JPS5869733A - Cutting, separating and treating method of flat glass material and apparatus - Google Patents

Abstract

PURPOSE:To cut and separate a flat glass material well efficiently with certainty without adversely affecting the product parts, by heating the scrap parts of the flat glass material having cuts side by side in the long direction thereof with a burner. CONSTITUTION:A flag glass material 2 having cuts 2 corresponding to the product shape to be obtained and cut reaches a given working position, and the flat glass material 1 is sensed by a sensing means 14, e.g. a phototube, to stop a working conveyor 12 for a while. The respective burners 15 and 15 arranged in two rows side by side above the working conveyor 12 along two V-belt conveyores 13 and 13 of the working conveyor 12 are connectedly driven and lowered to a position at a given level near the flat glass material 1 and stopped for a given time. Thus, the scrap parts 4 of the flat glass material 1 are locally heated with the burners 15 and 15 to cause the thermal stress due to the temperature difference between the scrape parts 4 and the unheated part. The scrap parts 4 are then crushed during the time when the burners 15 and 15 are at the lowered and stopped position to separate the respective product parts 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting and separating a plate glass material into a desired shape, and particularly to a method and apparatus for cutting and separating relatively small plate glass products such as rearview mirrors from a plate glass material.

Conventionally, when sheet glass products used for rearview mirrors, etc. are cut from the raw material sheet glass material, the product must be cut into strip-shaped sheet glass materials (1) that are slightly wider than the sheet glass product, as shown in Figure 1. For example, circular incisions (2) corresponding to the shape are striated in parallel in the longitudinal direction to obtain a central product part (3). Therefore, the product part (3) is replaced by a continuous margin part (4) at the periphery.
Because it is extremely difficult to remove the glass as it is, conventionally, multiple sheets of glass with the aforementioned notches were stacked on top of each other on a table, and the waste portion was manually folded using a clamping tool or the like. However, in this case, it is not only time-consuming and inefficient because it is a manual process, but also the end faces of the product part and the waste part collide with each other during bending and cutting. There is a drawback that partial "chips" tend to occur at the peripheral edge of the product part due to the combined rubbing force and the like.

Therefore, the present invention was made to solve the above-mentioned drawbacks, and by heating the waste portion with a burner, local thermal stress is generated and the product is crushed, which has no adverse effect on the product portion. The aim is to perform separation processing reliably and with high efficiency without any problems.

That is, in the present invention, the glass material of the required length, in which cuts corresponding to the desired product shape to be cut are arranged in parallel in the longitudinal direction, are arranged in rows for each required distance in the longitudinal direction. It is characterized by locally heating and crushing the sacrificial portions on both sides using two rows of burners and separating them into each product portion.

Next, embodiments of the present invention will be explained based on the drawings together with an outline of the apparatus used.

The plate glass material (1) to be cut is a sheet glass material (1) that is slightly wider than the product shape and has the required length to allow trimming of multiple pieces (for example, 5 to 15 pieces) depending on the size and shape of the plate glass product to be cut. Use a strip-shaped one. In this plate glass material (1), for example, circular notches (2) corresponding to the shape of the product to be cut as shown in FIG. With a material, the plate glass material (1) has a notch (
Since it is wider than the product part (3) delimited by 2), the sacrificial margin parts (4) on both sides are continuous over the entire length of the sheet glass material (1).

In addition, to explain the main parts of an example of the separation processing apparatus used in carrying out the present invention, (10) is a plate glass material (1).
This is a supply conveyor for sending the waste material to the waste crushing section (11), and is made of an endless rubber flat belt or the like. (
121 is a processing conveyor that extends at the same level on the extension line of the supply conveyor (1) in the waste material crushing processing section 0, and is made up of two endless V-belts + 131 f131 arranged in parallel. The distance between the V-belts +131 and +13 can be adjusted as appropriate depending on the width of the glass plate material (1) to be processed. The processing conveyor (121) has a photocell or other electrical or mechanical device connected to a temporary stop mechanism (not shown) near the tip of the processing conveyor (121). detection means fil
is provided. (151 (151 is a processing conveyor (2 V belts above 121 + 131 t1
3, the burners are arranged in rows and hung down at required intervals in the extending direction of the burners.
The number and position are determined to correspond to the sacrificial margin portions (4) on both sides of the burner 1, and the interval between the burners α9α9 in the row direction and the interval between both rows can be adjusted. In response to the temporary stop action of the processing conveyor 02, the burners f+51 and Q51 in both rows descend to a predetermined height position where the nozzle portion (161 (161) is close to the sheet glass material (1), stop for a certain period of time, and then rise. 07) is a feed conveyor for sending the product portion (3) separated in the waste material crushing processing section (ID) to the next process, and the rubber rings are arranged at required intervals. A large number of fitting rollers Q81 are arranged in parallel in the transport direction, and the final product part (3) of the plate glass material (1) from the processing conveyor 02 to -
) is fed into the feed conveyor (1η (1
Seven of them are installed in parallel.

