3D direct-writing printing multifunctional spray head device with positioning function

Abstract

The utility model relates to a 3D direct writing printing multifunctional nozzle device with a positioning function, which comprises a shell, an extrusion screw rod, a driving unit and a connecting assembly, the middle part in the shell is provided with a containing cavity, the top of the shell is provided with a feeding hole, the bottom of the shell is provided with a nozzle, and the feeding hole and the nozzle are both communicated with the containing cavity; the extrusion screw rod is mounted in the accommodating cavity; the driving unit is used for driving the extrusion screw to rotate in the accommodating cavity; the connecting assembly comprises an inner connector, an outer rotating connector and fasteners, the driving unit is connected with the extrusion screw through the inner connector, the outer rotating connector is arranged outside the inner connector in a sleeving mode, and the two ends of the outer rotating connector are connected with the top of the shell and a bearing seat of the driving unit through the fasteners respectively. According to the technical scheme, the inner connector is further sleeved with the outer rotating connector, connection between the shell and the driving unit is enhanced through cooperation of the outer rotating connector and the fastener, and therefore the situation that the connection strength of the inner connector is not enough is avoided.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing nozzles, and in particular to a multi-functional nozzle device for 3D direct writing printing with positioning function. Background Technology

[0002] 3D direct ink writing (DIW) is an additive manufacturing technology that builds three-dimensional structures layer by layer by precisely controlling the extrusion and deposition of highly viscoelastic materials. Its core feature is the direct writing and shaping of functional "inks" (such as ceramic slurries, hydrogels, conductive materials, etc.) without the need for external forces such as photopolymerization or high-temperature sintering, making it suitable for complex geometries and multi-material integration.

[0003] Existing 3D direct-write printing nozzle devices generally only connect the drive unit and the extrusion screw through a connector. The connection between the drive unit and the housing is not strong enough, and the connector is prone to loosening after long-term use. Utility Model Content

[0004] In view of the above problems, this application provides a 3D direct writing printing multifunctional nozzle device with positioning function to solve the technical problem that the connection between the drive unit and the housing is not firm enough and the connector is prone to loosening after long-term use, which is caused by connecting the drive unit and the extrusion screw only through the connector.

[0005] To achieve the above objectives, the inventors provide a multi-functional 3D direct-write printing nozzle device with positioning function, comprising:

[0006] The outer shell has a receiving cavity in the middle of its interior, a feed inlet is provided at the top of the outer shell, and a nozzle is provided at the bottom of the outer shell. Both the feed inlet and the nozzle are connected to the receiving cavity.

[0007] An extrusion screw is installed inside the receiving cavity;

[0008] The drive unit is used to drive the extrusion screw to rotate within the receiving cavity;

[0009] The connecting assembly includes an inner connector, an outer rotary joint, and fasteners. The drive unit is connected to the extrusion screw through the inner connector. The outer rotary joint is sleeved outside the inner connector, and both ends of the outer rotary joint are connected to the top of the housing and the bearing seat of the drive unit, respectively, through fasteners.

[0010] Unlike existing technologies, the technical solution of this application also includes an external rotary joint outside the inner connector. The connection between the outer shell and the drive unit is strengthened by the cooperation of the external rotary joint and fasteners, thereby avoiding insufficient connection strength of the inner connector.

[0011] As one embodiment of this utility model, the outer rotary joint includes a sleeve and two positioning blades respectively installed at both ends of the sleeve. The sleeve is sleeved outside the inner connector. The positioning blades include two or more sets of positioning components. The positioning components include a first hole and a second hole connected to the first hole. The second hole is opened around the circumference of the positioning blade and is an arc-shaped hole. The rotating sleeve is used to position the fastener in the second hole.

[0012] Thus, by using two or more sets of positioning components on the positioning blades to position the fasteners, the stability and firmness of the fastener connection are ensured, while also facilitating further adjustment of the fastener tightness after connection, resulting in higher control over the connection precision. Specifically, the first hole is used for inserting the fastener. After the fastener is connected to the housing and drive unit, the sleeve is rotated to allow the fastener to be inserted into the second hole along the arc-shaped hole.

