TWM496561U - 3D printing multi-color nozzle component - Google Patents

Description

3D printing multi-color nozzle assembly

The present invention relates to a head assembly, and more particularly to a multi-color head assembly for 3D printing.

3D printing refers to the use of powdered metal or plastic materials to form objects by layer-by-layer stacking. Multi-color 3D printing is to further use different colors of materials to form three-dimensional objects with various colors. In the prior art, when performing multi-color 3D printing, various strips of different materials are used in combination with a nozzle assembly, each nozzle assembly includes a heating device and a nozzle, and the nozzle is disposed on the heating device; when used, the solid state The strip is inserted into the nozzle assembly and heated by the heating device to a liquid state, after which it is extruded from the nozzle.

However, since the strips of each material are matched with a nozzle assembly, numerous nozzle assemblies can cause bulk, weight, cost, and maintenance difficulties.

In view of the shortcomings and deficiencies of the prior art described above, the present invention provides a 3D printing multi-color head assembly that allows a plurality of strips of different colors or materials to share the same heating device and nozzle.

In order to achieve the above-mentioned creative purposes, the technical means adopted in the present invention is to design a 3D printing multi-color nozzle assembly, which comprises: a fixing base having an opposite top surface and a bottom surface and extending through the top surface of the fixing seat And a bottom surface has a main nozzle hole; a switching seat is disposed on the fixing base, the switching seat has a top surface and a bottom surface, the bottom surface of the switching seat faces the top surface of the fixing seat, and the bottom surface and the top surface of the switching seat a plurality of main feed holes, the main spray head holes of the fixed seat selectively communicate with one of the main feed holes; a main drive device disposed on the fixed seat, and the main spray head holes of the fixed seat can be selectively connected thereto A main feed hole communicates; a main throat, one end of which is connected to the main nozzle hole of the bottom surface of the fixed seat; a main heating device connected to the other end of the main throat; and a main spray head which is disposed on the main heating device.

The advantage of this creation is that the strips of different colors or materials are respectively installed in the plurality of main feed holes on the switch seat, and by rotating or moving the switch seat, any strip can be corresponding to the main nozzle hole of the fixed seat. So that the strip is heated by the main heating device and extruded from the main nozzle; thereby, the strips of different materials can share the same heating device and the nozzle, thereby reducing the overall volume, reducing the weight, reducing the cost and facilitating Maintenance and other functions.

The 3D printing multi-color nozzle assembly, wherein: the switch seat is rotatably disposed on the fixed seat; the main drive device can rotate the switch seat relative to the fixed seat.

The 3D prints a multi-color showerhead assembly in which the main drive is a stepper motor.

The 3D printing multi-color nozzle assembly, wherein: the top surface of the fixing base is provided with a printed circuit board; the top surface of the fixing base is provided with a grounding elastic element, which penetrates the printed circuit board and abuts against the bottom surface of the switching seat; The top surface of the fixing base is provided with a first motor positioning post; the bottom surface of the switching seat is provided with a second motor positioning post, and the second motor positioning post is selectively abutted against the first motor positioning post.

The 3D printing multi-color head assembly, wherein the switch seat is sleeved relative to the main drive device, the main drive device is provided with an output shaft, and the output shaft of the main drive device is inserted into the switch seat.

The 3D printing multi-color nozzle assembly, wherein: the switch seat is movably disposed on the fixed seat relative to the linear movement; and the main driving device can linearly move the switch seat relative to the fixed seat.

The 3D printing multi-color nozzle assembly, wherein: the main driving device is disposed beside the switching seat, and the main driving device is provided with an output shaft and a gear, and the gear sleeve is fixed outside the output shaft; the switching seat corresponds to the main driving device The side is provided with a laterally extending rack that meshes with the gear of the main drive.

The 3D printing multi-color nozzle assembly, wherein the top surface of the fixing seat is provided with a plurality of balls, and the balls abut against the bottom surface of the switching seat.

The 3D printing multi-color nozzle assembly, wherein: the top surface of the fixing base is provided with a metal piece; the bottom surface of the switching seat is embedded with a plurality of magnets, and the magnets adsorb the metal piece of the fixing seat.

The 3D printing multi-color nozzle assembly, wherein the top surface of the fixing seat is provided with a plurality of tact switches, and the main feeding hole of the switching seat selectively corresponds to the position of the tact switch.

The 3D printing multi-color nozzle assembly, wherein the bottom surface of the switching seat is fixed with a material knife, and the material knife has a plurality of material holes, and the material holes correspond to the positions of the main nozzle holes of the fixing seat.

The 3D printing multi-color nozzle assembly, wherein the top surface of the fixing seat is fixed with a material knife, and the material knife has a hole penetrating therein, and the material hole corresponds to the position of the main nozzle hole of the fixing seat.

