JP7199125B1 - electric flare machine - Google Patents

Abstract

An electric flaring machine is provided that further simplifies the process of flaring the end of a pipe and enables the piping work of an air conditioner to be completed in a shorter period of time.
A flaring machine 10 for flaring the end of a pipe P is provided. The flaring machine 10 is provided with a clamp device 20 for fixing the end of the pipe P. A fixing clip 30 is provided for mounting and fixing within the crimping portion 21 of the clamping device 20 . A fixed clip 30 is provided with an openable and closable fitting opening 31 that is clamped at the end of the pipe P. As shown in FIG. The fitting opening 31 is provided so as to be always widened. The crimping portion 21 of the clamping device 20 is made wide enough to open the fitting opening 31 . It is configured such that the end of the pipe P after flaring is extracted from the fitting opening 31 .
[Selection diagram] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric flaring machine used for piping work of an air conditioner, and more particularly to an electric flaring machine that performs flaring by fixing a pipe to a clamp device with a fixing clip clamped at the tip of the pipe.

The inventor of the present invention has previously proposed an electric flaring machine described in Patent Document 1. This processing machine consists of a flaring machine F that presses an eccentric cone 19 on the end of the pipe P to perform flaring, and a clamp that is integrally provided with this flaring machine F and fixes the pipe P to the position of the eccentric cone 19. It is composed of a device 6 and a female clip 2 (fixing clip 30 of the present invention) fixed to the clamping device 6 with the female clip sandwiched at the tip of the pipe.

The female clip 2 is provided with a clamping portion 2a that clamps the side surface of the pipe P by the pressing force of the spring 3a. be.

The opening end of the pipe P is provided so as to contact the eccentric cone 19 when the female clip 2 is crimped and fixed together with the pipe P between the holding portions 6a and 6b of the clamping device 6. As shown in FIG.

When flaring the end of the pipe P in this state, by operating the grips 6c and 6d of the clamp device 6, the pipe P is fixed together with the female clip 2, and the eccentric cone 19 of the flaring machine F reciprocates. As a result, a flare is formed at the end of the pipe P.

Japanese Patent No. 3951275

The method of using this flaring machine is to clip the female clip 2 to the end of the pipe P first. In this state, the female clip 2 together with the pipe P is attached and fixed to the clamping device 6 to perform flare processing. After flaring, the female clip 2 is removed from the clamping device 6, and then the female clip 2 is forcibly opened to remove the female clip 2 from the pipe P.

Thus, the following five steps are required to flare the pipe ends.
(1) The process of clamping the female clip 2 to the end of the pipe P (2) The process of fixing the female clip 2 together with the pipe P to the clamping device 6 (3) Fixing the female clip 2 to the pipe P Step of flaring (4) Step of removing the female clip 2 together with the pipe P from the clamp device 6 after flaring (5) Step of removing the female clip 2 from the removed pipe P

Due to these processes, the flaring machine of Cited Document 1 is remarkably easy to operate as compared with previous processing machines. Even so, five processes were required to flare the end of a single pipe.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electric flaring machine that further simplifies the process of flaring the ends of pipes, and that enables the piping work of air conditioners to be completed in a shorter period of time.

In order to achieve the above object, the first means of the present invention is to attach an eccentric cone 12 to the tip of a slider 11 that reciprocates while rotating, and use this eccentric cone 12 to flare the end of the pipe P. a processing machine 10, a clamping device 20 which is integrally provided with the flaring machine 10 and which is mounted in a crimping portion 21 to align and fix the end portion of the pipe P with the eccentric cone 12; and a fixed clip 30 which is fitted and fixed together with the pipe P in the crimping portion 21 of the clamp device 20 and has a fitting opening 31 which can be freely opened and closed. An expanding spring member 34 is provided to form a space for expanding the fitting opening 31 of the fixing clip 30 in the crimping portion 21 of the clamping device 20 , and to expand the flared end of the pipe P within the crimping portion 21 . It is that it is constructed so as to be pulled out from the fitting opening 31 that has been formed.

The fixing clip 30 of the second means includes a clamping portion 32 having the fitting opening 31 and clamping the side surface of the pipe P, the spring member 34 always urging the clamping portion 32 to expand, and the clamping portion 32. and an operating portion 33 extending from and provided to forcibly close the clamping portion 32 .

The fixing clip 30 of the third means is constructed such that the fitting opening 31 in the crimping portion 21 opens and closes together with the opening and closing of the crimping portion 21 .

According to the present invention, the process of flaring the pipe ends can be further simplified, and the piping work of the air conditioner can be completed in a shorter time.

