JP2002370129A - Hose assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose assembling method capable of surely assembling a hose on a pipe even when the chamfer of the pipe is small, or the hose is bent and a position of a tip of the hose is instable. SOLUTION: A position separated from the tip by a predetermined distance, of the hose 1 is held by a chuck device 2, the tip part of the hose is coated with the liquid, the hose is pressed to the pipe upwardly at an angle of approximately 45 deg. from the axial direction of the pipe 3, then the hose is rotated to the axial direction of the pipe on a contact part of the hose and the pipe, when the tip of the hose is abutted on the pipe, and the hose is pressed to the pipe and slid in the opening and closing direction of the chuck device to assemble the hose on the pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a hose made of an elastic material such as a rubber hose to a pipe.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional method of assembling a hose is to apply water to the outer periphery of a pipe 3 or the inner surface of a hose 1 (see FIG. 1
Is coaxially held by the chuck device 2 (see FIG. 4B), and the hose 1 is guided by chamfering of the pipe 3 so that the hose 1 is connected to the pipe 3.
(See FIG. 4 (c)) while holding the hose.
The hose 1 was assembled to the pipe 3 by swinging the hose 6 (see FIG. 4 (c ′)). However, in this conventional assembling method, the chamfer is small depending on the thickness of the pipe 3, and the tip of the hose 1 bends ahead of the holding portion 26 of the hose, so that the position of the tip of the hose is not stable. 1 cannot be reliably inserted into the pipe 3.

A conventional chuck device 2 is shown in FIG.
As shown in (a) and (b), the hose holding portion 26
Is a flat surface provided with a flat surface 26A or a non-slip concave portion 26B. In the case of the chuck device 2, when the object is not deformed when chucked, or when the object is deformed and is merely transported, the object can be chucked and transported or assembled without any problem. However, when the rubber hose 1 is chucked, such as when the rubber hose 1 is attached to the pipe 3, the hose 1 is deformed,
Further, when a pressing force is applied to the hose 1 by the chuck device 2 for assembly, there is a problem in that the hose slides along the plane of the holding portion 26 and cannot be assembled.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to ensure that even if the pipe has a small chamfer and the hose bends and the position of the hose tip is not stable, the present invention is not limited to this. An object of the present invention is to provide a method of assembling a hose, which can attach a hose to a pipe. Another object is to provide a method of assembling a hose that can be deformed when chucked like a rubber hose and does not slip even when the chucked hose is assembled to a pipe as it is, and that can be pressed and assembled. is there.

[0005]

The present invention provides a method for assembling a hose according to the present invention as means for solving the above-mentioned problems. A method for assembling a hose according to claim 1, wherein the hose is sandwiched by a chuck device, a liquid is applied to a tip of the hose, and then the hose is pressed against the pipe from a position at a predetermined angle from the axial direction of the pipe. When the tip comes into contact with the pipe, the hose is turned around the contact portion between the hose and the pipe to the axial direction of the pipe, and the hose is pressed against the pipe and assembled. By pressing the hose against the pipe from a position at a predetermined angle from the axial direction of the pipe, the hose comes into contact with the corner of the pipe, so even if the chamfer of the pipe is small, the tip position of the hose is not stable. Even so, the corner of the pipe can be reliably picked up at the end of the hose. Then, by rotating the hose tip to the pipe axial direction while pressing the tip of the hose against the corner of the pipe, the tip of the hose can be reliably inserted into the tip of the pipe. Therefore, the hose can be securely attached to the pipe.

According to a second aspect of the present invention, the hose is pressed onto the pipe while swinging the hose in the opening / closing direction of the chuck device, and the hose is assembled to the pipe. The hose can be reliably pushed into the pipe. According to a third aspect of the present invention, the hose is pressed against the pipe from a position approximately 45 degrees upward from the axial direction of the pipe. The angle of about 45 degrees is a suitable angle for the hose end face to pick up the corner of the pipe.

