TWI656014B - 3d printing apparatus and printing head with material-circulation assembly - Google Patents

Abstract

A laminated manufacturing device with a stirring function, comprising: a main body and a printing head movably mounted on the main body. The print head comprises a row of print head bodies and an eccentric rotary assembly, the print head body defining an inlet opening, a discharge opening and a rotating space, the rotating space communicating with the inlet opening and the discharging opening, A molding material enters the rotating space from the inlet port, and the eccentric rotating assembly is eccentrically disposed in the rotating space to press the molding material from the inlet port to the rotating body when the head body is rotated relative to the printing head body The discharge port.

Description

Rotary conveying type laminated manufacturing equipment and printing head thereof

The present invention relates to a laminated manufacturing apparatus and a printing head thereof, and more particularly to a rotary conveying type laminated manufacturing apparatus and a printing head thereof.

3D printing, also known as additive manufacturing, additive manufacturing (AM), related to the previous case, for example, Taiwan Patent Publication No. M509118 "3D printing machine automatic printing platform replacement platform". 3D printing is a kind of rapid prototyping technology. It is a technology that directly manufactures 3D solids based on digital model files. The 3D printing types mainly include: Selective Laser Sintering (SLS), Selective Laser Melting (SLM), and Fused Deposition Modeling (FDM).

The fused deposition type feeding device, for example, the three-dimensional printing supply device and the variable orifice device of the Republic of China Invention Patent Publication No. I602765, mainly feeds linear plastic through the clamping wheel of the feeding device. The linear plastic and the discharge are then melted to form a laminate manufacturing process.

However, during the feeding process, the linear plastic is easily bent and deformed, and is easily entangled and the like, which often causes process interruption and delays in man-hours. On the other hand, in general, the fused deposition type feeding device has a power source disposed on the printing head, resulting in a heavier overall weight of the printing head, and an amplification error caused by inertia of the printing head and a power source. The operation also produces vibration, which easily affects the stability of the print head on the discharge.

Accordingly, the present inventors have proposed a print head of a laminate manufacturing apparatus for outputting a molding material for improving the practicality of a print head manufactured by a laminate, comprising: a row of print head bodies and an eccentric rotation assembly. The printing head body defines an inlet opening, a discharging opening and a rotating space, and the rotating space communicates with the inlet opening and the discharging opening, so that the molding material enters the rotating space from the inlet opening, The swivel space has a center of rotation and a wall surrounding the center of the revolution. The eccentric swivel assembly includes a pivot shaft and a swivel member, the pivot shaft is offset from a center of rotation of the swivel space, and the swivel member is movably coupled to the pivot shaft to cause the swivel member to follow the pivot shaft when the pivot shaft rotates Rotating, and the rotating member is pushed by the wall to be displaced in a radial direction relative to the pivot, and the molding material is sent to the discharge port.

The invention also relates to a print head of a multi-layer manufacturing apparatus for outputting a molding material, comprising: a row of print head bodies and an eccentric rotation assembly. The print head body defines a feed opening, a discharge opening and a rotary space, and the rotary space communicates with the inlet opening and the discharge opening for the molding material to enter the rotating space from the inlet. The eccentric rotating assembly is eccentrically disposed in the rotating space to press the molding material from the inlet port to the discharge port when rotating relative to the head body.

The invention also relates to a laminated manufacturing device with a stirring function, comprising: a main body and a printing head movably mounted on the main body. The print head comprises a row of print head bodies and an eccentric rotary assembly, the print head body defining an inlet opening, a discharge opening and a rotating space, the rotating space communicating with the inlet opening and the discharging opening, A molding material enters the rotating space from the inlet, the rotating space has a rotating center and a wall surrounding the rotating center, and the eccentric rotating assembly comprises a pivot and a rotating member, the pivot is offset from the rotating space a rotary center, the rotary member is movably coupled to the pivot to rotate the rotary member with the pivot when the pivot is rotated, and the rotary member is pushed by the wall to be displaced radially relative to the pivot The molding material is sent to the discharge port.

Further, the pivot has a sliding slot extending along the radial direction, and the rotating member is slidably disposed on the sliding slot.

Further, one of the rotating members has a width greater than a diameter of the inlet and the outlet.

Further, the slewing space includes a first side and a second side opposite to each other, the inlet opening is located adjacent to the first side, and the discharge opening is located adjacent to the second side.

Further, the pivot is located adjacent to the discharge opening.

