the tap inspection and measurement of the existing frame is carried out in a separate process after manufacturing the frame, and as a result of the operator performing visual inspection, the workability and productivity are not only reduced, but also the labor cost is increased. However, due to the visual inspection, there is a problem that the inspection accuracy is much lowered and the defective rate of the product is increased.

Accordingly, the present invention has been made in view of the above, and the operation of inspecting the presence of the tab processed in the frame and measuring the inner diameter of the tab by an automated process, the overall workability or Productivity can be improved, and the inspection and measurement of taps can be carried out by an automated concept using a camera, and the accuracy of inspection and measurement can be improved by automatically adjusting the position of the camera for the product transfer and the product. At the same time, the inspection / measurement can be performed more effectively. In particular, the tab inspection and measurement process is carried out in an automated continuous process for manufacturing the frame, thereby increasing the overall efficiency of the frame manufacturing process. Product transfer and camera positioning device of vision system for manufacturing facility Its purpose is to provide this.

The present invention for achieving the above object is used in parallel with the moving direction of the product while being supported on the frame to convey the product, using two sets of inspection cameras and measuring cameras arranged on both sides of the conveyor part A camera part for inspecting and measuring the presence of a tap on the product and a tap inside diameter that are carried out along the conveyor in a photographing manner, and the positions of the inspection camera and the measurement camera of any one of the camera parts in the width direction according to the size of the product. Characterized in that it comprises a width adjustment part to adjust to.

In addition, the conveyor part is supported on both sides of the frame rotatable structure and arranged in parallel with each other at the same time and the front and rear drive shaft and the auxiliary shaft between the rotatable together by the belt transmission structure, and is mounted on the drive shaft and the shaft and At least four drive pulleys rotatable together and at least four auxiliary pulleys mounted on the auxiliary shaft freely rotatable about the shaft, and at least four rows of side-by-side transfer belts spanning the drive pulley and the auxiliary pulleys, on the frame It is fixedly installed and characterized in that it comprises a transfer cap for operating any one drive shaft in a belt transmission structure.

In addition, the camera part is characterized in that it comprises a set of inspection cameras and measuring cameras and the other set of inspection cameras and measuring cameras which are disposed on both sides with the conveyor parts interposed and positioned facing each other.

In addition, at least two pulleys from each of the pulleys mounted on the drive shaft and the auxiliary shaft are mounted in a spline structure and a slide structure with respect to the shaft, characterized in that the position movement in the width direction is possible by the width adjusting part.

In addition, the one set of the inspection camera and the measuring camera is installed on the slide plate movable in the width direction while being guided by the guide rail on the frame characterized in that the position can be moved in the width direction by the width adjustment part. .

In addition, the width adjustment part extends to one side via the bottom of the conveyor part and at the same time is arranged in the width direction while being supported in both ends in a rotatable structure, and one side of the screw shaft is connected to the pulley motor structure to transfer power A slide coupled to the width adjusting motor and the pulley side of each of the two sets of inspection and measurement cameras and two pulleys movably mounted on the driving shaft and the auxiliary shaft while being coupled through the screw shaft and moved by screw transmission. It is characterized by including a block and a slide bar.

In addition, the two pulleys mounted on the drive shaft and the auxiliary shaft to be movable in position are positioned to be moved together by a slide bar capable of being axially moved while being positioned between the pulleys while being coupled through each axis.

In addition, the drive shaft coupling portion of the slide bar is characterized in that the bearing block to avoid rotation interference with the shaft.

In addition, the conveyor part is characterized in that it further comprises a plurality of guide rollers for guiding the progress of the product while being arranged side by side at a predetermined interval along the side of the conveyance belt while being supported on the frame.

In addition, the inspection camera of the camera part is supported by a holder assembly coupled on the post block while being able to adjust the vertical position, front and rear position, angle.

In addition, the conveyor part including the camera part is disposed between the front product supply unit and the product extraction unit of the rear that can proceed the conveyor for the product to enable the continuous process of the supply, inspection and measurement, take-out process of the product It features.

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

1 to 3 is a front view, a side view and a plan view showing the overall structure of the vision system according to the present invention.