First, as described above, the sheet glass material (1) with cuts (2) corresponding to the shape of the product to be cut is fed and loaded onto the stopped supply conveyor (10) with its longitudinal direction being the feeding direction. At this time, a positioning ruler (191) is provided near one side of the supply conveyor (10), and the side edge of the plate glass material (1) is inserted into this ruler (19) as shown in Figure 4. Position it in this manner and place it in a fixed position.

Then, the supply conveyor (1o) is driven, and the plate glass material (1) is transferred at a relatively high speed (for example, about 11 m The processing conveyor (121) is synchronized with the supply conveyor (10) and simultaneously driven at the same speed.
The plate glass material (1) fed by 0) is subsequently fed. This processing conveyor (two V-belts f13 of 12) (131) is set so that the interval is narrower than the width of the plate glass material (1), and as shown in Fig. 5, the plate glass material (1) is The waste portion (4) has two ■bells) (13) (The waste portion (4) is made to protrude laterally from the 13, and is supported so that the crushed debris can easily fall when the waste portion (4) is crushed. In addition, two V-belts 03αJ
It is not preferable to make the spacing too narrow because the supporting condition will become unstable.

When the plate glass material (1) sent by the processing conveyor az reaches a predetermined processing set position, for example, when the tip of the plate glass material (1) reaches the tip of the processing conveyor (121), it is transferred to a phototube or the like. The processing conveyor (121) is temporarily stopped upon detection by the detection means (141), and the plate glass material (1) is held stationary at a predetermined position within the sacrificial margin crushing processing section (1).

At the same time, two rows of burners (15) +151 arranged in parallel along the two V-belts α903 of the processing conveyor tta are connected to the nozzle section (16f) in conjunction with the stopping action of the processing conveyor (121). +1
61 is lowered to a predetermined height position close to the plate glass material (1), and stopped at that position for a certain period of time (for example, 5 seconds) using a timer or the like. Each burner in both rows (151
(151 is both ends of the plate glass material (1) in the above-mentioned resting position and each product part + 3) (31 is the sacrificial margin on both sides (
The interval has been adjusted to correspond to 4), so the 6th
Each nozzle part (lffl (16
The flame jetted from 1 touches the margins on both sides of the glass plate (
4), especially the circular product part (as shown in the figure).
3) (31 spaces (burner +1 at the place where it became)
51 +151 is at the lowering stop position, the sacrificial portion (
4) is heated locally. Each nozzle part (161+1
The caliber of 61 is 0.2~2. Oran level, especially 1.
Preferably, the diameter of the nozzle is smaller than 0.0 cm. By making the nozzle diameter small in this way, the local heating effect can be enhanced and the temperature difference between the heated area and the unheated area can be increased. In addition, each burner α51 (nozzle part 16 of Is) (1
61 may be a device that injects flame in a vertical direction, but in particular, as shown in FIGS. 5 to 7, a nozzle portion (161f
16] with the axis of the burner in the vertical direction (for example, 30° to 6
It is preferable to bend the flame at 0°) and direct the flame jet from each nozzle part f16) diagonally to the side so that it hits the sacrificial portion (4), so that the burner crushes the sacrificial portion and penetrates the glass surface. This prevents the conveyor made of the V-belt from being burnt out, and also prevents flames from going around the center of the glass plate material (1), eliminating the risk of heating the product part (3). This point is one of the features of the device of the present invention.

Note that a mixed gas of propane gas and oxygen is preferably used as the fuel for the burner f15) (151), but other gases may also be used.

By locally heating the sacrificial margin portions (4) on both sides of the plate glass material (1) with the burner (151) as described above, the temperature difference between the sacrificial margin portions (4) and the unheated portions is The burner (1
While the lowering stop position (51t15) is at the descending stop position, the sacrificial portion (
4) is crushed and separated into each product part (3). In other words, the shredded waste portion, that is, the crushed pieces, is separated from the product portion (3) by the cut (2) and transferred to the processing conveyor (1).
2) and each product part (3) remains on the processing conveyor (12) in a separated state (FIG. 8).

Next, after a certain period of time has elapsed to complete the crushing process by the heating, the burner (1ω) is raised and returned to its original position, and the processing conveyor O2 and the feed conveyor (171 are By driving each part, the separated product part (3) is attached to the plate glass material (1).
) at the same speed (for example, 11 m/min) as the feed conveyor (1η).

The feed conveyor (1η) is the same speed as the processing conveyor (12) until the last product part (3) of the minus plate glass material (1) is sent out, and the final product part (3) is
) is placed on the feed conveyor (17), it is detected and the speed is switched to a low speed (for example, about 1.3"/min) by setting a timer from the high-speed start, and each product part (
3) is sent out at low speed. Furthermore, this feed conveyor aη
It is transferred to the next process by a continuous transfer conveyor.

