JP2010115664A - Container device of extruding press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container device of an extruding press in which temperature in the longitudinal and radial directions of a container is equalized and controlled. <P>SOLUTION: In the container device of the extruding press, which is provided with a heating means on the outer peripheral surface and the end face, divided into an upper part and a lower part in the radial direction and in a plurality of places in the length direction, the temperature of which is made freely controllable respectively in each divided zone and also which has a cooling means in the inside, the cooling means in the inside of the container is provided so that the temperature is freely controlled respectively independently in the upper part and the lower part into which the container is divided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a container device used for an extrusion press of a metal such as aluminum or an alloy thereof.

Generally, when a billet such as a metal material such as aluminum or an alloy material thereof is extruded by an extrusion press apparatus, a billet heated to a predetermined temperature is loaded into a container, and the container is pressed against a die to drive the stem forward. As a result, the molded product is extruded from the outlet of the die.
By the way, the container temperature of the extrusion press can be controlled uniformly for the purpose of preventing the temperature of the billet from being lowered or the temperature at the center of the container from rising to expand the inner diameter of the container and entrain air into the product. It has been demanded.

For example, Patent Document 1 discloses a container whose temperature can be controlled to a predetermined temperature over its entire length.
The conventional container shown in Patent Document 1 is provided with a main heater over substantially the entire length of the container tire, and rod-like auxiliary heaters are inserted and provided on both end faces of the container tire. In addition, a cooling groove is provided on the outer peripheral surface of the container sleeve in a spiral shape over substantially the entire length thereof. Further, the container tire is provided with temperature detection members at a plurality of locations in the length direction, and is configured to detect the temperature of each portion in the length direction and control the temperature of each portion to a predetermined temperature based on the detected signal. ing.

The container is heated by energizing the main heater and the auxiliary heater, and when it is desired to lower the temperature, the refrigerant is selectively supplied to the spiral cooling groove to cool a predetermined length range of the container. It is said that the temperature can be controlled freely.
Thus, the conventional container is provided with a heating means and a cooling means, and is intended to control the temperature of each part in the container length direction.
JP-A-63-49320

  However, in the prior art, the outer peripheral surface of the container tire is heated from the outside and the end surface portion is heated from the inside, while the coolant is supplied to the cooling groove in the outer peripheral portion of the container sleeve to cool the container tire. The temperature in the length direction is controlled to a predetermined temperature. In this method, the amount of heat is accumulated on the upper side of the container, the temperature is higher than the lower side, and the control temperature non-uniformity generated in the radial direction of the container cannot be eliminated.

In order to make the temperature in the longitudinal direction of the product uniform when extruding the product using the soaking billet, the temperature in the length direction and the radial direction of the container is controlled to a predetermined uniform temperature with respect to the billet temperature. However, in the prior art, the temperature non-uniformity in the container radial direction could not be solved.
The subject of this invention is made in view of the said conventional problem, and is providing the container apparatus of the extrusion press which can equalize and control the temperature of the longitudinal direction and radial direction of a container.

The container apparatus of the extrusion press according to claim 1 of the present invention is provided with heating means on the outer peripheral surface and the end surface, and the container is divided into an upper part and a lower part in the radial direction and a plurality of parts in the length direction, and the division is performed. The temperature of each zone can be freely controlled, and in the container device of an extrusion press having a cooling means inside the container, the cooling means can be independently temperature controlled independently at the upper and lower parts divided in the radial direction. It is characterized by being provided.
A container device for an extrusion press according to a second aspect of the present invention is the container device according to the first aspect, wherein an arcuate refrigerant passage is formed inside each of the divided upper and lower container peripheral walls, and the refrigerant passage Temperature control was made possible by providing passage holes that communicate with the refrigerant passage and the outside of the container at both ends and at a plurality of locations in the length direction, and control the supply and discharge of the refrigerant to and from the refrigerant passage. It is characterized by.

The container device of the extrusion press according to claim 3 is the invention according to claim 2, wherein the external connection port of the passage hole provided at both ends of the refrigerant passage is either the refrigerant supply passage or the refrigerant discharge passage. The passage holes provided at a plurality of locations in the length direction of the refrigerant passage are connected to the refrigerant supply passage and the refrigerant discharge passage through the electromagnetic valve, and are connected in the container length direction. The temperature detecting means is provided at a plurality of locations.

The container device of the extrusion press according to the present invention divides the container into two in the radial direction (divided into two equal parts) and divides the container into a plurality of portions in the length direction, and heating means that can control the temperature of each divided zone independently. Since the cooling means is provided, partial heating and cooling can be performed. For this reason, the nonuniformity of the temperature in the length direction and the radial direction of the container, particularly in the upper part and the lower part of the container, is eliminated, and the container temperature can be controlled to a uniform and predetermined set temperature. And by this control, since the billet temperature during extrusion is made uniform, the temperature in the length direction of the product can be made uniform, and the product quality is stabilized.
In addition, heating and cooling time can be shortened by heating and cooling the container as a whole, and it is easy to change to any extrusion temperature when extruding different alloys and has the effect of improving the productivity of the extrusion press. .