The 3D printing multi-color head assembly, wherein the top surface of the fixing seat is provided with a temperature sensing element adjacent to the position of the main nozzle hole of the bottom surface of the fixing seat.

The 3D printing multi-color nozzle assembly further includes a heater wire cutting assembly, comprising: a mounting bracket disposed on the fixing base; and a heating wire device rotatably disposed on the mounting bracket And a heating wire is disposed, the heating wire is inserted into the fixing seat, and is located at one side of the main nozzle hole of the top surface of the fixing seat, and the heating wire can be rotated from the top surface of the fixing seat according to the rotation of the heating wire device. One side of the main nozzle hole moves to the other side.

The 3D printing multi-color nozzle assembly, wherein the heating wire device of the heating wire cutting assembly comprises: a body that is rotatably disposed on the mounting frame; and an abutting member that is movably disposed on the body And one end of the heating wire is fixed on the abutting member; a heating wire elastic member is disposed between the body and the abutting member, and pushes the abutting member away from the body to further pull the heating wire.

The 3D printing multi-color nozzle assembly, wherein the heating wire cutting assembly further comprises: a heating wire driving device, which is disposed on the mounting frame and is provided with an output shaft; and two heating wire gears, which are engaged with each other, one of which The heating wire gear fixes the output shaft of the heating wire driving device; the heating wire device is disposed on the other heating wire gear.

The 3D printing multi-color head assembly, wherein the heating wire cutting assembly further comprises two sensing members respectively located on opposite sides of the main nozzle hole of the top surface of the fixing seat; the heating wire device selectively abuts against the two Inductive member to stop heating the wire drive.

The 3D printing multi-color head assembly, wherein the heating wire driving device is a speed reducing motor.

The 3D printing multi-color nozzle assembly, wherein: the mounting bracket of the heating wire cutting assembly and the fixing base form a main nozzle hole of the fixing seat, and the main throat tube is commonly sandwiched; the mounting bracket is magnetically adsorbed on the fixing seat And further through a mounting bracket with a screw and threaded into the fixing seat.

The 3D printing multi-color nozzle assembly has a magnet disposed on the mounting bracket, and a magnet is disposed on the fixing seat, and the magnet of the mounting bracket and the magnet of the fixing base are mutually attracted to each other.

The 3D printing multi-color nozzle assembly, wherein the outer wall surface of the fixing seat is recessed with a plurality of heat-dissipating ring grooves, and the heat-dissipating ring grooves are spaced apart from each other.

The 3D printing multi-color nozzle assembly further includes at least one pair of nozzle groups, each sub-head group comprising: a displacement assembly disposed on the fixed seat; and a pair of throat tubes connected to the displacement assembly at one end; The auxiliary heating device is connected to the other end of the auxiliary pipe; a pair of nozzles are disposed on the auxiliary heating device; wherein the displacement assembly can move the auxiliary pipe, the auxiliary heating device and the auxiliary nozzle up and down relative to the fixed seat.

The 3D printing multi-color head assembly, wherein the displacement assembly of each sub-head group comprises: a casing disposed on the fixing base; a driving device disposed in the casing and provided with an output shaft; a sub-gear that meshes with each other, wherein one of the sub-gears fixes an output shaft of the sub-drive device; a displacement sleeve that is threaded to the other sub-gear and that is relatively movable but non-rotatably fitted to the housing The displacement sleeve is provided with a fixed auxiliary throat at one end, and a auxiliary feeding hole is provided at the opposite end, and the auxiliary feeding hole communicates with the auxiliary throat.

The 3D prints a multi-color showerhead assembly in which the secondary drive is a reduction motor.

The technical means adopted by the present invention for achieving the intended purpose of creation are further explained below in conjunction with the drawings and the preferred embodiment of the present invention.

Referring to FIG. 1 to FIG. 3, the first embodiment of the 3D printing multi-color nozzle assembly of the present invention comprises a fixing base 10, a switching seat 20, a main driving device 30, a main throat 41, and a main assembly. The heating device 42, a main nozzle 43, a displacement assembly 50 and a pair of nozzles.

