JPS59144597A - Method and device for pressing - Google Patents

Abstract

PURPOSE:To press samples under a uniform pressure by the cushion effect of the fluid on the rear of the samples by feeding a fluid between the upper and lower samples and sample fixing base plates to detach the samples from the fixing base plates and pressing the samples. CONSTITUTION:An upper sample 15 is attached along locating pins 9 on an upper sample fixing base plate 1, and the space between the sample 15 and the plate 1 is evacuated to a vacuum through a mouthpiece 11 for air to fix the sample 15. A lower sample 16 is similarly attached to a lower sample fixing base plate 3 and the space therebetween is evacuated to a vacuum through a mouthpiece 12 for air to fix the sample 16. When air is fed to a mouthpiece 14 for force feeding, a vertical driving part 5 ascends and the plate 3 contacts with a timing sensor 17. Then the space between the samples 15, 16 is evacuated to a vacuum through a mouthpiece 13 for evacuation; at the same time the samples 15, 16 are released from the attracted state and this time the air is fed through the mouthpieces 11, 12 to exert a uniform pressure on the rear of the samples. The pressure combined with the suction between the samples 15 and 16 is then exerted on the samples and the samples are pressed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press apparatus and a press method for pressing samples such as liquid crystal glass.

In recent years, liquid crystals have been widely used as display devices and are made by pressing two pieces of glass to create a predetermined gap and pouring liquid crystal material into the gear.

In order to set this gap, a method is used in which two pieces of glass are pressed together with a bead-shaped part with a diameter corresponding to the gap amount.However, this gap amount must be uniform over the entire surface. Furthermore, liquid crystal glass is generally not pressed thinly and uniformly, resulting in cracks, etc. Therefore, uniform pressing has become important.

Conventionally, this type of press method has often used a machine rod with excellent parallelism, flatness, and flatness, such as a Gouiset, to set the sample on the press surface and press it. Ta.

In the case of this method, there are two ways to pressurize: one using the weight of the Guiset itself, and another using hydraulic pressure and pressure, but in either case, the precision of the Guiset itself is required. Also, even if you use a high-precision goose set, it will hit unevenly due to variations in the thickness of the sample itself, and it will not be possible to apply pressure evenly over the entire surface.

Therefore, it often depends on the accuracy of the sample itself, and it has not been possible to perform satisfactory uniform pressing, especially for items that require high-precision pressing, such as glass for liquid crystals.

An object of the present invention is to provide a press apparatus and a press method that eliminate the drawbacks of the conventional examples.

In order to achieve this object, the present invention is characterized in that a fluid is caused to flow between the sample and the fixed substrate to release the sample from the fixed substrate, so that the sample is pressed with a so-called cushion effect.

The present invention will be described in detail below: FIG. 1 shows an embodiment of the invention.

1 is an upper sample fixing substrate that fixes the upper sample; 2 is an upper and lower connecting shaft that connects the upper and lower sample fixing substrates; 6 is a lower sample fixing substrate that slides along the upper and lower connecting shafts and fixes the lower sample; 4 is a bearing; and 5 is a Lift up the lower sample fixing substrate from below,
6 is a loose T-substrate shield rubber that creates a vacuum in the space between the upper sample fixing substrate and the lower sample fixing substrate; 7 and 8 are sample fixing substrates corresponding to the upper and lower samples, respectively. 9 and 10 are sample positioning bins, 11 and 1
Reference numeral 2 denotes an air cap for suctioning the upper and lower samples and sending pressure; 13 indicates a vacuum cap for creating a vacuum between the upper and lower sample fixing substrates; 1
Reference numeral 4 designates a pressure feeding cap for operating the vertical drive unit, reference numerals 15 and 16 indicate upper and lower samples, respectively, and reference numeral 17 indicates a timing sensor that operates when the upper and lower substrate shield rubbers come into contact with the lower sample fixing substrate.

Here, the press operation in the above configuration will be explained.

First, attach the upper sample 15 to the upper sample fixing board 1 by collecting it in the positioning bottle 9, and then attach the upper sample 1 to the upper sample fixing board 1 through the air nozzle 11.
A vacuum is created between the upper sample 15 and the upper sample fixing substrate 1.
to be fixed.

Similarly, the lower sample 16 is attached to the lower sample fixing substrate 6 along the positioning bin 10, and a vacuum is trapped between the lower sample 16 and the lower sample fixing substrate 6 via the air cap 12 to fix the lower sample 16. .

Here, the upper and lower sample shield packings 7.8 are made of a material that can withstand vacuum pressure, but in order to suppress deformation due to the degree of vacuum, the upper and lower sample fixing substrates 1 and 3 are A groove 18 is provided, into which a shield packing 7.8 is pushed.

Next, air is sent to the pressure feeding mouthpiece 14, and the vertical drive unit 5
The timing sensor 17 rises and the lower sample fixing board lowers.
come into contact with.

In this state, the upper and lower substrate shield rubbers 6 are fully in contact with the lower sample fixing substrate filter at corresponding locations.

