JPH0716646A - Extrusion equipment - Google Patents

Abstract

PURPOSE:To extrude extruded material of good quality where variance on the quality is suppressed by detecting the billet temperature right before the billet is loaded in a container, obtaining accurate billet temperature data with high reliability accordingly and executing appropriate temperature control of succeeding billets. CONSTITUTION:A billet loader 7 is provided with temperature detecting sensors 10 and the temperature of a billet B received on the billet loader 7 is detected. The succeeding billets B are controlled to be heated to the proper temperature by a billet heater 2 by feedback control based on these detected temperature data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion equipment used for extruding an extruded material made of metal such as aluminum.

[0002]

2. Description of the Related Art For example, in extrusion processing of aluminum, the temperature of a billet heated by a billet heater is measured in order to extrude an extruded material having good quality such as strength and pressure-bonding property. In addition, the heating condition of the subsequent billet is corrected to the optimum one.

Conventionally, the temperature of such a heated billet is measured by measuring the end face temperature of the billet being heated by a billet heater, or extruding the billet discharged from the billet heater for temperature measurement. The transportation to the machine was temporarily stopped, and the worker measured the temperature using a contact thermometer.

[0004]

However, the billet heated by the heater changes its temperature by heat radiation or heat conduction until it is loaded into the extruder container. Therefore, the billet is measured as described above. There is a fact that the temperature data measured as described above does not match the actual extrusion temperature because it was charged into the extruder container in a temperature state different from the billet temperature. It was Therefore, the subsequent extrusion by the billet becomes the extrusion by the temperature-controlled billet based on such inaccurate temperature data that does not actually match, and as a result, unexpectedly, there are defects in quality such as strength and crimpability. There has been a problem that an extruded material may be extruded.

In view of the above-mentioned conventional problems, the present invention can obtain reliable billet temperature data and perform proper temperature control of the succeeding billet, so that the quality of the extruded material is good. It is an object of the present invention to provide an extrusion equipment that can be extruded into a material.

[0006]

For the above-mentioned purpose, the first
The gist of the invention is an extrusion facility characterized by comprising a temperature detecting means for detecting the temperature of a billet received by a billet loader.

A second invention is the same as the first invention, wherein a plurality of temperature detecting means are provided, and these temperature detecting means are arranged in the billet length direction, and are arranged at a plurality of positions in the billet length direction. The gist is the extrusion equipment that is supposed to detect temperature.

[0008]

According to the first aspect of the invention, the temperature of the billet is detected by the billet loader immediately before being loaded in the container, and reliable and accurate billet temperature data can be obtained. Therefore, the data can be effectively used for the temperature control of the subsequent billet, and the extruded material is extruded into a good quality product.

Moreover, since the temperature detecting means detects the temperature of the billet received by the billet loader, the space for disposing such temperature detecting means can be secured without fail, and in addition, the billet in the loader is inevitable. The temperature can be detected by utilizing the temporary rest time, that is, the operating time of the loader, so that the temperature can be detected with high reliability, and the extension of the extrusion stroke time due to the temperature detection can be avoided.

In the second aspect of the invention, more detailed billet temperature data is obtained by detecting the temperature at a plurality of points in the length direction of the billet, and based on this, the temperature control of the subsequent billet is performed. More precise.

Of course, since the temperature of the billet received by the billet loader is detected,
A space for deploying a plurality of temperature detecting means can be secured comfortably.

[0012]

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

In the extrusion equipment shown in FIG. 1, (1)
Is an extruder, (2) is a billet heater, and (3) is a controller.

In the extruder (1), (5) is a container, (6) is a stem, and (7) is a billet loader.

The billet loader (7) is a receiver (8) having an arcuate receiving surface (8a) for receiving the billet (B).
And a billet receiving position shown by a solid line in the figure and a loading position into the container (5) shown by an imaginary line in FIG. 1 by swinging the arm member (9). It is designed to be able to make a round trip.

Receiving (8) of this billet loader (7)
In addition, the temperature of the billet (B) received by the receiving surface (8a) of the billet (B) at a plurality of points in the length direction Corresponding number of contact-type temperature sensors (10) measured at 3 locations
(10) (10) is provided along the billet length direction, and its temperature is automatically detected while the billet (B) is received by the receiving surface (8a). A non-contact sensor such as a radiation thermometer may be used as the temperature detection sensor.

The billet heater (2) comprises a plurality of unit heaters (2a) (2a) arranged in the billet length direction.
Equipped with (2a), each unit heater (2a)
(2a) By controlling (2a) individually, the billet (B) can be heated in the same heating mode or in different heating modes in the length direction.
Although not shown, the billet (B) heated by the billet heater (2) is transported to a billet receiving position in the loader (7) by being transported by a conveyor or the like through a predetermined transport path. It is supposed to be handed over to the recipient (8).

The control unit (3) is a computer control unit having a built-in control program, and controls according to the flow chart of FIG. That is, when the billet (B) is received by the receiver (8) of the billet loader (7) and the temperature t is detected by the temperature sensors (10), (10), (10), as shown in FIG. ,
The detection signal is read in step S1, and the measured temperature t is compared with the set extrusion temperature t0 in step S2 to determine whether t≤t0 -5 ° C. In this determination, if the determination that the conditional expression is satisfied is repeated twice, that is, two billets that are adjacent to each other are repeated,
In step S3, a temperature control signal for increasing the billet heating temperature by 10 ° C. is output to the heater (10). If the conditional expression is satisfied in this determination, the process proceeds to step S4, and then it is determined whether t.gtoreq.t0 + 5.degree. In this determination, if it is determined twice that the conditional expression is satisfied, that is, if the two billets that are adjacent to each other are repeated, the process proceeds to step S5, and the heater (10)
A temperature control signal for lowering the billet heating temperature by 10 ° C. is output. If this conditional expression is satisfied in this determination, the process proceeds to step S1, the same control as described above is performed based on the temperature detection signal of the next billet, and this is repeated for each billet.