Referring to FIG. 2 to FIG. 4 , FIG. 7 and FIG. 9 , the fixing base 10 has a cylindrical shape and has a central shaft. The fixing base 10 has a top surface 11 and a bottom surface 12 opposite to each other. The surface 11 and the bottom surface 12 have a main nozzle hole 13; in the state of use of the embodiment, the top surface 11 is the top surface of the fixing base 10, and the bottom surface 12 is the bottom surface of the fixing base 10, but the use direction of the creation is not Limiting, there may be a certain degree of inclination, etc.; the top surface 11 of the fixing base 10 is provided with a printed circuit board 71, the printed circuit board 71 is provided with a metal piece 72, and the metal piece 72 is provided with a material knife 73; the printed circuit board The upper circumference of the 71 is provided with a plurality of balls 74 which are rollably constrained between the printed circuit board 71 and the metal piece 72 and protrude outside the metal piece 72, and the balls 74 are located outside the material blade 73; The plurality of tact switches 75 are disposed on the printed circuit board 71. The tact switches 75 are disposed around the central axis of the fixed base 10 at equal intervals. The top surface 11 of the fixed base 10 is provided with a grounding elasticity. Element 76 and a first motor positioning post 77, grounding elastic element 76 and The motor positioning post 77 extends through the printed circuit board 71, the metal piece 72 and the material blade 73. The material blade 73 has an annular shape and has a plurality of holes 731 extending therethrough. The material holes 731 are circumferentially spaced apart and correspond to the fixing seats respectively. The position of the main nozzle hole 13 and the tact switch 75 of the 10; the printed circuit board 71 is provided with two cutting heating devices 78 and a temperature sensing element 79, and the two cutting heating devices 78 and the temperature sensing element 79 are adjacent to The position of the main nozzle hole 13 of the bottom surface 12 of the fixing base 10; the outer side of the fixing base 10 is provided with a fan 15 whose position corresponds to the position of the cutting heating device 78; the outer wall surface of the fixing base 10 is recessed with a plurality of heat dissipating ring grooves 14 The heat dissipation ring grooves 14 are spaced apart from each other.

Referring to FIG. 3, FIG. 7 and FIG. 9, the switching seat 20 is rotatably disposed on the fixing base 10, and the rotating shaft of the switching base 20 and the fixing base 10 is the central axis of the fixing base 10; The bottom surface 21 faces the top surface 11 of the fixing base 10 and abuts against the ball 74 on the top surface 11 and the grounding elastic member 76. The aforementioned blade 73 is fixed to the switch. On the bottom surface of the base 20, a plurality of magnets 24 are embedded in the bottom surface 21 of the switch housing 20. The magnets 24 pass through the blade 73 and adsorb the metal piece 72 of the mount 10, but there is still a slight distance between the magnet 24 and the metal piece 72. The switching seat 20 has a plurality of main feeding holes 23 extending through the bottom surface 21 and the top surface 22, and the main feeding holes 23 are circumferentially arranged at an equal interval angle between the switching base 20 and the rotating shaft of the fixing base 10, and the main feeding holes 23 are provided. Selectively communicating with the main nozzle hole 13 of the fixing base 10 and selectively corresponding to the position of the tact switch 75 of the fixing base 10; the bottom surface 21 of the switching seat 20 is provided with a second motor positioning post 25, and the second motor is positioned The post 25 selectively abuts against the first motor positioning post 77 of the mount 10.

As shown in FIG. 2 and FIG. 7 , the main driving device 30 is disposed on the fixing base 10 and is disposed in the switching base 20 . The main driving device 30 is provided with an output shaft 31 , and the output shaft 31 of the main driving device 30 . The main driving device 30 is a stepping motor, but is not limited thereto. The driving device 20 is inserted into the switching base 20, and the main driving device 30 is a stepping motor.

Referring to FIG. 2 to FIG. 4, one end of the main throat 41 is threaded with a main nozzle hole 13 screwed to the bottom surface 12 of the fixing base 10; the two cutting heating devices 78 of the fixing base 10 are adjacent to the main throat. 41, and the main throat 41 is heated by the copper foil on the printed circuit board 71.

The main heating device 42 is connected to the other end of the main throat 41; the main heating device 42 is provided with a temperature sensing element 421 and a heating tube 422.

The aforementioned main nozzle 43 is provided on the main heating device 42.

As shown in FIG. 5 to FIG. 7 , the displacement assembly 50 is disposed on the fixed base 10 and includes a housing 51 , a pair of driving devices 52 , two pairs of gears 53 , 54 , a displacement sleeve 55 , and a fan . 56; the housing 51 is disposed on the outer side of the fixed base 10; the auxiliary driving device 52 is disposed in the housing 51, and is provided with an output shaft 521. In the embodiment, the auxiliary driving device 52 is a DC motor, but not The two pairs of gears 53 and 54 are engaged with each other. One of the pair of gears 53 fixes the output shaft 521 of the sub-drive device 52. The displacement sleeve 55 is threaded to the other sub-gear 54 and is relatively movable but not opposite. Rotatingly fitting to the housing 51, the displacement sleeve 55 is provided with a sub-feed hole 551 at one end thereof; specifically, the housing 51 protrudes with a convex portion 511 which is fitted to the outer wall surface of the displacement sleeve 55. The displacement sleeve 55 is movable relative to the housing 51 but is not rotatable relative to the housing 51; the fan 56 is disposed adjacent to the housing 51.

Referring to FIG. 1 and FIG. 5 to FIG. 7, the aforementioned auxiliary nozzle group includes a pair of throats 61, a pair of heating devices 62 and a pair of nozzles 63.

