KR20100121910A - Coating apparatus with guide roller to optimize the height of the dispensing nozzle - Google Patents

Abstract

PURPOSE: A coating apparatus with guide roller to optimize the height of the dispensing nozzle is provided to recompense the planarity of product and task base plane between the surface of product and nozzle. CONSTITUTION: A coating apparatus with guide roller to optimize the height of the dispensing nozzle comprises a main body(10), a head unit(11), a motor(12), a support plate, an up-down cylinder(14), a dispensing nozzle(15), and a guide roller(16). The main body is installed in the linear transfer device. The up-down cylinder drops and raise the support plate.

Description

Coating apparatus with guide roller to optimize the height of the dispensing nozzle}

The present invention relates to a mirror edge coating apparatus, and more particularly to an apparatus for applying an edge coating on the back of the mirror in order to prevent the penetration of moisture to the painted surface for the reflection of the bathroom glass.

In general, a mirror is a tool that reflects the shape of an object by using light reflection, and is made by plating a metal film that reflects light on one surface of the glass.

As the reflective film, a silver plating layer is mainly used. Since silver is easily corroded by moisture, particularly moisture including acidic groups, at least one protective layer is applied to the rear surface of the mirror to which the silver plating layer is applied.

In general, a mirror is sprayed through a nozzle with a solution of silver nitrate and a reducing agent on one surface of a glass disc from which oil is removed using a surfactant to form a silver plated metal layer.

This metal layer is subject to chemical damage, such as physical damage from peeling or scratching from the glass surface and corrosion caused by moisture, especially moisture containing acidic groups.

One or more protective layers of coating compositions are applied to prevent damage to these metal layers.

Conventionally, in consideration of the adhesive force with silver, which is a metal in direct contact with the metal layer, made of a copper metal film, but recently, all of them are made by applying a coating composition without using copper.

As such, the mirror composed of the glass disc, the metal layer, and the protective layer is cut into predetermined dimensions according to the use of the product.

At this time, the metal layer of the cut edge portion (Edge) is exposed to the outside, and when the metal layer is exposed to the outside, the moisture containing the acid group penetrates to corrode the mirror.

To prevent corrosion of the mirror, apply special coating paint along the mirror's edge.

In this case, the coated layer prevents moisture from penetrating the metal layer exposed to the edge from the outside.

Since the coating layer is in contact with the glass plate and the protective layer as well as the metal layer, it should be excellent in adhesion to the metal, glass, and paint, and recently, an automated facility for edge coating of mirrors has been used.

For example, edge coating is applied to the back of the mirror to prevent moisture from penetrating the painted surface for the reflection of the bathroom glass. The base surface for work and the surface of the mirror, which is the workpiece, must be flat or compensated for. To do this, a complex system is required.

However, in the case of conventional facilities, the system is generally managed through process and quality control, such as precise flatness of the working surface (base surface), precise thickness management during product production, and flatness compensation using the Z-axis robot system. Not only is it complicated, but there is a disadvantage in that efficiency is greatly reduced in terms of process or cost since a robot system is applied as a means for flatness compensation.

Accordingly, the present invention has been made in view of the above, by implementing a new type of guide method for accurately guiding the progress of the dispensing nozzle using a resin bearing roller when coating the edge of the mirror, the work base surface And it is possible to easily compensate for the flatness of the product, and to provide a coating apparatus that can simplify the process and reduce the manufacturing cost accordingly.

In order to achieve the above object, the mirror edge coating apparatus provided by the present invention includes a main body installed on the linear transfer mechanism side, a head part which is installed in a rotatable structure at the lower part of the main body, and which can change direction, thereby rotating the head part. The main motor is installed in the lower part of the head, the support plate which descends during operation and rises when not in operation, and the up-down cylinder which raises and lowers the support plate, and is installed vertically on one side of the support plate to apply coating material to the surface of the product. It comprises a dispensing nozzle to be applied, a guide roller which is installed on one side of the support plate and keeps the distance between the nozzle and the product surface while traveling on the surface of the product on one side of the dispensing nozzle, Guide roller on the guide roller So that the can while always maintaining a constant interval to perform the coating operation features.

