JP2019014115A - Material feeder for plasticizer - Google Patents

Abstract

To provide a material feeder for a plasticizer capable of stably supplying a material into a heating cylinder.SOLUTION: A material feeder 11 of a plasticizer supplying a material M from a supply cylinder 18 to a heating cylinder 13 has an opening 22 formed at a side face of the supply cylinder 18 for supplying material, an upstream side supply cylinder 23 connected to the opening 22, and a pushing member 21 provided in the supply cylinder 18 and reciprocating in an axial direction between a position S1 where the opening 22 is opened and a position S2 where the opening 22 is closed. And a plurality of grooves 43 communicating from a tip side 41 to a rear end 42 are formed on a side face 40 of the pushing member 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a material supply apparatus for a plasticizing apparatus that supplies material from a supply cylinder to a heating cylinder.

As a plasticizer that supplies material from a supply cylinder to a heating cylinder, a plasticizer that relies on falling by its own weight is generally used. However, when a mixing device or a heating device is provided in the middle of the supply tube, or when the material has a property that the material does not easily fall by its own weight, a device using a pushing device is also known. Conventionally, what was described in patent document 1 and patent document 2 is known as a material supply apparatus of the plasticizing apparatus using an indentation apparatus. Patent Document 1 relates to a low-melting-point metal material, but as shown in FIG. 6, a pushing device for pushing the material downward is formed by a pushing member provided at the tip of a rod such as a hydraulic cylinder. Has been.

Further, Patent Document 2 is a material supply apparatus capable of cutting out a material with high accuracy, and supplies a material by reciprocating a piston by a driving means such as an air cylinder. Moreover, the piston of patent document 2 has a notch-shaped groove part, and it is described that the amount of cutting is determined from the product of the capacity of the groove part and the number of reciprocations of the piston.

JP-A-4-156320 (Claim 1, page 5, upper right column to lower left column, FIG. 6) JP 2008-179126 A (Claims 1, 0022, FIG. 2, FIG. 4)

However, when the material to be supplied is less than a certain particle diameter or is a thin fiber or the like, the material enters between the pressing member of the pressing device and the supply cylinder in Patent Document 1 and Patent Document 2, and the pressing is performed. There was a problem that the operation of the member could not be performed well. Alternatively, since the material supplied from the material supply opening provided on the side surface of the supply cylinder is not supplied into the supply cylinder with a uniform distribution, even if the material supplied by the pressing member is pushed in as it is, the material is evenly supplied into the heating cylinder. Could not be sent.

The material supply apparatus for a plasticizing apparatus according to the present invention addresses the above-described problem, and an object thereof is to provide a material supply apparatus for a plasticizing apparatus that can stably supply a material into a heating cylinder. .

The material supply device for a plasticizing apparatus according to claim 1 of the present invention is a material supply device for a plasticizing device that supplies material from a supply tube to a heating tube, and is used for material supply formed on a side surface of the supply tube. An opening, an upstream supply cylinder connected to the opening, and a pushing member that is provided inside the supply cylinder and reciprocates in the axial direction between a position where the opening is opened and a position where the opening is closed And a plurality of grooves communicating from the front end side to the rear end side are formed on the side surface of the pushing member.

According to a second aspect of the present invention, there is provided a material supply device for a plasticizing apparatus for supplying a material formed on a side surface of the supply cylinder in the material supply apparatus for a plasticizing apparatus for supplying material from a supply cylinder to a heating cylinder. An opening, an upstream supply cylinder connected to the opening, and a pushing member that is provided inside the supply cylinder and reciprocates in the axial direction between a position where the opening is opened and a position where the opening is closed And the cross-sectional area in the direction perpendicular to the axial direction of the pushing member is a central cylinder between the front end side body part and the rear end side body part with respect to the cross sectional area of the front end side body part and the rear end side body part. The cross-sectional area of the part is formed small.