As shown in Figures 1 to 3, at the intermediate height of the frame 100, a conveyor part (I) for guiding the product transfer in the longitudinal direction of the front and rear, is installed, the front and rear of the frame 100, that is, the conveyor part Camera parts (II) for tap inspection and measurement of the conveyed product are installed in the left and right width directions of (I), and the position is adjusted to the specification of the supplied product at the rear of the frame 100. To this end, a width adjusting part (III) for adjusting the width of some pulleys of the conveyor part (I) and some cameras of the camera part (II) is installed.

Therefore, when the product is transported by the conveyor part (I), the presence or absence of tap presence and tap diameter measurement of the product are performed by the camera parts (II) on both sides, and the image values thus measured and measured are measured by the respective products. Data such as tap position, internal diameter size, etc., are stored and sent to a control part (not shown) that contains software to run it (e.g., a program containing software used in a typical vision system). In the control part, the input image value is processed by the normal program, and the inspection and measurement results are output to the screen.

For example, you can display the results of the inspection and measurement at the tap position of the product on the screen.You can check for the presence of the tap and display OK in blue if present and NG in red if not present. .

In addition, by measuring the inner diameter of the tap, the diameter value can be displayed numerically, and if it is within the allowable value, OK can be displayed in blue and the NG can be displayed in red if it is outside the allowable value.

In addition, the control part may play a role of controlling the width adjusting part to move to the product's specification to a pre-learned position when the product specification is determined.

In addition, the camera part and the conveyor part may be arranged between the front product supply unit (not shown) and the rear product extraction unit (not shown) for advancing the product to the conveyor means, thus supplying, inspecting and measuring the product. In this case, the extraction process may be a continuous process.

In other words, if the product supply unit, the camera part and the conveyor part which are arranged at the final stage of the frame manufacturing equipment are arranged in close proximity to each other, and the product taking out part is placed close to the end, the product supply, inspection, measurement, and extraction processes are continuously automated. It can be done with

On the other hand, the vision system of the present invention may be used independently, in which case the supply and withdrawal of the product may depend on the manual work of the operator.

The operation of the camera part and the conveyor part as described above is outlined as follows.

When the product supplied from the product supply flows into the conveyor part, the product flows without stopping by the operation of the transfer motor, and inspection and measurement work is performed by acquiring images from the inspection camera and the measurement camera of the camera part.

When the inspection and measurement of the product is finished after passing between the camera parts, the product is taken out to the product takeout part. At this time, the passed product flows directly to the conveyor means of the product takeout part, and the failing product is a separate motor means of the product takeout part. It can be taken out by an operator after being lifted up by the operation of (not shown).

The product continues to be supplied so that work can be carried out continuously unless an operator stops or encounters an abnormality.

4 to 6 is a front view, a side view and a plan view showing the main structure of the vision system according to the present invention.

As shown in Figures 4 to 6, the conveyor part for the transfer of products will be described first.

The front and rear two drive shafts 10a and 10b arranged side by side along the front and rear longitudinal direction while being disposed long across the width direction of the frame and the two auxiliary shafts 11a and 11b positioned therebetween It is supported at both ends in a rotatable structure on the top.

In addition, four drive pulleys 12 are mounted on the two drive shafts 10a and 10b, and four auxiliary pulleys 13 are mounted on the two auxiliary shafts 11a and 11b.

At this time, each of the driving pulley 12 and the auxiliary pulley 13 can be paired, two of the four pulleys mounted on one axis is fixed position on the axis, the other two are located along the axis Will be able to move.

For example, the two front drive pulleys 12 mounted to the drive shafts 10a and 10b are integrally assembled to the shaft so that they can rotate together with the shaft in place, and the rear two drive pulleys 12 In the case of the auxiliary pulley (13) mounted on the auxiliary pulley (13) can be moved in the width direction along the axis while being assembled with a spline structure on the shaft and can rotate together with the shaft. The dog is fixed in position on the shaft, and the rear two are assembled to slide through the shaft so that they can be moved while moving in the width direction along the axis.

The positional movement of the pulley will be described in detail later.

Here, the auxiliary pulleys 13 mounted on the auxiliary shafts 11a and 11b mean freely rotatable idle pulleys, and bush-shaped spacers are mounted between the pulleys to maintain a gap between neighboring pulleys. Will be.

