CN212795900U - Multi-nozzle extrusion device and printing equipment - Google Patents
Multi-nozzle extrusion device and printing equipment Download PDFInfo
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- CN212795900U CN212795900U CN202021347203.5U CN202021347203U CN212795900U CN 212795900 U CN212795900 U CN 212795900U CN 202021347203 U CN202021347203 U CN 202021347203U CN 212795900 U CN212795900 U CN 212795900U
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Abstract
The application provides many shower nozzles extrusion device and printing apparatus, wherein, this many shower nozzles extrusion device includes: the first spray head assembly, the second spray head assembly and the heating assembly; the first spray head assembly comprises a first spray nozzle and a first throat pipe, the second spray head assembly comprises a second spray nozzle, a second throat pipe and a fixing piece, a first threaded hole and a second threaded hole which are communicated are formed in the heating assembly, and the first spray nozzle and the first throat pipe are fixedly connected with the heating assembly through the first threaded hole; the second nozzle and the second throat pipe are respectively and fixedly connected with the fixing piece, and the fixing piece is connected with the heating assembly through a second threaded hole. Therefore, the multi-nozzle extrusion device is adjustable in height and small in nozzle spacing, the problems of production cost and printing precision can be simultaneously solved, production cost is reduced, and printing precision is improved.
Description
Technical Field
The utility model belongs to the technical field of print, concretely relates to many shower nozzles extrusion device and printing apparatus.
Background
With the development of a three-dimensional (3D) printing technology, 3D printing equipment is widely used, and particularly, 3D printing equipment extruded by multiple nozzles can be used for realizing a nozzle printing model and a nozzle printing soluble support structure; or one nozzle prints one color and the other nozzle prints another color, thereby improving printing efficiency.
The existing 3D printing equipment extruded by multiple spray heads is generally in a structure of multi-short-range extrusion or multi-remote extrusion, and for the structure of multi-short-range extrusion, due to the assembly arrangement limitation of a multi-extruder, the distance between the two spray heads is far, so that the two spray heads cannot share one heating block, one heating rod and one thermistor, and the production cost is increased; for a multi-remote extrusion structure, the feeding and extruding force of an extruder is greatly reduced, the printing and back-pumping precision is unstable enough, and some special wires or novel wires, such as Thermoplastic polyurethane elastomers (TPU), metal wires and the like, cannot be printed successfully. Therefore, the existing 3D printing equipment with multiple extrusion nozzles cannot simultaneously consider the problems of production cost and printing precision.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application aims to provide a multi-nozzle extrusion device and printing equipment, and aims to solve the technical problem that in the prior art, a multi-short-range extrusion structure or a multi-long-range extrusion structure cannot give consideration to production cost and printing precision at the same time.
In a first aspect, an embodiment of the present application provides a multi-nozzle extrusion apparatus, including: the first spray head assembly, the second spray head assembly and the heating assembly; the first spray head assembly comprises a first spray nozzle and a first throat pipe, the second spray head assembly comprises a second spray nozzle, a second throat pipe and a fixing piece, a first threaded hole and a second threaded hole which are communicated are formed in the heating assembly, and the first spray nozzle and the first throat pipe are fixedly connected with the heating assembly through the first threaded hole; the second nozzle and the second throat pipe are respectively and fixedly connected with the fixing piece, and the fixing piece is connected with the heating assembly through the second threaded hole.
Optionally, the fixing piece is a nut, a half thread is arranged on the circumference of the nut, and the nut is rotationally fixed with the inner thread of the second threaded hole through the half thread.
Optionally, the heating assembly comprises a first jackscrew, and the first jackscrew is arranged on the side surface of the second threaded hole.
Optionally, the apparatus further comprises: a heat dissipation assembly and a first extrusion assembly; the heat dissipation assembly is fixedly connected with the first extrusion assembly through a bolt, a first through hole and a second through hole which are communicated with each other are formed in the heat dissipation assembly, the first throat pipe penetrates through the first through hole, the second throat pipe penetrates through the second through hole, and the first throat pipe is fixedly connected with the heat dissipation assembly through a second jackscrew on the heat dissipation assembly.
Optionally, the second jackscrew is disposed on a side surface of the first through hole.
