JP2002059419A - Pellet reproduction apparatus equipped with x-axis/y-axis two-dimensional direction cooling length regulation device for strand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pellet reproduction apparatus equipped with an X-axis/ Y-axis two-dimensional cooling length regulation device for a strand, in consideration of various actual difficult problems such that large-scaled cooling equipment such as an air blower, a water bath, a winder or the like are absolutely necessary and inevitable in a conventional known resin raw material pellet reproduction apparatus and, therefore, a large-scaled floor area for installation must be ensured in the vicinity of an injection molding machine and an effective work place must become narrow and the investment amount required in these large-scaled equipments becomes high. SOLUTION: A length adjusting bar (17) freely movable in an X-axis direction (I) and a head roller element (19) freely movable in the Y-axis direction (II) crossing the X-axis direction at a right angle are arranged in order to arrange a kneaded (ST), which is sent out of a hot screw press (11) in a kneaded state, at the proper palace in a frame stand (15). By this constitution, cooling length can be easily and rapidly set in the X-axis two-dimensional direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to peripheral equipment for molding, which is absolutely indispensable in a so-called general synthetic resin molding factory for performing molding. It is no exaggeration to say that the industrial application field covers all general synthetic resin molding factories throughout Japan.

[0002]

2. Description of the Related Art Heretofore, in the so-called general synthetic resin molding factory which performs molding processing, especially, recently, especially for the purpose of recycling resources, the precision molding processing has been mainly performed at once. In the molding industry, there is still a variety of problems associated with the method of mixing crushed pieces from a runner crusher with virgin raw materials for synthetic resin molding. From the viewpoint that it has been done, crushed pieces such as runners are separately subjected to pelletizing regeneration processing based on an extrusion molding machine etc., and then mixed with the previous virgin raw material for synthetic resin molding and reused The current situation is that we have been trying today, trying the method described above. Therefore, the so-called regenerating apparatus for pelletizing, which has been described above, has been used for some time in the seed industry and / or related markets. Is often found in places where you can see them. However, it can be concluded that all of the pellet regenerating apparatuses described above have been designed and manufactured under the basic technical background as described below.

That is,. First of all, it is a fact that all of such pellet regenerating apparatuses are extremely large in order to cope with large-capacity runner processing. It is evident that this was manufactured with a design intent to accommodate a large number of runners and / or several or more types of runner treatments, and therefore, its installation If the area (floor area for installation) becomes extremely large, it can be said that it is inevitable anymore. . As a matter of course, the construction mechanism is also complicated and diverse, and for example, kneaded strands continuously delivered from a hot screw press are turned into large drums. However, in the winding process,
It has been used as a conventional means to rapidly cool and solidify the kneaded strands by powerful air blow such as compressed air. According to such a configuration means, the floor area of the installation in the factory is, of course, not necessarily extremely large. . Further, instead of the air blow described in the item, a large-sized water tub is provided in the vicinity of the hot screw press, and the kneaded strands continuously delivered from the hot screw press are immediately discharged. It is immersed in water and cooled rapidly. Even in the case of employing such a method, it is necessary to install a drying device attached to the method, and it is necessary to increase an installation floor area more and more. . In accordance with the above-mentioned terms, the configuration is inevitably enlarged and the so-called thick and large, while the price is drastically reduced to several million yen per unit. It was expensive and, of course, as one of the problematic equipments that was not bulky. . On the other hand, on the production side in processing, the kneaded strands flowing continuously are cooled and solidified as quickly as possible, so that not only the various elements described above but also several complicated detour courses are required. Therefore, the productivity is extremely low, and, of course, the processing specifications for each type of raw resin must be changed and changed one by one each time. It was there because it was a heavy burden. . Furthermore, in the synthetic resin molding work, for example, it is placed under the condition that it is necessary to carry out, for example, color change and recycle each runner pellet for each of a wide variety of synthetic resin raw materials. Despite being present, it can be affirmed that the rationalization is one of the distant factors that could not be materialized. As described above, as described in detail, in the "synthetic resin raw material pellet regenerating apparatus" based on a conventionally known technique, various conditions of a molding factory and the like that are presently present are no longer at all possible. The fundamental and serious problem of not being able to match has been laid down, and it can be said that the present has been reached.

