Combined nozzle and printing equipment

Abstract

The utility model discloses a combined nozzle and printing equipment. The combined nozzle comprises a plurality of nozzle assemblies, a heating assembly and a heat dissipation assembly. The multiple nozzle assemblies extend in the first direction, the heating assembly and the heat dissipation assembly are arranged at intervals in the first direction and fixedly connected, and the periphery of the multiple nozzle assemblies is sleeved with the heating assembly and the heat dissipation assembly. The nozzle assembly is configured to have a first state in contact with the heating assembly and the heat dissipation assembly and a second state in separation from the heating assembly and the heat dissipation assembly. When the nozzle assembly is in the first state, the nozzle assembly makes contact with the heating assembly and the heat dissipation assembly at the same time, the heating assembly heats the nozzle assembly, the heat dissipation assembly dissipates heat of the nozzle assembly, and the operation efficiency of the combined nozzle is improved. And meanwhile, only one heating assembly and one heat dissipation assembly are arranged for heating and heat dissipation of the multiple nozzle assemblies, the size of the combined nozzle is reduced while operation of the multiple nozzle assemblies is achieved, the structure is simple, and the stability of the combined nozzle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of multi-color printing, and in particular to a combined nozzle and printing equipment. Background Art

[0002] With the development of the 3D printing industry, traditional monochrome printing technology can no longer meet the producers' printing needs for printed products and the users' needs for the aesthetics of goods. The producers and users have an increasing demand for multi-color printing technology.

[0003] In the multi-input and multi-output method of multi-color printing technology, that is, multiple nozzles are used for printing operations, one color of consumables corresponds to one nozzle. Since multiple nozzles are involved in the operation, multiple sets of heaters and radiators are required to heat or dissipate the nozzles, resulting in a larger volume of the entire nozzle module, high cost, complex structure, and low stability. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a combined nozzle. The combined nozzle comprises:

[0005] A heat dissipation assembly, a heating assembly, and a plurality of nozzle assemblies;

[0006] The nozzle assembly extends along a first direction, and the nozzle assembly is used to convey the consumable material and extrude the consumable material;

[0007] The heating assembly and the heat dissipation assembly are spaced apart and fixedly connected along the first direction, and the heating assembly and the heat dissipation assembly are sleeved on the outer periphery of the plurality of nozzle assemblies;

[0008] The nozzle assembly is configured to have a first state in which the nozzle assembly is in contact with the heating assembly and the heat dissipation assembly, and a second state in which the nozzle assembly is separated from the heating assembly and the heat dissipation assembly.

[0009] Wherein, the nozzle assembly includes a nozzle, a throat and at least one positioning member;

[0010] The nozzle is connected to one end of the throat and is located on a side of the heating component away from the heat dissipation component;

[0011] The other end of the throat is located at a side of the heat dissipation component away from the heating component, and the throat is used to transport consumables;

[0012] The positioning member is arranged around the outer circumference of the throat, and when the nozzle assembly is in the first state, the positioning member is in contact with the heat dissipation assembly and / or the heating assembly.

[0013] Wherein, the nozzle assembly includes a first positioning member and a second positioning member, the first positioning member and the second positioning member are arranged on the throat at intervals along the first direction, the first positioning member is arranged close to the nozzle relative to the second positioning member, and when the nozzle assembly is in the first state, the first positioning member is in contact with the heating assembly, and the second positioning member is in contact with the heat dissipation assembly.

[0014] Wherein, the radial cross-sectional area of ​​the end of the first positioning member close to the nozzle is smaller than the radial cross-sectional area of ​​the end of the first positioning member away from the nozzle;

[0015] The radial cross-sectional area of ​​the second positioning member at one end close to the first positioning member is smaller than the radial cross-sectional area of ​​the second positioning member at one end away from the first positioning member.

[0016] Wherein, the heating assembly includes a heating block, and the heating block is provided with a plurality of first placement through holes; the radial cross-sectional area of ​​the first end of the first placement through hole is smaller than the radial cross-sectional area of ​​the second end of the first placement through hole, the first end of the first placement through hole is arranged close to the nozzle, and the second end of the first placement through hole is arranged away from the nozzle; when the nozzle assembly is in the first state, the nozzle assembly is in contact with the hole wall of the first placement through hole.

