JP2020152069A - Shaping device - Google Patents

Abstract

To suppress occurrence of a gap in a folded part of a shaping material.SOLUTION: A shaping device includes: a part to be discharged to which a linear shaping material in which a bundle of continuous fibers is impregnated with a resin is discharged; a winding part that is arranged in the part to be discharged and around which the shaping material is wound; a discharge mechanism which is moved relatively to the part to be discharged, and discharges the shaping material to the part to be discharged so that the shaping material is folded while winding it around the winding part; a heating and pressurizing part which heats and pressurizes the shaping material discharged to the part to be discharged; and a movement mechanism which moves the winding part in a direction away from the part to be discharged while the shaping material is wound around the winding part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a modeling apparatus.

Patent Document 1 discloses a fiber bundle arranging device that arranges fiber bundles while hanging them on a plurality of pins fixed to a frame body.

Japanese Unexamined Patent Publication No. 2008-285798

Here, in the modeling apparatus, when the modeling material is discharged to the discharged portion such as a table so as to be folded while winding the modeling material around the winding portion such as a pin, a gap is generated in the folded portion of the modeling material. There is.

An object of the present invention is to suppress the formation of a gap at the folded portion of the molding material as compared with the configuration in which the wound portion is fixed to the discharged portion.

The first aspect is a discharged portion in which a linear molding material impregnated with a resin in a bundle of continuous fibers is discharged, a winding portion arranged in the discharged portion and around which the molding material is wound, and a winding portion. A discharge mechanism that moves relative to the discharged portion and discharges the modeling material to the discharged portion so as to wrap the molding material around the winding portion and folds back, and a molding discharged to the discharged portion. It is provided with a heating and pressurizing portion that heats and pressurizes the material, and a moving mechanism that moves the winding portion in a direction away from the discharged portion while the molding material is being wound around the winding portion.

In the second aspect, the winding portion is formed to be tapered and has a tip portion whose tip surface is in contact with the discharged portion.

In the third aspect, the winding portion is formed continuously on the tip surface so as to gradually separate from the discharged portion from the tip surface toward the outer peripheral side, and the facing surface facing the discharged portion is formed. Have.

In the fourth aspect, the heating and pressurizing portion moves relative to the discharged portion by a path passing through the outer peripheral side of the winding portion, and heats and pressurizes the modeling material discharged to the discharged portion.

In the fifth aspect, the heating and pressurizing portion moves relative to the discharged portion by a path passing from the inner peripheral end of the folded portion of the molding material to the outside, and the molding material discharged to the discharged portion is transferred. Heat and pressurize.

In the sixth aspect, the heating and pressurizing portion is wider than the width of the modeling material and moves relative to the discharged portion by a path passing through a position offset to the outer peripheral side of the folded portion of the modeling material. , The modeling material discharged to the discharged portion is heated and pressurized.

In the seventh aspect, the discharge mechanism has a first operation of discharging the modeling material to the discharged portion so as to wrap the modeling material around the winding portion and folding it back at a first angle, and the molding material is discharged. The second operation of discharging the modeling material to the discharged portion so as to be curved at a second angle smaller than the first angle while being wound around the winding portion can be executed, and the moving mechanism is described as described above. In the first operation, while the molding material is being wound around the winding portion, the winding portion is moved in a direction away from the discharged portion, and in the second operation, the molding material is wound. While the hook is wound around the hook, the hook is kept in contact with the discharged portion.

In the eighth aspect, the discharge mechanism is further enabled to perform a third operation of discharging the modeling material to the discharged portion so as to be curved at a third angle smaller than the second angle, and the moving mechanism. Causes the winding portion to stay at a position away from the discharged portion in the third operation.

In the ninth aspect, the discharge mechanism has a first operation of discharging the modeling material to the discharged portion so as to wrap the modeling material around the winding portion and fold back at the first angle, and from the first angle. The second operation of discharging the modeling material to the discharged portion so as to be curved at a small second angle can be performed, and the moving mechanism is such that the modeling material is wound by the molding material in the first operation. While being wound around the portion, the wound portion is moved in a direction away from the discharged portion, and in the second operation, the wound portion is kept at a position away from the discharged portion.

According to the configuration of the first aspect, it is possible to prevent a gap from being generated at the folded portion of the modeling material, as compared with the configuration in which the wound portion is fixed to the discharged portion.

According to the configuration of the second aspect, it is possible to prevent a gap from being generated at the folded portion of the modeling material, as compared with the configuration in which the thickness of the tip portion of the winding portion is constant.

According to the configuration of the third aspect, as compared with the configuration in which the facing surface is continuously formed on the tip surface so as to be gradually separated from the discharged portion from the tip surface toward the outer peripheral side, the folded portion of the modeling material The formation of unevenness on the modeling material that has moved to the gap is suppressed.

According to the configuration of the fourth aspect, the heating / pressurizing portion is a winding portion as compared with the configuration in which the heating / pressurizing portion moves relative to the discharged portion by a path passing through the inner peripheral side of the outer peripheral side of the winding portion. Interference with is suppressed.

According to the configuration of the fifth aspect, the heating / pressurizing portion is wound as compared with the configuration in which the heating / pressurizing portion moves relative to the discharged portion by a path passing inside the inner peripheral end of the folded portion of the modeling material. Interference with the hanging part is suppressed.

According to the configuration of the sixth aspect, the folding of the modeling material is compared with the configuration in which the heating and pressurizing portion moves relative to the discharged portion by a path passing through uniform positions in the inner and outer peripheral directions of the folding portion of the modeling material. Poor heating and pressurizing the outer peripheral side of the portion is suppressed.

According to the configuration of the seventh aspect, the moving operation of the winding portion becomes unnecessary during the second operation.