Further, the eccentric rotating assembly further includes a flexible shaft and a motor, the motor is not disposed on the print head body, and one of the motors is pivotally connected to one end of the flexible shaft, and the other end of the flexible shaft is connected to the pivot shaft .

Further, the main body includes a fixing base, and the eccentric rotating component further includes a flexible shaft and a motor, the motor is disposed on the fixing base, and one of the motors is pivotally connected to one end of the flexible shaft, and the flexible shaft is The other end is connected to the pivot.

According to the above technical features, the following effects can be achieved:

1. Rotary discharge can be used to feed the granular molding material, so as to avoid the problem that the wire feeding in the past is easy to cause the material to be interrupted.

2. The eccentric rotation mechanism can provide a large feed pressure.

3. The sliding member can be used to displace the rotating member in the radial direction, and the structure is simple and easy to implement.

4. The width of the rotating part is larger than the inlet and outlet, so as not to leave the rotating space.

5. Since the power source can transmit power to the rotary part of the print head by the flexible transmission member, it does not need to be disposed on the print head body to reduce the overall weight of the print head and avoid direct operation of the power source. Affect the stability of the print head.

(1) ‧‧‧ main body

(11) ‧ ‧ fixed seat

(12) ‧‧‧Printing platform

(13)‧‧‧Automatic displacement module

(131)‧‧‧Linear motor

(132)‧‧‧Guide bars

(2) (2A) (2B) ‧ ‧ print head

(21)(21A)(21B)‧‧‧Print head body

(211) (211B) ‧‧‧ Inlet

(212) (212B) ‧‧‧Outlet

(213) (213B) ‧‧‧ Swiveling space

(2131)‧‧‧Slewing Center

(2132) ‧ ‧ wall

(2133) ‧‧‧ first side

(2134) ‧‧‧ second side

(22)(22A)(22B)‧‧‧Eccentric rotary assembly

(220) (220A) ‧ ‧ pivot

(220B) ‧‧‧

(2201)‧‧‧Chute

(2202B)‧‧‧Installation slot

(2203B) ‧ ‧ missing slot

(221) (221A) (221B) ‧ ‧ rotating parts

(2211B) ‧‧‧ pivot end

(2212B) ‧‧‧Pushing end

(2213B) ‧‧‧ activities lining

(222) (222A) ‧‧‧ Power Source

(223)‧‧‧Soft shaft

(23)‧‧‧ heating module

(200B) ‧ ‧ joint

(201B) ‧ ‧ first pivot

(202B)‧‧‧Second pivot

(A)‧‧‧ molding materials

(D1)‧‧‧Width

(D2) (D3) ‧ ‧ path width

[First figure] is a schematic perspective view of an embodiment of the present invention.

[Second figure] is a block diagram of a system according to an embodiment of the present invention.

[Third Figure] is a schematic cross-sectional view showing an embodiment of the present invention.

[Fourth figure] is a plan cross-sectional view and a partial enlarged schematic view of the embodiment of the present invention.

[Fifth Figure] is a plan cross-sectional view and a partial enlarged view of the embodiment of the present invention.

[Sixth Drawing] is a schematic view of the plane and use of the embodiment of the present invention.

[Seventh figure] is a plan view and a second schematic diagram of the embodiment of the present invention.

[Eighth image] is a schematic perspective view of another embodiment of the present invention.

[Ninth aspect] is a perspective view of a stereoscopic appearance of still another embodiment of the present invention.

[10th] is a perspective exploded view of still another embodiment of the present invention.

[11th A] is a schematic diagram 1 of a planar operation according to still another embodiment of the present invention.

[11th B] is a schematic diagram 2 of a planar operation according to still another embodiment of the present invention.

In summary of the above technical features, the main effects of the rotary feed type laminate manufacturing apparatus and the print head of the present invention will be apparent from the following examples.

