JP5139771B2 - Glass plate cutting edge shaping device - Google Patents

Description

  The present invention relates to a cleaving edge shaping device arranged next to a cleaving device (a device for cleaving and cutting a glass plate) in a glass plate processing line, and sharp edges generated by cleaving are formed by shaping or rounding. The present invention relates to a shaping device.

  A glass plate used as a substrate for a display is generally cut to a predetermined size by cleaving called a scribe break. Since a sharp ridge line is formed on the cleaved edge generated by cleaving, it is called a cleaved edge shaping device (hereinafter, “chamfering machine”) that chamfers or rounds the ridge line. ) Is arranged next to the cleaving device.

  A glass plate chamfering machine is a device that chamfers or rounds a sharp ridgeline or corner generated at the edge of a glass plate cut by cleaving or the like with a tool (generally a grindstone). As shown in FIG. 5, this general type of chamfering machine includes a surface plate 1 that adsorbs the glass plate 4 with negative pressure, and a rotating grindstone 2 disposed on both sides of the surface plate. The surface plate 1 can be turned 90 degrees around the vertical axis by the turning device 13, and the surface plate 1 and the rotating grindstone 2 can be relatively moved in a predetermined moving direction. The rotating grindstone 2 is provided in the vertical direction and the width direction (the thickness direction of the glass plate and the fixed direction) on each of the left and right columns (columns) of the gate-shaped frame or the two columns individually provided on both outer sides of the surface plate 1. It is provided so that it can be moved and positioned in the direction perpendicular to the board feed).

  The glass plate (usually the glass plate after the display device is mounted) 4 that has been cleaved by the cleaving device is carried into a chamfering machine by a conveyor (not shown). The chamfering machine fixes the cut edge 41 by fixing the loaded glass plate 4 on the surface plate 1 and moving the surface plate 1 with the rotating grindstone 2 in contact with the cut edge 41 of the glass plate. Processing.

  Water (pure water) is used as a grinding liquid in the case of shaping processing (grinding) of a cleaved edge with a rotating grindstone. Further, when the glass plate moves on the surface plate, it becomes impossible to shape it into an accurate shape. Therefore, the glass plate 4 to be processed is adsorbed and fixed to the upper surface of the surface plate 1 with a negative pressure. In addition, a buffer layer is provided on the surface of the surface plate 1 by attaching a relatively soft synthetic resin sheet in order to prevent the glass plate from being damaged.

  The glass plate to be shaped is carried from the cleaving device to the chamfering machine. The loaded glass plate is fixed in close contact with the surface of the platen by negative pressure acting on a number of suction holes provided on the surface of the platen. If the glass plate does not adhere to the surface of the platen, air will flow into the adsorption holes from between the glass plate and the surface plate, so the negative pressure of the adsorption holes will not increase (the degree of vacuum will be low) Fixing is incomplete.

  On the other hand, when the glass plate is cleaved, small glass fragments called cullet are generated when the surface of the glass plate is scratched with a scribe cutter or when the glass plate is broken along the scratch. This cullet is carried into the chamfering machine in a state of being attached to the front and back surfaces of the glass plate. When a large number of cullets are interposed between the glass plate and the surface of the surface plate, the glass plate cannot be brought into close contact with the surface of the surface plate, the negative pressure of the suction holes does not increase, and the glass plate is not completely fixed.

  For this reason, conventionally, a cleaning process is provided in which an operator cleans the surface of the surface plate by flowing water over the surface of the surface plate without placing a glass plate on the surface plate every time a predetermined number of processes are performed.

  However, this method requires that the cutting operation of the cutting edge must be temporarily interrupted to clean the surface plate, and requires manual labor for each cleaning, improving productivity and saving labor. There was a problem that it was hindered.

  The object of the present invention is to improve the operating rate of the apparatus and save labor by automating the cleaning operation of the surface plate surface in the glass plate chamfering machine. The cullet on the surface plate is placed on the surface plate surface. It is an object of the present invention to obtain a glass plate cutting edge shaping device provided with a surface plate cleaning device capable of automatic cleaning in a short time without damaging the resin sheet or resin coating layer attached.

