JPH11188419A - Aligning method for extruder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the alignment of the extruder easily and precisely. SOLUTION: A laser beam 10a is irradiated parallel with a guide from a laser transmitter 10 which is installed in an end platen 1 to the core of a cross head 6, and the core is aligned by moving/adjusting a steam, a container 8 and a die 5 in all directions so that the laser beam 10a may be received in the core. The other way of the alignment is that the laser beam 10a is irradiated from the laser transmitter 10 installed in the end platen 1 so that it may fit the core of the cross head 6 and in this condition, the displacement between a reception position and the core of the laser beam 10a is measured by transferring the cross head 6 to the end platen 1. Further, the tilting angle of the fide 3 is detected from the displacement and transfer distance of the cross head 6, and the laser beam 10a is displaced by tilting angle so that the laser beam 10a may be parallel to the guide 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of aligning a stem, a container, and a die of an extruder for extruding an aluminum mold from an aluminum ingot.

[0002]

2. Description of the Related Art As shown in FIG. 1, an extruder reciprocates along a guide 3 with a base 4 having an end platen 1, a ram 2, and a guide 3, a die 5 attached to the end platen 1, and a ram 2. Moving crosshead 6 and its crosshead 6
And a container 8 attached thereto. In this extruder, for example, an aluminum ingot called a billet is inserted into a container 8, the crosshead 6 is moved by the ram 2, the aluminum ingot is pressed against the die 5 by the stem 7, and the aluminum mold is extruded.

For the above-described extruder, the core accuracy of the stem 7, the container 8, and the die 5 greatly affects the accuracy of the extruded product and the life of the extruding tool. On the other hand, the crosshead 6 is the guide 3
And the container 8 moves along the guide 3 via a container holder (not shown).
By performing extrusion molding a plurality of times, the above-described core accuracy deteriorates due to wear of the guide 3 and the like.

For this purpose, the crosshead 6 and the container 8 can be adjusted vertically and horizontally with respect to the guide 3, and the stem 7 can be adjusted vertically and horizontally with respect to the crosshead 6. Can be adjusted vertically and horizontally with respect to the end platen 1 and aligned every plural times of extrusion molding.

For example, the parallelism of the guide 3 is measured, and the distance from the guide 3 to the core of the stem 7, the distance from the guide 3 to the core of the container 8, and the distance from the guide 3 to the core of the die 5 are determined by the operator. Measure using a scale or caliper, and based on the measured value and parallelism, stem 7, container 8,
The die 5 is vertically and horizontally moved and adjusted for centering.

[0006]

The above-mentioned centering operation is very troublesome. In particular, since the temperature of the container 8 and the die 5 becomes as high as 450 ° C. to 900 ° C. due to hot extrusion, the distance from the core of the container 8 and the die 5 to the guide 3 is measured in consideration of linear expansion. The task is difficult.

Accordingly, an object of the present invention is to provide a method of aligning an extruder which can solve the above-mentioned problems.

[0008]

According to a first aspect of the present invention, a light is radiated from an end platen 1 side toward a core of a crosshead 6 in parallel with a guide 3, and a stem 7 is provided so that the light is received by the core. This is a centering method of an extruder in which the container 8 and the die 5 are moved up and down and left and right so that the core of the die 5, the core of the container 8, the core of the stem 7 and the core of the crosshead 6 match.

According to a second aspect of the present invention, in the first aspect, a laser beam 10a is radiated from a laser transmitter 10 attached to the end platen 1 so as to match the center of the crosshead 6, and the crosshead 6 is brought to an end in this state. The laser beam is moved toward the platen 1 to measure the deviation between the reception position of the laser beam 10a and the core, and the inclination angle of the guide 3 is detected based on the deviation and the moving distance of the crosshead 6, and the laser transmitter 10 is rocked up and down. This is a method of aligning an extruder in which the laser beam 10a is parallel to the guide 3 by moving and moving up and down to displace the laser beam 10a by the tilt angle.

According to a third aspect of the present invention, in the first or second aspect, the X-direction scale 12 and the Y-direction scale 1 with the origin 14 as a boundary.
3 is a core of an extruder that measures the misalignment by mounting the laser receiver 11 capable of measuring the misalignment between the laser light receiving position and the origin 14 by aligning the origin 14 with the core. It is a matching method.

[0011]

According to the first aspect, since the stem 7, the container 8, and the die 5 can be aligned by moving the stem 7, the container 8, and the die 5 up, down, left, and right with reference to light, the alignment can be easily performed.
It can be performed with high accuracy.

According to the second aspect, the vertical displacement of the crosshead 6 is measured, and the guide 3 is moved based on the vertical displacement.
Of the laser transmitter 1 according to the detected inclination angle.
0 swings up and down and moves up and down to guide the laser beam 10a to the guide 3.
Therefore, the laser beam 10a can be irradiated in parallel with the guide 3 easily and with high accuracy.

According to the third aspect of the present invention, the deviation between the receiving position of the laser beam 10a and the core can be accurately and quickly detected by the laser receiver 11, so that the alignment can be performed in a short time and with high accuracy. .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a laser transmitter 10 is mounted on an end platen 1, a stem 7 is removed from a crosshead 6, and a laser receiver 11 is mounted. As shown in FIG. 3, the laser receiver 11 has a scale 12 in the X direction (vertical direction) and a scale 13 in the Y direction (left and right direction) in a shape to be fitted to the stem 7 mounting portion of the crosshead 6. The origin 14 is attached so as to match the center of the crosshead 6.

