JP3180886U - Tsubaki tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout tool capable of efficiently performing high-precision processing in press processing of a locking collar (flange) which becomes a joint at an end of a flexible pipe connected to a water heater or water supply. To do.
A bridging tool includes a holding member 1 composed of two semi-cylindrical split molds that are held with a flexible pipe interposed therebetween, an outer cylinder 2 into which the holding member is inserted, and an insertion into the outer cylinder. And a press body 3 that pushes the end portion of the flexible tube to perform the protrusion. Further, the holding member 1 has a lower tapered surface 1a formed on the lower outer peripheral surface of the two semi-cylindrical split molds, and the tapered surface 1a of the holding member is connected to the inside of the outer cylindrical body 2. It is engaged and supported by the stop portion 21.
[Selection] Figure 2

Description

  The present invention relates to a suitable bridging tool used for press-working a locking collar (flange) that serves as a joint at the end of a flexible pipe connected to a water heater or water supply.

As shown in FIG. 3 (a), the flexible pipe is formed by forming a peak 31 and a valley 32 at a predetermined pitch on the peripheral surface of the pipe body 30 at a predetermined pitch. As shown, several peaks are crushed to form a locking collar 33 having a larger diameter than the peaks.
For example, as shown in FIG. 3 (c), the flange (flange) 33 is locked to a locking rod 35 inside by a joint nut 34, and is necessary for joining to an outlet pipe 36 such as a water heater body. It is.

  The flange tool is a tool that presses the end of the flexible tube 30 and presses the flange 32 at the end of the tube. However, the conventional tool is a structure shown in FIG. It was. In other words, in the prior art, a holding member 51 composed of two left and right half-cylindrical split molds held across the flexible tube 30, an outer cylindrical body 52 into which the holding member is inserted, and the outer cylindrical body are inserted from above. The holding member 51 for holding the flexible tube includes a pressing step 53 that presses the end of the flexible tube 30. The holding step 51 for holding the flexible tube has a locking step portion in which the bottom of the flat surface has a flat surface inside the outer cylindrical body. In this state, a structure is known in which the holding member 51 is pressed from the side by a thumbscrew 55 and fixed in the outer cylinder. (For example, see Patent Documents 1 and 2)

  In the conventional protruding tool 50, the holding member 51 holding the flexible tube 30 is inserted into the outer cylinder 52 in a floating state. In this state, the press body 53 is set on the upper part, A hammer (not shown) or the like is struck to crush several peaks on the upper end of the flexible tube 30 to form a flange (flange) 33. The holding member 51 has a flat bottom 51a supported by a flat step engaging portion 52a inside the outer cylinder 52. However, the holding member 51 is loose with respect to the flexible tube 30, so 51 is pressed from the side to increase the clamping force.

  Japanese Patent No. 3809207   JP 2011-56575 A

  However, in the conventional swivel tool described above, the holding member is supported by the flat bottom surface inside the outer cylindrical body, but the flexible tube is not firmly clamped by the thumbscrew alone. When a strong force is applied, the axial center of the outer tube body and the holding member is displaced, and as a result, the collar formed at the end of the flexible tube is displaced with respect to the tube body. There is also a problem that it is difficult to provide a high-precision product by adding a force to press the side from the side to accelerate the shift of the shaft center.

  The present invention has been made in view of the above, and as the force applied to the holding member by the press body is increased, the clamping force to the flexible tube is increased and the flange (flange) formed at the upper end of the flexible tube is An object of the present invention is to provide a swivel tool that can efficiently perform high-precision machining with no deviation with respect to the shaft center and is advantageous in terms of cost with a simple configuration.

  The swivel tool according to the present invention includes a holding member (1) composed of two half-cylinder split molds that are held with a flexible pipe in between, an outer cylinder (2) into which the holding member is inserted, and the outer And a pressing body (3) that is inserted into a cylinder and presses an end portion of the flexible tube to perform protrusion, and the holding member (1) is divided into the two half-cylindrical splits. A lower tapered surface (1a) is formed on the lower outer peripheral surface of the mold body, and the tapered surface (1a) of the holding member is engaged with the engaging step portion (2) inside the outer cylindrical body (2). It is characterized by being supported in close contact.

  According to this configuration, since the holding member is supported by the tapered surface inside the outer cylindrical body, the stronger the force applied to the upper end portion of the flexible pipe by the press body, the stronger the clamping force to the flexible pipe. At the same time as acting strongly, there is no deviation in the shaft center, so that the collar can be formed accurately and the accuracy can be improved.

  The locking step portion 21 inside the outer cylindrical body 2 is preferably formed on a tapered surface 21 a corresponding to the tapered surface 1 a of the holding member 1. According to this configuration, since the holding member 1 is supported by surface contact between the tapers, the support of the holding member becomes stronger, and the holding force of the holding member with respect to the flexible tube can be made stronger by pressing the press. .

