JPH04280828A - Cutting of plate glass and device therefor - Google Patents

Abstract

PURPOSE:To provide a method for cutting plate glass, capable of folding and curing without requiring a skilled worker and automatizing folding and cutting. CONSTITUTION:One face of plate glass 26 sandwiching a cutting line 1 is absorded on one suction table 12 and the other face of the plate glass 26, sandwiching the cutting line 1, on the other suction table 14. Then, at least one suction table is rotated around a lower position of the cutting line 1 as the center 44 of rotation, tha plate glass 26 is folded and cut and the cut sections of the cut plate glass 26 are separated. Since the cut sections can be mutually separated in cutting of the plate glass 26, mutual contact of the cut sections can be prevented and excellent cut is obtained. Powder of glass will not attached to the cut plate glass.

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 on a glass plate using a cutter, and then the glass plate is folded and cut along the cut line.

0002

[Prior Art] Conventionally, when cutting a glass plate by hand, 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 point on the glass plate.
Next, the worker uses a hammer along the cut line of the glass plate to fold the glass plate along the cut line with his or her hands, and then cuts the glass plate along the cut line.

In the case of mechanical folding, the glass plate is placed on the table of a glass plate cutting machine, and a cutting line is drawn at the desired cutting position on the glass plate using a cutter. After making the cut line, the belt conveyor moves the cut line of the glass plate until it is located on the folding roller, and at this position, the glass plate is folded along the cut line. In this way, the glass plate can be cut into a desired shape.

0004

However, when a glass plate is folded by hand by an operator, there is a problem in that a skilled operator is required to obtain a good fold. Furthermore, since productivity is low, there is a problem that cost reduction cannot be achieved. In addition, in the case of mechanical folding, glass powder is generated when cutting lines are made on the glass plate and when the glass plate is folded, and it adheres to the surface of the glass plate. There is a problem in that such glass powder causes scratches on the surface of the glass plate.

[0005]Recently, requirements for scratches on glass plates have become stricter, and glass plates for liquid crystals, glass plates for recording disks, etc. are not allowed to have surface scratches. The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for cutting a glass plate that does not require a skilled worker and can further reduce costs and achieve automation. do.

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention suctions one side of the glass plate across the cutting line with one suction table, and also suctions the surface of the glass plate across the cutting line. The other surface is suctioned by another suction table, and at least one of the suction tables is rotated around a position below the cut line as a rotation center to fold and cut the glass plate and to connect the cut surfaces of the cut glass plate to each other. Characterized by pulling apart.

[0007]

[Operation] According to the present invention, one side of a glass plate with a cut line across the cut line is suctioned by one suction table, and the other side of the glass plate across the cut line is sucked by the other suction table. Adsorb with. Next, at least one suction table is rotated about a position below the cut line as a rotation center to fold and cut the glass plate and separate the cut surfaces of the cut glass plate from each other.

[0008] Therefore, since the cut surfaces can be separated from each other when cutting the glass plate, it is possible to prevent the cut surfaces from coming into contact with each other, and it is possible to obtain a good folding edge. Also, glass powder does not adhere to it.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A method and apparatus for cutting glass plates according to the present invention will be described below with reference to the accompanying drawings. Figure 1, Figure 2
Suction tables 12 and 14 are provided on the pedestal 10. As shown in FIG. 3, vacuum chambers 16 and 18 are formed in the suction tables 12 and 14.
As shown in FIG. 1, there are many suction holes 24 in the upper plates 20 and 22.
, 24, . . . are formed so that the glass plate 26 processed along the cutting line 1 can be sucked. Vacuum chamber 16
, 18 are provided on both sides of the cutting line 1 so as to cover a predetermined area from the cutting line 1 so that the glass plate 26 can be sufficiently held by suction. And this vacuum chamber 16, 18
top plates 20, 22, frames 28, 30, bottom plates 32, 3
4, and the frames 28, 32 are further formed with knife edges 36, 38. The knife edges 36 and 38 are used to cut the glass plate 26 when folding and cutting the glass plate 26.
The glass plate 26 is cut by contacting both sides of the cutting line 6.

In FIG. 1, the suction table 12 is a stand 10.
A suction table 14 is fixed on the pedestal 10, and is rotatably attached to the pedestal 10. That is, in FIG. 1, arms 40 and 42 are provided on both sides of the suction table 12.
The arms 40, 42 are supported by shafts 44, 44. The center of rotation of this shaft 44 is located below the cutting line of the glass plate 26, as shown in FIG.

In the glass plate cutting apparatus according to the present invention constructed as described above, the glass plate 26 is first placed on the suction tables 12 and 14. The glass plate 26 is placed in advance so that its cutting line is located at the center of the knife edges 36 and 38. In this state, the vacuum chambers 16 and 18 act,
The glass plate 26 is suctioned onto the suction tables 12 and 14. In this state, grasp the handle 15 of the suction table 14 and
When the glass plate 26 is rotated clockwise as shown in , the glass plate 26 is cut along the cutting line. Moreover, since the center of the rotation shaft 44 of the suction table 14 is located below the cutting line,
The cut surfaces of the folded glass plate 26 are separated from each other, so that the cut surfaces of the glass plate 26 do not come into contact with chips.

