TW201330165A - A surface plate unit - Google Patents

Abstract

The invention provides for a surface plate unit capable of locating a glass panel being heat treated on a ceramic surface plate through metal pins and capable of producing easily and in a low cost. A surface plate unit includes a ceramic surface plate 3 on which a glass plate 2 being heat treated is placed, a plurality of loosen holes 4 penetrating the surface plate vertically, the loosen holes being arranged at positions where a periphery of the glass plate is located, a plurality of metal pins 5 loosely inserted into the loosen holes respectively, and connecting members 6 connecting each of two adjacent pins on the surface plate so as to maintain a protruding condition that the pins protrude over the surface plate from the loosen holes.

Description

Fixed disk unit

The present invention relates to a fixed disk unit which can be manufactured at a simple and low cost, and which is positioned with respect to a ceramic fixed disk using a metal positioning pin for the heat-treated glass substrate.

In the prior art, as a technique for positioning and holding a workpiece, for example, Patent Documents 1 to 3 are known. The "lifting device for a workpiece" of Patent Document 1 is a lifting plate for lifting a workpiece with respect to a workpiece that adsorbs and holds a thin plate shape and performs a predetermined process on the workpiece, and includes a lifting device for lifting the workpiece. The lift pin and the cylinder for lifting and lowering the lift pin set the force of pushing the workpiece above the lift pin to less than 10 times the weight of the workpiece.

The "substrate holder" of Patent Document 2 includes a substrate supporting member on which a peripheral portion of a transparent rectangular glass substrate is placed, and an opening for transmitting illumination is formed, and a contact pin and a pressing pin surround the opening. Provided on the substrate supporting member and positioning the glass substrate; the elongated supporting plate is disposed to traverse the opening, and protrudes from the glass substrate placed on the substrate supporting member a support pin supported on the back surface; and a lifting device provided on the substrate supporting member to raise the support plate and abut the support pin against the back surface of the glass substrate to support the glass substrate, and simultaneously support the support Board produces a drop Separating the support pin from the back surface of the glass substrate to release the support of the glass substrate; and the lifting device is configured to raise the support plate after the glass substrate is positioned on the substrate supporting member, and support the support pin The above glass substrate.

In the method of manufacturing a locator glass, a locating pin, and a plasma display panel of Patent Document 3, the locator glass is used for heat treatment of a glass substrate and is transported in a heat treatment furnace while a glass substrate is placed thereon. A pin attaching portion to which a positioning pin is attached is formed at a plurality of locations on the outer periphery of the substrate mounting region on which the glass substrate is placed.

Patent Document 1 includes a device that adsorbs and holds a workpiece on a flat plate. Patent Document 2 includes a device that adsorbs and holds a glass substrate on a substrate holder and sandwiches the pin and the abutment pin. In the heat treatment of the thin-plate glass substrate, the glass substrate is placed on a ceramic locator (tray) having excellent heat resistance, so that the glass substrate on the locator does not move during transportation. A positioning pin is disposed on the positioner. The positioning pins are fitted to the positioner or screwed together.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2002-313893

[Patent Document 2] Japanese Patent No. 3636235

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2005-174669

A display panel or a touch panel such as a liquid crystal is thinned year by year, and the glass substrate which becomes a base material is also thin, and handling at the time of manufacture becomes difficult. Since high precision is required for processing the glass substrate, it is preferable to carry it in a state of being positioned on the fixed disk when the glass substrate is subjected to heat treatment.

In this case, as the fixed disk unit, if the ceramic having excellent heat resistance is used for the fixed disk and the positioning pin, the cost is high. Further, when a low-priced metal positioning pin is fitted to a ceramic fixing plate or screwed by a screw, there is a possibility that the ceramic fixing plate is damaged due to a difference in thermal expansion coefficient between the ceramic and the metal. Therefore, there is a need for a fixed-disc unit that positions the heat-treated glass substrate and maintains it at a low price.

The present invention has been made in view of the above problems, and an object of the invention is to provide a fixed disk unit which can be manufactured at a simple and low cost, and which uses a metal positioning pin with respect to a ceramic fixed disk. The glass substrate to be heat treated is positioned.