[0003]

[Problems to be solved by the invention] In the preceding paragraph,
As will be described in detail, in the "reproducing apparatus for synthetic resin raw material pellets" based on a conventionally known technique, there are a number of serious problems caused by fundamental design problems in the first place, namely, As one of the peripheral devices for a synthetic resin injection molding machine, the most important factor is an excessive problem of occupied space, and furthermore, a problem of high price caused by an increase in weight and length, ...
In addition to the above, the problem of low-efficiency productivity on the site side, which is inevitably caused by various problems, such as this, etc., eventually leads to the serious quality problem of molded products,
… And so on, we have a heavy and large theme that must be resolved as soon as possible, and we have been there today. Now, in this study, the source of such a serious problem has been examined as to the root cause, such as how many places existed as a whole, and the following conclusions were obtained. Was reached because it reached. In other words, in the previous section, it was the place where the details were touched. However, in general, this type of “synthetic resin raw material pellet regenerating device”, which is commonly found at present, generally has a very simple idea and a rutted design idea. There is no other way but to say that it was produced depending on ... etc. That is, as described above, in the conventionally known “recycler for synthetic resin raw material pellets”, the strand itself continuously delivered from a hot screw press is cooled and solidified as quickly as possible. For
Performing cooling air blow, or submerging and ending in the water bath, complicated detour courses etc. are installed as large accessories,
There was no way to solve this problem unless all means and methods were installed around the hot screw press. In other words, based on insensitive ideas and shallow stereotypes and knowledge, etc. It must be said that it was caused. That is, as described above, in recent years, although there is a tendency to try to regenerate pellets by using an extruder for crushed pieces such as runners, as described above, From the situation that there is a fundamental problem in the pellet molding device itself for regenerating the target pellet, it has been decided to focus on the following points as the problem. . We will fundamentally break away from the profound and large rut pattern. . In essence, we focus on the principle that it is only necessary to keep the cooling time mechanically. . Based on the terms (1) to (4), the idea of replacing the cooling time with the cooling length will be adopted. . Therefore, cooling time =
Collect detailed data on cooling length. . According to the above items, the simplest mechanism can be adopted. . According to the preceding section, we aim to provide inexpensive products that are incomparable with conventional products. . Regarding the cooling and solidification of the kneaded strands, a mechanism that can be freely adjusted in a so-called two-dimensional manner in the X direction (horizontal direction) and the Y direction (vertical direction) in order to realize a completely new cooling length. With the new adoption of, this kind of peripheral device will be offered to the market as an unprecedented rational and super-economic device…
It is called. As described above, by taking measures for solving the problems consisting of the items, all the difficult problems as described above have been all cleared at once. Therefore, as a basic design philosophy, the parts, as well as the materials, for each of the constituent elements, as well as their materials, are designed to be as compact, simple and handy as possible. Combined with his strong push, he made great strides toward solving difficult problems.

[0004]