Referring to the first and second figures, a laminated manufacturing apparatus with a stirring function according to an embodiment of the present invention is disclosed, comprising: a main body (1) and a printing head movably mounted on the main body (1) (2). The main body (1) comprises a fixing base (11) and a printing platform (12), and the printing platform (12) is movableably displaceable on the Z axis with respect to the fixing base (11). The print head (2) comprises a row of print head body (21) and an eccentric rotary assembly (22). The eccentric rotary assembly (22) comprises a pivot (220), a rotating member (221), and a power source. (222), the rotating member (221) is movably coupled to the pivot (220). In the embodiment, the power source (222) is connected to the pivot (220) by a flexible shaft (223). The power source (222) may be disposed not on the print head body (21) but on the fixed seat (11). The flexible shaft (223) has flexible and retractable characteristics, for example, a plurality of layers of metal. A coil or a spring-like spiral coil wound continuously. The print head body (21) has an X-axis displacement amount and a Y-axis displacement amount in a plane with respect to the fixing base (11). However, the main purpose is not to limit the relative displacement of the printing platform (12) and the print head body (21) to the relative displacements of the X-axis, the Y-axis and the Z-axis. Alternatively, the automatic displacement module (13) can be used to control the automatic displacement of the printing platform (12) and the printing head body (21) by an automatic displacement module (13), and the automatic displacement module (13) can be A plurality of linear motors (131) and a plurality of guide rods (132) (for example, rods such as screws) are included, and a linear controller (131) is controlled by the controller to move along the guide rods (132), but To this end, it can also be a partial or full manual displacement method. Since the automatic displacement module (13) is not the focus of the present invention and is generally known in the art, it will not be described in detail for the sake of brevity.

Continuing to refer to the third and fourth figures, the print head body (21) defines a feed port (211), a discharge port (212), and a swivel space (213). The swivel space (213) is connected. The feed port (211) and the discharge port (212) are supplied to the molding material (A) in a granular form (explained in the form of chips, granules, powder, etc.) from the inlet port (211). The space (213) has a center of rotation (2131) and a wall (2132) surrounding the center (2131) and is substantially a circular groove. In this embodiment, the rotating space (213) includes a first side (2133) and a second side (2134) opposite to each other, and the inlet (211) is located adjacent to the first side (2133) The discharge port (212) is located adjacent to the second side (2134), but the inlet port (211) and the discharge port (212) may also be located on the same side, and the print head body (21) A heating module (23) is disposed at the discharge port (212) to heat the molding compound (A) near the discharge port (212). The rotating member (221) is located in the rotating space (213), the rotating member (221) is movably connected to the pivot (220), and the pivot (220) is offset from the rotating center (2131) of the rotating space (213), For example, the pivot (220) is closer to the discharge port (212). In this embodiment, the pivot (220) has a sliding slot (2201), the sliding slot (2201) extends along a radial direction, and the rotating member (221) is slidably disposed on the sliding slot (2201).

Please refer to the fourth and fifth figures, so when the pivot (220) rotates, the rotating member (221) will rotate with the pivot (220), and the rotating member (221) is subjected to the wall (2132). The push is displaced in the radial direction relative to the pivot (220) to exert a pressurizing effect on the molding material (A). It should be particularly noted that the rotating member (221) is a single plate body in the embodiment, but is not limited thereto, and an auxiliary feeding portion may be connected to distribute a better feeding amount. Continuing to refer to the sixth and seventh figures, one of the widths (D1) of the rotating member (221) is larger than the diameter (D2) (D3) of the inlet (211) and the outlet (212). . So along this The chute (2201) is displaced and maintained within the swivel space (213). Thereby, the molding material (A) can be discharged from the printing head body (21) after being stirred by the rotating member (221) (as shown in Fig. 6).

In addition, as shown in the eighth embodiment, in another embodiment of the print head of the present invention, the print head (2A) and the previous embodiment both include a print head body (21A) and an eccentric rotary assembly (22A). The print head body (21A) and the eccentric rotary assembly (22A) are substantially the same. The eccentric rotary assembly (22A) also includes a pivot (220A), a rotating member (221A), and a power source ( 222A), the main difference from the previous embodiment is that the power source (222A) is a motor, and is disposed on the print head body (21A), the motor is directly connected to the pivot shaft (220A), so The pivot (220A) is actuated and is not limited to being driven by a flexible shaft.

Moreover, as shown in the ninth embodiment, in another embodiment of the print head of the present invention, the print head (2B) includes a row of print head bodies (21B) and an eccentric rotary unit (22B) as in the previous embodiment. The print head body (21B) defines a feed port (211B), a discharge port (212B) and a swivel space (213B). The swivel space (213B) communicates with the feed port (211B) and the outlet Feed port (212B). The eccentric swivel assembly (22B) is eccentrically disposed in the swivel space (213B), and the eccentric swivel assembly (22B) can also be pressurized due to eccentricity during operation.

