TW201335086A - Device for cutting glass substrates - Google Patents

Abstract

The present invention pertains to a device for cutting glass substrates, wherein a cutting roller provided with a first protrusion on the roller surface is made to rotate while a glass substrate is transported in a transport direction by a conveyor, and the bottom surface of the glass substrate below a cutting line, which is orthogonal to the transport direction, is pushed up by the first protrusion, thereby cutting the glass substrate along the cutting line. A second protrusion is disposed on the upstream side surface of the first protrusion of the cutting roller in the direction of rotation.

Description

Glass plate cutting device

The present invention relates to a cutting device for a glass sheet.

Patent Literatures 1, 2, and the like disclose a belt-shaped glass plate (also referred to as a glass ribbon) that conveys a cutting line (also referred to as a cutting line or a scribe line) by a roller conveyor, along which the cutting is performed. A cutting device for a glass plate that is cut by a wire.

The cutting device of Patent Document 1 includes a substantially triangular column-shaped cutting roller as a cutting roller, and the cutting device of Patent Document 2 includes a pressure roller as a cutting roller. The cutting rollers are rotated to press the belt-shaped glass plate up or down with respect to the conveying surface, whereby a bending moment is generated on the cutting line, and the belt-shaped glass sheet is cut along the cutting line.

The cutting device and the cutting line processing device are provided adjacent to a glass plate manufacturing device such as a floating method. In other words, the slow-cooled ribbon-shaped glass sheet continuously produced by the glass sheet manufacturing apparatus is directly conveyed while the cutting line is processed by the cutter of the cutting line processing apparatus. The processing direction of the cutting line is a direction orthogonal to the conveying direction of the strip-shaped glass sheet. After the cutting line is processed, the strip glass plate is cut by the above cutting device. Thereby, a rectangular glass plate of a specific size can be obtained from the glass plate. In addition, as a glass plate manufactured by the glass plate manufacturing apparatus, it is known that a thickness of several millimeters or more used for applications such as construction and automobiles, and a thickness of 1 mm used in an FPD (Flat Panel Display) or the like is used. The following.

On the other hand, in addition to Patent Documents 1 and 2, the cutting device 1 shown in Fig. 10 is also used.

Fig. 10 is a side view of the cutting device 1, showing a state in which the strip glass plate 7 is cut by the cutting roller 4.

The cutting device 1 is configured by providing a cutting roller 4 on a roller conveyor including a plurality of rollers 2, 2, ..., 3, 3, .... The cutting roller 4 is formed in a cylindrical shape, and a projection 5 having a rectangular cross section is provided on the surface of the roller. The projection 5 is provided in parallel with the rotation shaft 6 of the cutting roller 4.

The cutting roller 4 is rotatably driven at a timing when the cutting line 8 of the strip-shaped glass sheet 7 being conveyed in the direction indicated by the arrow A reaches the cutting roller 4, and the cutting line 5 is lifted up by the projection 5 The lower surface of the lower surface of 8 is such that the strip-shaped glass sheet 7 is cut along the cutting line 8.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent No. 2596054

Patent Document 2: Japanese Patent Laid-Open Publication No. 2009-262520

In the prior art glass sheet cutting apparatus 1 shown in Fig. 10, the lower surface of the strip-shaped glass sheet 7 to be cut is lifted by the projections 5 by the lower surface of the cutting line 8, so that it is cut. The portion in the vicinity of the broken wire 8 is deflected upward. When the strip-shaped glass plate 7 is cut along the cutting line 8 in this state, the front end portion 7A of the strip-shaped glass sheet 7 in the transport direction is rebounded by the above-mentioned upward deflection, that is, rebounded. The force is flexibly deflected downward and falls. Therefore, the conveyance direction front end portion 7A of the belt-shaped glass plate 7 is broken by the roller surface 4A of the cutting roller 4 or the boundary surface portion 4B of the roller surface 4A and the projection 5, and is broken (lack). The problem as described above is that the thinner the thickness of the strip-shaped glass sheet 7, the higher the frequency of occurrence, particularly in the strip-shaped glass sheet 7 having a thickness of 0.7 mm or less. That is, the reason is that the thinner the thickness of the strip glass plate 7, the band glass The more the glass sheet 7 is easily deflected, the lower the strength.