On the other hand, when the delivery of the product part (3) from the processing conveyor 021 is completed, the new sheet glass material (1) placed on the supply conveyor that had previously stopped during processing is automatically transferred onto the processing conveyor α2. The processing conveyor of the waste material crushing section (11) carries out the same action as described above, and the processing conveyor of the waste material crushing unit (11) removes the waste material (6 minutes)
4) is crushed, separated into each product part (3), and sent out. In addition, at the time of this feeding, at the same time as the separation is completed, the processing conveyor 02 is moved horizontally to the position where it is continuous with the previous feeding conveyor (1η) and the feeding conveyor (17) (as shown by the chain line in Figure 3). In this state, the processing conveyor (12) and the feed conveyor (17) are driven to send out each product part (3).Then, the processing conveyor +13 returns to its original position and performs exactly the same operation as above. By alternately using two feed conveyors (lη (17') installed in parallel) and by switching between low and high speeds of the feed conveyor, the processing capacity of one set of burner heads can be doubled. The product part (3
) can be transferred at low speed.

Thus, the separated product parts (
3) As a transfer means, as shown in Fig. 9 or 10, a wide transfer conveyor with a large number of rollers arranged in series is installed on the feed conveyor αη (17'), and the transfer conveyor It is desirable to provide a cleaning section (21) in the cleaning section t211, and to provide an air injection pipe with an injection nozzle at the bottom slightly above the transfer section to the cleaning section t211.In this case, the separated product section (3) Before being sent to the cleaning part I21), it passes through the lower part of the air injection pipe, that is, the air injection part (Fig. 11), and the air injection here removes minute chips and crushed powder that adheres to the product part (3). After blowing away and removing the
The product part (3) can then be sent to the factory to further wash away crushed powder and the like, and then transferred to a subsequent process such as a curvature shaping process to obtain a curvature suitable for a rearview mirror or the like.

It should be noted that the above-mentioned embodiments using an automated separation processing device indicate particularly suitable cases for carrying out the method of the present invention, and the present invention is not limited thereto; for example, The configuration has been improved, such as omitting the supply conveyor +11 and making the processing conveyor 02 longer than the supply conveyor, using a single wide feed conveyor, and making it possible to perform each operation manually. The invention can be modified and implemented in various ways without departing from the scope of the claims.

As described above, the present invention cuts a sheet glass material (1) of a required length in which cuts (2) corresponding to a desired product shape to be cut are arranged in parallel in the longitudinal direction. Two rows of burners arranged in parallel rows at different intervals f151 +15
1, the waste portions (4) on both sides are locally heated and crushed, and separated into each product portion (3). It is possible to perform separation processing extremely easily and reliably without requiring significant human labor, and it is also possible to perform separation processing on a large number of product parts at once in a short time, and moreover, it can be automated using a separation processing device as in the embodiment. It is also extremely easy to process, and therefore processing efficiency can be greatly improved compared to the case where the process is performed by manually folding. In particular, since the sacrificial portion is locally heated and crushed, there is no risk of "chips" occurring in the product part due to the abrasion force that occurs when manually folding and cutting. There is no effect from heating, and no defective products occur due to separation effects.

Furthermore, when using a device in which the nozzles of two rows of burners arranged in parallel above the processing set position of the sheet glass material are bent toward the outside of the sheet glass material, the injected flame is diagonally directed toward the sacrificial margin on both sides of the sheet glass material. The flame can be applied to the side, preventing the flame from wrapping around the center of the glass plate material, and there is no risk of heating the product, so local heating can be performed efficiently and reliably, and the product can be heated without any heat. The crushing process can be carried out without any adverse effects, and the above method can be carried out suitably.

Therefore, according to the present invention, relatively small plate glass products such as rearview mirrors can be efficiently cut and separated from plate glass materials, greatly contributing to improving the manufacturing efficiency of rearview mirrors and the like.

[Brief explanation of drawings]

Figure 1 is a perspective view illustrating a plate glass material with cuts corresponding to the product shape, Figure 2 is a front view schematically showing the separation processing equipment, Figure 3 is a plan view of the same, and Figure 4 is a plate glass material. A cross-sectional perspective view of a portion of the product placed on the supply conveyor,
Figure 5 is a cross-sectional view of the plate glass material being sent to the processing conveyor, Figure 6 is a cross-sectional view of the heated state with the burner lowered, Figure 7 is a perspective view of a part of the same as above, and Figure 8 is the waste material. FIGS. 9 and 10 are a schematic front view and a plan view showing other embodiments of the separation processing device, respectively, and FIG. 11 is a side view of the air injection unit. be. Patent applicant Toyo Kogyo Co., Ltd. Figure 5 i2 Figure 6 ↑ 2

Claims (1)

[Claims] 1. A sheet glass material of a required length, in which cuts corresponding to the desired product shape to be cut are arranged in parallel in the longitudinal direction, is arranged in rows at required intervals in the longitudinal direction. A method for cutting and separating sheet glass material, characterized by locally heating and crushing the sacrificial portions on both sides using two rows of burners installed, and simultaneously separating the product into a plurality of product parts. 2. Above the processing set position of the plate glass material supplied by the conveyor as appropriate, heating nookners are arranged in two rows parallel to each other at the required intervals in the longitudinal direction along both sides of the plate glass material, and these two rows Cutting and separation of sheet glass material, characterized in that the nozzle portion of each burner is formed to be bent toward the outside of the sheet glass material, so that the jet flame can be sprayed diagonally to the side toward the sacrificial portions on both sides of the sheet glass material. Processing equipment.