JPS62114731A - Production unit for corrugated pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing corrugated pipes used in heat exchangers and the like.

(Prior art) It is well known that in the past, when manufacturing heat exchangers, etc., so-called corrugated pipes, which have a spirally deformed part by squeezing the pipe wall from the outside, are used between the joints on both sides. It becomes. Test measurements have shown that in this type of pipe, the heat exchange efficiency is significantly improved by the loss of water head and turbulence caused by the waveform deformation of the flow path.

However, the development of the use of such corrugated pipes has been hindered by the difficulty of commercializing them, and currently proposed devices are far from satisfying.

(Objective of the Invention) An object of the present invention is to eliminate the drawbacks of the prior art and provide a corrugated pipe manufacturing apparatus that has a high production speed and low maintenance costs.

Another object of the present invention is to manufacture corrugated pipes of any length that have smooth parts at the ends (or at one or more places along the entire length), making it easy to connect and fix in place. The purpose is to provide manufacturing equipment.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

In Figures 1 to 6, two flanges 2.2 are vertically installed on a base 1 constituting a frame of a corrugated pipe, and a rotating sleeve 4 is attached to these 7 flanges 2.2.
is supported horizontally via roller bearings 3.

A pulley 5 is supported near one end of the rotary sleeve 4, and a bell 1-0 connected to a motor (not shown) is attached to the pulley 5, so that its speed can be adjusted.

A socket 7 is axially inserted into the rotary sleeve 4, and one end of the socket 1-7 is supported by a leg 8 connected to the base 1. The mouth of the socket 1-7 is directed toward a roller device 9, which guides the pipe to be processed and moves it continuously in the axial direction, and is itself speed adjustable. ing.

In particular, as shown in FIGS. 1 and 2, a horizontal bracket 10 is supported on the 7 langes 2, 2 of the frame, and between the horizontal brackets +-10, the lower end is at the frontage of the base 1. Two pivot arms 12, 12 are connected at 11, respectively, through 1a and connected to yoke 12a. The yoke 12a is fixed to the end of the drive part 13 of a two-stage pneumatic or hydraulic jack 14. As the jack 14 extends or retreats, the yoke 1
2a moves the pivot arm 12.12 into one of the tilted positions indicated at 12' and 12'' in FIG.

As shown in FIG. 3, the end of the rotating sleeve 4 opposite to the side on which the pulley 5 is tensioned is placed directly in the bearing 16 interposed between the end and the socket 7. It is connected to the rotating head 15 via, for example, an insert pin (not shown).

The rotary head 15 has through holes 15a (see FIG. 4) facing each other in the radial direction for mounting the cylindrical guide 17 therein. A flange portion 17a, which is fixed to the rotary head 15 by a screw 18, projects from the end of each guide 17.

The opening 17b (see Fig. 4) coaxially provided in each guide 17 is formed into a polygonal outline (rectangular in the expected commercialization example), and the block 19 can be slid into this opening 17b. inserted into. This block 19 has the shape of a downward open yoke and is provided with a horizontal shaft 20 supporting a squeezing roller 21 or a cutting roller 22.

Each block has a protruding collar 19a to which a implantable pole L-23 (only one is shown, omitted in Figures 3 and 4) is attached downward. One is mounted with the collar 19a facing outside. Each stud 23 is inserted into a corresponding bottomed hole 17Ci provided in the id 17, and is inserted into a spring 24 mounted therein, and this spring 24 urges the collar 19a, that is, the block 19 outward. . Further, in FIGS. 2 and 3, a drawing roller 22 for drawing metal, ie, a corrugated device, is provided in the upper block 19, and a cutting roller 21 for drawing the pipe in the light area. is provided in the lower block 19.

Here, cut I! The screw 18 that fixes the guide 17 with the block 19 on the side equipped with the fit cola 22 is the flange part 17a+ of the guide 17: The screw shaft is inserted into the hole provided without a gap and is screwed into the screw hole of the rotating head. However, the method of fixing the guide 17 on the side that supports the squeezing roller 21 is different from this. As shown in FIG. 4, the guide 17 on the side that supports the squeeze roller 21 has a frontage 17.
An arcuate hole 17d concentric with the axis of the rotary head 15 is provided, and a screw 18 is inserted into the hole 17d.
1 direction adjustment is possible.

Attached to the collar 19a of each block 19 is a pin 19b, each of which is suitable for movement along a cam surface formed by the combination of two rings 25, 26 surrounding the rotary head 15. It has a hemispherical shape. The inner surface of each ring 25, 26 has two longitudinal grooves 25a, 25b and a groove 26 for receiving the bottle 19b.
a and 26b are installed facing each other. Here, full 2
5a.

The bottom surface of groove 26a is parallel to the center line of ring 25, 26, while the bottom surface of groove 25b, 26b is parallel to the center line of ring 25.
．． It is formed obliquely with respect to the center line of 26, and forms an operation inclined surface of one corresponding block. Further, these grooves 25a, 26a and grooves 25b, 26b are arranged alternately, and the slopes are reversed, so that when the rings 25, 26 are installed, the slopes 25b and 26b are opposite to each other. is formed.