Embodiments of a container device for an extrusion press according to the present invention will be described below. In the following description, general techniques, known techniques, and general-purpose techniques are omitted.
First, the form for implementing this invention is demonstrated based on drawing. 1 and 2 relate to an embodiment for carrying out the present invention, and FIG. 1 is an overall configuration diagram of a container apparatus according to the present embodiment. FIG. 2 is a view for explaining the relationship between the refrigerant passage and the refrigerant passage for supplying and discharging the refrigerant through the passage hole.

As shown in FIG. 1, the container device 10 includes a container tire 12, a container sleeve 13, and a container liner 14, a container 11 in which billets are loaded, a container holder 15 that holds the container 11, and a container tire 12. A main part is constituted by the main heaters 31a to 31f and the sub heaters 32a to 32d for heating the outer peripheral surface and both end surfaces.
The main heaters 31a to 31f for heating the outer peripheral surface of the container tire 12 are not directly attached to the container tire 12, but a gap is provided, and the auxiliary heaters 32a to 32d for heating both end surfaces of the container are provided on the inner peripheral portion of the container holder 15. The container tire 12 is attached to both end faces. The temperature adjustment of the container tire 12 is performed in six zones divided into three parts at both ends and a center part in the length direction and two parts in the upper and lower parts in the radial direction. The main heaters 31a to 31f and the sub heaters 32a to 32d are The temperature is controlled by controlling the power supplied to the heater independently for each zone.

In the upper and lower outer peripheral surfaces of the container sleeve 13, arcuate refrigerant passages 41a and 41b that are independent of each other are provided over substantially the entire length. The refrigerant passages 41 a and 41 b are formed as flow paths in a state in which the container sleeve 13 is inserted into the container tire 12.
The container tire 12 is provided with a plurality of passage holes 42a to 42h for supplying and discharging refrigerant from the outside of the container 11 to the refrigerant passages 41a and 41b corresponding to the independent heating zones, and the plurality of passage holes 42a to 42h. External connection ports 45a to 45h are provided on the outer peripheral surface of the container tire 12, respectively.
Further, in the container tire 12, thermocouples 21 a to 21 f as temperature detecting means for detecting the temperature of the container 11 and a thermocouple 22 for detecting the maximum temperature of the container 11 are inserted into the container tire 12. 23a to 23f and 24 are inserted.

  As shown in FIG. 2, the refrigerant passages 41 a and 41 b formed on the outer peripheral surface of the container sleeve 13 communicate with the refrigerant supply passage 51 and the refrigerant discharge passage 52 through passage holes 42 a to 42 h formed in the container tire 12. It has a configuration. The refrigerant is supplied to the refrigerant passage 41a at the upper portion of the container sleeve 13 from the refrigerant supply passage 51 through the electromagnetic on-off valves 52a to 52c and the passage holes 42a to 42c on the refrigerant supply side. The refrigerant is discharged from the refrigerant discharge passage 52 via the passage holes 42b to 42d and the electromagnetic discharge valves 53a to 53c on the refrigerant discharge side. Reference numerals 45 a to 45 d indicate connection ports with a refrigerant supply / discharge passage serving as external piping provided in the container tire 12. The container sleeve 13 shown in FIG. 2 is an expanded outer peripheral surface.

Refrigerant supply to the refrigerant passage 41b provided in the lower part of the container sleeve 13 is performed from the refrigerant supply passage 51 through the electromagnetic on-off valves 52d to 52f and the passage holes 42e to 42g on the refrigerant supply side. Further, the refrigerant is discharged from the refrigerant discharge passage 52 through the passage holes 42f to 42h and the electromagnetic on-off valves 53d to 53f on the refrigerant discharge side. Reference numerals 45 e to 45 h denote connection ports with the refrigerant supply / discharge passage serving as external piping provided in the container tire 12. The direction of refrigerant supply and discharge is indicated by arrows in FIG.
The refrigerant is supplied from the refrigerant supply source 50 to the refrigerant supply passage 51, and dry air with a low dew point is preferably used as the refrigerant. Dry air can be easily obtained by passing the compressed air compressed by the air compressor through an air dryer.

In the present embodiment, as described above, the temperature control is performed in a total of six zones in which the container is divided into three in the length direction and divided into two in the radial direction.
The first zone is on the die side above the container, and the main heater 31a and the sub heater 32a are used for heating. The temperature is detected by the thermocouple 21a. When the temperature of this zone exceeds the set value, the solenoid on / off valves 53a and 54a are excited to open the passage and supply the refrigerant from the passage hole 42a. The upper part on the die side of the container is cooled by discharging from 42b.
The second zone is the central part at the top of the container, and the main heater 31b is used for heating. The temperature is detected by the thermocouple 21b. When the temperature of the zone exceeds the set value, the electromagnetic on-off valves 53b and 54b are excited to open the passage and supply the refrigerant from the passage hole 42b to supply the passage hole 42c. The central part of the container is cooled by discharging from the container.

