JP2530501B2 - Extrusion press equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an engaging portion between an end platen and a die in an extrusion press machine.

[Prior Art] When an extrusion press is performed by an extrusion press device, a die is brought into contact with the container in a pressed state, and a billet is loaded into the container by a stem on a billet loader. Then, the stem is further advanced, and the billet is extruded from the die as an extruded product having a predetermined shape. This stem is normally strongly advanced by a hydraulic ram.

After pushing out the billet, retract the container slightly, separate the product part and the remaining billet in the container (referred to as discard) with a cutting device, discharge the discard, and then a new billet. To load.

By the way, in recent years, there has been an increasing tendency to produce a wide variety of products in small quantities, and the dies may be frequently replaced to press-form many types of products.

Conventionally, when the die is exchanged after the extrusion of one cycle is completed and the extrusion of the next cycle is performed, the die is exchanged, and then the container is brought into contact with the die to load the billet.

Hereinafter, the configuration of such an extrusion press device will be described with reference to FIG.

FIG. 6 is a cross-sectional view taken along the extrusion direction of the extrusion press device.

Reference numeral 10 is a machine base, and an end platen 12 is fixed to one end side, a cylinder mounting block 14 is installed to the other end side, and an extrusion cylinder 16 is fixed to the cylinder mounting block 14. The end platen 12 is an extrusion cylinder 16
The lower part on the side facing to is a guide rail supporting part 18, and the guide rail supporting part 18 is provided on the guide rail supporting part 18.
20 is a horizontal direction orthogonal to the extrusion direction (hereinafter the horizontal direction orthogonal to the extrusion direction may be referred to as the machine width direction.)
Has been extended to. A die slide 22 is installed on the guide rail 20 slidably in the machine width direction,
The ridges 20a provided on the guide rail 20 and the die slide 22
And the groove 22a are engaged with each other to guide the movement of the die slide 22 in the machine width direction. The die slide 22 has a U-shape when viewed from the extrusion cylinder 16 side.
And a die 24 is attached to the die slide 22 so as to be dropped into the die attaching portion 22b from above.

A mounting block 26 is fixedly provided on an upper portion of the end platen 12 facing the extrusion cylinder 16, and the mounting block 26 is provided with a cutting device 28. The cutting device 28
Is for cutting a discard in a container 48 described later and the extruded product portion, and is provided with a cutting blade 32 that is vertically stroked by a cylinder 30. The cylinder 30 is mounted on a cylinder mounting base 36 provided on the upper part of the pillar 34, and the piston rod 30a of the cylinder 30 can be stroked downward. A connecting block 38 is provided at the lower end of the piston rod 30a, and the rod fixed to the lower surface side of the connecting block 38.
The cutting blade 32 is attached to the lower end of 40.

A key member 42 is fixed to the lower surface of the mounting block 26, and an engaging portion 22c formed on the upper surface of the die slide 22 is slidably engaged with the key member 42. Both the key member 42 and the engaging portion 22c extend in the machine width direction.

The die slide 22 is moved in the machine width direction by a cylinder (not shown) provided on the side of the end platen 12. Further, as shown in the drawing, it is possible to reciprocate between the extrusion operation position located on the back surface of the end platen 12 (the surface on the extrusion cylinder 16 side) and the die replacement position pulled out from the back surface of the end platen 12.

The end platen 12 and the cylinder mounting block 14 are connected by a column 44. A container guide 46 is externally fitted to the end platen 12 side portion of the column 44, and a container 48 is installed along the container guide 46 so as to be movable in the extrusion direction.

In order to move the container 48 in the extrusion direction, the container moving cylinder 50 is the extrusion cylinder 16 of the end platen 12.
It is provided on the opposite side. The piston rod (not shown) of the container moving cylinder 50 is the end platen 12.
Extending through and having its tip connected to the container 48. Therefore, by projecting and retracting the piston rod of the container moving cylinder 50,
48 can be moved to the left and right in FIG. The container 48 has a billet loading hole 49, and the peripheral surface of the billet loading hole 49 is constituted by a container sleeve 49a fitted into the container 48.

On the extrusion cylinder 16 side of the container 48, the billet loader 52
Is provided. The billet loader 52 has a billet mounting surface 52a on its upper surface. Also billet loader 52
The lower end side thereof is supported by a supporting member 54 and a turning device 56, and the upper end side is tiltably installed so as to swing its head in a direction perpendicular to the paper surface of FIG.

The extrusion cylinder 16 comprises a ram 58, which
Stem 60 is attached to the tip of.