  A cutting edge shaping device for a hard and brittle plate according to the invention of the present application is provided adjacent to a glass plate processing region where a rotating grindstone 2 is arranged, and a brush 26 that moves up and down above the surface plate 1 and the friction of this brush. Water supply means 24 for supplying cleaning water to the position and air injection means 25 for blowing an air flow onto the surface of the surface plate 1 are provided. When the platen 1 returns from the delivery position 48 where the processed glass plate is sent to the next process, the brush 26 is lowered in the presence of cleaning water and an air jet to rub the surface of the platen. The board surface is automatically cleaned.

A hard brittle plate cutting edge shaping device according to the invention of claim 1 of the present application is a surface plate 1 for holding a glass plate and a rotating grindstone disposed on both sides of the surface plate width direction orthogonal to the processing movement direction of the surface plate. 2, a glass plate cleaving edge shaping device including the base 3 mounted with the surface plate and reciprocatingly moved in the processing movement direction, and a surface plate cleaning device 20 . The surface plate cleaning apparatus 20 is directed to a cleaning brush 26 extending in the width direction of the surface plate, a water supply pipe 24 for supplying cleaning water along the cleaning brush, and the surface of the surface plate along the cleaning brush. and an air injection pipe 25 for generating a film-like air flow, the cleaning brushes, cleaning brushes tip that is vertically movably mounted at a height rubs the surface of the surface plate to move when lowered.

The cleaning brushes 26 in the cleaving edge shaping device of the present invention are provided in two rows , the water supply pipe 24 is disposed between the two rows of cleaning brushes, and the air injection tube 25 is one of the two rows of cleaning brushes. It is arranged on the anti-water supply pipe side.

  In the cleaving edge shaping device provided with the cover 6b covering the glass plate processing region where the rotating grindstone 2 is arranged, the brush 26, the water supply pipe 24, and the lower edge along the shaped glass plate delivery side of the cover. It is practical to arrange the air injection tube 25.

In the chamfering machine which is the most general cutting edge shaping device, as shown in FIGS. 4 and 5, the surface plate 1 to which the glass plate 4 is fixed moves relative to the rotating grindstone 2 to perform shaping. The chamfering machine is located downstream of the cleaving machine (downstream of the glass plate in the processing line), shaping the cleaved edge of the glass sheet carried from the cleaving machine, Send to the next process device. The surface plate 1 of the chamfering machine reciprocates between the carry-in position 47 for receiving the glass plate and the sending position 48 for sending the glass plate with an operation of turning 90 degrees in the middle of the reciprocation. The glass plate is trimmed with a rotating grindstone while the surface plate reciprocates between these two positions. The glass plate that has been subjected to the shaping process is transferred to the next process apparatus at the substrate dispensing position.

  In this invention, the cleaning brush 26 provided with the water supply pipe 24 can be raised and lowered freely on the sending side of the shaped glass plate in the processing area of the chamfering machine, that is, in the area where the rotating grindstone 2 for chamfering is arranged. Provided.

  The cleaning brush 26 descends when the surface plate 1 moves to the sending position 48 of the shaped glass plate, and sends the shaped glass plate to the loading position 47 so that the surface plate 1 receives the next glass plate. Clean the surface of the platen while moving. The cleaning is performed by the cleaning brush 26 rubbing the surface of the surface plate using the moving operation of the surface plate 1 while flowing the cleaning water from the water supply pipe 24. At this time, air is ejected from the slit 28 of the air injection pipe 25 into a film shape, and the cullet and cleaning water captured by the cleaning brush 26 are pushed downstream in the moving direction of the surface plate during the surface plate cleaning, No cleaning water or cullet is left on the surface of the surface plate that returns to 47.

  The cleaning of the surface of the surface plate may be performed every time one glass plate is processed, but may be performed once for each processing of a plurality of sheets. Since it is preferable that the surface of the platen is not rubbed as much as possible, it is preferable that the number of washings be performed as much as possible. If rubbing is performed in a state in which the cleaning water does not flow out, the resin film on the surface of the surface plate is damaged, so it is essential to supply the cleaning water during cleaning. Further, since the surface of the surface plate is wetted by the water used as the processing liquid during the shaping process, the cullet attached to the surface of the surface plate cannot be removed only by non-contact air injection. If necessary, the platen 1 can be reciprocated while the cleaning brush 26 is lowered to perform reciprocal cleaning in which the cleaning brush 26 is slid or forward and reverse. When the cleaning is completed, the surface plate 1 moves to the carry-in position 47, and the cleaning brush 26 moves up to complete one cleaning operation.

