JP2018089923A - Molding apparatus, shaping control program and molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding apparatus capable of improving efficiency of molding processing in an FDM method.SOLUTION: The molding apparatus includes: a heating unit for heating a molding material 700; an extrusion unit having an extrusion port 100 for extruding the heated molding material 700 to a molding stage 600; a movement unit for moving the molding material 700 with respect to the heating unit and the extrusion unit; a movement state detection unit 200 for detecting a movement state of the molding material 700; and a control unit for controlling the movement direction of the molding material 700 at the moving unit and the heating to the molding material 700 at the heating unit according to the movement state detected by the movement state detection unit 200.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a modeling apparatus, a modeling control program, and a modeling method.

  In recent years, modeling apparatuses used for modeling prototypes and the like are known. There are various types of modeling apparatuses. For example, a modeling method is known in which a resin melted by heat is pushed out from a nozzle onto a modeling stage and stacked, and an object shape is created by the resin deposited on the modeling stage. This modeling method is called a “material extrusion deposition method” or a FDM (Fused Deposition Modeling) method. A shaped article obtained by FDM has characteristics that durability is high and heat resistance is easily obtained.

  In a modeling apparatus using FDM, an apparatus configured to continuously supply a filament as a modeling material to an extrusion head via a guide tube is known (for example, see Patent Document 1).

  As in the technique disclosed in Patent Document 1, a configuration in which a filament is heated and continuously extruded from a nozzle serving as an extrusion port to a modeling stage needs to form a moving path using a tube or the like. In such a configuration, when modeling using a plurality of filaments, in order to change the type of filament, the filament must be reinserted into the tube, and the filament must be moved back to a modeling start point. Since the filament has a small diameter and the tube has a small inner diameter, the operation of inserting the filament into the tube is complicated.

  Further, the filament needs to be heated and melted before being extruded from the nozzle. The optimum heating temperature varies depending on the filament material. Therefore, after confirming the filament material, the optimum heating temperature must be set appropriately by hand. Even if the heating temperature is set to an optimum temperature, it is impossible to determine whether the set temperature is appropriate unless the heated and melted filament is actually pushed out from the nozzle. Therefore, the user cannot confirm the suitability of the heating temperature unless the modeling operation is once tried after setting the heating temperature in accordance with the filament material. In this case, it is necessary to repeat the setting of the heating temperature and the trial of the modeling operation.

  If the heating temperature is inappropriate, the degree of extrusion of the filament from the nozzle is not appropriate, and the filament is loosened or stretched in the tube, making it difficult to maintain a suitable extrusion state.

  Therefore, in a modeling apparatus using a conventional technique such as the technique disclosed in Patent Document 1, an optimal modeling environment must be prepared manually by trial and error of the relationship between the adjustment of the heating temperature and the extrusion state of the filament. In other words, there was a problem in efficiently performing modeling.

  The present invention has been made to solve such a problem, and an object thereof is to improve the efficiency of the modeling process.

  In order to solve the above-described problem, one aspect of the present invention relates to a modeling apparatus, a heating unit that heats a modeling material, and an extrusion unit that includes an extrusion port that extrudes the heated modeling material to a modeling stage; According to the movement state detected in the movement state detection part which moves the modeling material with respect to the heating part and the extrusion part, the movement state detection part which detects the movement state of the modeling material, and the movement state detection part And a control unit that controls the moving direction of the modeling material in the moving unit and the heating of the modeling material in the heating unit.

  According to the present invention, the efficiency of the modeling process can be improved.

It is a general view which shows the example of the whole structure in embodiment of the modeling apparatus which concerns on this invention. It is the schematic which shows the structure of the head part which concerns on this embodiment. It is the schematic which shows the example of arrangement | positioning of the sensor which concerns on this embodiment. It is the schematic which shows the example of arrangement | positioning of the motor which concerns on this embodiment. It is a block diagram which shows the hardware constitutions of the control system which concerns on this embodiment. It is a functional block diagram which shows the function structure of the modeling control program which concerns on this invention. It is a flowchart explaining an example of operation | movement of the modeling apparatus and modeling program which concern on this invention. It is a flowchart explaining the operation | movement which concerns on this embodiment in detail. It is a flowchart explaining the operation | movement which concerns on this embodiment in detail. It is a flowchart explaining the operation | movement which concerns on this embodiment in detail.