According to a third aspect of the present invention, there is provided a material supply device for a plasticizing apparatus for supplying a material formed on a side surface of the supply cylinder in the material supply apparatus for a plasticizing apparatus for supplying material from a supply cylinder to a heating cylinder. An opening, an upstream supply cylinder connected to the opening, and a pushing member that is provided inside the supply cylinder and reciprocates in the axial direction between a position where the opening is opened and a position where the opening is closed And a conical recess is formed on the tip side of the pushing member, and a protrusion is formed on the outer periphery of the recess.

According to a fourth aspect of the present invention, there is provided a material supply device for a plasticizing apparatus for supplying a material formed on a side surface of the supply cylinder in the material supply apparatus for a plasticizing apparatus for supplying a material from a supply cylinder to a heating cylinder. An opening, an upstream supply cylinder connected to the opening, and a pushing member that is provided inside the supply cylinder and reciprocates in the axial direction between a position where the opening is opened and a position where the opening is closed And a protrusion is formed on the tip side of the pushing member on the side where the material is unevenly deposited in the supply cylinder.

According to a fifth aspect of the present invention, there is provided the material supply apparatus for a plasticizing apparatus according to the third or fourth aspect, wherein a projection is formed at least on the opening side on the distal end side of the pushing member. Features.

The material supply device of the plasticizing apparatus of the present invention is the material supply device of the plasticizing device for supplying material from the supply tube to the heating tube, and the material supply opening formed on the side surface of the supply tube, and the opening An upstream supply cylinder connected to a portion, and a push member provided inside the supply cylinder and reciprocating in an axial direction between a position where the opening is opened and a position where the opening is closed, Since the groove part connected from the front end side to the rear end side is formed on the side surface of the member, the material can be stably supplied into the heating cylinder. Alternatively, in the material supply device of the plasticizing apparatus according to the present invention, the cross-sectional area in the direction orthogonal to the axial direction of the pushing member has a cross-sectional area of the front-end side body portion and the rear-end side body portion. Since the cross-sectional area of the central barrel between the end barrels is small, the material can be stably supplied into the heating cylinder. Alternatively, since the protrusion is formed at least on the opening side on the distal end side of the pushing member, the material can be stably supplied into the heating cylinder.

It is sectional drawing of the material supply apparatus of the plasticization apparatus of this embodiment, Comprising: It is a figure at the time of pushing member retraction. It is sectional drawing of the material supply apparatus of the plasticization apparatus of this embodiment, Comprising: It is a figure at the time of pushing member advance. It is a figure of the pushing member of the material supply apparatus of the plasticizing apparatus of this embodiment, Comprising: The left half is a figure which consists of a longitudinal cross-sectional view, and the right half consists of a side view. It is an arrow view of the AA line of FIG. It is a figure of the pushing member of the material supply apparatus of the plasticizing apparatus of another embodiment, Comprising: The left half is a figure which consists of a longitudinal cross-sectional view, and the right half consists of a side view. It is sectional drawing of the material supply apparatus of the plasticization apparatus of another embodiment.

The material supply apparatus 11 of the plasticizing apparatus of this embodiment is demonstrated with reference to FIG. The material supply device 11 of the plasticizing device of this embodiment is a device that is attached to an injection device 12 of an injection molding machine (including an injection compression molding machine) for molding a molded article of a composite resin material containing a carbon fiber material. is there. In addition, the injection device 12 of this embodiment corresponds to a plasticizing device. Although the injection device 12 of the injection molding machine is a general one, the heating cylinder 13 is a cylindrical member having a predetermined thickness, and a plurality of heaters 13a and a plurality of thermocouples (not shown) are provided, and each heater 13a has a zone. Temperature control is possible. A metering and injection screw 14 is disposed in an inner hole 13b provided at the center in the axial direction of the heating cylinder 13 so as to be rotatable and movable forward and backward. The screw 14 is provided with a flight portion 14a at a predetermined interval, and during measurement, a resin material containing carbon fiber (hereinafter simply referred to as fiber) is kneaded and measured by rotating the screw, and is sent and stored in the inner hole 13b in front of the screw. During injection, it has a role of injecting the stored material into a cavity in a mold (not shown) by advancing the screw. In this embodiment, since the resin material containing the already melted fiber is sent from the material supply device 11 described later to the inner hole 13b of the heating cylinder 13 of the injection device 12, the relationship between the screw length and the diameter is determined. The L / D shown is not limited to this, but may be as short as 10 to 20 as an example. Further, the compression ratio indicating the ratio of the groove cross-sectional area between the feed zone of the screw 14 and the not-shown metering zone is not limited to this, but may be about 1.0 to 3.0 as an example.