According to a fourth aspect of the present invention, there is provided the assembling method, wherein a chuck device having a convex portion provided on a tip side of a contact portion of the holding portion for holding the hose with the hose is used.
Accordingly, since the holding force for chucking the hose is concentrated and the hose is held at the convex portion, the chuck can be reliably held without slipping even if a force parallel to the chuck surface acts while the hose is chucked. . 6. The assembling method according to claim 5, wherein a chuck device having a concave portion provided at a root side of a contact portion of the holding portion with the hose is used, and a convex portion on a distal end side of the contact portion with the hose. In addition to the above, by providing a concave portion on the base side, even when the hose comes into contact with a hose other than the convex portion, local contact becomes less likely to occur, and the hose can be securely held by the chuck.

According to a sixth aspect of the present invention, the shape of the convex portion on the distal end side of the contact portion with the hose is substantially semicircular, so that the hose can be held even with a large load. The hose can be securely held without scratching the surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for assembling a hose according to an embodiment of the present invention will be described below with reference to the drawings. FIG.
(A)-(d ') is a figure explaining the hose assembling method of this invention according to the procedure. In FIG.
Is a hose, 2 is a chuck device for chucking the hose 1, and 3 is a pipe to which the hose 1 is attached.

A hose 1 made of an elastic material such as rubber is held by a chuck device 2 at a position at a predetermined distance from the tip. The tip of the hose 1 is immersed in water as shown in FIG. 1A, and the tip of the hose is coated with water. Next, the hose 1 is moved to the position of the pipe 3 to be assembled while being chucked, and as shown in FIG. 1B, the hose 1 is tilted approximately 45 degrees upward with respect to the axial direction of the pipe 3 in the direction of arrow A. The hose 1 is pressed to the tip of the pipe 3 in a direction (approximately 45 degrees with respect to the axial direction of the pipe), and the hole of the hose 1
Pick up the corner of the tip of the. By picking up the corner of the pipe 3,
Since the chamfer of the pipe 3 is small, the tip of the hose 1 is bent and can be reliably picked up.

Next, while the hose 1 is pressed against the pipe 3, the hose 1 is rotated in the direction of arrow B (direction in which the axial directions of the hose and the pipe coincide with each other), and as shown in FIG. Axes are approximately aligned. Next, as shown in FIG. 1 (d), the hose 1 is pressed against the pipe 3 in the direction of arrow C (the axial direction of the pipe), and the chuck device 2 which holds the hose 1 as shown in FIG. 1 (d '). Then, the hose 1 is slightly swung in a direction perpendicular to the axial direction of the pipe, and the hose 1 is pressed against the pipe 3 and assembled. As described above, the swinging direction swings in a direction perpendicular to the opening and closing direction of the chuck device 2, so that the hose 1 is held by the chuck device 2 without slipping and assembled to the pipe 3.

FIG. 2 shows a chuck device 2 used in the hose assembling method of the present invention. Chuck device 2
Is basically composed of a base portion 22 serving as a base, a driving portion 23 for operating the chuck device 2, and a chuck portion 24 that is opened and closed by the driving portion 23 and chucks the hose 1. The chuck portion 24 urges the side that clamps the hose 1 and two chuck bodies 24a and 24b of the same shape that are rotatably connected at the center fulcrum, like a clothespin, to an open state. And a spring 25. The driving unit 23 includes a driving body 23a having a tip portion formed in an inverted truncated cone shape and operating in a vertical direction.
When a moves in the direction of arrow P (downward), its tip acts on one end of the chuck bodies 24a and 24b, and one end rotates in the direction of arrow Q (opening direction) against the spring 25, At the same time, the other ends of the chuck bodies 24a and 24b (the side that clamps the hose 1) are rotated in the direction of the arrow R (close direction) to clamp the hose 1. Conversely, when the driving body 23a moves upward, the other ends of the chuck bodies 24a and 24b
5, the hose 1 is turned in the opening direction to release the hose 1 from being pinched.