  Hereinafter, an embodiment of a modeling apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an overall configuration of an FDM (FDM: Fused Deposition Modeling) apparatus 1 according to the present embodiment. As shown in FIG. 1, the FDM apparatus 1 includes a head 100, a sensor 200, a motor 300, a tube 400, a filament reel 500, and a modeling stage 600.

  The head 100 heats and melts the filament 700 that is a modeling material, and pushes it toward the modeling stage 600. The head 100 includes an extrusion port through which the melted filament 700 is extruded. That is, the head 100 constitutes an extrusion unit. The head 100 includes a horizontal drive mechanism for moving the head 100 in two horizontal directions. The operation of the horizontal drive mechanism is controlled by a control unit described later. The filament 700 pushed out from the head 100 is deposited on the modeling stage 600 constituting the modeling unit. A shaped object is formed when the filament 700 deposited on the modeling stage 600 is solidified.

  The sensor 200 constitutes a movement state detection unit that detects the movement state of the filament 700. Here, the “moving state” includes a bending state of the filament 700 due to the position of the filament 700 in the internal space of the tube 400 constituting the moving path of the filament 700, the magnitude of the external force applied to the filament 700, and the like. For example, the sensor 200 detects that “sagging” or “stretching” has occurred in the filament 700 in the internal space of the tube 400.

  The motor 300 is a moving unit for moving the filament 700 inserted through the tube 400 in the direction of the head 100. The relationship between the motor 300 and the filament 700 will be described later.

  The tube 400 constitutes a movement path that connects the filament reel 500 and the head 100. The tube 400 is a tubular member through which the filament 700 can be inserted into the internal space, and is made of a flexible member.

  The filament reel 500 constitutes a modeling member supply unit that holds the filament 700 so that the filament 700 can be continuously moved to the head 100. The filament reel 500 is a member wound so that the filament 700 can be continuously supplied, and is held on the wall surface of the FDM apparatus 1.

  The modeling stage 600 deposits the filament 700 heated and melted in the head 100. The modeling stage 600 includes a vertical drive mechanism that drives in the vertical direction so that the distance from the extrusion opening of the filament 700 in the head 100 can be changed. The operation of the modeling stage 600 is controlled by a control unit described later. By driving the horizontal drive mechanism of the head 100 and the vertical drive mechanism of the modeling stage 600 in cooperation, the filament 700 can be three-dimensionally deposited and modeled on the modeling stage 600.

  The FDM apparatus 1 determines whether or not the extruded state of the filament 700 in the head 100 is normal based on the moving state of the filament 700 inside the tube 400. Therefore, the sensor 200 is provided in the middle of the movement path of the filament 700. Further, the FDM apparatus 1 automatically adjusts the heating of the filament 700 in the head 100 and the moving state of the filament 700 in the tube 400 to an optimal state in accordance with the detection of the sensor 200. (See FIG. 5).

[Configuration of Head 100]
Next, the configuration of the head 100 according to the present embodiment will be described with reference to FIG. The head 100 forms a part of a moving path by forming a nozzle 101 that is an extrusion port of the filament 700, a heater 102 that constitutes a heating unit that melts the filament 700, a cooler 103, and a tube 400 and the head 100. And a joint 104 which is a joint portion.

  The distance between the nozzle 101 and the heater 102 is about 10 mm, and the filament 700 heated and melted in the heater 102 is pushed out of the nozzle 101 and deposited on the modeling stage (see FIG. 1).

  The heater 102 is an electric heater that heats the joint 104 from the outer wall of the joint 104 through which the filament 700 is inserted, and heats the filament 700 inside the joint 104 by the heat transfer. Heating from the heater 102 softens the filament 700 and makes it easier to model.

  The cooler 103 is a cooling mechanism that cools the filament 700 in order to maintain the “hardness” of the unheated portion when the filament 700 heated by the heater 102 and softened is pushed in the direction of the nozzle 101. . If the filament 700 is not cooled by the cooler 103, the filament inside the joint 104 becomes soft as a whole, and the pushing force from the nozzle 101 becomes difficult to be applied.

  The joint 104 is a metallic tubular member, and forms a movement path for extruding the filament 700 moved by the tube 400 from the nozzle 101. In addition, the joint 104 includes the cooler 103 described above on the outer wall, and maintains the filament 700 so as to maintain a certain hardness. Further, the joint 104 includes a heater 102 on the outer wall closer to the nozzle 101 than the cooler 103. The nozzle 101 is provided at the tip of the joint 104.