One end of the aforementioned auxiliary throat pipe 61 is bored and fixed to the other end of the displacement sleeve 55, and is indirectly disposed on the fixed seat 10, and the auxiliary throat pipe 61 communicates with the auxiliary feed hole 551 of the displacement sleeve 55.

The auxiliary heating device 62 is connected to the other end of the auxiliary throat 61; the secondary heating device 62 is provided with a temperature sensing element 621 and a heating tube 622.

The aforementioned sub-head 63 is provided on the sub-heating device 62.

When the sub-drive device 52 drives the two sub-gears 53, 54 to rotate, the displacement sleeve 55, which cannot be rotated, moves up and down relative to the fixed seat 10, thereby moving the sub-pipe 61, the sub-heating device 62 and the sub-head 63 up and down. .

Referring to FIG. 3, FIG. 6 and FIG. 7, when the present invention is used, the relative angle between the switch seat 20 and the fixed base 10 is first adjusted, even if the main feed hole 23 on the switch seat 20 and the main spray head on the fixed base 10 are used. The holes 13 or the tact switch 75 are aligned, and since the main feed holes 23 on the switch holder 20 are circumferentially arranged at equal intervals, the main head holes 13 and the tact switch 75 on the fixed seat 10 are also arranged at equal intervals. The two spacing angles are equal, so that only one of the main feeding holes 23 is aligned with the main nozzle hole 13 or one of the tact switches 75.

Referring to FIG. 3, FIG. 4 and FIG. 7, it is determined whether the rubber strip 91 has been mounted to the positioning, that is, whether all the main feeding holes 23 to be used are first installed with the rubber strip 91, as follows: The strips 91 of the plurality of different color materials are respectively pushed into the plurality of main feed holes 23 until the end of the strip 91 abuts against the tact switch 75 to change the potential of the tact switch 75, and the strip 91 is detected. The existence of the extruder stops the action of the extruder, so that the strip 91 is no longer advanced, and the stopping point is the positioning point of the feeding, and the positioning point is used as the basis of the feeding length, so that the detection of whether there is a strip 91 is completed at the same time. And detecting and calculating the length positioning point of the strip 91; in addition, the warning device can be further installed, and when the main feeding hole 23 to be used is not provided with the strip 91, the warning device can timely display the screen and the signal Or a voice to warn.

In use, the strip 91 corresponding to the main head opening 13 is pushed down by the extruder to the main throat 41 and the main heating unit 42, and finally extruded from the main head 43.

When the strip 91 is to be extruded, the strip 91 in use is first cut, and the temperature of the main throat 41 is detected by the temperature sensing element 79 on the printed circuit board 71, and passed through the cutting heating device 78. And the fan 15 controls the main throat 41 to a preset temperature so that the strip 91 in the main throat 41 softens without melting; after the main throat 41 is heated to a preset temperature, the main drive unit 30 rotates the switch seat. 20, while the softened strip 91 still passing through the hole 731 is cut by the periphery of the hole 731 of the material blade 73 because it is rotated together, and the strip 91 to be replaced is rotated to correspond to the main head hole 13, So that it can be pushed out by the extruder.

By this means, the plurality of strips 91 of different materials can share the same heating device 42 and the nozzle 43, and thereby achieve the effects of reducing the overall volume, reducing the weight, reducing the cost, and facilitating maintenance.

Referring to FIG. 9 , in the foregoing process, when the switch seat 20 rotates relative to the fixed seat 10 , the ball 74 can make the relative rotation smoother, and the magnet 24 disposed on the switch seat 20 is attracted to the fixed seat 10 . The metal piece 72 generates a pull-down force, thereby increasing the smoothness of the switching seat 20 when it is rotated or cut.

Referring to FIG. 3, in addition, the stepping motor (main driving device 30) needs a positioning point signal as a basis for its movement calculation, so the grounding elastic member 76 can conduct the ground potential on the printed circuit board 71 to the switching seat 20. When the switch seat 20 rotates relative to the fixed seat 10, when the second motor positioning post 25 of the switch seat 20 abuts against the first motor positioning post 77 of the mount 10, the first motor positioning post of the mount 10 is lowered. The potential of 77 can be used as a positioning point of the stepping motor (main driving device 30) to calculate the rotation angle of the switching base 20 so that the main feeding hole 23 is aligned with the main head hole 13 or the tact switch 75.

Referring to FIG. 7, in the foregoing process, after the strip 91 is replaced, the material of the strip 91 remains in the main throat 41 and the main nozzle 43, so that the material extruded by the main nozzle 43 does not change immediately. However, when the material is printed in the same way, the residual material will be printed on the inner layer. Therefore, if the strips 91 before and after the replacement are only of different colors and the materials are the same, the residual materials of different colors are printed inside without affecting the quality of the finished product. Or visual effects.

