JP2000052401A - Centering regulator for pipe shaping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily observe an appearance of a pipe passed through a pipe shaping tool by forming a slide means of a pair of male thread members and female thread members respectively provided in a direction perpendicular to an axis of a base plate. SOLUTION: Slide means 27 are formed of male thread members 36a, 36b and female thread members 37a, 37b installed in a direction perpendicular to an axis of a base plate 22. For example, when the member 37a of the upper slide means is moved down and the member 37b of the side slide means is moved rightward, a core 26a of the shaping tool 26 can be moved to lower leftward to a core 29a of a pipe 29. Accordingly, as compared with the case of moving an overall cooling water tank, the core 26a can be effectively adjusted to a predetermined position, and its regulating unit can also be conducted at each infinitesimal unit. Since a transparent tube 24 is provided rear of the shaping tool 26, an appearance of the pipe 29 passed through the shaping tool 26 can be confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centering adjusting device for a pipe shaping tool, and more particularly, to a pipe shaping tool for shaping a synthetic resin pipe extruded from a die of an extruder and feeding the pipe into a cooling water tank. The present invention relates to a centering adjustment device.

[0002]

6 to 8 show a conventional synthetic resin pipe manufacturing apparatus. FIG. 6 is a schematic view of the entire apparatus, FIG. 7 is a sectional view of a mold, and FIG. It is a front view. The synthetic resin pipe 1 is formed by extruding a raw material from a mold 3 provided at the tip of an extruder 2, shaping it with a pipe shaping tool 4, sending it to a cooling water tank 5, and cutting it into a predetermined length after cooling. It is manufactured by.

[0003] The mold 3 is installed at a predetermined position of the extruder 2 using a hoist 6 and a mold cart 7, and the extruder 2 is fixed to the head flange of the extruder 2 as shown in FIG. 2a
It is performed by bolt connection between the mold and the flange 3a of the mold 3, or by a hydraulic clamp. At this time, if the mounting accuracy of the mold 3 is not sufficient, or
If the adjustment between b and the mandrel 3c is not sufficient, the core of the extruded pipe 1 will be misaligned, causing defects such as uneven wall thickness. In addition, when performing the thickness deviation adjustment with the mold 3, it was difficult to perform the minute thickness deviation adjustment without causing the molten resin to leak.

[0004] The pipe shaping tool 4 corrects and corrects uneven thickness or the like generated as described above.
The cooling water tank 5 is provided at an inlet portion thereof, and the centering thereof is performed by tightening a push bolt or the like of an adjusting mechanism 8 provided at an inlet portion of the cooling water tank 5 with reference to a fulcrum 5a provided at a rear portion of the cooling water tank 5. It was done by loosening.

As shown in FIG. 8, for example, an adjusting mechanism 8 is provided with a screw block 10 whose horizontal position is adjusted by left and right adjusting bolts 9 on a frame 5b below an inlet of the cooling water tank 5. An upper and lower adjustment bolt 11 through which the screw block 10 is inserted in the vertical direction is provided, and the upper end of the upper and lower adjustment bolt 11 is formed so as to support an inlet portion of the cooling water tank 5.

[0006]

However, in the conventional centering method, since the whole cooling water tank 5 is swung,
Precise position adjustment is difficult, and the minimum displacement is 1-2
mm. Further, since the pipe 1 that has passed through the pipe shaping tool 4 enters the cooling water tank 5 as it is, the outer surface state cannot be observed until the pipe 1 has passed through the cooling water tank 5.

Accordingly, the present invention provides an apparatus for adjusting the centering of a pipe shaping tool, which can accurately center the pipe shaping tool and can easily observe the appearance of the pipe passing through the pipe shaping tool. The purpose is.

[0008]

In order to achieve the above-mentioned object, a centering adjustment device for a pipe shaping tool according to the present invention comprises a core for a pipe shaping tool for shaping a synthetic resin pipe extruded from a die of an extruder. A base plate provided at an inlet of a cooling water tank for cooling the synthetic resin pipe, a slide plate slidably provided on a surface of the base plate on an extruder side, and an extrusion of the slide plate. A shaping tool mounting flange provided on the machine side via a transparent tube, and a shaping tool provided on the shaping tool mounting flange, and the slide plate is provided on the base plate with respect to a base plate surface. Characterized in that the slide means is provided for sliding in a direction perpendicular to the axis of the base plate. It is characterized in that it is formed by a pair of male screw member and the female screw member provided respectively.