[Configuration of Sensor 200]
Next, the sensor 200 according to the present embodiment will be described with reference to FIG. The sensor 200 includes a first sensor 210 and a second sensor 220. For example, the first sensor 210 is a slack sensor and the second sensor 220 is a tension sensor.

  First, the moving state of the filament 700 will be described. Ideally, the position of the filament 700 in the internal space of the tube 400 that is the movement path is near the center of the internal space. In this state, the extrusion state of the filament 700 from the nozzle 101 is also stable. However, in actuality, the position of the filament 700 in the internal space of the tube 400 is displaced according to the heating temperature of the filament 700 by the heater 102 and the moving speed of the filament 700 by the motor 300. For example, when the temperature of the heater 102 is low, the extrusion speed from the nozzle 101 becomes slower than the movement speed. In this case, the filament 700 is loosened in the internal space of the tube 400. On the other hand, when the temperature of the heater 102 is high and the extrusion speed starts to be higher than the moving speed, the filament 700 is stretched in the internal space of the tube 400. Further, when the filament 700 is reversed when the temperature of the heater 102 is low, the filament 700 is caught in the nozzle 101. That is, the filament 700 is in a stretched state.

  Such slack or tension occurs when the temperature of the filament 700 in the heater 102 is not optimal and the heating of the filament 700 is not optimally set. If the heating setting is inappropriate, the filament temperature becomes inappropriate, the filament 700 is too hard or too soft, the drive control timing for the head 100 and the modeling stage 600, and the deposition timing of the filament 700 on the modeling stage 600. Disagreement. That is, when the filament 700 is slack or stretched, the filament 700 cannot be pushed out from the nozzle 101 toward the modeling stage 600, and a predetermined modeling operation is not performed.

  When the filament 700 is slack or stretched, the position of the filament 700 in the inner space of the tube 400 is shifted from the vicinity of the center to the inner wall surface, and the filament 700 is pressed against the inner wall of the tube 400. Further, the direction in which the filament 700 is displaced differs depending on the slack and tension. Therefore, the sensor 200 according to this embodiment includes a first sensor 210 that functions as a slack sensor and a second sensor 220 that functions as a tension sensor.

  The first sensor 210 and the second sensor 220 are, for example, photointerrupters, and a light emitting portion and a light receiving portion are arranged at positions opposite to the diameter of the tube 400 on the outer periphery of the tube 400. The photo interrupter can detect whether or not the filament 700 as an object exists between the light emitting unit and the light receiving unit by detecting whether or not the light receiving unit can receive the light emitted from the light emitting unit. it can. For example, what is necessary is just to attach to the tube 400 so that the state from which the light from a light emission part is interrupted with the filament 700 can be detected as normal.

  For example, in the first sensor 210, when the light from the light emitting unit is not detected by the light receiving unit, the first sensor 210 is arranged in the tube 400 so that the moving state of the filament 700 is “slack”. That is, the first sensor 210 is used as a slack sensor. On the other hand, in the second sensor 220, when the light from the light emitting unit is not detected in the light receiving unit, the second sensor 220 is arranged on the tube 400 so that the moving state of the filament 700 is “stretching”. That is, the second sensor 220 is used as a tension sensor.

  In FIG. 3, the second sensor 220 and the first sensor 210 are arranged in order from the side close to the head 100. In addition, arrangement | positioning of the 1st sensor 210 and the 2nd sensor 220 is not restricted to this, You may arrange | position the 1st sensor 210 and the 2nd sensor 220 in the reverse order of the order illustrated in FIG. A plurality of first sensors 210 and second sensors 220 may be provided. In addition to using a photo interrupter as the sensor 200, a capacitance sensor that detects a capacitance that changes according to the distance between the filament 700 and the inner wall of the tube 400 may be used.

  In addition, the sensor 200 is not limited to a specific type or method, and may be any sensor that can detect the moving state of the filament 700 in the inner space of the tube 400 as described above.

[Configuration of Motor 300]
Next, the motor 300 according to the present embodiment will be described with reference to FIG. The motor 300 is, for example, an electric motor, and is configured by attaching a gear 301 to a shaft portion 302. The shaft portion 302 rotates in a predetermined direction by connecting a power source to the electric motor. A hole is formed in a part of the tube 400, and the gear 301 is held in a state of entering the internal space of the tube 400 from this hole. The gear 301 rotates based on the rotation of the shaft portion 302. The gear 301 is a rotating member that is in contact with the outer wall of the filament 700, and its tooth tip directly contacts the peripheral surface of the filament 700.