The present invention, as described in detail in the preceding paragraph, has been realized in a most rational manner, but has not been fundamentally solved, and has been realized. As will be described in detail, if the function as a peripheral device related to injection molding is not only enough, it can be more than enough, and the extent of the ripple effect based on the realization will be incalculable. Things exist. That is, various problems are all cleared at once, and furthermore, the configuration is extremely simple, so the price remains low and inexpensive, and the device itself can be made compact and compact, so that it can be installed. Problems such as floor area, etc. are all clear at once, and of course, easy to manufacture, etc., there are some things whose practical effects are immeasurable. Now, here, means for solving such a problem are,
It is as follows. That is, in the preceding paragraph, the details are described in detail, but first, in the "synthetic resin raw material pellet regenerating apparatus" based on the conventionally known technique, the apparatus is too heavy and, particularly, extremely long (for example, In contrast to the length of the bar, which is as high as 1.5 meters), the mechanical element of the apparatus of the present invention is simply a bar having an appropriate diameter and an appropriate length (commonly called a circle). At the tip of the steel bar), a length adjusting bar for installing a guide free roller is inserted and stored in an appropriate place in the space inside the frame base.
The head / roller element (of course, the element can be moved in the Y-axis direction perpendicularly to the length-adjusting bar) so that the element / mechanism can move horizontally in the axial direction. , Which operates integrally with the cutting element, etc.), but which is fixed to one side of a frame base, and is a pellet regenerating device equipped with a cooling length adjusting device for X- and Y-axis two-dimensional directions for strands. . As described above, by adopting a configuration having a control function in the two-dimensional directions of the X-axis and the Y-axis, the length of the conventional product and that of the conventional product can be reduced from 1/2 to 1 depending on the case. It is said that not only staying in the range of, but also requiring a length of １ ／ to ３ of that, it is merely the length dimension occupying space. That's what you get. Therefore, in order to combine the efficient use of space, the floor space required for installation ...
The problems are now completely irrelevant. So, in addition, its "required length"
According to the type of raw material resin to be used, in other words, from the state of the melt, corresponding to the time difference until cooling and solidifying, set to a relatively long time, or conversely, Operation such as setting a shorter setting is simply done by operating the driving element (the fully automatic motor, semi-automatic motor or manual handle type, etc., if necessary), which is freely selectable. There are things that can be set. As described above, in the apparatus of the present invention, for each type of raw material resin used, for example, nylon, polypropylene, polyethylene,... The bar is pulled out to the full length in the X-axis direction, and the head / roller element in the Y-axis direction orthogonal to the X-axis is
What is necessary is just to bring it in the state where it was lowered to the full downward in the axial direction. On the contrary, in the case of special raw material resin or the like containing glass fiber, for example, the length adjusting bar is appropriately pushed in the X-axis direction and set to a short length, and
The operation can be performed by appropriately setting the head / roller element in the Y-axis direction above and above the Y-axis. If it is a conventionally known product, the strand sent out from the hot screw press may be cooled and solidified by a large-scale air blow, or may be submerged in a water bath. However, once it had to be provided with a step of winding on a drum, these were simply referred to as "control of the two-dimensional cooling length" in the apparatus of the present invention. However, the adoption of a completely new cooling system eliminates the need for any large-scale equipment as described above, and of course, the quality of the pellet itself (ie, the physical and mechanical properties of the pellet itself). In other words, all of the individual parts that make up the system can be installed in the frame mount or on one side of the frame mount. From it or the like may be made through storage, Ainari also the effective use of space, difficult problems such as occupying a floor area for the installation becomes a thing that does not exist at all.
Therefore, the device of the present invention is light, thin, short and compact, and its construction mechanism is simple, so it is easy to manufacture it and it is inexpensive and cheap. It will be easier to install in the “raw material pellet recycling device”
Not only general molding plants but also relatively small-scale molding plants in the vicinity can be immediately introduced and operated, which is excellent in practical effects.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The "pellet regenerating apparatus equipped with a cooling / length adjusting device for X-axis and Y-axis two-dimensional directions for strands" according to the present invention is constructed based on the means described above. For example, in the case where the present invention “a pellet regenerating device equipped with a strand X-axis Y-axis two-dimensional direction cooling / length adjusting device” is installed in a general synthetic resin molding plant or the like, there is a case in which As is clear from the embodiment shown in FIGS. 1 and 2, when the molding process is carried out in a molding factory or the like, a runner or a sprue generated by the operation of the injection molding machine is crushed by a crusher ( Generally, a general-purpose runner crusher is available), and the obtained crushed pieces, such as runners, are put into the hopper (23) shown in FIG.