Also, on the front side in the direction perpendicular to the paper, the end platen
A support table is attached to the die 12, and the die slide 22 is moved in the direction perpendicular to the paper surface along the guide rail 20 and another guide rail (not shown) provided in the same row.

Next, the operation direction of the extrusion press device configured as described above will be described.

To perform the extrusion from the state shown in FIG. 6, first, the billet 51 and the dummy block 51a are placed on the billet mounting surface 52a of the billet loader 52, and then the billet loader 52 is raised to a position where it can be extruded by the stem 60. . Then, the extrusion cylinder 16 is operated to move the stem 60 forward, and the billet 51 is loaded into the billet loading hole 49 of the container 48 together with the dummy block 51a. Then, the rotating device 56 is operated to retract the billet loader 52 from the position between the container 48 and the extrusion cylinder 16. The container 48 is moved in advance by the container moving cylinder 50 so as to come into close contact with the die 24.

After the charging of the billet 51 is completed in this way, the ram 58 is further advanced and the billet 51 is strongly pressed and pushed out from the die 24.

After the billet 51 has been pushed out, the container moving cylinder 50 is operated to move the container 48 away from the die 24. Next, the cylinder 30 of the cutting device 28 is operated and the cutting blade 32 is lowered to cut the product from the discard. After the cutting is completed, the cylinder 30 retracts the piston rod 30a and retracts the cutting blade 32 to the standby state shown in FIG.

To replace the die 24 and perform the next extrusion press,
The die slide 22 is moved onto a support table on the side of the paper sheet in the direction perpendicular to the paper surface, and is separated from the position behind the end platen 12. Then, here, the die 24 is removed from the die slide 22 and another die is mounted instead. After that, the die slide 22 is moved to the inner side in the direction perpendicular to the paper surface and returned to the extrusion position shown in FIG.

By repeating the above procedure, extrusion press molding is performed one after another while exchanging the die.

[Problems to be Solved by the Invention] In such an extrusion press machine, when an attempt is made to place the die on the die slide at the die exchange position by using the automatic feeding device, the die slides more than the length in the axial direction of the die. The die mounting length is about 3 mm (L _{1 in} Fig. 5 (b))
Since only + L ₂ is long, it is not possible to smoothly insert the die into the die slide, and if you try to insert it quickly, you must perform the die insertion position control of the automatic insertion device with high accuracy. Not only will the equipment be expensive, but the difficulty of maintenance will increase, and
It also takes a long time to insert the die into the die slide.

[Means for Solving the Problems] In the present invention, in order to solve such a problem, in an extrusion press device in which a die is held by a die slide that is movable along a side surface of the end platen on which the die is arranged. , On the side of the end platen, the die can be moved back and forth in the axial direction of the billet, and the die can be replaced after the completion of extrusion for one cycle, and the die can be extruded for the next cycle. Along with the die changer tray and the die slide that is movable between the die arrangement side surface in a column arrangement, the die mounting surface length on the die slide is 10 to 100 mm longer than the axial length of the die. It has been configured.

[Operation] Use the automatic loading device to move the die slide from the die 10
It is placed on a die slide which is enlarged by about 100 mm, preferably 30 to 60 mm, and then the working fluid is introduced into the die changer operation cylinder to move the die changer tray in the column direction to the forward limit.

After that, the cylinder engaged with the die slide is operated to move the die slide in the machine width direction, and the die is attached to the pressure ring attached to the end platen. In this case, about 10 from the side of the end platen
Since the mm pressure ring is protruding, the die slide is pressed by the bolster push cylinder during the movement of the die slide in the machine width direction, and the die slide is inserted to the normal depth.

Thus, the die is finally attached to the pressure ring and then subjected to extrusion molding by the stem.

Embodiments Embodiments will be described below with reference to the drawings.

1 to 5 show an example of carrying out an extrusion press apparatus according to the present invention, FIG. 1 is a side view of the extrusion press apparatus, FIG. 2 is a partial plan view taken along line II-II of FIG. 1, FIG. 3 is of FIG.
A side view of a part of line III-III, FIG. 4 is an operation view of a die slide on which a die is mounted, and FIG. 5 is a schematic view for explaining the present invention.

In the following description, the same or corresponding parts as those of the conventional example shown in FIG. 6 are designated by the same reference numerals. Further, in this embodiment,
The container 48, the billet loader 52, the stem 60, the extrusion cylinder 16 (pressing device), etc. are not shown.

In this embodiment, the die slide 22 has a first
As shown in the figure, the discard receiver 64 is connected by a hook 64C which can be easily released. The discard card 64
A piston rod 66a (fourth cylinder) of a cylinder 66 for moving the discard receiver 64 and the die slide 22.
(See the figure) are connected. The cylinder 66 is attached to the end platen 12 by a bracket 66A.