In the cutting edge shaping device of the present invention, after the glass plate is sent to the next process, the cleaning brush 26 is lowered, and the surface plate 1 is moved to the next glass plate carry-in position 47 and at the same time the surface of the surface plate is cleaned. . Accordingly, the cleaning is performed automatically and the cleaning can be performed without stopping the apparatus.

  That is, in the cleaving edge shaping device of the present invention, the surface plate is washed during automatic operation, so that productivity is improved. There is no need to shut down the device for cleaning. In addition, stable cleaning of the surface plate in a short time is achieved by rubbing the surface of the surface plate with the cleaning brush, washing away the cullet and dust with the cleaning water, and flushing the cullet and cleaning water with the film-like air flow. Caret removal is possible.

  A preferred embodiment of a glass plate chamfering machine according to the present invention will be described below with reference to the drawings.

  FIG. 5 is a perspective view showing an example of a glass plate chamfering machine. In the figure, 1 is a surface plate on which a glass plate to be processed is placed, Z is a moving direction of the surface plate 1, and 2 is arranged on both outer sides of the width direction X (direction perpendicular to the moving direction Z) of the surface plate 1. The rotating whetstones X and Y indicate the moving direction of the rotating whetstone 2 in the surface plate width direction and the height direction. 3 is a base of the surface plate 1 and moves along the feed guide 33 in the Z direction. Reference numeral 4 denotes a glass plate adsorbed and fixed on the surface plate 1.

  The surface plate 1 is formed by a circular central plate 11 and two rectangular side plates 12 provided with a semicircular cutout for accommodating the central plate 11 at the center of the inner side. The central plate 11 is mounted on the base 3 via a turning device 13. The side plates 12 move symmetrically across the central plate 11 along the guide 34 in the surface plate width direction (X direction) provided on the base 3. By moving the side plates 12 on both sides in a direction away from each other, the substantial support area of the surface plate 1 is expanded.

  The rotating grindstones 2 on both sides are mounted on column portions on both sides of a portal frame (not shown) provided so as to straddle the surface plate 1 via a width direction moving table and a lifting table. Although not shown in the drawing, the position in the moving direction of the surface plate 1 and the height and width direction of the rotating grindstone 2 are set by feed screws in respective directions that are rotationally driven by a servo motor. ing. The controller controls the position of the base 3 in the moving direction (Z direction) and the height of the rotating grindstone 2 (Y direction) and the position of the surface plate width direction (X direction).

  FIG. 1 is an external view showing a state in which a cover is attached to the chamfering machine having the above structure. The cover includes a lower cover 6a whose upper surface surrounding the moving area of the surface plate 1 is opened, an upper cover 6b whose lower surface covering the processing area including the rotary grindstone 2 and a gate-shaped frame (not shown) on which the rotating grindstone 2 is mounted, and The upper cover 6b is composed of side covers 6c having inner surfaces located on both sides. The upper edge of the lower cover 6a is located slightly higher than the upper surface of the surface plate, and the openings of the upper cover 6b in the front and rear direction of the surface plate serve as the glass plate inlet / outlet 7 and the outlet 8 to the upper surface of the surface plate. Yes. On the outer surface of the side cover 6c, a door 9c for maintenance and inspection of the rotary grindstone 2 and its driving device is provided. Further, the upper cover 6b is provided with an opening / closing part 9b for maintenance and inspection such as a camera for detecting the position of a glass plate provided in the beam portion of the portal frame.

  The surface plate cleaning device 20 is disposed along the lower edge of the upper cover 6b on the workpiece delivery port 8 side, and both ends of the platen cleaning device 20 are left and right ends of the lower edge portion of the upper cover 6b via an elevating device (air cylinder with guide) 21. It is fixed to.

  2 and 3 are a partially enlarged perspective view and a sectional view of the surface plate cleaning apparatus. The surface plate cleaning device 20 shown in the figure has a water supply pipe 24, an air injection pipe 25, and two cleanings that extend in the width direction of the chamfering machine along a support bar 23 that is fixed to the lifting bracket 22 of the lifting apparatus 21 at both ends. A brush 26 is provided. The water supply pipe 24 is fixed to the support bar 23 and includes a plurality of nozzle holes 27 facing downward at predetermined intervals in the longitudinal direction. Reference numeral 29 denotes a nipple of a water pipe (not shown) for supplying cleaning water to the water supply pipe 24.