  As shown in FIG. 4, when the shaft portion 302 of the motor 300 rotates and the gear 301 rotates, the tooth tip of the gear 301 pushes the outer wall of the filament 700, whereby the entire filament 700 is moved in the direction of arrow A. Move to be pushed out. Since the filament 700 moves in a direction corresponding to the rotation direction of the shaft portion 302 of the motor 300, the filament 700 moves in the reverse direction of the arrow A when the shaft portion 302 is rotated in the reverse direction. That is, by controlling the rotation direction of the motor 300, the moving direction of the filament 700 can be controlled.

  As shown in FIG. 1, in the FDM apparatus 1 according to the present embodiment, the motor 300 moves inside the tube 400 and the delivery motor, which is a first motor for sending the filament 700 from the filament reel 500. And a moving motor that is a second motor.

[Description of Filament 700]
The filament 700 used as a modeling material is mainly made of resin. For example, ABS resin, PC (polycarbonate), PC / ABS, PPSU (polyphenylsulfone), PLA (polylactic acid), and the like.

[Configuration of Control Unit 110]
Next, a hardware configuration of the control unit 110 that controls the overall operation of the FDM 1 according to the present embodiment will be described. As shown in FIG. 6, the control unit 110 according to the present embodiment includes a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, and an XY drive I / F (InterFace) 114. , Z drive I / F 115, sensor I / F 116, heater I / F 117, and motor I / F 118 are connected via a bus 119.

  The XY drive I / F 114 is connected to an XY drive mechanism that drives the head 100 in two horizontal directions, the X direction and the Y direction. A Z drive mechanism that drives the modeling stage 600 in the vertical direction is connected to the Z drive I / F 115. A first sensor 210 and a second sensor 220 are connected to the sensor I / F 116. A heater 102 is connected to the heater I / F 117. A motor 300 is connected to the motor I / F 118.

  The CPU 111 is a calculation unit and controls the operation of the entire FDM 1. The ROM 112 is a read-only nonvolatile storage medium, and stores a modeling control program, firmware, and the like which will be described later. The RAM 113 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 111 processes information.

  The XY drive I / F 114 outputs, to the horizontal drive unit of the head 100, a horizontal control signal that is a control signal generated by the CPU 111 in accordance with the result of the arithmetic processing and controls the drive of the head 100 in two horizontal directions. . The Z drive I / F 115 is a control signal generated by the CPU 111 according to the result of the arithmetic processing and outputs a vertical control signal for controlling the vertical drive of the modeling stage 600 to the vertical driving unit of the modeling stage. .

  The sensor I / F 116 acquires detection signals from the first sensor 210 and the second sensor 220 and notifies the CPU 111 of them. Based on the detection signal acquired via the sensor I / F 116, the CPU 111 executes a calculation process, and detects the moving state of the filament 700 according to the result of the calculation process.

  The heater I / F 117 outputs a temperature setting signal output according to the result of the arithmetic processing in the CPU 111 to the heater 102, and detects the setting of the temperature at which the heater 102 heats the filament 700 to the CPU 111. The temperature measurement signal is notified. That is, the heating temperature of the heater 102 is controlled by the arithmetic processing of the CPU 111.

  The motor I / F 118 outputs, to the motor 300, a rotational drive signal that is a control signal generated by the CPU 111 according to the result of the arithmetic processing and controls the operation of moving the filament 700 toward the nozzle 101. The rotation drive signal is a signal that sets the rotation speed and rotation direction of the motor 300. That is, the rotation speed and the rotation direction of the motor 300 are controlled by the calculation processing of the CPU 111.

  In the hardware configuration described above, the software control unit is configured by the CPU 111 executing arithmetic processing according to the modeling control program stored in the ROM 112. A functional block that realizes the function of the FDM 1 according to the present embodiment is configured by a combination of the software control unit configured as described above and hardware.

[Functional configuration of FDM1]
Next, a functional configuration realized in the modeling control program according to the present invention will be described. FIG. 6 is a functional block diagram showing the configuration of the control program 10 according to the present embodiment. As shown in FIG. 6, the control program 10 includes a movement control unit 11, a movement state determination unit 12, a heating control unit 13, an XY drive control unit 14, and a Z drive control unit 15.