Optionally, the first spray head assembly further comprises a first hose and a first connector, and the second spray head assembly further comprises a second hose and a second connector; the first throat pipe is fixedly connected with the first end of the first joint through the first hose, the second throat pipe is fixedly connected with the first end of the second joint through the second hose, and the first joint and the second joint are arranged on the end face of the first extrusion assembly in parallel.
Optionally, the first extrusion assembly comprises a first guide wheel and a first extrusion wheel which are engaged with each other, the first hose being arranged between the first guide wheel and the first extrusion wheel; the device further comprises: a second extrusion assembly disposed separately from the first extrusion assembly.
Optionally, the first nozzle assembly further comprises a third hose and a first material breakage detection device, and the second nozzle assembly further comprises a fourth hose, a fifth hose and a second material breakage detection device; the second end of first joint with the first end of third hose is connected, the second joint second end is connected with the first end of fourth hose, the second end of third hose with first disconnected material detection device fixed connection, the second end of fourth hose with subassembly fixed connection is extruded to the second, the subassembly is extruded to the second passes through the fifth hose with the disconnected material detection device fixed connection of second, wherein, the subassembly is extruded to the second includes that intermeshing's second leading wheel and second extrude the wheel, the fifth hose set up in the second leading wheel with the second is extruded between the wheel.
Optionally, the device further comprises a base, a protective shell and a fan; the fan and the protective shell are arranged on the end face of the base, a cavity is formed between the protective shell and the base, and the first extrusion assembly and the fan are located in the cavity.
In a second aspect, the present application provides a printing apparatus, including the above multi-nozzle extrusion device.
In the embodiment of the application, because the first spray head assembly and the second spray head assembly in the multi-spray-head extrusion device are simultaneously arranged on one heating assembly, and the second spray head assembly is movably connected with the threaded hole in the heating assembly through the fixing piece, therefore, the distance between the first nozzle in the first spray head assembly and the second nozzle in the second spray head assembly is very close, the height adjustment of the second nozzle can be realized, the multi-spray-head extrusion device can simultaneously take the production cost and the printing precision into account, and the printing precision is improved while the production cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a multi-nozzle extrusion apparatus according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a second nozzle assembly of a multi-nozzle extrusion apparatus according to an embodiment of the present application;
FIG. 3 is a schematic view of another configuration of a multi-nozzle extrusion apparatus according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of the multi-nozzle extrusion apparatus shown in FIG. 3;
fig. 5 is a schematic view of still another structure of the multi-nozzle extrusion apparatus according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a multi-nozzle extrusion device according to an embodiment of the present application. This many shower nozzles extrusion device includes: a first showerhead assembly (not shown), a second showerhead assembly (not shown), and a heating assembly 200; the first spray head assembly comprises a first spray nozzle 101 and a first throat 102, the second spray head assembly comprises a second spray nozzle 103, a second throat 104 and a fixing piece 105, a first threaded hole (not shown) and a second threaded hole (not shown) which are communicated are formed in the heating assembly 200, and the first spray nozzle 101 and the first throat 102 are fixedly connected with the heating assembly 200 through the first threaded hole; the second nozzle 103 and the second throat 104 are fixedly connected to the fixing member 105, and the fixing member 105 is connected to the heating assembly 200 through the second threaded hole.
It should be noted that the first nozzle assembly includes a first nozzle 101 and a first throat 102, the first nozzle 101 and the first throat 102 are both provided with threads in the circumferential direction, the first nozzle 101 and the first throat 102 respectively enter from two ends of the first threaded hole in a rotating manner, and are respectively engaged and fixed with the threads in the first threaded hole through the threads of the first nozzle 101 and the first throat 102. The second nozzle assembly includes a second nozzle 103, a second throat 104 and a fixing member 105, referring to fig. 2, fig. 2 is a schematic structural diagram of the second nozzle assembly of the multi-nozzle extrusion apparatus according to the embodiment of the present disclosure. In fig. 2, the second nozzle 103 and the second throat 104 are respectively inserted from both ends of the fixing member 105 and fixed by high temperature glue, and after the fixing, the second nozzle 103 and the second throat 104 are connected with the thread of the second threaded hole by the external thread on the circumference of the fixing member 105, so that the height of the second nozzle 103 can be adjusted by rotating the fixing member 105, and the height of the second nozzle 103 is flush with that of the first nozzle 101. In another embodiment, the second nozzle 103 and the second throat 104 may be fixedly connected to the fixing member 105 through threads, and specifically, the second nozzle 103 and the second throat 104 are both provided with threads in the circumferential direction, and the second nozzle 103 and the second throat 104 respectively enter from both ends of the fixing member 105 by rotating and are respectively engaged and fixed with the threads in the fixing member 105 through the threads of the second nozzle 103 and the second throat 104.