[0009]

1 to 5 show an embodiment of a centering adjusting device for a pipe shaping tool according to the present invention.
Is a sectional front view, FIG. 2 is a partially cutaway side view seen from the pipe inlet side, FIG. 3 is a sectional view taken along line III-III of FIG. 1 showing a state where a slide plate is slid, and FIG. FIG. 5 is a cross-sectional view showing a state where the slide plate is slid in the opposite direction, and FIG. 5 is a schematic view of the entire apparatus.

The centering adjustment device for a pipe shaping tool according to the present embodiment includes a base plate 22 fixed to an inlet side of a cooling water tank 21 and a slide plate slidably provided on a surface of the base plate 22 on an extruder side. 23, a shaping tool mounting flange 25 provided on the extruder side of the slide plate 23 via a transparent tube 24, a shaping tool 26 provided on the shaping tool mounting flange 25, and a base plate. And a slide means 27 for sliding the slide 22 against the surface of the gate 22.

The base plate 22 is attached to the head 21a of the cooling water tank 21 via a guide tube 28.
A plurality of nozzles 22a for ejecting cooling water toward the pipe 29 passing through the shaping tool 26 and a pipe 22b are provided.

The shaping tool 26 has a sizing die 30 having an inner diameter corresponding to the outer diameter of the pipe 29 and a tubular body 31 behind the sizing die 30. The cooling water from the supply passage 30a is supplied to the pipe 2
9 is provided between the outer peripheral surface of the sizing die 30 and the inner peripheral surface of the sizing die 30 to form a water film. Further, a plurality of annular grooves 31 a communicating with the outside through small through holes (not shown) are provided on the inner peripheral surface of the cylindrical body 31, and the inside of the transparent tube 24 on the outer peripheral side of the cylindrical body 31 is formed. , Are set in a reduced pressure state. Therefore, when the pipe 29 passes through the inside of the tubular body 31, the outer peripheral surface of the pipe 29 is sucked and adhered to the inner peripheral surface of the tubular body 31, so that the pipe 29 is shaped into a predetermined shape and dimensions.

A fixed substrate 32 to which the shaping tool 26 is fixed is removably mounted by a toggle clamp 33 in a circular recess provided on the front surface of the shaping tool mounting flange 25. Further, the shaping tool mounting flange 25 is connected to the transparent tube 2 by a plurality of stud bolts 34 provided on an outer peripheral portion thereof.
4 is fixed to the slide plate 23 in a state where it is sandwiched, and is formed so as to move integrally with the slide plate 23.

The slide plate 23 is held by a plurality of holding jigs 35 provided on the outer periphery of the base plate 22. The holding jig 35 has a plunger 35b provided with a ball 35a at a contact portion with the slide plate 23, and is formed so that the slide plate 23 can smoothly slide on the surface of the base plate 22.

The sliding means 27 is provided with male screw members 36a, 36a provided in a direction perpendicular to the axis of the base plate 22, that is, in a vertical direction and a horizontal direction.
36b and female screw members 37a and 37b screwed to the male screw members 36a and 36b, and the female screw members 37a and 37b are portal holders provided on the outer periphery of the base plate 22. The male screw members 36a and 36b are slidably held in the axial direction by 38a and 38b, respectively. Furthermore, female screw members 37a, 37
b, elongated holes 39a, 39b in a direction perpendicular to the axis of the male screw members 36a, 36b are provided.
Slide keys 40a and 40b provided on the slide plate 23 are engaged with 9a and 39b.

That is, when the male screw member 36a of the upper slide means 27 is rotated by the handle 41a,
The female screw member 37a screwed into the male screw member 36a moves up and down while being guided by the holder 38a, whereby the slide plate 23 moves up and down. At this time, the slide key 40b of the side slide means 27 is
The slide plate 23 moves up and down according to the rotation angle of the male screw member 36a. Similarly, by rotating the handle 41b of the side slide means 27, the slide plate 23 can be moved in the horizontal direction, and together with the slide plate 23, the transparent tube 24,
The stud bolt 34, the shaping tool mounting flange 25, and the shaping tool 26 can be moved in any direction.