A support base 68 is provided on the side opposite to the cylinder 66 of the end platen 12.
Is attached, and guide rails 70 and 7 are
2 are installed. The upper surfaces of the guide rails 70, 72 are installed so as to be at the same level as the upper surface of the guide rail 20, and when the piston rod 66a of the cylinder 66 is projected, the die slide 22 becomes integral with the discard receiver 64. These guide rails 20, 70, 72 are moved. The guide rail 72 is installed on a die changer tray 74 which is movable in a direction parallel to the product extrusion direction (direction perpendicular to the paper surface of FIG. 1).
The guide rail 76 guides both sides of the guide rail. A cylinder 78 is installed on the lower surface side of the die changer tray 74.
Also, the guide rail 72 above it can be moved in the direction parallel to the product extrusion direction.

Hereinafter, a method of operating the extrusion press device of this embodiment will be described with reference to FIG.

To perform the extrusion, first, the billet 51 is placed on the billet mounting surface 52a of the billet loader 52, and then the billet loader 52 is raised to a position where it can be extruded by the stem 60. Then, the extrusion cylinder 16 is operated to move the stem 60 forward,
The billet 51 is loaded into the billet loading hole 49 of the container 48 together with the dummy block 51a. Then, the rotating device 56 is operated to move the billet loader 52 to the container 48 and the extrusion cylinder.
Withdraw from the position between 16 and. The container 48 is moved in advance by the container moving cylinder 50 so as to come into close contact with the die 24.

After the charging of the billet 51 is completed in this way, the ram 58 is further advanced and the billet 51 is strongly pressed and pushed out from the die 24. During this extrusion, the die 24 is pressed against the end platen 12.

After the billet 51 has been pushed out, the container moving cylinder 50 is operated to move the container 48 away from the die 24. Then, the cutting device 28 (first to
The cylinder 30 (not shown in FIG. 4) is operated and the cutting blade 32 is lowered to cut the product from the discard. After the cutting is completed, the cylinder 30 becomes the piston rod.
30a is retracted, and the cutting blade 32 is retracted to the initial state.

Then, the cylinder 66 connected to the discard receiver 64 is operated and the piston rod 66a thereof is moved forward. The receiving port 64b of the discard card receiver 64 is the billet loading hole 4
After moving the discard receiver 64 to a position corresponding to 9, operate the stem 60 to drop the discard into the receiving opening 64b. After that, the piston rod 66a of the cylinder 66 is further projected, and the die slide 22 is moved to the two-dot chain line 2 in FIG.
Move to the 2A position. After the die slide 22 is carried out to the outside in this way, the die 24 held by the die slide 22 is replaced with another die. In this embodiment, the die slide 22 is replaced with the die 24. However, only the die 24 may be replaced.

Here, the difference between the present invention and the conventional example will be described with reference to FIG.

FIG. 5 (a) is a sectional side view when a die is mounted on the die slide of the present invention, and FIG. 5 (b) is a sectional side view when the die is mounted on a conventional die slide.

Conventionally, when replacing a die 24 with another die 24,
It was performed at the die exchange position shown in the figure. That is, the die 24 is diced using a crane or the like not shown.
When placing 24 on the die slide 22 while suspending it, as shown in FIG. 5 (b), the effective placement length B (the length between the die back guide plate 21 and the die slide tip convex portion 21a ) Effective allowance difference (BA) for placing the die 24 having the effective length A on the die slide 22 having the size
Has only L ₁ + L ₂ (about 3 mm), and it takes considerable care to place the die 24 on the die slide 22 quickly, and carelessness may damage the die 24 and the die slide 22. Therefore, if the die 24 is loaded by using another die automatic loading device having high accuracy, the equipment cost of the loading device itself becomes expensive.

Therefore, in the present invention, as shown in FIG. 5 (b), the die 24 having the same effective length A as in the conventional case is
Die slide 22 having effective placement length B '(length between die back guide plate 21 and die slide tip convex portion 21a)
If you try to put on the effective permissible difference (B'-A) is L ₁ '+ L _2' (about 10 to 100 mm) about the two, since preferably larger 30 to 60 mm, at the time of die replacement, The die 24 can be quickly placed on the die slide 22 by a simple automatic loading device, and then the die reacher tray.
The cylinder 78 installed on the lower surface side of the 74 is operated to move the die hitch tray 74 in parallel with the product extruding direction as shown in FIG. 4 (1).
It is moved to the position shown in.