The heating element 200 may be regular or irregular in shape, and in one embodiment, the heating element 200 is regular in shape to ensure that the first nozzle 101 and the second nozzle 103 are uniformly stressed when they eject the hot melt material. This first shower nozzle subassembly sets up in the first screw hole of heating element 200, and the second shower nozzle subassembly sets up in the second screw hole of heating element 200 for the hot melt material in heating first shower nozzle subassembly and the second shower nozzle subassembly only need a heating element 200 can, has practiced thrift manufacturing cost from this. Meanwhile, the structure also reduces the distance between the first nozzle 101 and the second nozzle 103, so that the printing precision is improved, and the situation that the difference between the maximum area of the actually printed model and the maximum printable area of the printer is far because the distance between the spray heads is too wide is avoided.
Optionally, the fixing member 105 is a nut, a half thread is circumferentially provided on the nut, and the nut is rotationally fixed with the internal thread of the second threaded hole through the half thread.
The nut can be made of any material with good heat conductivity, such as copper, silver, gold, aluminum, alloy and the like, and the utility model is not limited in particular. In one embodiment, the nut is circumferentially provided with a half thread, and the nut is rotatably fixed with the internal thread of the second threaded hole through the half thread. In another embodiment, the nut is circumferentially provided with a full thread, by which the nut is rotatably fixed with the internal thread of the second threaded bore. Of course, the fixing member 105 may also be a buckle or other fixing structure, and the present invention is not limited in particular.
Referring to fig. 3 and 4, fig. 3 is a schematic view of another structure of a multi-nozzle extrusion apparatus according to an embodiment of the present application, fig. 4 is a sectional view of the multi-nozzle extrusion apparatus shown in fig. 3, and in particular, fig. 4 is a sectional view of a perspective view shown in fig. 3 along sectional lines a and a'. The heating assembly 200 comprises a first top thread 106, and the first top thread 106 is arranged at the side of the second threaded hole. Because the first jackscrew 106 is arranged on the side surface of the second threaded hole and is vertical to the length direction of the second throat 104, when the first jackscrew 106 is screwed to the position of the second throat 104, the second throat 104 is acted by the first jackscrew 106, so that the second throat 104 cannot shake in the horizontal direction, the stability of the second nozzle 103 is improved, and the printing precision is further improved.
Optionally, the multi-nozzle extrusion apparatus in the present application further includes: heat sink assembly 300 and first extrusion assembly 500; the heat dissipation assembly 300 is fixedly connected with the first extrusion assembly 500 through a bolt 400, a first through hole and a second through hole which are through are formed in the heat dissipation assembly 300, the first throat 102 penetrates through the first through hole, the second throat 104 penetrates through the second through hole, and the first throat 102 is fixedly connected with the heat dissipation assembly 300 through a second jackscrew 107 on the heat dissipation assembly 300.
In an embodiment, the heat dissipation assembly 300 and the first extrusion assembly 500 are fixedly connected by a bolt 400, and the number of the bolts 400 may be one or more, and the position of the bolt 400 is not specifically limited herein. The first throat pipe 102 penetrates through the first through hole of the heat dissipation assembly 300, and the second throat pipe 104 penetrates through the second through hole of the heat dissipation assembly 300, so that the compactness of the internal structure of the multi-nozzle extrusion device is improved, and the heat dissipation assembly 300 is also favorable for dissipating heat of surrounding parts needing heat dissipation.
Optionally, the second jackscrew 107 is disposed on a side surface of the first through hole. Because the second jackscrew 107 is arranged on the side surface of the first through hole and is vertical to the length direction of the first throat pipe 102, when the second jackscrew 107 is screwed to the position of the first throat pipe 102, the first throat pipe 102 is acted by the second jackscrew 107, so that the first throat pipe 102 cannot shake in the horizontal direction, the stability of the first nozzle 101 is improved, and the printing precision is further improved.
