JPH08156058A - Vertical type mold clamping device - Google Patents

Abstract

PURPOSE: To provide a structure, by which various works such as setting work of various inserts, regulating in and cleaning and maintenance of molds and the like can be performed efficiently, surely and safely. CONSTITUTION: A bottom mold 12 is mounted through a sliding plate 20, which is horizontally movably composed of a sliding parts 21 and drawing-out devices 32, to a stationary platen 11. Besides, a top mold 14 is mounted through a turn plate 40, which is vertically pivotably composed of a pivoting shaft part 41 and a pivoting device 45, to a movable platen 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a vertical mold clamping device.

[0002]

2. Description of the Related Art For example, in plastic injection molding, there is known a vertical mold clamping device configured such that an upper mold attached to a movable platen moves up and down with respect to a lower mold attached to a fixed platen. Has been. However, in the field of plastic molding, in order to reduce the number of steps and especially to reduce costs by eliminating post-processes, various inserts such as fasteners are set in the mold at the time of molding and integrally molded with plastic molded products. It is widely practiced.

This type of vertical mold clamping device is no exception, and insert molding is performed. However, in the vertical mold clamping device, the opening and closing directions of the mold are up and down, so that the insert setting work is mechanically structural. It was a very difficult and dangerous task. Especially, it was almost impossible to set the insert in the upper mold.

Further, not only the insert setting work, but also various works such as adjustment, cleaning, and maintenance in the mold, the vertical mold clamping device is a complicated and dangerous work.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of such a situation, and in a vertical mold clamping device, various insert setting operations and adjustment, cleaning, maintenance, etc. in a mold are performed. Various work efficiently,
The object is to provide a structure that can be surely and safely performed.

[0006]

That is, the present invention provides:
A mold clamping device configured to vertically move an upper mold attached to a movable plate with respect to a lower mold attached to a fixed plate, wherein the lower mold is horizontally moved by a sliding portion and a drawing device. Is attached to the fixed plate via a slide plate configured to be movable in a direction, and the upper mold is a turn plate configured to be vertically rotatable by a rotation shaft portion and a rotation device. The present invention relates to a vertical mold clamping device, which is attached to the movable plate via

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is an overall front view of an injection molding apparatus equipped with a vertical mold clamping device of the present invention, and FIG. 2 is a side view of the mold clamping device.
FIG. 3 is a plan view showing a moving state of the slide plate, FIG.
3 is a side view as seen from the direction of arrow 4 in FIG. 3, FIG. 5 is a side view showing the turning state of the turn plate, FIG. 6 is a front view of the same turning plate, and FIG. 7 is 7-7 of FIG. It is sectional drawing of a line.

The injection molding apparatus I shown in FIG. 1 includes a vertical mold clamping apparatus 10 according to an embodiment of the present invention and a known injection apparatus 90.
Is shown. As shown, the injection device 90 and the mold clamping device 10
And are arranged side by side on the bed 91, the front side of the figure is the front side,
In other words, it is the worker side. Although not shown, the mold clamping device 1
A safety door is provided on the front of 0 for worker's safety.

The mold clamping device 10 of this embodiment comprises a fixed plate 11
The upper die 14 attached to the movable platen 13 is configured to move up and down by the operation of the main cylinder device 15 with respect to the lower die 12 attached to. Further, in the present invention, as shown in the figure, the lower mold 12 is attached to the fixed plate 11 via the slide plate 20 so as to be horizontally movable to the left side which is the side surface side of the apparatus of FIG. It is configured. At the same time, the upper mold 14 is attached to the movable plate 13 via the turn plate 40, and is vertically rotatable from the position shown in FIG. 1 to the front side, that is, the operator side.

In the figure, reference numerals 16 and 16 denote stays for connecting the fixed platen 11 and the movable platen 13, 17 denotes a hydraulic unit, and 1
8 and 19 are ejector devices for ejecting molded products from the lower mold 12, 31 is a drawer part of the lower mold 12, 32 is a drawer device, 33A and 33B are photocell switches for confirming worker's safety, 41 is a turn plate It is a rotary shaft portion of 40.