The laser transmitter 10 is adjusted vertically and horizontally to irradiate the laser beam 10 a to the origin 14 of the laser receiver 11.

The laser beam receiving position of the laser receiver 11 is detected in a state where the ram 2 is extended and the crosshead 6 is advanced as shown by the phantom line in FIG.

The vertical displacement of the crosshead 6 (the guide 3) is determined based on the detected laser beam receiving position and the moving distance of the crosshead 6.
Are calculated. For example, as shown in FIG. 4, when the laser beam receiving position is shifted upward by a from the origin 14, the inclination angle θ with respect to the parallelism of the guide 3 is calculated from the equation of tan θ = a / L.

The laser transmitter 1 has the calculated inclination angle θ.
The laser beam 10a is swung up and down and moved up and down to tilt the laser beam 10a with respect to the guide 3 by the tilt angle θ.

By repeating the above operation, the laser beam 10a is made parallel to the guide 3, and the laser transmitter 10 is fixed to the end platen 1 at that position (see the phantom line in FIG. 4). If the laser beam 10a cannot be made parallel to the guide 3 even in this manner, the crosshead 6 is moved up and down and adjusted to be parallel.

As shown in FIG. 5, a stem 7 is attached to the crosshead 6 and a laser receiver 1 is attached to the tip of the stem 7.
Attach 1. This laser receiver 11 is shaped to fit on the outer peripheral surface of the stem 7 as shown in FIG.

The laser beam 10a of the laser transmitter 10 is irradiated on the laser receiver 11 while rotating the stem 7 in the above-described state, and the stem 7 is moved up, down, left and right so that the receiving position coincides with the origin 14. I do.

As shown in FIG.
a, the laser receiver 11 is attached to the
The container 8 is moved up and down and left and right so that the receiving position of the laser beam 10a coincides with the origin 14. The laser receiver 11 is attached to one end of the inner hole 8a and adjusted, and then attached to the other end of the inner hole 8a for adjustment.

Similarly, the laser receiver 1 is inserted into the inner hole 5a of the die 5.
The die 5 is vertically and horizontally moved and adjusted so that the laser light 10a reception position of the laser receiver 11 coincides with the origin 14.

When the alignment is completed as described above, the mounting position of the laser transmitter 10 is set on the end platen 1, the posture is stored, and the laser transmitter 10 is removed and extruded.
After the extrusion molding process is repeated a plurality of times, the laser transmitter 10 is attached to the end platen 1 at the set position and the stored posture described above, and the centering is performed in the same manner as described above. Note that light such as a lamp may be applied instead of the laser beam 10a. In this case, the lamp or the like is moved and adjusted in the same manner as described above, and the light is irradiated in parallel with the guide 3.

[0025]

According to the first aspect of the invention, since the stem 7, the container 8, and the die 5 can be vertically and horizontally moved and adjusted with reference to the light, the alignment can be easily performed. It can be performed with high accuracy.

According to the second aspect of the present invention, the vertical displacement of the crosshead 6 is measured, the inclination angle of the guide 3 is detected based on the vertical displacement amount, and the laser transmitter 10 is detected in accordance with the inclination angle. Is vertically oscillated and moved up and down to irradiate the laser beam 10a in parallel with the guide 3, so that the laser beam 10a can be radiated in parallel with the guide 3 easily and with high accuracy.

According to the third aspect of the present invention, the deviation between the receiving position of the laser beam 10a and the core can be accurately and quickly detected by the laser receiver 11, so that the centering operation can be performed in a short time and with high accuracy. Can be.

[Brief description of the drawings]

FIG. 1 is a front view of an extruder.

FIG. 2 is an operation explanatory diagram for measuring the parallelism of a guide.

FIG. 3 is a perspective view of a laser receiver.

FIG. 4 is an explanatory diagram of detection of a guide inclination angle.

FIG. 5 is an explanatory view of a centering operation of a stem 7;

FIG. 6 is a perspective view of a laser receiver.

FIG. 7 is an explanatory view of the centering operation of the container.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... End platen, 2 ... Ram, 3 ... Guide, 4 ... Base, 5 ... Die, 6 ... Crosshead, 7 ... Stem, 8 ... Container, 10 ... Laser transmitter, 10a ... Laser light, 1
1 ... Laser receiver.

Claims (3)

[Claims] 1. A crosshead 6 from an end platen 1 side.
The stem 7, the container 8, and the die 5 are moved up and down and left and right so that the light is received by the core, and the core of the die 5 and the core of the container 8 are irradiated. And an extruder in which the core of the stem 7 and the core of the crosshead 6 are aligned. 2. A laser beam 10a is emitted from a laser transmitter 10 attached to the end platen 1 so as to coincide with the center of the crosshead 6, and in this state, the crosshead 6 is moved toward the end platen 1 and the laser beam is emitted. The deviation between the receiving position of 10a and the core is measured, the inclination angle of the guide 3 is detected based on the deviation and the moving distance of the crosshead 6, and the laser transmitter 10 is swung up and down to move the laser beam 10a up and down. 2. The centering method for an extruder according to claim 1, wherein the laser beam is made parallel to the guide by displacing the laser beam by an inclination angle. 3. An X-direction scale 12, Y, with an origin 14 as a boundary
A laser receiver 11 having a direction scale 13 and capable of measuring a deviation between a laser beam receiving position and an origin 14 is located at the origin 14.
The centering method for an extruder according to claim 1 or 2, wherein the center misalignment is measured by mounting the core in alignment with the core.