A nozzle (not shown) is fixed in front of the heating cylinder 13, and the injection into the mold cavity is performed through the nozzle during the injection. In addition, a supply hole 15 for a molten resin material containing fibers is provided in an upper portion near the rear portion of the heating cylinder 13. The supply hole 15 of the heating cylinder 13 may be provided at a position eccentric with respect to the axis O of the screw 14. A housing portion 16 (front plate) is fixed around a portion of the supply hole 15 of the heating cylinder 13, and a portion of the mounting hole 17 of the housing portion 16 corresponding to the supply hole 15 of the heating cylinder 13 is The tip of the material supply device 11 is fixedly attached so that it can be inserted.

Since the drive unit and the like of the injection device 12 are well-known, description thereof is omitted, but a measuring servo motor for rotating the screw 14, an injection servo motor for moving the screw 14 back and forth, and at the time of injection In addition, a load cell that detects a force applied in the axial direction of the screw 14 during weighing, a nozzle touch mechanism that moves the entire injection device back and forth and presses the nozzle against the nozzle touch surface of the mold are provided.

Next, the material supply apparatus 11 will be described. The material supply apparatus 11 has a supply cylinder 18 provided in the vertical direction. A plurality of heaters 18b and a plurality of thermocouples (not shown) are provided on the outer periphery of the outer shell portion 18a below the supply cylinder 18, and temperature control is possible for each zone of each heater 18b. An air cylinder 20 that is a driving means of the pushing device 19 (plunger device) is fixed to the rear end (upper end) of the supply cylinder 18. A pushing member 21 corresponding to a piston (plunger) is fixed to the tip of the rod 20a of the air cylinder 20. The pushing member 21 has an axial direction between a position S1 (see FIG. 1) and a closed position S2 (see FIG. 2) where a material supply opening 22 formed on a side surface of the supply cylinder 18 to be described later opens. Reciprocating movement is possible with a stroke of stroke zone S. The driving means of the push-in device 19 is not limited to an air cylinder, and may be a hydraulic cylinder, and may be an electric cylinder using a servo mechanism or the like when a highly accurate operation is required.

The pushing member 21 of the pushing device 19 will be further described with reference to FIG. 3. The pushing member 21 has a substantially cylindrical shape. The cylindrical side surface 40 of the pushing member 21 is formed with a plurality of grooves 43 that communicate from the front end side 41 (lower side in FIGS. 1 to 3) to the rear end side 42 (upper side in FIGS. 1 to 3). Has been. And between the groove part 43 and the groove part 43, the protrusion 44 continuous from the front end side 41 to the rear end side 42 is formed. Only the protruding surface 44 a of the protrusion 44 is brought into contact with the inner hole 18 c of the supply cylinder 18. The number of the groove portions 43 provided on the cylindrical side surface 40 is determined by the type of material and the size of the pushing device 19 and is not limited thereto, but is preferably about 10 to 30. Further, the depth D of the groove 43 is determined by the type of material and the size of the pushing device 19 and is not limited thereto, but is preferably about 0.3 mm to 2.0 mm. Further, the width W of the groove 43 is determined by the type of material and the size of the pushing device 19 and is not limited to this, but is preferably about 1.0 mm to 20 mm. In the present embodiment, as shown in an arrow view of FIG. 4 (a cross-sectional view of the pushing member 21 in the horizontal direction), the groove 43 and the ridge 44 are formed by curved surfaces, and no significant corners are formed. However, the boundary between the groove 43 and the protrusion 44 may be formed by a corner. Further, the shape of the groove surface 43a of the groove portion 43 may be an arc shape or a polygonal shape, and is not limited. The shape of the groove 43 in the vertical direction is generally a straight shape along the axial direction of the cylindrical shape, but is not limited and may be one having a predetermined angle with respect to the axial direction or one having a curve. Moreover, even if the adjacent groove parts 43 are connected by a connecting path in the middle, or have a branching or merging, it is only necessary that the groove parts communicate from the front end side to the rear end side.