The present invention has been made in view of the above-described circumstances, and an object of the invention is to provide a cutting device for a glass sheet which can prevent breakage of a leading end portion of a glass sheet on the upstream side in a conveying direction which occurs immediately after cutting a glass sheet.

In order to achieve the above object, the present invention provides a glass sheet cutting apparatus that rotates a glass sheet in a conveying direction by a conveyor while rotating a cutting roller provided with a first projection on a surface of the roller. Opening the lower surface of the glass sheet below the cutting line orthogonal to the conveying direction by the first projection, and cutting the glass sheet along the cutting line;

A second projection is provided on the upstream side surface of the first projection in the rotation direction of the cutting roller.

According to the invention, when the lower surface of the lower surface of the cutting line of the glass sheet is lifted by the first projection of the cutting roller, and then the glass sheet is cut along the cutting line, the conveying direction of the glass sheet on the upstream side in the conveying direction The distal end portion is in contact with the second projection provided on the upstream side surface of the first projection in the rotation direction of the cutting roller, and is passed through the cutting roller in a state where it is prevented from falling to the surface of the roller.

Thereby, it is possible to prevent breakage of the front end portion of the glass sheet in the transport direction on the upstream side in the transport direction which occurs immediately after the glass sheet is cut.

In the cutting device for a glass sheet according to the present invention, it is preferable that a height of the second projection from a rotation axis of the cutting roller is set lower than a rotation of the first projection from the rotation axis height.

By setting the height of the second projection and the height of the first projection as described above, the edge on the upstream side in the rotation direction of the upper surface of the first projection can lift the lower surface below the cutting line of the glass sheet, thereby The glass plate is surely cut along the cutting line. Further, the height of the second projection and the height of the first projection are respectively referred to from the rotation axis of the cutting roller to the second The length from the upper surface of the projection, the length from the rotation axis of the cutting roller to the upper surface of the first projection.

The second projection of the present invention may have a function of preventing the front end of the glass sheet in the conveyance direction on the upstream side in the conveyance direction from falling down to the surface of the roller. In other words, the front end portion of the glass sheet in the transport direction on the upstream side in the transport direction may have a function of not falling onto the surface of the roller of the cutting roller when passing through the cutting roller. For example, the second protrusion may be a convex portion provided at a predetermined interval from the upstream side of the first protrusion in the rotation direction of the cutting roller. Further, the shape of the second projection is not limited to the convex portion, and may be a side sectional fan-shaped member. The convex portion and the side cross-sectional fan-shaped member may be an integral member, or may be a plurality of members arranged at a predetermined interval in the direction of the rotation axis of the cutting roller.

In the cutting device for a glass sheet according to the present invention, it is preferable that a height of the second projection from a rotation axis of the cutting roller is equal to a height of the first projection from the rotation axis.

Further, it is preferable that the peripheral speed of the second projection is the same as the conveying speed of the glass sheet before cutting.

According to the invention, when the lower surface of the lower surface of the cutting line of the glass sheet is lifted by the first projection of the cutting roller, and then the glass sheet is cut along the cutting line, the conveying direction of the glass sheet on the upstream side in the conveying direction The front end portion is in contact with the second projection having the same height as the first projection. According to the present invention, it is possible to prevent the front end of the glass sheet from being lowered to the surface of the roller of the cutting roller, and to smoothly pass the cutting roller to the cutting device in a state where the deflection is suppressed. The roller on the downstream side of the roller.

Further, as described above, the height of the second projection is lower than the height of the first projection, or the height of the second projection is equal to the height of the first projection, and the circumferential speed of the second projection of the cutting roller is set. The speed is the same as the conveying speed of the glass sheet before the cutting, so that it is possible to prevent the contact scratch caused by the difference between the conveying speed of the glass sheet and the circumferential speed of the second projection without changing the rotation speed of the cutting roller. Transfer the glass plate. The same speed as mentioned here The degree means that the difference between the circumferential speed of the second projection and the conveying speed of the glass sheet before cutting is within 5%.

In addition, the height of the second projection and the height of the first projection refer to the length from the rotation axis of the cutting roller to the upper surface of the second projection, and the rotation axis from the cutting roller to the first projection. The length of the upper surface.

In the cutting device for a glass sheet according to the present invention, it is preferable that the second projection is provided in parallel with a rotation axis of the cutting roller.