In the embodiment described above, the suction table 14 was rotated using the handle 15, but as shown in FIG. The table 14 may be rotated by attaching the table 14 to the cylinder 46 and operating the cylinder 46. 5 and 6 show the structure of a second embodiment of the present invention. The glass plate cutting device of the present invention has a conveyor A along the frame 52 on the glass plate loading side.
A conveyor B is provided on the conveyor side of the glass plate. Figure 6
As shown in FIG. 2, the perforated belt 52 of the conveyor A revolves around a driving pulley 56, a driven pulley 58, a knife edge 60, a belt support plate 62, and a suction table 64. The upper portion of the perforated belt 52 is supported by a belt support plate 62 and a suction table 64. The suction table 64 has a vacuum chamber 66 similar to the first embodiment.
Long grooves 68, 68 formed in the suction table 64
The glass plate 70 is attracted onto the surface of the perforated belt 52 by suction from the vacuum chamber 66 via... That is, the long hole 68 is
They are formed along the rows of holes 53, 53... of the perforated belt 52, and when the vacuum chamber 66 is activated, the glass plate 70 is formed along the rows of holes 53, 53...
3. It is adsorbed through...

Further, a glass powder removing brush 72 is provided below the perforated belt 52 to remove glass powder adhering to the belt 52. The other conveyor B perforated belt 54 has a driving pulley 73 and a driven pulley 74.
, knife edge 76, suction table 78, and belt support plate 80. The knife edge 76 is arranged with a slight gap from the knife edge 60 on the conveyor A side, and the suction table 78 is arranged on the conveyor A side.
Like the suction table 64 shown in FIG. do. The perforated belt 54 is the belt 52
Similarly, a removal brush 77 is provided. Arms 86, 86 are provided on both sides of the conveyor B, and the arms 86,
86 is pivotally supported by a shaft 88. Therefore, conveyor B is
It can be rotated clockwise about a shaft 88 as shown in FIG.

Further, arms 92, 92 are pivotally supported on the pedestal 50 via shafts 90, 90, and a positioning bar 94 which also serves as an edge folding member is provided on the arms 92, 92. As shown in FIG. 6, the edge folding/positioning bar 94 is arranged at the center of the knife edges 60, 76. Further, an edge detector 96 is provided in front of the positioning bar 94 which also serves as an edge folding device. The edge detector 96 is a glass plate 70
The end face of the glass plate 70 is detected and the cut line of the glass plate 70 is the knife edge 60.
, 76, a control signal is given to the drive pulleys 56, 73 so that the drive pulleys 56, 73 are located at the positions shown in FIG.

In the second embodiment of the present invention constructed as described above, the glass plate 70 is connected by the perforated belt 52.
is conveyed, and when the edge detector 96 detects the end face of the glass plate 70, the perforated belts 52 and 54 touch the glass plate 70.
feed a predetermined amount and stop. In this position, the cutting line is located midway between the knife edges 60, 76, as shown in FIG. Next, the suction tables 64 and 78 are operated to suction the glass plate 70 onto the suction tables 64 and 78. When the conveyor B rotates clockwise around the shaft 88 in this state, the glass plate 70
is cut as shown in FIGS. 7 and 9.

FIG. 10 shows the state in which the front edge of the glass plate 70 is folded. When the end face of the glass plate 70 is detected by the edge detector 96, the perforated belt 52 stops at the glass plate position shown in FIG. The lugs 70A are cut. Further, in FIG. 11, the rear edge of the glass plate 70 is shown folded. When the end face of the glass plate 70 is detected by the edge detector 96, the perforated belt 54 stops at the glass plate position shown in FIG. Ear 70B is cut.

In the embodiment described above, the edge detector 96 was used to position the glass plate, but as shown in FIG. 12, the positioning bar 94 may be used for positioning. That is, the glass plate 70 is temporarily stopped by the positioning bar 94, and from this position, the glass plate 70 is fed a predetermined amount to position the cutting line at the middle position of the knife edge. An optical sensor, a microswitch, an imaging camera, etc. can be used as the edge detector. Particularly in the case of an imaging camera, the cutting line may be directly detected by image processing.

In the above embodiment, a method of vacuum suctioning the glass plate was used as the glass plate holding table, but other glass plate holding tables such as a table equipped with means for holding the glass plate from above or an adhesive table may also be used.

[0019]

Effects of the Invention As described above, according to the glass plate cutting method and apparatus of the present invention, one side of the glass plate with a cut line across the cut line is suctioned by one suction table, and , the other side of the glass plate across the cutting line is sucked by the other suction table, and at least one suction table is rotated around a position below the cutting line as a rotation center to fold and cut the glass plate. The cut surfaces of the glass plates can be separated from each other. Therefore, it is possible to prevent the cut surfaces of the glass plates from coming into contact with each other, so that a good folding edge can be obtained.