  Two studs 35 are planted on the side of the support bar 23 on the side opposite to the water supply pipe with a space left and right, and a nut 36 with a knurled knob is screwed onto the stud. ing. The two cleaning brushes 26 are attached to the lower surface of a support plate 37 having a U-shaped cross section by bonding the base ends (upper ends) thereof. The support plate 37 is provided with a handle 38 for attaching and detaching and a hole through which the stud 35 is inserted. The two cleaning brushes 26 can be removed by removing the nut 36 with the knob and extracting the support plate 37 from the stud 35.

  The support plate 37 has an opening communicating with the nozzle hole 27 of the water supply pipe, and the cleaning water flowing out from the nozzle hole 27 is supplied between the two cleaning brushes 26 and 26. The air injection pipe 25 is a square pipe and is provided with both ends fixed to the upper edge of the lower cover 6a by brackets 39 fixed to both ends thereof. That is, the air injection tube 25 is separated from the support bar 23 that moves up and down and does not move up and down. The air injection tube 25 is a square pipe, and a slit 28 is opened along a ridge line facing downward, and air is ejected in a film shape downward.

  The air injection pipe 25 is provided on the counterfeed outlet side of the cleaning brush 26 and the water supply pipe 24. When the surface plate 1 moves in the return direction from the delivery position 48 to the carry-in position 47, the air injection pipe 25 The ejected film-like air flow collides with the surface of the surface plate and pushes the cleaning water supplied from the water supply pipe 24 and the cullet captured by the cleaning brush 26 toward the delivery port side, that is, the counter machining area side. It flows like.

  In other words, the surface plate cleaning device of the present invention is configured to slidably contact the surface of the surface plate without damaging the resin layer on the surface of the surface by sliding the surface plate 1 with the cleaning brush 26 while supplying cleaning water. The cullet attached to the surface can be reliably captured. Then, the cleaning water and the cullet are pushed to the counter machining area side by the air flow ejected in a film form from the air jet pipe 25 provided close to the counter feed outlet side of the water supply pipe 24 and the cleaning brush 26. By the action, the surface of the surface plate can be reliably cleaned. That is, in the cleaving edge shaping device of the present invention, the surface plate can be cleaned automatically and efficiently using the return operation of the surface plate, so that the surface plate is automatically cleaned. At the same time, cleaning can be performed without stopping the apparatus.

The perspective view which shows the external appearance of the chamfering machine of an Example. The partial expansion perspective view of the surface plate washing apparatus provided in the chamfering machine of FIG. Cross-sectional view of the surface plate cleaning device of FIG. Schematic side view of the cutting edge shaping device of the present invention Perspective view showing an example of internal structure of chamfering machine

Explanation of symbols

1 Surface plate 2 Rotating whetstone 3 Base 4 Glass plate
6b Top cover
20 Surface plate cleaning device
24 Water supply pipe
25 Air injection pipe
26 Cleaning brush

Claims (2)

A surface plate (1) holding a glass plate, a rotating grindstone (2) disposed on both sides of the surface width direction perpendicular to the processing movement direction of the surface plate, and mounting the surface plate in the processing movement direction. A glass plate cleaving edge shaping device having a reciprocating base (3), comprising a surface plate cleaning device (20), the surface plate cleaning device comprising two rows extending in the width direction of the surface plate . A cleaning brush (26), a water supply pipe (24) that is disposed between the two rows of cleaning brushes and supplies cleaning water along these cleaning brushes, and one anti-water of the two rows of cleaning brushes An air injection pipe (25) that is disposed on the supply pipe side and generates a film-like air flow toward the surface of the platen along the cleaning brush, and the cleaning brush has a cleaning brush tip when lowered. A device for shaping a cleaved edge of a hard brittle plate, which is mounted so as to be movable up and down to a height at which the surface of a moving surface plate is rubbed. A cover (6b) is provided that covers a region where the lower surface is opened and the rotating grindstone is disposed, and the brush (26) and the water supply pipe (24) are arranged along the lower edge of the shaped glass plate sending side of the cover. The cutting edge shaping device according to claim 1, wherein an air jet pipe (25) is arranged .

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