JP2582794Y2 - Direct extrusion press container equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container apparatus for an extrusion press, and more particularly to a container apparatus for a direct extrusion press capable of experimentally extruding short billets.

[0002]

2. Description of the Related Art FIG. 4 is a longitudinal sectional view of a conventional container device. Reference numeral 1 denotes a cylindrical container, which is detachably mounted in a container holder 2. A heater 3 is provided inside the container holder 2 on the outer periphery of the container 1, and a heat insulating material 4 is interposed between the heater 3 and the container holder 2. Also, container 1
A liner 5 is integrally provided on the inner peripheral surface of the member. A billet 6 as an extruded material is inserted into a cylindrical space in the liner 5, and is driven via a cylinder (not shown). Extruded toward the die (not shown) by the stem 7
Extrusion is performed.

In the illustrated example, the opening of the container holder 2 on the die side is smaller in diameter than the opening on the cylinder side, so that the container 1 is mounted in the container holder 2. When the container 1 is inserted, the step 1a formed near the die-side end of the container 1 abuts on the container holder 2 to regulate the advance limit thereof. A lock ring groove 8 is formed over the entire circumference in contact with the outer page (2) end of the container holder 2 near the die side end protruding from the end surface of the container holder 2 of the container 1, and the lock ring groove is formed. By inserting a lock ring 9 into the inside 8, the container 1 is prevented from retreating. Further, a container cylinder (not shown) is provided on the end platen in order to move the container 1 in the pushing direction or the opposite direction. The tip of the piston rod of the container cylinder is connected to the container holder 2 so that the container cylinder can be moved in the pushing direction. Reference numeral 10 indicates a dummy block.

[0004]

However, in such a conventional container device, the container sealing force F1 for contacting the container 1 with the die (ie, pressurized oil is introduced into the piston rod side of the container cylinder to push the container 1 to the die). The pressing force F2 is the pressing force F2 (that is, the force pressing the billet 6 loaded in the container 1 by the stem 7).
8 to 10% is required.

For this reason, a large shearing force is applied to the lock ring 9 at the time of sealing the container while the billet 6 is being extruded. Axial dimensions also increase, and it is only possible to extrude using a large container device for trial extrusion using a short billet to check the extrusion state such as the die shape and extruded material dimensions of the extrusion press by trial extrusion. There were drawbacks.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a container device of a direct extrusion press capable of trial extrusion using a short billet.

[0007]

In order to achieve the above object, a container apparatus for a direct extrusion press according to the present invention comprises: a container holder mounted on an outer peripheral surface of a container and mounted on the outer peripheral surface of the container; A stepped shape is provided between the holder and the container, and the container is brought into contact with the
Nassile force can be maintained and for short containers
Short dimensions obtained by trial extrusion of the loaded short billets
The product can be held in the bolster .

[0008]

The container holder and the container are formed in a stepped shape to maintain the container sealing force, so that the axial dimension of the container can be shortened. In addition, the short billet can be extruded, so that the die and bolster are taken out integrally with the product and the extruded shape (twist, deflection)
And it is easy to confirm the dimensions.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a container device for a direct extrusion press according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an explanatory diagram showing a state before billet extrusion according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a state after billet extrusion is completed, and FIG. 3 is an integrated removal of a die and a product after a container is opened. It is explanatory drawing which shows a state. An end platen 20 is fixedly mounted on one end of a machine base (not shown), a cylinder mounting block 22 is mounted on the other end, and an extruding cylinder 24 is fixedly mounted on the cylinder mounting block 22. The end platen 20 has a lower portion on the side facing the extrusion cylinder 24 projecting to form a die support portion (not shown). A pair of left and right die slides 26 are slidable on the die support portion in the machine width direction. is set up. A die 28 and a long-axis cylindrical bolster 30 are integrally held on the die slide 26.

The end platen 20 and the cylinder mounting block 22 are connected by a column (not shown). A container guide (not shown) is provided at a portion of the column on the end platen 20 side, and a container 32 is installed movably in the pushing direction along the container guide. In order to move the container 32 in the extrusion direction or the opposite page (4) direction, the container cylinder (container moving cylinder) 34 is provided with the end platen 20.
It is provided in. The tip of the piston rod 34a of the container cylinder 34 is connected to the container holder 36, and by moving the piston rod 34a of the container cylinder 34 forward and backward, the container holder 36 can be moved in the left-right direction in FIG. When the container 32 is opened, the container holder 36
It is fixed by a holding member 36a so as not to fall off from the second member 2.

