JP3099199B2 - Flexible pipe assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling a flexible pipe, and more particularly, to an assembling method and an apparatus for a flexible pipe which can save manual labor which has conventionally been a heavy labor.

[0002]

2. Description of the Related Art Conventionally, in the case of a horizontally mounted engine having an FF layout or a midship arrangement, unlike a vertically mounted engine having an FR layout, it is necessary to absorb a snatch generated by a reaction of engine output at a front portion of an exhaust pipe. A pipe is used for a part of the exhaust pipe.

In this flexible pipe, as shown in FIG. 8, a net-like cylindrical body made by knitting a metal fiber called a braid is provided on a bellows-like flexible pipe called a bellows, and both ends are reduced. It is made by inserting a ring made of a metal plate called a protector near both ends and welding both ends.

However, before welding both ends, a step of reducing the diameter of the blade against the bellows at both ends and then inserting the protector while twisting as necessary was required.

In the past, this was done manually, but as the production speed increased, the labor became heavy, and even when the worker was unable to work continuously due to fatigue, the situation occurred. In addition, there is a problem in operation that the metal fibers constituting the blade are frayed at the end of the blade and are stuck in the hand and injured. The wrist is hurt because the protector is inserted while twisting. The extra length of the blade is long and wasteful. Even at the usual flexible pipe assembling speed, the protector must be inserted two per flexible pipe, so the operator has to repeat this work twice as much, which is a hard work. .

Therefore, in order to save labor and automate this process to release workers from heavy labor and to improve production capacity, a device called a "pipe forming device" was devised, and the applicant of the present application has already filed a utility model registration application. (Jpn.
490). The idea of this "pipe forming device" is to use a plurality of chucks, each of which has a substantially circular shape formed by its inner peripheral surface in a closed state, as a main part. It was an automated device that could not yet be assembled with a protector. Therefore, as a result of diligent research, the inventor of the present invention has completed an invention relating to a method and an apparatus for automatically assembling a protector in addition to a blade diameter reduction welding (drawing) process.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for automatically performing blade diameter reduction welding (drawing) at both ends of a flexible pipe and assembling a protector.

[0008]

According to the present invention, there is provided a method as set forth in claim 1, wherein the bellows, the blade , and the blade having the bellows inserted therein are inserted.
In a flexible pipe assembling apparatus comprising a pair of protectors inserted at both ends, a support base for holding a work in which a bellows is inserted into a blade, and a support base inserted into both ends of the bellows
The longitudinal axis of the work
A pair of piston-like head which can reciprocate in direction, of the work both
Substantially V-shaped cut placed at the end facing the workpiece radial direction
A pair of plate-like tools having a notch, wherein said substantially V-shaped tool is provided.
The notch of the blade is approached in opposition to sandwich the blade
Gradually reduce the diameter of the blade until it stops.
Form a hole with the outer diameter at both ends of the work
The punch to be formed and the work are
After positioning, the punch is connected in the radial direction of the workpiece.
Drive means for moving the blade closer and farther, the punch reducing the diameter of the blade
With the protector temporarily attached in advance
A pair of protector chuck to insert the click ends, the
The protector chuck independently of the piston-like head constitute an assembly device of a flexible pipe characterized by comprising a reciprocating rod to close axially spaced work
Was. Further, in claim 2, the both ends of the blade are reduced in diameter.
When inserting the time and / or the protector is characterized in that it comprises means which can be rotated workpiece and / or the piston-like head and / or the protector 請
A flexible pipe assembling apparatus according to claim 1 is constituted.
Was.

Hereinafter, the present invention will be described in detail with reference to examples.

[0010]

1 is a plan sectional view of a main part of the apparatus of the present invention, FIG. 2 is an enlarged cross-sectional view of a main part of FIG. 1, FIG. 3 is a view taken along the line AA of FIG. 1, and FIG. AA view of FIG. 1, FIG. 5 is B of FIG.
FIG. 6 is a plan view of the apparatus of the present invention, FIG. 7 is a front view of the apparatus of the present invention, and FIG. 8 is a cross-sectional view of the work.

First, in FIG. 8, 1 is a work, 3 is a bellows, 3A is a bellows end, 4 is a blade, and 4A is a blade end. The bellows 3 is formed by, for example, bulging a heat-resistant steel pipe (weld pipe) such as a Cr-Ni steel, and the blade 4 is a net-like pipe made by weaving similar heat-resistant steel fibers (fine wires). Body. The work 1 is obtained by inserting a bellows 3 cut to a required length into a blade 4.