By providing the second projection in parallel with the rotation axis of the cutting roller as in the present invention, the entire region of the leading end portion in the conveying direction of the glass sheet on the upstream side in the conveying direction does not fall to the roller surface. In this case as well, the second projections may be an integral body or a plurality of members arranged at a predetermined interval.

In the glass plate cutting device of the present invention, the thickness of the glass plate is preferably 0.7 mm or less. The glass sheet cutting device of the present invention is particularly effective in the case of cutting a glass plate of 0.7 mm or less which is easily deflected and has a low strength.

In the glass plate cutting device of the present invention, it is preferable that the roller disposed on the downstream side in the conveying direction of the cutting roller is disposed on a roller that is disposed on the upstream side in the conveying direction of the cutting roller. The rotation speed is rotated more quickly, accelerating a specific time.

As described above, according to the cutting device for a glass sheet of the present invention, it is possible to prevent breakage of the leading end portion of the glass sheet in the transport direction on the upstream side in the transport direction immediately after the glass sheet is cut.

1‧‧‧cutting device

2‧‧‧Roller

2A‧‧‧Rollers

3‧‧‧Rollers

3A‧‧‧Roller

4‧‧‧Scissor roller

4A‧‧‧Roller surface

4B‧‧‧Border corner

5‧‧‧ Protrusion

6‧‧‧Rotary axis

7‧‧‧Striped glass plate

7A‧‧‧Transport direction front end

8‧‧‧ cut line

10‧‧‧ glass plate cutting device

12‧‧‧Strip glass plate

12A‧‧‧Transport direction front end

14‧‧‧ cut line

16‧‧‧Scissor roller

16A‧‧‧Roller surface

17‧‧‧Rotary axis

18‧‧‧Roller

20‧‧‧Roller

22‧‧‧Fixed roller

24‧‧‧Fixed roller

26‧‧‧Rectangle glass plate

28‧‧‧Protrusion

28A‧‧‧Upper surface

28B‧‧‧ edge

30‧‧‧ Protrusion

30A‧‧‧ surface

34‧‧‧Scissor roller

34A‧‧‧Roller surface

35‧‧‧Rotary axis

35A‧‧‧Rotary axis

36‧‧‧ Protrusion

38‧‧‧Small pieces

40‧‧‧Scissor roller

40A‧‧‧Roller surface

41‧‧‧Rotary axis

41A‧‧‧Rotary axis

42‧‧‧ Protrusion

44‧‧‧Scissor roller

44A‧‧‧Roller surface

45‧‧‧Rotary axis

46‧‧‧ Protrusion

48‧‧‧Small pieces

50‧‧‧Scissor roller

50A‧‧‧Roller surface

51‧‧‧Rotary axis

52‧‧‧Protrusion

56‧‧‧Scissor roller

56A‧‧‧Roller surface

57‧‧‧Rotary axis

57A‧‧‧Rotary axis

58‧‧‧Protrusion

58A‧‧‧Upper surface

60‧‧‧Scissor roller

60A‧‧‧Roller surface

61‧‧‧Rotary axis

61A‧‧‧Rotary axis

62‧‧‧ Protrusion

62A‧‧‧Surface

A‧‧‧ arrow

B‧‧‧ arrow

H ₁ ‧‧‧ Height

H ₂ ‧‧‧ Height

Fig. 1 is a plan view showing a cutting device for a glass sheet according to an embodiment.

Figure 2 is a side elevational view of the cutting device of the glass sheet shown in Figure 1.

Fig. 3A is a perspective view of a cutting roller of the cutting device for a glass sheet shown in Fig. 1;

Fig. 3B is a side view of the cutting roller shown in Fig. 3A.

Fig. 4 is an explanatory view showing a state in which the strip glass plate is cut by the cutting roller of Fig. 3A.

Fig. 5A is a perspective view showing a first modification of the cutting roller.

Fig. 5B is a side view of the cutting roller shown in Fig. 5A.

Fig. 6A is a perspective view showing a second modification of the cutting roller.

Fig. 6B is a side view of the cutting roller shown in Fig. 6A.

Fig. 7A is a perspective view showing a third modification of the cutting roller.

Fig. 7B is a side view of the cutting roller shown in Fig. 7A.

Fig. 8A is a perspective view showing a fourth modification of the cutting roller.

Fig. 8B is a side view of the cutting roller shown in Fig. 8A.

Fig. 9A is a perspective view showing a fifth modification of the cutting roller.