A protrusion 45 is provided on the distal end side 41 of the pushing member 21 at least on the opening 22 side. As shown in FIG. 3, in the present embodiment, a conical recess 46 is formed on the distal end side 41, and a protrusion 45 is formed on the outer periphery of the inclined surface 46 a of the recess 46. As shown in FIG. 3, the protrusion 45 has a ring shape having a flat surface with a predetermined width. However, the protrusion 45 may have an acute angle shape or a curved surface. Since the rod 20a and the pushing member 21 of the air cylinder 20 of this embodiment may rotate around the axis of the rod 20a, even if the pushing member 21 rotates, the outer ring-shaped protrusion The part 45 always faces the opening 22.

Further, an opening 22 for supplying a material to which a resin material M containing fibers is supplied is provided on the side surface of the upper portion of the supply cylinder 18 where the heater 18b is not provided. An upstream supply cylinder 23 is connected toward the end. A hopper 24 for storing a resin material M containing fibers is connected to the upper portion of the upstream supply cylinder 23. Here, although the supply device and the mixing device of the fiber and the resin material to the hopper 24 are not described in detail, the fiber and the resin material are mixed and stored in the hopper 24 as a resin material M containing the fiber. . An opening / closing shutter may be provided in the opening 22 or the upstream supply cylinder 23. The upstream supply cylinder 23 may also serve as the bottom of the hopper.

The upper portion of the inner hole 18 c of the supply cylinder 18 including the material supply opening 22 is a stroke zone S of the pushing member 21 of the pushing device 19. The stroke zone S of the supply cylinder 18 is provided with a cooling mechanism (not shown) using a cooling fluid so that the material supplied into the inner hole 18c is not melted in the stroke zone S at an early stage. And the resin material M containing the fiber supplied to the stroke zone S from the said opening part 22 is pushed in toward the downward direction by the pushing member 21. FIG. A torpedo 25 is disposed below the stroke zone S of the inner hole 18 c of the supply cylinder 18. The torpedo 25 is supported by the outer portion 18a of the supply cylinder 18 by a plurality of pillars (not shown), and is attached to the shaft core of the inner hole 18c. The shape of the torpedo 25 is provided with a cylindrical portion having an equal cross-sectional area in the vertical direction in the middle, and has conical portions at the upper and lower portions of the cylindrical portion, respectively. A heater 30 such as a cartridge heater is provided inside the torpedo 25. Between the torpedo 25 and the outer portion 18a of the supply cylinder 18, a flow path 29 of the resin material M containing fibers is formed.

The outer portion 18 a of the supply cylinder 18 that faces the conical portion at the bottom of the torpedo 25 is a reduced diameter tapered portion 31. A narrowed portion 32 is provided below the reduced diameter tapered portion 31. An enlarged portion 34 is provided below the aperture portion 32. A dispersion supply unit 36 provided with a plurality of flow paths is provided below the expansion unit 34.