  The movement control unit 11 controls the rotation speed and rotation direction of the motor 300 via the motor I / F 118. As a result, the extruded state of the filament 700 varies. Further, the movement control unit 11 generates a control signal for each of the horizontal driving of the head 100 and the vertical driving of the modeling stage 600 in accordance with the extruded state of the filament 700. The movement control unit 11 generates a control signal for controlling the operation of the motor 300 based on the notification from the movement state determination unit 12 and the set temperature from the heating control unit 13.

  Based on the detection signal acquired from the sensor 200 via the sensor I / F 116, the movement state determination unit 12 determines whether the movement state of the filament 700 is “slack”, “stretch”, or “normal”. Determine. The determined result is notified to the movement control unit 11 and the heating control unit 13.

  The heating control unit 13 controls the setting of the heating temperature of the heater 102 according to the movement control in the movement control unit 11. In addition, the heating control unit 13 notifies the movement control unit 11 of the setting of the temperature of the heater 102.

  The XY drive control unit 14 outputs a horizontal control signal to the horizontal drive unit of the head 100 via the XY drive I / F 114 based on the horizontal control signal generated by the movement control unit 11.

  The Z drive control unit 15 outputs a vertical control signal to the vertical drive unit of the modeling stage 600 via the Z drive I / F 115 based on the vertical control signal generated by the movement control unit 11.

  According to the control program 10 according to the present embodiment having the above configuration, the movement control unit 11 adjusts the rotation speed of the motor 300 according to the movement state of the filament 700 detected by the movement state determination unit 12. Further, the heating control unit 13 adjusts the setting of the heating temperature of the heater 102 according to the moving state of the filament 700. The moving state of the filament 700 can be automatically adjusted by adjusting the rotation speed of the motor 300 and the heating temperature of the heater 102. Thereby, even if the material of the filament 700 is changed, complicated setting work can be reduced, and the efficiency of the modeling process can be improved.

[Flow of processing in modeling method]
Next, an embodiment of a modeling method according to the present invention will be described. First, an initial setting process for increasing the temperature of the heater 102 to a predetermined set temperature is executed (S701). Details of S701 will be described later. Next, an initial state determination process is performed to determine whether or not slack occurs when the filament 700 is moved at the temperature set in S701 (S702). Details of the processing of S702 will be described later. Next, in S702, if the slack in the initial state does not occur, fine adjustment processing is performed to make the moving state when the filament 700 is moved to the nozzle 101 normal (S703). Details of the processing of S703 will be described later.

<Initial setting processing>
Next, details of the initial setting process in S701 will be described with reference to the flowchart of FIG. When the filament reel 500 is set in the FDM 1 and the operation is started, the heating control of the heater 102 is started by the heating control unit 13 (S801). The set temperature of the heater 102 is designated in advance, and the heating process is continued until the temperature of the heater 102 reaches the set temperature (SS802 / NO).

  If the temperature of the heater 102 reaches the set temperature (S802 / YES), the initial setting process ends.

<< Initial state judgment process >>
Next, details of the initial state determination processing in S702 will be described using the flowchart of FIG. In a state where the heater 102 has reached a set temperature (for example, 150 ° C.), the movement control unit 11 controls the driving of the motor 300 to execute the first movement process for moving the filament 700 to the position of the heater 102 ( S901).

  Subsequently, based on the detection signal from the sensor 200, the moving state determination unit 12 executes a slack detection process for determining whether the filament 700 is slack (S902). If no slack is detected in the filament 700 in S902 (S902 / NO), the initial state determination process ends.

  In S902, if slack is detected in the filament 700 (S902 / YES), the heating control unit 13 executes a heater temperature increasing process for increasing the temperature of the heater 102 (S903). In S903, the temperature setting of the heater 102 is increased by about 5 ° C., for example.

  Subsequent to S903, in S904, a filament winding process is executed (S904). In step S <b> 904, the movement control unit 11 moves the filament 700 from the position of the nozzle 101 to the position of the heater 102 by operating the motor 300 in the direction opposite to the first movement process (S <b> 901). As a result, the filament 700 can be further heated, and slack can be eliminated. Subsequent to S904, the process returns to S902, and based on the detection signal from the sensor 200, the movement state determination unit 12 performs a slack detection process (S902).

  In S902, the process of detecting the moving state of the filament 700 is repeated while increasing the temperature of the heater 102 until the slack of the filament 700 is not detected. As described above, the initial state determination process is executed.

