JPH04290713A - Purge resin-discharging device - Google Patents

Abstract

PURPOSE:To enable injection process to be operated perfectly automatically without human labor, while especially even in the case of the purge-resin with the low viscosity in molten state, the discharging process is surely achieved by a discharging plate. CONSTITUTION:The purge resin 14a injection-purged from a nozzle 13 is discharged into a purge resin-receiving box 10 through a movable purge shutter 5, and in the purge resin-discharging device thus made, the purge resin 14a is forcedly discharged through the discharging plate provided movably in said purge resim-receiving box 10.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a purge resin discharging device, and in particular to a device for reliably discharging purge resin with a low melt viscosity using a discharge plate, and enabling fully automatic unmanned operation of the injection process. Concerning new improvements.

0002

2. Description of the Related Art There are various purge resin discharging devices of this type that have been used in the past, and a typical one is generally adopted as shown in FIG. 3.

In FIG. 3, reference numeral 1 indicates a fixed plate installed on the bed 2, and a pair of guide rails 3 and 4 are arranged in parallel and spaced apart from each other on the front surface 1a of the fixed plate 1. There is.

Each of the guide rails 3 and 4 is provided with a longitudinally shaped purge shutter 5 bent in a dogleg shape in the vertical direction, and a pair of rollers provided on the back surface of the purge shutter 5. 6 and 7 are slidably guided by the guide rails 3 and 4. On the side part 1b of the fixed platen 1,
A moving cylinder 8 is provided, and a rod 9 of this moving cylinder 8 is coupled to the purge shutter 5, so that the purge shutter 5 reciprocates in the direction of arrow A in conjunction with the operation of this rod 9. It is configured.

[0005] A sliding chute 10 having an inclined configuration is fixedly installed on the bed 2 via a support 11, and the upper end 10a of this sliding chute 10 is positioned so as to overlap the lower end 5a of the purge shutter 5. , its lower end 10b is disposed so as to be located above a water tank 12 provided adjacent to the bed 2.

Therefore, in the above-mentioned state, when the purge resin 14a is injected from the nozzle 13 of the injection device located opposite the purge shutter 5, the purge resin 14a slides on the sliding chute 10. The user is guided into the water tank 12.

[0007]

[Problems to be Solved by the Invention] Since the conventional purge resin discharging device is constructed as described above, it has had the following problems. In other words, when purging and discharging resin with low melt viscosity, if the slope of the sliding chute is gentle (actually, a large slope cannot be obtained due to the structure), the purge resin will adhere to the sliding chute and accumulate, making it impossible to process. Something happened. In addition, since the purge resin does not slide quickly on the sliding chute, processing during continuous purging takes time. Furthermore, it has become difficult to achieve high-cycle continuous unmanned operation, which is a recent trend in injection molding machines.

The present invention has been made to solve the above-mentioned problems, and in particular, even in the case of a purge resin having a low melt viscosity, it can be reliably discharged using a discharge plate, and it can also be used to fully automatic and unmanned operation of the injection process. An object of the present invention is to provide a purge resin discharging device that enables the following.

[0009]

[Means for Solving the Problems] A purge resin discharge device according to the present invention is configured to discharge purge resin injected and purged from a nozzle into a purge resin receiving box through a purge shutter. The purge resin is forcibly discharged via a discharge plate movably provided in the purge resin receiving box.

More specifically, the discharge plate is configured to move together with the purge shutter via a moving cylinder.

More specifically, the purge resin receiving box is provided with a cooling jacket for cooling the purge resin.

More specifically, the purge shutter is movably provided on a fixed plate facing the nozzle, and the purge resin receiving box is provided on a bed located below the nozzle. It is.

More specifically, the purge resin receiving box is provided with a supply nozzle section, and the anti-adhesion agent is supplied into the purge resin receiving box through the supply nozzle section.

[0014]

[Operation] In the purge resin discharge device according to the present invention,
The purged resin injected from the nozzle of the injection device is
After hitting the purge shutter, the purge resin falls into a purge resin receiving box provided at a lower position, where purge resin for several times of continuous purging is temporarily stored. At this time, the purge resin is cooled by the refrigerant passing through the cooling jacket provided in the purge resin receiving box, thereby preventing the purge resin from spreading radially and preventing it from adhering to the purge resin receiving box. Further, an anti-adhesion agent is injected from a supply nozzle provided in the purge resin receiving box, thereby more effectively preventing the adhesion. Next, when the aforementioned purge is completed, the discharge plate provided on this purge resin receiver box moves together with the purge shutter via a moving cylinder, so the purge resin on the purge shutter resin receiver box is scraped out and removed from the water tank. supplied within.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the purge embodiment discharge device according to the present invention will be described in detail below with reference to the drawings. Note that the same reference numerals are used to describe the same or equivalent parts as in the conventional example. 1 and 2 show a conventional purge discharge device according to the present invention, FIG. 1 is a perspective view showing the overall configuration, and FIG.
2 is a sectional view of the main part of FIG. 1. FIG.

