JP2007175959A - Method and apparatus for producing long fiber-reinforced thermoplastic resin material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the leakage of a molten resin from the introduction holes of an impregnation die and to control the amount of the molten resin to be spilt. <P>SOLUTION: In the introduction die, a plurality of the introduction holes 7 for continuously supplying reinforcing fiber bundles 4 connected to an impregnation chamber 1 are formed in an entrance plate 2. A shutter 5 is attached to each introduction hole 7 of the entrance plate 2 to be able to open/close the introduction holes individually. A shutter receiver 6 is set on the lower side of the introduction hole of the entrance plate 2. While the shutter 5 is engaged with the shutter receiver 6, the introduction hole 7 is opened/closed by moving the shutter 5 vertically. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for producing a long fiber reinforced thermoplastic resin material obtained by impregnating a fiber bundle of reinforcing fibers with a thermoplastic resin and a method for producing the same.

  Conventionally, long fiber reinforced thermoplastic resin materials used for injection molding applications, extrusion molding applications, press molding applications, and the like are manufactured by impregnating a thermoplastic resin into a fiber bundle of reinforcing fibers using an impregnation die. Various types of impregnation dies are known as the impregnation die. The basic structure of typical impregnation dies is disclosed in, for example, Patent Document 1 and Patent Document 2. As shown in FIG. 7, this impregnation die is an impregnation die in which a molten thermoplastic resin (hereinafter also referred to as a molten resin) is accommodated in a fiber bundle 4 from an introduction hole 7 provided in an inlet plate 2 on the upstream side. After being introduced into the impregnation chamber 1 and passing through the molten resin supplied from the molten resin supply pipe 9 to the impregnation chamber 1, the fiber bundle 4 is impregnated with the molten resin, and then the outlet plate 3 on the downstream side of the impregnation die. It is extracted from the provided extraction hole 8.

In the above impregnation die, in order to improve productivity, a plurality (for example, about 2 to 100) of the inlet plate 2 and the outlet plate 3 are usually arranged in parallel at regular intervals in order to improve productivity. The plurality of fiber bundles 4 are simultaneously impregnated with the molten resin by inserting the fiber bundles 4 into the respective introduction holes and introducing the fiber bundles 4 into the impregnation chamber 1 and passing through the molten resin. ing. In this case, in order to ensure that the fiber bundle 4 is sufficiently impregnated with the molten resin and to prevent air from entraining the fiber bundle 4 and entering from the introduction hole 7, a molten resin suitable for the amount of use is used. Is supplied to the impregnation chamber 1 so that a constant internal pressure is exerted on the molten resin in the chamber, and the molten resin is slightly overflowed (overflowed) from the gap between the introduction hole 7 and the fiber bundle 4.
JP 2003-305777 A JP 11-42639 A

  However, when a long fiber reinforced thermoplastic resin material is produced using an impregnation die as described above, the monofilament of the fiber bundle introduced into or introduced into the impregnation die is cut during operation (so-called single yarn breakage), The cut monofilament is clogged in the introduction hole, or the cut monofilament is moved to the drawing hole in the impregnation die and blocked, and the tensile resistance of the fiber bundle is increased. was there.

  That is, the molten resin can be easily impregnated into the fiber bundle and the resin-impregnated fiber bundle can be easily pulled out, or the molten resin can be slightly removed from the gap between the introduction hole and the fiber bundle so that air does not enter the fiber bundle through the introduction hole. In order to overflow each time, the supply amount of the molten resin is adjusted while adjusting the internal pressure of the impregnation die to be slightly higher. As a result, when the fiber bundle breaks, the molten resin leaks from the broken introduction hole. Therefore, it is necessary to interrupt and repair the work each time, resulting in a reduction in work efficiency.

  Also, when the balance of the amount of molten resin used and the supply amount is broken due to the breakage of the fiber bundle, etc., the distribution of the internal pressure of the molten resin in the impregnation die changes. Even if the amount of overflow of the molten resin from a specific introduction hole increases, there is no way to suppress this, so there is a problem that the molten resin is likely to be wasted and uneven impregnation.

