JPH09174643A - Feed device for fluid or the like for vertical injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a pipe for flowing a fluid, wiring thereof and the like from being brought into contact with other components. SOLUTION: A turntable 2 which bottom forces 1, 1 is set horizontally and rotatably with its central shaft 5 as its center under a top force 4 moving up and down by a mold clamping device. Through-holes 20b running through the turntable 2 from to top to the bottom are formed on the turntable 2 on the peripheral section of the central shaft 5, and the upper ends of through-holes 20b are connected to the bottom forces 1 and the like on the turntable 2 though distributors 13, while the lower ends of the through-holes 20b are connected to a feed source 11 of the fluid or the like through the distributors 13 and the like. The distributors 13 are rotated together with the bottom forces 1 and the turntable 2 when the turntable 2 is rotated, and not moved relatively to the turntable 2, and the distributors are not brought into contact with other components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supplying a cooling medium such as water or air, hydraulic oil, electricity or the like to a pair of lower molds of a vertical injection molding machine or auxiliary devices of the lower molds.

[0002]

2. Description of the Related Art As a vertical injection molding machine, as shown in FIG. 3, a turntable 2 having a pair of lower molds 1 and 1 is used.
Below the upper die 4 attached to the movable plate 3, it is provided so as to be horizontally rotatable around one tie bar (central axis) 5.
A mold clamping device (not shown) such as a hydraulic cylinder lowers the upper mold 4 together with the movable platen 3 to clamp the lower mold 1 directly below,
It is known to inject a resin from an injection device (not shown) into the cavities of the molds 1 and 4 to form a molded product. The movable platen 3 is supported by three divers 5, 6 and 6, and the turntable 2 is rotatably supported by a fixed platen 7.

In the vertical injection molding machine described above, a cooling medium such as water or air, or hydraulic oil is provided in the lower die 1 on the turntable 2 or an auxiliary device of the lower die 1 (hereinafter, lower die etc.). When supplying electricity or the like (hereinafter, fluid or the like), a relay member 12 connected to a supply source 11 of the fluid or the like is provided on the movable plate 3, and the relay member 12 and the lower mold 1 or the like can be connected. A fluid body 13 such as a flexible pipe or an electric wire is connected to supply fluid or the like to a lower die or the like. In some cases, another relay member may be provided on the turntable 2 and the fluid or the like may be supplied to the lower die 1 or the like via the two relay members.

In addition to the above, a rotary type vertical injection molding machine (for example, a table 2 which is rotatable in one direction) (for example,
Japanese Patent Publication No. 59-21295, Japanese Patent Publication No. 1-54174
There is also a supply device using a hollow rotary joint, such as Japanese Patent No.

[0005]

In the fluid supply device shown in FIG. 3, there is a circulation body 13 on the turntable 2 that is sufficiently long so as not to hinder the rotation of the turntable 2. As the turntable 2 rotates, the degree of bending is changed in various ways, and the turntable 2 moves. Therefore, there is a problem in that the turntable 2 may come into contact with other devices and hinder the operation.

Further, in the latter device for supplying fluid or the like, since the life of the sealing material provided in the hollow rotary joint is relatively short, it is necessary to replace the sealing material frequently, and maintenance is troublesome. There is a problem.

[0007]

In order to solve the above-mentioned problems, in a device for supplying fluid or the like of a vertical injection molding machine according to claim 1, a turntable provided with a pair of lower molds is a mold clamping unit. In a vertical injection molding machine provided horizontally rotatably about a central axis below an upper mold that is moved up and down by a device, the turntable is provided above and below the turntable around the central axis. To form a through hole, and the upper end of the through hole is connected to the lower mold or the like on the turntable through the first flow body, and the lower end of the through hole is connected to the supply source of fluid or the like. It was configured to communicate via two distributors.

The through hole can be formed directly in the turntable, or the through hole can be formed in a central member which is fitted between the turntable and the central shaft and fixed to the turntable.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a fluid supply device for a vertical injection molding machine according to the present invention. Note that FIG.
The same members and the like are given the same reference numerals and detailed description thereof will be omitted.

Reference numeral 20 is a central member. Central member 20
Shows a plurality of through holes 20b around the center hole 20a (four holes are shown in the figure, but only two holes are shown in the figure).
A diver 5 used as a central shaft and inserted through the central hole 20a to secure the turntable 2 with the fixing bolt 2
It is fixed integrally with 1. The through holes 20b are vertically penetrated and arranged at equal intervals.