According to the configuration of the eighth aspect, the moving operation of the winding portion becomes unnecessary during the third operation.

According to the configuration of the ninth aspect, the moving operation of the winding portion becomes unnecessary during the second operation.

It is the schematic which shows the structure of the modeling apparatus which concerns on this embodiment. It is a schematic diagram which shows the structure of the modeling unit which concerns on this embodiment. It is the schematic which shows the structure of the pin which concerns on this embodiment. It is sectional drawing of the bundle of continuous fibers used in the modeling apparatus which concerns on this embodiment. It is sectional drawing of the modeling material used for the modeling apparatus which concerns on this embodiment. It is sectional drawing which shows the state which the shaping material shown in FIG. 5 was deformed into a flat shape. It shows the modeling material discharged from the discharge part which concerns on this embodiment. It is the schematic which shows the tip part of the pin which concerns on this embodiment. It is the schematic which shows the tip part of the pin which concerns on the modification. It is a figure which shows the movement path of the modeling unit which concerns on this embodiment. It is a figure which shows the movement path of the modeling unit which concerns on this embodiment. It is a figure which shows the movement path of the modeling unit which concerns on this embodiment. It is a figure which shows the state which the shaping material was wound around the pin which concerns on this embodiment. It is a top view which shows the heating pressure roll which concerns on this embodiment. It is a block diagram which shows the structure of the control part of the modeling apparatus which concerns on this embodiment. It is a figure which shows the U-shaped part of the modeled object which is modeled by the modeling apparatus which concerns on this embodiment. It is sectional drawing of the modeling material wound around the pin which concerns on this embodiment. It is a top view which shows the folded-back part of the modeling material in the comparative example.

An example of the embodiment according to the present invention will be described below with reference to the drawings. The arrow H shown in the figure indicates the device vertical direction (vertical direction), the arrow W indicates the device width direction (horizontal direction), and the arrow D indicates the device depth direction (horizontal direction).

(Modeling device 10)
First, the modeling apparatus 10 will be described. FIG. 1 shows a schematic configuration of the modeling apparatus 10.

The modeling device 10 shown in FIG. 1 is a device for modeling a modeled object. Specifically, the modeling apparatus 10 is a three-dimensional modeling apparatus (so-called 3D printer) of a so-called fused deposition modeling method (also referred to as an FDM (Fused Deposition Modeling) method). More specifically, the modeling device 10 is an device that forms a modeled object by forming each layer with the modeling material 100 based on the layer data of the plurality of layers.

As shown in FIG. 1, the modeling apparatus 10 according to the present embodiment includes a base 14, pins 30 and 31, pin moving mechanisms 34 and 35, a modeling unit 12, and a unit moving mechanism 18. There is. Further, as shown in FIG. 2, the modeling apparatus 10 includes a heating and pressing roll 56 and a control unit 16. Further, the modeling device 10 includes elevating mechanisms 36 and 37 as shown in FIG. The modeling material 100 (see FIG. 5) used in the modeling apparatus 10 is a linear modeling material in which a bundle 110 of continuous fibers 120 (hereinafter referred to as a fiber bundle 110) is impregnated with a resin 112. The linear shape means a shape having a length in a certain direction, and the cross-sectional shape of the modeling material 100 does not matter. Therefore, the cross-sectional shape of the modeling material 100 may be, for example, a circular shape or a flat shape.

[Table 14]
The platform 14 shown in FIGS. 1 and 2 is an example of the discharged portion. Specifically, the table 14 is a table on which the modeling material 100 is discharged. More specifically, the table 14 is a table on which the modeling material 100 discharged from the table 14 is placed. Furthermore, it is a table on which a modeled object is modeled by the modeling material 100.

The base 14 is arranged below the modeling unit 12, as shown in FIGS. 1 and 2. The table 14 has a surface to be discharged 14A from which the modeling material 100 is discharged. It can be said that the discharged surface 14A is a surface on which the modeling material 100 is placed. The discharged surface 14A faces the modeling unit 12 side. That is, the platform 14 faces upward. More specifically, the discharged surface 14A is a horizontal plane.

[Modeling unit 12]
The modeling unit 12 shown in FIGS. 1 and 2 is an example of a discharge mechanism. Specifically, the modeling unit 12 is a unit that discharges the modeling material 100 to the table 14. More specifically, as shown in FIG. 2, the modeling unit 12 includes a housing 60, a supply mechanism 20, a transport unit 40, and a discharge unit 50.

(Case 60)
The housing 60 houses each part of the supply mechanism 20 and a transport part 40. The housing 60 is also a support that supports each part of the supply mechanism 20 and the transport part 40.

(Supply mechanism 20)
The supply mechanism 20 is a mechanism for supplying the linear modeling material 100 in which the fiber bundle 110 is impregnated with the resin 112. Specifically, the supply mechanism 20 includes a supply unit 21, a winding roll 22, and an impregnation unit 24.

(Supply unit 21)
The supply unit 21 has a function of supplying the fiber bundle 110 to the winding roll 22. Specifically, the supply unit 21 is composed of a reel or spool around which the fiber bundle 110 is wound. The supply unit 21 is rotatably supported with respect to the housing 60.

The supply unit 21 rotates the fiber bundle 110 in the counterclockwise direction of FIG. 2 to feed the fiber bundle 110 in the device width direction (left side in FIG. 2).

The fiber bundle 110 is a bundle of a plurality of continuous fibers 120 without being twisted. In the present embodiment, as an example, carbon fibers having a diameter of 0.005 [mm] are used as the continuous fibers 120, and the continuous fibers 120 are bundled, for example, about 1000 to 12000 fibers. Then, in the bundled state, as shown in FIG. 4, the cross section of the fiber bundle 110 has a circular shape having a diameter (D1 in the figure) of 0.3 [mm] or more and 0.4 [mm] or less. .. In FIG. 4, the cross section is shown by reducing the number of fibers.