[0017] Wherein, at least a portion of the first positioning member is located in the first placement through hole, and when the nozzle assembly is in the first state, the first positioning member is in contact with the hole wall of the first placement through hole.

[0018] Wherein, the distance between the end of the first positioning member away from the nozzle and the nozzle is greater than the length of the first placement through hole.

[0019] Wherein, the heat dissipation assembly comprises a heat dissipation block, and the heat dissipation block has a plurality of second placement through holes; the radial cross-sectional area of ​​the first end of the second placement through hole close to the heating block is smaller than the radial cross-sectional area of ​​the second end of the second placement through hole away from the heating block, the first end of the second placement through hole is arranged close to the heating block, and the second end of the second placement through hole is arranged away from the heating block;

[0020] At least a portion of the second positioning member is located in the second placement through hole; when the nozzle assembly is in the first state, the second positioning member is in contact with the hole wall of the second placement through hole.

[0021] Among them, the difference between the first distance and the second distance is within a preset range, wherein the first distance is the distance between an end of the first positioning member close to the second positioning member and an end of the second positioning member away from the first positioning member, and the second distance is the distance between the second end of the first placement through hole and the second end of the second placement through hole.

[0022] In order to solve the above technical problems, the present application also provides a printing device, comprising the combined nozzle and extrusion mechanism as described above, wherein the extrusion mechanism is connected to multiple nozzle assemblies in the combined nozzle, and the extrusion mechanism is used to drive the nozzle assembly to contact the heating assembly and the heat dissipation assembly so that the nozzle assembly is in a first state; or, the extrusion mechanism is used to drive the nozzle assembly to separate from the heating assembly and the heat dissipation assembly so that the nozzle assembly is in a second state.

[0023] Beneficial effects of the present application: Different from the prior art, the combined nozzle of the present application includes a heating component, a heat dissipation component and a plurality of nozzle components. The plurality of nozzle components extend along a first direction and are used to convey consumables for consumable extrusion. The heating component and the heat dissipation component are arranged at intervals and fixedly connected in a direction perpendicular to the first direction. The heating component and the heat dissipation component are sleeved on the periphery of the plurality of nozzle components. Among them, the nozzle component is configured to have a first state of contact with the heating component and the heat dissipation component, and a second state of separation from the heating component and the heat dissipation component. The nozzle component is in contact with the heating component and the heat dissipation component at the same time. The heating component is used to heat the nozzle component to heat the consumables and realize the printing function of the combined nozzle; the heat dissipation component is used to dissipate heat from the nozzle component to control the heating range of the consumables by the heating component. By only providing one heating component and one heat dissipation component to heat and dissipate heat to multiple nozzle components, the volume of the combined nozzle is reduced while realizing the operation of multiple nozzle components, the structure is simple, and the stability of the combined nozzle is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] in:

[0026] Figure 1 It is a structural schematic diagram of the first embodiment of the combined nozzle of the present application;

[0027] Figure 2 It is a structural schematic diagram of the second embodiment of the combined nozzle of the present application;

[0028] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the combined nozzle along the section line II'.

[0029] Figure numerals: combined nozzle 1; nozzle assembly 11; first nozzle assembly 111; second nozzle assembly 112; nozzle 113; throat 114; first positioning member 115; second positioning member 116; heating assembly 12; heating block 121; first placement through hole 1211; heating tube 122; thermistor 123; heat dissipation assembly 13; heat dissipation block 131; second placement through hole 1311; first direction X. DETAILED DESCRIPTION

[0030] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0031] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0032] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. In addition, "many" in this article means two or more than two. In addition, the term "at least one" in this article means any combination of at least two of any one or more of a plurality of, for example, including at least one of A, B, and C, and can mean including any one or more elements selected from the set consisting of A, B, and C. In addition, the terms "first", "second", and "third" in this application are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0034] See also Figure 1 , Figure 1 The combined nozzle 1 provided in the embodiment of the present application is applied to the field of 3D printing technology to print out printed products using a plurality of thread-bound consumables of different colors or different materials.

[0035] The combined nozzle 1 includes a plurality of nozzle assemblies 11 , a heating assembly 12 and a heat dissipation assembly 13 .