[0013] As one embodiment of this utility model, the positioning component further includes a positioning spring, which is installed in the second hole and is used to fix the fastener in the second hole.

[0014] In this way, by setting a positioning spring, the fastener is fixed in the second hole, that is, the second hole is on the side away from the first hole, which restricts the position of the second hole and prevents the fastener from being displaced.

[0015] In one embodiment of this utility model, the first hole is an open hole that is connected to the outside.

[0016] Thus, the first hole is an open hole, which makes it easier to insert the fastener and allows the position of the fastener to be adjusted according to the actual situation.

[0017] As one embodiment of this utility model, four sets of positioning components are evenly distributed around the circumference of the positioning blade.

[0018] Thus, multiple sets of positioning components are provided to cooperate with multiple fasteners, with one fastener corresponding to one set of positioning components. The use of multiple positioning components can further strengthen the connection between the housing and the drive unit.

[0019] In one embodiment of this utility model, the positioning blade is a transparent blade.

[0020] Therefore, by setting the positioning blade to be transparent, users can easily observe the location of the fastener and adjust it according to the actual situation.

[0021] In one embodiment of this utility model, the fastener is a bolt, stud, or screw.

[0022] Thus, the fastener structure is simple and easy to install and disassemble.

[0023] As one embodiment of this utility model, the top of the outer shell has two or more feed ports evenly distributed around its circumference.

[0024] In this way, with two or more feed ports, each feed port can accept different materials, ensuring that multiple materials can enter the inner cavity at the same time for mixing, resulting in a better mixing effect.

[0025] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0026] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0027] In the accompanying drawings of the instruction manual:

[0028] Figure 1 This is a schematic diagram of a multi-functional 3D direct-write printing nozzle device with positioning function according to an embodiment of this application;

[0029] Figure 2 This is a front view of a 3D direct-write printing multi-functional nozzle device with positioning function according to an embodiment of this application;

[0030] Figure 3 for Figure 2 Sectional view of AA;

[0031] Figure 4 for Figure 3 Enlarged view of B in the middle;

[0032] Figure 5 This is a schematic diagram of the structure of an external rotary joint according to an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the positioning blade according to an embodiment of this application.

[0034] The reference numerals used in the above figures are explained as follows:

[0035] 100 - 3D direct-write printing multi-functional nozzle device with positioning function; 1 - Housing; 11 - Receiving cavity; 12 - Feed port; 13 - Nozzle; 2 - Extrusion screw; 3 - Drive unit; 4 - Connecting assembly; 41 - Inner connector; 42 - Outer rotary joint; 421 - Sleeve; 422 - Positioning blade; 423 - Positioning assembly; 4231 - First hole; 4232 - Second hole; 4233 - Positioning spring; 43 - Fastener. Detailed Implementation

[0036] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0037] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0038] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0039] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0040] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0041] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0042] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0043] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0044] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0045] According to some embodiments of this application, please refer to Figures 1 to 6This embodiment relates to a 3D direct-write printing multifunctional nozzle device 100 with positioning function, including a housing 1, an extrusion screw 2, a drive unit 3, and a connecting assembly 4. The housing 1 has a receiving cavity 11 in the middle, a feed port 12 is opened on the top of the housing 1, and a nozzle 13 is provided on the bottom of the housing 1. The feed port 12 and the nozzle 13 are both connected to the receiving cavity 11. The extrusion screw 2 is installed in the receiving cavity 11. The drive unit 3 is used to drive the extrusion screw 2 to rotate in the receiving cavity 11. The connecting assembly 4 includes an inner connector 41, an outer rotary joint 42, and fasteners 43. The drive unit 3 is connected to the extrusion screw 2 through the inner connector 41. The outer rotary joint 42 is sleeved on the inner connector 41. The two ends of the outer rotary joint 42 are connected to the top of the housing 1 and the bearing seat of the drive unit 3 respectively through the fasteners 43.