From the hopper (23), it is supplied to a hot screw press (11) provided directly below the hopper (23). The runner crushed pieces supplied to the hot screw press (11) are immediately melted by an electric heater (not shown) disposed on the inner peripheral wall of the hot screw press (11). Depending on the rotational propulsion of the screw of the hot screw press (11),
Kneaded strands (ST) finally kneaded one after another
This means that the images are continuously and sequentially sent out. In this way, the kneaded strands (S
T) passes through a nozzle (13) mounted on the tip of the hot screw press (11) (of course, using an equivalent diameter corresponding to a pellet of a desired size). Depending on the fact, a kneaded strand (ST) having a desired diameter is formed in advance,
The kneaded strand (ST) is further introduced into a feed guide groove roller (14). Here, the feed guide groove roller (14)
The kneaded strand (ST) is introduced via a free roller for guiding (16), is located directly below the head, and is a head / roller element (19) screwed in the Y-axis direction (II). To be introduced. In this state, the kneaded strand (ST) is inserted between the rotation roller (24) and the tension roller (25) inside the head roller element (19) while being inserted in the Y-axis direction ( II), after passing through the suction guide (26), it is cut one after another by a cutting element (20) which is a final step, and is subjected to injection molding by a recycled material such as a runner or a sprue. As a synthetic resin raw material pellet for use, it is newly born and emerges, and is reused together with other virgin raw materials. Depending on the type of resin material used, in order to cope with a minute difference in time for cooling and solidification, for example, as shown in the figure, a small driving element (21) is used instead of a manual handle type. The optimal cooling length (X-axis direction (I) and Y-axis direction (I
In each of I)), quickly and accurately,
The position of the head / roller element (19) can be easily set. Of course, depending on the type of the raw material resin, whether to use the manual type or the electric type is determined by the recycled pellet. The factors involved, such as the type of raw material resin, the processing amount, the particle size of the pellets, etc., are carefully determined and determined after selection.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings, FIGS. As is clear from the drawings of the embodiment of the present invention and the embodiments shown in FIGS. 1 and 2, when performing a molding process in a molding factory or the like, runners and sprues generated by the operation of the injection molding machine are removed. The crushed pieces obtained from the runner crusher are first crushed, and the hopper (2) shown in FIG.
When an appropriate amount is charged from the opening of 3), the hopper (23) supplies the hot screw press (11) provided immediately below the hopper (23).
The runner crushed pieces that have been supplied to the hot screw press (11) are immediately melted by an electric heater (not shown) disposed on the inner peripheral wall of the hot screw press (11).・ Screw press (1
The kneading strands (ST) are formed while being kneaded one after another by the rotational propulsive force of the screw of 1), and are continuously and sequentially sent out. Thus, the kneaded strands (ST) continuously and sequentially sent out pass through the nozzle (13) attached to the tip of the hot screw press (11), and thus the kneaded strands (ST) have a desired shape in advance. Forming a kneaded strand (ST) with the diameter to be
Further, it is introduced into the feed guide groove roller (14). Here, the kneaded strand (S) introduced into the feed guide groove roller (14) is used.
T) is led through the guide free roller (16) and further into the head roller element (19) located immediately below and screwed in the Y-axis direction (II). . In such a state, the kneaded strand (ST) is inserted between the rotation roller (24) and the tension roller (25), which are elements of the internal configuration of the head roller element (19). After hanging down in the Y-axis direction (II) and passing through the suction guide (26), the cutting element (20), which is the final step, successively cuts to the desired size, where the recycled materials such as runners and sprues are used. , A new and regenerated pellet of synthetic resin raw material for injection molding, which is reused together with other virgin raw materials. It should be noted that, in order to correspond to a minute difference in time for cooling and solidifying depending on the type of the resin material used, for example, as shown in the figure, a driving element (21) is used instead of a manual handle type as shown in the figure. By installing a small motor, the optimum cooling length (X-axis direction (I) and Y-axis direction (I
I), the position of the head / roller element (19) can be set quickly and accurately and easily, and, of course, depending on the type of raw material resin. Accordingly, whether to use the manual type or the electric type can be determined and selected after sufficiently examining the factors related to the regenerated pellets, such as the type of raw material resin, the processing amount, the pellet particle size, etc. There is a good problem. As described above, according to the apparatus of the present invention, as described above, according to the raw material resin used, the optimum cooling length corresponding to the cooling and solidification time of the kneaded strand (ST) is determined in the X-axis direction (I) (horizontal). The respective elements that can be set very easily and speedily in a so-called two-dimensional adjustment operation, which is configured to be movable (movable) and Y-axis direction (II) (movable vertically). Parts such as a groove roller for feed guide (14), a free roller for guide (16), a head / roller element (19), a cutting element (20), etc. are provided from one side (18) of the frame base (15). , Just slightly projecting in the horizontal direction,
Not only can the optimal cooling length be kept, but also they become completely independent of the installation floor area.
The fact that it merely occupies free space is a major feature. Needless to say, the number of components is very small, and the practical effect on productivity improvement is incomparable and enormous because of simple configuration, easy assembly, easy operation, and so on.