FIG. 2 is a side view showing a part of the stay 16 of the mold clamping device 10 shown in FIG. 1, but first, a relevant part of the lower mold 12 will be described. As described above, the lower mold 12 includes the fixed plate 11 via the slide plate 20.
Attached to the left side of FIG. 1, and then to FIG.
Is configured to be horizontally movable in the surface direction of the drawing.

That is, as better understood from the plan view of FIG. 3 and the enlarged side view of FIG. 4, the slide plate 20 is composed of rail members fixed in parallel to the front side and the rear side of the fixed platen 11. It is slidably held by the sliding portions 21 and 21. Then, as shown in FIG. 3, the connecting members 23, 23 are provided on the front side and the rear side of the slide plate 20.
The operating rods 33, 33 of the pulling-out devices 32, 32, which are cylinder devices, are connected to each other through the pulling-out device 3
The slide plate 20 is moved in the horizontal direction by the expansion and contraction of the operation rods 33, 33 of 2, 32.

A slide plate 20 shown in the lower half of FIG.
(20A) is a state before drawing out, that is, a state at the time of molding, and the slide plate 20 (20B) shown in the upper half is a drawn out state. In FIG. 3, reference numeral 22 is a sliding rail extended to the drawer portion 31, 32a is a forward hydraulic conduit for the drawer device 32, 32b is a reverse hydraulic conduit for the drawer device 32, and 35 is a stopper. Reference numeral 25 in FIG. 4 is a liner portion having a grease groove provided on the back surface of the slide plate 20.

Next, returning to FIG. 2, the portion related to the upper mold 14 will be described. The upper mold 14 is attached to the movable platen 13 via a turn plate 40 as shown in the figure.
The turn plate 40 includes a rotating shaft portion 41 provided on the front side of the movable platen 13 and a rotating device 45 including a cylinder device provided on the rear side of the movable platen 13 so that the turn plate 40 shown in FIG.
From the position (40A) shown in FIG. 5 to the position of the turn plate 40 (40B) shown in FIG.

That is, as can be seen from FIG. 7 which is a sectional view taken along line 7-7 of FIGS.
The front side of the bearing is a bearing portion 41 fixed to the movable plate 13 side.
a and a rotating portion 41b provided on the turn plate 40 side
And two rotating shaft portions 4 of a hinge structure including a shaft pin 41c penetrating the bearing portion 41a and the rotating portion 41b.
1, 41 are provided. On the other hand, the turn plate 40
On the back side of the rotating device 45, a connecting portion 47 with the operating rod 46 of the rotating device 45 is provided, and the extension of the operating rod 46 of the rotating device 45 causes the turn plate to reach the vertical position (40B) shown in FIG. Rotate 40.

Reference numeral 48 is a pivotal support portion of the rotating device 45 with the movable platen 13, 45a in FIG. 5 is a forward hydraulic conduit for the rotating device 45, and 45b is a backward hydraulic conduit for the rotating device 45. Further, reference numeral 49 in FIG. 7 is a clamper device provided on the movable platen 13, and the claw 49N of the clamper device engages the step portion 40S of the turn plate 40 to turn the turn plate 40.
Is fixedly held on the movable platen 13. Needless to say, when the turn plate 40 is rotated, the claw 49N of the clamper device 49 is retracted and the engagement between the turn plate 40 and the movable plate 13 is released.

Reference numeral 50 in FIG. 2 represents a fall prevention device for the movable platen 13. In this fall prevention device 50, an insertion member 53 protruding from the movable plate 13 is inserted into a U-shaped groove 52 of a locking member 51 fixedly installed on the machine base side, and a cylinder device 54 is provided.
A lock pin 55 provided so as to be able to move forward and backward is fixed by penetrating the holes of the locking member 51 and the insertion member 53.

The operation of the mold clamping device of the present invention will be described below. First, when one molding is completed as in the normal injection molding by the vertical mold clamping device, the movable platen 13 is lifted and the mold is opened as shown in FIG. When the mold opening is completed, the lock pin 5 of the fall prevention device 50 shown in FIG.
5 moves forward to fix the movable platen 13 at a predetermined elevated position of the machine base.

