JPH0148849B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is applicable to any type of application in which a resin-molded runner part is taken out of the mold while attached to a "stranded wire" inserted in the mold. This relates to a method that can be applied to resin molding molds.

Structure of the conventional example and its problems The conventional runner take-out method uses a take-out device 1 as shown in FIG.
This method takes out the runner out of the mold through operations such as turning and releasing the runner, and the time taken to take out the runner occupies a large proportion of the entire molding cycle.
In addition, in the method of taking out the molded product by entangling it with a wire, as shown in FIG. In addition, it is difficult to remove the resin part 7 wrapped around the wire.
There was a problem that it was difficult to reuse the wire.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and shortens the removal time.

Structure of the Invention The present invention comprises a groove formed in a mold, two stranded wires drawn from outside the mold and inserted into the groove, a reversible motor for driving the wires, and a wire strand. It consists of a pulley for pulling the wire and a part for separating the runner taken out of the mold from the wire, which can greatly reduce the time taken to take out the runner, which is extremely advantageous in shortening the overall molding cycle.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 6. In the figure, 8 is the base of the machine, 9 is the rotary type core, 10 is the platen on the injection cylinder side, 11 is the mounting plate, 12 is the runner stripper plate, 13 is the template, 14 is the runner chute, and 15 is the A plurality of pulleys are attached to the machine base, 16 is a plate that separates the runner from the wire, 17 is a reversible motor that drives the wire, 18 is a molded runner, 19 is stranded wire, and 20 is soaked into the stranded wire. 21 is a cross-sectional view of the stranded wire sandwiched in the template 13 and entangled with resin;
23 is a wire tension device using a spring attached to one of the plurality of pulleys; 24 is a thin resin for connecting the runner 18 and the stranded wire 19;

The operation will be explained below. First, between the start of mold clamping and the completion of mold clamping, the runner stripper plate 1
Injection molding is carried out with two stranded wires 19 housed in the grooves 22 of the template between 2 and the template 13. At this time, the "stranded wire" 19 is held in place by the tension device 23 without being cut. FIG. 4 shows the state in which the mold is opened after cooling is completed. In this state, the reversible motor 17 rotates forward and moves to the left in Fig. 4 with the runner 18 attached to the "stranded wire" 19, and the runner hits the separation plate 16, causing the stranded wire to soak into the wire. The resin 20 is separated from the wire and the runner falls into the chute 14. After this, the aforementioned reversible motor 17 reverses, and the wire returns to its original state.

As described above, according to this embodiment, the mold plate 13 is provided with the groove 22 and the link 24 between the runner and the groove, and outside the mold are provided a plurality of pulleys 15, a tension device 23, a runner separating plate 16, and a wire. By providing a reversible drive motor 17 and arranging the stranded wire 19, runner removal starts at the same time as the mold opens, and the wire can be moved at a very high speed corresponding to the rotational speed of the motor. The wire itself can be activated every time without any damage.

Further, the wiring of the wires and the arrangement of the reversible motor 17 and the tension device 23 according to the embodiment can be freely combined in various ways depending on the arrangement of the pulley 15, and can be arbitrarily determined without limiting the installation location. Needless to say.

Effects of the Invention As described above, since the present invention uses a motor to drive the stranded wire that has been inserted into the mold in advance, the runner can be quickly seated and taken out of the mold at high speed after opening the mold. This is extremely advantageous in shortening the overall molding cycle.
Furthermore, since the resin soaked into the stranded wire can be easily removed by simply applying a runner to the separation plate, continuous molding is possible without causing any damage to the stranded wire.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional runner take-out machine, Figure 2
Figures A and B are a plan view and a front view of a molded product when the molded product is continuously taken out using a conventional wire;
Figure 2C is an enlarged sectional view of section A in Figure 2B;
4 are a plan view and a front view of a molding machine, a mold, and a runner take-out device in one embodiment of the present invention, FIG. 5 is a sectional view of the mold, and FIG. 6A is an embodiment of the present invention. A perspective view of a stranded wire and a runner according to the method according to the example, FIG. 6B is a sectional view of the same essential parts, FIG.
It is an enlarged sectional view of the main part of figure B. 13... template, 15... pulley, 16... separating plate, 17... reversible motor, 18... runner, 19... stranded wire, 22... groove, 2
3...Tension device.

Claims (1)

[Claims] 1 Molding is performed with a stranded wire drawn from outside the mold inserted into the grooves provided at both ends of the runner of a resin molding mold, and after the mold is opened, the wire is driven out of the mold. A method for taking out runners from resin molding molds.