In the present embodiment, the torpedo 25 is provided in the supply cylinder 18, but the torpedo 25, the throttle unit 32, the dispersion supply unit 36, and the like are not essential for the present invention. In addition to the torpedo 25, a mixture of the resin material M containing fibers and a screw for controlling the timing in the heating cylinder 13 are provided in the axial direction, and a motor for driving the screw is also provided outside the supply cylinder 18. It may be provided. Furthermore, you may provide the mixing blade | wing, a baffle plate, etc. which mix the resin material M containing a fiber.

Next, the operation of the material supply device 11 of the plasticizing apparatus will be described. The fiber and the resin material are stored in the hopper 24 in a mixed state. In the present embodiment, the fiber material is carbon fiber, and a material in which a plurality of fibers are bundled by a sizing agent is supplied and stored separately from the resin material. The resin material is supplied and stored with pellets of thermoplastic resin. On the other hand, the heater 18b in each zone of the outer portion 18a of the supply cylinder 18 and the heater 30 of the torpedo 25 are respectively temperature-controlled to a set temperature by PID control from a control device (not shown). The stroke zone S of the heating cylinder is cooled by a cooling mechanism and temperature controlled to a set temperature.

As shown in FIG. 1, the air cylinder 20 of the pushing device 19 is operated, and the pushing member 21 is pulled up to the uppermost material supply position (position S1 where the opening 22 opens), thereby opening the material supply opening 22. Is communicated with the inside of the supply cylinder 18. Then, the resin material M containing the fibers in the hopper 24 falls by its own weight through the upstream supply cylinder 23 and the opening 22 and is supplied to the stroke zone S in the supply cylinder 18. As shown in FIG. 1, the material M containing fibers at this time is deposited in a biased manner in the supply cylinder so as to be higher on the opening 22 side and lower on the side farther from the opening 22.

Next, when the air cylinder 20 of the pushing device 19 is moved forward and the pushing member 21 moves forward, the material M including the fibers on the opening side first comes into contact with the protrusion 45 of the pushing member 21. The protrusion 45 of the pushing member 21 and the inclined surface 46a of the conical recess 46 move forward while moving the material M including the fiber on the opening 22 side to the side far from the opening 22, so that the fibers accumulated unevenly The material M containing is averaged in the horizontal direction in the supply cylinder 18. Further, when the pushing member 21 is further advanced, the opening 22 is closed and the space in the supply cylinder 18 is eliminated, and the material M containing the fibers is compressed, but the pressure at that time becomes substantially uniform in each part. And the material M containing a fiber is sent to each part of the flow path 29 around the torpedo 25 in a substantially uniform amount.

At the time of this pressing, a part (mainly fiber material) of the material M containing the fibers enters the space between the plurality of groove portions 43 of the pressing member 21 and the inner hole 18c of the supply cylinder 18, but the groove portion 43 is on the tip side 41. In this way, the material M containing fibers is not clogged and the pressure does not increase. As a result, even if the pushing device 19 continues to be operated a plurality of times, there is no hindrance to the lowering and raising operations of the pushing member 21. Alternatively, a large amount of fiber-containing material M is clogged between the inner hole 18c of the supply cylinder 18 on the opening 22 side and the pushing member 21, and as a result, the pushing member 21 is eccentric and the inner hole 18c of the feeding cylinder 18 and the pushing member are pushed. There is no galling between 21. In addition, when the material M containing fibers is pushed into the space from the distal end side 41 of the pushing member 21, a part thereof is released from the opening 22 side in the process of raising and lowering the pushing member 21, but otherwise The material M containing fibers is also released from the rear end side 42 of the pushing member 21. Since the material M including the fiber discharged from the rear end side 42 is collected around the rod 20a on the upper portion of the pushing member 21 in the supply cylinder 18, the operator periodically removes it. Note that the material M containing the fibers released from the rear end side 42 may be automatically discharged from the supply cylinder 18 when the pushing member 21 is raised and collected in a tray or the like (not shown).