For example, as shown in FIG. 3, when the female screw member 37a of the upper slide means 27 is moved downward and the female screw member 37b of the lateral slide means 27 is moved rightward in the figure, Pipe 29
The core 26a of the shaping tool 26 can be moved to the lower right with respect to the core 29a. As shown in FIG. 4, when the female screw member 37a of the upper slide means 27 is moved upward and the female screw member 37b of the side slide means 27 is moved to the left, the core 29a of the pipe 29 is moved. The core 26a of the shaping tool 26 moves to the upper left.

Therefore, the core 26a of the shaping tool 26 can be surely adjusted to a predetermined position as compared with the case where the entire cooling water tank is moved, and the adjustment unit can be adjusted in a minute unit of about 0.1 mm. it can. Further, since the transparent tube 24 is provided behind the shaping tool 26, the appearance of the pipe 29 passing through the shaping tool 26 can be immediately confirmed. Further, the substrate 32 to which the shaping tool 26 is fixed is connected to the toggle clamp 3.
Since the mounting is performed at 3, the attachment and detachment of the shaping tool 26 can be easily performed without using a tool.

The rotation of the male screw members 36a and 36b can be performed by a servo motor or the like.
Further, as shown in FIG. 5, an ultrasonic thickness measuring device 50 is provided, a thickness deviation of the pipe 29 is detected based on a signal from the ultrasonic probe 51, and this data is calculated by a calculator 52 to calculate a vertical direction. By operating the servomotor 53a for the left and right direction and the servomotor 53b for the left and right direction and rotating the male screw member as described above, the centering of the shaping tool 26 can be performed.

Since the pipe extruder side can be formed in the same manner as in the prior art, the same reference numerals are given and the detailed description is omitted. Further, the cooling water tank can also correspond to various types which are generally used. Furthermore, the shaping tool itself can be of any structure.

[0021]

As described above, according to the apparatus for adjusting the centering of the pipe shaping tool of the present invention, the centering of the shaping tool can be performed reliably and easily, and the appearance after shaping can be immediately confirmed. Therefore, the quality of the product can be improved. Further, since it is only necessary to mount and fix it on the head of the cooling water tank, the production cost is low, and it can be easily attached to existing equipment.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view showing one embodiment of a centering adjustment device for a pipe shaping tool according to the present invention.

FIG. 2 is a partially cutaway side view as viewed from a pipe inlet side.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1 showing a state in which a slide plate is slid.

FIG. 4 is a cross-sectional view showing a state where a slide plate is slid in a direction opposite to that of FIG.

FIG. 5 is a schematic view of an apparatus for manufacturing a synthetic resin pipe.

FIG. 6 is a schematic view of a conventional synthetic resin pipe manufacturing apparatus.

FIG. 7 is a sectional view of a mold.

FIG. 8 is a front view of the pipe shaping tool.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 ... Cooling water tank, 21a ... Head, 22 ... Base plate, 23 ... Slide plate, 24 ... Transparent tube, 25 ... Shaping tool mounting flange, 26 ... Shaping tool, 27 ... Sliding means, 28 ... Guide pipe, 29 ... Pipe, 30 ... Sizing die, 31 ... Cylindrical body, 32 ... Fixed substrate, 33 ... Toggle clamp, 34 ... Stud bolt, 35 ... Pressing jig, 36
a, 36b: male screw member, 37a, 37b: female screw member, 38a, 38b: holder, 39a, 39b: long hole, 40a, 40b: slide key

Claims (2)

[Claims] 1. A centering adjustment device for a pipe shaping tool for shaping a synthetic resin pipe extruded from a mold of an extruder, wherein the base plate is provided at an inlet of a cooling water tank for cooling the synthetic resin pipe. A slide plate slidably provided on a surface of the base plate on the extruder side, a shaping tool mounting flange provided on the extruder side of the slide plate via a transparent tube, and a shaping tool mounting flange. A shaping tool, and the base plate is provided with the slide plate.
A centering adjustment device for a pipe shaping tool, comprising: a sliding means for sliding the pipe shaping tool against a pipe surface. 2. The slide means according to claim 1, wherein said slide means is formed by a pair of male screw members and female screw members provided respectively in a direction orthogonal to the axis of the base plate. Centering adjustment device for pipe shaping tool.