JPH04240130A - Methoed and device for cutting sheet glass - Google Patents

Abstract

PURPOSE:To automate the cutting of sheet glass having a specific thickness. CONSTITUTION:A pressing means 14 which can make into surface contact with one surface of the sheet glass 20 and can bend the sheet glass at its central position, a pair of sucking means 16 which are provided to face the pressing means 14, are disposed on both sides of the cutting line position of the other surface of the sheet glass 20 and sucks the sheet glass 20 on both sides of the cutting line, and means 18 which are provided on the sucking means 16 and part a pair of the sucking means 16 from each other are provided. While the sheet glass 20 is held crimped by the pressing means 14 and the sucking means 16, the sheet glass is bent and cut. The sucking means 16 are then parted from each other to part the cut surfaces of the sheet glass 20 from each other.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for cutting a glass plate, in which a cut line is made in the glass plate using a cutter, and then the glass plate is folded and cut along the cut line.

0002

[Background Art] Conventionally, when cutting a glass plate with a thickness of 6 mm or more, which is called a special thick plate, the glass plate is first placed on the table of a glass plate cutting machine, and a cutting line is made with a cutter at the desired cutting position on the glass plate. Next, the worker uses a hammer along the cut line of the sheet glass to fold the sheet glass along the cut line with his or her hands, and then cuts the sheet glass along the cut line.

0003

[Problems to be Solved by the Invention] However, when folding extra-thick glass plates by hand, there is a problem in that a skilled worker is required to obtain a good fold. Furthermore, since productivity is low, there is a problem that cost reduction cannot be achieved. Furthermore, conventional cutting operations rely on skilled workers and cannot be automated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for cutting sheet glass that does not require skilled workers and can further reduce costs and achieve automation. purpose.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a method for cutting a glass plate by folding and cutting a glass plate having a cut line along the cut line. Align the bent portion of the pressing means with the cutting line position and abut the pressing means on both sides of the cutting line position, and also contact a pair of suction means on both sides of the cutting line position on the other surface of the sheet glass, and the suction means The sheet glass on both sides of the cutting line position is sucked, and the sheet glass is held between the pressing means and the suction means, and the pressing means is pushed up and bent to cut the glass sheet, and the cut surface of the glass sheet is cut by the pair of suction means. It is characterized by separating them from each other.

[0006]

[Operation] According to the present invention, a bendable pressing means is brought into contact with both sides of the cutting line on one side of the sheet glass, and a pair of bendable suction means are brought into contact with both sides of the cutting line on the other side of the sheet glass. The sheet glass on both sides of the cutting line is adsorbed using the adsorption means. After the suction is completed, the sheet glass is pressed by the pressing means and the suction means, the pressing means is bent and the sheet glass is cut, and at this time the pair of suction means are separated from each other.

[0007] Therefore, by controlling the force and speed of pressing and separating, it is possible to separate the cut surfaces when cutting sheet glass, thereby preventing the cut surfaces from coming into contact with each other, and obtaining a good fold. be able to.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A method and apparatus for cutting sheet glass according to the present invention will be described in detail below with reference to the accompanying drawings. As shown in FIG. 1, a sheet glass cutting apparatus 10 is comprised of an apparatus main body 12, a pressing means 14, an adsorption means 16, and a separating means 18.

The main body 12 of the apparatus is erected on the side of a conveyance line for sheet glass 20 conveyed in the direction of arrow A in FIG.
This main body 12 is provided with a support stand 22 below a glass plate 20, and a pair of support frames 24, 24 above the glass plate 20. A screw jack box 26 constituting the pressing means 14 is fixed on the support base 22, and a shaft 2 is attached to the screw jack box 26 in the vertical direction.
8 (see FIG. 2) is slidably provided. This shaft 28 is connected to a coupling 30 and a servo motor 32 shown in FIG. 2 via a worm gear mechanism within the screw jack box 26.

[0010] Also, a plate 3 is attached to the upper end of the shaft 28.
4 is pivotally supported, and sliding shafts 36, 36 are supported on the plate 34 via pins 38, 38. The shafts 36, 36 are slidably provided on the support plate 22. Therefore, the plate 34 can be raised and lowered. Support plates 40, 40 are erected on the upper surface of the plate 34, and pins 42 are provided on the support plates 40, 40. The opposing sides (inner sides) of press plates 44 and 44 are rotatably supported by the pin 42.
Pads 46, 46 are attached to the upper surfaces of 4, 44. Air cylinders 48, 48 are pivotally supported on the outside of the pressing plates 44, 44 via pins 47, 47 (FIGS. 3 to 5). Air cylinders 48, 48 are connected to pins 50, 5
It is rotatably supported by brackets 52, 52 via 0. Brackets 52, 52 are secured to plate 34. A relief valve (not shown) is set in the air cylinders 48, 48 so that the air cylinders 48, 48 are contracted by a predetermined pressing force.

Further, shafts 54A, 54A and shafts 54B, 5 are provided in the horizontal direction between the support frames 24, 24 of the main body 12.
4B is provided. A plate 58 is connected to the shafts 54A, 54A via linear bearings 56A, 56A...
A, 58A are provided, and the shafts 54B, 54B are provided with plates 5 via linear bearings 56B, 56B...
8B and 58B are provided.

