JPS601089B2 - Pipe branch seat processing equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a processing device for a branch seat of a pipe.

Conventionally, when forming a branch seat on a pipe, a so-called burring process is often performed to make the branch seat protrude outward from the pipe wall surface, and such burring process is generally performed by dividing the pipe, or This is done by forming a pipe using a plate material that has been burred in advance. SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus that directly performs burring on a pipe to form a branch seat.

According to the present invention, in a pipe in which a plurality of axially cornered branch seats are to be formed, a plurality of branch seats are moved in the direction of the track line of the pipe and inclined with respect to the rut line of the pipe. a punch pusher having a plurality of cam surfaces; a plurality of spherical punches that engage with the cam surfaces and are driven by the cam surfaces in a direction perpendicular to the flywheel of the pipe; The spherical punch is slidably installed in a groove formed along the bag line direction to prevent movement of the spherical punch in the direction along the axis of the pipe and guide the spherical punch in a direction perpendicular to the axis of the pipe. This is achieved by a pipe branch seat processing device characterized by having a plurality of punch guides.

Furthermore, in this case, according to another feature of the present invention, a die for forming the outer peripheral edge of the branch seat that is applied to the outer surface of the pipe and pushed outward by the spherical punch together with the punch pusher, spherical punch, and punch guide is provided. These dies may be used in combination, and by using such a die, it is possible to burr a branch seat with a distinctly overhanging shape. The apparatus for processing a pipe branch seat according to the present invention is suitable for being configured to simultaneously process a large number of branch seats spaced apart along a pipe separation edge.

In this case, a plurality of spherical punches are arranged corresponding to each branch seat, and a punch guide is used that has a guide surface that guides the plurality of spherical punches at a predetermined interval and in a direction perpendicular to the pipe axis. I wish I could. As such a punch guide, a one having a spherical punch guide hole with diagonal pupils corresponding to the position of the branch seat in an integral band or rod-like body extending along the pipe inguinal direction, or mutually A plurality of blocks may be used, each having a length corresponding to the distance between opposing surfaces of adjacent spherical punches. Further, when processing a plurality of branch seats using a plurality of spherical punches as described above, the punch pusher may be configured as a rod-shaped body having a plurality of cam surfaces corresponding to each spherical punch. By moving the punch pusher in the direction of the pipe axis, a plurality of spherical punches are simultaneously pushed out in a direction perpendicular to the pipe axis, and burring of a plurality of branch seats is simultaneously achieved. The pusher may be configured as a rod-shaped body having only one cam surface at its tip. In this case, as the punch pusher is moved in the direction of the pipe line, the spherical punches one by one will move perpendicular to the pipe axis. The burring process of the branch seat is performed one by one from one end of the pipe to the other end.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a perspective view showing a state in which a branch seat 2 is formed by performing a burring process on a pipe.

FIG. 2 is an exploded perspective view showing a first embodiment of a pipe branch seat processing apparatus according to the present invention.

In the figure, 3 is a punch guide L, 4 is a spherical punch, 5 is a punch busher, and 6 is a die. In this case, the punch guide 3 is made of a band-shaped body and corresponds to the branch seat to be formed along the pipe. A hole 7 is provided at the position to prevent the spherical punch 4 from moving in the pipe axis direction and to guide it in a direction perpendicular to the pipe axis.The punch pusher 5 is located at a position corresponding to the hole in the punch guide. cam surface 8
It is equipped with The cam surface 8 in this case is formed as a double-sided cam, that is, the spherical punch 4 is pushed up even if the punch pusher is moved in any axial direction from the state where the spherical punch 4 is seated at the deepest position in the center of the cam surface 8. It looks like this. The die 6 is also provided with a die hole 9 at a position corresponding to the branch seat to be formed. FIG. 3 is an exploded perspective view of a second embodiment of the present invention.