The drive shafts 10a, 10b and the auxiliary shafts 11a, 11b have a vertical height difference. Accordingly, the driving pulley 12 and the auxiliary pulley 13 mounted on each shaft also have a vertical height difference. Since it has two drive pulleys 12 and the two auxiliary pulleys 13, the conveying belt 14 spanning in one row can proceed with a predetermined closed curve trajectory.

In the present invention, a total of four rows of conveying belts 14 are provided, and the product is placed on the belt at this time to be transported.

The transfer motor 15 for operating the drive shafts 10a and 10b is installed on a frame below the belt line, and the drive shafts 10a and 10b can be provided with a belt transmission structure with the drive shafts 10a and 10b. do.

For example, the power pulley 29 is mounted at one end of the shaft of the transfer motor 15 and the front drive shaft 10a, respectively, and the power belt 18 is connected between the power pulleys 29 so that the motor is driven. The drive shaft can be rotated, and power transmission between the front and rear drive shafts 10a and 10b can also be made by the power pulley 29 mounted on the other end of each shaft and the power belt 18 connected between them.

In addition, one side of the conveying belt 14 is provided with a plurality of guide rollers 26 are arranged side by side at a predetermined interval along the longitudinal direction, one side portion of the product during contact with the guide roller 26 You will be guided to the correct route.

Next, camera parts for tap inspection and measurement of the product will be described.

The camera part is composed of two sets of inspection cameras 16a and 16b and measurement cameras 17a and 17b which are arranged on both sides of the conveyor part, i.e., in the left and right width directions of the frame, and the inspection cameras 16a and (b). 16b) and the measuring cameras 17a and 17b maintain a constant distance in the longitudinal direction so that the tap measuring operation can be sequentially performed after the tap inspection, and both are electrically connected to the control part to control the captured image. I can send it to the part side.

In addition, the two sets of inspection cameras 16a, 16b and measurement cameras 17a, 17b are arranged at positions facing each other in the width direction to simultaneously perform inspection and measurement on both sides of the product. It becomes possible.

Among the two sets of inspection cameras 16a and 16b and the measurement cameras 17a and 17b, the inspection camera 16a and the measurement camera 17a disposed below (when referring to FIG. 6) are arranged on a frame. The inspection camera 16b and the measurement camera 17b, which are installed in a fixed structure and disposed above, are installed in a structure fixed on the slide plate 20 movable in the width direction.

Accordingly, the one set of the inspection camera 16b and the measurement camera 17b can be moved together with the slide plate 20, and the slide plate 20 is installed on both sides of the frame parallel to each other. It is possible to move while receiving the guide by the guide rail (19).

In this case, a normal LM guide or the like may be applied to the guide rail.

The positional movement of the camera will be described in detail later.

In addition, the inspection camera 16a, 16b is supported using a post block 27 fixedly installed on the frame or slide plate 20, that is, height adjuster 28a, length adjuster 28b. And a holder assembly 28 composed of an angle adjuster 28c is coupled to the vertical member of the post block 27, and the inspection camera 16a is supported in a structure coupled to the holder assembly 28 at this time. .

Accordingly, the inspection camera (16a, 16b) through the operation of the holder assembly 28 it is possible to adjust the upper and lower positions, front and rear positions, angles according to the specifications of the product.

The measuring cameras 17a and 17b are supported by a structure in which the rear end body part is directly coupled to the vertical member of the post block 27 fixedly installed on the frame or the slide plate 20, and in this case, The measuring cameras 17a and 17b have a structure capable of adjusting the front and rear positions by using the slots of the post block 27.

On the other hand, the present invention provides a width adjustment part that can move the width position of the conveyor part and the camera part in accordance with the specifications of the product.

The width adjusting part is composed of a width adjusting motor 22 as a driving means, a screw shaft 21 as a moving means, a slide block 23 and a slide bar 24 as a part connected directly to the moving side.

The width adjustment motor 22 is fixedly installed at one end of the frame in a width direction, and a power pulley 29 is mounted on the shaft thereof to transmit power to the screw shaft 21 using the power belt 18. .

