JP7152095B1 - electric flare processing 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 body 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 body 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 (corresponding to the fixing clip 30 of the present invention) fixed to the clamp 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.

On the other hand, Patent Document 2 describes an electric flaring tool that uses a dice 7 that is split in two in order to cope with the case where pipes to be flared have different diameters.

In this electric flare tool, a plurality of holes with different diameters are formed along the longitudinal direction of the die 7 which is divided into two parts, and by selecting these holes, the diameter of the pipe can be accommodated.

Japanese Patent No. 3951275 JP-A-2005-324208

In the method of using the flaring machine described in Patent Document 1, the female clip 2 is clamped 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 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) A process of clamping the female clip 2 to the end of the pipe P (2) A process of fixing the female clip 2 together with the sandwiched pipe P to the clamping device 6 (3) The pipe with the female clip 2 fixed Step of flaring P (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

By using the female clip 2, the flaring machine of Cited Document 1 is remarkably easy to operate as compared with the flaring machine that does not use it. Even so, five processes were required to flare the end of a single pipe.

In addition, in order to deal with pipes P having different diameters with the flaring machine of Patent Document 1, several types of female clips 2 are formed in accordance with the pipes P, and the process ( 1) Select female clip 2. Therefore, it is necessary to form many female clips 2 in advance according to the types of pipe P diameters.

On the other hand, in the electric flaring tool of Patent Document 2, the die 7 is split in two in order to clamp and fix the end of the tube 8 to be flared. A plurality of holes with different diameters are provided in series along the longitudinal direction of the die 7, and the die 7 is fixed by tightening it with a toggle lever 70 in a state in which the tube 8 to be processed is passed through the holes with a suitable diameter. .

Therefore, the following process is required in the cited document 2 for flaring.
(1) A process of slidingly inserting the die 7 into one end of the processing system housing 13 (2) A process of inserting the tube 8 to be processed into the processing system housing 13 and passing it through a hole of a suitable diameter in the die 7 (3) Inserting the die 7 (4) Flaring the end of the tube 8 to be processed (5) Loosening the tube 8 to be processed by the toggle lever 70 (6) Die Process of removing pipe 8 to be processed from 7 As described above, the electric flare tool of Cited Document 2 requires 6 processes.

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 to flare the end of a pipe P fixed by this eccentric cone 12. The flaring machine 10 to be processed and the end of the pipe P, which is provided integrally with the flaring machine 10 and clamped by the fixing clip 30 by operating the grip part 22, is aligned with the position of the eccentric cone 12 and inserted into the crimping body 21. A clamping device 20 for crimping and fixing, and a plurality of fitting openings 31 having different diameters to be fitted to the outer periphery of the end of the pipe P are mounted in a crimping body 21 of the clamping device 20 . and a fixing clip 30 to which the end of the inner pipe P is fixed. A space for expanding is formed in the crimping body 21, and the flared end of the pipe P is pulled out from the fitting opening 31 expanded in the crimping body 21.例文帳に追加

The fixing clip 30 of the second means comprises a pair of clamping portions 32 swinging freely to open and close via a connecting shaft 37, the spring member 34 always urging the clamping portions 32 to expand, and the connecting shaft 37. and an operating portion 33 provided to forcibly close the holding portion 32 by extending from the holding portion 32 through the opening of the holding portion 32. A pair of alignment portions 36 are formed on both outer side surfaces of the clamping portion 32 for each fitting opening 31, and each fitting opening 31 is aligned with the position of the eccentric cone 12 by the alignment portions 36. ing.

The crimping body 21 of the clamping device 20 of the third means includes a fixing portion 21A for fixing one of the holding portions 32 of the fixed clip 30 and a swingable crimping portion engaged with the other holding portion 32. The crimping portion 21B is arranged so as to face the portion 21B, and the tip of the crimping portion 21B rocked by the operation of the grip portion 22 engages the alignment portion 36 of the holding portion 32 on the rocking side to engage the fitting opening. The pipe P in 31 is crimped and fixed.

The fourth means is to provide the fixing portion 21A with a center support portion 21Aa that engages with the positioning portion 36 of the fixing clip 30, and to adjust the center position of the fitting opening 31 selected by the center support portion 21Aa. It is configured to match the center position of the eccentric cone 12 .