  The object of the present invention is to prevent the molten resin from leaking from the introduction hole, even when the fiber bundle breaks, and to keep the internal pressure in the impregnation die constant at all times. An object of the present invention is to provide a production apparatus and a production method capable of producing a good long fiber reinforced thermoplastic resin material with high productivity.

The present invention has been made to achieve the above object, and provides the following production apparatus and production method for the long fiber reinforced resin material. That is,
The present invention is provided in an impregnation chamber for containing a molten thermoplastic resin therein, a resin supply path for supplying the molten thermoplastic resin into the impregnation chamber, and an inlet plate upstream of the impregnation chamber. A plurality of introduction holes for continuously supplying a fiber bundle of reinforcing fibers to the impregnation chamber, and a fiber bundle impregnated with a molten thermoplastic resin provided on the outlet plate on the downstream side of the impregnation chamber. In an apparatus for producing a long fiber reinforced thermoplastic resin material having an impregnation die having a plurality of drawing holes for drawing, a shutter is individually provided outside the inlet plate for each inlet hole of the inlet plate. Provided is an apparatus for producing a long fiber reinforced thermoplastic resin material, characterized in that it can be opened and closed.

  Furthermore, the present invention introduces a continuous fiber bundle of reinforcing fibers from a plurality of introduction holes provided in an inlet plate of an impregnation die into an impregnation chamber filled with a molten thermoplastic resin. A continuous fiber is impregnated with the molten thermoplastic resin, and the fiber bundle impregnated with the molten thermoplastic resin is extracted from the extraction hole of the outlet plate of the impregnation die. In addition, a shutter is provided in each inlet hole of the inlet plate so as to be individually openable and closable, and the molten thermoplastic resin that leaks or overflows from the inlet hole is controlled by the shutter, to produce a long fiber reinforced thermoplastic resin material Provide a method.

  According to the present invention, the inlet plate of the impregnation die provided with the introduction hole for the fiber bundle of reinforcing fibers is provided with a shutter that can individually open and close the introduction hole, so that the fiber bundle breaks during the operation. Even if it occurs, the introduction hole can be quickly closed with a shutter to prevent leakage of the molten resin from the introduction hole. As a result, the work is conventionally interrupted each time. However, the present invention can continue the work by closing the introduction hole where the breakage has occurred, so that the work efficiency can be improved.

  Further, since the amount of molten resin overflowing from each introduction hole can be appropriately and uniformly managed, a high-quality long fiber reinforced resin material can be obtained by uniformly impregnating the fiber bundle with the molten resin.

  Furthermore, even if the internal pressure distribution of the molten resin in the impregnation die changes, the amount of molten resin overflowing from the gap between the introduction hole and the fiber bundle can be individually managed with a shutter, so that the impregnation property of the molten resin into the fiber bundle is improved. High quality long fiber reinforced resin material can be manufactured with high productivity.

  Further, according to the present invention, since the shutter receiver is attached to the shutter, the shutter can be easily opened and closed, so that workability is improved.

  As the reinforcing fiber used in the present invention, glass fiber, carbon fiber, aramid fiber, ceramic fiber and the like can be used alone or in combination. Among these, glass fibers are preferred because they are widely used in terms of their characteristics and cost. These reinforcing fibers are used as a fiber bundle formed by converging monofilaments, and the monofilaments preferably have an average diameter of 4 to 30 μm, more preferably 7 to 25 μm. If the average diameter of the monofilament is less than 4 μm, the resulting long fiber reinforced resin material is expensive, and if it exceeds 30 μm, the mechanical properties of the obtained long fiber reinforced resin material are inferior.

  The fiber bundle used in the present invention is a bundle of about 100 to 20,000 monofilaments. If the number of monofilaments to be bundled is less than 100, the productivity is inferior. If the number of monofilaments is more than 20,000, the fiber bundle becomes thick and it is difficult to uniformly impregnate the molten resin between the monofilaments.