[0007]

As described above, according to the present invention, the following practical effects are provided. That is, first of all, if the greatest effect of the apparatus of the present invention is to be raised, it will be considered as a conventional type of known synthetic resin material pellet regenerating apparatus. I couldn't do it,
It can be said that this is a breakthrough idea, that is, "cooling time = cooling length". Therefore, if the effects can be further improved, it is as follows. , Floor space for exaggerated installation is completely irrelevant and unnecessary. . Optimal cooling length for synthetic resin materials can be set instantaneously. . The element section has a simple structure, so that it can be easily installed and installed on existing equipment. . The element only occupies free space and has no effect on the workplace. . Since the setting of the cooling length is in a two-dimensional direction consisting of the X direction and the Y direction, it is the most reasonable mechanism. . If a small motor is installed as a driving element,
Work is fast and accurate. . Due to the minimal number of components and simple structure, it can be provided at a very low cost. . Due to space saving, 4S, that is, organizing and organizing the workplace
Cleaning and cleanliness can be achieved. . According to the above items (1) to (4), it is possible to fulfill the responsibilities of promoting rationalization based on the practice of resource recycling and preserving the factory environment. Since the present invention has a tremendous practical effect as described above, it can make a great contribution to this kind of molding industry, but there is no doubt that it can no longer be doubted.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention "a pellet regenerating apparatus equipped with a cooling length adjusting device for X-axis and Y-axis two-dimensional directions for strands", and shows a partially cut-away side view partially omitted. . In the figure, horizontal arrows, →, ←
Indicates an adjustment direction in the X-axis direction, and vertical arrows, ↑ and ↓ indicate adjustment directions in the Y-axis direction.

FIG. 2 is a view showing an embodiment and a right side view of FIG. 1; still,
(27) shows a guide shaft.

[Explanation of symbols]

Reference Signs List 10 X-axis and Y-axis two-dimensional cooling / length adjustment for strands Pellet regenerator with adjusting device 11 Hot screw press 12 Drive motor 13 Nozzle 14 Feed guide groove roller 15 Frame base 16 Guide free roller 17 For length adjustment Bar 18 One side 19 Head / roller element 20 Cutting element 21 Driving element 22 Driving screw rod 23 Hopper 24 Rotation roller 25 Tension roller 26 Suction guide 27 Guide shaft ST Kneading strand → in the X-axis direction Adjustment direction ↑ ↓ Adjustment direction in Y-axis direction

Claims (1)

[Claims] 1. A hot screw press (11), a driving motor (12), a nozzle (13) mounted on the hot screw press (11), and a feed guide groove for a kneaded strand (ST). Roller (1
The elements such as 4) are arranged on the frame base (15) to form a structure. Therefore, a synthetic material for injection molding, such as a runner or a sprue generated at the time of injection molding, is used for recycling crushed chips. In the resin raw material pellet regenerating apparatus, it is located directly below the hot screw press (11) and the feed guide groove roller (14) to be installed, and in the space of the frame base (15). In the X-axis direction (I), it is horizontally movable, and at the free end of the exposed portion from the frame base (15),
An appropriate length length adjusting bar (17), which can support a guide free roller (16) having an appropriate diameter and which can be inserted and stored in the frame base (15) at the other end, is provided with an X. While mounting in the axial direction (I),
The feed guide groove roller (14) is located substantially directly below, and on one side (18) of the frame mount (15), which is orthogonal to the X-axis direction (I) described above, The driving element (2) is provided at the lower end so that the head / roller element (19) and the cutting element (20) can move vertically in the Y-axis direction (II) integrally.
A pellet regenerating apparatus (10) equipped with an X-axis and Y-axis two-dimensional cooling / length adjusting device for strands, wherein the driving screw rod (22) to be directly connected is installed in (1).