In the figure, the reference numeral 1 indicates a fixed plate provided on the bed 2, and the front surface 1 of this fixed plate 1 is
A guide rail 3 is provided at a.

The guide rail 3 has an upper end 5b of a long purge shutter 5 which is bent into a dogleg shape.
A roller 6 provided on the purge shutter 5 is slidably provided, and the purge shutter 5 is provided so as to be movable laterally.

A cooling jacket 2 is provided on the bed 2.
A purge resin receiving box 10 having a purge resin receiving box 10 is fixed, and a discharge plate 23 is movably provided within this purge resin receiving box 10. A pair of guide plates 2
1 is fixed, and a hinge portion 22 provided at the lower end 5a of this purge shutter 5 is fixed to one guide plate 21.

Side walls 10 on both sides of the purge resin receiving box 10
A, 10B are provided with a pair of guide rails 31,
Each guide plate 21 is in sliding contact with this guide rail 31, and a moving cylinder 8 is provided on the side wall 10B. The rod 9 of this moving cylinder 8 is integrally connected to each of the guide plates 21 via a connecting member 24, and in conjunction with the movement of this rod 9, the discharge plate 23 and the purge shutter 5 are moved in the direction of arrow A. It is configured so that it can be moved back and forth.

Second side wall 10B of the purge resin receiving box 10
A supply nozzle section 24 for spraying or dropping the anti-adhesive agent is provided at a lower position of the supply nozzle section 24.
An anti-adhesion agent can be supplied onto the bottom plate 10C of the purge resin receiving box 10 through the purge resin receiving box 10.

A water tank 12 is provided below the outlet section 10b of the purge resin receiving box 10.
The configuration is such that the purge resin 14a is supplied into the water tank 12 from b.

Next, in the above state, the injection device 30
The purge resin 14a injected from the nozzle 13 is as shown in FIG.
As shown, the purge resin receiving box 10 hits the purge shutter 5.
It falls and is saved. Here, if there are several purges, the first purge resin 14a is used for the first purge, the second purge resin 14b is used for the second purge, and so on.

At this time, a cooling medium is flowed into the cooling jacket 20 to promote cooling of the purge resins 14a and 14b, thereby preventing radial spread and adhesion. Furthermore, the resin receiving box 10 purges the anti-adhesion agent from the supply nozzle part 24.
It will be even more effective if it is supplied inside.

Next, when the purge is completed, by operating the movable cylinder 8, the discharge plate 23 moves while pushing the accumulated purge resins 14a and 14b.If the stroke of the movable cylinder 8 is short, , as shown in FIG. 1, the first purge resin 14a stops before the outlet part 10b,
During the next discharge, the first purge resin 14a falls into the water tank 12 by being pushed by the second purge resin 14b at the rear.

Furthermore, as described above, the third purge resin 14
c and the fourth purge resin 14d are also discharged one after another by the same discharge operation. Note that the shapes of the configurations of each part described above are merely examples, and it goes without saying that the same effects can be obtained even if the shapes are slightly changed.

[0026]

[Effects of the Invention] Since the purge resin discharging device according to the present invention is constructed as described above, the following effects can be obtained. In other words, since the discharge plate is movably installed inside the purge resin receiving box, the purge resin can be forcibly discharged, and even resins with low melt viscosity and highly adhesive resin can be discharged reliably. Since purge discharge errors do not occur, fully automatic, unmanned operation of the injection molding machine can be easily achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a purge resin discharge device according to the present invention.

FIG. 2 is a sectional view showing the main part of FIG. 1;

FIG. 3 is a perspective view showing a conventional purge resin discharge device.

[Explanation of symbols]

1 Fixed plate 2 Bed 5 Purge shutter 8 Moving cylinder 10 Purge resin receiving box 13 Nozzle 14a Purge resin 20 Cooling jacket 24 Supply nozzle part

Claims (5)

[Claims] 1. A purge resin discharge device configured to discharge purge resin (14a) injected and purged from a nozzle (13) into a purge resin receiving box (10) via a purge shutter (5), Purge resin receiving box (10)
A purge resin discharge device characterized in that the purge resin (14a) is forcibly discharged via a discharge plate (23) movably provided inside. 2. The purge resin discharge device according to claim 1, wherein the discharge plate (23) moves together with the purge shutter (5) via a moving cylinder (8). 3. The purge resin receiving box (10) is provided with a cooling jacket (20) for cooling the purge resin (14a).
Or the purge resin discharge device according to 2. 4. The purge shutter (5) is movably provided on a stationary platen (1) disposed opposite to the nozzle (13), and the purge resin receiving box (10) is attached to the nozzle (13).
4. The purge resin discharging device according to claim 1, wherein the purge resin discharging device is provided on a bed (2) located below the purge resin discharging device (13). 5. The purge resin receiving box (10) is provided with a supply nozzle section (24), and the supply nozzle section (24) is provided with a supply nozzle section (24).
4) Purge the anti-adhesive agent through the resin receiving box (10)
Claim 1 characterized in that it is configured to be supplied within the
5. The purge resin discharge device according to any one of 4 to 4.