JPH11130453A - Formation of screw in glass product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to exactly form screws on the outer flank and inner flank of glass products by a simple method and to inexpensively suppress the cost. SOLUTION: The apparatus of this method has a pressing means for pressing the glass product 1 having a shape of a bar, pipe, etc., a rotational moving means for moving the glass product 1 pressed by the pressing means in a horizontal or perpendicular direction while rotating the product and a screw forming means for forming the screws on the outer flank or inner flank or both surface of the glass product 1 in the process of moving the glass product in the horizontal or perpendicular direction while rotating the glass product by the rotational moving means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a screw in a glass product, and more particularly, to a method for forming a screw in a glass product which can easily form a screw on an outer surface, an inner surface, or both surfaces of the glass product.

[0002]

2. Description of the Related Art When a screw is formed on an outer surface or an inner surface of a glass product having a rod shape or a pipe shape, conventionally, heat is applied to the glass product on average, and the glass product reaches a predetermined softness. At this time, a method of forming a screw by processing the outer surface or the inner surface, or an ultrasonic processing method of forming a screw by vigorously blowing sand on the outer surface or the inner surface of the glass product is known. .

[0003]

However, in the former method, it is difficult to accurately form a screw in the glass product, and at the same time, the crests and valleys of the formed screw are rounded. However, it was impossible to use such a glass product to ensure a secure screwing. In addition, the latter method has a problem in that it must be expensive in terms of cost.

[0004] The present invention solves the above-mentioned problems, and enables a screw to be accurately formed on the outer surface and the inner surface of a glass product by a particularly simple method, and the cost can be reduced at a low cost. An object of the present invention is to propose a method for forming a screw in a product.

[0005]

According to a first aspect of the present invention, there is provided a method of forming a screw in a glass product, comprising pressing a glass product having a rod-like or pipe-like shape. Holding means; rotating means for moving the glass product pressed by the holding means in the horizontal or vertical direction while rotating; and rotating or horizontally rotating the glass product by the rotating means. In the process of moving the glass product in the vertical direction, there is provided a screw forming means for contacting the outer surface or the inner surface or both surfaces of the glass product to form a screw on these surfaces.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show a method of forming a screw on the outer surface of a glass pipe (glass product) 1 by a method of forming a screw in a glass product according to the present invention. The pipe 1 is pressed on both sides by respective pressing means. In addition, the pipe 1 is not limited to a type, and may be, for example, ordinary glass or may be formed of Pyrex glass.

One of the pressing means for pressing both sides of the pipe 1 is formed by a pressing member 2 and a shaft member 3 fixed to the center of the outer surface of the pressing member 2, and the other is formed by the pressing member 2. And a so-called air cylinder structure formed by a piston rod 4 fixed to the center of the outer surface of the pressing member 2 and a cylinder 5 in which the piston rod 4 is housed. Since the structure of the air cylinder is well known in the art, a detailed description thereof will be omitted.

An air hose 6 for supplying air is attached to the tip of the cylinder 5.
The air hose 6 is structured so that the cylinder 5 does not rotate together with the cylinder when it rotates. In addition, the cylinder 5 and the shaft member 3 are supported by a rotational moving unit described later.

The rotating means has a moving member 8 having a concave shape when viewed from the front, and a rail on which the moving member 8 is movably mounted.
A drive unit comprising a rail 9, a base 10 to which the rail 9 is fixed, and a motor for moving the moving member 8 in a horizontal direction while rotating the shaft member 3 and the cylinder 5 of the pressing means. 11 mainly.

The shaft member 3 and the cylinder 5 are supported by bearings 7 in a circumferentially rotating state so as to be opposed to both side portions 8a of the moving member 8, and are provided at the leading end of the shaft member 3. The belt wheel 14 is fixed. Further, a rack 15 is fixed to a lower side surface near one longitudinal end of the moving member 8. The moving member 8 is movably mounted on a rail 9 arranged and fixed in the longitudinal direction of the upper center of the base 10.