Air cylinders 60A, 60A are provided on the plates 58A, 58A perpendicular to the surfaces of the plates 58A, 58A, and air cylinders 60B, 60B are provided on the plates 58B, 58B, perpendicular to the surfaces of the plates 58B, 58B. It is provided. This air cylinder 60
Pressing plates 62A, 62B are provided in parallel at the rod ends of the air cylinders A, 60B and the air cylinders 60A, 60B. Suction pads 64A are attached to the pressure plates 62A and 62B.
, 64B are provided, and holes (not shown) for sucking air are formed in the entire bottom surface of the suction pads 64A, 64B. A suction means (not shown) is communicated with the suction pads 64A and 64B. Therefore, the suction pads 64A, 6
4B can adsorb the sheet glass 20.

Further, blocks 66A, 66B are fixed to the upper surfaces of the pressing plates 62A, 62B.
Air cylinder 70 is connected to 6B via pins 68A and 68B.
is rotatably supported. Therefore, the air cylinder 70
When activated, the spacing between the suction pads 64A and 64B can be increased. FIGS. 3 to 5 show the operation of the sheet glass cutting device according to the present invention constructed as described above.
This will be explained based on the diagram.

First, a cutting line 20A is processed on the glass plate 20 in the previous step, and this glass plate 20 is conveyed. When the cutting line 20A of the glass plate 20 is located between the pads 46 and 46, the servo motor 32 is driven to raise the shaft 28. Pad 46
, 46 are brought into contact with both sides of the lower surface of the cutting line 20A of the glass plate 20. At the same time, air cylinders 60A, 60 above the glass plate 20
A and the air cylinders 60B, 60B are extended to lower the suction pads 64A, 64B, and the suction pads 64A, 64B are removed.
are brought into contact with both sides of the cutting line 20A of the glass plate 20. As a result, both sides of the cutting line 20A on the upper and lower surfaces of the glass plate 20 are held.

Next, the suction means is activated to remove the suction pad 64A.
, 64B to suck both sides of the cut line 20A of the glass plate 20. Next, the servo motor 32 is operated to press the lower surface of the glass plate 20 with the pads 46, 46, and the air cylinder 60 is pressed.
A, 60A and air cylinders 60B, 60B are operated to press the upper surface of the glass plate 20 with the suction pads 64A, 64B.

When this pressing force exceeds the set pressure of the relief valves provided in the air cylinders 48, 48, the air cylinders 48, 48 contract. Therefore, the pads 46, 46 and suction pads 64A, 64B are bent as shown in FIG. Therefore, the sheet glass 20 is cut along the cutting line 20A. On the other hand, the servo motor 32 and air cylinders 60A, 60
A, 60B, 60B and air cylinder 70
Activate and extend. As a result, the suction pads 64A, 6
4B moves in the direction away from the suction pad 64A,
The folded glass plate 20 also moves together with 64B. Therefore, the cut surfaces of the glass plate 20 are separated from each other and do not come into contact with each other.

[0017]

As described above, according to the sheet glass cutting method and apparatus according to the present invention, when folding sheet glass using the pressing means and suction means, the force and speed of pressing and suction can be controlled, and the suction means can be separated from each other. Since it can be pulled apart, the cut surfaces can be separated when cutting sheet glass. Accordingly, it is possible to prevent the cut surfaces of the sheet glass from coming into contact with each other, so that a good folding edge can be obtained.

Furthermore, since the sheet glass can be cut automatically, it is possible to save labor, improve productivity, and reduce costs.

[Brief explanation of the drawing]

[Fig. 1] Perspective view of a plate glass cutting device

[Fig. 2] Side view of the pressing means used in the cutting device

FIG. 3 is a side view showing the operating state of the sheet glass cutting device.

FIG. 4 is a side view showing the operating state of the sheet glass cutting device.

FIG. 5 is a side view showing the operating state of the sheet glass cutting device.

[Explanation of symbols]

10 Sheet glass cutting device 12 Main body 14 Pressing means 16 Adsorption means 18 Separation means 20 Sheet glass 20A cutting line 44, 62A, 62B Press plate 46 Pad 48 Air cylinder 64A, 64B Suction pad 70...Air cylinder

Claims (2)

[Claims] 1. In a method of cutting a glass plate by folding and cutting a glass plate having a cut line along the cut line, the bending portion of a pressing means is aligned with the cut line position on one side of the glass plate, Pressing means are brought into contact with both sides, and a pair of suction means are brought into contact with both sides of the cut line position on the other surface of the sheet glass, the sheet glass on both sides of the cut line position is suctioned by the suction means, and the pressing means and suction are brought into contact with each other. A method for cutting a glass plate, characterized by cutting the glass plate by bending it while pushing up the pressing means while holding the glass plate between the means, and separating the cut surfaces of the cut glass plate by a pair of suction means. 2. A glass plate cutting device for cutting a glass plate with a cut line by folding it along the cut line, comprising: a pressing means that is capable of making surface contact with one surface of the glass plate and capable of bending at a central position; a pair of suction means provided opposite to the pressing means and disposed on both sides of the cutting line position on the other surface of the sheet glass to adsorb the sheet glass on both sides of the cutting line; separating means for separating the means from each other, bending and cutting the sheet glass while it is being held between the pressing means and the suction means, and separating the cut surfaces of the cut sheet glass by separating the suction means from each other. Features: Flat glass cutting equipment.