Fig. 9B is a side view of the cutting roller shown in Fig. 9A.

Figure 10 is a schematic side view of a cutting device of a prior glass plate.

Fig. 11 is an explanatory view showing a state in which the strip glass plate is cut by the cutting roller of Fig. 10;

Fig. 12 is a view for explaining a case where the glass plate is conveyed by the cutting device of the conventional glass plate.

Fig. 13A is a perspective view showing a sixth modification of the cutting roller.

Fig. 13B is a side view of the cutting roller shown in Fig. 13A.

Fig. 14A is an explanatory view of the operation of the cutting roller shown in Fig. 13A.

Fig. 14B is an explanatory view of the operation of the cutting roller shown in Fig. 13A.

Fig. 14C is an explanatory view of the operation of the cutting roller shown in Fig. 13A.

Fig. 14D is an explanatory view of the operation of the cutting roller shown in Fig. 13A.

Hereinafter, according to the accompanying drawings, the preferred embodiment of the cutting device for the glass sheet of the present invention is The embodiment will be described.

Fig. 1 is a plan view of a cutting device 10 for a glass sheet according to an embodiment, and Fig. 2 is a side view of a cutting device 10 for a glass sheet. In the figures, the direction in which the strip-shaped glass sheets 12 to be cut are conveyed is indicated by an arrow A. In addition, the glass plate cutting device 10 of the embodiment is a glass plate 12 having a thickness of 0.7 mm or less which is easily deflected and has a low strength, and is a glass plate to be cut, but the thickness of the glass plate 12 is It is not limited to this. However, in the case of cutting the ribbon-shaped glass sheet 12 of 0.7 mm or less which is easy to bend and has a low strength, the glass sheet cutting apparatus 10 of the embodiment can exert an effect especially.

As shown in Fig. 2, the glass sheet cutting device 10 includes a cutting roller 16 that cuts the strip-shaped glass sheet 12 along the cutting line 14. Further, a roller conveyor including a plurality of rollers 18, 18, ... is disposed below the upstream side in the conveying direction of the strip-shaped glass plate 12 via the cutting roller 16, and is provided below the downstream side in the conveying direction. A roller conveyor of a plurality of rollers 20, 20... Further, the rollers 18 and 20 are provided such that the surface levels thereof are at the same height.

Moreover, in order to facilitate the cutting of the strip-shaped glass plate 12, the fixing roller 22 is disposed above the upstream side in the above-described conveying direction of the cutting roller 16, and the fixed roller 24 is disposed above the downstream side in the conveying direction. The fixed rollers 22 and 24 are disposed at positions symmetrical with respect to the cutting roller 16, and the fixed roller 22 is sandwiched and held by the roller glass 18 together with the roller 18, and the fixed roller 24 is attached to the roller 20. The strip-shaped glass plate 12 to be cut and the rectangular glass plate 26 immediately after cutting are sandwiched and held up and down.

In addition, in FIG. 1, in order to clearly show the arrangement position of the cutting roller 16, the roller 18 and 20 are abbreviate|omitted. Further, as shown in Fig. 1, the fixed rollers 22 and 24 are arranged at a plurality of intervals (five in Fig. 1) at predetermined intervals in a direction orthogonal to the conveying direction of the strip-shaped glass plate 12. Further, the strip-shaped glass plate 12 is formed with a cutting line 14 on its upper surface, and the cutting direction of the cutting line 14 is a direction orthogonal to the conveying direction. The material of the fixed roller is not particularly limited, but it is preferable that the strip glass plate 12 and the rectangle are not scratched. The material of the glass plate 26.

3A is a perspective view of the cutting roller 16, and FIG. 3B is a side view of the cutting roller 16. Moreover, in these figures, the direction of rotation of the cutting roller 16 is indicated by an arrow B.

The cutting roller 16 is provided with a projection (first projection) 28 having a rectangular cross section in the side of the roller surface 16A. The projection 28 is provided in parallel with the rotation shaft 17 of the cutting roller 16 and over the entire length of the cutting roller 16. The cutting roller 16 is driven to rotate at a timing when the cutting line 14 of the strip-shaped glass plate 12 that is being conveyed reaches the cutting roller 16, and the projection 28 is lifted under the cutting line 14 as shown in FIG. The lower surface of the strip-shaped glass sheet 12 is thereby cut along the cutting line 14 to cut the strip-shaped glass sheet 12. The shape of the first projections 28 is not limited to a rectangular shape in a side cross section, and may be a side cross-sectional curved shape. Further, the material of the first projections 28 is a hard member containing a metal such as iron or steel, and is attached to the cutting roller 16 so as to be replaceable. For example, a fitting form and a subsequent form are preferable.

