JP3661910B2 - Glass product reference leveling device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a glass product reference leveling device for generating a reference level for glass products such as TV cathode ray tubes and panels such as CRTs and funnels.
[0002]
[Prior art]
The process of manufacturing a panel or funnel such as a TV CRT or CRT includes a process of measuring the shape and dimensions of the panel or funnel and welding a stud pin or an anode button at an accurate position. For this reason, conventionally, the reference surface is provided by a reference surface output device.
[0003]
Japanese Patent Publication No. 47-8260 as a reference surface-exposure device has four support members for supporting a panel, and a pair of support members located diagonally can be moved up and down by a floating mechanism. I support it. In the floating mechanism, an arm connecting a pair of support members is formed in a U shape and protrudes to the side, and the center portion of the arm is supported by a bearing and the rotational force is offset by a balance weight. ing.
[0004]
On the other hand, the reference leveling device disclosed in Japanese Patent Publication No. 49-38739 has four support members for supporting the panel, and of these, a pair of diagonally-supported support members are supported by a spring so as to be movable up and down. doing.
[0005]
[Problems to be solved by the invention]
However, the reference surface aligning device disclosed in Japanese Examined Patent Publication No. 47-8260 has a drawback in that the entire device becomes large because the arm connecting the pair of support members projects sideways.
Further, the floating mechanism of the reference surface exposing device is configured such that the support member is attached to a swing arm that swingably supports the support member by a bearing, and is slidably guided by the lifting guide in this state. There is a disadvantage that the rocking resistance is large, and therefore, in the case of a lightweight glass product, it may not be rocked and may not be used.
[0006]
In addition, since the reference surface aligning device disclosed in Japanese Patent Publication No. 49-38739 supports a pair of support members by springs, if the spring constant of the spring is large, the lightweight glass product may not move downward. There are disadvantages that cannot be used.
The present invention has been made in view of such circumstances, and a glass product reference leveling device capable of downsizing the apparatus by downsizing the floating mechanism of the support member that supports the glass product so as to be movable up and down is provided. The purpose is to provide.
[0007]
[Means for solving the problems]
In order to achieve the above object, the present invention has four support members that support a glass product and project a reference surface of the glass product, and at least a pair of support members in diagonal positions among the four support members. In the reference surface leveling apparatus for glass products, wherein the floating mechanism includes a long plate provided between support members of the pair of support members, and the plate in the longitudinal direction. A swing support means for swingably supporting a center axis, a roller provided at a lower portion of the pair of support members and abutted at a position offset from a longitudinal center axis of the plate; A balance weight member that is provided on the plate and applies a reverse rotational force to the plate so as to cancel the rotational force generated on the plate by the weight of the support member having the roller. It is a symptom.
[0008]
According to the first aspect of the present invention, when the glass product is placed on the pair of support members that are movable up and down by the floating mechanism, the pair of support members starts to move downward due to the weight of the glass product. At the same time, the glass product is tilted around a diagonal line connecting the pair of support members and comes into contact with one support member of the pair of support members on the fixed side. Then, when the glass product comes into contact with the remaining support member on the fixed side by the continuous downward movement of the glass product, the glass product is supported at four points and the reference plane is brought out.
[0009]
In the floating mechanism of the present invention, a roller is provided at the lower part of a pair of support members that move up and down, and this roller is in a rolling contact with the plate supported by the swing support means, so that the floating mechanism becomes compact. The device is downsized.
Further, according to the floating mechanism, when the weight of the glass product is applied to the pair of support members, the roller pushes the plate and descends while rolling on the plate. At this time, since the support member and the plate are merely in contact with each other and are not connected to each other, the support member moves up and down along the lifting guide even if the plate swings, and any lateral force is applied to the guide portion. Don't give. As a result, the pair of support members smoothly move downward. When the glass product is removed from the four support members after the reference surface of the glass product is finished, the plate swings in the reverse direction by the balance weight member and returns to the original position. At this time, the roller is pushed by the plate and moves up while rolling on the plate, so that the pair of support members moves up and down smoothly.