  In the present invention, the thermoplastic resin impregnated in the fiber bundle is not particularly limited, and commercially available resins can be used. However, from the viewpoint of impregnation, cost, and physical properties, polyolefin resins, polyamide resins, and polyester resins are used. Resins, polycarbonate resins, polyphenylene sulfide resins, and polystyrene resins are suitable, and polyolefin resins, polyamide resins, and polyester resins are particularly suitable.

  As the polyolefin resin, for example, polypropylene and polyethylene are preferable. As the polyamide resin, for example, nylon 6.6, nylon 6, nylon 12, MXD nylon and the like are preferable. As the polyester resin, for example, polyethylene terephthalate, polybutylene terephthalate and the like are preferable. These resins may be used in admixture with additives such as colorants, modifiers, antioxidants and UV-resistant agents, and fillers such as calcium carbonate, talc and mica.

  The long fiber reinforced resin material obtained in the present invention is, for example, a pellet or needle-like or wire-like material having a thickness of 0.2 to 4.0 mm and a length of 3 to 50 mm, continuous or non-continuous tape, or A sheet-like material is mentioned. Moreover, although the content rate of a reinforced fiber changes with the uses of the obtained long fiber reinforced resin material etc. and is not specified, it is 15-80 vol% normally. If the content rate of a reinforced fiber is the said range, the high reinforcement effect of a long fiber reinforced resin material will be acquired, and a high intensity | strength molded object can be obtained from this long fiber reinforced resin material.

  Next, preferred embodiments of the present invention will be described in more detail with reference to the drawings. The drawings exemplify the impregnation die (hereinafter referred to as the present impregnation die) of the preferred long fiber reinforced resin material production apparatus of the present invention, but the present invention is not limited to this. In addition, the same code | symbol is attached | subjected and demonstrated to the same component as the impregnation die | dye of FIG.

  FIG. 1 is an explanatory sectional view schematically showing the impregnation die. The impregnation die is provided on the upstream side of the impregnation chamber 1 that accommodates the molten resin supplied from the molten resin supply pipe 9 as shown in FIG. 1 and is used to introduce a continuous fiber bundle 4 of reinforcing fibers into the impregnation chamber 1. The inlet plate 2 provided with the introduction hole 7 and the outlet plate provided downstream of the impregnation chamber 1 and provided with an outlet 8 for drawing out the fiber bundle impregnated with the molten resin from the impregnation chamber 1 3 and the fiber bundle 4 introduced into the impregnation chamber 1 through the introduction hole 7 is passed through the molten resin in the impregnation chamber 1 so that the fiber bundle 4 is impregnated with the molten resin. It is configured so as to be continuously extracted from the impregnation die after being sent to the drawing hole 8 of the plate 3 and squeezing away the excess molten resin. The above operation is continuously performed in all the introduction holes provided in the inlet plate 2 of the impregnation die. The inlet plate 2 and the outlet plate 3 refer to portions that form upstream and downstream side walls of the impregnation chamber 1 as part of the outer wall of the impregnation chamber 1, respectively.

  The above-described structure of the impregnation die is the same as that of a conventionally known impregnation die, and the present invention can be applied to any impregnation die having the inlet hole 7 in the inlet plate 2. The impregnation die is formed from materials such as iron, stainless steel, and the like plated with various metals such as iron, nickel, and chromium. Therefore, the inlet plate 2 and the outlet plate 3 can also be formed of these materials. A hollow substantially box-shaped impregnation chamber 1 is formed inside the impregnation die, and molten resin is supplied to the impregnation chamber 1 from a molten resin supply pipe 9. The size of the impregnation chamber 1 is not specified, but is 10 to 200 cm in length, 10 to 200 cm in width, and about 1 to 50 cm in depth. Therefore, the inlet plate 2 and the outlet plate 3 are about 20 to 100 cm in width and about 1 to 50 cm in height. It becomes. Although not shown, the impregnation die can be provided with a fiber bundle 4 defibrating device (for example, a defibrating bar) in the impregnation chamber 1, and a heating or heat retaining device can be attached if necessary.