(Roll 22)
As shown in FIG. 2, the winding roll 22 is arranged on one side of the supply unit 21 (left side in FIG. 2) in the device width direction, and is rotatably supported with respect to the housing 60. ing. Then, the fiber bundle 110 sent out from the supply unit 21 is wound around the winding roll 22.

The fiber bundle 110 sent out from the supply unit 21 in the width direction of the apparatus is wound around the winding roll 22 to change its direction downward and is sent downward. Therefore, the winding roll 22 has a function of guiding the fiber bundle 110 downward.

(Immersion part 24)
As shown in FIG. 2, the impregnated portion 24 is an impregnated portion in which the fiber bundle 110 is impregnated with the resin 112 to form the modeling material 100. As shown in FIG. 2, the impregnation portion 24 is arranged on the downstream side with respect to the winding roll 22 in the feeding direction in which the modeling material 100 is sent from the supply portion 21. Specifically, the impregnated portion 24 is arranged on the lower side with respect to the winding roll 22.

The impregnated portion 24 has a passing portion 26 through which the fiber bundle 110 passes, and a resin sending portion 28 that sends the resin 112 to the passing portion 26.

A resin 112 is housed inside the resin delivery section 28, and the resin delivery section 28 includes a heater 28A for heating the housed resin 112 and a screw 28B for sending the heated resin to the passing section 26. Have. In the present embodiment, as an example, a polypropylene resin is contained as the resin 112 inside the resin delivery unit 28, and the heater 28A contains the stored polypropylene resin, for example, 200 [° C.] or more and 300 [° C.] or less. It is melted by heating to.

The passing portion 26 is arranged so that the fiber bundle 110 sent out from the supply portion 21 passes through. Further, the passing portion 26 has a cylindrical shape extending in the vertical direction so as to surround the receiving port 26A for receiving the fiber bundle 110 sent out from the supply section 21 and the fiber bundle 110 passing through the inside from the circumferential direction. It has a columnar retention portion 26B in which the resin is retained. Further, the passing portion 26 includes a discharge head 26C for discharging the molding material 100 in which the resin 112 has invaded the fiber bundle 110, a heater 26D attached to the peripheral wall and heating the resin 112 staying in the staying portion 26B. have. The receiving port 26A, the retaining portion 26B, and the discharging head 26C are arranged in this order from above to below. In the present embodiment, as an example, the heater 26D heats the polypropylene resin retained in the retaining portion 26B to 200 [° C.] or more and 300 [° C.] or less.

Then, in the impregnation section 24, the resin delivery section 28 sends the heated resin 112 to the retention section 26B of the passing section 26. Further, the passing portion 26 impregnates the fiber bundle 110 that receives from the receiving port 26A and passes through the retaining portion 26B with the resin 112. Further, the passing portion 26 discharges the linear modeling material 100 in which the resin 112 has invaded the fiber bundle 110 from the discharge head 26C. Further, as shown in FIG. 5, the gaps between the fibers are impregnated with the resin 112 in the state of being discharged from the discharge head 26C, and the cross section of the modeling material 100 has a diameter of 0.3 [mm]. ] Or more and 0.4 [mm] or less. In FIG. 5, the cross section is shown by reducing the number of fibers.

By impregnating the fiber bundle 110 with the resin 112 in this way, the fibers are adhered to each other by the resin 112. As a result, the impregnated portion 24 functions as an adhesive means for adhering the fibers to each other.

(Transport section 40)
The transport unit 40 shown in FIG. 2 has a function of transporting the modeling material 100 from the supply mechanism 20 to the discharge unit 50. As shown in FIG. 2, the transport unit 40 is arranged on the downstream side with respect to the impregnation unit 24 in the feed direction in which the modeling material 100 is sent from the supply unit 21. Specifically, the transport unit 40 is arranged on the lower side with respect to the impregnation unit 24.

The transport unit 40 has, for example, a pair of transport rolls 42 and 44. The transport roll 44 is arranged on the opposite side of the transport roll 42 with the modeling material 100 interposed therebetween.

The transport rolls 42 and 44 are rotatably supported by the housing 60. The transport rolls 42 and 44 are rotated in the circumferential direction by transmitting a driving force from a driving means (not shown). In the transport unit 40, the rotating transport rolls 42, 44 are adapted to sandwich and transport the modeling material 100, for example, at a speed of 30 [mm / sec]. The transport speed of the modeling material 100 is not limited to 30 [mm / sec].

In the transport unit 40, the pair of transport rolls 42, 44 sandwich and pressurize the modeling material 100 to deform the modeling material 100 having a circular cross section into a flat cross section. Here, the flat cross section means that, as shown in FIG. 6, the length in one direction of the cross section is longer than the length in the crossing direction in which the cross section intersects with one direction, and the crossing direction It is a cross section in which a pair of planes (hereinafter referred to as "flat plane 100D") facing the above direction are formed. That is, the flat plane 100D is a pair of flat planes facing in the lateral direction.

The pair of transport rolls 42 and 44 may have a heating portion for heating the modeling material 100. Further, the transport unit 40 may have a transport belt instead of the transport roll.

(Discharge unit 50)
As shown in FIG. 2, the discharge unit 50 has a function of discharging the modeling material 100 to the table 14. The discharge unit 50 is arranged on the downstream side with respect to the transport unit 40 in the feed direction in which the modeling material 100 is sent from the supply unit 21. Specifically, the discharge unit 50 is arranged on the lower side with respect to the transport unit 40.