When the lower sample fixing substrate 6 comes into contact with the timing sensor 17, the vacuum cap receives the on/off signal.
A vacuum is drawn between the upper sample 15 and the lower sample 16 through the filter 1.

Along with this, the upper sample 15,
The lower sample 16 is released from the adsorbed state, and air having atmospheric pressure or the like is sent in through the air nozzles 11 and 12 four times.

At this time, since pressure is applied to the vertical drive section 5 from below, no air leakage occurs from the upper and lower sample shield packings 7.8.

In this way, the back surface of the sample is released from the sample fixing substrate, that is, it floats, and a uniform pressure is applied to the back surface of the sample, and a pressure combined with the suction between the upper and lower samples 15.1<5 is applied to the sample. become.

Here, due to the cushioning effect of the air fluid, the sample is pressed uniformly following the bonding surface regardless of the sample precision.

Furthermore, if a cushioning effect is provided by air and fluid on the back surface of both the upper, lower and lower samples, the tilt adjustment angle of the sample bonding surface will be halved compared to when only one of the samples is provided with a cushioning effect by air and fluid. The burden on the fluid system can be reduced.

The air fed through the air nozzles 11 and 12 can be adjusted to any desired pressure, thereby making the press pressure variable.

FIG. 6 shows a different embodiment of the present invention, which has a positioning function. In this embodiment, the lower sample fixing substrate 3/ is separated from the upper and lower connecting shafts 2 and is used as an independent KX.

The table can be driven in Y, Z, and θ.

This lower sample fixing substrate 5' is provided with at least two observation holes 19, through which the alignment marks on the sample are read.

If the upper and lower samples 1'5 and 16 are made of transparent glass, positioning marks are provided on both, and the lower sample fixing substrate 6' is moved to observe and correct this positional shift.

The 190 observation holes are made of transparent material such as glass or acrylic.
Shielded with 0.

In addition, as a positioning observation system, for example, an optical fiber (-2
1 to the image pickup device 22 and which can be observed on a monitor. Note that the alignment observation system is not limited to this, and any other observation such as microscopic observation is possible.

According to this embodiment, alignment and uniform pressing of liquid crystal glass and the like can be performed using the same device.

Incidentally, although the above embodiments have been described using air as a fluid, any other fluid such as nitrogen gas can be used in addition to air.

As described above, the present invention has the following effects.

1. When pressing, a fluid is present, and its cushioning effect makes it possible to press the entire surface of the sample with uniform pressure without damaging the sample.

2. Also, the pressure can be changed by adjusting the flow rate, making it possible to control the pressure according to the purpose.

By using a shield rubber between the upper sample fixing substrate and the lower sample fixing substrate, the air used during pressing is drawn out through the vacuum nozzle and created in a vacuum, creating a cushion for the upper and lower samples. The air that was there is gone and it looks like a linking? MK becomes. This leads to an increase in press pressure.

By having a shield packing structure that shields the 4° sample, it is possible to switch between vacuum suction and fluid ejection in the same space.

5.Furthermore, due to the action of the shield barragin, no damage such as scratches or chips will occur on the back surface of the sample when the sample is pressed.

[Brief explanation of drawings]

Fig. 1 is a diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the shield packing structure, Fig. 6 is a diagram of an embodiment with an added alignment function (with 1 difference), and in the figure, 1 is an upper sample fixation. 2 is a substrate, 2 is a vertical connection shaft, 6 is a lower sample fixing substrate, 4 is a bearing, 5 is a vertical drive unit, 6
are the upper and lower substrate shield rubbers, 7 is the upper $1 shield packing, 8 is the lower sample sealing tube, 9 and 10 are the positioning bottles, 11.12 is the air cap, 13 is the vacuum cap, 14 is the pressure feeding cap, 15 is an upper sample, 16 is a lower sample, 17 is a timing sensor, 18 is a groove, 19 is an observation hole, 20 is a transparent body, 21 is an optical fiber.

Claims (1)

[Claims] 1. A pressing method for pressing a predetermined sample, characterized in that a fluid is caused to flow between the sample and a fixed substrate to release the sample from the fixed substrate before pressing. 2. The pressing method according to claim 1, wherein the first sample and the second sample are released from their respective fixed substrates and then pressed. 3. a first shield means for shielding between the back surface of the first sample and the sample fixing substrate; a second shield means for shielding between the back surface of the second sample and the sample fixing substrate; and a means for vacuum-shielding between the sample and the second sample, and a means for selectively vacuum suction or ejecting fluid into the closed space in which the first or second shielding means is provided. press equipment. 4. Said 1. The second shielding means is the first shielding means. The press device according to claim 6, which is pressed into the groove of the second sample fixing substrate. 5. 1st. The press apparatus according to claim 1, further comprising a detection means for detecting that the distance between the second sample fixing substrates becomes a predetermined distance, and switching from vacuum suction to fluid jetting according to the output of the detection means. 6. 1st. 7. A self-mounted press apparatus as claimed in claim 6, further comprising means for observing the relative alignment of the second sample. 7. A self-mounted press device, in which the first or second sample fixing substrate is translatable or rotatable.