The fixed disk unit according to the present invention is characterized in that it comprises: a ceramic fixing plate on which a heat-treated glass substrate is placed; and a plurality of loose holes which are arranged on the fixed disk at a position for positioning the glass substrate, and a plurality of metal positioning pins are loosely inserted into the loose holes; and a connecting member connects the positioning pins to the fixing plate to maintain the positioning pin from the loose hole The protruding state on the fixed disk.

The connecting member is characterized in that the positioning pins are arranged such that the corner portions of the glass substrate are positioned to avoid the corner portions and the corner portions are sandwiched.

The connecting member is characterized in that it has a locking portion that is locked with respect to the positioning pin at a position where the positioning pin is blocked from the glass substrate.

In the fixed disk unit of the present invention, the positioning pin has a lateral through hole through which the connecting member is loosely inserted, and the locking portion of the connecting member is formed from the lateral through hole along the positioning pin. The outer peripheral portion is formed by bending a bent portion for restricting the interference with the glass substrate, and the connecting member is in contact with the positioning pin in response to rotation of the connecting member in the lateral through hole.

The fixed disk unit of the present invention can be manufactured in a simple and low-cost manner, and is positioned with respect to the ceramic fixed disk using a metal positioning pin for the heat-treated glass substrate.

Hereinafter, preferred embodiments of the fixed disk unit related to the present invention will be described in detail with reference to the accompanying drawings. The fixed disk unit 1 of the first embodiment is shown in Fig. 1 . The fixed disk unit 1 according to the present embodiment is used, for example, when the thin plate-shaped glass substrate 2 having a thickness of approximately 1 mm or less for a portable communication device is subjected to heat treatment, and the glass substrate 2 is positioned. It is placed on the fixed plate 3 and transported to the heating furnace. In the present embodiment, the fixed disk unit 1 on which the rectangular glass substrate 2 is placed will be described as an example.

As shown in FIG. 1, the fixed disk unit 1 includes a ceramic fixed disk 3 on which a heat-treated glass substrate 2 is placed, and a plurality of loose holes 4 which are arranged on the fixed disk 3 to position the glass substrate 2. a plurality of metal positioning pins 5 that are loosely inserted into the inner sides of the plurality of loose holes 4, and a coupling member 6 that connects the positioning pins 5 to each other on the fixed disk 3, The positioning pin 5 that is inserted into the loose hole 4 is in a state of being protruded from the loose hole 4 toward the fixed disk 3.

As shown in FIG. 1, the ceramic fixing plate 3 has a larger area than the glass substrate 2 placed thereon. On the fixed disk 3, eight loose holes 4 are arranged at positions where the glass substrate 2 is positioned so as to surround the mounting region R on which the glass substrate 2 is placed and placed. In order to position the four corner portions 2a of the glass substrate 2, eight loose holes 4 are provided at two positions sandwiching the four corner portions 2a.

The positioning pin 5 constituting the fixed disk unit 1 is shown in FIG. The upper portion of the positioning pin 5 is formed in a truncated cone shape. The lower portion of the positioning pin 5 is formed in a cylindrical shape having the same diameter as the bottom surface of the upper truncated cone. Hereinafter, a portion in which a truncated cone shape is formed will be referred to as a pin upper portion 5a, and a portion in which a columnar shape is formed will be referred to as a pin lower portion 5b.

The pin upper portion 5a is formed such that the diameter of the lower end thereof is smaller than the diameter of the loose hole 4 provided in the fixed disk 3. The pin upper portion 5a is formed such that the diameter of the horizontal cross section becomes smaller from the lower end toward the upper end. Therefore, the diameter of the lower end of the pin upper portion 5a of the positioning pin 5 and the diameter of the pin lower portion 5b are set to the maximum outer diameter. The maximum outer diameter is set to be smaller than the diameter of the loose hole 4.