Specifically, the strip-shaped glass plate 12 is conveyed toward the cutting roller 16 by the rollers 18, 18, ..., and when the cutting line 14 reaches the vicinity of the cutting roller 16, the cutting roller 16 is cut. Start spinning. The instruction to start the rotation of the cutting roller 16 is a method in which the positional relationship between the projection 28 of the cutting roller 16 and the cutting line 14 is clearly grasped, for example, a counter for measuring the conveyance amount of the glass sheet while being in contact with the glass plate (counter) ) and other methods are provided. Further, it is preferable that the peripheral speed of the cutting roller 16 coincides with the peripheral speed of the roller 18. When the cutting roller 16 is rotated, the lower surface of the strip-shaped glass sheet 12 below the cutting line 14 of the strip-shaped glass sheet 12 is topped up by the projections 28, which is adjacent to the cutting line 14 of the strip-shaped glass sheet 12. A deflection torque is generated. Moreover, as the amount of bulging of the strip-shaped glass sheet 12 due to the projections 28 increases, the tensile stress on the surface of the strip-shaped glass sheet 12 increases. Further, when the crack under the cutting line 14 has a tensile stress corresponding to the stress-breaking point, the crack grows and cuts the strip-shaped glass sheet 12 along the cutting line 14, and the strip-shaped glass sheet 12 is cut. Broken rectangular glass plate of a specific length 26. The cutting roller 16 is further rotated after the cutting is completed, and stops when the next smooth roller surface 16A reaches the lower surface of the strip glass plate 12, and stands by until the next cutting line 14 comes.

Further, when the rectangular glass plate 26 is cut by the glass plate 12, the rollers 20, 20, which are disposed on the downstream side of the cutting roller 16, are controlled to rotate faster than the rotational speed of the roller 18. The way to speed up a specific time. Thereby, the rectangular glass plates 26, 26, which are continuously cut, are conveyed toward the downstream side of the rollers 20, 20, ... (not shown) in a state of being separated by a predetermined interval, thereby preventing The rectangular glass sheets 26 are in contact with each other and the contact between the rectangular glass sheets 26 and the strip-shaped glass sheets 12 is broken. Further, the range of the specific time is not particularly limited as long as it is a time in which the state can be separated by a specific interval.

However, as shown in FIG. 3A, FIG. 3B and FIG. 4, on the upstream side surface in the rotation direction of the projection 28 of the cutting roller 16, a projection (second projection) 30 for preventing the conveyance direction is provided. The conveying direction leading end portion 12A of the upstream side belt glass sheet 12 is dropped to the roller surface 16A.

Next, the action of the cutting roller 16 will be described with reference to Fig. 4 .

The lower surface of the lower side of the cutting line 14 of the strip-shaped glass sheet 12 being conveyed in the direction of the arrow A is lifted up by the projection 28 of the cutting roller 16 which is rotated in the direction of the arrow B, and the strip-shaped glass plate 12 is cut along the line. The broken wire 14 is cut. The conveyance direction front end portion 12A of the cut glass sheet 12 is in contact with the projection 30 provided on the upstream side surface of the projection 28 of the cutting roller 16, and is prevented from falling to the roller surface 16A. In this state, the cutting roller 16 is passed.

According to the glass sheet cutting apparatus 10 of the embodiment, it is possible to prevent breakage of the leading end portion 12A in the conveyance direction of the strip-shaped glass sheet 12 on the upstream side in the conveyance direction immediately after the strip-shaped glass sheet 12 is cut.

The protrusion 30 is oriented from the upper surface 28A of the protrusion 28 as shown in FIGS. 3A and 3B. The roller surface 16A has a side cross-sectional fan-shaped member having an arc-shaped curved surface 30A.

The projections 30 are not limited to the side-sectional fan-shaped projections 30 shown in FIGS. 3A and 3B as long as they have a function of preventing the conveying direction distal end portion 12A of the strip-shaped glass sheet 12 on the upstream side in the conveying direction from falling to the roller surface 16A. . In other words, it is sufficient that the front end portion 12A of the strip-shaped glass sheet 12 on the upstream side in the transport direction passes through the cutting roller 16 and does not fall to the roller surface 16A of the cutting roller 16 .

