JPH0512072U - Glass plate corner grinding device - Google Patents

Abstract

(57) [Summary] [Object] To provide an apparatus capable of standing up the corners of a square glass plate and standing upright and continuously grinding the chamfering process of the lower edge of a straight edge. [Composition] A grinding wheel which stands on the end of a carry-out conveyor and abuts on the lower side edge of an upright glass plate and rotates in the transport direction; and a lower side of the glass plate which is detached from the corner of the glass plate. And a rotating means for further lowering.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass plate chamfering device, and more particularly to a device for grinding a corner portion of a rectangular glass plate.

[0002]

[Prior Art]

 As the chamfering of a rectangular glass plate, there is one that grinds straight edges of each side, for example, a vertical chamfering machine disclosed in Japanese Utility Model Laid-Open No. 61-20255, while a chamfered part of the four corners of the glass plate, That is, the corners that are easily cut during manual work and are dangerous to handle are ground, and the glass plate is ground as disclosed in Japanese Patent Publication No. 58-58189 filed by the applicant of the present application. A grinding head having a rotary grinding member and a drive mechanism therefor, a rotary shaft for swinging the grinding head, and a sleeve configured to be rotatable by itself, the sleeve having the rotary shaft. A corner chamfering device for a glass plate rotatably supported at a position eccentric to the rotation axis of the sleeve itself is provided.

Further, in Japanese Utility Model Laid-Open No. 60-142058, a plate glass upper and lower surface sandwiching and conveying conveyor is provided in a machine frame, and a pair of horizontal rotary grindstones are provided on both sides of the lathe at symmetrical positions on both outer sides of the conveyor. There is disclosed a plate glass square surface high-speed polishing machine in which a central portion of the lever is reciprocally rotatable about an upright shaft and a drive cylinder is connected to the lever.

[0004]

[Problems to be solved by the device]

 The chamfering of the four corners of a square glass plate is performed by the corner chamfering device disclosed in Japanese Patent Publication No. 58-58189 or Japanese Utility Model Laid-Open No. 60-142058. When chamfering a straight edge with a vertical chamfering machine, etc., and then chamfering the corners, the processing posture of the workpiece is different, so the glass plate should be swung each time to adjust the posture or manually. It was one of the separate grinding steps, which was inefficient and very dangerous in handling large plates, which was a problem.

[0005]

[Means for solving problems]

 The present invention has been made in view of the above problems, and is intended to provide a device capable of performing a series of processing by incorporating a chamfer of a corner into a vertical chamfering process for processing each side of a glass plate. A chamfered square glass is erected and placed at the end of the carry-out conveyor that stands upright, and a grinding wheel that comes into contact with the lower corner of the glass plate is placed above the rotatable circumferential end surface. A holder for holding a motor that is directly connected to the grinding wheel at a position, a crankshaft that is fixed to the holder so as to be suspended from and parallel to the axis of the motor, and fixed to one end of the crankshaft that is axially supported by a bearing stand. Provided is a glass plate corner portion grinding device including a cylinder connected to an arm end for rotating the crankshaft.

[0006]

[Action]

 The rotating grinding wheel that abuts the lower corner of the vertical glass plate is chamfered at the required corner, and then the cylinder operates to rotate the crankshaft, and the holder and motor are fixed to the crankshaft. Although the grinding wheel also rotates via the wheel, the locus of the grinding wheel rotates around the crankshaft, and after chamfering the corners, the position of the grinding wheel lowers and allows the glass plate to pass through. The lower side of the plate and the corners of the glass plate are ground in a series of steps.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an assembled perspective view of an essential part of the present invention, and FIG. 2 shows a side view for explaining a schematic arrangement of the present grinding apparatus and an operation of the essential part.

[0008] The end of a carry-out conveyor 5 connected to a vertical chamfering machine 4 composed of a sandwiching conveyor 2 for sandwiching and transporting the glass plate 1 and a plurality of grinding wheels 3 arranged below the sandwiching conveyor. Further, a corner grinding device 6 for grinding the corners of the glass plate 1 is provided.