[0036] Each nozzle assembly 11 extends along a first direction X, and is used to convey consumables and extrude consumables for printing operations. The heating assembly 12 and the heat dissipation assembly 13 are spaced apart and fixedly connected along a direction perpendicular to the first direction X. Specifically, a gap is provided between the heating assembly 12 and the heat dissipation assembly 13 along the first direction, and the two are fixedly connected by step screws provided at the gap position. The heating assembly 12 and the heat dissipation assembly 13 are sleeved on the periphery of the plurality of nozzle assemblies 11, that is, at least a portion of each nozzle assembly 11 is provided inside the heating assembly 12 and the heat dissipation assembly 13. In one embodiment, the combined nozzle includes a heating assembly, a heat dissipation assembly, and a plurality of nozzle assemblies; in another embodiment, the combined nozzle includes a plurality of heating assemblies, a plurality of heat dissipation assemblies, and a plurality of nozzle assemblies, wherein each heating assembly and each heat dissipation assembly corresponds to a plurality of nozzle assemblies.

[0037] The nozzle assembly 11 is configured to have a first state in contact with the heating assembly 12 and the heat dissipation assembly 13, and a second state separated from the heating assembly 12 and the heat dissipation assembly 13. The first state may be a working state of the nozzle assembly 11, and the second state may be an idle state of the nozzle assembly 11. When the nozzle assembly 11 is in the first state, the nozzle assembly 11 is in contact with the heating assembly 12 and the heat dissipation assembly 13, and the heating assembly 12 heats the consumables transported inside the nozzle assembly 11 to improve the efficiency of the consumables extrusion and the printing efficiency of the combined nozzle 1; the heat dissipation assembly 13 dissipates heat for the nozzle assembly 11 to avoid the accumulation of heat generated when the nozzle assembly 11 is running, which affects the running performance of the nozzle assembly 11 and improves the stability of the nozzle assembly 11.

[0038] In one embodiment, each nozzle assembly 11 in the multiple nozzle assemblies 11 can respectively convey consumables of different colors or different materials to enable each nozzle assembly 11 to print on one color or one material, thereby avoiding the need to clean the nozzle assembly 11 when changing the color or material when using the same nozzle assembly 11 for printing, thereby increasing the cost of consumables. The multiple nozzle assemblies 11 improve the operating efficiency of the combined nozzle 1, reduce the operating cost of the combined nozzle 1, and improve the user experience of the combined nozzle 1.

[0039] In summary, in the combination nozzle 1 of the present example, multiple nozzle assemblies 11 use only one heating assembly 12 and one heat dissipation assembly 13 for heating and heat dissipation. While realizing the operation of multiple nozzle assemblies 11 and improving the operation efficiency of the combination nozzle 1, the volume of the combination nozzle 1 is reduced, the structure is simple, and the stability of the combination nozzle 1 is improved.

[0040] When the nozzle assembly 11 is in the first state, the nozzle assembly 11 is in contact with the heating assembly 12 and the heat dissipation assembly 13 at the same time. The heating assembly 12 is used to heat the nozzle assembly 11, and the heat dissipation assembly 13 is used to dissipate heat from the nozzle assembly 11, thereby improving the printing efficiency of the combined nozzle 1.

[0041] Specifically, Figure 1 As shown, the combined nozzle 1 includes a first nozzle assembly 111 and a second nozzle assembly 112, wherein the first nozzle assembly 111 is the nozzle assembly 11 to be printed, and the second nozzle assembly 112 is the remaining nozzle assembly 11 among the plurality of nozzle assemblies 11. Figure 2 As shown, Figure 2 It is a structural schematic diagram of the second embodiment of the combined nozzle of the present application. The first nozzle assembly 111 is in contact with the heating assembly 12 and the heat dissipation assembly 13 and is in a first state; the second nozzle assembly 112 is separated from the heating assembly 12 and the heat dissipation assembly 13 and is in a second state.