[0020] Furthermore, when cutting the glass plate, the suction table holds the glass plate by suction, so even if the glass plate is particularly thin, for example 0.3 mm to 1.5 mm, The glass plate can be folded and cut along the cutting line, and no defects will occur on the folded cut surface of the glass plate. Furthermore, in the case of a glass plate in which a plurality of cutting lines are attached in advance to the glass plate and the glass plate is bent and cut one after another, for example, the plate is thick and the cutting lines are cut in the vertical and horizontal directions of the glass plate 26 as shown in FIG. Even if multiple cutting lines 1 are attached to the glass plate, the glass plate can be sufficiently adsorbed and held on the suction table, so when trying to fold and cut along the desired cutting line, there is no need to worry about other cutting lines. It is possible to prevent the damage from occurring.

Furthermore, since the glass plate can be cut automatically, it is possible to save labor, improve productivity, and reduce costs. Further, since glass powder generated when cutting the glass plate can be removed without damaging the surface of the glass plate, the quality of the glass plate can be improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a first embodiment of a glass plate cutting device according to the present invention.

FIG. 2 is a side view of the first embodiment of the glass plate cutting device according to the present invention.

FIG. 3 is an enlarged view of the main parts of the first embodiment of the glass plate cutting device according to the present invention.

FIG. 4 is an enlarged view of the main parts showing the cutting state of the first embodiment of the glass plate cutting device according to the present invention.

FIG. 5 is a plan view of a second embodiment of the glass plate cutting device according to the present invention.

FIG. 6 is a side view of a second embodiment of the glass plate cutting device according to the present invention.

FIG. 7 is a plan view showing a cutting state of the second embodiment of the glass plate cutting device according to the present invention.

FIG. 8 is an enlarged view of main parts showing the state before cutting of the second embodiment of the glass plate cutting device according to the present invention.

FIG. 9 is an enlarged view of the main parts showing the cutting state of the second embodiment of the glass plate cutting device according to the present invention.

FIG. 10 is an enlarged view of the main parts showing the glass plate front edge folded state of the second embodiment of the glass plate cutting device according to the present invention.

FIG. 11 is an enlarged view of the main parts showing the rear folded state of the glass plate of the second embodiment of the glass plate cutting device according to the present invention;

FIG. 12 is an enlarged view of the main parts showing how the positioning bar is used in the second embodiment of the glass plate cutting device according to the present invention.

[Explanation of symbols]

10... Frame 12, 14...Suction table 16, 18...vacuum chamber 24...Suction hole 26...Glass plate 44...axis

Claims (5)

[Claims] 1. A method for cutting a glass plate in which a glass plate with a cut line is cut by folding the glass plate along the cut line, wherein one surface of the glass plate across the cut line is held on one table, and the The other surface of the glass plate across the cutting line is held by the other table, and at least one table is rotated about a position below the cutting line as a rotation center to fold and cut the glass plate and cut the cut glass plate. A method of cutting glass plates characterized by separating the surfaces. 2. A glass plate cutting device for cutting a glass plate with a cut line by folding it along the cut line, comprising: one table that holds one surface of the glass plate across the cut line; The other table that holds the other surface across the cutting line of the plate and at least one table are pivoted around a position below the cutting line as a rotation center, and the glass plate is bent and cut by rotating the at least one table. A glass plate cutting device comprising: rotating means for separating the cut surfaces of the cut glass plate from each other. 3. A method for cutting a glass plate in which a glass plate with a cut line processed is folded and cut along the cut line, wherein the glass plate with the cut line processed is conveyed by one conveyor, and the cut line of the glass plate is cut. One of the sandwiched surfaces is held by one conveyor, and the other surface sandwiching the cut line of the glass plate is held by another conveyor, and at least one conveyor is rotated about a position below the cut line as a rotation center, A method for cutting a glass plate, comprising folding and cutting the glass plate and separating the cut surfaces of the cut glass plate from each other. 4. A glass plate cutting device for cutting a glass plate with a cut line by folding it along the cut line, wherein the glass plate is conveyed and one side of the glass plate across the cut line is held. one conveyor, another conveyor parallel to the one conveyor that conveys the glass plate and holds the other side of the glass plate across the cut line, and at least one conveyor that holds the other side of the glass plate across the cut line; Cutting of a glass plate characterized by comprising: a rotation means that is supported as a rotation center and rotates at least one conveyor to fold and cut the glass plate and separate the cut surfaces of the cut glass plate from each other. Device. 5. In the glass plate cutting device according to claim 2 or 4, wherein the glass plate having cut lines is cut by folding it along the cut lines, the cut line for folding the edge of the glass plate is used to cut the glass plate at the front or rear edge. A glass plate cutting device characterized in that a selvage-folding member is attached for folding the selvage by descending from above and cutting the selvage of the glass plate.