On the other hand, the resin material M containing the fibers sent to the flow path 29 around the torpedo 25 is melted by heat transfer from the outer portion 18a of the supply cylinder 18 heated by the heater 18b and the torpedo 25 heated by the heater 30. Promoted. Also, melting is accelerated by shearing heat generated when the resin pellets pass through the flow path 29, sent to the lower side of the torpedo 25, and supplied to the heating cylinder 13 of the injection device 12 through the throttle unit 32 and the dispersion supply unit 36. Is done.

Next, the pushing member 51 of the pushing apparatus of the material supply apparatus of the plasticizing apparatus of another embodiment shown by FIG. 5 is demonstrated. The configuration of the plasticizing device, the material supply device, and the drive unit of the pushing device of the material supply device is the same as in FIG. In the pushing member 51 of FIG. 5, the cross-sectional area of the pushing member 51 in the direction perpendicular to the axial direction is provided with a predetermined width near the front end side body portion 54 and the rear end side 55 provided with a predetermined width near the front end side 53. The cross-sectional area of the central body portion 57 provided at a predetermined width between the front end side body portion 54 and the rear end side body portion 56 is formed smaller than the cross sectional area of the rear end side body portion 56 thus formed. Yes. In other words, the cylindrical side surface 52 of the pushing member 51 has a small diameter only at the central body portion 57, and the central body portion 57 is not in contact with the inner hole 18 c of the supply cylinder 18. A plurality of groove portions 58 are formed in the longitudinal direction similar to the example of FIG. 1 on the substantially cylindrical side surface of the front end side body portion 54, and a ridge portion 59 is formed between the groove portions 58 and 58. . A plurality of groove portions 60 are formed in the substantially cylindrical side surface of the rear end side body portion 56 in the same vertical direction as the front end side body portion 54, and a ridge portion 61 is formed between the groove portions 60 and 60. .

A central body portion 57 between the front end side body portion 54 and the rear end side body portion 56 is formed from a cylindrical surface. The diameter of the central body portion 57 is formed to be equal to or smaller than the diameter of the circle drawn along the bottom portion of the groove portion 58 of the front end side body portion 54 and the rear end side body portion 56. The length of the central body portion 57 in the vertical direction is not limited to this, but is preferably 20 to 80% of the length of the pushing member 51. Further, the diameter of the central body portion 57 is not limited to this, but it is desirable to make it 2-10 mm smaller than the inner diameter of the inner hole 18 c of the supply portion 18. The pushing member 51 includes a conical recess 62 on the distal end side 53 as in FIG. 1, and a ring-shaped projection 63 is formed around the conical recess 62. The pushing member 51 may also have a plurality of grooves in the small-diameter central body portion 57. In that case, the groove portion may be provided at the same position as the groove portion 58 of the front end side body portion 54 and the groove portion 60 of the rear end side body portion 56 or at a different position. In any case, a plurality of groove portions having a cylindrical surface between the plurality of groove portions 58 of the front end side body portion 54 and the plurality of groove portions 60 of the rear end side body portion 56 communicated from the front end side to the rear end side of the present invention. Corresponds to those formed.

Thus, the following effects can be expected by making the central body portion 57 of the cylindrical side surface 52 of the pushing member 51 have a small diameter (small cross-sectional area). That is, when the material M containing the fibers in the supply cylinder 18 is pressed by the pressing member 51, a part of the fibers and the resin powder is formed between the groove portion 58 of the front end body section 54 and the inner hole 18c of the supply cylinder 18. It is pushed into the space portion 65 formed between the small-diameter central body portion 57 and the inner hole 18c via the space portion 64. However, with the advancement of the pushing member 51, the space 65 is connected to the material supply opening 22, and a part of the material M including the fibers pushed into the space 65 is released from the pressure, so that the opening 22 side. Returned to Further, the material M including a part of the fibers in the space portion 65 passes through the space portion 66 formed between the groove portion 60 of the rear end side body portion 56 and the inner hole 18 c of the supply tube 18, and the rear end of the pushing member 51. It is discharged to the side (upper side). Therefore, the material M containing fibers is not clogged between the pushing member 51 and the supply cylinder 18 and the operation of the pushing device 19 is not hindered. Therefore, there are no plurality of groove portions in the front end side body portion 54 and the rear end side body portion 56, and the front end side body portion 54 and the rear end side body portion 56 are cylindrical surfaces, and only the central body portion 57 is reduced in diameter. A pressure releasing effect from the space portion 65 of the central trunk portion 57 is expected, which corresponds to an embodiment of the present invention.