The flaring machine 10 of the fifth means is provided with an adjusting screw 11A for pressing the rear end of the slider 11 to adjust the projecting position of the eccentric cone 12. As shown in FIG.

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; It is a vertical cross-sectional view showing a side surface of the flaring machine of the present invention. It is a front view which shows the state which opened the crimping|compression-bonding part of this invention. (a) to (c) are front views showing movements of the crimping portion and the fitting opening. 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;

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 tip of the pipe P is fixed to a fixing clip 30 mounted in the clamp device 20, and the tip of the pipe P is flared (see FIG. 5).

The flaring machine 10 is a mechanism that attaches an eccentric cone 12 to the tip of a slider 11 that reciprocates while rotating, and uses this eccentric cone 12 to form a flare P1 on the end of a pipe P (see FIG. 7).

The clamping device 20 is a device integrally provided with the flaring machine 10. By operating the grip portion 22, the end portion of the pipe P is aligned with the position of the eccentric cone 12 and crimped and fixed in the crimping body 21 (see FIG. 8). ). A space for expanding the fitting opening 31 is formed in the crimping body 21 (see FIG. 7). Therefore, the end portion of the flared pipe P can be pulled out from the fitting opening 31 expanded in the crimping body 21 (see FIG. 6).

The fixing clip 30 is a member to be mounted inside the crimping body 21 of the clamping device 20, and has a plurality of fitting openings 31 with different diameters that are fitted to the outer circumferences of the end portions of the plurality of pipes P (Fig. 2 (I ) to (C)).

The illustrated fixing clip 30 includes a holding portion 32, an operating portion 33, and a spring member 34 (see FIG. 3). That is, the fixing clip 30 is provided with a spring member 34 that always widens the fitting opening 31 . Then, when the grip portion 22 of the clamp device 20 is operated to crimp the fixing clip 30 in the crimping body 21, the end portion of the pipe P is fitted and fixed in the fitting opening 31 (see FIG. 5).

The clamping portion 32 is a pair of portions that have a fitting opening 31 and swing openably and closably through a connecting shaft 37 (see FIG. 2). On the other hand, the operation part 33 is provided so as to forcibly close the clamping part 32 by extending from the clamping part 32 via the connecting shaft 37 (see FIGS. 2B and 2C). Since the spring member 34 always urges the holding portion 32 to expand, the fitting opening 31 opens when the operating portion 33 is released (see FIG. 2(a)).

In the illustrated example, the two fitting openings 31 are continuously provided along the longitudinal direction of the opening 32A of the holding portion 32 (see FIG. 2(a)). Further, two pairs of alignment portions 36 are formed on both outer side surfaces of the clamping portion 32 and used to align the fitting openings 31 with the positions of the eccentric cones 12 (see FIG. 2(C)). .

The operation part 33 is used when the operator operates to forcibly close the clamping part 32 when the fixing clip 30 is mounted in the crimping body 21 of the clamp device 20 (FIGS. 2B and 2C). reference). When the holding portion 32 is inserted into the crimping body 21 of the clamping device 20 and the holding portion 32 is released, the fitting opening 31 is opened in the crimping body 21 (see FIG. 7). ).

Furthermore, when the end of the pipe P is inserted into the fitting opening 31 of the fixing clip 30 in the crimping body 21 and the grip part 22 is operated, the clamping part 32 is crimped and fixed in the crimping body 21 together with the pipe P (FIG. 7). reference).

That is, when the clamping portion 32 of the fixing clip 30 is mounted in the crimping body 21, the fitting opening 31 is opened and closed as the crimping body 21 is opened and closed (FIGS. 9A to 9C). reference). Since the fitting opening 31 is opened widely by the spring member 34, the end of the pipe P having the flare P1 processed can be extracted from the crimping body 21 (see FIG. 6).