Continuation, please refer to the tenth figure in conjunction with the ninth figure. In detail, the eccentric rotating component (22B) comprises a pivoting disk (220B) and a plurality of rotating components (221B), the pivoting disk (220B) defining a mounting groove (2202B) And a plurality of slots (2203B) pivotally disposed on the head body (21B) and offset from a center of rotation of the swing space (213B), wherein the plurality of slots (2203B) communicate with the swing space (213B) ). The plurality of rotary members (221B) each have a pivot end (2211B) and a push end (2212B). The plurality of rotating members (221B) are eccentrically pivotally disposed at the mounting groove (2202B) of the pivot plate (220B) by the pivoting end (2211B), for example, pivoted to a first pivot of a binding seat (200B). The portion (201B) is pivotally mounted to the pivot plate (220B) by a second pivot portion (202B) of the binding seat (200B). The plurality of rotating members (221B) are respectively movably disposed at the different positions (2203B) by the pushing end (2212B) and the plurality of movable lining members (2213B).

Continuing to refer to the eleventh and twelfth drawings, when the pivoting plate (220B) of the eccentric rotating assembly (22B) rotates, the rotating member (221B) will be rotated, at this time, due to the aforementioned rotating member (221B) It is eccentrically pivoted to the pivoting disk (220B), so that the rotating member (221B) is displaced relative to the pivoting plate (220B) in the aforementioned notch (2203), and a pressing action is generated in the rotating space (213B).

In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.

Claims (10)

A printing head of a multi-layer manufacturing device for outputting a molding material, comprising: a printing head body defining an inlet opening, a discharging opening and a rotating space, the rotating space connecting the feeding opening and the discharging a port for the molding material to enter the rotating space from the inlet, the rotating space has a center of rotation and a wall surrounding the center of rotation; and an eccentric rotating assembly comprising a pivot and a rotating member, the pivot Deviating from a center of rotation of the swivel space, the swivel member is movably coupled to the pivot to rotate the swivel member with the pivot when the pivot is rotated, and the swivel member is pushed by the wall surface relative to the pivot shaft Displaced radially, and the molding material is sent to the discharge port. The print head of the multi-layer manufacturing apparatus of claim 1, wherein the pivot has a sliding slot extending along the radial direction, and the rotating member is slidably disposed on the sliding slot. The printing head of the laminated manufacturing apparatus according to claim 1, wherein a width of one of the rotating members is larger than a diameter of the inlet and the outlet. The print head of the multi-layer manufacturing apparatus of claim 1, wherein the swivel space comprises a first side and a second side opposite to each other, the feed port being located adjacent to the first side, The discharge opening is located adjacent to the second side. The print head of the laminated manufacturing apparatus of claim 1, wherein the pivot is located adjacent to the discharge opening. The print head of the multi-layer manufacturing apparatus of claim 1, wherein the eccentric swivel assembly further comprises a flexible shaft and a motor, the motor is not disposed on the print head body, and the motor is pivoted A shaft is coupled to one end of the flexible shaft, and the other end of the flexible shaft is coupled to the pivot of the eccentric swivel assembly. A printing head of a multi-layer manufacturing device for outputting a molding material, comprising: a printing head body defining an inlet opening, a discharging opening and a rotating space, the rotating space connecting the feeding opening and the discharging a port for the molding material to enter the swivel space from the inlet; and An eccentric rotating assembly is eccentrically disposed in the rotating space to press the molding material from the inlet port to the discharge port when rotating relative to the head body. A rotary conveying type laminating manufacturing apparatus comprising: a main body; and a row of printing heads movably mounted on the main body, the printing head comprising a row of printing head bodies and an eccentric rotating component, the printing head The main body defines a receiving port, a discharging port and a rotating space, and the rotating space communicates with the feeding port and the discharging port, so that one of the granular molding materials enters the rotating space from the feeding port, the rotation The space has a center of rotation and a wall surrounding the center of rotation, the eccentric swivel assembly includes a pivot and a pivoting member, the pivot is offset from a center of rotation of the swivel space, and the swivel is movably coupled to the pivot to When pivoting, the rotating member is rotated with the pivot, and the rotating member is pushed by the wall to be displaced in a radial direction relative to the pivot, and the molding material is sent to the discharge port. The slewing and conveying type layer manufacturing apparatus according to claim 8, wherein the pivot shaft has a sliding groove extending along the radial direction, and the rotating member is slidably disposed on the sliding groove. The slewing and conveying type laminated manufacturing apparatus according to claim 8, wherein the main seat body comprises a fixing base, and the eccentric rotating component further comprises a flexible shaft and a motor, wherein the motor is disposed on the fixing base One of the motors is pivotally coupled to one end of the flexible shaft, and the other end of the flexible shaft is coupled to the pivot of the eccentric swivel assembly.