A drive unit 11 using a motor as a drive source is provided on a side portion near one longitudinal end of the base 10, and an output shaft of the drive unit 11 is provided on a side portion of the base 10. One end of a rotating shaft 17 supported by the bearing member 16 is connected. A pinion 19 and a belt wheel 20 are fixed to the rotating shaft 17, and the pinion 19 is engaged with a rack 15, and the belt wheel 20 is linked to the belt wheel 14 via a belt 21.

The belt wheel 20 has a so-called ball spline structure that is provided so as to rotate with the rotation of the rotating shaft 17 and slide with respect to the rotating shaft 17. Also,
One of the bearings of the belt wheel 20 is rotatably supported by a connecting rod 23 fixed to a lower side surface near the other longitudinal end of the moving member 8.

Next, a screw forming means for forming a screw on the outer surface of the pipe 1 comprises a disk-shaped rotary blade 25 and a motor 26.
The rotary blade 25 and the motor 26 are attached at a predetermined interval to a front end portion of a side surface of a substrate 27 having a rectangular shape in plan view. The rotary blade 2
A belt wheel 30 is fixed to the rotation shaft 28 of the fifth wheel 5, and the belt wheel 30 is linked via a belt 31 to a belt wheel 32 fixed to the output shaft of the motor 26. Further, the rotary blade 25 has diamond particles embedded on both surfaces near the outer periphery.

The base of the substrate 27 is supported by a bracket member 35 having an L-shape in a side view so as to be vertically movable via a support shaft 36, and the substrate 27 is usually provided with a coil spring 38 disposed below the substrate. It is urged upward by resilience. The board 2 is provided on the upper part of the bracket member 35.
7 and a cam member 40 for lowering the substrate 27 against the urging force.
Numeral 0 is fixed to the output shaft of the motor 41 attached to the substrate 27.

The bracket member 35 is fixed to a base frame 43 provided near the base 10, and
The disk-shaped rotary blade 25 attached to the substrate 27 is provided so as to abut on the outer surface of the pipe 1 obliquely at a predetermined angle when is moved downward against the bias. .

According to the above configuration, in order to form a screw on the outer surface of the pipe 1, first, both ends 8a of the moving member 8 having a concave shape in a front view, which constitutes a rotary moving means, are provided at both ends of the pipe 1.
The moving member 8 is provided only by bringing the shaft member 3 of the pressing means rotatably supported via the bearing 7 into contact with the pressing member 2 provided on the cylinder 5 to supply air.
The pipe 1 can be easily and reliably pressed between both side portions 8a of the pipe.

Next, the base 10 is fixed to the rotary shaft 17 by controlling the operation of the drive unit 11 using a motor as a drive source provided on the side near one longitudinal end of the base 10 to rotate the rotary shaft 17. The pinion 19 also rotates, and this pinion 19
Is engaged with the rack 15 provided on the side surface of the moving member 8, so that the moving member 8 can move accurately on the rail 9 in the horizontal direction. The belt wheel 20 fixed to the rotating shaft 17 also rotates before and after this movement, so that the belt wheel 14 linked to the belt wheel 20 via the belt 21 rotates. The pipe 1 pressed by the attaching means can be rotated in the circumferential direction.

As described above, while the pipe 1 is moving and rotating, the motor 26 attached to the substrate 27 is controlled to rotate the disk-shaped rotary blade 25, while the screw forming means is rotated. The operation of the motor 41 is controlled and the cam member 4 is controlled.
By rotating the rotating blade 25 against the outer surface of the pipe 1 at a predetermined angle by rotating the substrate 27 downward against the urging by rotating the substrate 27, the screw 45 is screwed on the outer surface. It can be formed accurately.

In the above embodiment, the outer surface of the pipe 1 moving in the horizontal direction while rotating in the circumferential direction is provided on the outer surface.
A screw 45 is formed on the outer surface by bringing the rotating blade 25 having a disk shape and rotating into contact with the outer blade 25.
The present invention is not limited to this. For example, the pipe 1 only rotates in the circumferential direction, and the rotary blade 25 that contacts the outer surface of the pipe 1 and forms the screw 45 on this surface moves in the horizontal direction while rotating. May be formed.