[0010]
According to a second aspect of the present invention, the plate is swingably supported by a knife edge member. In this way, when the plate is supported by the knife edge member, compared to a device that supports with a bearing as in Japanese Patent Publication No. 47-8260, or a device that supports with a spring as in Japanese Patent Publication No. 49-38739, The swing resistance can be greatly reduced. Therefore, the present invention can be used even with a light glass product as compared with a conventional reference surface-exposure device.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a glass product reference leveling device according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a top view of a glass product reference leveling apparatus according to an embodiment of the present invention, and FIG. 2 is a side view of the reference leveling apparatus as viewed from the direction of arrow A in FIG.
[0012]
The reference surface drawing device 10 shown in these drawings is a device for drawing a reference surface from the inner surface of the TV cathode ray tube panel 12 indicated by a two-dot chain line in the drawing, and the welding position of the stud pin provided on the inner surface of the panel 12 It is applied as a device for positioning.
The reference surface aligning device 10 mainly includes a pair of fixing pins (support members) 14 and 14 and a pair of floating pins (support members) 16 and 16 that are in contact with the inner surface of the panel 12. 14 and 14 are erected on the substrate 18, and the floating pins 16 and 16 are provided on the substrate 18 via the floating mechanism 20.
[0013]
FIG. 3 is a perspective view showing a state in which the floating pins 16 are supported by the floating mechanism 20 so as to be movable up and down, and FIG. 4 is a perspective view showing a main part of the floating mechanism 20.
As shown in FIG. 3, the floating mechanism 20 mainly includes a plate 22, a swing support portion 24, a roller 26, and a balance weight 28. The plate 22 is formed in a long shape and is provided between a pair of floating pins 16 and 16, and both end portions thereof are supported by a swing support portion 24 so as to be swingable. The illustrated plate 22 has a uniform plate shape as a whole. However, if the contact portion of the roller 26 is a flat surface, the shape of other portions can be freely changed.
[0014]
As shown in FIGS. 3 and 4, the swing support portion 24 includes a semi-cylindrical receiving member 30 fixed to the end portion of the plate 22 and a support member 32 having a tip 32A formed in a knife edge shape. Composed. An arcuate groove 30 </ b> A is formed on the lower surface of the receiving member 30. The groove 30 </ b> A is formed on an extension of the longitudinal center axis 23 of the plate 22, and the groove 30 </ b> A is placed on the distal end portion 32 </ b> A of the support member 32. Thus, the plate 22 is swingable about the longitudinal central axis 23 with the tip 32A of the support member 32 as a fulcrum, ie, with the knife edge as a fulcrum. Reference numeral 34 denotes a block for fixing the support member 32 to the substrate 18.
[0015]
The roller 26 is rotatably provided on a bifurcated member 36 provided below the floating pins 16 and 16 via a shaft 38. Further, as shown in FIG. 4, the roller 26 is in contact with the longitudinal center axis 23 of the plate 22 so as to roll freely at a position offset to one side.
The balance weight 28 is attached to the side surface of the plate 22 via a length adjusting bar 40. The bar 40 is screwed and connected to the plate 22, and the distance of the balance weight 28 relative to the plate 22 can be adjusted by rotating. Thereby, the magnitude of the rotational moment applied to the plate 22 by the balance weight 28 can be adjusted. In the present embodiment, the rotational moment is set to be slightly larger than the magnitude that cancels the rotational force generated on the plate 22 by the weight of the floating pin 16 and the roller 26. This balance weight can be replaced by a spring or the like that can adjust the spring force.
[0016]
In FIG. 3, the floating pin 16 is supported by a linear motion guide 42 and a ball spline 44 having a small frictional resistance so as to be movable up and down. Thereby, the floating pin 16 can be moved up and down only by a small force. The linear motion guide 42 and the ball spline 44 are fixed to a column 46 erected on the substrate 18.
[0017]
Next, the operation of the reference leveling device 10 configured as described above will be described.
First, when the inner surface of the panel 12 is placed on the floating pins 16, 16, the floating pins 16, 16 begin to move downward due to the weight of the panel 12. At the same time, the panel 12 tilts around a diagonal line connecting the floating pins 16 and 16 and abuts against one of the fixed pins 14 and 14. When the panel 12 comes into contact with the remaining fixing pins 14 of the fixing pins 14 and 14 by the continued downward movement of the panel 12, the panel 12 is supported at four points and the reference plane is projected.