A lateral through hole 7 is formed in the positioning pin 5, and the lateral through hole 7 is located in the pin lower portion 5b and penetrates in the diameter direction of the positioning pin 5. The connecting member 6 is inserted into the lateral through hole 7 . The diameter of the lateral through hole 7 is formed to be much smaller than the maximum outer diameter of the positioning pin 5.

Since the fixed disk unit 1 according to the first embodiment is used for heat treatment, the difference in thermal expansion ratio between the ceramic fixed disk 3 in which the loose hole 4 is formed and the metal positioning pin 5 inserted into the loose hole 4 is considered. The inner diameter of the loose hole 4 is formed to be much larger than the outer diameter of the positioning pin 5 in such a manner that the positioning pin 5 which is thermally expanded by the heat treatment does not cause damage to the fixed disk 3. Therefore, if only the positioning pin 5 is inserted into the loose hole 4, the protruding state of the positioning pin 5 from the loose hole 4 to the fixed disk 3 cannot be maintained. Therefore, in the fixed disk unit 1 according to the present embodiment, the connecting member 6 that connects the positioning pins 5 to the fixed disk 3 is provided.

The connecting member 6 is, for example, a metal wire formed by a diameter which is smaller than the diameter of the lateral through hole 7 provided in the positioning pin 5. Therefore, the connecting member 6 is loosely inserted into the lateral through hole 7 .

FIG. 3 shows a state in which the corner portion 2a of the glass substrate 2 is positioned. The connecting member 6 penetrates the lateral through hole 7 of the positioning pin 5, and the positioning pin 5 is inserted into the eight loose holes 4 provided in the fixed disk 3 to position the corner portions 2a of the glass substrate 2 to clamp the corner portion 2a. The two loose holes 4 are arranged, and the connecting member 6 connects the two positioning pins 5 to each other avoiding the corner portion 2a.

In other words, the connecting member 6 is a pair of positioning pins 5 that are arranged to avoid the corner portion 2a and connect the nip corner portion 2a so as to be in contact with the both sides 2b and 2c of the glass substrate 2 forming the corner portion 2a. Therefore, the length of the connecting member 6 is set to a length protruding from each of the positioning pins 5 after being bent at a substantially right angle. By the formation of the bent portion 6a, the joint member 6 can be prevented from coming off from the positioning pin 5.

When the glass substrate 2 is placed on the fixed disk unit 1, eight positioning pins 5 are used. First, each of the two positioning pins 5 is coupled by the connecting member 6. At this time, the end portion of the connecting member 6 is caused to protrude from the lateral through hole 7 of each of the positioning pins 5. Further, the connecting member 6 is bent at a substantially right angle by, for example, the bent portion 6a so as to avoid the corner portion 2a.

Next, the positional relationship between the corner portions 2a of the glass substrate 2 sandwiched between the eight loose holes 4 provided in the fixed disk 3 is two loose holes 4, and the two positions connected by the connecting member 6 are adjusted. The distance between the pins 5. Then, the positioning pins 5 are inserted into the two loose holes 4, respectively. At this time, the connecting member 6 between the positioning pins 5 is placed on the fixed disk 3, and the positioning pin 5 is held from the loose hole 4 to the fixed disk 3.

Thereafter, the glass substrate 2 is carried into the upper surface of the fixed disk 3 and placed on the mounting region R. At this time, since the pin upper portion 5a of each of the positioning pins 5 is formed in a truncated cone shape, the glass substrate 2 can be easily and smoothly positioned and placed in the placement region R by the inclination of the pin upper portion 5a.

According to the fixed disk unit 1 according to the first embodiment, the positioning pin 5 for positioning the glass substrate 2 on the fixed disk 3 is inserted into the two fixed members by the connecting member 6. The lateral through hole 7 of the pin 5 is connected and inserted into the loose hole 4 provided in the fixed disk 3 and held in a protruding state from the loose hole 4 to the fixed disk 3.

Thereby, a state in which the positioning pin 5 is protruded to the fixed disk 3 can be maintained without providing a stopper or the like on the positioning pin 5 itself. Therefore, the loose hole 4 is provided only on the fixed disk 3, so that complicated processing of the fixed disk 3 is not required. Since the positioning pin 5 and the connecting member 6 have a simple shape, they can be easily processed.