《Fine adjustment processing》
Next, details of the fine adjustment processing in S703 will be described using the flowchart of FIG. In a state where the slack of the filament 700 is eliminated in the initial setting, the movement control unit 11 controls the driving of the motor 300 to execute a second movement process for moving the filament 700 from the heater 102 to the position of the nozzle 101 (S1001). ).

  Subsequently, based on the detection signal from the sensor 200, the moving state determination unit 12 executes a slack detection process for determining whether slack has occurred in the filament 700 (S1002). In S1002, when slack is detected in the filament 700 (S1002 / YES), the heating control unit 13 executes a heater temperature increasing process for increasing the temperature of the heater 102 (S1007). In S1007, the temperature setting of the heater 102 is increased by about 1 ° C., for example, and then the process returns to S1001. In the heater temperature rise process (S1007) in the fine adjustment process (S703), the temperature setting of the heater 102 is finely controlled by making the degree of temperature setting rise smaller than the heater temperature rise process (S903) in the initial setting determination process. .

  If no slack is detected in the filament 700 in S1002 (S1002 / NO), the movement control unit 11 executes a filament winding process (S1003). In S1003, the movement control unit 11 operates the motor 300 in the direction opposite to the second movement process (S1001) to rewind the filament 700 from the position of the nozzle 101 to the position of the heater 102.

  Subsequent to S1003, based on the detection signal from the sensor 200, the moving state determination unit 12 executes a tension detection process for determining whether or not the filament 700 is stretched (S1004). In S1004, when a tension is detected in the filament 700 (S1004 / YES), the heating controller 13 executes a heater temperature increasing process for increasing the temperature of the heater 102 (S1007). In S1007, the temperature setting of the heater 102 is increased by about 1 ° C., for example, and then the process returns to S1001. As described above, when a tension is generated in the moving state of the filament 700, the tension can be eliminated by slightly raising the temperature of the heater 102 and increasing the degree of heating of the filament 700.

  If no tension is detected in the filament 700 in S1004 (S1004 / NO), the moving state of the filament 700 is in the “normal state”. That is, the temperature of the heater 102 is in an optimum state. Therefore, the movement state determination unit 12 executes a variable addition process for managing the temperature setting effective count (S1005), and determines that the temperature setting effective count after the addition exceeds a predetermined threshold (S1006). ). By detecting that the temperature setting of the heater 102 is normal and stable by S1006 a plurality of times, it is determined that the moving state is the “normal state”. The threshold value here is, for example, “100”.

  In S1006, until the temperature setting effective count exceeds the threshold value “100” (S1006 / NO), in the slack detection process (S1002) and the tension detection process (S1004), it is confirmed that the moving state of the filament 700 is normal. Judge repeatedly. When the temperature setting effective count exceeds the threshold value (S1006 / YES), the process ends.

[Effect of this embodiment]
According to this embodiment described above, after setting the filament 700 that is a modeling material, it is possible to automatically perform the setting process until the modeling process can be started. According to the modeling method according to the present embodiment, when the filament 700 is set, the movement process divided into two stages and the temperature setting associated therewith can be adjusted. Thus, conventionally, it is possible to save the user from repeating the temperature setting of the heater 102 and the trial of modeling according to the material of the filament 700. Thereby, the efficiency of the modeling process using the FDM apparatus 1 can be improved.

  In the present embodiment, the movement operation is performed in two stages in “filament load” until the filament 700 is inserted into the heater 102 which is a modeling start possible point and is in a state where the filament 700 can move normally. In the first movement stage, the slack in the previous stage of the filament load is eliminated, and then in the second movement stage, the slack and tension in the filament load are eliminated. As described above, by providing a plurality of moving stages and changing the adjustment range of the set temperature of the heater 102 in each stage, the filament loading can be executed more quickly.