Hereinafter, a modification of the cutting roller will be described.

Fig. 5A is a perspective view showing a first modification of the cutting roller 34, and Fig. 5B is a side view of the cutting roller 34 shown in Fig. 5A.

The shape of the side surface of the protrusion (second protrusion) 36 provided on the roller surface 34A of the cutting roller 34 is the same as that of the protrusion 30 shown in FIG. 3B, and the protrusion 30 of FIG. 3A is a columnar body, and On the other hand, the projection 36 shown in FIG. 5A is configured by arranging the small-section fan-shaped small pieces 38, 38, ... in parallel with the rotation shaft 35 of the cutting roller 34 at a predetermined interval.

The cutting roller 34 shown in Figs. 5A and 5B also has the same function as the cutting roller 16 shown in Figs. 3A and 3B.

Further, the height of the projection 36 of the cutting roller 34 is lower than that of the projection 28. That is, the height H ₁ of the projection 36 from the rotation axis 35A of the cutting roller 34 is set to be lower than the height H _{2 of the} projection 28 from the rotation axis 35A. By setting the height H _{1 of the} protrusion 36 and the height H ₂ of the protrusion 28 in this way, the edge 28B on the upstream side in the rotational direction of the upper surface edge of the protrusion 28 can lift the cutting line 14 of the strip-shaped glass plate 12 (refer to the figure). 1) The lower surface below, so that the strip-shaped glass plate 12 can be surely cut along the cutting line 14.

Fig. 6A is a perspective view showing a second modification of the cutting roller 40, and Fig. 6B is a side view of the cutting roller 40 shown in Fig. 6A.

A projection (second projection) 42 is provided on the roller surface 40A of the cutting roller 40. The projection 42 is attached to the upstream side surface in the rotation direction of the projection 28 of the cutting roller 40 and is The vicinity of the projection 28 is provided at a distance from the projection 28, and is provided in parallel with the rotation shaft 41 of the cutting roller 40. Moreover, the interval between the projections 42 and the projections 28 is set according to the conveying speed of the strip-shaped glass plate 12 (see FIG. 1 and the like) and the peripheral speed of the cutting roller 40, and is set so as to prevent the conveyance of the strip-shaped glass plate 12. The direction leading end portion 12A is dropped to the interval of the roller surface 40A. Further, a gap may not be provided between the protrusion 28 and the protrusion 42 to connect the protrusion 42 to the protrusion 28.

The cutting roller 40 shown in Figs. 6A and 6B also has the same function as the cutting roller 16 shown in Figs. 3A and 3B.

Further, the height of the projection 42 of the cutting roller 40 is lower than that of the projection 28. That is, the height H ₁ of the projection 42 from the rotation axis 41A of the cutting roller 40 is set to be lower than the height H _{2 of the} projection 28 from the rotation axis 41A. By setting the height H _{1 of the} protrusion 42 and the height H ₂ of the protrusion 28 in this way, the edge 28B on the upstream side in the rotational direction of the upper surface edge of the protrusion 28 can lift the cutting line 14 of the strip-shaped glass plate 12 (refer to the figure). 1) Below the lower surface, the ribbon-shaped glass sheet 12 can be surely cut along the cutting line 14.

Further, the above-described effects can be similarly obtained by the cutting roller 16 shown in FIGS. 3A and 3B and the cutting roller 34 shown in FIGS. 5A and 5B.

Fig. 7A is a perspective view showing a third modification of the cutting roller 44, and Fig. 7B is a side view of the cutting roller 44 shown in Fig. 7A.

The shape of the side surface of the protrusion (second protrusion) 46 provided on the roller surface 44A of the cutting roller 44 is the same as that of the protrusion 42 shown in FIG. 6B, and the protrusion 42 of FIG. 6A is a columnar body. On the other hand, the projection 46 shown in FIG. 7A is configured by arranging the convex shaped pieces 48, 48, ... in parallel with the rotation axis 45 of the cutting roller 44 at a predetermined interval.

The cutting roller 34 shown in Figs. 7A and 7B also has the same function as the cutting roller 16 shown in Figs. 3A and 3B.

