JPH0523309Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mold device for an injection molding machine in which a core moved by a core cylinder is attached to a mold.

[Conventional technology]

In conventional mold apparatuses in which a core is attached to a mold, the core cylinder that moves the core is supported by detachably attaching the core cylinder only to the mold.

[The problem that the idea aims to solve]

When a mold is attached to or removed from a fixed or movable platen, it is often necessary to remove the core cylinder from the mold because the core cylinder protrudes to the side of the mold. In such a case, in the conventional mold device mentioned above, the core cylinder is only attached to the mold, so
Prior to removal, the core cylinder must be supported with a crane or the like and then removed from the mold, which is a complicated and time-consuming process. Furthermore, depending on the position of the core cylinder, the tie bar may get in the way and make it difficult to hang the core cylinder, resulting in poor workability.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mold device for an injection molding machine that can quickly and efficiently attach and detach a core cylinder to a mold without using a crane or the like.

[Means to solve the problem]

To achieve the above object, the present invention includes a mold attached to a fixed platen and a mold attached to a movable platen moved along tie bars,
In a mold device for an injection molding machine in which at least one of the molds is attached with a core moved by a core cylinder, the core cylinder is attached to a fixed platen or a movable platen to which the mold to which the core is attached is attached. The core cylinder is removably attached to the mold to which the core is attached, while being supported movably in the direction of expansion and contraction of the core cylinder and a direction substantially perpendicular to the direction of expansion and contraction by a support device having a slide mechanism.

[Effect]

If it is necessary to remove the core cylinder from the mold when removing the mold from the fixed platen or movable platen or attaching the mold to them, remove the core cylinder from the mold while supporting it on the support device. . After that, to attach the core cylinder to a mold attached to a fixed platen or a movable platen, move the core cylinder using a slide mechanism in the direction of expansion and contraction of the core cylinder, or in a direction almost perpendicular to the direction of expansion and contraction, place it in the correct position, and then press it. Attach to mold.

In this way, in the mold device of the injection molding machine of the present invention, the core cylinder slides on the support device provided on the fixed plate or the movable plate in the direction of expansion and contraction of the core cylinder and in the direction that is almost perpendicular to the direction of expansion and contraction. Since it is movably supported by a mechanism in advance, there is no need to use a crane or the like to support the core cylinder, and tie bars do not get in the way. Therefore, the core cylinder can be quickly and skillfully attached to and removed from the mold.

〔Example〕

The accompanying drawings show an embodiment of the present invention, and reference numeral 1 in the drawings indicates a base. Fixed plate 2 is on top of base 1
and an end plate (not shown) are provided, and a tie bar 3 is installed between the fixed platen 2 and the end plate. A plurality of tie bars 3 (four in the figure) are provided parallel to each other and horizontally.
A movable platen 4 is attached to these tie bars 3 so as to be movable from side to side in FIG. 1 along the tie bars 3. The fixed platen 2 and the movable platen 4 have molds 5,
6 are individually and detachably attached by bolts 7, and the mold is clamped by moving the movable platen 4 by a mold clamping mechanism (not shown), as is well known.

A mold 6 attached to the movable platen 4 is attached with a core 8 and a core cylinder 9 for moving the core 8. The core cylinder 9 is removably attached to the mold 6 via a bracket 10 using fixing means such as bolts, and the piston rod 9d is inserted into the locking groove 8a of the core 8 through the locking member 9b attached to its tip.
In Figure 3, it is slid in a direction perpendicular to the page and locked.

Further, reference numeral 11 denotes a support stand, which is attached to the movable platen 4 with bolts 12. This support stand 11 includes a left-right slide mechanism 13 and an axial slide mechanism 14. The left-right slide mechanism 13 is directly attached to the support base 11 and supports the axial slide mechanism 14 so as to be movable in the left-right direction in FIG. 4 (in the direction perpendicular to the plane of the paper in FIG. 3). Further, the axial slide mechanism 14 includes a core cylinder 9
is supported so as to be movable in its axial direction, that is, in the expansion/contraction direction of the core cylinder 9 (left-right direction in FIG. 3). As shown in FIG. 6, each of the slide mechanisms 13 and 14 is made up of slide plates 13c and 14c attached to each rail 13a and 14a via a plurality of balls 13b and 14b. The rail 13a is attached to the support base 11, and the axial slide mechanism 14 is attached to the slide plate 13c of the left-right slide mechanism 13.
The core cylinder 9 is supported by the slide plate 14c of the axial slide mechanism 14. Note that the specific structure of the slide mechanisms 13 and 14 is not limited to the above in the present invention and is arbitrary. The support base 11, the left-right slide mechanism 13, and the axial slide mechanism 14 constitute a support device.