Next, an outline of a material supply device 71 of a plasticizing apparatus according to still another embodiment shown in FIG. 6 will be described focusing on differences from the embodiment shown in FIG. In still another embodiment shown in FIG. 6, the supply cylinder 18 of the plasticizing apparatus includes a heater 18b for heating, a cooling mechanism for cooling, a torpedo 25, a throttle portion 32, a dispersion as shown in FIG. The supply unit 36 or the like is not provided. A cylinder 73 such as an air cylinder with a detent function is attached to the pushing device 72. The front end side 75 of the pushing member 74 of the pushing device 72 is provided with a protrusion 76 only on the side facing the material supply opening 22 formed in the supply tube 18 as shown in FIG. An inclined surface 77 that recedes toward the side opposite to the portion 22 is provided. In addition, the front end side 75 of the pushing member 74 may be provided with a protrusion 76 only on the opening 22 side and a horizontal flat surface at a portion following the inclined surface. In these, the protrusion 76 may have a certain width, an acute angle, or a curved surface.

Next, the operation of still another embodiment shown in FIG. 6 will be briefly described. As shown in FIG. 6, when the pushing member 74 is pulled up by the retreating operation of the cylinder 73 of the pushing device 72, the material M <b> 1 has a high height on the opening 22 side from the opening 22 into the supply cylinder 18. Unevenly deposited. Next, when the pushing member 74 moves forward by the forward movement of the cylinder 73, the protrusion 76 comes into contact with the material M1 accumulated on the opening 22 side first. The protrusion 76 and the inclined surface 77 of the pushing member 74 move forward while pushing the material M1 on the opening 22 side away from the opening 22, so that the unevenly deposited material M1 is averaged horizontally in the supply cylinder 18. It becomes. Further, by further advancement of the pushing member 74, the space in the supply cylinder 18 is eliminated, and the supply cylinder 18 is almost uniformly pressed in the cross-sectional direction orthogonal to the axial direction and stably supplied into the heating cylinder.

1 to 6, the inner hole 18c of the supply cylinder 18 has a circular cross section, and the pressing member is also substantially cylindrical. However, the inner hole 18c may have an elliptical shape, a polygonal shape or the like. In this case, the pressing member is also provided with a cross-sectional shape substantially corresponding thereto. When the cross-sectional shape of the pressing member is not substantially circular and the cross-sectional area of the space portion outside the central body portion is increased, the shape of the central body portion is also provided in a cross-sectional shape substantially corresponding to the shape of the inner hole 18c.

The present invention is not enumerated one by one, but is not limited to the above-described embodiments, and those that combine the above descriptions and those modified by a person skilled in the art based on the spirit of the present invention, It goes without saying that it applies.

The plasticizing apparatus to which the material supply apparatus of the present invention is attached may be a plasticizer for a pre-plastic (registered trademark) type injection molding machine provided with a separate injection plunger, an extruder, or a feeding apparatus for a stamping molding machine. . Further, the material supply device of the present invention is generally attached to the portion of the supply hole at the rear of the heating cylinder of the plasticizing device, but the heating cylinder provided separately from the material supply hole at the rear of the heating cylinder. It may be attached to the supply hole portion of the intermediate portion.