[0046] The extrusion screw 2 can be made of non-metallic materials, such as PA, PP, or ABS, which increases the lifespan of the extrusion screw 2 and reduces usage and maintenance costs.

[0047] The drive unit 3 can be a power source such as an electric motor or motor to drive the extrusion screw 2 to rotate inside the cavity.

[0048] The inner connector 41 can be an existing coupling, and the inner connector 41 connects the output shaft of the drive unit 3 and the top of the extrusion screw 2.

[0049] In actual connection, firstly, the inner connector 41 is connected to the drive unit 3 and the extrusion screw 2; secondly, the outer rotary connector 42 is sleeved on the inner connector 41, and the outer rotary connector 42 is connected to the bearing seat of the drive unit 3 through the fastener 43; then the outer shell 1 is sleeved on the extrusion screw 2, and the outer rotary connector 42 is connected to the top of the outer shell 1 through the fastener 43; finally, the tightness is adjusted by hand-tightening the fastener 43 to control the connection accuracy.

[0050] The technical solution of this application also includes an outer rotary joint 42 fitted outside the inner connector 41. The outer rotary joint 42 and the fastener 43 work together to strengthen the connection between the outer shell 1 and the drive unit 3, thereby avoiding insufficient connection strength of the inner connector 41.

[0051] According to some embodiments of this application, optionally, such as Figure 5 and Figure 6 As shown, the outer rotary joint 42 includes a sleeve 421 and two positioning blades 422 respectively installed at both ends of the sleeve 421. The sleeve 421 is sleeved on the outer side of the inner connector 41. The positioning blades 422 include two or more positioning components 423. The positioning components 423 include a first hole 4231 and a second hole 4232 connected to the first hole 4231. The second hole 4232 is opened around the circumference of the positioning blades 422 and is an arc-shaped hole. The rotating sleeve 421 is used to position the fastener 43 in the second hole 4232.

[0052] Thus, by using two or more sets of positioning components 423 on the positioning blade 422 to position the fastener 43, the stability and firmness of the fastener 43 connection are ensured, while also facilitating further adjustment of the tightness of the fastener 43 after connection, resulting in higher control of connection precision. Specifically, the first hole 4231 is used for inserting the fastener 43. After the fastener 43 is connected to the housing 1 and the drive unit 3, the sleeve 421 is rotated to allow the fastener 43 to be inserted into the second hole 4232 along the arc-shaped hole.

[0053] According to some embodiments of this application, optionally, such as Figure 5 and Figure 6 As shown, the positioning component 423 also includes a positioning spring 4233, which is installed in the second hole 4232 and is used to fix the fastener 43 in the second hole 4232.

[0054] Thus, by setting the positioning spring 4233, the fastener 43 is fixed in the second hole 4232, that is, the second hole 4232 is on the side away from the first hole 4231, which restricts the position of the second hole 4232 and prevents the fastener 43 from being displaced.

[0055] According to some embodiments of this application, optionally, such as Figure 5 and Figure 6 As shown, the first hole 4231 is an opening, and the first hole 4231 is connected to the outside.

[0056] Thus, the first hole 4231 is an opening, which makes it easier to insert the fastener 43 and allows the position of the fastener 43 to be adjusted according to the actual situation.

[0057] According to some embodiments of this application, optionally, such as Figure 5 and Figure 6 As shown, four sets of positioning components 423 are evenly distributed around the positioning blade 422.

[0058] Thus, multiple sets of positioning components 423 are provided to cooperate with multiple fasteners 43, with one fastener 43 corresponding to one set of positioning components 423. Providing multiple positioning components 423 can further strengthen the connection between the housing 1 and the drive unit 3. In some embodiments, the positioning blade 422 may also have three or five sets of positioning components 423 evenly distributed around its circumference.