After the mold is opened, first, the lower mold 12 on the slide plate 20 is horizontally drawn by the operation of the drawing device 32 and moved to the drawing section 31. The molded product molded at this time is left on the fixed mold 12 side,
This molded product can be taken out of the mold by an ejector device 18 provided below the fixed platen 11 shown in FIG. Further, after the fixed mold 12 is drawn out to the drawer 31 of FIG. 1, the molded product may be taken out by the ejector device 19 installed in the drawer 31.

With respect to the lower die 12, work such as setting of inserts and cleaning of the die is carried out at this withdrawal position. It is possible to perform work on the lower die 12 without putting the body half of the body, and above all, the work can be performed safely and efficiently and reliably.

After the lower die 12 is pulled out to the drawer 31 by the slide plate 20, the upper die 14 mounted on the movable plate 13 via the turn plate 40 is rotated. When the turn plate 40 is rotated, first, the claw 49N of the clamper device 49 shown in FIG. 7 retracts to release the engagement between the turn plate 40 and the movable platen 13. Then, the actuation of the turning device 45 causes the actuation rod 46 to extend, and as shown in FIG.
Is rotated in the vertical direction from the rotating shaft portion 41 to position the upper mold 14 attached to the turn plate 40 on the operator side of the front side of the apparatus.

At this position, the operator performs work such as setting the insert in the upper mold 14 and cleaning. As can be easily understood from FIG. 6, the operator can work in a normal posture on the front side of the mold clamping device without putting the body inside the device and taking an unreasonable posture. In addition, efficient and reliable work can be performed.

After the operations such as setting of inserts and cleaning of the lower mold 12 or the upper mold 14 are completed, when returning to the next molding, first, the tan plate 40 is rotated by the rotating device 45 in the reverse order. Is operated to fix the tan plate 40 to the movable platen 13 by the clamper device 49, and the slide plate 20 is advanced to the upper part of the fixed plate 11 in the device by the operation of the drawing device 32. After returning the lower die 12 and the upper die 14 to the predetermined original positions, the drop prevention device 50 of the movable platen 13 is released and the movable platen 13 is lowered to close the mold. After this, normal injection molding is performed.

In the above-mentioned example, the injection molding of the plastic is described, but the apparatus of the present invention can be advantageously used for the press molding of rubber or thermosetting resin which easily causes burrs. Is.

[0025]

As shown and described above, according to the present invention, in the conventional vertical mold clamping apparatus, the insert setting work for the mold and the adjustment and cleaning in the mold, which are extremely complicated and dangerous, are performed. Various tasks such as maintenance can now be performed safely, efficiently, and reliably above all.

[Brief description of drawings]

FIG. 1 is an overall front view of an injection molding device equipped with a vertical mold clamping device of the present invention.

FIG. 2 is a side view of the mold clamping device of FIG.

FIG. 3 is a plan view showing a moving state of a slide plate.

FIG. 4 is a side view seen from the direction of arrow 4 in FIG.

FIG. 5 is a side view showing a turning state of a turn plate.

FIG. 6 is a front view of a state in which the turn plate is also rotated.

7 is a sectional view taken along line 7-7 of FIG.

[Explanation of symbols]

 10 Vertical mold clamping device 11 Fixed plate 12 Lower mold 13 Movable plate 14 Upper mold 20 Slide plate 21 Sliding part 31 Drawer part 32 Drawer device 40 Turn plate 41 Rotating shaft part 45 Rotating device 49 Clamper device 50 Dropping Prevention device

Claims (2)

[Claims] 1. A mold clamping device configured such that an upper mold attached to a movable platen moves up and down with respect to a lower mold attached to a fixed plate, wherein the lower mold has a sliding portion. And is attached to the fixed plate through a slide plate that is horizontally movable by a drawer, and the upper die is vertically rotatable by a rotating shaft and a rotating device. A vertical mold clamping device, which is attached to the movable plate via the turned plate. 2. The vertical mold clamping device according to claim 1, wherein the slide plate is moved to a side surface side of the apparatus main body, and the turn plate is rotated to a front surface side.