Next, FIGS. 5 and 6 show a glass pipe (glass product) 1 according to a method of forming a screw in the glass product.
This shows a method of forming a screw on the inner side surface of the pipe. According to this method, one side of the pipe 1 is pressed by pressing means. The pressing means for pressing one side of the pipe 1 has a four-jaw chuck structure. The four-jaw 50 is movably attached to the chuck body 51, and the center of the back surface of the chuck body 51 is a shaft. Member 5
2 is fixed. The shaft member 52 is supported by a rotation moving unit described later. Since the chuck structure is conventionally used in a lathe or the like and is well known, a detailed description thereof will be omitted here.

The chuck structure is not limited to this. For example, a plurality of slits are provided in the longitudinal direction of a cylindrical member for pressing one side of the pipe 1, and one side of the pipe 1 is inserted into the cylindrical member. In the fitted state, an annular fastening member arranged on the outer periphery of the tubular member may be rotated and fixed.

The rotary moving means has a moving member 8 having an L shape in a front view, and a rail on which the moving member 8 is movably mounted.
Mainly by a rail 9, a base 10 to which the rail 9 is fixed, and a drive unit 11 composed of a motor for moving the moving member 8 in a horizontal direction while rotating the shaft member 52 of the pressing means. Is formed.

A shaft member 52 is supported on a side portion 8a of the moving member 8 in a circumferentially rotating state via a bearing 7, and a belt wheel 14 is fixed to a front portion of the shaft member 52. . A rack 15 is fixed to a lower side surface from one longitudinal end of the moving member 8. The moving member 8 is movably mounted on a rail 9 arranged and fixed in the longitudinal direction of the upper center of the base 10.

A drive unit 11 using a motor as a drive source is provided on a side portion near one longitudinal end of the base 10, and an output shaft of the drive unit 11 is provided on a side portion of the base 10. One end of a rotating shaft 17 supported by the bearing member 16 is connected. A pinion 19 and a belt wheel 20 are fixed to the rotating shaft 17, and the pinion 19 is engaged with a rack 15, and the belt wheel 20 and the belt wheel 14 are linked via a belt 21. .

The belt wheel 20 has a so-called ball spline structure provided so as to rotate with the rotation of the rotating shaft 17 and to slide with respect to the rotating shaft 17. Also,
One of the bearings of the belt wheel 20 is rotatably supported by a connecting rod 23 fixed to a lower side surface near the other longitudinal end of the moving member 8. Thereby, the belt wheel 20 can be slid quickly with the movement of the moving member 8.

Next, a screw forming means for forming a screw on the inner surface of the pipe 1 includes a rotating blade 25 having a disc shape and a motor 26.
And the rotary blade 25 is a slender, plate-shaped movable member 53 whose tip is bent obliquely downward.
Are pivotally supported via a support shaft 54 at the front end bent portion 53a. A bevel gear 55 is fixed to the support shaft 54 immediately. The motor 26 is mounted and supported on a mounting plate 57 fixed to an upper end of a bar member 56 erected above one longitudinal end of the base 10.

The movable member 53 has a shaft hole 59 provided at a portion slightly rearward from the center portion and a hollow support shaft 60 provided at an upper portion of the casing of the motor 26 so as to be undetachably fitted thereto. It is provided so as to be movable left and right around 60 as a fulcrum.
The front and rear portions of the movable member 53 are supported by bracket portions 57a and 57b of the mounting plate 57. Further, a flat bevel gear 61 meshed with a bevel gear 55 is supported on a flat portion near the bent end portion 53a of the movable member 53 via a support shaft 62. Is fixed to a belt wheel 63.

The output shaft of the motor 26 projects from a hollow support shaft 60, and a belt wheel 65 is fixed to the support shaft 60. The belt wheel 65 and the belt wheel 63 are linked via a belt 66.
Thus, by controlling the operation of the motor 26, the rotary blade 25 having a disk shape can be rotated.