Since the positioning pin 5 is only loosely inserted into the loose hole 4 without being pressed or the like, a strain-stable gap can be provided between the loose hole 4 and the positioning pin 5. Thereby, in the fixed disk unit 1 for heat treatment, even if the thermal expansion coefficients of the positioning pin 5 and the fixed disk 3 are different, there is no adverse effect, and it is not necessary to form the positioning pin 5 with expensive ceramic. Therefore, the material cost and the processing cost can be suppressed, so that the fixed disk unit 1 can be manufactured at a low price.

Since the connecting member 6 is inserted through the lateral through-holes 7 of the two positioning pins 5 to connect the positioning pins 5, the connecting member 6 does not fall off from the positioning pin 5 in a state where the positioning pin 5 is inserted into the loose hole 4. . Only by connecting the connecting member 6 to the lateral through-holes 7 in this manner, the positioning pins 5 can be coupled to each other, so that excellent workability and productivity can be ensured.

Here, the connecting member 6 that connects the two positioning pins 5 that are disposed to sandwich the respective corner portions 2a of the glass substrate 2 is not necessarily required to be bent at a substantially right angle, and the positioning pin is penetrated at least by avoiding the corner portion 2a. The two positioning pins 5 may be connected to each other by the lateral through holes 7 of the five.

When the positioning pin 5 having a different coefficient of thermal expansion is held by the fixing plate 3 without using the connecting member 6, the diameter of the lower end of the pin upper portion 5a of the positioning pin 5 is larger than the diameter of the pin lower portion 5b, etc., so that the positioning is performed. The method in which the pin 5 does not fall from the loose hole 4, but since the glass substrate 2 is thin and the positioning pin 5 is light, it is conceivable that when the glass substrate 2 is placed on the fixed disk unit 1 and transported, Due to the vibration, the glass substrate 2 is drilled and clamped between the pin upper portion 5a and the fixed disk 3 as in the portion A of FIG. As a result, when the glass substrate 2 is lifted, the edge of the glass substrate 2 is caught by the positioning pin 5 to damage the glass substrate 2.

On the other hand, since the fixed disk 3 and the positioning pin 5 of the fixed disk unit 1 according to the present embodiment do not exist at the same place where the upper and lower sides overlap, it is possible to prevent the positioning pin 5 from catching the glass substrate 2 or the like and causing damage to the glass substrate. 2 situation.

When the positioning pin 5 is attached to the fixed disk 3, since the positioning pin 5 is inserted into the loose hole 4 only from the upper side of the fixed disk 3, the positioning pin 5 can be provided only from the upper work with respect to the fixed disk 3. In other words, since the positioning pin 5 is fixed by using the screw and the nut from the lower surface side of the fixed disk 3, it is possible to easily work in a short time.

Moreover, when the fixed disk 3 is stained, the positioning pin 5 and the connecting member 6 can be easily removed for cleaning, or the positioning pins 5 and the like can be replaced. Thereby, excellent workability and maintainability can be ensured, and the fixed disk unit 1 which is low in price and high in productivity can be produced.

The fixed disk unit 1 according to the second embodiment is shown in Fig. 4 . In the first embodiment, the case where the positioning pins 5 arranged to sandwich the corner portions 2a of the glass substrate 2 are connected to each other is described. However, in the fixed disk unit 1 of the second embodiment, The positioning pins 5 arranged along the respective sides of the glass substrate 2 are coupled to each other to maintain the protruding state of the positioning pins 5 from the loose holes 4 to the fixed disk 3.

The fixed disk 3 and the positioning pin 5 constituting the fixed disk unit 1 according to the second embodiment are the same as those of the fixed disk unit 1 of the first embodiment. In the second embodiment, the connecting member 6 is formed in a substantially linear shape, and penetrates the positioning pin 5 in this state.