However, some rubber strips are not allowed to be mixed together. For example, PVA (Polyvinyl alcohol) is a water-soluble supporting material; in general, when 3D printing, many places need special support due to the structural relationship. If there is no support, it will sag due to gravity, so the user will use the PVA strip to support the material. Since the material will dissolve in water at normal temperature, the finished product can be put into the water after printing. Part of the PVA material is dissolved to leave only the desired finished product; in addition, some materials are then used for 3D printing with different materials, which are structural strength considerations; therefore, if the strips 91 cannot be mixed with other materials, Mixing with the other strips 91 in the main throat 41 and the main head 43 affects the structural strength of the finished product.

Therefore, the strips 92 which cannot be mixed with other materials can be used alone on the sub-pipe 61, the sub-heating device 62 and the sub-head 63, so that there is no problem of mixing with other materials; When the rubber strip 91 of the material is used, the secondary throat 61, the sub-heating device 62, and the sub-head 63 can also be used in the same manner to avoid waiting for the replacement of the strip 91.

Referring to FIG. 7 and FIG. 8 , in addition, when the main nozzle 43 is used for printing, the components of the sub-head 63 and the like are retracted by the displacement assembly 50 to make the main nozzle 43 protrude from the sub-head 63; When the sub-head 63 is used for printing, the components such as the moving sub-head 63 are extrapolated to make the sub-head 63 relatively protruded, thereby preventing the interference between the two heads 43, 63.

In other embodiments, the creation may not be provided with a cutting heating device, and the main heating device may also heat the main throat to soften the rubber strip.

In other embodiments, the present invention may not be equipped with a knife. Instead of using a motor with a relatively large torque (main drive), the strip can be cut directly through the abutment of the main throat and the switch seat.

Referring to FIG. 10, the following is a second embodiment of the present invention, which is substantially the same as the first embodiment, but the blade 73B is fixed on the fixing base 10B and is also located above the printed circuit board 71B. The cutting material heating device 78B can simultaneously heat the material blade 73B through the copper foil on the printed circuit board 71B, so that the material blade 73B can cut the rubber strip more easily.

Referring to FIG. 11 to FIG. 15 , the following is a third embodiment of the present invention, which is substantially the same as the first embodiment, but is not provided with a knife and a cutting heating device, and further comprises a heating wire cutting assembly. 80A, comprising a mounting frame 81A, a heating wire driving device 82A, two heating wire gears 83A, 84A, a heating wire device 85A, two sensing members 87A, 88A and a fan 86A.

The mounting bracket 81A is disposed on the outer side of the fixing base 10A. The mounting bracket 81A and the fixing base 10A together form the main nozzle hole 13A of the fixing base 10A, and the main throat 41A is commonly sandwiched. The mounting bracket 81A is provided with a magnet 811A for fixing. A magnet 16A is disposed on the seat 10A, and the magnet 811A of the mounting bracket 81A and the magnet 16A of the fixing base 10A are mutually abutted against each other (as shown in FIG. 13), whereby the mounting bracket 81A is magnetically attracted to the fixing base 10A, and further A screw 89A extends through the mounting bracket 81A and is threaded into the mounting base 10A.

The heating wire driving device 82A is disposed on the mounting frame 81A, and is provided with an output shaft 821A. In the embodiment, the heating wire driving device 82A is a DC gear motor, but is not limited thereto.

The aforementioned two heating wire gears 83A, 84A are in mesh with each other, and one of the heating wire gears 83A fixes the output shaft 821A of the heating wire driving device 82A.

The heating wire device 85A is disposed on the other heating wire gear 84A, and the heating wire device 85A is provided with a body 852A, an abutting member 853A, a heating wire 851A and a heating wire elastic member 854A; the body 852A is relatively rotatablely The fixing member 853A is movably disposed on the body 852A; one end of the heating wire 851A is fixed on the abutting member 853A, and the other end of the heating wire 851A is inserted into the fixing seat 10A, and the heating wire is The 851A is located on one side of the main nozzle hole 13A of the top surface 11A of the fixing base 10A; the heating wire elastic member 854A is disposed between the body 852A and the abutting member 853A, and pushes the abutting member 853A away from the body 852A, thereby The heating wire 851A is stretched; thus, even if the heating wire 851A is stretched by thermal expansion when it is used, the heating wire 851A is not slack and can be kept in a tensioned state.

The two sensing members 87A, 88A are respectively located on opposite sides of the main nozzle hole 13A of the top surface 11A of the fixing base 10A, and the heating wire device 85A selectively abuts against the two sensing members 87A, 88A to stop the heating wire driving device. 82A.

The aforementioned fan 86A is provided on the mounting frame 81A and serves to assist in adjusting the temperature of the main throat 41A.

Referring to FIG. 15 and FIG. 16, when the heating wire driving device 82A drives the two heating wire gears 83A, 84A to rotate, the heating wire device 85A rotates along with the heating wire gear 84A with respect to the mounting frame 81A, and the heating wire 851A is It is moved from one side of the main head hole 13A of the bottom surface 12A to the other side, whereby the purpose of cutting the strip 91A is also achieved.