FIG. 4 is a front view of attaching the fixing clip of the present invention to the clamping device; (a) to (c) are front views showing examples of operation of the fixing clip of the present invention. FIG. 4 is a rear view of the locking clip of the present invention in a closed state; FIG. 4 is a perspective view showing a state of inserting an end of a pipe into the present invention; FIG. 4 is a perspective view showing a state in which the end of a pipe is flared; FIG. 10 is a perspective view showing a state in which an end portion of a flared pipe is taken out; 1 is a longitudinal sectional view showing a flaring machine of the present invention; FIG. 1 is a cross-sectional view showing a flaring machine of the present invention; FIG. FIG. 3 is a cross-sectional view showing the inside of the gear case of the present invention;

The basic configuration of the flaring machine of the present invention comprises a flaring machine 10, a clamping device 20, and a fixing clip 30 (see FIG. 1). Then, the fixing clip 30 fitted to the tip of the pipe P is fixed by the clamp device 20, and the tip of the pipe P is flared (see FIG. 7).

The fixing clip 30 is a member that is detachably attached and fixed in the crimping portion 21 of the clamping device 20, and has an openable and closable fitting opening 31 fitted to the outer circumference of the end of the pipe P (see FIG. 2). ). A spring member 34 is provided so that the fitting opening 31 is always expanded (see FIG. 3). In the illustrated example, a fitting opening 31 is formed in a clamping portion 32 that clamps the side surface of the pipe P. The clamping portion 32 is a pair of parts that can swing freely to open and close via a connecting shaft 36 . A spring member 34 biasing the holding portion 32 to expand and an operation portion 33 extending from the holding portion 32 and provided to forcibly close the holding portion 32 are provided.

The operation part 33 is used when the operator operates to forcibly close the clamping part 32 (see FIG. 2). That is, the normal fixing clip 30 is in a state where the clamping portion 32 is opened by the elastic force of the spring member 34 (see FIG. 2(a)). When the holding portion 32 is gripped, the crimping portion 21 is closed (see FIG. 2(b)). When the clamping portion 32 is completely closed, the fitting opening 31 is formed and fitted to the outer periphery of the pipe P (see FIG. 2(c)).

When attaching the fixing clip 30 to the crimping portion 21 of the clamping device 20 , it is inserted into the crimping portion 21 of the clamping device 20 with the clamping portion 32 closed. After that, when the clamping portion 32 is released, the fixing clip 30 is mounted in a state in which the fitting opening 31 of the fixing clip 30 is expanded within the crimping portion 21 (see FIG. 7).

The clamping device 20 fixes the fixing clip 30 together with the end of the pipe P inserted into the fitting opening 31 . That is, when the fixing clip 30 is mounted in the crimping portion 21, the fitting opening 31 is opened and closed as the crimping portion 21 is opened and closed. The open fitting opening 31 allows the end of the pipe P after flaring to be pulled out (see FIG. 6).

On the other hand, the crimping portion 21 of the clamping device 20 has a sufficient space for the fitting opening 31 of the fixing clip 30 to expand and extract the end portion of the pipe P after flange processing (see FIG. 7). Therefore, after the end of the pipe P is inserted into the fitting opening 31 in the crimping portion 21 and flared, the end of the pipe P after flaring is removed from the fitting opening 31 in the crimping portion 21 . As a result, the pipes P having the same diameter can be flared one after another while the fixing clip 30 is attached to the crimping portion 21 of the clamping device 20 .

In this way, when flaring the pipe P with the processing machine of the present invention, the following steps are performed.
(1) A step of attaching a predetermined fixing clip 30 to the crimping portion 21 of the clamping device 20 (2) Inserting the end of the pipe P into the fitting opening 31 of the fixing clip 30 and fixing it with the crimping portion 21, (3) After flaring, open the crimping portion 21 and take out the flared end of the pipe P from the fitting opening 31.

Incidentally, the step (1) can be omitted from the next processing when the diameter of the pipe P to be processed is the same. Therefore, in order to sequentially flare the pipes P having the same diameter, the two steps (2) to (3) are repeated to sequentially process them. That is, by opening and closing the crimping portion 21 of the clamp device 20 and inserting and removing the end portion of the pipe P, flaring can be performed one after another.

Also, when the diameter of the pipe P is different, by attaching a fixing clip 30 having a fitting opening 31 adapted to the pipe P to the crimping portion 21, processing can be performed in the same manner. At this time, if a plurality of fitting openings 31 having different diameters are formed in one fixing clip 30, it is possible to use them properly according to the diameter of the pipe P (not shown).

The flaring machine 10 has an eccentric cone 12 attached to the tip of a slider 11 that reciprocates while rotating. The illustrated flaring machine 10 is provided with a slider 11 which can move back and forth through a worm gear 14 provided on the drive shaft of a motor 13 and a wheel gear 15 which perpendicularly transmits the rotation of the worm gear 14. An eccentric cone 12 is attached to the .

A worm gear 14, a wheel gear 15, and a slider 11 of the flaring machine 10 are housed inside a gear case 16 (see FIGS. 7 and 9). Furthermore, the flaring machine 10 is provided with a substantially box-shaped fixing jaw 17 on the advance side of the eccentric cone 12, which fixes one side of the crimping part 21 of the clamping device 20, which will be described later (see FIG. 7). ).