The container 32 mounted on the container holder 36 has a billet loading hole 38. A billet loader 40 is provided on the extrusion cylinder 24 side of the container 32. The billet loader 40 is set to a retracted position from a stem advance / retreat area by a driving device (not shown).
The extrusion cylinder 24 includes a ram 42, and a stem 48 is attached to a tip of the ram 42 via a head plate 44 and an attachment member 46.

Side cylinders 50 are provided beside the extrusion cylinder 24, and their piston rods 50a are fixed to the head plate 44. Note that reference numeral 5
2 is a hydraulic oil inlet, 54 is a pressure ring, 56 is a discard, and 58 is a product.

The operation of the container device for a direct extrusion press having the above-described structure will be described. First, the die 28 and the bolster 30 are set on the die slide 26 in a state of being integrally mounted. At this time, the dummy block 10 and the billet 6 are partially lifted in the pushing direction to a position where they are received by the billet loader 40 and do not interfere with the container 32 and the ram 42. Next, the billet loader 40 is raised to the center of the press (FIG. 1). And the ram 4 of the extrusion cylinder 24
By moving the stem 2 forward, the stem 48 is advanced, and the billet 6 is loaded into the billet loading hole 38 of the container 32. Hydraulic oil is introduced from the hydraulic oil inlet 52 at the time of the forward page (5) of the ram 42.

Next, the billet loader 40 is connected to the container 32.
From the position between the cylinder and the extrusion cylinder 24. The container 32 has been moved in advance by the container cylinder 34 so as to be in close contact (contact) with the die 28. After the charging of the billet 6 is completed, the ram 42 is further advanced, the container 32 and the ram 42 are temporarily retracted, the surface of the die 28 is opened, a burp cycle is performed, and the container 32 is advanced again. Then, it is brought into close contact with the die 28.

Next, the ram 42 is advanced to strongly press the billet 6 and push it out of the die 28. When the extrusion of the short billet 6 is completed, the short product 58 obtained by the trial extrusion is held integrally with the discard 56 in the bolster 30 (FIG. 2). Thereafter, the container cylinder 34 is operated to move the container 32 away from the die 28, and the discard 26 is moved to the container 32.
Ram 4 by the side cylinder 50 from the position
2 is retracted.

Subsequently, when the die slide 26 is retracted in the machine width direction, the die 28, the bolster 30, the discard 56, and the product 58 mounted on the die slide 26 are integrated with the machine shown by a solid line in FIG. From the extrusion center position to the take-out position of the test extrusion product 58 indicated by a chain line. After that, the product 58 and the discard 56 are cut and removed by a cutting device (not shown), and the die slide 26 is again removed.
One cycle is completed by setting the die 28 and the bolster 30 on the extrusion center position with the die 28 and the bolster 30 mounted thereon.

[0018]

[Effect of the invention] As is clear from the above explanation,
The container device of the direct extrusion press according to the present invention includes a container holder provided on the outer peripheral surface of the container and attached to the outer peripheral surface of the container, and a stepped shape provided between the container holder and the container to bring the container into contact with a die. Container
And hold in a short container
Of short length obtained by trial extrusion of
Since the product can be held in the bolster , the container sealer can be received in the area of the stepped portion of the container and the container holder, so that the dimension of the container device in the axial direction can be reduced. .

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state before billet extrusion according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state at the time of completion of billet extrusion.

FIG. 3 is an explanatory diagram showing a state in which a die and a product are integrally removed after a container is opened.

FIG. 4 is a longitudinal sectional view of a conventional container device.

[Explanation of symbols]

 1, 32 Container 2, 36 Container Holder 9 Lock Ring 10 Dummy Block 20 End Platen 26 Die Slide 28 Dice 30 Bolster 34 Container Cylinder 48 Stem 56 Discard 58 Product

Claims (1)

(57) [Scope of request for utility model registration] 1. A container holder provided on the outer peripheral surface of a container and attached to the outer peripheral surface of the container, and a stepped shape is provided between the container holder and the container to form a container on a die.
It is possible to keep the container sealing force by contacting
For trial extrusion of short billets loaded in short containers
Thus, the short product obtained can be held in a bolster.
Direct extrusion press container apparatus being characterized in that a formed.