The corner grinding device is mounted on a spindle motor 7 at a position where the lower side corner of the glass plate 1 in a standing upright state is projected by the carry-out conveyor 5, and is rotated to rotate the glass plate 1 above the circumferential end surface. A grinding wheel 8 with which the corners of the shaft abut is disposed, the motor is fixedly held by a holder 11, and the holder is mounted on a base (not shown). An arm 12 is fixed to one end of the freely rotatable crankshaft 10, and a sliding portion of a cylinder 13 tiltably suspended on a frame (not shown) integral with the base is attached to the arm end, that is, The piston is rotatably connected with a pin joint, and the cylinder is operated by a rotary sensor 14 and a return sensor 15 arranged on the upper side surface of the carry-out conveyor 5.

As shown in FIG. 2, the set positions of the grinding wheel 8 and the crankshaft 10 are set with respect to a vertical line between the axis of the grinding wheel 8 and the axis of the crankshaft 10 depending from the axis. The angle θ between the lower side corner of the glass plate 1 and the center line connecting the axis of the grinding wheel 8 is set to about 45 °, and a free roll 16 is appropriately arranged between the carry-out conveyor 5 and the grinding wheel 8. The lower side of 1 is supported and its height position is made constant.

The glass plate 1 being processed by the vertical chamfering machine 4 and the glass plate 1 on the carry-out conveyor 5 move while tilting slightly by supporting to support the glass plate surface. The corner grinding device 6 for grinding the corners of the plate 1 may also be tilted in accordance with the inclination of the glass plate 1 (not shown), and the base can be slid to the free roll 16 side. If provided, movement adjustment can be performed in response to wear of the grinding wheel 8.

The operation of the present invention will be described below. The moving glass plate 1 which moves the lower straight edge of the glass plate 1 by the sandwiching conveyor 2 and is chamfered by the grinding wheel 3 projects from the carry-out conveyor 5 and the free roll 16 so that the lower corners of the glass plate 1 While contacting with the upper part of the peripheral end surface of the rotating grinding wheel 8 and continuing the conveying movement to grind a corner portion, when a predetermined amount is ground, that is, when the glass plate 1 is transferred to a predetermined position, the vertical side in front of the glass plate 1 is moved. Is detected by the rotation sensor 14, and the cylinder 13 is activated by the detection signal, the crankshaft 10 pivotally supported by the bearing bases 9 and 9 rotates through the arm 12 and is fixed to the crankshaft 10. The grinding wheel 8 mounted on the shaft end of the motor 7 fixed to the holder is rotated around the crankshaft 10 as the motor 7 rotates, and the grinding wheel 8 is rotated at the corner of the glass plate 1. Fig. 2 from the section Leaving to the position of the broken line.

After the grinding wheel 8 is detached, if the glass plate 1 passes over the corner grinding device 6 and moves to a conveyor (not shown), the backward movement sensor 15 detects the rear side edge and the detection is performed. A signal is transmitted to a cylinder 13 via a control system (not shown), and the cylinder is returned and the lowered grinding wheel 8 returns to a position where it comes into contact with the corner of the next moving glass plate and stands by.

The amount of grinding for grinding the corners of the glass plate 1 is to determine the descending timing of the grinding wheel 8 by moving the mounting position of the rotation sensor 14 back and forth to determine the size of the grinding amount. is there.

[0015]

[Effect of the device]

 INDUSTRIAL APPLICABILITY The present invention makes it possible to stably grind the corners of a glass plate in the chamfering process of the straight edge of the glass plate, the labor of handling the glass plate is saved, and the dangerous work of the large plate is eliminated. The effect is extremely remarkable.

[Brief description of drawings]

FIG. 1 is a perspective view showing the assembly of essential parts of the present invention.

FIG. 2 is a schematic side view illustrating a schematic arrangement of the present grinding device and an operation of a main part.

[Explanation of symbols]

1 ... Glass plate 5 ... Carry-out conveyor 6
..Corner part grinding device 7 ... Motor 8 ... Grinding wheel 9
..Bearing base 10 ... Crankshaft 11 ... Holder 12
..Arms 13..Cylinders

Claims (1)

[Scope of utility model registration request] 1. A grinding wheel for contacting a corner of a lower side of the glass plate is provided at an upper end of a rotatable circumferential end surface at the end of a carry-out conveyer which stands up and transports a rectangular glass whose lower side is chamfered. A holder for holding a motor that is directly connected to the grinding wheel at its abutting position, a crankshaft that is fixedly attached to the holder in parallel with and suspended from the axis of the motor, and one end of the crankshaft that is axially supported by a bearing stand. An apparatus for grinding a corner portion of a glass plate, which comprises a cylinder which is connected to an end of an arm fixedly attached to the cylinder and rotates the crankshaft.