Reference numeral 70 denotes a motor provided in parallel with the motor 26, and a cam member 71 is fixed to an output shaft of the motor 70. The cam member 71 is connected to the movable member 5.
3, the tip of the movable member 53 is brought close to the inner surface of the pipe 1 against the bias of the spring member 72 during rotation, and the rotary blade 25 is fixed to the inner surface of the pipe 1 at the time of rotation. It is provided so as to contact obliquely at an angle of. Reference numeral 73 denotes a stopper member for maintaining a certain state when the movable member 53 is urged.

According to the above configuration, in order to form a screw on the inner surface of the pipe 1, first, a simple operation of the four-jaw chuck 50 serving as a pressing means for pressing one side of the pipe 1 is performed. It can be securely pressed down.

Next, the drive unit 11 having a motor as a drive source provided at a side portion near one longitudinal end of the base 10 is operated to rotate the rotary shaft 17, thereby being fixed to the rotary shaft 17. The pinion 19 also rotates, and this pinion 19
Is engaged with the rack 15 provided on the side surface of the moving member 8, so that the moving member 8 can move accurately on the rail 9 in the horizontal direction. The belt wheel 20 fixed to the rotating shaft 17 also rotates before and after this movement, so that the belt wheel 14 linked to the belt wheel 20 via the belt 21 rotates. The pipe 1 pressed by the chuck of the attaching means can be rotated in the circumferential direction.

Then, while the pipe 1 is rotating while moving as described above, the motor 26 of the screw forming means mounted and supported on the mounting plate 57 is controlled to operate the bell and the vehicle 6.
The rotating blade 25 having a disc shape is rotated via the gears 3 and 65 and the bevel gears 55 and 61, while the operation of the motor 70 is controlled to rotate the cam member 71, and the movable member 53 is pressed against the urging force. 1, the rotating blade 25
Can contact the inner surface of the pipe 1 obliquely at a predetermined angle to form the screw 75 accurately on the inner surface.

In the above embodiment, the screw 75 is formed by bringing the rotating blade 25 having a disk shape into contact with the inner surface of the pipe 1 moving in the horizontal direction while rotating in the circumferential direction. It is formed, but is not limited to this. For example, the pipe 1 merely rotates in the circumferential direction,
May be formed so that the rotary blade 25 abutting on the inner side surface moves horizontally while rotating.

[0035]

As described above, according to the method for forming a screw in a glass product according to the present invention, the glass product having a rod-like or pipe-like shape pressed by the pressing means is rotated by the rotary moving means. In the process of moving the glass product in the horizontal or vertical direction, a screw is formed on the outer surface, inner surface or both surfaces of the glass product by a simple method of abutting the screw forming means on the outer surface or inner surface or both surfaces of the glass product. Can be formed accurately, and the cost can be reduced at a low cost.

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus used in a method for forming a screw in a glass product according to the present invention.

FIG. 2 is a side view of a main part of the device.

FIG. 3 is an explanatory diagram showing the contact and separation relationship between a rotary blade and a glass product;

FIG. 4 is a front view showing a state in which a screw is formed on the glass product.

FIG. 5 is a front view of another apparatus used in the method for forming a screw in the glass product.

FIG. 6 is an explanatory diagram showing a relationship between a movable member and a cam member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe 2 Pressing member 3 Shaft member 4 Piston rod 5 Cylinder-8 Moving member 10 Base 11 Drive part

Claims (1)

[Claims] 1. A pressing means for pressing a glass product having a rod-like or pipe-like shape, and a rotation for moving the glass product pressed by the pressing means in a horizontal or vertical direction while rotating the glass product. A moving means, and a screw which abuts an outer surface or an inner surface or both surfaces of the glass product to form a screw on these surfaces in a process of moving the glass product in a horizontal or vertical direction while rotating the glass product by the rotation moving means. And a forming means for forming a screw in a glass product.