Here, when it is attempted to mount on a die slide 22 having a size of the effective mounting length B ', if the effective allowable difference (B'-A) between the two is 10 mm or less, the conventional example is effective. There is not much difference between the tolerances of 3 mm, and it is necessary to take great care in quickly placing the die 24 on the die slide 22 when inserting the die.

On the contrary, when the effective allowable difference (B'-A) is 100 mm or more, the dimension of the die slide 22 in the axial direction of the die slide 22 (the direction perpendicular to the axial direction of the die slide 22) is 100 m from the current dimension.
If it is more than m, the die slide 22 itself cannot be slid in the width direction of the machine by contacting or abutting the adjacent current device, and the die slide 22 itself becomes large, so the material cost and the manufacturing cost are high, Further, the stroke of the push cylinder 130 becomes longer, which is uneconomical.

Next, the newly replaced die 24 is a composite type, and the inner die 24T is loosely fitted in the outer die 24S, and the die 24 is also loosely fitted in the die slide 22. . Therefore, as shown in FIG. 2 or FIG. 4 (2), the die slide 24 is moved in front of the push ring 130,
Push the inner mold 24T with the push cylinder 130. As a result, the inner die 24T is fitted into the outer die 24S to a normal depth, and the die 24 is also pushed into the die slide 22 to a regular state.

Thus, as shown in FIG. 6, even when the pressure ring 23 is projected about 10 mm from the side surface of the end platen 12 toward the container 48 side, the die mounted on the die slide 22 is
It is possible to easily mount the 24 on the pressure ring 23 in a normal state while avoiding the projection of the pressure ring 23.

At the same time when the die 24 is mounted on the pressure ring 23, the rod of the push cylinder 130 is retracted. After that, move the die slide 24 to the initial position,
If you move the Daiichi Enger tray 74 to the left in the figure,
After returning to the initial state, the die 24 is exchanged.

While exchanging this die and plate,
Do the following: That is, the stem 60 from which the discard has been pushed out is retracted to the state shown in FIG. 6, and then the billet loader 52 is erected. Then, after placing another billet on the billet mounting surface 52a, the billet loader 52
And then the ram 58 is advanced to load the billet into the billet loading hole 49 by the stem 60. Next, the billet loader 52 is rotated in the falling direction to be retracted from the position between the container 48 and the extrusion cylinder 16.

After the exchanged die 24 is introduced to the extrusion position, the container moving cylinder 50 is then operated to bring the container 48 into contact with the die 24. Then, the ram 58 is advanced and the stem 60 pushes the billet to perform extrusion molding.

By repeating the above procedure, extrusion press molding can be performed one after another while exchanging the die and the plate.

[Effects of the Invention] As described above, according to the extrusion press device of the present invention, the die slide is moved by about 10 to 10 mm from the effective length in the axial direction of the die.
By increasing the effective mounting length of 100 mm, it is possible to quickly insert the dies into the die slide and change the dies with the die inserter.
The time from the extrusion press operation of the cycle to the extrusion press of the next cycle is extremely short, which improves the product cycle. Further, even if the die automatic loading device is simpler, the target operation can be sufficiently performed, so that the structure of the die loading device is simplified and the maintenance becomes easy.

[Brief description of drawings]

1 to 5 show an example in which an extrusion press device according to the present invention is implemented, and FIG. 1 is a side view of the extrusion press device, and FIG.
The figure is a partial plan view taken along the line II-II in FIG. 1, and FIG.
Partial side view of line I-III, FIG. 4 is an operation diagram of a die slide on which a die is mounted, FIG. 5 is a schematic diagram for explaining the present invention, and FIG. 6 is a view along an extrusion direction of an extrusion press device. The cross-sectional views are shown below. 12 …… end platen, 16 …… extrusion cylinder, 22 …… die slide, 23 …… pressure ring, 24 …… die, 48 …… container, 60 …… stem, 130 …… push cylinder, A …… die Axial length, B, B '... Length of die mounting surface on die slide.

Claims (1)

(57) [Claims] 1. An extrusion press apparatus in which a die is held by a die slide that is movable along the side of the end platen on which the die is arranged, and the die is moved laterally of the end platen in the axial direction of the billet. Yes, 1
After the extrusion of the cycle is completed, the dies are exchanged, and the die slides that are movable in between the die changer tray and the side surface of the die arrangement are arranged in a row on a die changer tray having a structure capable of extruding the next cycle. At the same time, the extrusion press device is characterized in that the length of the die mounting surface on the die slide is made 10 to 100 mm longer than the axial length of the die.