[0042] After the combined nozzle 1 determines the first nozzle assembly 111 based on the printing requirements (required color, required material, etc.), the first nozzle assembly 111 can move along the first direction X, such as Figure 2 As shown, the first nozzle assembly 111 is in contact with the heating assembly 12 and the heat dissipation assembly 13 at the same time, and then the heating assembly 12 heats the first nozzle assembly 111, heats the consumables in the first nozzle assembly 111, and enables the first nozzle assembly 111 to print, thereby improving the printing efficiency of the first nozzle assembly 11. At the same time, the heat dissipation assembly 13 dissipates heat from the first nozzle assembly 111, thereby preventing the heat generated by the operation of the first nozzle assembly 111, or the heat transferred by the heating assembly 12 from being transferred to other devices connected to the first nozzle assembly 111 through the first nozzle assembly 111, thereby affecting the operating efficiency of the first nozzle assembly 111 and other devices, thereby improving the safety of the combined nozzle 1.

[0043] It can be understood that only the first nozzle assembly 111 that needs to perform printing operation is brought into contact with the heating assembly 12 and the heat dissipation assembly 13, the heating assembly 12 heats the first nozzle assembly 111, and the heat dissipation assembly 13 dissipates heat from the first nozzle assembly 111, thereby improving the printing efficiency of the first nozzle assembly 111. At the same time, the second nozzle assembly 112 that does not need to perform printing operation does not contact the heating assembly 12 and the heat dissipation assembly 13, thereby preventing the heating assembly 12 from heating the consumables in the second nozzle assembly 112. At the same time, the heating assembly 12 and the heat dissipation assembly 13 do not need to consume additional energy to heat and dissipate heat for the second nozzle assembly 112, thereby reducing the energy consumption of the heating assembly 12 and the heat dissipation assembly 13 and improving the operating efficiency of the heating assembly 12 and the heat dissipation assembly 13.

[0044] Optionally, see Figure 1 , Figure 2 and Figure 3 , Figure 3 yes Figure 1 The cross-sectional structure diagram of the combined nozzle along the section line II'. The nozzle assembly 11 includes a nozzle 113, a throat 114 and at least one positioning member.

[0045] The nozzle 113 is connected to one end of the throat 114 and is located on the side of the heating component 12 away from the heat dissipation component 13, and the other end of the throat 114 is located on the side of the heat dissipation component 13 away from the heating component 12, wherein the other end of the throat 114 can also be connected to the consumable supply component (not shown) to transport the consumables and transport the consumables to the nozzle 113.

[0046] The positioning member is disposed around the outer circumference of the throat 114 , and when the nozzle assembly 11 is in the first state, the positioning member is in contact with the heat dissipation assembly 13 and / or the heating assembly 12 .

[0047] Specifically, at least one positioning member of the nozzle assembly 11 may include a first positioning member 115 and a second positioning member 116, the first positioning member 115 and the second positioning member 116 are arranged on the throat 114 at intervals along the first direction X, and the first positioning member 115 is arranged close to the nozzle 113 relative to the second positioning member 116. In one embodiment, the first positioning member 115 can be arranged corresponding to the heating assembly 12, and the second positioning member 116 can be arranged corresponding to the heat dissipation assembly 13. When the combined nozzle 1 is to perform a printing operation, the nozzle assembly 11 can move downward along the first direction X until the first positioning member 115 contacts the heating assembly 12 and the second positioning member 116 contacts the heat dissipation assembly 13, and the nozzle assembly 11 is in the first state. When the first positioning member 115 moves to contact the heating component 12 and the second positioning member 116 moves to contact the heat dissipation component 13, it can be determined that the nozzle assembly 11 has moved into place. At this time, the heating component 12 can heat the consumables in the nozzle assembly 11, and the heated consumables are extruded through the nozzle 113 to perform a printing operation; the heat dissipation component 13 dissipates heat from the nozzle assembly 11.

[0048] In one embodiment, the radial cross-sectional area of ​​the first positioning member 115 at one end close to the nozzle is smaller than the radial cross-sectional area of ​​the first positioning member 115 at one end away from the nozzle 113, and the radial cross-sectional area of ​​the second positioning member 116 at one end close to the first positioning member 115 is smaller than the radial cross-sectional area of ​​the second positioning member 116 at one end away from the first positioning member 115.