The screw shaft 21 is supported by a structure in which both ends are rotatable on the block body while being disposed to extend a predetermined length from the bottom of the conveyor part to one end in the width direction, and a power pulley 29 is mounted at one end to the power belt 18. Through the power of the motor can be received.

At this time, as shown in Figure 7, the power belt 18 is connected between the power pulley 29 of the screw shaft 21 and the power pulley 29 of the motor 22 for width adjustment tension is maintained by the idler. It becomes possible.

The slide block 29 is a portion for moving the camera part, and is coupled to the screw shaft 21 through the screw transmission, the bottom surface of the slide plate 20 is installed with the inspection camera 16b and the measuring camera 17b Are integrally coupled to.

Accordingly, when the screw shaft 21 rotates, the entire slide plate 20 including the inspection camera 16b and the measurement camera 17b is moved in the width direction by the slide block 29 moving along the axis. Will be able to move.

The slide bar 24 is a member disposed in the longitudinal direction at the bottom of the conveyor part, and is coupled through the screw shaft 21 through two screw shafts (10a, 10b) while being screw-transmitted at the same time, At this time, the position to be coupled through is between two movable pulleys.

Accordingly, when the screw shaft 21 rotates, two pulleys, that is, eight pulleys in each axis, are moved in the width direction by the slide bar 24 moving along the axis, thereby moving the position.

At this time, the four pulleys in the auxiliary shaft (11a), (11b) is able to move together via the transport belt 14 when the four pulleys in the drive shaft (10a), (10b) is moved.

In particular, the through coupling portion with the shaft of the slide bar 24 is coupled using the bearing block 25, so that the pulleys in the driving shafts 10a and 10b are connected to the shaft through the bearings embedded in the bearing block 25. It can be pushed by the bearing block 25 while avoiding the interference of rotation.

Here, each pulley is able to move at the same time each time the slide bar 24 moves.

8A and 8B and 9A and 9B are side and plan views illustrating a camera and a conveyor movement state of a vision system according to the present invention.

Once the specification of the product is determined, the width of the conveyor part for conveying the product and the position of the camera part for product inspection and measurement can be changed.

For example, as shown in FIGS. 8A and 8B, in the case of a small width product 200a, the forward operation of the width adjusting motor 22 and the driving action of the screw shaft 21 and the slide block 23 and the slide are performed. By using the movement of the bar 24, the widthwise distance between the moving side inspection camera 16b and the measurement camera 17b and the pulleys can be narrowed.

On the other hand, as shown in Figures 9a and 9b, in the case of a large product 200b through the reverse operation of the width-adjusting motor 22 as above, the moving side inspection camera 16b, the measuring camera 17b and the pulley These can be widened in the width direction of the teeth.

Here, the width interval of each of the movable side members through the operation of the width adjusting motor 22 may be set in advance using the control by the control part when the specification of the product is determined before the start of work.

As described above, the present invention provides a vision system for automatically inspecting and measuring the existence of a tap and a tap inner diameter by using an inspection camera and a measuring camera, thereby reducing the overall workability or productivity without burdening additional labor costs according to the automation process. There is an advantage that can be improved, and in particular, since the inspection and measurement is performed through the camera, it is possible to increase the accuracy of the inspection and measurement, and thus there is an advantage of expecting an improved product quality.

In addition, by allowing the tab inspection and measurement process to proceed in conjunction on the automated continuous process for manufacturing the frame, there is an effect that can increase the overall efficiency of the frame manufacturing process.

Claims (11)

