JP2002331560A - Injection-molding system for in-line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molded article blank molding method by which the productivity, the rate of operation, and the material yield are prevented from reducing when a trouble is generated after carrying equipment, and the running cost is reduced, for a production system which is constituted of an injection molding machine and other equipment by an in-line method. SOLUTION: When a trouble is generated after the carrying equipment, the molding cycle is changed. Alternatively, a standing-by process is provided during a continuous molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for discarding a molded product of an injection molding machine when a trouble occurs in a post-process facility in a system for constructing and producing a molding machine in-line with other equipment.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional method of throwing away a molding machine in an in-line system for production. In FIG.
They are throwing away from trouble occurrence to return.
This means that when the molding machine is stopped, the resin temperature is lowered in order to prevent resin deterioration. This requires time to recover. In addition, high temperature resin enters the mold by continuous operation after restarting, and the mold surface temperature rises and becomes constant, and it takes time until a good molded product is obtained. In order to eliminate this problem, the molding machine was not stopped, and a dumping operation was performed.

[0003]

In this conventional method of throwing away materials, since the molded product is thrown away until the trouble is recovered, the material yield is reduced. Further, when the molding machine is stopped, the productivity and the operation rate decrease.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a molding machine from being stopped when a trouble occurs in a post-process including a transfer facility from a molding process, to suppress a decrease in productivity and an operating rate and to reduce a running cost.

It is a further object of the present invention to reduce a decrease in material yield when a molding machine is thrown away and to reduce running costs when a trouble occurs in a post-process including a transfer facility from molding.

[0006]

SUMMARY OF THE INVENTION In order to solve these problems, the present invention provides a process for continuously molding without stopping the injection molding process when equipment trouble occurs in equipment after the injection molding process. Injection molding is performed multiple times until the molding cycle is extended to a level that does not lower the mold temperature below a predetermined temperature without deteriorating the resin material and the equipment trouble is recovered, and the molded article is placed outside the line. The trouble was recovered and the line was automatically connected again.

[0007] In addition, when a trouble occurs, the above problem can be solved by providing a standby step together with extension of the molding cycle.

In addition, when a trouble occurs, the above problem can be solved by combining a set molding cycle with a standby step without extending the molding cycle.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

However, the present invention is not limited to the following embodiments, and is not intended to limit the scope of the present invention solely thereto, but is merely an illustrative example unless otherwise specified.

As shown in FIG. 1, the injection molding machine 1 comprises a molded product take-out machine 2, a transfer equipment 3, a sputter equipment 4, a transfer equipment 5, a bonding equipment 6, and an inspection equipment 7. , A take-out machine 2 for taking out a molded product from the molding machine 1, a post-process transfer device 3, and a post-process transfer device composed of post-process equipment (4, 5, 6,.
7) When the equipment trouble occurs, do not stop the molding machine 1
The molding is continued, and the unloader 2 performs the operation of throwing out the molded product at the dumping position. Post-process (4, 5, 6, 7) The take-out machine 2 is configured to automatically transfer the molded product to the post-process when a trouble is recovered.

The invention according to claim 1 of the present invention does not stop the molding machine when an equipment trouble occurs in a process after the molding,
By changing the molding cycle at the time of continuous dumping, there is an effect that productivity, operation rate and material yield are suppressed and running cost is reduced.

According to a second aspect of the present invention, in the system of the first aspect, a standby step is provided at the time of continuous dumping, thereby suppressing a decrease in productivity, operation rate, and material yield, thereby reducing running costs. Having.

According to a third aspect of the present invention, in the system of the first aspect, by changing the molding cycle and providing a standby step at the time of continuous dumping, the productivity, the operating rate, and the reduction of the material yield are suppressed, and the running cost is reduced. It has the effect of reducing.