Fig. 8A is a perspective view showing a fourth modification of the cutting roller 50, and Fig. 8B is a view. A side view of the cutting roller 50 shown in Fig. 8A.

The projections 52 and 52 provided on the roller surface 50A of the cutting roller 50 are configured to have a columnar shape with a lower height than the projections 28. The projections 52 and 52 are provided on the upstream side surface in the rotation direction of the projection 28 of the cutting roller 50 and are in the vicinity of the projection 28, and are provided in parallel with the rotation shaft 51 of the cutting roller 50.

The cutting roller 34 shown in Figs. 8A and 8B also has the same function as the cutting roller 16 shown in Figs. 3A and 3B. Further, the protrusions 52 and 52 are not limited to one pair, and may be three or more.

Fig. 9A is a perspective view showing a fifth modification of the cutting roller 56, and Fig. 9B is a side view of the cutting roller 56 shown in Fig. 9A.

The protrusion (second protrusion) 58 provided on the roller surface 56A of the cutting roller 56 is a pillar having a height lower than that of the protrusion 28 and continuous with the protrusion 28, and the upper surface 58A is configured as a cutting roller 56. The rotation axis 57A of the rotary shaft 57 has an arc shape centered on it. Further, the upper surface 28A of the projection 28 is also formed in an arc shape.

The cutting roller 34 shown in Figs. 9A and 9B also has the same function as the cutting roller 16 shown in Figs. 3A and 3B.

In addition, the first to fifth modifications are also an example, and the second projection of the present invention is not limited to the above-described embodiment and the first to fifth modifications, and the strip-shaped glass plate 12 having the upstream side in the transport prevention direction is provided. The transport direction distal end portion 12A may be dropped to the surface of the roller of the cutting roller.

However, in the previous glass sheet cutting device 1 shown in FIG. 10, the lower surface of the strip glass sheet 7 to be cut is lifted by the projections 5 by the lower surface of the cutting line 8, so The portion that is close to the cutting line 8 is deflected upward. When the strip-shaped glass plate 7 is cut along the cutting line 8 in this state, as shown in Fig. 12, the leading end portion 7A of the strip-shaped glass sheet 7 in the transport direction is curved downward toward the lower side. In order to ensure the rotation range of the cutting roller 4, the distance between the roller 2A and the roller 3A before and after the cutting roller 4 is interposed. It is set to be wider than the other rollers 2 and 3. Therefore, when the front end portion 7A in the conveyance direction of the belt-shaped glass sheet 7 that has been cut by the cutting roller 4 is larger than the other rollers 3 and 3, the deflection below is increased. In view of this, there is a case where the strip-shaped glass plate 7 comes into contact with the surface of the roller of the cutting roller 4 to cause the band-shaped glass plate 7 to be scratched, or the leading end portion 7A of the belt-shaped glass plate 7 in the conveying direction is struck. On the surface of the roller of the roller 3A, the ribbon glass plate 7 is broken (lacked) or the ribbon glass plate 7 cannot be conveyed.

In FIGS. 13A and 13B, the cutting roller 60 for eliminating the above-described problem is shown. That is, Fig. 13A is a perspective view showing a sixth modification of the cutting roller 60, and Fig. 13B is a side view of the cutting roller 60 shown in Fig. 13A.

Cutting roller 60 is provided with a protrusion height H of the cutting roller on the surface 6OA of the roller 60 (second projections) 62 from the rotation axis 61A is set to ₁ and the height H from the projection 28 of the rotation axis 61A ₂ equal. And, FIG. 13A, FIG 13B, a projection 62 projecting from the lines 28A from above the surface 28 has a height H ₁ is the radius of curvature of the arcuate side section 62A of the fan-shaped member. Further, the protrusions 62 may be integrally formed as shown in FIG. 13A, or may be provided by placing the small-section fan-shaped pieces parallel to the rotation axis 61 of the cutting roller 60 at a predetermined interval as shown in FIG. 5A. Founder.

The action of the cutting roller 60 will be described with reference to the operation explanatory diagrams shown in Figs. 14A to 14D.