Both ends are reduced in diameter by the method and apparatus of the present invention, and a deformed annular protector (made of a ferritic stainless steel sheet or a heat-resistant surface-treated steel sheet) to be described later is inserted from both sides. And MI
G welding is performed to obtain a flexible pipe as a product.

6, 7, 1, 2, and 3, 10 is a base frame, 11 is a stand frame, 12, 13, and 13, respectively.
14 is a hydraulic cylinder, 12A, 13A and 14A are piston rods of hydraulic cylinders 12, 13 and 14, respectively.
5 is a chuck support frame, and 19 is a sliding bearing.

Reference numeral 20 denotes a work support table, 21 denotes an upper cover of the work support table, 22 denotes a swing arm for the upper cover, 23 denotes a hydraulic cylinder for the upper cover, 23A denotes a piston rod for the upper cover, 24 denotes a swing arm fixed shaft support pin, 25 is a swinging arm moving supporting pin, 26 is a supporting pin for the fluid pressure cylinder 23, 27A is a piston rod for the J feeder, 28 is a fixed supporting pin for the J feeder, 29 is a moving supporting pin for the J-shaped feeder, 30 is J feeder, 3
Reference numerals 3 and 34 denote a fluid cylinder for moving the punch, and 33A and 34, respectively.
A is a piston rod thereof, 35 is a piston head, 40 is a protector chuck, 40A is a retractor protector chuck, 40B is a forward protector chuck, 41 is a magnet, 51 is a rail for punching, 53 and 54 are piston rods for punching. , 55, 56 are punches, 100
Is a protector.

1 and 7, the upper half shows a state in which the protector 100 is inserted by the chuck 40 until the punches 55 and 56 are stopped by the punches 55 and 56 where the diameter of the blade 1 is reduced. The lower half shows a state in which the chuck 40 has approached and the protector 100 has been inserted to the final position.

First, an apparatus according to an embodiment of the present invention will be described.

In FIGS. 6 and 7, fluid pressure cylinders 12, 13 and 14 are arranged substantially horizontally in parallel on stand frames 11 and 11 at both ends of a base frame 10, respectively. However, these hydraulic cylinders can also be arranged on a slope.

Each cylinder has a sliding linear bearing 1
Piston rods 12A, 13A, 14 through 9, 19
A is supported reciprocally in the horizontal direction.

The distal ends of the piston rods 12A and 14A are fixed to the left and right chuck support frames 15 so that they can be moved toward and away from the work support 20 at the same time.

Each of the piston rods 12A and 14A may be made of a single rigid rod on each of the left and right sides, or may be formed of three or four piston rods.

However, the center piston rods 13A, 13A
A has its tips fixed to the piston-like heads 35, 35, and moves independently of the other two, that is, four piston rods 12A, 14A. Can be approached and separated. FIG.
In FIGS. 7, 1, and 5, the work support base 20 is provided with an upper lid 21 that can be opened and closed by a fluid pressure cylinder 23. When the upper lid 21 is open, the work 1
0 and supplied. The J feeder 30 is a piston rod 27 of a hydraulic cylinder 27 (not shown).
By the reciprocation of A, it tilts around the pivot pin 28.
Since the processed work 1 is lifted by the J feeder, it can be easily taken out by a human hand.

On the annular working end of the protector chuck 40, about 2 to 8 permanent magnets are fitted or adhered along the circumference (an electromagnet may be used). Therefore, the protector 100 can be magnetically attached to the chuck 40 in advance. However, a vacuum sucker may be used instead of the magnet. This is effective when the protector material is not a ferromagnetic material.

The punching device is as shown in FIG. 3, and a pair of punches 55, 5
6 is the radial direction of the work 1 (piston rods 12A, 14A).
A at right angles). These movements take place from the hydraulic cylinders 33, 34 via their piston rods 53, 54 (see FIG. 6). When the pair of punches 55 and 56 are closest to each other, a punch shape and a stopper (not shown) on the rail 51 are formed and arranged in advance so that the outer diameter 1A of both ends of the work is exactly pinched and gripped.

FIG. 4 is a side view (along arrow AA) showing another embodiment of the punch. In FIG. 4, reference numeral 43 denotes a hydraulic cylinder, 43A denotes a piston rod, 60 denotes a pinion gear, and 61 and 62 denote racks.
It is connected to punches 55 and 56 via 66. In this embodiment, one hydraulic cylinder is sufficient to move the pair of punches close to and away from each other, and furthermore, there is an effect that the compression and compression diameters can be evenly distributed from both. In addition, a work can be rotated by disposing a drive roller or a drive belt on a part of the work support base 20.