(Embodiment 1) In the method of throwing out molded articles according to Embodiment 1 shown in FIG. 2, when a trouble occurs after the transfer equipment during production, a waiting time of standby 1 after one-shot molding is provided, and Perform molding. Thus, the molding cycle is lengthened. The molded product molded during the occurrence of the trouble is placed in the position where the take-out machine throws away and is not placed in the subsequent process. Also,
The waiting time of standby 1 is set in advance because the deterioration time of the resin varies depending on the amount of resin heated in the molding machine, the amount of resin of the molded product, the heating temperature, the molding time, and the like. Furthermore, at the time of trouble recovery, since the molding cycle is different and the state of the resin and the surface temperature of the mold are different, a few shots are thrown away and placed in the subsequent process until a good product can be stably produced. With this method of throwing out molded products, the production cost, the operating rate, and the material yield are reduced, and the running cost is reduced.

(Embodiment 2) In the method of throwing out molded articles according to Embodiment 2 shown in FIG. 3, when a trouble occurs after the transfer equipment during production, a waiting time of standby 2 after molding several shots is provided. Is repeated. Thus, a standby step is provided during molding. The molded product molded during the occurrence of the trouble is placed in the position where the take-out machine throws away and is not placed in the subsequent process. The waiting time of the standby 2 is set in advance because the deterioration time of the resin varies depending on the amount of resin heated in the molding machine, the amount of resin of the molded product, the heating temperature, the molding time, and the like. Further, at the time of recovery from the trouble, if the state is the standby 2, since the state of the resin and the surface temperature of the mold are different, after a few shots are thrown away until the non-defective product can be stably produced, it is placed in the subsequent process. With this method of throwing out molded products, productivity, operation rate,
It is intended to suppress a decrease in material yield and to reduce the running cost.

(Embodiment 3) In the method of throwing out molded articles according to Embodiment 3 shown in FIG. 4, when a trouble occurs after the transfer equipment during production, the method of Embodiments 1 and 2 is performed. . The molding cycle is changed to + Standby 3 and a waiting time of Standby 4 is provided, and this step is repeated.
The molded product molded during the occurrence of the trouble is placed at the position where the take-out machine throws away and is not placed in a subsequent process. The waiting time of standby 3 and standby 4 depends on the amount of resin heated in the molding machine, the amount of resin of the molded product, the heating temperature, the molding time, and the like.
Since the deterioration time of the resin is different, it is set in advance. Further, at the time of recovery from the trouble, if the state of standby 4 is the state of the resin,
Since the surface temperature of the mold is different, it is placed in a post-process at a position where several shots are thrown away until a good product can be stably produced.
With this method of throwing out molded products, the production cost, the operating rate, and the material yield are reduced, and the running cost is reduced.

[0018]

As described above, according to the present invention, the productivity can be improved by changing the molding cycle and providing a standby step without stopping the molding machine when a trouble occurs in the post-process equipment including the transfer equipment rather than the molding. In addition, it is possible to obtain the effect of suppressing the reduction of the operation rate and the material yield and reducing the running cost.

[Brief description of the drawings]

FIG. 1 is an inline configuration diagram

FIG. 2 is a view showing a method of throwing away the molding of the molding machine according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a method of throwing away a molding by a molding machine according to a second embodiment of the present invention.

FIG. 4 is a view showing a method of throwing away a molding by a molding machine according to a third embodiment of the present invention.

FIG. 5 is a view showing a method of throwing away a molding by a conventional molding machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection molding machine 2 Molded product take-out machine 3 Transfer equipment 4 Sputter equipment 5 Transfer equipment 6 Laminating equipment 7 Inspection equipment

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Yabe 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. Term (reference) 4F206 AR20 JA07 JL07

Claims (3)

[Claims] 1. In a system in which an injection molding machine is constructed in-line with other equipment and is produced, if an equipment trouble occurs in equipment after the injection molding step, the molding is continuously performed without stopping the injection molding step. The injection molding is performed a plurality of times until the equipment trouble is recovered by extending the molding cycle to such an extent that the resin material is not deteriorated and the mold temperature is not lowered below a predetermined temperature, and the molded article is taken out of line. The in-line injection molding system is characterized in that the process is repeated, and when the trouble returns, the line is automatically connected again. 2. The in-line injection molding system according to claim 1, wherein when the trouble occurs, a standby step is added together with extension of a molding cycle. 3. The in-line injection molding system according to claim 1, wherein when the trouble occurs, a standby step is combined with the set molding cycle without extending the molding cycle.