DESCRIPTION OF SYMBOLS 1 FDM apparatus 10 Control program 11 Movement control part 12 Movement state determination part 13 Heating control part 14 XY drive control part 15 Z drive control part 70 Control means 100 Head 101 Nozzle 102 Heater 103 Cooler 104 Joint 110 Control part 111 CPU
112 ROM
113 RAM
114 XY drive I / F
115 Z drive I / F
116 Sensor I / F
117 Heater I / F
118 Motor I / F
119 Bus 200 Sensor 210 First sensor 220 Second sensor 300 Motor 301 Gear 302 Shaft part 400 Tube 500 Filament reel 600 Modeling stage 700 Filament

Special table 2011-511719 gazette

Claims (14)

A heating unit for heating the modeling material;
An extrusion unit comprising an extrusion port for extruding the heated modeling material to a modeling stage;
A moving unit that moves the modeling material relative to the heating unit and the extruding unit;
A moving state detector for detecting the moving state of the modeling material;
In accordance with the movement state detected in the movement state detection unit, a control unit that controls the movement direction of the modeling material in the movement unit and heating of the modeling material in the heating unit,
A modeling apparatus comprising: A tubular member that forms a movement path for moving the modeling material to the extruding unit, and holds the modeling material inserted;
The modeling apparatus according to claim 1, comprising: The moving unit is an electric motor including a rotating member that contacts an outer wall of the modeling material, and moves the modeling material according to a rotation direction of the rotating member.
The modeling apparatus according to claim 1 or 2, characterized in that The heating unit is an electric heater,
The modeling apparatus according to any one of claims 1 to 3, wherein: The movement state detection unit
A slack sensor for detecting slackness of the modeling material in the middle of movement with respect to the extruding part;
A tension sensor that detects the tension of the modeling material in the middle of the movement with respect to the extruding part,
The modeling apparatus as described in any one of Claims 1 thru | or 4 comprised from these. The slack sensor and the tension sensor are photointerrupters that detect the position of the modeling material in the middle of movement with respect to the pushing portion.
The modeling apparatus as described in any one of Claims 1 thru | or 5 characterized by the above-mentioned. The control unit controls the movement of the modeling material in the moving unit in two stages,
In the first movement stage, the tip portion of the modeling material is moved to the heating unit,
In the second movement stage, the tip portion of the modeling material is moved to the extrusion port.
The modeling apparatus according to any one of claims 1 to 6, wherein: The control unit increases the temperature of the heating unit when the moving state of the modeling material is in a slack state in the first moving stage.
The modeling apparatus according to claim 7. The controller raises the temperature of the heating unit and moves the tip of the modeling material from the extrusion port to the heating unit when the moving state of the modeling material is a slack state in the first movement stage. Operating the moving part to
The modeling apparatus according to claim 7. The control unit increases the temperature of the heating unit when the moving state of the modeling material is a slack state in the second moving stage,
The modeling apparatus according to any one of claims 7 to 9, wherein The control unit operates the moving unit to move the tip of the modeling material from the extrusion port to the heating unit when the moving state in the second moving stage is not a slack state,
When the moving state when the tip of the modeling material moves from the extrusion port to the heating unit is a stretched state, the temperature of the heating unit is increased.
The modeling apparatus according to any one of claims 7 to 9, wherein The control unit ends the second movement stage when the movement state detection unit detects that the movement state of the modeling material in the second movement stage is neither a slack state nor a tension state a plurality of times. To
The modeling apparatus according to any one of claims 7 to 9, wherein A heating unit that heats the modeling material, an extrusion unit that includes an extrusion port for extruding the heated modeling material to the modeling stage, a moving unit that moves the modeling material relative to the heating unit, and a moving state of the modeling material A movement state detection unit to detect, and a control unit that controls the movement direction of the modeling material in the movement unit and heating of the modeling material in the heating unit according to the movement state detected in the movement state detection unit In a modeling apparatus comprising:
Heating the modeling material in the heating unit;
Extruding the heated modeling material toward the modeling stage;
A movement state detection step of detecting a movement state of the modeling material during movement until the modeling material is pushed out of the modeling stage;
In accordance with the detected movement state, a control step for controlling the moving direction of the modeling material in the moving unit and the heating of the modeling material in the heating unit;
A modeling control program characterized in that A heating unit that heats the modeling material, an extrusion unit that includes an extrusion port for extruding the heated modeling material to the modeling stage, a moving unit that moves the modeling material relative to the heating unit and the extrusion unit, and the modeling material According to the moving state detection unit that detects the moving state of the moving member and the moving state detected by the moving state detector, the moving direction of the modeling material in the moving unit and the heating of the modeling material in the heating unit A control method for controlling, and a modeling method using a modeling device comprising:
Heating the modeling material,
In order to extrude the heated modeling material to the modeling stage, the modeling material is moved relative to the heating unit and the extrusion unit,
Detecting the moving state of the modeling material,
According to the detected movement state, the heating direction of the modeling material and the heating of the modeling material in the heating unit are controlled.
A modeling method characterized by this.