A plurality of pairs of alignment portions 36 are formed on the outer surface of the holding portion 32 to align the fitting openings 31 with the positions of the eccentric cones 12 (see FIG. 3). On the other hand, the fixed portion 21A of the clamp device 20 is provided with a center support portion 21Aa that engages with the selected alignment portion 36 (see FIG. 8). The illustrated center support portion 21Aa is formed in a pin shape, and the alignment portion 36 is formed in a concave shape (see FIG. 9). Note that these shapes can be arbitrarily changed, such as reversing the unevenness.

When the selected alignment portion 36 is engaged with the position of the center support portion 21Aa, the center position of the fitting opening 31 is aligned with the center position of the eccentric cone 12 (FIGS. 9A to 9C). (C)). Furthermore, when the tip of the crimping portion 21B is swung by the operation of the grip portion 22, the crimping portion 21B engages with the positioning portion 36 of the clamping portion 32 to crimp the clamping portion 32 (see FIG. 9C). As a result, the pipe P in the fitting opening 31 is crimped and fixed together with the holding portion 32 (see FIG. 5).

The illustrated crimping body 21 has a fixing portion 21A that fixes one of the clamping portions 32 and a swingable crimping portion 21B that engages with the other swinging clamping portion 32 (see FIG. 8). ). One fixed portion 21A is a member fixed in a straight line. The other crimping portion 21B is a member that swings freely to open and close, and is provided via a connecting body 23 that interlocks with the grip portion 22 (see FIGS. 9A to 9C).

FIG. 9(a) shows a state in which the clamping portion 32 is opened and the fitting opening 31 is opened to the maximum. In this state, even if the pipe P is flared, it is an opening that can be pulled out. FIG. 9(b) shows a state in which the operator grips the grip portion 22 and closes the fitting opening 31. FIG. In this state, the end of the pipe P inserted into the fitting opening 31 is fitted into the fitting opening 31 . FIG. 9C shows a state in which the tip of the crimping portion 21B is engaged with the alignment portion 36 of the clamping portion 32 and the clamping portion 32 is crimped and fixed. In this state, the pipe P in the fitting opening 31 is fixed and flared by the eccentric cone 12 of the flare processing machine 10 . After processing, when the grip portion 22 is opened and returned to the state shown in FIG. 9A, the flared end of the pipe P can be taken out from the fitting opening 31 (see FIG. 6).

As a result, when the pipe P has a different diameter, the corresponding fitting opening 31 can be used by selecting the corresponding fitting opening 31 and aligning the positioning portion 36 provided in the fitting opening 31 with the center support portion 21Aa. be possible. Further, if the pipes P have the same diameter, the flaring process can be performed one after another while the fixing clip 30 is attached to the crimping body 21 of the clamping device 20 .

The working steps for flaring the pipe P with the processing machine of the present invention are as follows.
(1) A step of attaching the fixed clip 30 by aligning the predetermined alignment portion 36 of the fixed clip 30 with the center support portion 21Aa of the crimping body 21 of the clamp device 20 (2) The pipe P end is inserted into the fitting opening 31 of the fixed clip 30 (3) After flaring, the grip 22 is operated to open the crimping body 21 to open the end of the pipe P with the flare P1. from the fitting opening 31

In addition, the process (1) can be omitted from the second time if the diameter of the pipe P to be processed is the same. By repeating the steps, it is possible to sequentially process. Moreover, even if the diameter of the pipe P is different, two types of fitting openings 31 formed in one fixed clip 30 can be selected, so the number of exchanges of the fixed clip 30 is reduced.

The flaring machine 10 has an eccentric cone 12 attached to the tip of a slider 11 that reciprocates while rotating. 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). At this time, an adjusting screw 11A is provided to press the rear end of the slider 11. By adjusting the distance between the electrode plates 11B provided on the rear end side of the eccentric cone 12 with this adjusting screw 11A, the eccentric cone 12 projecting positions are changed (see FIG. 11).

The illustrated flaring machine 10 includes a worm gear 14 provided on the drive shaft of a motor 13 (see FIG. 10). Furthermore, a slider 11 is provided which can move back and forth through a wheel gear 15 which transmits the rotation of the worm gear 14 at right angles, and an eccentric cone 12 is attached to the tip of the slider 11 (see FIG. 7).