Ring 25 or ring 26 (ring 26 in this example)
An annular groove 26c is formed around the ring 25, which forms the orbit of the two rollers 27, 27 supported by the pivot arm 12, and the rings 25 and 26 operate the jack 14 regardless of the rotational movement by the rotating head 15. This allows reliable movement in the axial direction.

Next, the operation of the above embodiment will be explained.

In the state shown in FIGS. 1 and 3, the ring 25.
26 is in an intermediate position, and two opposing blocks 19.
Each of the 19 bins 19b is located within 258.26a of a parallel plane. In this state, the forward speed given to the smooth pipe 28 by the roller device 9 is adjusted according to the rotational speed of the rotary sleeve 4 and the inclination angle given to the squeezing roller 21.

A smooth pipe 28 passes axially through the fixed socket 7 and further through an inner tube 29 (see FIG. 3) attached to the end of the fixed socket 7. pipe 28
is further passed at right angles to the squeezing roller 21 and the cutting roller 22 and guided into an outlet guide member supported by a branch 31 (see FIG. 1) fixed to the base 1.

When the length of the tip of the pipe 28 extending across the squeezing roller 21 and cutting roller 22 reaches the desired length corresponding to a smooth connecting sleeve, the operator extends the jack 14 to move the pivot arm 12 into the first position. The rings 25, 26 are moved to the position shown at 12- in the figure, which moves the rings 25, 26 to the position shown in FIG.

Due to this movement, the block 19 on the side provided with the squeezing roller 21 is pushed back toward the center of the guide 17 against the coil spring 24 by the action of the pin 19b.

As a result, the squeezing roller 21 is pressed against the pipe 28, forming spiral peaks or waves on the pipe 28, and the pipe is placed on the support (131) with such a waveform (see 28' in the figure). is passed through the exit guide member.

Further, when the rings 25, 26 are moved as described above, the block 19 on the side provided with the cutting roller 22 does not move relative to the corresponding guide 17. This is because the pin 19b passes through the hole 26a, which has a parallel bottom surface.

If the driver adjusts the jack 14 in the opposite direction, "waveforming" will occur.
A different action is performed. That is, when the jack 14 is moved backward and the pivot arm 12 is moved to the tilted position indicated by 12'' in FIG. 1, the rings 25, 26 will be in the state shown in FIG. 6. 26, the block 19 on the side having the squeezing roller 21 is pushed back radially outward by the coil spring 24, and the pin 19a enters the hole 25a having a parallel bottom surface, and the squeezing roller 21 28. On the other hand, the pin 19b of the block 19 on the side having the cutting roller 22 moves along the slope (25t) having an inclined bottom surface, is pushed radially inward, and the block 19 on the side having the cutting roller 22
The cut is made across the pipe 28.

As is clear from the foregoing, the movement of the pivot arm 12 takes place in two steps from 12' (corresponding to FIG. 5) to 12'' (corresponding to FIG. 6). When the height reaches a predetermined value, the driver operates the jack 14 to move the rings 25, 26 to the intermediate position shown in FIG. This operation ends the "corrugation", but the pipe 28 continues to move forward. Next, the operator stops the roller device 9 to stop the axial movement of the pipe 28, and further operates the jack 14 to move the cutting roller 22 in the radial direction to cut the pipe 28.

As described above, the apparatus of this embodiment can lengthen a corrugated pipe, that is, a corrugated pipe, to an arbitrary new length.

The apparatus shown in FIGS. 7 to 10 is a corrugated pipe manufacturing apparatus with a very high production speed, which is capable of helically carving three ridges in a pipe at angular positions of 120 DEG with respect to each other.

The device of this embodiment has a gear 32 connected via a chain 33 to an adjustable speed motor (not shown), which gear 32 is connected to a horizontal sleeve 34 suitably supported rotatably relative to the frame. The keys are on top. This sleeve 34 is integrally connected to a rotating head 35 inserted into an operating cam 36 on the opposite side of a device (not shown) for correcting and advancing the pipe, and the operating cam 36 is connected to the sleeve 34. It is connected via a longitudinal rod 37a to a rotary disk 37 that is pivotally supported by a vertically provided bracket 38.

The brackets 1 to 38 are provided with guides 39 and 39 for keeping them in a constant angular position, and the bracket 38 is fixed to a drive part 40 of a jack 41, as shown in FIGS. 1 to 6. As in the embodiment described above, the position of the operating cam 36 is made variable by extending and retracting the drive section 40.

The rotating head 35 has three radial grooves 35a arranged at an angle of 1200 degrees with respect to each other.
A cylindrical block 42 constituting a holder for a squeeze roller 43 for "corrugation" is attached to the trapezoid 35a (see FIG. 8).