[0018]
By the way, the floating mechanism 20 of the present embodiment is provided with rollers 26 and 26 below the floating pins 16 and 16, and the rollers 26 and 26 are attached to the plate 22 supported at both ends by the swing support portions 24 and 24. The mechanism is a rolling contact. Therefore, in this embodiment, since the floating mechanism 20 does not protrude to the side of the apparatus and becomes compact, the entire reference surface exposing apparatus 10 is downsized.
[0019]
Further, according to the floating mechanism 20, when the weight of the panel 12 is applied to the floating pins 16 and 16, the rollers 26 and 26 push down the plate 22 while rolling on the plate 22, so as described above. The floating pins 16, 16 move downward smoothly.
When the panel 12 is removed from the four pins 14, 14, 16, 16 after the reference surface of the panel 12 is finished, the plate 22 is swung by the balance weights 28, 28 to return to the original position. At this time, the rollers 26 and 26 are pushed by the plate 22 and are raised while rolling on the plate 22, so that the floating pins 16 and 16 are smoothly moved upward. Therefore, the reference surface exposing device 10 of the present embodiment can smoothly move the floating pins 16, 16, while in the present embodiment, the plate 22 can be swung by the knife edge of the support member 32. I support it. In this way, when the plate 22 is supported by a knife edge, it is compared with a device that is supported by a bearing as in Japanese Patent Publication No. 47-8260 and a device that is supported by a spring as in Japanese Patent Publication No. 49-38739. Thus, the rocking resistance of the plate 22 can be greatly reduced. Therefore, the reference leveling device 10 of the present embodiment can be used with a lighter panel 12 as compared with the conventional reference leveling device.
[0020]
In the present embodiment, the reference leveling device 10 applied to the panel 12 has been described. However, the reference leveling device 10 can also be applied to a reference surface leveling device applied to a funnel. It can be used as a reference leveling device during processing. Further, in the illustrated support member, the tip has a spherical shape so as to make a reference surface from the inner surface of the panel, but this tip shape can be changed depending on where the reference is made on the product. For example, when a reference is made by supporting an end face of a panel or the like, a bar-like one having an elongated support surface is preferable to the spherical one.
[0021]
In this embodiment, the pair of pins 16, 16 are floated among the four pins 14, 14, 16, 16. However, all four pins 14, 14, 16, 16 may be floated. good.
[0022]
【The invention's effect】
As described above, according to the reference surface alignment apparatus for glass products according to the present invention, a roller is provided at the lower part of a pair of support members that move up and down, and this roller is in contact with the plate supported by the swing support means. Since the floating mechanism is configured, the floating mechanism becomes compact and the apparatus can be miniaturized. Further, the pair of support members can be smoothly moved up and down.
[0023]
Furthermore, the present invention greatly reduces the rocking resistance of the plate by supporting the plate by the knife edge member so as to be rockable, so that it can be used even with a light glass product.
[Brief description of the drawings]
FIG. 1 is a top view of a glass product reference leveling apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the glass product reference leveling apparatus shown in FIG. FIG. 4 is a perspective view of a main part of a glass product reference leveling device. FIG. 4 is a perspective view of a main part showing a floating mechanism of the glass product reference leveling device of FIG.
DESCRIPTION OF SYMBOLS 10 ... Reference | standard surface alignment apparatus 12 ... Panel for TV cathode-ray tube 14 ... Fixed pin 16 ... Floating pin 20 ... Floating mechanism 22 ... Plate 24 ... Swing support part 26 ... Roller 28 ... Balance weight 32 ... Support member

Claims (2)

A glass having four support members for supporting a glass product and projecting a reference surface of the glass product, and at least a pair of support members at diagonal positions among the four support members are provided so as to be vertically movable by a floating mechanism In the reference leveling device for products,
The floating mechanism is
An elongated plate provided between the support members of the pair of support members;
Swing support means for swingably supporting the plate about a central axis in the longitudinal direction;
A roller provided at a lower portion of the pair of support members and abutted at a position offset from a longitudinal central axis of the plate;
A balance weight member that is provided on the plate and applies a reverse rotational force to the plate so as to cancel the rotational force generated on the plate by the weight of the support member having the roller;
A glass surface reference leveling device comprising: 2. A glass surface reference leveling device according to claim 1, wherein said swing support means is a knife edge member.

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