The third zone is on the stem side above the container, and the main heater 31c and the sub heater 32b are used for heating. The temperature is detected by the thermocouple 21c. When the temperature of this zone exceeds the set value, the solenoid on / off valves 53c and 54c are excited to open the passage and supply the refrigerant from the passage hole 42c to supply the passage hole 42d. The upper part of the stem side of the container is cooled by discharging from the container.
The fourth zone is on the die side below the container, and the main heater 31d and the sub heater 32c are used for heating. The temperature is detected by the thermocouple 21d. When the temperature of the zone exceeds the set value, the electromagnetic on-off valves 53d and 54d are excited to open the passage and supply the refrigerant from the passage hole 42e to supply the passage hole 42f. The lower part of the container die side is cooled by discharging from the container.

The fifth zone is the lower center of the container, and a heater 31e is used for heating. The temperature is detected by the thermocouple 21e. When the temperature of this zone exceeds the set value, the solenoid on / off valves 53e and 54e are excited to open the passage and supply the refrigerant from the passage hole 42f to supply the passage hole 42g. The central part of the container is cooled by discharging from the container.
The sixth zone is on the lower stem side of the container, and the main heater 31f and the sub heater 32d are used for heating. The temperature is detected by the thermocouple 21f. When the temperature of this zone exceeds the set value, the solenoid on / off valves 53f and 54f are excited to open the passage and supply the refrigerant from the passage hole 42g to supply the passage hole 42h. The lower part on the stem side of the container is cooled by discharging from the container.
As described above, the temperature of each zone is made uniform by controlling the heating means and the cooling means so as to be a predetermined set temperature.

When the material of the extrusion billet is changed and the temperature control set value is set lower than the current operating temperature, for example, the refrigerant is supplied to the refrigerant passage from the end surface to the end surface of the container. The whole container can be cooled by exciting the electromagnetic on-off valves 52a and 52d on the refrigerant supply side and the electromagnetic on-off valves 53c and 53f on the refrigerant discharge side shown in FIG.
Temperature detection in the case of cooling the entire container is performed by the thermocouple 51. When the detected temperature is higher than a predetermined cooling temperature set value, the heating to the main heaters 31a to 31f and the sub heaters 32a to 32d is detected. Energization is cut off.

As described above, the container device of the extrusion press according to the present invention divides the container into two equal parts in the vertical direction and also divides the container into a plurality of places in the length direction so that the temperature controllable heating means, cooling means, and temperature detection. Means were provided so that the temperature of each zone could be controlled independently. When the detected temperature is lower than the set value, heating is performed by the heater, and when the detected temperature is higher than the set value, the refrigerant is supplied to the refrigerant passage for cooling, and the container in the length direction and the radial direction of the container Eliminate uneven temperature. In this manner, the container temperature is divided into a plurality of zones, and heating and cooling are performed for each zone, whereby the container temperature can be controlled uniformly and at a predetermined set temperature. Thereby, since the billet temperature during extrusion is made uniform, the temperature in the length direction of the product can be made uniform, and the quality of the product is stabilized.
In addition, heating and cooling time can be shortened by performing overall heating and cooling, and it is easy to change to an arbitrary extrusion temperature when extruding different alloys, thereby improving the productivity of the extrusion press.

It is a whole block diagram of the container apparatus by this embodiment. It is drawing explaining the relationship between a refrigerant path and a refrigerant path which supplies and discharges a refrigerant via a passage hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container apparatus 11 Container 12 Container tire 13 Container sleeve 14 Container liner 15 Container holder 21a-21f, 22 Thermocouple 23a-23f, 24 Insertion hole 31a-31f Main heater 32a-32d Sub heater 41a, 42b Refrigerant passage 42a-42h Passage Hole 50 Refrigerant source 51 Refrigerant supply passage 52 Refrigerant discharge passage 53a-53f Refrigerant supply side electromagnetic on-off valve 54a-54f Refrigerant discharge side electromagnetic on-off valve

Claims (3)

Heating means are provided on the outer peripheral surface and the end surface, the container is divided into an upper part and a lower part in the radial direction and a plurality of parts in the length direction, and the temperature of each of the divided zones can be freely controlled, and the inside of the container is cooled. In an extrusion press container device having means,
A container device for an extrusion press, wherein the cooling means is independently provided at an upper part and a lower part divided in the radial direction so that the temperature can be controlled independently.   An arcuate refrigerant passage inside each of the upper and lower container peripheral walls, and a passage through which the refrigerant is communicated with the refrigerant passage and the outside of the container at both ends of the refrigerant passage and in the longitudinal direction. The container device of the extrusion press according to claim 1, wherein a temperature is freely controlled by providing a hole and controlling supply and discharge of the refrigerant to and from the refrigerant passage.   External connection ports of the passage holes provided at both ends of the refrigerant passage are connected to either the refrigerant supply passage or the refrigerant discharge passage through electromagnetic valves, and are provided at a plurality of locations in the length direction of the refrigerant passage. The extrusion according to claim 2, wherein the passage hole is connected to a refrigerant supply passage and a refrigerant discharge passage through an electromagnetic valve, and temperature detection means are provided at a plurality of locations in the container length direction. Press container device.

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