A slider 45 is attached to the opposite side of each block 42 from the side on which the squeeze roller 43 is attached via a screw 44.
It is formed in a contour that engages in a dovetail-like manner with a corresponding groove 46a provided in the groove.

The bottom surface of this groove 46a is formed in an inclined shape as shown in FIG. 7, and serves as an inclined guide surface that allows the slider 45 to move in the radial direction.

Screw 44 assembling block 42 and slider 45
Turning changes the direction of the block 42 in the groove 35a, which also causes the pipe 28 of the corresponding squeezing roller 43 to change direction.
The direction with respect to the axis can be changed. Vernier scale 45a is placed around each slider 450.
is engraved thereon, and this vernier scale 45a cooperates with a mark provided in advance opposite thereto to facilitate the above adjustment.

The rotary head 35 is formed with two cylindrical fi 35b facing each other at positions separated from the fi 35a in the axial direction (see FIG. 9). A block 47 with an end facing toward the center of the cutting roller 48 is inserted into one of these grooves 35b, and the other end of this block/I7 is inserted into a groove provided toward the cam body 46 from the rotary head 35. 4
6b in a dovetail shape. The bottom surface of this groove 46b is parallel to the bottom surface of the opposite J46a, as shown in FIG. In addition, the other groove 35b has a receiver 4.
9 is inserted and fixed to the rotating head 35.

The operation of the embodiment described above is substantially similar to the embodiment shown in FIGS.
It is continuously moved in the axial direction through the flange 38 and the rotating sleeve 34, and then guided into the rotating head 35 which is rotated in conjunction with the rotating sleeve 34 (see FIG. 7).1. When the drive section 40 of the jack 41 is extended, the operating cam 36 moves to the right in FIG.
are driven at the same time, and the squeezing roller 43 of the corresponding block 42 moves halfway in the Y direction! The PIJ is inserted and pressed against the pipe 28.

On the other hand, due to the operation of the operating cam 36, the block 47 is moved in the opposite radial direction, and the cutting roller 48 is separated from the pipe 28-. This kind of “waveforming J”
After operation, when the jack 41 is moved backward and the operating cam 36 is moved, the block 42 with the squeezing roller 43 is moved radially outward, and at the same time the block 47 with the cutting roller 48 is moved radially toward the center. It will be done. Note that, of course, the cutting operation is performed after the cutting roller 48I stops advancing the pipe 28.

The apparatus of the invention is particularly suitable for fully automated operation, with predetermined lengths of the "corrugated" section and the smooth sleeve section of each pipe produced. Also, the number of squeeze rollers for "corrugation" can vary widely depending on the type of E-corrugation or corrugated pipe being manufactured and the desired production rate. Furthermore, the movement of the squeezing roller or cutting roller is not limited to linear movement as in the above embodiments, but may also be angular movement (de
It is also possible to perform this by a drive cam which performs a placemcnt angulare.

In addition, by controlling the forward speed of the pipe and the rotational speed of the head, and controlling the direction of the squeezing roller, it is possible to manufacture a single waveform with any spiral angle.
It is also possible to produce a "waveform" in the length direction by keeping the head stationary at a fixed angle.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, and FIG. 1 is a partial cross-sectional schematic side view of a corrugated pipe manufacturing apparatus, FIG. 2 is a sectional view taken along the It-H line in FIG. 1, and FIG. FIG. 4 is an exploded perspective view showing how the squeezing roller is attached to the rotating head shown in FIG. 3; 5 and 6 are sectional views similar to FIG. 3 showing different operating positions, FIG. 7 is a partially sectional schematic side view of a separate corrugated vibrator manufacturing device, and FIGS. 8 and 9 are respectively sectional views similar to FIG. 7 is a sectional view taken along the line ■-■ and the line IV-IV in FIG. 7. FIG. 15.35... Rotating head 21.43... Squeezing rollers 22, 48... Cutting roller 28.28'... Vibrator

Claims (2)

[Claims] (1) An apparatus for manufacturing corrugated pipes used in heat exchangers, etc., which has at least one squeezing roller that moves in a radial direction with respect to a rotating head, and this squeezing roller is angled appropriately with respect to the rotating head. The squeezing roller (21, 43) is configured to apply pressure to the wall of the pipe moving in the axial direction of the rotary head to form a corrugated shape while maintaining the same pressure, and further to form a corrugated shape on the squeezing roller (21, 43) after the corrugating is completed. a cutting roller (22,
48) A corrugate pipe manufacturing device comprising: (2) The squeezing roller (21, 43) and the cutting roller (
22, 48) are the rotating heads (15, 35), respectively.
radially movable blocks (19, 47), which are arranged parallel to each other on the inner surface of the operating cam (25-26, 36) surrounding the rotary head. Inclined cam surfaces (25b, 26
b, 46a, 46b), these cam surfaces are arranged axially offset from each other, and the movement of the operating cam causes the cam surface to act arbitrarily on any of the blocks. The corrugated pipe manufacturing apparatus according to claim 1, wherein the corrugated pipe manufacturing apparatus is configured to perform the following.