JPH09193158A - Hardly processable resin exclusive device in resin raw material pellet regeneration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regenerate all of hardly processable resins (nylon, polypropylene and the others) of which the molding processing is impossible in a regeneration apparatus molding ground pieces of a molding runner or the like into pellets. SOLUTION: The kneaded strand sent out of the die (D) of a conventional known resin raw material pellet regeneration apparatus is rapidly cooled by the hardly processable resin exclusive devices (D.V) mounted at the part just near to the die (D).

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention relates to peripheral equipment for molding, which is absolutely indispensable in so-called general synthetic resin molding factories for molding. It is no exaggeration to say that this is an industrial application field that covers all fields of general synthetic resin molding plants throughout Japan.

[0002]

2. Description of the Related Art In the past, there have been conventional so-called general synthetic resin molding factories for molding, and recently, mainly aiming at resource recycling, mainly performing precision molding mainly. In the existing molding industry, various problems still exist with regard to the method of mixing crushed pieces from a runner crusher with the virgin raw material for synthetic resin molding and molding. In light of the current situation, pelletized and regenerated by an extrusion molding machine, etc., which is provided separately with crushed pieces such as runners, and after that, it is used as a so-called virgin raw material for synthetic resin molding prepared earlier. It can be said that the present situation is being reached while the method of mixing and reusing (that is, recycling) is being attempted. However, in such a so-called resin raw material pellet reclaiming device for the purpose of finishing the crushed pieces of the molding runner or the like into pellets after remolding, in fact, at present, in terms of quantity, Although it is scarce, the specific raw material resin actually exists, as it is extremely difficult to carry out the molding work for such regenerated pelletization. Regarding a specific resin raw material, in the process of regenerating pellets using a so-called general pellet regenerating device on the market, the strands kneaded and fed from the regenerating device are delivered to the outside of the device. At the same moment, it immediately expands to more than twice the die diameter,
Unlike general resin raw materials, its viscosity (Viscosi
ty) is extremely high, so it sticks to jigs and guide plates around the device die, and it does not do anything (stickiness), and eventually the operation of the playback device itself is interrupted. The situation was such that we could not help but be forced to do so. Therefore, in the general molding industry, it is sufficient to say that it is no longer possible to recycle (that is, reuse) the specified raw material resin, and it is a valuable limited resource. It is a well-known fact that we know that, after knowing, we should dispose of it and throw it away, even though we know it. The present invention has been made in view of the harsh reality that the precious earth resources that cannot be redeemed are purposefully consumed meaninglessly, and the device for its utilization is still provided. According to the proposal of the apparatus, 100% of which can be completely reused without being embarrassed even though it is configured by an extremely simple means. That is, with any conventional technique, in other words, with any type of resin material pellet regenerating device, a specific resin material [for example, natural nylon 6 series or nylon 66 series, polypropylene series, and other types of G.I. With F (that is, it refers to the raw material resin etc. containing glass fiber)], it was concluded from the head that it could not be regenerated.
In the current situation that I have decided that it is something like this that I can not do anything any longer, and it has been postponed, it is also a well-known fact, in other words, there is no technology It can be said that it is not a real thing.
With regard to the resin raw material pellet recycling apparatus, which was designed and manufactured based on such an insensitive idea and a shallow technical knowledge, etc., the spirit of effective utilization of limited natural resources, or It has become clear that the spirit of effective utilization of resources by recycling does not exist anywhere. Thus, the present invention provides: As described above, only for the specific resin raw material, the kneaded strands kneaded and sent out from the pellet regenerating device expands to a huge size more than twice at the moment when it is sent out from the device. phenomenon. . Further, in addition to the so-called physical phenomenon in which it expands more than twice, its viscosity is extremely high, etc., so it indicates the periphery of the device (that is, jigs and other guide plates, etc.). ) Is sticky and sticky regardless of (or sticks to), that is, what is the cause of various physical changes, such as, what is the cause? That is, it depends on the underlying phenomenon. However, "Why are the terms and phenomena of terms that I can describe already?
As a result of various investigations and investigations regarding the question "Is it likely to occur?", A clue to elucidation was found here. That is, in the case of so-called normal molding processing that is generally carried out, as soon as the flowable molten resin from the injection molding machine cylinder is injected and filled into the molding die cavity, that is exactly what it is. Then, they are instantly cooled and solidified, and are successively ejected as molded products. In contrast to the above-mentioned work process, in the process of a molding apparatus that recycles crushed pieces such as a molding runner as pellets,
After being kneaded in the screw press, the fluid kneading strands fed from the die attached to the press are instantly exposed to the atmosphere (that is, at atmospheric pressure) after passing through the die extrusion hole. When exposed, it passes through the guide for the strand and the special jig. The work process as described above is performed, and when comparing the two in this case, the fundamental difference is that, in the first place, the expansion phenomenon and the term This is a serious problem related to a difficult-to-process resin in a so-called resin raw material pellet reclaiming device that sticks regardless of what is said.
The present invention focuses on such a point and is taken as the problem to be solved by the present invention.