In addition, when the heating wire driving device 82A is activated, when the heating wire device 85A rotates the other side of the main nozzle hole 13A to abut the sensing member 88A on the side, the sensing member 88A stops the heating wire driving device 82A; When the next strip 91A is to be cut and the filament drive unit 82A is activated again, the heater unit 85A will reversely rotate back to the original side to abut the sensor 87A on the side, at which time the sensor 87A will also stop. The wire drive unit 82A is heated, whereby the purpose of controlling the rotation of the wire unit 85A can be achieved by a simple device.

Furthermore, the mounting frame 81A and the fixing base 10A are designed to be locked by the magnetic attraction-fit screw 89A, and the heat-conducting area can be increased, and the main nozzle can be rotated without being pre-disassembled and connected without wires. And the main throat and other components are disassembled together to achieve the effect of quick disassembly.

In other embodiments, the sub-head set can also have a complex array and can also be placed with the filament cutting assembly so that it can be conveniently used with a wider variety of strips of different materials.

In other embodiments, the creation may also have no sub-nozzle set, which can also achieve the effect of allowing a plurality of strips of different materials to share the same heating device and nozzle.

In other embodiments, the main drive device may not be a stepping motor, and only the switch seat can be accurately rotated.

Referring to FIG. 17 and FIG. 18, the following is a fourth embodiment of the present invention, which is substantially the same as the first embodiment, but the switch base 20C is instead disposed on the fixed seat 10C with a relatively linear movement, and the switch seat The main feed hole 23C on the 20C is changed to a linear interval, whereby the switch holder 20C can be linearly moved relative to the fixed seat 10C through the main drive unit 30C, so that the different main feed holes 23C on the switch holder 20C are respectively fixed to be fixed. The main nozzle hole 13C of the seat 10C can also allow the plurality of strips 91C of different materials to share the same main heating device 42C and the main nozzle 43C, thereby achieving the effects of reducing the overall volume, reducing the weight, reducing the cost, and facilitating maintenance.

In the present embodiment, the main driving device 30C is disposed beside the switch housing 20C, and a gear 32C is sleeved on the output shaft 31C of the main driving device 30C. The switch seat 20C is provided with a lateral extension corresponding to the side surface of the main driving device 30C. The rack 26C meshes with the gear 32C of the main drive unit 30C, and the main drive unit 30C thereby linearly moves the switch holder 20C.

In addition, although not shown in the drawings, the fourth embodiment can also be equipped with the ball, the tact switch, the temperature sensing element, the two different positions of the material knife or the heating wire cutting assembly and the pair of the first embodiment. The nozzle set is used to achieve the aforementioned numerous functions.

The above description is only a preferred embodiment of the present invention, and does not impose any form limitation on the present invention. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present creation, and has any technical field. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. The technical essence of the creation Any simple modification, equivalent change and modification of the above embodiments are still within the scope of the technical solution of the present invention.

10‧‧‧ Fixed seat
11‧‧‧ top surface
12‧‧‧ bottom
13‧‧‧Main nozzle hole
14‧‧‧Solution ring groove
15‧‧‧fan
20‧‧‧Switching seat
21‧‧‧ bottom
22‧‧‧ top surface
23‧‧‧Main feed hole
24‧‧‧ magnet
25‧‧‧Second motor positioning post
30‧‧‧Main drive
31‧‧‧ Output shaft
41‧‧‧ main pipe
42‧‧‧Main heating unit
421‧‧‧ Temperature sensing element
422‧‧‧heat pipe
43‧‧‧Main nozzle
50‧‧‧displacement components
51‧‧‧Shell
511‧‧‧ convex
52‧‧‧Subdriver
521‧‧‧ Output shaft
53‧‧‧Sub gear
54‧‧‧Sub gear
55‧‧‧Displacement sleeve
551‧‧‧Sub feed hole
61‧‧‧Secondary pipe
62‧‧‧Sub heating unit
621‧‧‧Temperature sensing components
622‧‧‧heat pipe
63‧‧‧Subjector
64‧‧‧Fan
71‧‧‧Printed circuit board
72‧‧‧metal pieces
73‧‧‧Tools
731‧‧‧ hole
74‧‧‧ balls
75‧‧‧Tact switch
76‧‧‧ Grounding elastic element
77‧‧‧First motor positioning post
78‧‧‧Cutting heating device
79‧‧‧Temperature sensing components
91‧‧‧Strips
92‧‧‧Strips
10B‧‧‧ Fixed seat
71B‧‧‧Printed circuit board
73B‧‧‧Tools
78B‧‧‧Cutting heating device
10A‧‧‧ fixed seat
11A‧‧‧ top surface
13A‧‧‧Main nozzle hole
16A‧‧‧ Magnet
41A‧‧‧Main pipe
80A‧‧‧heat wire cutting assembly
81A‧‧‧ mounting bracket
811A‧‧‧ Magnet
82A‧‧‧Feed wire drive
821A‧‧‧ Output shaft
83A‧‧‧heat wire gear
84A‧‧‧heat wire gear
85A‧‧‧Feed wire device
851A‧‧‧heat wire
852A‧‧‧ Ontology
853A‧‧‧Abutment
854A‧‧‧heating wire elastic element
86A‧‧‧fan
87A‧‧‧Inductive parts
88A‧‧‧Inductive parts
89A‧‧‧ screws
91A‧‧‧Strip
10C‧‧‧ fixed seat
13C‧‧‧Main nozzle hole
20C‧‧‧Switching seat
23C‧‧‧Main feed hole
26C‧‧‧Rack
30C‧‧‧Main drive unit
31C‧‧‧ Output shaft
32C‧‧‧ Gears
42C‧‧‧Main heating unit
43C‧‧‧Main nozzle
91C‧‧‧ Rubber strip