The bridging tool according to the present invention may be provided with a peep hole 22 that allows the inside to be viewed on the outer surface facing the press working position inside the outer cylindrical body 2.
According to this configuration, the work can be efficiently performed while visually confirming the degree to which the collar is formed at the end of the flexible tube by the pressing force of the press body.

  Moreover, it is preferable to provide the set screw 24 in the peep hole 22 or separately from this peep hole. According to this configuration, when the pick-up tool is not used, transported, or moved, the set screw is tightened so that the holding member and the press body 3 are incorporated into the outer cylindrical body 2 so that it does not fall off safely. Can be handled.

According to the swivel tool according to the present invention, when performing a swiveling process with a simple structure, there is no need for a means for holding the flexible tube by pushing the holding member from the side with a thumbscrew, and the swiveling process is quick and easy. It can be performed.
As the holding member has a stronger pressing force due to the action of the taper surface, the holding of the flexible tube becomes stronger, so that the pressing of the rib can be performed quickly and with high accuracy.

  It is a front view which shows the pick-up tool of this embodiment.   (A) is AA sectional drawing in FIG. 1, (b) is sectional drawing at the time of accommodation.   (A) is a front view of the flexible pipe before forming the collar, (b) is a front view of the flexible pipe after forming the collar, (c) is a front view of the flexible pipe before joining and the joined portion. .   It is an external appearance perspective view which shows each of a holding member, a press body, and an outer cylinder body.   Sectional drawing which shows an example of the conventional bridging tool.

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

  An embodiment of the swivel tool according to the present invention will be described with reference to FIGS.

1 and 2, the outer cylinder 2 is composed of a large-diameter cylinder 2a formed by a series of a large-diameter cylinder 2a having an upper portion opened upward and a small-diameter cylinder 2b having a lower portion opened downward. The body has an accommodating portion 23 for the holding member 1, and a small diameter cylindrical body 2 b has an insertion portion 25 for a flexible tube 30. The holding member accommodating portion 23 inside the large-diameter cylindrical body 2a is provided with a locking step portion 21 that supports the holding member 1 at the bottom.

  The locking step portion 21 is formed in a step shape, but is preferably formed on a tapered surface 21a corresponding to the tapered surface 1a of the holding member 1 so that the holding member 1 is supported by surface contact between the tapered members. .

The outer cylinder 2 is provided with a peep hole 22 on the outer surface portion where the inside can be viewed. The position of this peep hole should just be a site | part which faces the press processing position of an outer cylinder.
Further, a set screw 23 is provided in the peep hole 22, and when the holding member 1 and the press body 3 are accommodated in the outer cylindrical body 2, when the set screw 23 is tightened, the internal components are fixed in a stationary state. Therefore, dropping off can be prevented.

  The holding member 1 is composed of two semi-cylindrical split molds that are held with the flexible pipe 30 sandwiched therebetween. When it is sandwiched from the left and right, it is engaged and held so as to be integrated in the axial direction. Further, the lower outer peripheral surfaces of the two semi-cylindrical split molds are formed as a taper surface 1a which is narrowed down.

  The press body 3 has a short cylindrical shape, and has a small protrusion 31 on the lower surface so that it can be fitted into the hollow from the end of the flexible tube.

  The swivel tool according to the present invention has extremely high industrial applicability as it improves the workability at the factory site and provides a highly accurate product efficiently and significantly improves the cost.

DESCRIPTION OF SYMBOLS 1 Holding member 1a Tapered surface 2 Outer cylinder body 3 Press body 21 Locking step part 21a Tapered surface 22 Peep hole 23 Set screw 30 Flexible pipe 31 Mountain 32 Valley 33 Brim

Claims (4)

A holding member (1) composed of two semi-cylindrical split molds that are sandwiched and held between the flexible pipe, an outer cylinder (2) into which the holding member is inserted, and a flexible pipe inserted into the outer cylinder. A tapping tool comprising a press body (3) for tapping the end portion to tuck out,
The holding member (1) has a lower tapered surface (1a) formed on the lower outer peripheral surface of the two semi-cylindrical split molds, and the tapered surface (1a) of the holding member is an outer cylindrical body ( 2. A swivel tool characterized by being engaged and supported by a locking step (21) inside 2).   The locking step portion (21) inside the outer cylindrical body (2) is formed on a tapered surface (21a) corresponding to the tapered surface (1a) of the holding member (1), and the surface contact between the tapered members is as described above. 2. A swivel tool according to claim 1, characterized in that the holding member (1) is supported.   3. A swivel as claimed in claim 1 or 2, wherein the outer cylinder (2) is provided with a peep hole (22) for viewing the inside at an outer surface facing the press working position inside the outer cylinder (2). tool.   The swivel tool according to claim 1, wherein a set screw (23) is provided on the outer cylinder (2).

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