[0004]

As described in detail in the preceding paragraph, the present invention is based on the basic problem of the resin raw material pellet regenerating apparatus, which is a serious problem in the first place. From the practical point of view (that is, the physical phenomenon is most emphasized), the means for analyzing the phenomenon and for preventing the phenomenon based on the result of the analysis,
It means that we have taken steps to solve that problem.
The means for solving such a problem is that the crushed pieces of the molding runner etc. are regenerated as pellets for the normal work process, as is clear from the previous section and the contents that can be described. The following is a list of fundamentally different conditions when compared with that of the molding apparatus. That is, in the former case, upon injection and filling into the mold cavity, cooling is instantly started and immediately solidified to be a product, whereas in the latter case, it is extruded while kneading.
At a stroke, the pressure is higher than atmospheric pressure, that is, the pressure is atmospheric pressure (1
In order to solve the problem, there is a large gap between the two, in that they are released under atmospheric pressure and released into the atmosphere called the atmosphere. As a means to solve this problem, first, with the idea that the problem can be solved by approximating the molding conditions to a standard grade, the timing at which the kneaded strand is sent to the atmosphere is aimed at. At the most recent position, by proposing rapid cooling, the device of the present invention is proposed as a means for solving this problem with the idea that it can approach and approach infinitely close to a normal molding work process. It came to. According to the device of the present invention designed and manufactured under such an idea, various problems in the resin raw material pellet reclaiming device are completely cleared, and the structure is extremely simple and easy to manufacture. Therefore, the price is low, and it can be easily attached / detached to / from an existing pellet reclaiming device, etc., and the practical effect thereof is immeasurable.

[0005]

The "device for resin which is difficult to process in the resin raw material pellet regenerating apparatus" according to the present invention is constructed based on the means as described above. In the case where the pellet regenerator used in a general synthetic resin molding factory is installed side by side, as is apparent from Example 1 and FIG. 2, a metal casing << C} A drive motor (M) is provided in the inner lower part, and the other is
Each of the hot screw presses (HP) can be freely driven by the hot screw presses (HP) at appropriate places in the upper part of the metallic casing (C) through the conduction mechanism (R). As described above, the sizing die (D) desired in advance is attached to the tip of the hot screw press (HP) which is arranged and individually attached, and is attached.
In the resin raw material pellet reclaiming device (A), which is configured such that the kneaded strand (S) of desired sizing is continuously extruded through the extrusion hole (H) of the die (D), The hot screw press (HP) was attached to the front end portion of the die (D) so that the nozzle element (NE) was faced to a proper position near the extrusion hole (H). Therefore, as the resin raw material pellet reclaiming device (A), the device (D.V) dedicated to the difficult-to-process resin (that is, nylon 6 or nylon 66 and polypropylene etc.) is separately provided, For example,
When the runner crushed pieces of the hard-to-process resin are put into the hopper (P), the resin raw material pellet regenerator (A) hot screw press (HP) sequentially inserts them into the cylinder. At this time, it is melted and kneaded and sent out to the die (D) mounted at the tip. When released into the atmosphere from the extrusion hole (H) of the die (D),
The kneaded strand (S) is compressed from the pores (N) of the nozzle element (NE) provided in the device (D.V) dedicated to the difficult-to-process resin at the moment of discharge. Due to the intense air blow (B) due to air (I),
Rapidly cooled all at once, and even here difficult-to-process resins and difficulties that were previously unmanageable were kneaded into the kneaded state due to the rapid cooling effect, just like the resin materials that are usually handled. The phenomenon that the strand (S) expands and becomes huge and that it adheres to the periphery of the device is completely eliminated. The device (D.V.) dedicated to the difficult-to-process resin of the present invention is configured so that it can be easily attached and detached by using a screw or the like, so that it depends on the type of raw material resin to be used or the mixing conditions. hand,
Case-by-case, resin raw material pellet recycling device (A)
It can be attached and detached appropriately.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a "device for a difficult-to-process resin in a resin raw material pellet recycling apparatus" according to the present invention will be described with reference to FIGS. First, FIG. 1 shows a case where the "device for exclusive use of difficult-to-process resin" of the present invention is installed side by side with a pellet reclaiming device which is being used in a general synthetic resin molding factory or the like, and in FIG. 1 is an enlarged cross-sectional view with a part omitted in the vicinity of the die so that the mechanism of the kneaded strands in the kneaded state in FIG. 1 can be clarified. For example, when a molded runner crushed piece made of a raw material such as a difficult-to-process resin is put into the hopper (P), it is immediately put into the hot screw press (HP) of the resin raw material pellet regenerating apparatus (A). Therefore, the mixture is sequentially melted and kneaded in the inside of the cylinder, and is sent to the die (D) attached to the tip portion. However, when the kneaded strand (S) is discharged from the extrusion hole (H) of the die (D) into the atmosphere, the kneaded strand (S) is discharged at the moment of the discharge (D.
Due to the intense air blow (B) due to the compressed air (I) from the pores (N) of the nozzle element (NE) provided in V), rapid cooling is achieved all at once. In this regard, the difficult-to-process resin that has been uncontrollable until now does not change from the resin raw material that is generally handled, that is, the phenomenon of expansion and enormous stickiness. It means that the pellet regeneration work can be performed extremely smoothly. In addition, (L) shown in the drawing is a caster for transporting the resin raw material pellet regenerating apparatus (A) itself, and (G) is a "device for exclusive use with a difficult-to-process resin" of the present invention.
(D.V) shows an arm for attaching and detaching the resin raw material pellet recycling apparatus (A) main body.