7 to 9 show cross-sectional views of the interior of the gear case 16. FIG. In these figures, when the start switch S1 is pressed, the motor 13 rotates, the worm gear 14 decelerates, and the rotation is transmitted in the perpendicular direction to rotate the wheel gear 15 (see FIG. 11). Rotation is transmitted to the slider 11 by a concavo-convex rotary connecting portion 18 in the wheel gear 15 (see FIG. 7).

A female screw 19A is provided inside the slider 11, and the slider 15 reciprocates while rotating inside the gear case 16 by the action of a male screw 19B fixed to the gear case 16 inside the slider 15, and the slider 11 moves forward. The provided eccentric cone 12 advances while being eccentric (see FIG. 8).

After flaring with the eccentric cone 12, the automatic control circuit that controls the load current of the motor sends a current of opposite polarity to reverse the motor 13, and when the eccentric cone 12 returns to its original position, it automatically stops and the power is turned off. .

The clamp device 20 is a device that is integrally provided with the flaring machine 10 and fixes the end of the pipe P to the position of the eccentric cone 12 (see FIG. 7). The clamp device 20 has a pair of crimping portions 21 and a lock mechanism (not shown) that locks the fixed state of the crimping portions 21 . The illustrated clamping device 20 is provided with a gripping portion 22 for operating a crimping portion 21 and a gripping cylinder 24 which is formed in a cylindrical shape and accommodates a motor 12 (see FIG. 1). A grip portion 22 is provided to the grip cylinder 24 so as to be openable and closable. The locking mechanism of the clamp device 20 is designed to operate when the grip portion 22 is closed and to be released when the grip portion 22 is opened.

A fixing clip 30 is inserted into the open crimping portion 21 of the clamping device 20 (see FIG. 1). At this time, the operator operates the operation part 33 to insert the fixing clip 30 into the crimping part 21 with the clamping part 32 closed, and when the operator releases the operation part 33, the clamping part 32 opens inside the crimping part 21. (See FIG. 4). Further, when the crimping portion 21 is closed with the end portion of the pipe P inserted into the fitting opening 31 of the holding portion 32, the pipe P is locked together with the fixing clip 30 (see FIG. 5). After the flare P1 is formed on the locked pipe P by the flare processing machine 10, the crimping portion 21 and the fitting opening 31 are opened and the pipe P is taken out (see FIG. 6).

The illustrated clamping device 20 is provided with a magnet 23 that magnetically attaches the fixing clip 30 (see FIG. 1). Then, when a fixing clip 30 fixed around the end of the pipe P is inserted into the opened crimping portion 21, the fixing clip 30 is magnetically attached to the inside of the crimping portion 21 so as to match the flare processing position. (See FIG. 7). Additionally, a position sensor (not shown) is provided within the crimp portion 21 to indicate when the securing clip 30 is in the flaring position. With this position sensor, when the fixed clip 30 is not in a fixed position, the start button S1 will not start. By providing the magnet 23 and the position sensor in this way, the fixing clip 30 can be reliably positioned, clamping errors can be prevented, and even an inexperienced worker can easily perform the operation.

It should be noted that each configuration of the illustrated example in the present invention is merely an embodiment of the present invention, and the flaring machine 10, the clamping device 20, the fixing clip 30, etc. may be changed in design, such as in shape and structure, and may be changed in material and mode of use. can be freely changed within the scope of not changing the gist of the present invention.

P Pipe P1 Flare S1 Start Switch 10 Flaring Machine 11 Slider 12 Eccentric Cone 13 Motor 14 Worm Gear 15 Wheel Gear 16 Gear Case 17 Fixed Jaw 18 Rotation Connection 19A Female Thread 19B Male Thread 20 Clamping Device 21 Crimping Part 22 Grip Part 23 Magnet 24 Grip cylinder 25 Battery 30 Fixing clip 31 Fitting opening 32 Holding part 33 Operating part 34 Spring member 35 Taper 36 Connecting shaft

Claims (3)

A flaring machine that attaches an eccentric cone to the tip of a slider that reciprocates while rotating and uses this eccentric cone to flare the end of a pipe;
a clamping device that is integrally provided with the flaring machine and that fixes the end of the pipe mounted in the crimping portion in alignment with the position of the eccentric cone;
An electric flaring machine comprising: a fixing clip which has an openable and closable fitting opening fitted to the outer circumference of the end of the pipe and is fixedly mounted together with the pipe in the crimping portion of the clamping device,
The fixed clip is provided with a spring member that always expands the fitting opening,
A space is formed in the crimping part of the clamping device to expand the fitting opening of the fixing clip,
1. An electric flaring machine characterized in that it is constructed such that an end of a pipe that has been flared is extracted from a fitting opening that is widened in a crimping section. The fixing clip includes a clamping portion having the fitting opening and clamping the side surface of the pipe, the spring member always biasing the clamping portion to expand, and an extended portion extending from the clamping portion so as to forcibly close the clamping portion. 2. The electric flaring machine according to claim 1, further comprising an operation section provided. 2. The electric flaring machine according to claim 1, wherein said fixed clip is configured such that said fitting opening in said crimping portion opens and closes together with opening and closing of said crimping portion.

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