The connecting member 6 used in the second embodiment is also the same as the connecting member 6 of the first embodiment, and is made of a metal wire having a diameter smaller than the diameter of the lateral through hole 7 of the positioning pin 5, and is loose. Ground through. The length of the connecting member 6 is set such that the connecting member 6 can penetrate through the positioning pin 5 and the ends thereof are protruded, and the positioning pin 5 is inserted into the eight loose holes 4 provided on the fixed disk 3. Two loose holes 4 are arranged along each side of the positioned glass substrate 2.

FIG. 5 shows a state in which the positioning pin 5 coupled by the joint member 6 is inserted into the loose hole 4 of the fixed disk 3. The connecting member 6 is provided to penetrate the horizontal through-hole 7 such as the positioning pin 5, and the end portion of the connecting member 6 protrudes from the lateral through-hole 7 (refer to FIG. 4), and the positioning pin 5 is used for the glass substrate 2 Placed before the fixed disk unit 1 and inserted until the glass substrate 2 is positioned A loose hole 4 is formed at a position along each side of the glass substrate 2.

Since the connecting member 6 is formed in a substantially linear shape, the horizontal through-holes 7 of the two positioning pins 5 are easily detached. In the fixed disk unit 1 according to the second embodiment, the connecting member 6 that penetrates the two positioning pins 5 is formed with a locking portion 6b that is locked to each of the positioning pins 5.

Specifically, two loose holes 4 are arranged in parallel with each side of the glass substrate 2 to adjust the distance between the two positioning pins 5 through which the connecting member 6 passes, and then the positioning pin 5 is inserted. Loose hole 4.

Then, as shown in FIG. 5, the end portions of the connecting member 6 from which the positioning pin 5 protrudes are folded back, and the connecting member 6 is locked to the positioning pin, so that the two positioning pins 5 are not detached from the connecting member 6. 5 card stop 6b. In other words, the bent portion which is bent at the end of the connecting member 6 which protrudes from the lateral through hole 7 of the positioning pin 5 along the outer circumference of the positioning pin 5 is formed as the locking portion 6b.

Fig. 6 shows a locking portion 6b formed by the end portion of the connecting member 6 which is folded back through the positioning pin 5, and Fig. 6(a) is a plan view thereof, and Fig. 6(b) is a longitudinal sectional view thereof. The locking portion 6b of the connecting member 6 is folded back from the glass substrate 2 by the positioning pin 5 when the positioning pin 5 is inserted into the loose hole 4 as shown in FIG. 6(a). That is, the two locking portions 6b are folded back toward the same side with respect to the positioning pin 5 so as to be positioned on the opposite side of the mounting region R on which the glass substrate 2 is placed.

Further, as shown in FIG. 6(b), the distance between the inner edge of the locking portion 6b and the axial center of the portion penetrated by the positioning pin 5 is small as shown in FIG. 6(b). The positioning pin 5 is set such that the height of the positioning pin 5 from the fixed disk 3 to the upper portion (generally the pin upper portion 5a) is h.

In consideration of the vibration of the connecting member 6 due to the vibration or the like when the fixed disk unit 1 is transported, the connecting member 6 rotates in the lateral through hole 7 to cause the locking portion 6b to abut against the positioning. Since the pin 5 is not moved over the positioning pin R over the positioning pin 5, the locking portion 6b of the connecting member 6 restricts the interference between the locking portion 6b and the glass substrate 2, thereby preventing the glass substrate 2 from being damaged.

The connecting member 6 according to the second embodiment is prevented from falling off from the positioning pin 5 by the locking portion 6b being locked to the positioning pin 5, so that the protruding state of the positioning pin 5 can be stably maintained by a simple operation.

In particular, in the fixed disk unit 1 of the second embodiment, the locking portion 6b of the connecting member 6 is used as a bent portion that is folded back along the outer circumference of the positioning pin 5, and the locking portion 6b is self-contained by the positioning pin 5. The position where the glass substrate 2 is blocked is locked to the positioning pin 5, and even if the connecting member 6 rotates in the lateral through hole 7, the locking portion 6b abuts against the positioning pin 5 and does not face the glass substrate 2 side. Since the movement is caused, it is possible to restrict the interference between the locking portion 6b and the glass substrate 2, and it is possible to surely prevent the damage caused by the connecting member 6 of the glass substrate 2 placed on the fixed disk unit 1.