[0049] Furthermore, when the nozzle assembly 11 moves along the first direction X, when the radial cross-sectional area of ​​the first positioning member 115 is smaller than the radial cross-sectional area of ​​the through hole through which the nozzle assembly 11 passes in the heating assembly 12, the nozzle assembly 11 can continue to move along the first direction X, and when the radial cross-sectional area of ​​the first positioning member 115 is equal to the radial cross-sectional area of ​​the through hole, the through hole clamps the first positioning member 115, and the nozzle assembly 11 cannot continue to move along the first direction X. It can be determined that the nozzle assembly 11 moves into place, realizing the positioning function of the first positioning member 115. The cooperation principle between the second positioning member 116 and the heat dissipation assembly 13 is the same as the cooperation principle between the first positioning member 115 and the heating assembly 12, so it will not be repeated here.

[0050] Among them, the first positioning member 115 and the second positioning member 116 can be an inverted cone, an inverted triangular pyramid, etc.; in other embodiments, the first positioning member 115 and the second positioning member 116 can also be other shapes with different radial cross-sectional areas at both ends; further, the shapes of the first positioning member 115 and the second positioning member 116 can also be different, for example, the first positioning member 115 is an inverted cylinder, and the second positioning member 116 is an inverted triangular pyramid, etc., and the present application does not impose any restrictions on this.

[0051] Optional, such as Figure 2 As shown, the heating assembly 12 includes a heating block 121, and the heating block 121 is provided with a plurality of first placement through holes 1211. The plurality of first placement through holes 1211 can be arranged along the periphery of the heating block 121, or along the printing path of the printed product, which is not limited in the present application.

[0052] The extension direction of each first placement through hole 1211 is parallel to the first direction X, wherein the radial cross-sectional area of ​​the first end of the first placement through hole 1211 is smaller than the radial cross-sectional area of ​​the second end of the first placement through hole 1211, wherein the first end of the first placement through hole 1211 is arranged close to the nozzle 113, and the second end of the first placement through hole 1211 is arranged away from the nozzle 113, and then when the combined nozzle 1 needs to perform a printing operation, the nozzle assembly 11 moves along the first direction X, and when the nozzle assembly 11 moves to the second end with a smaller radial cross-sectional area, due to the small radial cross-sectional area of ​​the second end, the nozzle assembly 11 will be stuck, and the nozzle assembly 11 cannot continue to move downward along the first direction X, thereby realizing the positioning of the nozzle assembly 11. At the same time, the first placement through hole 1211 blocks the nozzle assembly 11, that is, the nozzle assembly 11 contacts the hole wall of the first placement through hole 1211, and then the heating block 121 heats the nozzle assembly 11 through the hole wall of the first placement through hole 1211.

[0053] In one embodiment, at least a portion of the first positioning member 115 is located in the first placement through hole 1211, and when the nozzle assembly 11 moves, the first positioning member 115 is driven to move. The nozzle assembly 11 can be positioned and fixed by the cooperation between the first placement through hole 1211 and the first positioning member 115. When the first positioning member 115 contacts the hole wall of the first placement through hole 1211, the nozzle assembly 11 is in the first state, and the nozzle assembly 11 stops moving to prevent the nozzle assembly 11 from moving along the first direction X and disengaging from the first placement through hole 1211 and the heating block 121, thereby improving the safety of the nozzle assembly 11.

[0054] In one embodiment, if Figure 2 As shown, when the first positioning member 115 is an inverted cone, the first placement hole 1211 can also be an inverted cone shape, and the conical shape of the first positioning member 115 can be basically the same as the conical shape of the first placement hole 1211. For example, the height of the cone of the first positioning member 115 is basically the same as the height of the cone of the first placement hole 1211, the radial cross-sectional area of ​​the bottom of the cone of the first positioning member 115 is basically the same as the radial cross-sectional area of ​​the bottom of the cone of the first placement hole 1211, etc., and thus the first positioning member 115 can completely fit the hole wall of the first placement hole 1211, thereby improving the heat transfer efficiency of the heating block 121 and improving the heating efficiency of the heating component 12.

[0055] In other embodiments, when the first positioning member 115 is of other shapes and structures, the first placement hole 1211 may also be of a corresponding shape and structure to increase the contact area between the first positioning member 115 and the hole wall of the first placement hole 1211, thereby improving the heating efficiency of the heating component 12 on the nozzle component 11.