[0059] According to some embodiments of this application, optionally, the positioning blade 422 is a transparent blade.

[0060] Therefore, the positioning blade 422 is set as a transparent blade, that is, the positioning blade 422 is made of transparent material, such as transparent plastic or transparent resin. The transparent material makes it convenient for users to observe the position of the fastener 43, so as to adjust it according to the actual situation.

[0061] According to some embodiments of this application, the fastener 43 may optionally be a bolt, stud, or screw.

[0062] Thus, fastener 43 has a simple structure and is easy to install and remove.

[0063] According to some embodiments of this application, optionally, such as Figures 1 to 3 As shown, the top of the outer shell 1 has two or more feed ports 12 evenly distributed around its circumference.

[0064] Thus, with two or more feed inlets 12, each feed inlet 12 can accept different materials, ensuring that multiple materials can simultaneously enter the inner cavity for mixing, resulting in better mixing. In some embodiments, the outer shell 1 further includes a feed channel, through which the feed inlets 12 and the receiving cavity 11 are connected. The number of feed channels corresponds to the number of feed inlets 12, ensuring the individuality of each material while allowing each material to enter the receiving cavity 11 for mixing via the feed channel. In other embodiments, the feed inlets 12 are also connected to the outside via a hose connector, allowing materials to connect to the feed channel via the hose connector.

[0065] The technical solution of this application also includes an outer rotary joint 42 fitted outside the inner connector 41. The outer rotary joint 42 and the fastener 43 work together to strengthen the connection between the outer shell 1 and the drive unit 3, thereby avoiding insufficient connection strength of the inner connector 41.

[0066] In this embodiment, the power mechanism or power unit includes, but is not limited to, engines, motors, pneumatic tools, hydraulic pumps, etc. The power unit also includes direct power sources and indirect power sources. Direct power sources are those that can provide their own power, such as engines and motors, while indirect power sources include cylinders and hydraulic cylinders. The power mechanism or power unit can drive the linear reciprocating motion of the actuator through gear and rack engagement, slider and groove engagement, lead screw and nut engagement, etc.

[0067] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A 3D direct writing printing multifunctional nozzle device with positioning function, characterized in that, The utility model relates to a kind of extrusion machine, including: Housing, the middle part of the housing has accommodating cavity, the top of the housing is provided with feed inlet, the bottom of the housing is provided with nozzle, the feed inlet and the nozzle are communicated with the accommodating cavity; Extrusion screw, the extrusion screw is installed in the accommodating cavity; Driving unit, the driving unit is used to drive the extrusion screw rotates in the accommodating cavity; Connecting assembly, the connecting assembly includes inner connector, outer swivel joint and fastener, the driving unit is connected with the extrusion screw by the inner connector, the outer swivel joint is sleeved outside the inner connector, both ends of the outer swivel joint are connected with the top of the housing and the bearing seat of the driving unit respectively by the fastener.

2. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 1, characterized in that, The outer swivel joint includes sleeve and two positioning blades installed at both ends of the sleeve respectively, the sleeve is sleeved outside the inner connector, the positioning blade includes more than two positioning assemblies, the positioning assembly includes first hole and second hole communicated with the first hole, the second hole is opened around the circumference of the positioning blade, the second hole is arc hole, rotating the sleeve is used to make the second hole positioning fastener.

3. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 2, characterized in that, The positioning assembly further includes positioning spring, the positioning spring is installed in the second hole, and the positioning spring is used to fix the fastener in the second hole.

4. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 2, characterized in that, The first hole is aperture, and the first hole is communicated with the outside.

5. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 2, characterized in that, The positioning blade is uniformly provided with four positioning assemblies around its circumference.

6. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 2, characterized in that, The positioning blade is transparent blade.

7. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 1, characterized in that, The fastener is bolt or stud or screw.

8. The 3D direct writing printing multi-functional nozzle device with positioning function according to claim 1, characterized in that, The top of the housing is uniformly provided with more than two feed inlets around its circumference.

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