Further, the discharge unit 50 includes an inflow port 50C into which the modeling material 100 sent from the transport unit 40 flows in, and a discharge port 50B in which the modeling material 100 flowing in from the inflow port 50C is discharged to the discharged surface 14A of the base 14. ,have. The discharge unit 50 may have a heating unit that heats the modeling material 100.

In the present embodiment, as shown in FIG. 7, the modeling material 100 is discharged from the discharge port 50B of the discharge unit 50 so that the flat flat surface 100D of the modeling material 100 contacts the discharged surface 14A of the base 14. As described above, the cross-sectional shape of the modeling material 100 discharged from the modeling unit 12 is a flat shape, but the cross-sectional shape may be a circular shape, and the cross-sectional shape may be a specific shape. It is not limited.

[Pins 30, 31]
As shown in FIG. 3, pins 30 and 31 are examples of winding portions. As shown in FIG. 3, the pins 30 and 31 are movably supported in the vertical direction with respect to the supports 32 and 33, respectively. In other words, the pins 30 and 31 are movably supported by the supports 32 and 33 in the direction perpendicular to the discharge surface 14A of the base 14, respectively.

Specifically, the pins 30 and 31 are arranged on the discharge surface 14A of the base 14, and the winding position (the position shown by the solid line in FIG. 3) on which the modeling material 100 is wound and the discharge position rather than the winding position. It is possible to move between the separated position (the position indicated by the alternate long and short dash line in FIG. 3) away from the surface 14A. The winding position is an example of the contact position.

Specifically, the winding position is, for example, a position where the tip surfaces 30A and 31A of the pins 30 and 31 come into contact with the discharged surface 14A of the base 14 when forming the lowermost layer of the modeled object. Further, the separation position is a position where the tip surfaces 30A and 31A of the pins 30 and 31 are separated from the discharge surface 14A of the base 14. The tip surfaces 30A and 31A of the pins 30 and 31 are located at positions higher than the height of the modeling material 100 in the state of being wound around the pins 30 and 31 at the separated positions.

Further, as shown in FIG. 8, the pins 30 and 31 are tapered and have tip portions 30B and 31B in which the tip surfaces 30A and 31A come into contact with the discharge surface 14A of the base 14. In other words, the tip surfaces 30A and 31A are contact surfaces that come into contact with the discharged surface 14A. Further, the tip surfaces 30A and 31A are the surfaces arranged on the lowermost side (the surface to be discharged 14A). Further, the pins 30 and 31 are continuously formed on the tip surfaces 30A and 31A so as to gradually move away from the discharge surface 14A of the table 14 toward the outer peripheral side from the tip surfaces 30A and 31A, and the pins 30 and 31 are continuously formed on the table 14 to be discharged. It has facing surfaces 30C and 31C facing the surface 14A.

Specifically, the lower surfaces 30D and 31D including the tip surfaces 30A and 31A and the facing surfaces 30C and 31C of the pins 30 and 31 are formed by a curved surface that is convex downward.

The pins 30 and 31 are not limited to the configuration in which the lower surfaces 30D and 31D are formed of a curved surface having a downward convex shape. For example, as shown in FIG. 9, the tip surfaces 30A and 31A are formed by a plane along the discharged surface 14A, and the facing surfaces 30C and 31C are composed of inclined surfaces inclined with respect to the tip surfaces 30A and 31A. You may.

Since the pin 30 and the pin 31 are configured in the same manner, FIGS. 3, 8 and 9 are used as common drawings showing the pin 30 and the pin 31.

(Elevating mechanism 36, 37)
The elevating mechanisms 36 and 37 shown in FIG. 3 are examples of moving mechanisms. The elevating mechanism 36, 37 raises and lowers the pins 30 and 31 in the vertical direction. Specifically, the elevating mechanisms 36 and 37 have pins 30 and 31, respectively, between the winding position (the position shown by the solid line in FIG. 3) and the separation position (the position shown by the alternate long and short dash line in FIG. 3). It is a mechanism to move.

More specifically, the elevating mechanisms 36 and 37 are configured as follows, as an example. The elevating mechanism 36, 37 has a rack 72 formed on the side surface of the pins 30 and 31, and a pinion 74 that meshes with the rack 72. Then, the pinion 74 is rotated forward and reverse by a drive unit (not shown) to move the pins 30 and 31 between the winding position and the separated position.

The moving mechanism is not limited to the above configuration, and may be, for example, a configuration using an actuator or an air cylinder that directly moves the pins 30 and 31, or another configuration.

[Pin movement mechanisms 34 and 35]
The pin moving mechanisms 34 and 35 shown in FIGS. 1 and 3 are mechanisms for moving the pin moving mechanisms 34 and 35 along the discharge surface 14A of the base 14. Specifically, the pin moving mechanisms 34 and 35 are mechanisms for moving the supports 32 and 33 in the device width direction and the device depth direction.

More specifically, the pin moving mechanisms 34 and 35 are capable of moving the supports 32 and 33 to arbitrary positions in the device width direction and the device depth direction. As a result, the pin moving mechanisms 34 and 35 can move the pins 30 and 31 in a curved shape in a plan view. That is, the pins 30 and 31 are configured to be movable on a curve along the discharge surface 14A relative to the base 14.

The pin moving mechanisms 34 and 35 further move the supports 32 and 33 in the vertical direction of the device. As a result, the distances of the pins 30 and 31 from the discharged surface 14A of the base 14 are adjusted. As the pin moving mechanisms 34 and 35, for example, a triaxial robot capable of moving the supports 32 and 33 to arbitrary positions in the device vertical direction, the device width direction, and the device depth direction is used.

[Unit movement mechanism 18]
The unit moving mechanism 18 shown in FIGS. 1 and 2 is a mechanism for moving the modeling unit 12. Specifically, the unit moving mechanism 18 is a mechanism for moving the modeling unit 12 in the device width direction and the device depth direction.