  As shown in FIG. 2, the inlet plate 2 of the impregnation die is provided with a plurality of introduction holes 7 arranged in parallel at predetermined equal intervals in the lateral direction at a substantially central portion in the height direction. In this case, the number of introduction holes 7 is not specified, but is usually preferably about 10 to 100 in terms of productivity and practicality, and the interval is preferably about 5 to 50 mm. Examples of the shape of the introduction hole 7 include an elliptical shape, a rectangular shape, and a circular shape. Among these, the elliptical introduction hole illustrated in FIG. 2 can be introduced into the impregnation chamber 1 with the fiber bundle 4 expanded in the lateral direction, so that the impregnation property of the molten resin can be improved. The elliptical introduction hole 7 (including a circular shape) has a horizontal diameter of about 1 to 45 mm and a vertical diameter of about 1 to 10 mm. The outlet plate 3 of the impregnation chamber 1 is provided with the same number of extraction holes 8 as the introduction holes 7 corresponding to the introduction holes 7. The shape of the extraction hole 8 is generally circular, and the hole diameter is about 0.2 to 4 mm, but may be another shape such as an ellipse.

  The corners on the outside (left side in FIG. 1) of the introduction hole 7 are chamfered 2R to 4R so that the fiber bundle 4 can be smoothly introduced by reducing the resistance of the fiber bundle 4 at the time of introduction. This chamfering is similarly performed on the corner portion of the drawing hole 8 on the impregnation chamber side in order to smoothly take out the fiber bundle impregnated with the molten resin and prevent clogging of the yarn breakage or the cut fiber. . These chamfers are preferably performed on the entire circumference of the hole.

  Further, the inlet plate 2 of the impregnation die is provided with bolt holes 10 corresponding to the introduction holes 7 above the introduction holes 7 as shown in FIG. The bolt hole 10 is for attaching a shutter, which will be described later, with a bolt, and is preferably provided on a vertical line x passing through the center in the width direction of the introduction hole 7 so that the shutter is attached directly above the introduction hole 7. A bolt hole 11 for attaching a shutter receiver (described later) is provided below the introduction hole 7.

  FIG. 3 is a longitudinal sectional view (a cross-sectional portion taken along the line AA in FIG. 6) of the inlet hole 7 portion of the inlet plate 2 in FIG. As shown in FIG. 3, the present invention is characterized in that the introduction holes 7 of the inlet plate 2 are provided with shutters 5 that can individually open and close each introduction hole 7. The shutter 5 is attached to the bolt holes 10 provided above the respective introduction holes 7 by bolts 12, and the introduction holes 7 can be opened and closed by moving the bolts 12 up and down. Furthermore, in a preferred embodiment of the present invention, a shutter receiver 6 is provided to make the opening / closing operation of the shutter 5 smooth and reliable. In this example, as shown in FIG. 3, it is fixed below the introduction hole 7 with a bolt 13. Hereinafter, the shutter 5 and the shutter receiver 6 will be described with reference to the drawings.

  As shown in FIG. 4, the shutter 5 is a plate-like body made up of a base portion 15 and leg portions 16 extending below the base portion 15 and has a T-shape as a whole. As the material of the shutter 5, for example, the same material as the inlet plate 2 such as stainless steel, iron plated with various metals such as nickel and chromium can be preferably used. Although thickness is not specified, about 1-10 mm is preferable. If the thickness is less than 1 mm, deformation is likely to occur, and there is a possibility that a sufficient function as a shutter cannot be obtained. On the other hand, a shutter having a wall thickness exceeding 10 mm is not only heavy but the operability of opening and closing the shutter is deteriorated, and the cost is also inferior.