In the vision system for LCD / PDP monitor frame manufacturing equipment, Supported on the frame and arranged parallel to the product's direction of travel, the conveyor part transports the product, and two sets of inspection cameras and measurement cameras arranged on both sides of the conveyor part to shoot along the conveyor. Including a camera part for inspecting and measuring the presence of a tap on the product and a tap inner diameter, and a width adjusting part for adjusting the position of any one set of the inspection camera and the measurement camera in the width direction according to the size of the product. The product transfer and camera positioning device of the vision system for LCD / PDP monitor frame manufacturing equipment, characterized in that made. The drive shafts 10a and 10b of the front and rear sides which are arranged in parallel with each other while being supported at both ends in a rotatable structure on the frame and are rotatable together by a belt transmission structure, and an auxiliary shaft therebetween. (11a), (11b) and at least four drive pulleys (12) mounted on the drive shaft (10a), (10b) and rotatable with the shaft, and mounted on the auxiliary shaft (11a), (11b). At least four auxiliary pulleys 13 freely rotatable about an axis, at least four rows of side-by-side transfer belts 14 spanning between the drive pulley 12 and the auxiliary pulley 13, and fixedly mounted on the frame. A product transfer and camera position adjusting device for a vision system for an LCD / PDP monitor frame manufacturing facility, comprising a transfer motor 15 for operating any one drive shaft 10a in a belt transmission structure. The method according to claim 1, wherein the camera part is disposed on both sides with the conveyor part interposed therebetween, one set of inspection camera 16a and one set of inspection camera 16b different from the measurement camera 17a and A product transfer and camera positioning device for a vision system for an LCD / PDP monitor frame manufacturing facility, comprising a measuring camera (17b). The method according to claim 2, wherein at least two pulleys of each pulley mounted on the drive shaft (10a), (10b) and the auxiliary shaft (11a), (11b) are mounted to the width adjustment part while being mounted in a spline structure and a slide structure with respect to the shaft The product transfer and camera positioning device of the vision system for LCD / PDP monitor frame manufacturing equipment characterized in that the position movement in the width direction by means of. The width adjusting part of claim 3, wherein the set of inspection cameras 16b and measurement cameras 17b is installed on a slide plate 20 that is movable in the width direction while being guided by the guide rails 19 on the frame. A product transfer and camera position adjusting device of a vision system for an LCD / PDP monitor frame manufacturing facility, characterized in that the position movement in the width direction is made possible. The screw shaft 21 according to any one of claims 1, 4 or 5, wherein the width adjusting part extends to one side through the bottom of the conveyor part and is disposed in the width direction and supported at both ends in a rotatable structure, and the screw The width adjustment motor 22 is connected to one side of the shaft 21 by a pulley electric transmission structure and transmits power, and the set of inspection camera 16b is coupled through the screw shaft 21 and moved by screw transmission. And a slide block 23 coupled to each of the two side pulleys movably mounted on the measurement camera 17b side and the drive shafts 10a, 10b and the auxiliary shafts 11a, 11b. A product transfer and camera positioning device for a vision system for an LCD / PDP monitor frame manufacturing facility, comprising a slide bar (24). The pulley according to claim 2 or 4, wherein the two pulleys mounted on the driving shafts 10a and 10b and the auxiliary shafts 11a and 11b to be movable in position are coupled between the pulleys at the same time. Product movement and camera positioning device of the vision system for the LCD / PDP monitor frame manufacturing equipment, characterized in that the position is moved together by a slide bar (24) capable of axial movement. The method of claim 7, wherein the drive shaft coupling portion of the slide bar 24 is a product transport of the vision system for LCD / PDP monitor frame manufacturing equipment characterized in that the bearing block 25 is interposed to avoid rotational interference with the shaft. And camera positioning device. The method according to claim 1 or 2, wherein the conveyor parts are supported on the frame and at the same time arranged side by side at a predetermined interval along the side of the conveying belt 14 a plurality of guide rollers 26 for guiding the progress of the product. Product transfer and camera positioning device of the vision system for LCD / PDP monitor frame manufacturing equipment, characterized in that further comprises. The method of claim 1 or 3, wherein the inspection camera (16a, 16b) of the camera part is supported by the holder assembly 28 is coupled to the post block 27 so that the vertical position, front and rear position, angle adjustment is possible. The product transfer and camera position adjusting device of the vision system for LCD / PDP monitor frame manufacturing equipment, characterized in that. The conveyor part according to any one of claims 1 to 3, wherein the conveyor part including the camera part is disposed between the front part product supply part and the rear part product takeout part capable of conveying the product to the conveyor, thereby supplying, inspecting, measuring, and taking out the product. A product transfer and camera positioning device for a vision system for an LCD / PDP monitor frame manufacturing facility, characterized by enabling a continuous process.

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