Optionally, the first spray head assembly further comprises a first hose 108 and a first connector 110, and the second spray head assembly further comprises a second hose 109 and a second connector 111; the first throat pipe 102 is fixedly connected to a first end of the first joint 110 through the first hose 108, the second throat pipe 104 is fixedly connected to a first end of the second joint 111 through the second hose 109, and the first joint 110 and the second joint 111 are disposed in parallel on an end surface of the first extrusion assembly 500.
It should be noted that the first hose 108 and the second hose 109 may be teflon tubes or other anti-adhesive hoses for transporting hot melt materials. The first joint 110 and the second joint 111 may be quick joints or common joints, and are used for extending the first hose 108 and the second hose 109, so as to facilitate connection to an extruder or a detection device, and enable feeding and detection of the hot melt material in the first nozzle assembly and the second nozzle assembly.
Further, the first extrusion assembly 500 comprises a first guide wheel 501 and a first extrusion wheel 502 which are engaged with each other, and the first hose 108 is arranged between the first guide wheel 501 and the first extrusion wheel 502; the device further comprises: a second extrusion assembly 600, the second extrusion assembly 600 being disposed separately from the first extrusion assembly 500.
In one embodiment, the multi-nozzle extrusion device comprises a first extrusion assembly 500 and a second extrusion assembly 600 which are separately arranged, hot melt material is provided to a first nozzle 101 through the first extrusion assembly 500, hot melt material is provided to a second nozzle 103 through the second extrusion assembly 600, so that two nozzles are separately fed, and different hot melt materials are arranged to realize a nozzle printing model and a nozzle printing soluble support structure; or one nozzle may print one color and the other nozzle another color. Meanwhile, as the first extrusion assembly 500 and the second extrusion assembly 600 are separately arranged and not adjacently arranged together, the distance between the first nozzle 101 and the second nozzle 103 is not limited by the assembly arrangement of the first extrusion assembly 500 and the second extrusion assembly 600, the first nozzle 101 and the second nozzle 103 can be arranged very close, thereby improving the printing efficiency of the multi-nozzle extrusion device.
Referring to fig. 5, fig. 5 is a schematic structural diagram of another multi-nozzle extrusion apparatus according to an embodiment of the present application. The first nozzle assembly further comprises a third hose 120 and a first material breakage detection device 121, and the second nozzle assembly further comprises a fourth hose 122, a fifth hose 123 and a second material breakage detection device 124; the second end of the first joint 110 is connected with the first end of the third hose 120, the second end of the second joint 111 is connected with the first end of the fourth hose 122, the second end of the third hose 120 is fixedly connected with the first material breakage detection device 121, the second end of the fourth hose 122 is fixedly connected with the second extrusion assembly 600, the second extrusion assembly 600 is connected with the second material breakage detection device 124 through the fifth hose 123, the second extrusion assembly 600 comprises a second guide wheel and a second extrusion wheel which are meshed with each other, and the fifth hose 123 is arranged between the second guide wheel and the second extrusion wheel.
In an embodiment, the first joint 110 and the second joint 111 connect a plurality of lengths of flexible pipes to realize that the first material breakage detecting device 121 and the second material breakage detecting device 124 at the distal ends detect the hot melting material in the first nozzle assembly and the second nozzle assembly, and at the same time, the first extruding assembly 500 and the second extruding assembly 600 are separately arranged, and the first extruding assembly 500 and the second extruding assembly 600 can be separately arranged to a required distance according to actual needs.
Optionally, the multi-nozzle extrusion device further comprises a base 700, a protective shell 800 and a fan 900; the fan 900 and the protective shell 800 are disposed on an end surface of the base 700, the protective shell 800 and the base 700 form a cavity, and the first extrusion assembly 500 and the fan 900 are located in the cavity.
The protective case 800 is used to protect the first extrusion assembly 500, improving the safety factor of the multi-nozzle extrusion device. One or more fans 900 may be provided. In one embodiment, there are two fans 900 for dissipating heat from the printed pattern and the heat sink assembly 300, respectively.
The embodiment of the application also provides printing equipment which comprises the multi-nozzle extrusion device. The specific embodiment of the printing apparatus is the same as the above-mentioned multi-nozzle extrusion device, and is not described herein again.
