JPH059709U - Extrusion material cutting device in extrusion device - Google Patents

Abstract

(57) [Summary] [Objective] The waste material 13a is prevented from remaining after cutting the butt end 9 into the die 3, the bolster 5, and the sub-bolster 5 '. [Structure] By moving a die ring 11 with respect to a bolster 18, an extruded material 13 is cut at a mating surface of these members.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting device for extruded material in an extrusion device.

[0002]

[Prior Art]

 Conventionally, an extruder is used to form a specific mold material using a soft metal such as an aluminum alloy or a copper alloy. Various types have been proposed for this extrusion device, one of which is shown in FIG. 3 in which a billet 2 is inserted into a container 1, which is pressed by a plunger and extruded through a die 3. There is a material to form the material 4. The pressing force of the die 3 is transmitted to the platen 6 via the bolster 5 and the sub bolster 5 ', and the die 3 and the bolster 5 are held by the die ring slide holder 7.

When the extruded material 4 having a predetermined cross-sectional shape is manufactured and then the extruded material having a different cross-sectional shape is manufactured, only the die 3 or the die 3 and the bolster 5 must be replaced together. In this case, the container 1 is retracted, the butt end 9 is cut and removed by the bat shear 8, and then the die ring holder 7 is moved upward as shown in FIG. It is performed by moving in a direction orthogonal to and cutting (shearing) at the A portion.

[0004]

[Problems to be solved by the device]

 By the way, in the cutting structure of the extruded material in the extrusion device as described above, since the extruded material 4 is cut (sheared) at the trailing edge of the sub bolster 5 ′, the extruded material 4 is placed in the die 3, the bolster 5, and the sub-bolster 5 ′. The rear end of the waste material remains as the waste material 4 '. For this reason, not only the yield is deteriorated because a large amount of waste material 4'is generated with respect to the extruded material 4, but also waste material 4'which penetrates the inside of the die 3, bolster 5, and sub-bolster 5'is removed It requires extra work and is troublesome. When removing this waste material 4 ', as shown in Fig. 5, the bolster 5 is pushed up by the rod 10a against the die 3 and the sub-bolster 5'and divided into small pieces 4a, 4b, 4c, which are then separated into the die 3 and the like. It was troublesome to take out the work from the inside. Especially when only the die 3 is replaced, it may take time to start the next process due to its removal work, or in order to avoid this, even if the bolster 5 can be used together with the die 3 to be replaced, a separately prepared die may be used. There was a problem that the bolster had to be replaced as a set.

[0005]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned conventional problems, in which a billet inserted in a container is extruded through a die held by a die ring to form an extruded material, In an extrusion device in which a pressing force is received by a platen via a bolster, a die ring holding the die is supported by a die ring holder, and a bolster is supported by a bolster holder, and the die ring holder is extruded by an extrusion material. Provided is an extruded material cutting device configured to cut an extruded material at a mating surface of the die ring and the bolster by disposing a shear cylinder that moves in a direction orthogonal to the direction.

More specifically, a shearing cylinder in which a die ring holding a die is supported by a die ring holder and a bolster is supported by a bolster holder, and the die ring holder is moved in a direction orthogonal to the extrusion direction of the extruded material. To place. Then, the die ring presser and the bolster presser that come into contact with the die ring and the bolster are arranged, and the die ring holder is moved while the bolster is fixed to cut the extruded material. It is a device.

[0007]

[Work]

 In the above-mentioned configuration, after forming a predetermined extruded material, the die ring holder is moved to cut the extruded material between the die ring and the bolster, and then the extruded material is fed out to remove the extruded material in the bolster. The rear end moves to the outside. After that, the die ring holder and the bolster holder are moved from the center of the press to the outside of the press to replace only the die or the die and the bolster as necessary.

[0008]

【Example】

 An embodiment of a cutting structure for extruded material in an extrusion device according to the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 11 denotes a die ring having a die. The die ring 11 is held by a die ring holder 12, and the die ring holder 12 holds the die ring upward, specifically, at a direction orthogonal to the extrusion direction of the extruded material 13. The tip of the rod 15 of the dicing shear cylinder 14 that moves upward is abutted, and the die ring retainer 16 is disposed further above.

On the other hand, behind the die ring 11, a bolster 18 and a sub bolster 19 are provided which make the pressing force acting on the die ring 11 substantially uniform and transmit it to the platen 17. The bolster 18 and the sub bolster 19 are held by a bolster holder 20, and a bolster retainer 21 is provided on the upper portion. The die ring holder 12 and the bolster holder 20 are supported by the die slide holder 22. In addition, 23 is a bat end and 24 is a batshire. In the above configuration, the billet 2 inserted into the container is pressed and extruded through the die supported by the die ring 11 to form the extruded material 13.

When manufacturing extruded materials having different cross sections, first, the bat shear 24 is operated to cut the butt end 23. After releasing the die ring retainer 16, the die ring shear cylinder 14 is operated to move the die ring 11 upward. Of course, at this time, the bolster 18 provided adjacent to the die is fixed by the bolster retainer 21. Therefore, since the die ring 11 moves upward with respect to the fixed bolster 18, the extruded material 13 is cut at the joint B between the die ring 11 and the bolster 18 (Fig. 2).

After that, the extruded material 13 is fed by a feeding device (not shown) and discharged from the bolster 18 and the sub-bolster 19. Then, while the die ring 11 is supported by the die slide holder 22, the die ring 11 is horizontally moved and replaced.

[0012]

[Effect of the device]

 As is clear from the above description, the extruded material cutting structure in the extruding device according to the present invention allows the extruded material 13 to be cut at the joint B between the die ring 11 and the bolster 18. Therefore, the portion to be the waste material 13a has the length of the die ring 11, and the waste material is extremely small, so that the yield is improved. In addition, since the extruded material 13 is discharged from the bolster 18 and the sub-bolster 19, the waste material does not remain in these members as in the conventional device. The effect is that it can be lost.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a cutting structure for extruded material in an extrusion device according to the present invention.

FIG. 2 is an explanatory view of a cut state of an extruded material in an extrusion device according to the present invention.

FIG. 3 is a cross-sectional view of a main part of an extrusion device having a conventional extruded material cutting structure.

FIG. 4 is a drawing of a conventional extruded material cutting structure taken along line XX in FIG.

FIG. 5 is a plan sectional view showing a state in which waste material is cut into small pieces and taken out from a die or the like.

[Explanation of symbols]

1 Container 2 Billet 3 Die 4, 13 Extruded Material 5, 18 Bolster 6, 17 Platen 7 Die Ring Slide Holder 8, 24 Batsha 9, 23 Butt End 10 Die Slide Shear Cylinder 11 Die Ring 12 Die Ring Holder 14 Die Shear Cylinder 19 Sub bolster 20 Bolster holder 21 Bolster retainer 22 Die slide holder.

Claims (1)

[Claims for utility model registration] [Claim 1] A billet inserted in a container is extruded through a die held by a die ring to form extruded material, and the pressing force of the die ring is passed through a bolster. In an extrusion device that is supported by a platen, a die ring that holds the die is supported by a die ring holder, a bolster is supported by a bolster holder, and the die ring holder is moved in a direction orthogonal to the extrusion direction of the extruded material. An extruded material cutting device configured to cut the extruded material at a mating surface of the die ring and the bolster, in which a shear cylinder is disposed.