[0056] Optionally, the maximum cross-sectional area of ​​the nozzle 113 is larger than the radial cross-sectional area of ​​the first end of the first placement through hole 1211, and then after the nozzle assembly 11 has finished printing (the combined nozzle 1 is in a non-working state), the nozzle assembly 11 will not move excessively to cause the nozzle assembly 11 to be separated from the heating assembly 12 and the heat dissipation assembly 13 during the process of moving upward in the opposite direction of the first direction X to be separated from the state of contact with the heating assembly 12 and the heat dissipation assembly 13. The nozzle 113 limits the movement of the nozzle assembly 11. When the nozzle assembly 11 moves to the point where the maximum radial cross-sectional area of ​​the nozzle 113 contacts the first end of the first placement through hole 1211, since the maximum radial cross-sectional area of ​​the nozzle 113 is larger than the maximum radial cross-sectional area of ​​the first placement through hole 1211, the nozzle 113 cannot continue to enter the first placement through hole 1211, and the nozzle assembly 11 cannot continue to move upward in the opposite direction of the first direction X, thereby preventing the nozzle assembly 11 from excessively moving and being separated from the heating assembly 12 and the heat dissipation assembly 13, thereby improving the safety of the combined nozzle 1.

[0057] Alternatively, if Figure 3 As shown, the distance D1 between the end of the first positioning member 115 away from the nozzle 113 and the nozzle 113 is greater than the length of the first placement through hole 1211. Therefore, when the nozzle assembly 11 moves upward in the opposite direction of the first direction X, the first positioning member 115 can be separated from the state of contact with the hole wall of the first placement through hole 1211. In one embodiment, if the distance D1 between the end of the first positioning member 115 away from the nozzle 113 and the nozzle 113 is less than the length of the first placement through hole 1211, when the nozzle assembly 11 moves upward in the first direction X, the first positioning member 115 has not yet been separated from the hole wall of the first placement through hole 1211, and the nozzle 113 is in contact with the first end of the first placement through hole 1211, restricting the nozzle assembly 11 from continuing to move, and the heating block 121 continues to conduct heat to the first positioning member 115, consuming the consumables in the nozzle assembly 11 and increasing the energy consumption of the heating assembly 12. Therefore, this embodiment proposes that the distance D1 between the end of the first positioning member 115 away from the nozzle 113 and the nozzle 113 is greater than the length of the first placement hole 1211, ensuring that when the nozzle assembly 11 moves upward in the opposite direction of the first direction X, the first positioning member 115 can completely break away from the contact with the first placement hole 1211, thereby reducing the energy consumption and operating costs of the combination nozzle 1 and improving the user experience of the combination nozzle 1.

[0058] Alternatively, if Figure 3 As shown, the heat dissipation assembly 13 includes a heat dissipation block 131 , which also has a plurality of second placement through holes 1311 . The extension direction of each second placement through hole 1311 is parallel to the first direction X, and the second placement through holes 1311 are correspondingly arranged with the first placement through holes 1211 .

[0059] In one embodiment, the heating block 121 and the heat dissipation block 131 can be fixedly installed by an isolation column, and the projections of the first placement through hole 1211 and the second placement through hole 1311 in the first direction X coincide with each other, so that the nozzle assembly 11 can be inserted into the first placement through hole 1211 and the second placement through hole 1311, and when the combined nozzle 1 needs to perform a printing operation, the nozzle assembly 11 moves downward along the first direction X, the first positioning member 115 contacts the first placement through hole 1211, and the second positioning member 116 contacts the second placement through hole 1311, so that the heating assembly 12 heats the nozzle assembly 11 while the heat dissipation assembly 13 dissipates heat for the nozzle assembly 11.

[0060] In another embodiment, the radial cross-sectional area of ​​the first end of the second placement through hole 1311 close to the heating block 121 is smaller than the radial cross-sectional area of ​​the second end of the second placement through hole 1311 away from the heating block 121. At least part of the second positioning member 116 is located in the second placement through hole 1311.

[0061] When the combined nozzle 1 needs to perform a printing operation, that is, the nozzle assembly 11 will perform printing, the nozzle assembly 11 moves downward along the first direction X, the second positioning member 116 contacts the hole wall of the second placement through hole 1311, and the second positioning member 116 transfers heat to the heat sink 131 through the hole wall, and the heat sink 131 dissipates heat for the second positioning member 116. In one embodiment, the conical shape of the second positioning member 116 can be substantially the same as the shape of the second placement through hole 1311, and then the second positioning member 116 can completely fit the hole wall of the second placement through hole 1311, thereby improving the efficiency of the second positioning member 116 in transferring heat to the heat sink 131, and improving the heat dissipation efficiency of the heat sink assembly 13.