More specifically, the unit moving mechanism 18 is capable of moving the modeling unit 12 to arbitrary positions in the device width direction and the device depth direction. As a result, the unit moving mechanism 18 can move in a curved line along the discharge surface 14A of the base 14, as shown in FIGS. 10, 11 and 12. In the example shown in FIG. 10, the modeling unit 12 is moved so as to be curved at a bending angle θA (which can also be said to be a rotation angle θA) of 45 degrees. Specifically, in the example shown in FIG. 10, the modeling unit 12 is curved at a bending angle θA of 45 degrees in the clockwise direction in FIG. 10, and then has a bending angle of 45 degrees in the counterclockwise direction in FIG. It moves in an S shape so as to be curved at θA.

In the example shown in FIG. 11, the modeling unit 12 is moved so as to be curved at a bending angle θA of 90 degrees. Specifically, in the example shown in FIG. 11, the modeling unit 12 is curved at a bending angle θA of 90 degrees in the clockwise direction in FIG. 11, and then has a bending angle of 90 degrees in the counterclockwise direction in FIG. It moves in an S shape so as to be curved at θA.

In the example shown in FIG. 12, the modeling unit 12 is moved so as to be folded back at a bending angle θA of 180 degrees. The curve in the movement of the modeling unit 12 means, for example, that the bending angle θA moves on the curve at an angle exceeding 0 degrees. Further, the folding back in the movement of the modeling unit 12 means, for example, moving on a curve at an angle in which the bending angle θA exceeds 90 degrees and is less than 360 degrees.

Then, the modeling unit 12 is moved in a curved shape around the pin 30 by the unit moving mechanism 18, for example, along the discharge surface 14A of the base 14, as shown in FIG. 12, in FIGS. 13 and 14. As shown in the above, the modeling material 100 is wound around the pin 30 by discharging the modeling material 100 from the discharging unit 50. When the modeling material 100 is wound around the pin 30, the modeling material 100 is folded back at the pin 30 to form the folded-back portion 150.

Similarly, the modeling unit 12 discharges the modeling material 100 from the discharge unit 50 while moving around the pin 31 in a curved shape with respect to the pin 31, so that the modeling material 100 is wound around the pin 31 and folded back. Part 150 is formed.

The unit moving mechanism 18 further moves the modeling unit 12 in the vertical direction of the device. As a result, the distance of the modeling unit 12 from the discharged surface 14A of the table 14 is adjusted. As the unit moving mechanism 18, for example, a triaxial robot that can move the modeling unit 12 to arbitrary positions in the device vertical direction, the device width direction, and the device depth direction is used.

[Heating and pressing roll 56]
The heating and pressurizing roll 56 is an example of a heating and pressurizing unit. The heating and pressurizing roll 56 has a function of heating and pressurizing the modeling material 100 discharged from the discharging unit 50. The heating and pressurizing roll 56 has a heater as a heating unit inside.

As shown in FIG. 13, the heating and pressurizing roll 56 is rotatably supported by, for example, a support 58. The support 58 is supported by the modeling unit 12, and the heating and pressurizing roll 56 is configured to move following the modeling unit 12.

Then, the heating and pressurizing roll 56 heats the modeling material 100 and pressurizes the modeling material 100 by sandwiching the modeling material 100 with the table 14. By heating and pressurizing the modeling material 100 by the heating and pressing roll 56, the heights of the modeling material 100 discharged to the table 14 are made uniform. In other words, the heating and pressurizing roll 56 heats and pressurizes the modeling material 100 to smooth the modeling material 100 discharged to the table 14. In the present embodiment, for example, the heating and pressurizing roll 56 is driven to rotate when it comes into contact with the modeling material 100. The heating and pressurizing roll 56 may be rotationally driven by a driving unit (not shown).

The position of the heating and pressurizing roll 56 in the axial direction (position in the depth direction of the paper surface in FIG. 13) is set as follows. As shown in FIG. 14, the heating and pressurizing roll 56 is arranged at a position where it moves with respect to the discharged surface 14A by a path passing through the outer peripheral side of the pin 30.

In other words, the heating and pressurizing roll 56 is arranged at a position where it moves with respect to the discharged surface 14A by a path passing from the inner peripheral end 150A of the folded-back portion 150 of the modeling material 100 to the outside. The inner peripheral end 150A of the folded portion 150 is the inner peripheral end 150A of the folded portion 150 in the modeling material 100 before the heating and pressurizing by the heating and pressing roll 56 is performed.

Further, the heating and pressurizing roll 56 is wider than the width of the modeling material 100, and is arranged at a position where it moves with respect to the discharged surface 14A by a path passing through a position offset to the outer peripheral side of the folded portion 150 of the modeling material 100. ing. Then, the heating and pressurizing roll 56 moves at the position and heats and pressurizes the modeling material 100 discharged to the discharged surface 14A.

When the heating and pressurizing roll 56 moves around the pin 31, it is displaced in the axial direction to a position where it moves with respect to the discharged surface 14A by a path passing through the outer peripheral side of the pin 31 (not shown). Omitted).

[Control unit 16]
The control unit 16 controls the operation of each unit of the modeling device 10. Specifically, the control unit 16 has a storage unit composed of a ROM (rom), a storage, or the like in which the program is stored, and a processor that operates according to the program, and the program stored in the storage unit. The operation of each part of the modeling apparatus 10 is controlled by reading and executing.

As shown in FIG. 15, the control unit 16 has at least a movement mechanism control unit 16A that controls the drive of the unit movement mechanism 18 and a movement mechanism control unit that controls the drive of the pin movement mechanisms 34 and 35 as a functional configuration. It has 16B and a movement mechanism control unit 16C that controls the drive of the elevating mechanisms 36 and 37.