Figure 1 is a perspective view of the first embodiment of the present invention. Figure 2 is another perspective perspective view of the first embodiment of the present invention. Figure 3 is an exploded view of the first element of the first embodiment of the present invention. Figure 4 is an exploded view of the second element of the first embodiment of the present invention. Figure 5 is a third element exploded view of the first embodiment of the present invention. Figure 6 is a top view of the first embodiment of the present invention. Figure 7 is a side cross-sectional view showing the main nozzle of the first embodiment of the present invention in use. Figure 8 is a side cross-sectional view showing the use of the sub-header of the first embodiment of the present invention. Figure 9 is a cross-sectional view of the ball and tact switch of the first embodiment of the present invention. Figure 10 is a partial perspective view of a second embodiment of the present invention. Figure 11 is a perspective view of a third embodiment of the present invention. Figure 12 is an exploded view of a portion of the third embodiment of the present invention. Figure 13 is a top cross-sectional view of the mounting bracket of the third embodiment of the present invention. Figure 14 is a top cross-sectional view of the heating wire driving device of the third embodiment of the present invention. Figure 15 is a top plan view of the third embodiment of the present invention. Figure 16 is a top plan view showing the cut of the third embodiment of the present invention. Figure 17 is a perspective view of a fourth embodiment of the present invention. Figure 18 is a side cross-sectional view showing a fourth embodiment of the present invention.

10‧‧‧ Fixed seat

14‧‧‧Solution ring groove

15‧‧‧fan

20‧‧‧Switching seat

22‧‧‧ top surface

30‧‧‧Main drive

31‧‧‧ Output shaft

42‧‧‧Main heating unit

422‧‧‧heat pipe

43‧‧‧Main nozzle

50‧‧‧displacement components

51‧‧‧Shell

53‧‧‧Sub gear

62‧‧‧Sub heating unit

621‧‧‧Temperature sensing components

622‧‧‧heat pipe

91‧‧‧Strips

92‧‧‧Strips

Claims (24)