Here, in the case of the guide roller, it is preferable to be positioned as close as possible to the dispensing nozzle within the range of not impairing the width of the coating film applied to the surface of the product in terms of optimizing the height of the nozzle by the guide roller.

In the case of the main body to which the dispensing nozzle, the guide roller, etc. belong, the combination of the X-axis linear transfer mechanism and the Y-axis linear transfer mechanism, so that the coating work on the four-sided edge portion of the product can be performed sequentially. It is desirable to.

In the mirror edge coating apparatus provided by the present invention, since the coating operation of the dispensing nozzle is performed while being guided by the guide roller that rides on the surface of the product, the work base surface may be maintained evenly between the surface of the product and the nozzle. And the flatness of the product can be easily compensated, and in the end, it is possible to exclude the existing expensive complex system for flatness compensation, thereby simplifying the process and reducing the manufacturing cost.

In addition, since the flatness problem can be solved simply and effectively by the guide method using a guide roller or the like during the mirror edge coating work, the precision flatness of the work base surface, which has been performed for the flatness management as before, when the product is produced Process and quality control items, such as precise thickness control, can be completely eliminated, and the overall operation and management of the system can be effectively performed.

In addition, by performing the coating process by setting the direction or trajectory of the dispensing nozzle using the camera during the mirror edge coating operation, precise coating work is possible on the product, resulting in improved productivity and excellent productivity It has the advantage of producing quality products.

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

1 is a perspective view showing a facility to which the mirror edge coating apparatus according to an embodiment of the present invention belongs.

As shown in FIG. 1, the mirror edge coating apparatus is composed of a system that can easily compensate for the flatness of the work base surface and the product by using a pneumatic cylinder, resin bearing guide roller, etc., dispensing nozzle during coating The guide roller of the guide roller which rides on the surface of the product on one side of the product is used to maintain the constant distance between the product and the nozzle at all times during the work.

Equipment for the mirror edge coating operation is a base 110, on which the product body, such as the movable and fixed fixture 100, bathroom mirror, etc., a plurality of linear transfer mechanism 120 for the movement of the nozzle, the coating work for the product It is made of a structure including a mirror edge coating device 130 to perform.

Therefore, when the product is set on the base 110, the mirror edge coating apparatus 130 performs the coating work on the edge portion of the product while moving in the X-axis and Y-axis directions along the linear transfer mechanism 120 by a predetermined program. can do.

That is, the operation can be performed to apply a coating film to the four surface edge of the product through the nozzle, the operation can be continuously performed by re-injecting after taking out the coating for one product.

2a and 2b is a perspective view showing a mirror edge coating apparatus according to an embodiment of the present invention, Figure 2b shows a state that the head portion is rotated 90 °, Figures 3 and 4 according to an embodiment of the present invention Front and side views showing the mirror edge coating apparatus.

As shown in FIGS. 2A and 2B and FIGS. 3 and 4, a main body 10 supporting the entire head portion 11 is provided while being installed on the linear transport mechanism side of the facility, and the main body 10 at this time is According to the operation of the linear transfer mechanism can be moved together, and thus the nozzle belonging to the head portion 11 is also movable can be a coating work on the product.

A motor 12, which is a driving means for rotating the head portion 11, is vertically installed on an upper portion of the main body 10, and a timing pulley is formed on an axis of the motor 12 and a head portion shaft 23 to be described later. At the same time, the timing belt 24 is connected between the timing pulleys 25 on both sides.

Here, in the case of the timing pulley attached to the motor shaft, it is not seen on the illustrated angle.

Accordingly, when the motor 12 is operated, the shaft 23 of the head portion 11 is rotated by the transmission action of the timing belt 24 connected between both timing pulleys 25, and eventually, the head portion is rotated. Through the rotation operation of (11) it is possible to effectively perform the coating work on the four sides of the product.

The head portion 11 may be rotated at a predetermined angle, and for this purpose, sensing means are provided on the shaft 23 and the main body 10 of the head portion 11, respectively.