FIG. 3 shows a holding unit 2 at the other end of the chuck bodies 24a and 24b, which is a feature of the chuck device 2 of the present invention.
6 is a partially enlarged view showing the structure of FIG. At the tip side of the contact portion 26a that comes into contact with the hose 1 sandwiched by the holding portion 26, a convex portion 26b is provided so as to face the contact portion 26a.
A concave portion 26c is provided on the root side of a in the same manner. The shape of the convex portion 26b is, for example, substantially semicircular, and two concave portions 26c are provided in the example of FIG.

The operation of the chuck device 2 will be described. First, the chuck device 2 is moved and the chuck bodies 24a, 24
The hose 1 is positioned so as to come between the contact portions 26a of the holding portion 26 of b. Next, the driving unit 23 is operated to move the driving body 23a in the direction of the arrow P, so that the chuck bodies 24a, 24
b is rotated in the direction of arrow Q against the spring 25 so as to expand, so that the holding portion 26 at the other end of the chuck bodies 24a and 24b is rotated and closed in the direction of arrow R to close the contact portion. 2
The hose 1 is held by the chuck at 6a.

At this time, since the holding force is concentrated and held by the convex portion 26b provided on the tip end side of the contact portion 26a, the hose 1 is firmly held and the downward sliding in FIG. 3 can be prevented. . Further, a position deviated from the center of the hose 1 is held by a convex portion 26b provided on the tip side of the contact portion 26a,
In addition, the hose 1 is lightly held by the contact portion 26a by the concave portion 26c at the base side of the contact portion 26a, and the gap between the contact portions 26a is narrowed upward in FIG. Sliding up can be prevented. Thus, even if the hose 1 is chucked and a pressing force along the surface of the contact portion 26a is applied to the hose 1, the hose 1 can be prevented from slipping.

As described above, in the method for assembling a hose according to the present invention, the hose is securely assembled to the pipe even if the pipe has a small chamfer and the hose is bent and the position of the tip of the hose is not stable. can do. Also, like a hose made of an elastic material such as rubber, the hose is deformed when chucked, and even when the chucked hose is directly attached to the pipe, the hose does not slip, and the hose is pressed. Can be assembled to pipes.

[Brief description of the drawings]

FIGS. 1A to 1D are diagrams illustrating a method of assembling a hose according to an embodiment of the present invention along a procedure.

FIG. 2 is an overall configuration diagram of a chuck device used in the hose assembling method of the present invention.

FIG. 3 is a partially enlarged view of a holding unit of the chuck device of FIG. 2;

FIGS. 4A to 4C are diagrams illustrating a conventional hose assembling method along a procedure.

FIGS. 5A and 5B are partially enlarged views of a holding unit of a conventional chuck device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hose 2 ... Chuck device 3 ... Pipe 24 ... Chuck part 26 ... Holding part 26a ... Contact part 26b ... Convex part 26c ... Concave part

Claims (6)

[Claims] 1. A method of assembling a hose, wherein the hose is clamped at a predetermined distance from a tip of the hose with a chuck device, and a liquid is applied to the tip of the hose. Press the hose against the pipe from a position at a predetermined angle from the axial direction of the pipe, and when the end of the hose comes into contact with the pipe, rotate the hose around the contact point between the hose and the pipe in the axial direction of the pipe. A hose assembling method, wherein a hose is pressed onto a pipe and assembled. 2. The method for assembling a hose according to claim 2, wherein the hose is pressed against the pipe and assembled to the pipe while swinging the hose in the opening and closing direction of the chuck device. 3. The method for assembling a hose according to claim 1, wherein the predetermined angle is approximately 45 degrees upward. 4. The chuck device according to claim 1, wherein the chuck device has a convex portion on a tip side of a contact portion of the holding portion for holding the hose with the hose. Assembling method of the described hose. 5. The method for assembling a hose according to claim 4, wherein a concave portion is provided at a root side of a contact portion of the holding portion with the hose. 6. The method for assembling a hose according to claim 4, wherein the shape of the projection is substantially semicircular.