A 3D printing multi-color nozzle assembly comprises: a fixing base having an opposite top surface and a bottom surface, and a main nozzle hole extending through a top surface and a bottom surface of the fixing seat; a switching seat disposed on the fixing base The switch seat has a top surface and a bottom surface, the bottom surface of the switch seat faces the top surface of the fixed seat, and the bottom surface and the top surface of the switch seat have a plurality of main feed holes, and the main nozzle holes of the fixed seat are selectively connected thereto a main driving hole is communicated; a main driving device is disposed on the fixing seat, and the main nozzle hole of the fixing seat can be selectively communicated with one of the main feeding holes; and a main throat pipe is connected to the fixing seat at one end thereof The main nozzle hole of the bottom surface; a main heating device connected to the other end of the main pipe; and a main nozzle which is disposed on the main heating device. The 3D printing multi-color head assembly according to claim 1, wherein: the switch seat is rotatably disposed on the fixed seat; and the main driving device can rotate the switch seat relative to the fixed seat. The 3D printing multi-color head assembly of claim 2, wherein the main drive is a stepper motor. The 3D printing multi-color nozzle assembly according to claim 3, wherein: the top surface of the fixing base is provided with a printed circuit board; the top surface of the fixing base is provided with a grounding elastic member penetrating the printed circuit board and abutting against the switching The bottom surface of the seat is provided with a first motor positioning post; the bottom surface of the switch seat is provided with a second motor positioning post, and the second motor positioning post is selectively abutted against the first motor positioning post. The 3D printing multi-color head assembly according to claim 2, wherein the switch seat is sleeved relative to the main drive device, the main drive device is provided with an output shaft, and the output shaft of the main drive device is inserted and switched. seat. The 3D printing multi-color head assembly according to claim 1, wherein: the switch seat is movably disposed on the fixed seat with respect to the linear movement; and the main driving device can move the switch seat linearly with respect to the fixed seat. The 3D printing multi-color nozzle assembly according to claim 6, wherein: the main driving device is disposed beside the switching seat, and the main driving device is provided with an output shaft and a gear, and the gear sleeve is fixed outside the output shaft; A laterally extending rack is provided on the side of the main drive, which meshes with the gear of the main drive. The 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein the top surface of the fixing seat is provided with a plurality of balls which abut against the bottom surface of the switching seat. The 3D printing multi-color nozzle assembly according to any one of claims 1 to 7, wherein: a top surface of the fixing base is provided with a metal piece; a bottom surface of the switching seat is embedded with a plurality of magnets, and the magnets adsorb the metal of the fixing seat. sheet. The 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein the top surface of the fixing base is provided with a plurality of tact switches, and the main feeding hole of the switching seat selectively corresponds to the tact switch position. The 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein a bottom surface of the switch seat is fixed with a material knife, and the material hole has a plurality of material holes, and the material holes correspond to the fixed seat. The position of the main nozzle hole. The 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein a top surface of the fixing base is fixed with a material knife, and the material hole has a hole penetrating therein, the material hole corresponding to the main part of the fixing seat. The position of the nozzle hole. A 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein the top surface of the holder is provided with a temperature sensing element adjacent to the position of the main head hole of the bottom surface of the holder. The 3D printing multi-color head assembly according to any one of claims 1 to 7, further comprising a heater wire cutting assembly, comprising: a mounting bracket disposed on the fixing base; a heating wire device, The utility model is disposed on the mounting frame in a relatively rotatable manner, and is provided with a heating wire, the heating wire is inserted into the fixing seat, and is located on one side of the main nozzle hole of the top surface of the fixing seat, and the heating wire rotates with the heating wire device. And can move from one side of the main nozzle hole of the top surface of the fixing seat to the other side. The 3D printing multi-color head assembly of claim 14, wherein the heating wire device of the heating wire cutting assembly comprises: a body rotatably disposed on the mounting frame; and an abutting member movably The heating wire is disposed on the body; the heating wire is disposed between the body and the abutting member Pull up. The 3D printing multi-color head assembly according to claim 14, wherein the heating wire cutting assembly further comprises: a heating wire driving device disposed on the mounting frame and provided with an output shaft; and two heating wire gears, which are mutually Engagement, wherein one of the heating wire gears fixes the output shaft of the heating wire driving device; the heating wire device is disposed on the other heating wire gear. The 3D printing multi-color head assembly of claim 16, wherein the heating wire cutting assembly further comprises two sensing members respectively located on opposite sides of the main nozzle hole of the top surface of the fixing seat; the heating wire device selectively Abut against the two sensing members to stop the heating wire drive. The 3D printing multicolor showerhead assembly of claim 16 wherein the heater wire drive is a retarder motor. The 3D printing multi-color nozzle assembly according to claim 14, wherein: the mounting bracket of the heating wire cutting assembly and the fixing base form a main nozzle hole of the fixing seat, and the main throat tube is commonly sandwiched; the mounting frame is magnetically attracted It is mounted on the fixing base and further penetrates the mounting bracket with a screw and is screwed into the fixing seat. The 3D printing multi-color nozzle assembly according to claim 19, wherein a magnet is disposed on the mounting frame, and a magnet is disposed on the fixing base, and the magnet of the mounting bracket and the magnet of the fixing base are mutually attracted to each other. The 3D printing multi-color head assembly according to any one of claims 1 to 7, wherein the outer wall surface of the fixing seat is recessed with a plurality of heat-dissipating ring grooves, and the heat-dissipating ring grooves are spaced apart from each other. The 3D printing multi-color head assembly according to any one of claims 1 to 7, further comprising at least one pair of nozzle groups, each of the pair of nozzle groups comprising: a displacement assembly disposed on the fixed seat; a pipe having one end connected to the displacement assembly; a pair of heating device connected to the other end of the auxiliary pipe; a pair of nozzles disposed on the auxiliary heating device; wherein the displacement assembly can move the auxiliary pipe up and down relative to the fixed seat Heating device and auxiliary nozzle. The 3D printing multi-color head assembly according to claim 22, wherein the displacement assembly of each sub-head group comprises: a housing disposed on the fixing base; a driving device disposed in the housing and provided with a An output shaft; two pairs of gears meshing with each other, wherein one of the pair of gears fixes an output shaft of the auxiliary drive device; a displacement sleeve that is threaded to the other of the sub-gears and is relatively movable but non-rotatably embedded Combined with the casing, one end of the displacement sleeve is sleeved with a fixed auxiliary throat, and the other end is provided with a secondary feeding hole, and the auxiliary feeding hole communicates with the auxiliary throat. The 3D printing multi-color head assembly of claim 23, wherein the secondary drive is a reduction motor.