The control unit 16 has a unit moving mechanism 18, pin moving mechanisms 34, 35, and a heating / pressurizing roll 56 so that the following modeling operations are executed based on a plurality of layer data created from three-dimensional data of the modeled object. , Controls the operations of the elevating mechanisms 36 and 37, the supply mechanism 20, and the transport unit 40.

(Modeling operation of modeling device 10)
Here, a modeling operation for modeling a modeled object including a curved portion will be described based on a plurality of layer data created from three-dimensional data of the modeled object. Specifically, based on the layer data, as shown in FIG. 16, a modeling operation for modeling a modeled object including a U-shaped portion 200 having a linear portion 202 and a curved portion 203 will be described. In this example, the case where the pin 30 is used among the pins 30 and 31 will be described.

In the case of modeling the U-shaped portion 200, the arrangement position which is the boundary between the curved portion 203 and the linear portion 202 and is the inner peripheral side of the curved portion 203 (the position of the reference numeral SA in FIG. 16). In addition, the pin 30 is moved along the discharge surface 14A by the pin moving mechanism 34. Further, the elevating mechanism 36 lowers the pin 30 to the winding position. The pin 30 is arranged so that the center is located at the arrangement position SA, for example.

Then, as shown in FIG. 12, the unit moving mechanism 18 moves the modeling unit 12 in a U shape with respect to the base 14 so that the modeling unit 12 turns back the pin 30 at a bending angle θA of 180 degrees. ..

Specifically, first, the modeling unit 12 moves linearly in a plan view in the first direction M1 (see FIG. 12) along the discharge surface 14A of the table 14, for example (hereinafter, the first linear movement). ). The first direction M1 is, for example, the device width direction W shown in FIG. Next, the modeling unit 12 moves the outer circumference of the pin 30 in a curved shape at a bending angle θA of 180 degrees with respect to the discharge surface 14A of the base 14, for example (hereinafter referred to as curved movement). Next, the modeling unit 12 moves relative to the discharge surface 14A of the base 14 in a linear direction in a plan view in the direction M2 (see FIG. 12) opposite to the first direction M1 (hereinafter, the second direction). Linear movement).

As a result, the modeling material 100 discharged from the discharging unit 50 of the modeling unit 12 is wound around the pin 30 as shown in FIGS. 13 and 14. In other words, the modeling unit 12 moves with respect to the table 14, and discharges the modeling material 100 to the table 14 so as to wrap the modeling material 100 around the pin 30 and fold it back. When the modeling material 100 is wound around the pin 30, the modeling material 100 is folded back at the pin 30 to form the folded-back portion 150. The folded portion 150 forms a curved portion 203 of the U-shaped portion 200.

Then, while the modeling material 100 is being wound around the pin 30, the elevating mechanism 36 moves the pin 30 to a separated position. In other words, the elevating mechanism 36 moves the pin 30 to the separated position after the start of winding the modeling material 100 around the pin 30 and before the completion of the winding of the modeling material 100 around the pin 30.

Further, after the modeling material 100 is deformed from a straight line to a curved line, the elevating mechanism 36 moves the pin 30 to a separated position before being deformed from the curved line to the straight line. More specifically, after the modeling unit 12 switches from the first linear movement to the curved movement, the elevating mechanism 36 moves the pin 30 to the separated position before switching from the curved movement to the second linear movement.

More specifically, the elevating mechanism 36 separates the pin 30 in the range where the bending angle θA in the curved movement of the modeling unit 12 is 45 degrees or more and 135 degrees or less, more preferably 60 degrees or more and 120 degrees or less. Move to position. More preferably, when the bending angle θA in the curved movement of the modeling unit 12 becomes 90 degrees, the elevating mechanism 36 moves the pin 30 to the separated position. That is, at the intermediate value of the bending angle θA in the curved movement of the modeling unit 12, the elevating mechanism 36 moves the pin 30 to the separated position.

In the present embodiment, the modeling material 100 discharged from the discharging section 50 of the modeling unit 12 is sandwiched between the discharged surface 14A of the table 14 and the heating and pressurizing roll 56, so that it is heated and pressed to be smooth. Will be done. Here, when the modeling material 100 having a flat cross section is wound around the pin 30, it is twisted by the pin 30 and the flat plane 100D of the modeling material 100 faces sideways as shown in FIGS. 13 and 17. It becomes a state. Therefore, the modeling material 100 is wound around the pin 30 in a vertically elongated posture, but is heated and pressed by the heating and pressing roll 56 to be smoothed.

When the modeling unit 12 is folded back in an S shape, the modeling material 100 is wound around the pin 31 by using the pin 31 as in the case of the pin 30 after using the pin 30.

Here, in the configuration in which the pin 30 is fixed to the base 14 (hereinafter, this configuration is referred to as a first comparative example), the modeling material 100 cannot move to the position where the pin 30 is arranged, so that it is as shown in FIG. , A gap 150S may occur at the folded portion 150 of the modeling material 100. Further, the gap 150S may not be eliminated even when the folded portion 150 of the modeling material 100 is heated and pressed by the heating and pressing roll 56.

On the other hand, in the present embodiment, the pin 30 moves to a separated position while the modeling material 100 is being wound around the pin 30, so that the position where the pin 30 is arranged (that is, in the folded portion 150). A space is created on the peripheral side), and the modeling material 100 can easily move to the inner peripheral side of the folded-back portion 150 as compared with the first comparative example. Then, by heating and pressurizing with the heating and pressurizing roll 56, the modeling material 100 moves to the position where the pin 30 is arranged (that is, the inner peripheral side of the folded-back portion 150), so that compared with the first comparative example, It is possible to prevent a gap from being generated at the folded portion 150 of the modeling material 100 (see FIG. 16).