Of course, in this embodiment, a plurality of temperature sensors (10), (10) and (10) are provided to measure the temperature at a plurality of points in the length direction of the billet (B), and the billet is also used. The heater (2) also has multiple unit heaters (2a)
(2a) (2a) is provided so that the billet (B) can be heated in different manners in the lengthwise direction.
The above judgment is made based on the temperature signal at each position, and fine heating control is performed for each succeeding billet (B) by each unit heater (2a) (2a) (2a) of the billet heater (2). Will be.

In the above-mentioned extrusion equipment, the billet (B) heated by the billet heater (2), carried out from the heater (2) and conveyed, and received by the receiver (8) of the billet loader (7) is After receiving, the temperature detection sensor (10) (10) (while the stationary on the receiver (8) until it is moved to the container (5) side by the stem (6) at the container loading position. The temperature is detected in 10). Then, the detection signal is read by the control device (3), and when the temperature of the billet (B) is too high or too low with respect to the set extrusion temperature, the control device (3) A control signal for changing the heating mode is sent to the billet heater (2), and the subsequent billet (B) is heated by the billet heater (2) in a direction that matches the set extrusion temperature.

In this way, the above-mentioned extrusion equipment detects the temperature of the billet (B) received by the billet loader (7) of the extruder (1) so as to detect the temperature. ) Is provided, the billet temperature immediately before loading into the container (5) is detected, and therefore reliable and accurate billet temperature data can be obtained, and the billet heater (2) is used for the subsequent billet (B). It is possible to control the heating to an appropriate temperature by the method (1), and it is possible to extrude an extruded material of good quality in which variation in quality is suppressed.

Moreover, a necessary and sufficient space for installing the temperature sensors (10), (10) and (10) can be secured around the billet loader (7) or its surroundings. It does not cause any difficulty.

In addition, the temperature of the billet (B) can be detected by
Since it is possible to use the inevitable temporary rest time of the billet (B) being received by the loader (7), that is, the operating time of the loader (7), etc., the temperature can be detected with high certainty and operating stability. In addition to being able to perform the extrusion, the extrusion can be performed with good productivity without delay in the line flow of the extrusion due to the temperature detection.

Furthermore, in the above embodiment, a plurality of temperature sensors are provided, and these are arranged in the billet loader (7) in the length direction of the billet (B) so that the billet (B) extends in the length direction. Since it is designed to detect the temperature of multiple points at the same time, detailed temperature data of multiple points in the length direction of the billet (B) can be obtained, and based on this, the temperature control of the subsequent billet (B) can be improved. It is possible to extrude a high-quality extruded material which can be precisely manufactured and whose variation in quality is further suppressed.

Of course, even when a plurality of temperature sensors are used as described above, a sufficient space for installing the billet loader or its surroundings can be secured, and these temperature sensors (10) (10) (10) Can be incorporated into extrusion equipment without structural difficulties.

Further, in the above-mentioned embodiment, since the temperature of the subsequent billet (B) is automatically feedback-controlled by using the controller (3), it is possible to contribute to the automation of the extrusion equipment. .

[0027]

According to the above, the extrusion equipment according to the first invention is provided with the temperature detecting means for detecting the temperature of the billet received by the billet loader.
The billet temperature immediately before container loading is detected, so reliable and accurate billet temperature data can be obtained, and proper temperature control of subsequent billets can be performed, resulting in good quality with suppressed variations in quality. The extruded material can be extruded.

In addition, since the temperature detecting means detects the temperature of the billet received by the billet loader, the space for disposing such temperature detecting means is naturally secured, which makes it difficult to construct the extrusion equipment. In addition, the temperature of the billet is detected by using the inevitable temporary rest time of the billet being received by the loader, that is, the operating time of the loader, etc. The temperature stability can be maintained at a high level, and the delay of the line flow due to the temperature detection can be avoided, so that the extrusion can be performed with high productivity.

Further, in the extrusion equipment according to the second aspect of the invention, a plurality of temperature detecting means are provided, which are arranged in the length direction of the billet to detect the temperature at a plurality of points in the length direction of the billet. As a result, detailed temperature data at multiple points in the length direction of the billet can be obtained.
Based on this, it is possible to more accurately control the temperature of the subsequent billet, and it is possible to extrude a good-quality extruded material in which variations in quality are further suppressed.

Of course, since the temperature of the billet received by the billet loader is detected, a space for disposing a plurality of temperature detecting means is naturally secured, and these temperature detecting means are constructed in the extrusion equipment. It can be installed easily.

[Brief description of drawings]

FIG. 1 is a perspective view showing an extrusion equipment according to an embodiment.

FIG. 2 is a flowchart of control performed in the same equipment.

[Explanation of symbols]

 7 ... Billet loader 10 ... Temperature detection sensor B ... Billet

Claims (2)

[Claims] 1. Extrusion equipment comprising a temperature detecting means for detecting the temperature of a billet received by a billet loader. 2. A plurality of the temperature detecting means are provided, the temperature detecting means are arranged along the length direction of the billet, and the temperature is detected at a plurality of points in the length direction of the billet. Item 1. The extrusion equipment according to item 1.