  A loose fitting long hole 14 is formed in the center of the base portion 15 in the vertical direction, and a bolt 12 is inserted into the loose fitting long hole 14 and screwed into the screw hole 10 of the inlet plate 2. 5 can be attached to the upper side of the introduction hole 7 outside the inlet plate 2. Since the shutter 5 is movable in the vertical direction within the range of the loose fitting long hole 14 with the bolt 12 loosened, the introduction hole can be moved by moving it to a predetermined position along the outer surface of the inlet plate 2. 7 can be opened and closed individually. That is, the shutter 5 attached to each introduction hole usually has the entrance plate 2 at a position where the lower end 17 of the leg 16 is raised above the introduction hole 7, that is, at a position where the introduction hole 7 is opened. If the specified introduction hole 7 is to be closed, the shutter bolt 12 is loosened and the legs 16 of the shutter 5 are lowered to the middle or the lowest position of the introduction hole 7. In this way, a part or all of the introduction hole 7 can be closed by the leg portion 16 of the shutter 5. In the present invention, when the introduction hole is opened and closed, it is needless to say that the introduction hole is completely blocked as described above, and only a part of the opening is blocked.

  In the shutter 5, the width of the base portion 15 (the width of the shutter 5) a is determined to be smaller than the width (pitch) of the introduction holes 7. If a is larger than the width of the introduction hole 7, the adjacent shutters are restricted from each other and the shutter 5 cannot be provided for each introduction hole of the inlet plate 2. It is necessary to make it smaller.

  The size and shape of the leg portion 16 are not specified, but are determined so that the introduction hole 7 is completely closed by the leg portion 16 when the shutter 5 is lowered. In this example, the rectangular leg portion 16 is adapted to the elliptical introduction hole 7 as shown in FIG. 4, but the present invention is not limited to this. In the shutter 5, the width b of the leg portion 16 is preferably slightly larger than the lateral width of the introduction hole 7. This is because if b is larger than the lateral width of the introduction hole 7, the width direction of the introduction hole 7 can be blocked even if the leg portion 16 is slightly displaced in the lateral direction. Further, the height (length) c of the leg portion 16 is larger than the vertical width of the introduction hole 7 so that the entire introduction hole 7 can be closed by the leg portion 16 when the shutter 5 is sufficiently lowered. Preferably it is selected. The outer corner of the lower end 17 of the leg 16 is chamfered so that the fiber bundle can be smoothly introduced into the introduction hole 7.

  As mentioned above, although an example of the preferable shutter of this impregnation die | dye was demonstrated, the shape of the shutter 5 and the up-and-down moving method can be changed in the range which can achieve the objective of the opening / closing adjustment of the introduction hole 7, and is not limited. For example, although not shown, the shape of the shutter 5 is T-shaped, and a rectangular shape or the like can be appropriately employed as long as it can prevent leakage of molten resin. Further, if the upper end of the base portion 15 is bent outward or a gripping protrusion is provided on the upper end of the base portion 15, the shutter 5 can be easily raised and lowered. In this example, when the shutter 5 is moved up and down, a part of the shutter 5 is grasped with the bolt 12 loosened. For example, if the shutter 5 is held on the entrance plate 2 with a screw rod, The shutter 5 can be moved up and down by screw operation to be accurately fixed at a predetermined position.

  Next, the shutter receiver 6 will be described. Although the shutter 5 can be used without the shutter receiver 6 in the present invention, it is preferable to provide the shutter receiver 6 as shown in FIGS. 1 and 2 in order to make the shutter 5 easy to open and close. As shown in FIG. 5, the shutter receiver 6 is a long rectangular plate having a concave portion 19 at the upper end, and its horizontal width is substantially the same as the horizontal width of the inlet plate 2. The shutter receiver 6 is provided with a plurality of holes 18 along the longitudinal direction thereof, and bolts 13 are passed through the holes 18 so as to be fastened to the bolt holes 11 (see FIG. 2) of the inlet plate 2. Can be attached to the lower side of the introduction hole 7 of the inlet plate 2. As a result, the shutter 5 and the shutter receiver 6 are attached to the outside of the inlet plate 2 with the introduction hole 7 interposed therebetween as shown in FIG.