[0007]

First of all, the most significant effect of the present invention is that, among general synthetic resin molding companies throughout Japan, it has been difficult for conventional raw materials of resin (that is, nylon 6 and nylon 66) to be processed.
In addition, for polypropylene and glass fiber of this kind, etc.), I decided from the head that it could not be regenerated, and it was difficult to do anything at all ... so I gave up reprocessing (regeneration). However, according to the proposal of the device of the present invention, there is no problem with an extremely simple configuration.
This is probably the point that 0% reproduction is possible. The device of the present invention enables effective use of limited resources, and
There are things that are immeasurable because the inventions are perfect for the needs of the resource-saving era and the effects are so great.
Further, the effects are listed as follows. . The present age is an era in which we must tackle resource and energy conservation on a global scale, so it is an invention that is correct and is perfect for the needs of the times. . With regard to item 1, a solution to the pollution problem as a polymer material may be sufficient. . It is suitable for mass production because of its simple structure, easy manufacture, and low price. . Can be installed in any of the existing resin material pellet reclaiming equipment used by general molding companies. As described above, according to the proposal of the device for exclusive use of the difficult-to-process resin according to the present invention, the practical effect thereof is too great,
It is no doubt that it can make a tremendous contribution not only from this kind of industry but also from the national point of view.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the “device for resin which is difficult to process in a resin raw material pellet reclaiming device” of the present invention.
In the commonly used pellet regenerator,
In the case where the present invention "device for difficult-to-process resin" is installed together, it is a partially cutaway partially cutaway front view,
FIG. 2 is an enlarged cross-sectional view in which a part in the vicinity of the die can be omitted so that the mechanism of the kneaded strand in the kneaded state in FIG. 1 is clear.

[Explanation of symbols]

 A resin raw material pellet reclaiming device B air blow C metallic housing D die D. V Difficult-to-process resin dedicated device G Arm H Extrusion hole I Compressed air L Caster M Driving electric motor N Pore N. E Nozzle element P Hopper R Conducting mechanism S Kneaded strand

Claims (1)

[Claims] 1. A drive motor (M) is provided in a lower portion of a metallic casing (C), and a hot screw press (HP) is provided in an appropriate place of an upper portion of the metallic casing (C). ) Of each
Through the transmission mechanism (R), the hot screw press (HP) is arranged and fixed so that the hot screw press (HP) can be driven, and at the tip of the hot screw press (HP),
The desired sizing die (D) is faced and mounted so that the extrusion hole (H) of the die (D) is provided.
Kneaded strand (S) with desired sizing
In the resin raw material pellet reclaiming device (A) configured so as to continuously extrude, the resin raw material pellet regenerating device (A) is mounted on the front end of the hot screw press (HP), and the die (D) The nozzle element (N.
E) so that the nozzle element (N.E.) can be mounted so that it can be freely mounted, and the expanded portion near the outlet of the kneaded strand (S) continuously extruded from the extrusion hole (H) of the die (D). Characterized by being configured to be rapidly cooled by air blowing from the pores (N) of E),
A device (D.V.) dedicated to difficult-to-process resin in a resin material pellet recycling device.