When the lower surface of the lower portion of the cutting line 14 of the strip glass plate 12 is lifted by the projection 28 of the cutting roller 60, then, as shown in Fig. 14A, the strip glass plate 12 is cut along the cutting line 14. when, as in FIG. 14B, the strip conveying direction upstream side of the conveying direction of the glass plate 12 front end portion 12A with the contact lines 28 of the protrusion height H ₂ is equal to the height H of the protrusions 62 _1. According to this, the cutting roller 60 prevents the leading end portion 12A of the belt-shaped glass sheet 12 from falling to the roller surface 60A of the cutting roller 60, and is formed by the projection 62 as shown in FIGS. 14C and 14D. When the deflection direction of the front end portion 12A in the conveyance direction is suppressed, the cutting roller 60 is smoothly passed to the rollers 20, 20, . . . provided on the downstream side of the cutting roller 60.

According to the cutting roller 60, it is possible to prevent the front end portion 12A of the belt-shaped glass sheet 12 which is formed after the strip glass sheet 12 is cut, from being damaged, and to smoothly take the strip from the cutting roller 60. The glass plate 12 is conveyed to the downstream side.

Further, by setting the height H _{1 of the} projection 62 equal to the height H _{2 of the} projection 28 as described above, and setting the peripheral speed of the projection 62 of the cutting roller 60 to be the same as the conveying speed of the belt-shaped glass plate 12, Further, it is possible to prevent the contact scratches caused by the difference between the conveyance speed of the strip-shaped glass plate 12 and the peripheral speed of the projections 62 from being transmitted, and to transport the ribbon-shaped glass sheet 12 without changing the rotation speed of the cutting roller 60.

Further, the peripheral speed of the projection 62 of the cutting roller 60 is set from the standby position of Fig. 14D to the position of Fig. 14C at the same speed as the conveying speed of the strip-shaped glass plate 12, from the position of Fig. 14C to the standby of Fig. 14D. The position is set to be faster than the conveying speed of the ribbon glass plate 12.

In addition, by providing the second projection in parallel with the rotation axis of the cutting roller, the entire region in the conveying direction leading end portion 12A of the belt-shaped glass sheet 12 on the upstream side in the conveying direction is not dropped to the roller surface.

Further, the material of the second projection is a soft member other than metal such as rubber, urethane or foamed styrene, and is attached to the cutting roller 16 so as to be replaceable. The chimeric form and the subsequent form.

In addition, the glass plate to be cut is not limited to the strip-shaped glass plate 12, and may be any shape as long as it is a rectangular-shaped glass plate which is conveyed on one surface and cut by a cutting roller.

The invention has been described in detail above with reference to the specific embodiments thereof. It is understood that various modifications and changes may be made without departing from the scope and spirit of the invention.

The present application is based on Japanese Patent Application No. 2012-010152 filed on Jan. 20, 2012, and Japanese Patent Application No. 2012- filed on Feb. 29, 2012. 043644, the contents of which are incorporated herein by reference.

12‧‧‧Strip glass plate

12A‧‧‧Transport direction front end

16‧‧‧Scissor roller

16A‧‧‧Roller surface

17‧‧‧Rotary axis

26‧‧‧Rectangle glass plate

28‧‧‧Protrusion

30‧‧‧ Protrusion

A‧‧‧ arrow

B‧‧‧ arrow

Claims (7)

A glass plate cutting device that rotates a glass plate in a conveying direction by a conveyor, and rotates a cutting roller having a first projection on a surface of the roller, and the first projection is orthogonal to the conveying direction. The lower surface of the glass plate below the cutting line is lifted up, and the glass plate is cut along the cutting line; and the second protrusion is provided on the upstream side surface of the first protrusion in the rotation direction of the cutting roller. . The cutting device for a glass sheet according to claim 1, wherein a height of the second projection from a rotation axis of the cutting roller is set to be lower than a height of the first projection from the rotation axis. The glass sheet cutting device according to claim 1, wherein the height of the second projection from the rotation axis of the cutting roller is equal to the height of the first projection from the rotation axis. A cutting device for a glass sheet according to claim 2, wherein the peripheral speed of the second projection is the same as the conveying speed of the glass sheet before cutting. The glass plate cutting device according to any one of claims 1 to 4, wherein the second projection is provided in parallel with a rotation axis of the cutting roller. The glass plate cutting device according to any one of claims 1 to 5, wherein the glass plate has a thickness of 0.7 mm or less. The glass plate cutting device according to any one of claims 1 to 6, wherein the roller disposed on the downstream side of the cutting roller in the conveying direction is disposed on the upstream side of the conveying roller in the conveying direction. The rotation speed of the roller is rotated more quickly to accelerate a certain time.