A jack block 15 is attached to a screw 16 on the movable platen 4.
A jack shaft 17 is screwed onto the jack block 15 to support the support base 11 vertically.

In addition, the code|symbol 18 is an injection nozzle.

Next, the operation of the mold device of the injection molding machine according to the present invention configured as described above will be explained.

1, 3, etc. show a state in which a core cylinder 9 supported by a support base 11 via a left-right slide mechanism 13 and an axial slide mechanism 14 is attached to a mold 6. To remove the mold 6 from the movable platen 4 in this state, first move the movable platen 4 to the right in Figure 1 to separate the mold 6 of the movable platen 4 from the mold 5 of the fixed platen 2, Core cylinder 9 for mold 6
Unfix. At this time, since the core cylinder is supported by the support device, there is no need to support its weight with a crane or the like. Next, the core cylinder 9 is moved toward the front side perpendicular to the plane of the paper in FIG. If necessary, the core cylinder 9 is moved back to the right in FIG. 3 by the axial slide mechanism 14. After operating as described above, loosen the bolts 7 and remove the mold 6 from the movable platen 4. At this time, since the core cylinder 9 is sufficiently separated from the mold 6, the core cylinder 9 does not get in the way of removing the mold 6.

Needless to say, when fixing the core cylinder 9 to the mold 6 attached to the movable platen 4, the operating procedure is reversed. When attaching the core cylinder 9 to the mold 6, if the position of the core 8 is different from the previous position of the core 8 in a horizontal plane, the core cylinder 9 is moved by the horizontal slide mechanism 13 and the axial slide mechanism 14. Adjust the amount. Also,
If the position of the core 8 is different up and down, loosen the bolt 12 and rotate the jack shaft 16 to move the core cylinder 9 up or down together with the support base 11 to change the height position of the core cylinder 9. Match core 8.

In addition, although the core 8 is provided in the mold 6 of the movable platen 4 in the figure, a mold device in which the core is provided in the mold 5 of the fixed platen 2, or both molds 5 and 6 may be used. The present invention can also be implemented in mold devices each provided with a core. In the case of a mold device in which a core is provided in the mold 5 of the stationary platen 2, the support stand 11 is attached to the stationary platen 2 directly or indirectly.
Also, the piston rod 9a of the core cylinder 9 in the figure
Although the piston rod 9a is connected to the core 8 by fitting the locking member 9b into the locking groove 8a, it is also possible to connect the piston rod 9a to the core 8 using other connecting means such as bolts.

[Effect of idea]

As explained above, the mold device of the injection molding machine according to the present invention includes a mold attached to a fixed plate,
and a mold attached to a movable platen that is moved along tie bars, and in which at least one of the molds is provided with a core that is moved by a core cylinder. is supported by a fixed platen or a movable platen to which a mold to which a core is attached is movable in the direction of expansion and contraction of the core cylinder and a direction substantially perpendicular to the direction of expansion and contraction, by a support device having a sliding mechanism, Since the core is detachably attached to the above-mentioned mold, the core cylinder cannot be removed using a crane or the like when removing the mold from a fixed platen or movable platen or attaching it to them. There is no need to go out of your way to support it. For this reason,
Core cylinder removal and installation work can be performed accurately and quickly.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention. Figure 1 is a front view of the mold device of the injection molding machine according to the present invention, and Figure 2 shows the relationship between the movable platen, the mold, the core cylinder, etc. 3 is a front view showing how the core cylinder supported on the support stand is attached to the mold, FIG. 4 is a side view of the core cylinder, and FIG. FIG. 6 is a plan view showing the relationship of the axial slide mechanism, and a sectional view showing an example of the slide mechanism. 2... Fixed plate, 3... Tie bar, 4... Movable plate, 5, 6... Mold, 8... Bolt, 9... Core cylinder, 11... Support stand, 13... Left and right sliding mechanism, 14...Axial slide mechanism.

Claims (1)

[Scope of utility model registration request] Injection molding comprising a mold attached to a fixed plate and a mold attached to a movable plate moved along tie bars, and at least one of the molds has a core moved by a core cylinder. In the mold device of the machine, the core cylinder is attached to a fixed plate or a movable plate to which a mold with a core is attached, and is supported by a support device having a sliding mechanism in the direction of expansion and contraction of the core cylinder and in a direction almost perpendicular to the direction of expansion and contraction. A mold device for an injection molding machine, characterized in that the mold device is detachably attached to the mold to which a core is attached while being movably supported by the core.