In FIG. 3, parts corresponding to those in FIG. 2 are designated by the same reference numerals as in FIG. In this embodiment, the punch guide 3 is made up of individual blocks 3', 3'', 3, etc., each having a length corresponding to the distance between the facing surfaces of adjacent spherical punches 4. Further, the punch pusher 5 is formed with a groove 10 for receiving and guiding a punch guide made of blocks 3' to 3'', etc. In this case, the cam surface 8 of the punch pusher 5 is formed as a single-sided cam, so that it is not a punch. A pressing force in a direction perpendicular to the axis is exerted on the spherical punch 4 only when the punch is moved to the right in the figure. FIG. 4 is an exploded perspective view showing a third embodiment of the pipe branch seat processing apparatus according to the present invention.

In FIG. 4, parts corresponding to those in FIG. 2 or 3 are designated by the same reference numerals as in FIG. 2 or 3. In this embodiment, the chopper punch guide 3 is configured as a rod-shaped body having an outer diameter that approximately matches the inner diameter of the pipe in which the branch seat is to be formed, and the rod-shaped body is shaped in accordance with the position of the branch seat. A hole 7 is formed diametrically across the hole. Further, in this embodiment, the punch busher 8 is configured as a band with a single cam surface 8 at its tip, and the band has a corresponding cam surface 8 formed in the punch guide 3. 11. FIGS. 5 and 6 are cross-sectional views showing a mode of burring a branch seat using the embodiment shown in FIG. 3.

Of these, "Figure 5 shows the setting state before machining. A punch pusher 5 is inserted into the tube 1 in a manner that almost fits the inner surface of the tube, and a spherical punch 4 is attached to the cam surface 8 of the tube 1. The groove 10' is the block 3' that constitutes the punch guide.
In this case, as shown in the figure, the right end surfaces of the die 6, the pipe, and the three floes are supported by the stopper 12. In this state, the punch pusher 5 moves in the direction of arrow A. When the spherical punch 4 is moved in the direction perpendicular to the pipe axis, the spherical punch 4 is pushed up in the direction perpendicular to the axis of the pipe, pushing outward the periphery of the hole 13 previously drilled in the pipe 1, and branching out as shown in FIG. Achieving burring of the seat. Brief Description of the Drawings Figure 1 is a perspective view showing a pipe with a burred branch seat, and Figures 2 to 4 show the processing of the branch seat of a pipe according to the present invention. FIGS. 5 and 6 are exploded perspective views showing three embodiments of the apparatus; FIGS. 5 and 6 are perspective views showing a mode in which the embodiment shown in FIG. 3 is used to perform burring on a branch seat of a pipe.

1 - pipe, 2 - branch seat, 3 - punch guide, 4 - punch, 5 - punch pusher, 6 - die, 7 - punch guide hole, 8 - cam surface, 9 - die hole, 10, 11 - groove, 12
~stopper, 13~hole.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A plurality of cam surfaces that are moved in the axial direction of the pipe and inclined with respect to the axis of the pipe in a pipe in which a plurality of axially spaced branch seats are to be formed. a plurality of spherical punches that engage with the cam surface and are driven by the cam surface in a direction perpendicular to the axis of the pipe; and a groove formed in the punch pusher along the axial direction thereof. and a plurality of punch guides that are slidably attached to the spherical punch to prevent movement of the spherical punch in the direction along the axis of the pipe and guide the spherical punch in a direction perpendicular to the axis of the pipe. Equipment for processing branch seats of pipes. 2. A punch pusher having a plurality of cam surfaces that are moved in the axial direction of the pipe and inclined with respect to the axis of the pipe in a pipe in which a plurality of axially spaced branch seats are to be formed; a plurality of spherical punches that engage with a cam surface and are driven by the cam surface in a direction perpendicular to the axis of the pipe; and a plurality of spherical punches that are slidably mounted in grooves formed in the punch pusher along the axial direction thereof. a plurality of punch guides that prevent the spherical punch from moving in a direction along the axis of the pipe and guide the spherical punch in a direction perpendicular to the axis of the pipe; 1. An apparatus for processing a branch seat of a pipe, comprising: a die having a plurality of die holes forming an outer peripheral edge of the branch seat which is extruded outwardly by a die.