  In the shutter receiver 6, the concave portion 19 is formed so that the leg portion 16 of each shutter 5 mounted on the entrance plate 2 can be fitted into the concave portion 19. For this reason, it is preferable that the recessed portions 19 are formed at the same interval as the interval between the leg portions 16 of the shutter 5, and the shape and dimension thereof are substantially the same as the shape of the leg portion 16. Specifically, the width of the concave portion 19 is the same as or slightly larger than the width b of the leg portion 16. As a result, when the concave portion 19 of the shutter receiver 6 is attached to the leg portion 16 of the shutter 5 attached to the upper side of the introduction hole 7, the leg portion 16 is attached to the shutter receiver as shown by a chain line in FIG. 6, the guide hole 7 is moved up and down while being guided by the recess 19, so that the introduction hole 7 can be reliably opened and closed by the leg portion 16 without causing a lateral displacement. It is preferable that at least the outer corners of the lower side 20 of the recess 19 are chamfered so that the fiber bundle 4 can be easily introduced. In this example, the shutter receiver 6 is formed of a single plate, but the shutter receiver 6 may be divided into a plurality of parts.

  The relationship between the shutter 5 and the shutter receiver 6 thus attached to the entrance plate 2 will be described in more detail with reference to FIG. FIG. 6 is a partial side view of FIG. 3 when viewed from the left direction. In the figure, only one shutter is shown, but the other shutters are the same. The figure shows a state in which the shutter 5 is open. When the shutter 5 and the shutter receiver 6 are fixed to the entrance plate 2 as shown in FIG. 6, the introduction hole 7 of the entrance plate 2 enters the recess 19 of the shutter receiver 6, and the lower side portion 20 of the recess 19 is The upper end of the shutter receiver 6 is positioned slightly above the uppermost portion of the introduction hole 7. On the other hand, in the shutter 5, the front end of the leg portion 16 is fitted into the concave portion 19 of the shutter receiver 6, and the lower end 17 is bolted to the inlet plate 2 at a level substantially equal to or higher than the uppermost portion of the introduction hole 7. 12 is fixed. Thus, a hole space 21 (see FIG. 3) surrounded by the recess 19 of the shutter receiver 6 and the leg portion 16 of the shutter 5 is formed between the shutter 5 and the shutter receiver 6 attached to the entrance plate 2. Is done. The hole space 21 communicates with the introduction hole 7 to form an introduction path for the fiber bundle 4, and the fiber bundle 4 can be introduced from the introduction path to the impregnation die during normal operation.

  Next, a method for opening and closing the introduction hole 7 with the shutter 5 will be described with reference to FIG. In the present invention, the shutter 5 is opened and closed when the fiber bundle breaks or when it is desired to suppress the amount of molten resin overflowing from the gap between the introduction hole 7 and the fiber bundle. In the former, in order to prevent the molten resin from leaking from the introduction hole 7, the bolt 12 of the shutter 5 of the introduction hole 7 where the fiber bundle breaks is loosened, and the lower end 17 of the leg portion 15 is formed in the recess 19 of the shutter receiver 6. The shutter 5 is lowered until it comes into contact with the lower side portion 20, and the shutter 5 is fixed with a bolt 12 at this position, whereby the introduction hole 7 is closed with the leg portion 15 of the shutter 5 to prevent the molten resin from leaking out.

  In the latter case, the shutter 5 of the introduction hole 7 for which the overflow amount of the molten resin is to be suppressed is similarly loosened and lowered to a predetermined position and fixed. Thereby, since the upper part of the introduction hole 7 is blocked by the legs 16 of the shutter 5, the overflow of the molten resin from the gap with the fiber bundle in the upper part of the introduction hole 7 is suppressed, and the amount of the overflow is adjusted. Can do.

  As described above, according to the present invention, the introduction hole in which the fiber bundle is broken and the molten resin leaks, or the introduction hole in which the internal pressure distribution of the molten resin in the impregnation chamber is changed and the amount of resin overflowing from the introduction hole is increased, Open and close individually with the shutter. As a result, even if the fiber bundle breaks in some of the introduction holes, the breakage of the introduction holes can be blocked and resin leakage can be prevented immediately, so that the operation can be continued without interruption as in the conventional case. This makes it possible to improve work efficiency. In addition, since the amount of molten resin overflowing from each introduction hole can be managed appropriately and uniformly, a high-quality long fiber reinforced thermoplastic resin material can be obtained by uniformly impregnating the fiber bundle with the molten resin.