For example, one side of the main body 10 is provided with a sensor 20 such as a light detection method, a proximity sensing method, and the like, and a sensor plate 19 having a disc shape on the shaft 23 of the head part 11. ) Is installed concentrically, the edge of the sensor plate 19 is located in the detection area of the sensor 20 at this time.

Accordingly, the sensor plate 19 also rotates when the shaft 23 of the head 11 rotates, and the sensor 20 detects the amount of rotation or the degree of rotation of the rotating sensor plate 19. In this case, since the detection signal of the sensor 20 is provided to the controller (not shown), the head portion 11 may be rotated by a predetermined angle, for example, 90 °.

Here, the method of sensing the amount of rotation or the degree of rotation of the sensor plate is not particularly limited as long as it is commonly known in the art can be adopted.

The head part 11 is a part to which the dispensing nozzle 15, the guide roller 16, etc. belong, and is installed in a structure rotatably supported under the main body 10 by using the shaft 23 of the upper end part. do.

Accordingly, the head portion 11 may be rotated about the axis 23, and eventually the dispensing nozzle 15 or the guide roller 16 may also be rotated together.

The support plate 13 is provided as a means for supporting the guide roller 16 and the dispensing nozzle 15.

The support plate 13 is installed in the form of being connected and supported on the rod side of the up-down cylinder 14 installed on the head portion 11, so that it can move up and down during operation of the up-down cylinder 14 have.

That is, it may be lowered down during the coating operation and may be raised up after the coating operation.

An LN rail 26 is provided on the head 11 side for accurate vertical movement of the support plate 13, and an LM block 27 is provided on the support plate 13 side to slide-bond with the LM rail 26. do.

Accordingly, the support plate 13 can move up and down exactly by the sliding action between the LM block 27 and the LM rail 26.

The dispensing nozzle 15 is a means for applying a coating film to the edge of the product, is installed vertically on the support plate 13 using the nozzle body, the nozzle body is a coating liquid supply line such as a tube extending from the outside ( Not shown) is connected to be able to receive a coating liquid of the appropriate viscosity.

The coating liquid coating method of the dispensing nozzle 15, for example, the method of turning on / off the coating liquid in conjunction with the operation of the facility is not much different from the coating liquid coating method of the conventional nozzle.

In particular, the present invention provides a guide roller 16 for maintaining the distance between the nozzle and the product while contacting the surface of the product during the coating operation of the nozzle as a means for maintaining a constant distance between the product and the nozzle. .

During operation, the nozzle should be kept 0.1 ~ 0.5mm away from the surface of the product. In order to maintain the gap between the product and the nozzle, the resin bearing guide roller is in contact with the surface of the product. Will be maintained.

To this end, the forward and backward cylinders 17 are horizontally installed at the lower end of the support plate 13, and the guide roller block 29 is connected to the rods of the forward and backward cylinders 17 to move back and forth during cylinder operation. A guide roller 16 in the form of an idler that is freely rotatable is installed at the tip end of the guide roller block 29.

Accordingly, the guide roller 16 is lowered together with the support plate 13 by the operation of the up-down cylinder 14 to move the surface of the product while maintaining the gap between the nozzle and the product.

At this time, in order to optimize the height of the nozzle by the guide roller 16, it is preferable to bring the guide roller 16 and the nozzle as close as possible. For this purpose, in the case of the guide roller 16 of the coating film applied to the surface of the product It is provided in the position as close as possible to the dispensing nozzle 15 within the range which does not impair the width.

In addition, the guide roller 16 is able to move the position within a predetermined stroke range by the forward and backward cylinder 17, it is possible to effectively prevent the damage of the coating film worked by the nozzle.

For example, after one edge of one of the four edges of the product, the edge of the other neighboring surface is continuously worked. In the case of the nozzle, one edge of the coating film applied to the edge of one surface is subsequently applied. The coating film is applied to the edge of the guide roller 16, and the guide roller 16 at this time is positioned forward by the forward and backward cylinders 17, that is, further away from the end of the coating film applied to the edge of one surface. As it comes into contact with the surface of the product in the state, the first operation is not to damage the coating film.