Alternatively, the protector chuck 40 is pivotally mounted on the chuck support frame 15 and the ring gear around the outer periphery of the chuck 40 is driven by a pinion gear of a geared motor provided on the chuck support frame to rotate the chuck 40. It can also be done. Or a piston rod 13 connected to the protector chuck behind the fluid pressure cylinders 13, 13.
A, 13A can also be driven.

Alternatively, using the pressing force of the piston rods 12A and 14A, the stroke at both ends of the work is slightly reduced (for example, 1 mm) by the partial ring gear fixed to the chuck 40 engaged with the stationary gear on the base frame. / 5-1 /
(About 2 rotations). [Operation] The work support base upper lid 21 is opened, and the J feeder 30 is tilted upward.
When the work 1 is placed on the work support 1, the work 1 is displaced to the tip of the J feeder by its own weight, and the work 1 is supplied onto the work support base 20 by the downward inclination of the J feeder 30.

Then, the upper cover 21 is closed and two sets of punches 5
Punches 55, 56, 55 in which the protector chuck support frames 15, 15, which have been retracted by approaching and compressing the chucks 5, 56, are advanced from right and left, and the front end flanges of the protector 100 magnetically attached to the chuck 40 in advance are closed. , 56 until they come into contact with each other, and at the same time
35 is inserted into the inner diameter of the end of the work 1 to obtain the state shown in FIG.

Alternatively, first, after the support table upper lid 21 is closed,
The work 1 is positioned by approaching the piston-like heads 35, 35, and then the two sets of punches 55, 56 are pressed close to each other to reduce the diameter of the blade.

After that, first, the chuck 40 is slightly retracted, the magnet 41 is detached from the protector 100, and then the piston-like heads 35, 35 are retracted together with the chuck supporting frame 15 and are on standby.

Then, the work support base upper lid 21 is opened, the J-feeder 30 is tilted upward, and the assembled work is taken out.

What is important as the method of the present invention is that positioning is performed by a pair of piston-like heads 35, 35 which are inserted closely from both ends of the work along the axial direction of the work, and then both ends are squeezed and contracted by two pairs of punches. In this step, the protector 100 temporarily attached to the chuck in advance is inserted from both sides of the work. When the diameter is reduced, the work 1 or the chuck supporting frames 15, 15 and the piston-like heads 35, 35 are rotated to screw the protector 100 as necessary.

[0032]

By implementing the present invention, all of the above objects are achieved.

That is, it is possible to provide a method and an apparatus for automatically performing the blade diameter reduction pressure welding (drawing) processing on both ends of the flexible pipe and assembling the protector, and it is possible to relieve the operator from conventional heavy labor. This has the effect of improving the yield.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a main part of a device of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a view taken in the direction of arrows AA in FIG. 1;

FIG. 4 is a view of a punch according to another embodiment, taken along the line AA.

FIG. 5 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 6 is a plan view of the device of the present invention.

FIG. 7 is a front view of the device of the present invention.

FIG. 8 is a sectional view of a work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work 3 Bellows 4 Blade 20 Work support 21 Work support upper cover 12A Piston rod 13A Piston rod 14A Piston rod 35 Piston head 40 Protector chuck 55 Punch 56 Punch 60 Pinion gear 61 Rack 62 Rack 100 Protector

Claims (2)

(57) [Claims] 1. A bellows, a blade and the bellows are inserted.
In a flexible pipe assembling apparatus including a pair of protectors inserted into both ends of the blade, a support base for holding a work in which a bellows is inserted into a blade, and a work is positioned by being inserted into both ends of the bellows.
A pair of piston-like heads that can reciprocate in the longitudinal axis direction of the work, and are opposed to both ends of the work in the work radial direction.
Two pairs of plate-like tools having a substantially V-shaped notch
And approaching the substantially V-shaped notch in an opposing manner.
By gradually inserting the blade,
When the valve is reduced in diameter and approaches the stop position,
Punch forming a hole with outer diameter at both ends of workpiece
After being positioned by the piston head, the punch
And drive means to approach radially spaced workpiece, the
The punch is temporarily attached beforehand with the blade reduced in diameter.
A pair of protector chucks for inserting the protector from both ends of the work, and a reciprocating rod for allowing the protector chuck to approach and separate in the axial direction of the work independently of the piston-like head. Flexible pipe assembly equipment. 2. The device according to claim 1 , further comprising means for rotating the work and / or the piston-like head and / or the protector when reducing the diameter of both ends of the blade and / or inserting the protector. Flexible
Assembling equipment for shibble pipes.