In the above embodiment, the shape of the glass substrate 2 is a rectangle, but the shape is not limited thereto. Moreover, in the above embodiment, the case where the lateral through hole 7 of the positioning pin 5 is provided in the pin lower portion 5b has been described, but It can also be placed on the pin upper portion 5a. The connecting member 6 may be not only a wire but also various other forms such as a tape.

The corner portion 2a of the connecting member 6 avoiding the glass substrate 2 means that it does not contact or interfere with each other, and is not limited to bending in the sense, and may of course be in other aspects. Of course, the locking portion 6b is not limited to the curved portion, and may be in the form of a hook or the like.

Of course, even in the second embodiment, the same operational effects as those in the first embodiment are exhibited. Further, of course, the locking portion 6b may be formed in the coupling member 6 of the first embodiment.

1‧‧‧ Fixed disk unit

2‧‧‧ glass substrate

2a‧‧‧ corner of glass substrate

2b, 2c‧‧‧ the side of the glass substrate

3‧‧‧ Fixed disk

4‧‧‧ pine hole

5‧‧‧Locating pin

5a‧‧‧ Pin upper

5b‧‧‧pin lower

6‧‧‧Connected components

6a‧‧‧Bends

6b‧‧‧Cards

7‧‧‧Horizontal through hole

R‧‧‧Loading area

h‧‧‧The height of the locating pin from the position where the fixing plate protrudes upward

r‧‧‧The distance between the locking part and the part that penetrates the positioning pin

Fig. 1 is an explanatory view showing a configuration of a first embodiment of a fixed disk unit according to the present invention.

Figure 2 is a perspective view of a locating pin suitable for use in the fixed disk unit shown in Figure 1.

Fig. 3 is a perspective view of the fixed disk unit of Fig. 1 and showing a state in which a corner portion of the glass substrate is positioned.

Fig. 4 is an explanatory view showing the configuration of a second embodiment of the fixed disk unit according to the present invention.

Fig. 5 is a perspective view showing the fixed disk unit shown in Fig. 4 and showing a state in which the connecting member is passed through the positioning pin.

6(a) and 6(b) are explanatory views for explaining a locking portion of the connecting member shown in Fig. 5.

Fig. 7 is an explanatory diagram for explaining the troubles assumed.

2‧‧‧ glass substrate

3‧‧‧ Fixed disk

4‧‧‧ pine hole

5‧‧‧Locating pin

5a‧‧‧ Pin upper

5b‧‧‧pin lower

6‧‧‧Connected components

6b‧‧‧Cards

7‧‧‧Horizontal through hole

Claims (4)

A fixed disk unit, comprising: a ceramic fixed disk on which a heat-treated glass substrate is placed; and a plurality of loose holes arranged on the fixed disk at a position for positioning the glass substrate and penetrating in the up and down direction Forming a plurality of metal locating pins that are loosely inserted into the loose holes; and a connecting member that connects the locating pins to each other on the fixed disk to hold the locating pin from the loose hole toward the fixed disk Prominent state. The fixed disk unit according to the first aspect of the invention, wherein the connecting member is configured such that the corner portion of the glass substrate is positioned to avoid the corner portion, and the positioning pins that are arranged to sandwich the corner portion are connected to each other. The fixed disk unit according to claim 1 or 2, wherein the connecting member has a locking portion that is locked with respect to the positioning pin at a position where the positioning pin is blocked from the glass substrate. The fixed disk unit of claim 3, wherein the positioning pin has a lateral through hole through which the connecting member is loosely inserted, and the locking portion of the connecting member is formed from the lateral through hole The locating pin is formed by a bent portion which is folded back in the outer periphery, and the bent portion is in contact with the locating pin in response to the connection member being rotated in the lateral through hole in order to restrict interference with the glass substrate.