The worm gear 14, wheel gear 15, and slider 11 of the flaring machine 10 are housed inside a gear case 16 (see FIG. 7). The illustrated flaring machine 10 is provided with a substantially box-shaped fixing jaw 17 on the advancing side of the eccentric cone 12 to fix one side of the crimping body 21 of the clamping device 20 .

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 . This clamping device 20 has a pair of crimping bodies 21 and a lock mechanism for locking the fixed state of the crimping bodies 21 . Then, the fixing clip 30 is inserted into the opened crimping body 21 . At this time, the operator operates the operation part 33 to insert the fixing clip 30 into the crimping body 21 with the clamping part 32 closed, and when the operator releases the operation part 33, the clamping part 32 is opened. Furthermore, when the crimping body 21 is closed with the end 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. As shown in FIG.

The illustrated clamping device 20 is provided with a magnet 26 that magnetically attaches the fixing clip 30 (see FIG. 1). When a fixing clip 30 fixed around the end of the pipe P is inserted into the opened crimping body 21, the fixing clip 30 is magnetically attached to the inside of the crimping body 21 in accordance with the position for flaring. (See FIG. 7). Additionally, a position sensor (not shown) is provided within the crimp body 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 26 and the position sensor in this way, the fixing clip 30 can be reliably positioned, and clamping errors can be prevented.

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 Flare processing machine 11 Slider 11A Adjusting screw 11B Electrode plate 12 Eccentric cone 13 Motor 14 Worm gear 15 Wheel gear 16 Gear case 17 Fixed jaw 18 Rotation connecting part 19A Female screw 19B Male screw 20 Clamp device 21 Crimping body 21A Fixed part 21Aa Center supporting part 21B Crimping part 22 Grip part 23 Connecting body 24 Grip cylinder 25 Battery 26 Magnet 30 Fixing clip 31 Fitting opening 32 Clamping part 33 Operating part 34 Spring member 35 Taper 36 Alignment part 37 Connecting shaft

Claims (5)

A flaring machine that attaches an eccentric cone to the tip of a slider that reciprocates while rotating and flares the end of a pipe fixed by the eccentric cone;
a clamping device that is integrally provided with the flaring machine and clamps and fixes the end of the pipe clamped by the fixing clip in the crimping body by aligning the end of the pipe that is clamped by the fixing clip with the operation of the grip portion to the position of the eccentric cone;
a fixing clip having a plurality of fitting openings with different diameters fitted to the outer periphery of the end of the pipe and mounted in the crimping body of the clamping device to fix the end of the pipe in the fitting opening by operating the grip part; In the electric flare processing machine,
The fixing clip is provided with a spring member that always expands each fitting opening, and forms a space in the crimping body for expanding each fitting opening,
1. An electric flaring machine characterized in that it is constructed so as to pull out the end of a flared pipe from a fitting opening expanded in a crimping body. The fixed clip includes a pair of clamping portions that swing freely to open and close via a connecting shaft, the spring member that normally biases the clamping portions to expand, and a clamping portion that extends from the clamping portion via the connecting shaft. and an operating portion provided to forcibly close, the fitting openings being continuously provided along the longitudinal direction of the opening of the holding portion, and a pair of positioning portions forming a pair on both outer side surfaces of the holding portion. 2. The electric flaring machine according to claim 1, wherein the aligning portion is formed for each abutment, and the fitting opening is aligned with the position of the eccentric cone. The crimping body of the clamping device is arranged such that a fixing portion that fixes one of the holding portions of the fixing clip and a swingable crimping portion that engages with the other of the holding portions face each other, and 3. The structure according to claim 2, wherein the tip of the crimping portion rocked by the operation of the grip portion is engaged with the alignment portion of the clamping portion on the rocking side to crimp and fix the pipe in the fitting opening. electric flaring machine. A center support portion that engages with the alignment portion of the fixing clip is provided on the fixing portion so that the center position of the fitting opening selected by the center support portion is aligned with the center position of the eccentric cone. Item 4. The electric flare processing machine according to item 3. 2. The electric flaring machine according to claim 1, wherein said flaring machine is provided with an adjusting screw for adjusting the projecting position of said eccentric cone by pressing the rear end of said slider.

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