On the other hand, the present invention provides a vision method for accurately inducing the path by which the coating film is applied during the coating operation by the dispensing nozzle 15, that is, the path that the nozzle will proceed by photographing with a camera.

To this end, one side of the head portion 11, for example, the vision bracket 30 is installed in front of the position of the dispensing nozzle 15 and the guide roller 16, the vision bracket 30 is installed in this way The vision device 18 is installed in a vertical position.

Accordingly, when the head unit 11 moves, the camera of the vision device 18 photographs an edge line of the product, a reference line on a predetermined base (not shown), and the like, and the captured image signal is provided to the controller side. In addition, the advancing direction of the dispensing nozzle 15 can be accurately guided in a straight line, so that the coating film can be accurately applied to the edge of the product.

Here, a general position control program may be applied to a method in which the control unit controls the position of the nozzle by receiving an image signal input from the vision apparatus.

Of course, in addition to the above functions, the vision device 18 may also perform functions such as photographing the position information at the time of setting the initial position at which the nozzle starts work after the product is set at the base of the facility and providing the information from the controller side. have.

The lighting device 28 is provided as a means for more clearly securing the video signal of the vision device 18.

The lighting device 28 is installed in a structure supported by four lighting supports 31 extending downward from the vision bracket 30, and maintains a constant brightness around the area to be photographed by the vision device 18. It plays a role.

5 is a perspective view showing the installation state of the mirror edge coating apparatus according to an embodiment of the present invention.

As shown in FIG. 5, the mirror edge coating apparatus 130 is a product, that is, the X-axis and Y-axis with the help of a two-axis linear transfer mechanism to collectively perform the coating work on the four-side edge of the mirror It can move in the direction.

For example, the Y-axis linear transfer mechanism 22 is installed long in the front and rear directions of the equipment, and the X-axis linear transfer mechanism 21 is installed in the left and right directions of the equipment on the Y-axis linear transfer mechanism 22 thus installed. At this time, the main body 10 of the mirror edge coating apparatus is installed on the X-axis linear transfer mechanism 21.

Accordingly, the mirror edge coating device 130 is movable in the X-axis and Y-axis by the operation of the X-axis linear transfer mechanism 21 and the Y-axis linear transfer mechanism 22, and the head portion 11 itself. It is possible to change the direction through the rotating structure, and the up and down cylinders can be raised and lowered in the Z-axis direction, so that the coating work on the four side edge portions of the product can be performed sequentially in a batch.

Therefore, the operation of the mirror edge coating apparatus configured as described above is as follows.

6A to 8B are rear and bottom views showing a working state of the mirror edge coating apparatus according to the embodiment of the present invention.

As shown in FIGS. 6A and 6B, the guide roller 16 and the dispensing nozzle 15 are lowered by the operation of the up-down cylinder while the product 140 is set on the base of the facility, and the guide roller at this time 16 is in contact with the surface of the product, the dispensing nozzle 15 is to maintain a certain distance from the surface of the product.

In this state, the entire mirror edge coating apparatus 130 is moved by the operation of the Y-axis linear transfer mechanism, and the dispensing nozzle 15 coats the coating film along the edge of the product.

At this time, since the guide roller 16 proceeds along the surface of the product on one side of the dispensing nozzle 15, the distance between the nozzle and the product can be kept constant.

When the set stroke of the Y-axis linear transfer mechanism is completed, the mirror edge coating apparatus 130 stops operation, and the coating operation on the one side edge portion of the product 140 is completed.

As shown in FIGS. 7A and 7B, once the coating on the one side edge portion of the product 140 is completed, the coating operation on the next one side edge portion adjacent to it is continued. In order to change the head portion of the mirror hedge coating apparatus 130 to 90 degrees.

That is, the head portion 11 is switched by 90 ° by the operation of the motor 12, so that the guide roller 16 and the dispensing nozzle 15 face the one side edge portion to be newly worked. You are ready to go.

In this case, the dispensing nozzle 15 is positioned at the end of the coating film of the one-side edge portion which is worked first, and in the case of the guide roller 16, the dispensing nozzle 15 is moved forward by the operation of the forward and backward cylinder 17 to finish the coating film. It is located in front of it.