Further, in the present embodiment, as shown in FIG. 8, the pins 30 and 31 are formed to be tapered, and the tip portions 30A and 31A contact the ejected surface 14A of the base 14 with the tip portions 30B and 31B. Have.

Here, in a configuration in which the thicknesses of the tips 30B and 31B of the pins 30 and 31 are constant (hereinafter, this configuration is referred to as a second comparative example), between the tips of the pins 30 and 31 and the discharged surface 14A. Since no gap is formed, it is difficult for the modeling material 100 to move to the inner peripheral side of the folded portion.

On the other hand, since it is formed to be tapered, a gap is formed between the tips of the pins 30 and 31 (opposing surfaces 30C and 31C) on the outer periphery of the tip surfaces 30A and 31A. Therefore, as compared with the second comparative example, the modeling material 100 is more likely to move to the inner peripheral side of the folded portion, and it is suppressed that a gap is generated at the folded portion of the modeling material. Further, the curvature of the folded portion 150 of the modeling material 100 is smaller than that of the second comparative example.

Further, as shown in FIG. 8, the pins 30 and 31 are continuous with the tip surfaces 30A and 31A so as to gradually move away from the discharge surface 14A of the base 14 toward the outer peripheral side from the tip surfaces 30A and 31A. It is formed and has facing surfaces 30C and 31C facing the discharged surface 14A of the base 14.

Compared to the configuration in which the facing surfaces 30C and 31C are continuously formed on the tip surfaces 30A and 31A so as to be gradually separated from the discharged surface 14A from the tip surfaces 30A and 31A toward the outer peripheral side, the molding material 100 is folded back. The formation of irregularities on the modeling material 100 that has moved to the gaps between the portions is suppressed.

Further, in the present embodiment, as shown in FIG. 14, the heating and pressurizing roll 56 moves with respect to the discharged surface 14A by a path passing through the outer peripheral side of the pins 30 and 31, and is discharged to the discharged surface 14A. The shaped material 100 is heated and pressed.

Therefore, as compared with the configuration in which the heating and pressurizing roll 56 moves with respect to the discharged surface 14A by a path passing through the inner peripheral side of the outer circumferences of the pins 30 and 31, the heating and pressurizing rolls 56 have the pins 30 and 31 Interference is suppressed. Further, since the heating and pressing roll 56 evenly flattens the fibers, the orientation of the continuous fibers 120 is relaxed and the internal strain is reduced.

Further, in the present embodiment, as shown in FIG. 14, the heating and pressing roll 56 moves with respect to the discharged surface 14A by a path passing from the inner peripheral end 150A of the folded-back portion 150 of the modeling material 100 to the outside. , The modeling material 100 discharged to the discharged surface 14A is heated and pressurized.

Therefore, as compared with the configuration in which the heating / pressurizing roll 56 moves with respect to the discharged surface 14A by a path passing inside the inner peripheral end 150A of the folded-back portion 150 of the modeling material 100, the heating / pressurizing roll 56 has a pin. Interference with 30 and 31 is suppressed.

Further, in the present embodiment, the heating and pressing roll 56 is wider than the width of the modeling material 100 and moves with respect to the discharged surface 14A by a path passing through a position offset to the outer peripheral side of the folded portion 150 of the modeling material 100. Then, the modeling material 100 discharged to the discharged surface 14A is heated and pressurized.

For this reason, the folding portion 150 of the modeling material 100 is compared with the configuration in which the heating and pressurizing roll 56 moves with respect to the discharged surface 14A along a path that passes through uniform positions in the inner and outer peripheral directions of the folding portion 150 of the modeling material 100. Poor heating and pressurization of the outer peripheral side is suppressed.

(Modification example)
In the above embodiment, the elevating mechanism 36 moves the pin 30 to a separated position while the modeling material 100 is being wound around the pin 30 (hereinafter, the operation is referred to as a pin first operation). In addition to the first operation, the pin second operation and the pin third operation may be performed.

The second pin operation is an operation of keeping the pin 30 at the winding position while the modeling material 100 is wound around the pin 30. The third pin operation is an operation of keeping the pin 30 at a separated position.

The operation executed by the modeling unit 12, specifically, the pin first operation, the pin second operation, and the pin third operation are associated with each of the unit first operation, the unit second operation, and the unit third operation. Will be executed. The unit first operation, the unit second operation, and the unit third operation are examples of the first operation, the second operation, and the third operation, respectively.

The first operation of the unit is the operation of the modeling unit 12 that discharges the modeling material 100 to the discharge surface 14A so as to wrap the modeling material 100 around the pin 30 and fold it back at the first angle (see FIG. 12). As an example, the first angle is a bending angle θA in the range of more than 120 degrees and 180 degrees or less.

The second operation of the unit is the operation of the modeling unit 12 that discharges the modeling material 100 to the discharge surface 14A so as to wrap the modeling material 100 around the pin 30 and bend it at a second angle smaller than the first angle ( (See FIG. 11). As an example, the second angle is a bending angle θA in the range of more than 60 degrees and 120 degrees or less.

The third operation of the unit is the operation of the modeling unit 12 that discharges the modeling material 100 to the discharge surface 14A so as to be curved at a third angle smaller than the second angle (see FIG. 10). As an example, the third angle is a bending angle θA in the range of more than 0 degrees and not more than 60 degrees.

Then, in the unit first operation, the pin first operation is executed. In the second unit operation, the second pin operation is executed. In the unit third operation, the pin third operation is executed.

As described above, in the second unit operation, the second pin operation is executed, so that the movement operation of the pin 30 becomes unnecessary in the state where the modeling material 100 is wound. Further, in the third unit operation, the third pin operation is executed, so that the movement operation of the pin 30 becomes unnecessary.