The various plasticizing devices and material supply devices described above may be arranged in any of the vertical direction, the horizontal direction, and the oblique direction. Depending on the orientation of the material supply device, the material supplied into the supply cylinder is not always supplied biased toward the opening. When the material is unevenly deposited on the side different from the opening in the supply cylinder due to gravity, a protrusion on the tip side of the pushing member of the pushing device is provided on the side on which the material is unevenly deposited. .

Moreover, about the fiber supplied to the material supply apparatus 11, it is not limited to carbon fiber, Other reinforcing fibers, such as glass fiber, may be sufficient. Moreover, although the length of the fiber supplied is not limited, It is desirable to select from what is generally marketed, and it is about 3-30 mm as an example. Further, the resin material melted by the plasticizing apparatus is not limited to the thermoplastic resin, and in the case of the resin material, a thermosetting material may be used. The material to be melted may be a metal material, a ceramic material, various naturally derived materials, or the like. Further, the shape of the material to be melted is not limited, and may be a powder or a material having a very small particle diameter in addition to pellets. The fiber to be supplied and the material to be melted are not limited to one type, and a coloring material and a foam material may be supplied simultaneously. The material supply device 11 can also be used for molding a resin material that does not use fibers. In the case of the above-described powder or a material having a very small particle diameter, a powder or the like is present between the supply cylinder and the pushing device. The present invention may be useful because clogging problems may occur.

11, 71 Plasticizer material supply device 12 Injection device 13 Heating cylinder 14 Screw 18 Supply cylinder 19, 72 Pushing device 20 Air cylinder 21, 51, 74 Pushing member 22 Opening 23 Upstream supply tube 24 Hopper 25 Torpedo 43, 58, 60 Groove 44, 59, 61 Projection 45, 63, 76 Projection M Material containing fiber

Claims (5)

In the material supply device of the plasticizing device that supplies the material from the supply tube to the heating tube,
An opening for supplying material formed on the side surface of the supply tube;
An upstream supply tube connected to the opening;
A pressing member provided inside the supply cylinder and reciprocally moved in the axial direction between a position where the opening is opened and a position where the opening is closed;
A material supply apparatus for a plasticizing apparatus, wherein a plurality of grooves communicating from the front end side to the rear end side are formed on a side surface of the pushing member. In the material supply device of the plasticizing device that supplies the material from the supply tube to the heating tube,
An opening for supplying material formed on the side surface of the supply tube;
An upstream supply tube connected to the opening;
A pressing member provided inside the supply cylinder and reciprocally moved in the axial direction between a position where the opening is opened and a position where the opening is closed;
The cross-sectional area in the direction perpendicular to the axial direction of the pushing member is the cross-sectional area of the central body part between the front end side body part and the rear end side body part with respect to the cross sectional area of the front end side body part and the rear end side body part. The material supply apparatus of the plasticizing apparatus characterized by being formed small. In the material supply device of the plasticizing device that supplies the material from the supply tube to the heating tube,
An opening for supplying material formed on the side surface of the supply tube;
An upstream supply tube connected to the opening;
A pressing member provided inside the supply cylinder and reciprocally moved in the axial direction between a position where the opening is opened and a position where the opening is closed;
A material supply device for a plasticizing apparatus, wherein a concave portion is formed on a distal end side of the pushing member, and a protrusion is formed on an outer periphery of the concave portion. In the material supply device of the plasticizing device that supplies the material from the supply tube to the heating tube,
An opening for supplying material formed on the side surface of the supply tube;
An upstream supply tube connected to the opening;
A pressing member provided inside the supply cylinder and reciprocally moved in the axial direction between a position where the opening is opened and a position where the opening is closed;
A material supply device for a plasticizing apparatus, wherein a protrusion is formed on a side where material is deposited in an uneven manner in a supply cylinder on the tip side of the pushing member. The material supply device for a plasticizing apparatus according to claim 3 or 4, wherein a protrusion is formed at least on the side of the opening on the tip side of the pushing member.

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