JPH06143176A - Carrier - Google Patents

Abstract

(57) [Summary] [Purpose] The amount of deformation of the portion that is not adsorbed to the adsorption pad is reduced, and the object is conveyed without damaging it. [Structure] A pipe 22 for vacuum suction is inserted into the upper bottom portion of the concave portion 21 of the suction pad 17, and the four convex portions 2 are provided.
4 are provided around the pipe 22 at 90 ° intervals.
When the suction pad 17 sucks the mask 12 of the aperture grille, even if the mask 12 is sucked into the concave portion 21 and deformed, the deformed portion abuts the convex portion 24 and further deformation is prevented. Therefore, in the mask 12, the concave portion 21
The amount of deformation of the inner portion is small, and wrinkles do not occur on the mask 12 around the suction pad 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for transferring an object to be transferred in a state of being sucked by a suction pad.

[0002]

2. Description of the Related Art FIG. 3 shows an aperture grill as a color selection mechanism in a color cathode ray tube. The aperture grill 11 includes a mask 12, a frame 13 to which the mask 12 is attached, and a spring 1 for supporting the aperture grill 11 on a panel of a cathode ray tube.
4 and a holder 15 to which the spring 14 is attached and the like.

In order to assemble such an aperture grill 11, as shown in FIG. 4, the mask 12 is carried onto the frame 13 by the carrying device 16 and the mask 12 is welded to the frame 13. Therefore, the transfer device 16 has four to six suction pads 17 for vacuum-sucking the peripheral portion of the mask 12.

FIGS. 5 (a) and 5 (b) show a suction pad 17 in a conveying device 16 of a conventional example. The suction pad 17 has a cup shape with a diameter of about 20 mm and faces downward, and therefore has a recess 21 that opens downward. A pipe 22 for vacuum suction is inserted through the upper bottom of the recess 21.

[0005]

By the way, in order to increase the definition of the color cathode ray tube, the aperture grill 1 is used.
It is necessary to improve the processing accuracy of the slits formed in the first mask 12, but for that purpose, the plate thickness of the mask 12 is 5
It is necessary to reduce the thickness to 0 μm or less.

However, if the plate thickness of the mask 12 is reduced to reduce the rigidity in this way, as shown in FIG. 5C, when the mask 12 is sucked by the suction pad 17, the mask 12 is recessed.
A large amount is deformed by being sucked in. As a result, wrinkles 23 are generated on the mask 12 even around the suction pad 17.
In the aperture grill 11 using the mask 12 in which wrinkles 23 are generated in this manner, color selection cannot be performed with high definition.

[0007]

A transport device according to claim 1 is
In the transport device 16 having the suction pad 17 for sucking the transported object 12, the suction pad 17 has a concave portion 21 for suction, and the convex portion 24 is provided at the bottom of the concave portion 21.
Is provided.

According to a second aspect of the present invention, there is provided a carrier device 16 having a suction pad 17 for sucking the object to be transported 12, wherein the suction pad 17 has a concave portion 21 for suction. The suction pad 1 on the opening side
Frame body 2 having a front end portion 17a of No. 7 and a front end portion 25a flush with each other
5 are provided around the suction pad 17.

[0009]

In the carrying device 16 of the present invention, even if the object 12 is sucked into the concave portion 21 of the suction pad 17 and deformed,
This deformed portion abuts the convex portion 24 in the concave portion 21. Therefore, the amount of deformation of the portion of the transported object 12 in the concave portion 21 of the suction pad 17 is small, and the amount of deformation of the portion of the transported object 12 around the suction pad 17 is also small.

In the carrying device 16 of the second aspect, the object to be carried 1
Even if 2 is sucked into the concave portion 21 of the suction pad 17 and deformed, the portion of the transported object 12 around the suction pad 17 is pressed by the tip portion 25a of the frame body 25, and thus the surrounding portion. The amount of deformation is small.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first and second embodiments of the present invention applied to a carrying device for carrying a mask for an aperture grill in a color cathode ray tube will be described below with reference to FIGS. The components corresponding to those of the conventional example shown in FIG. 5 are designated by the same reference numerals.

FIG. 1 shows a suction pad 17 in the carrying device of the first embodiment. The transport apparatus of the first embodiment is different from the conventional example shown in FIG. 5 only in the structure of the suction pad 17. In addition, the suction pad 1 of the first embodiment
As shown in FIGS. 1 (a) and 1 (b), 7 has four columnar convex portions 24 each having a hemispherical tip portion at 90 ° intervals around the upper bottom pipe 22 in the concave portion 21. Except that it is provided, it has substantially the same configuration as the suction pad 17 in the transfer device of the conventional example shown in FIG.

When the mask 12 is sucked by the suction pad 17 in the transport apparatus of the first embodiment as described above, even if the mask 12 is sucked into the concave portion 21 and deformed as shown in FIG. The deformed portion contacts the convex portion 24 in the concave portion 21,
Further deformation is prevented. Therefore, the amount of deformation of the portion of the mask 12 inside the recess 21 is small, and wrinkles 23 do not occur in the mask 12 around the suction pad 17.

FIG. 2 shows the suction pad 17 in the carrying device of the second embodiment. In the transfer device of the second embodiment, the suction pad 17 itself has substantially the same structure as the suction pad 17 in the transfer device of the conventional example shown in FIG. 5, and suction on the opening side of the recess 21 is performed. It is different from the conventional example only in that a frame body 25 having a front end portion 17a of the pad 17 and a front end portion 25a flush with the suction pad 17 is provided.

When the mask 12 is sucked by the suction pad 17 in the transporting apparatus of the second embodiment as described above, even if the mask 12 is sucked into the concave portion 21 and deformed, the area around the suction pad 17 in the mask 12 is reduced. The part is the tip 25 of the frame 25
The mask 1 around the suction pad 17 is pressed by a.
No wrinkles 23 occur in 2.

The first and second embodiments described above apply the invention of the present application to a carrying device for carrying the mask of the aperture grill in the color cathode ray tube.
The invention of the present application can also be applied to a transfer device for transferring other objects to be transferred.

[0017]

In the carrying apparatus according to the invention of the present application, the amount of deformation of at least the portion of the transported object which is not sucked by the suction pad is small, so that the transported object can be transported without being damaged.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the invention of the present application, (a)
Is a partial sectional view, (b) is a bottom view, and (c) is a partial sectional view in use.

FIG. 2 is a partial cross-sectional view of a second embodiment in use.

FIG. 3 is a perspective view of an aperture grill in a color cathode ray tube.

FIG. 4 is a schematic perspective view of a carrying device to which the invention of the present application can be applied in use.

FIG. 5 shows a conventional example of the invention of the present application, in which (a) is a partial cross-sectional view, (b) is a bottom view, and (c) is a partial cross-sectional view in use.

[Explanation of symbols]

 12 Mask 16 Conveying Device 17 Suction Pad 17a Tip Part 21 Recess 24 Convex 25 Frame 25a Tip

Claims (2)

[Claims] 1. A transporting device having a suction pad for sucking an object to be transported, wherein the suction pad has a concave portion for suction, and a convex portion is provided at a bottom portion of the concave portion. And a carrier device. 2. A transporting device having a suction pad for sucking an object to be transported, wherein the suction pad has a concave portion for suction, and is flush with a tip end portion of the suction pad on the opening side of the concave portion. A transporting device, wherein a frame body having a front end portion of the suction pad is provided around the suction pad.