In the above example, the pin first operation, the pin second operation, and the pin third operation are selected from the three operations, but the pin first operation and the pin second operation, or the pin first operation. The configuration may be selected from the two operations of the pin third operation and the pin third operation.

When selected from the two operations of the pin first operation and the pin second operation, the pin first operation and the pin second operation are executed in association with each of the unit first operation and the unit second operation.

In this case, the second angle in the second operation of the unit is, for example, a bending angle θA in the range of more than 0 degrees and 120 degrees or less.

When selected from the two operations of the pin first operation and the pin third operation, the pin first operation and the pin third operation are executed in association with each of the unit first operation and the unit second operation.

In this case, the second angle in the second operation of the unit is, for example, a bending angle θA in the range of more than 0 degrees and 120 degrees or less.

(Other variants)
In the present embodiment, the modeling unit 12 is moved with respect to the base 14, but the present invention is not limited to this. For example, the pedestal 14 may be moved with respect to the modeling unit 12, or the modeling unit 12 may be moved relative to the pedestal 14 by moving at least one of the modeling unit 12 and the pedestal 14. Just do it.

Further, in the present embodiment, the modeling apparatus 10 includes the impregnated portion 24, but the impregnated portion 24 may not be provided. In this case, for example, the fiber bundle 110 may be supplied from the supply unit 21 with the linear modeling material 100 in which the resin 112 is impregnated in advance.

Further, in the present embodiment, as shown in FIG. 8, the pins 30 and 31 are formed to be tapered, and the tip portions 30A and 31A contact the ejected surface 14A of the base 14 with the tip portions 30B and 31B. Had, but not limited to this. For example, the thickness of the tips 30B and 31B of the pins 30 and 31 may be constant.

Further, in the present embodiment, as shown in FIG. 8, the tip surfaces 30A, 31 so as to gradually move away from the discharge surface 14A of the base 14 toward the outer peripheral side from the tip surfaces 30A, 31A. It was formed continuously on 31A and had facing surfaces 30C and 31C facing the discharged surface 14A of the base 14, but the present invention is not limited to this. For example, the facing surfaces 30C and 31C may be continuously formed on the tip surfaces 30A and 31A so as to be gradually separated from the discharged surface 14A from the tip surfaces 30A and 31A toward the outer peripheral side.

The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the gist thereof. For example, the above-mentioned modified examples may be configured by combining a plurality of them as appropriate.

10 Modeling device 12 Modeling unit (an example of discharge mechanism)
14 units (example of discharged part)
Pins 30 and 31 (example of winding part)
36 Lifting mechanism (an example of moving mechanism)
56 Heating and pressurizing roll (an example of heating and pressurizing part)
100 modeling material

Claims (9)

A discharged part where a linear molding material impregnated with resin in a bundle of continuous fibers is discharged,
A winding portion that is arranged in the discharged portion and around which the molding material is wound, and a winding portion.
An discharge mechanism that moves relative to the discharged portion and discharges the shaped material to the discharged portion so as to wrap the molding material around the winding portion and fold back.
A heating and pressurizing part that heats and pressurizes the modeling material discharged to the discharged part,
A moving mechanism that moves the wound portion away from the discharged portion while the molding material is being wound around the wound portion.
A modeling device equipped with. The winding part is
The modeling apparatus according to claim 1, further comprising a tip portion that is tapered and whose tip surface contacts the discharged portion. The winding part is
It is formed continuously on the tip surface so as to gradually move away from the discharged portion from the tip surface toward the outer peripheral side, and has an facing surface facing the discharged portion.
The modeling apparatus according to claim 2. The heating and pressurizing part
The modeling according to any one of claims 1 to 3, which moves relative to the discharged portion along a path passing through the outer peripheral side of the winding portion and heats and pressurizes the modeling material discharged to the discharged portion. apparatus. The heating and pressurizing part
Any one of claims 1 to 3 that moves relative to the discharged portion by a path passing from the inner peripheral end of the folded portion of the shaped material to the outside and heats and pressurizes the shaped material discharged to the discharged portion. The modeling device described in the section. The heating and pressurizing part
Wider than the width of the molding material,
The modeling apparatus according to claim 5, wherein the modeling material moves relative to the discharged portion by a path passing through a position offset to the outer peripheral side of the folded portion of the modeling material, and heats and pressurizes the modeling material discharged to the discharged portion. .. The discharge mechanism
The first operation of discharging the modeling material to the discharged portion so as to wrap the modeling material around the winding portion and fold it back at the first angle.
The second operation of discharging the modeling material to the discharged portion so as to bend at a second angle smaller than the first angle while winding the molding material around the winding portion can be executed.
The moving mechanism
In the first operation, while the molding material is being wound around the winding portion, the winding portion is moved in a direction away from the discharged portion.
In any one of claims 1 to 6, in the second operation, the wound portion is kept at a contact position with the discharged portion while the molding material is wound around the wound portion. The modeling device described. The discharge mechanism
Further, it is possible to execute the third operation of discharging the modeling material to the discharged portion so as to be curved at a third angle smaller than the second angle.
The moving mechanism
The modeling apparatus according to claim 7, wherein in the third operation, the winding portion is retained at a position away from the discharged portion. The discharge mechanism
The first operation of discharging the modeling material to the discharged portion so as to wrap the modeling material around the winding portion and fold it back at the first angle.
The second operation of discharging the modeling material to the discharged portion so as to be curved at a second angle smaller than the first angle can be performed.
The moving mechanism
In the first operation, while the molding material is being wound around the winding portion, the winding portion is moved in a direction away from the discharged portion.
The modeling apparatus according to any one of claims 1 to 6, wherein in the second operation, the winding portion is retained at a position away from the discharged portion.