As shown in FIGS. 8A and 8B, the entire mirror edge coating apparatus 130 is moved by the operation of the X-axis linear transfer mechanism at the same time as the direction of the mirror edge coating apparatus 13 is changed, and the dispensing nozzle ( 15) coats the coating film along the edge of the product.

Therefore, the coating operation of the edge portions of the remaining two sides of the product can be performed by repeating the operation of the X-axis and Y-axis linear transfer mechanism, the 90 ° direction shifting operation as described above, and finally All coating work can be completed.

As such, the mirror edge coating apparatus of the present invention can maintain a constant distance between the nozzle and the product by using a guide roller in contact with the product at the time of coating, and thus the overall coating work such that the coating work on the product can be made accurately. It is possible to increase the efficiency and to obtain a good coating quality products.

1 is a perspective view showing a facility to which the coating apparatus according to an embodiment of the present invention belongs

Figure 2a, 2b is a perspective view showing a coating apparatus according to an embodiment of the present invention

Figure 3 is a front view showing a coating apparatus according to an embodiment of the present invention

Figure 4 is a side view showing a coating apparatus according to an embodiment of the present invention

5 is a perspective view showing the installation state of the coating apparatus according to an embodiment of the present invention

6A, 6B, 7A, 7B, 8A, and 8B are rear and bottom views showing an operating state of a coating apparatus according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: main body 11: head

12: motor 13: support plate

14: up-down cylinder 15: dispensing nozzle

16: guide roller 17: forward and backward cylinder

18: vision device 19: sensor plate

20: Sensor 21: X axis linear transfer mechanism

22: Y axis linear feed mechanism 23: axis

24: Timing Belt 25: Timing Pulley

26: LM rail 27: LM block

28: lighting device 29: guide roller block

30: vision bracket 31: lighting support

Claims (6)

A main body 10 installed on the linear transport mechanism side; A head part 11 installed in a rotatable structure at a lower part of the main body 10 and capable of changing a direction, and a motor 12 rotating the head part 11; A support plate 13 which is installed at the lower portion of the head portion 11 and descends during work and ascends during work, and an up-down cylinder 14 for raising and lowering the support plate 13; A dispensing nozzle 15 installed vertically on one side of the support plate 13 to apply a coating material to the surface of the product; A guide roller (16) installed at one side of the support plate (13) to keep a distance between the nozzle and the product surface while traveling around the surface of the product on one side of the dispensing nozzle (15); Coating device having a guide roller for optimizing the height of the dispensing nozzle comprising a. The method of claim 1, wherein the guide roller (16) is optimized to the height of the dispensing nozzle, characterized in that the position can be moved by the forward and backward cylinder 17 to prevent damage to the coating film worked by the nozzle. Coating device with a guide roller for. The dispensing nozzle of claim 1 or 2, wherein the guide roller 16 is positioned as close as possible to the dispensing nozzle 15 within a range that does not impair the width of the coating film applied to the surface of the product. Coating device with guide roller for optimizing the height. The vision device 18 of claim 1, wherein the vision device 18 is installed vertically on one side of the head part 11 and accurately guides the moving direction of the dispensing nozzle 15 in a manner of photographing the path of the dispensing nozzle 15. Coating device having a guide roller for optimizing the height of the dispensing nozzle, characterized in that it further comprises. The method according to claim 1, wherein the head portion 11 is sensing between the sensor plate 19 is installed on the center of rotation axis and the sensor 20 is installed on the main body 10 side to sense the rotation amount of the sensor plate 19 A coating apparatus with a guide roller for optimizing the height of the dispensing nozzle, characterized in that it is possible to change the direction by 90 ° by the action. The main body 10, to which the dispensing nozzle 15 and the guide roller 16 belong, is supported by the X-axis linear transfer mechanism 21 and the Y-axis linear transfer mechanism 22. Coating device having a guide roller for optimizing the height of the dispensing nozzle, characterized in that the coating operation for the surface edge portion can be performed sequentially in a batch.

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