The upper end of the through hole 20b is connected to one end of the flow body 13, and the other end of the flow body 13 is connected to the lower mold 11. Further, the lower end of the through hole 20b is connected to the supply source 11 of fluid or the like via the flow body 22.

When the fluid or the like supplied to the lower mold 1 (including the fluid returned from the lower mold 1 to the supply source 11) is water, air, or hydraulic oil, the flowers 13 and 22 are pipes. Needless to say, when the fluid or the like is electric, it is an electric wire. When the flow bodies 13 and 22 are pipes, the pipes 13 and 22 are connected to the through hole 20b, the lower mold 1 or the supply source 11 by generally known connecting fittings. When the distributors 13 and 22 are electric wires, the electric wires 13 and 2
2 is inserted into the through hole 20b and the end is made into the lower mold 1 and the supply source 1.
1 may be connected, but usually, the lower mold 1 and the supply source 11
The electric wire connected to is connected to the end of the electric wire inserted in the through hole 20b (the end of the through hole) with an appropriate plug.

The number of through holes 20b is not limited to four, and there may be more or less than four. Ancillary equipment of the lower mold 1 includes a cylinder that operates a core and the like, an electromagnet, and the like.

FIG. 2 shows another embodiment of the present invention in which a center hole 2a and a through hole 2b are directly formed in the turntable 2. The other structure is the same as that of FIG.

In the apparatus for supplying fluid or the like of the vertical injection molding machine according to the present invention, the fluid or the like is supplied from the supply source 11 to the lower mold 1 through the through holes 2b and 20b, and from the lower mold 1. Returned to supply. Distributor 13 on turntable 2
Since it rotates together with the lower mold 1 and the turntable 2, it may be significantly shorter than the conventional supply device, and further, when the turntable 2 rotates, it curves and moves to contact other devices and members. Never. Therefore, turntable 2
Various operations above, such as taking out the molded product from the lower mold 1,
It is possible to smoothly insert components into the lower mold 1 without any trouble. Further, since it is not necessary to use a member such as a sealing material of the hollow rotary joint, which is easily worn by relative rotation, liquid such as water or hydraulic oil is unlikely to leak and maintenance is easy. The distribution body 22 rotates together with the turntable 2, but since it is under the turntable 2, it has little adverse effect on the other.

[0016]

As described above, in the apparatus for supplying fluid or the like of the vertical injection molding machine according to the present invention, the turntable having a pair of lower molds is moved up and down by the mold clamping device. In a vertical injection molding machine provided horizontally below the center axis so as to be horizontally rotatable, a through hole is formed in the turntable around the center axis so as to penetrate vertically through the turntable. The upper end of the through hole is connected to the lower die or the like on the turntable via the first flow body, and the lower end of the through hole is connected to the supply source of fluid or the like via the second flow body. Since it is configured as described above, it is possible to minimize the length of the distributor on the turntable and avoid contact with other devices or members of the distributor when the turntable is rotated. it can. Therefore, various operations on the turntable can be smoothly performed, and the entire structure can be simplified. Further, it is possible to prevent leakage of water, oil, etc. more reliably, and there is an effect that maintenance becomes easy.

When the through holes are formed directly on the turntable, the number of parts can be reduced. In addition,
Forming a central member that is fitted between the turntable and the central shaft and fixed to the turntable facilitates processing of the through hole and the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a fluid supply device for a vertical injection molding machine according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of a fluid supply device for a vertical injection molding machine according to the present invention.

FIG. 3 is a cross-sectional view showing a fluid supply device of a conventional vertical injection molding machine.

[Explanation of symbols]

 1 Lower Mold 2 Turntable 2a, 20a Central Hole 2b, 20b Through Hole 4 Upper Mold 5 Tie Bar (Center Shaft) 6 Diver 11 Supply Source 13 Flow Body 20 Center Member 21 Fixing Bolt 22 Flow Body

Claims (3)

[Claims] 1. A turntable provided with a pair of lower molds is provided below an upper mold which is moved up and down by a mold clamping device.
In a vertical injection molding machine that is horizontally rotatably provided around a center axis, a through hole is formed in the turntable around the center axis so as to penetrate vertically through the turntable. An upper end of the hole is connected to a lower die or the like on the turntable via the first flow body, and a lower end of the through hole is connected to a supply source of fluid or the like via the second flow body. A device for supplying fluid, etc., to a vertical injection molding machine. 2. The fluid supply device for a vertical injection molding machine according to claim 1, wherein the through hole is formed directly on the turntable. 3. The vertical injection molding machine according to claim 1, wherein the through hole is formed in a central member which is fitted between the turntable and the central shaft and fixed to the turntable. Fluid supply device.