  Furthermore, the introduction hole can be opened and closed with only the shutter, but by attaching a shutter receiver to the shutter as in this example, the opening and closing of the shutter is facilitated and the opening and closing of the shutter can be operated quickly, so high workability Is obtained.

  Since the present invention can individually open and close the introduction holes with a shutter to prevent leakage of molten resin from the introduction holes and optimize the overflow amount, high quality long fiber reinforced thermoplastic resin material is manufactured with high productivity Applicable to do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional explanatory view of an impregnation die for production of a long fiber reinforced thermoplastic resin material which is a preferred embodiment of the present invention. The front view of the entrance plate of FIG. Sectional drawing of the introduction hole part of FIG. The perspective view of a preferable shutter. The front view of a preferable shutter receiver. The partial left view of the impregnation die | dye of FIG. Schematic cross-sectional explanatory drawing of the conventional impregnation die | dye.

Explanation of symbols

1: impregnation chamber, 2: inlet plate, 3: outlet plate,
4: fiber bundle, 5: shutter, 6: shutter receiver,
7: introduction hole, 8: extraction hole, 9: molten resin supply pipe,
10: bolt hole, 11: bolt hole, 12: bolt,
13: bolt, 14: loose fitting long hole, 15: base,
16: Leg part, 17: Lower end, 18: Hole,
19: recessed part, 20: lower side part, 21: hole space,

Claims (5)

  Fibers of continuous reinforcing fibers provided in an impregnation chamber for containing a molten thermoplastic resin therein, a resin supply path for supplying the molten thermoplastic resin into the impregnation chamber, and an inlet plate upstream of the impregnation chamber A plurality of introduction holes for continuously supplying the bundle to the impregnation chamber, and a plurality for extracting the fiber bundle impregnated with the molten thermoplastic resin to the outside provided in the outlet plate on the downstream side of the impregnation chamber In a manufacturing apparatus for a long fiber reinforced thermoplastic resin material having an impregnation die having an extraction hole, a shutter is provided for each introduction hole of the entrance plate so that the introduction hole can be opened and closed individually on the outside of the entrance plate. An apparatus for producing a long fiber reinforced thermoplastic resin material, characterized in that:   2. The production of a long fiber reinforced thermoplastic resin material according to claim 1, wherein the shutter is provided above the introduction hole of the inlet plate, and the introduction hole can be opened and closed by moving the shutter in the vertical direction with respect to the introduction hole. apparatus.   The length according to claim 2, wherein a shutter receiver is provided below the introduction hole of the inlet plate, and the introduction hole is opened and closed by moving the shutter up and down while being engaged with the shutter receiver. Equipment for manufacturing fiber reinforced thermoplastic resin materials.   The shutter includes a base portion having a loose fitting long hole and a leg portion extending below the base portion. The shutter is attached to the inlet plate by a bolt that passes through the loose fitting long hole, and the bolt is loosened in a vertical direction. The shutter receiver is fixed to the inlet plate so that the introduction hole is located in the recess provided at the upper end, and the shutter leg is fitted into the recess to move up and down. The apparatus for producing a long fiber reinforced thermoplastic resin material according to claim 3, wherein the introduction hole is opened and closed by the leg portion.   A fiber bundle of continuous reinforcing fibers is introduced into an impregnation chamber filled with a molten thermoplastic resin through a plurality of introduction holes provided in the inlet plate of the impregnation die, and continuously passed through the molten thermoplastic resin. In the method for producing a long fiber reinforced thermoplastic resin material, the fiber bundle is impregnated with a molten thermoplastic resin, and the fiber bundle impregnated with the molten thermoplastic resin is extracted from the extraction hole of the outlet plate of the impregnation die. A method for producing a long fiber reinforced thermoplastic resin material, wherein a shutter is provided in each introduction hole so that the shutter can be individually opened and closed, and the molten thermoplastic resin leaking or overflowing from the introduction hole is controlled by the shutter.

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