The embodiments described above are described with reference to the drawings, and various other forms and embodiments are possible without departing from the principles of the present invention, and therefore, the present invention should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of components may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, components, and/or groups thereof. Unless otherwise indicated, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (10)
1. A multi-nozzle extrusion apparatus, comprising: the first spray head assembly, the second spray head assembly and the heating assembly;
the first spray head assembly comprises a first spray nozzle and a first throat pipe, the second spray head assembly comprises a second spray nozzle, a second throat pipe and a fixing piece, a first threaded hole and a second threaded hole which are communicated are formed in the heating assembly, and the first spray nozzle and the first throat pipe are fixedly connected with the heating assembly through the first threaded hole; the second nozzle and the second throat pipe are respectively and fixedly connected with the fixing piece, and the fixing piece is connected with the heating assembly through the second threaded hole.
2. The multi-nozzle extrusion device of claim 1, wherein the fixing member is a nut, a half thread is circumferentially arranged on the nut, and the nut is rotationally fixed with the internal thread of the second threaded hole through the half thread.
3. The multi-nozzle extrusion apparatus of claim 1 wherein the heating assembly comprises a first jackscrew disposed laterally of the second threaded bore.
4. The multi-nozzle extrusion apparatus of claim 1, further comprising: a heat dissipation assembly and a first extrusion assembly;
the heat dissipation assembly is fixedly connected with the first extrusion assembly through a bolt, a first through hole and a second through hole which are communicated with each other are formed in the heat dissipation assembly, the first throat pipe penetrates through the first through hole, the second throat pipe penetrates through the second through hole, and the first throat pipe is fixedly connected with the heat dissipation assembly through a second jackscrew on the heat dissipation assembly.
5. The multi-nozzle extrusion apparatus of claim 4, wherein the second jackscrew is disposed at a side of the first through hole.
6. The multi-nozzle extrusion apparatus of claim 4, wherein the first nozzle assembly further comprises a first hose and a first fitting, and the second nozzle assembly further comprises a second hose and a second fitting;
the first throat pipe is fixedly connected with the first end of the first joint through the first hose, the second throat pipe is fixedly connected with the first end of the second joint through the second hose, and the first joint and the second joint are arranged on the end face of the first extrusion assembly in parallel.
7. The multi-nozzle extrusion apparatus of claim 6, wherein the first extrusion assembly comprises a first guide wheel and a first extrusion wheel that are intermeshed, the first hose being disposed between the first guide wheel and the first extrusion wheel; the device further comprises: a second extrusion assembly disposed separately from the first extrusion assembly.
8. The multi-nozzle extrusion apparatus of claim 7, wherein the first nozzle assembly further comprises a third hose and a first material break detection device, and the second nozzle assembly further comprises a fourth hose, a fifth hose, and a second material break detection device;
the second end of first joint with the first end of third hose is connected, the second joint second end is connected with the first end of fourth hose, the second end of third hose with first disconnected material detection device fixed connection, the second end of fourth hose with subassembly fixed connection is extruded to the second, the subassembly is extruded to the second passes through the fifth hose with the disconnected material detection device fixed connection of second, wherein, the subassembly is extruded to the second includes that intermeshing's second leading wheel and second extrude the wheel, the fifth hose set up in the second leading wheel with the second is extruded between the wheel.
9. The multi-nozzle extrusion apparatus of claim 4, wherein the apparatus further comprises a base, a protective casing, and a fan;
the fan and the protective shell are arranged on the end face of the base, a cavity is formed between the protective shell and the base, and the first extrusion assembly and the fan are located in the cavity.
10. A printing apparatus comprising a multi-nozzle extrusion device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021347203.5U CN212795900U (en) | 2020-07-10 | 2020-07-10 | Multi-nozzle extrusion device and printing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021347203.5U CN212795900U (en) | 2020-07-10 | 2020-07-10 | Multi-nozzle extrusion device and printing equipment |
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| CN212795900U true CN212795900U (en) | 2021-03-26 |
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| CN202021347203.5U Active CN212795900U (en) | 2020-07-10 | 2020-07-10 | Multi-nozzle extrusion device and printing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787712A (en) * | 2021-11-01 | 2021-12-14 | 辽宁工程技术大学 | Split type FDM type 3D printer nozzle system |
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2020
- 2020-07-10 CN CN202021347203.5U patent/CN212795900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787712A (en) * | 2021-11-01 | 2021-12-14 | 辽宁工程技术大学 | Split type FDM type 3D printer nozzle system |
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