[0062] In one embodiment, the heat dissipation assembly 13 may further include a heat dissipation source (not shown), such as a heat dissipation fan, which is spaced apart from the heat dissipation block 131 to carry away the heat on the heat dissipation block 131 and further improve the heat dissipation efficiency of the heat dissipation assembly 13 .

[0063] In summary, through the cooperation between the first positioning member 115 and the first placement through hole 1211, and the cooperation between the second positioning member 116 and the second placement through hole 1311, it is achieved that when the nozzle assembly 11 moves downward along the first direction X, when the first positioning member 115 contacts the hole wall of the first placement through hole 1211, and the second positioning member 116 contacts the second placement through hole 1311, the first placement through hole 1211 restricts the first positioning member 115, and the second placement through hole 1311 restricts the second positioning member 116, thereby positioning the nozzle 113, avoiding excessive movement of the nozzle 113 and colliding with the product to be printed, thereby improving the safety of the nozzle 113. At the same time, the heating component 12 heats the consumables at the throat 114 corresponding to the first positioning member 115 through the contact and cooperation between the first positioning member 115 and the first placement through hole 1211, and the heat dissipation component 13 dissipates heat to the throat 114 area corresponding to the second positioning member 116 through the contact and cooperation between the second positioning member 116 and the second placement through hole 1311.

[0064] In one embodiment, if Figure 2 and Figure 3 As shown, the difference between a first distance D3 between an end of the first positioning member 115 close to the second positioning member 116 and an end of the second positioning member 116 away from the first positioning member 115, and a second distance D2 between the second end of the first placement through hole 1211 and the second end of the second placement through hole 1311 is within a preset range, for example, the preset range is ±1 cm, that is, the distance length of the first distance D3 is D2±1 cm, and then when the nozzle assembly 11 moves downward along the first direction X, the first positioning member 115 and the second positioning member 116 can achieve a state of contacting the hole wall of the placement through hole at the same time.

[0065] In other embodiments, the preset distance range of the distance D2 may also be other ranges, which can be set by the user according to actual conditions, and the present application does not impose any restrictions on this. This is to avoid that when the first positioning member 115 contacts the hole wall of the first placement through hole 1211, the second positioning member 116 does not move to contact the hole wall of the second placement through hole 1311, and due to the movement restriction of the first placement through hole 1211 on the nozzle assembly 11, the second positioning member 116 cannot continue to move to contact the hole wall of the second placement through hole 1311; or the second positioning member 116 contacts the hole wall of the second placement through hole 1311 while the first positioning member 115 does not contact the hole wall of the first placement through hole 1211, and due to the movement restriction of the second placement through hole 1311 on the nozzle assembly 11, the first positioning member 115 cannot continue to move to contact the hole wall of the first placement through hole 1211, thereby affecting the heating or heat dissipation efficiency of the heating component 12 or the heat dissipation component 13 on the nozzle assembly 11.

[0066] In this embodiment, by setting the difference between the first distance D3 between one end of the first positioning member 115 close to the second positioning member 116 and the end of the second positioning member 116 away from the first positioning member 115 and the second distance D2 between the second end of the first placement through hole 1211 and the second end of the second placement through hole 1311 to be within a preset range, it is ensured that the first positioning member 115 and the second positioning member 116 can contact the hole wall of the placement through hole at the same time, thereby improving the heating efficiency of the heating component 12 for the first positioning member 115 and the heat dissipation efficiency of the heat dissipation component 13 for the second positioning member 116, thereby improving the operating efficiency of the combined nozzle 1.

[0067] Optionally, see Figure 1 The heating assembly 12 may further include a heating tube 122 and a thermistor 123. The heating block 121 has a first accommodating chamber and a second accommodating chamber. The heating tube 122 is disposed in the first accommodating chamber for heating the heating block 121. The thermistor 123 is disposed in the second accommodating chamber for detecting the temperature of the heating block 121 so as to adjust the heating temperature of the heating tube 122. The thermistor 123 may be connected to the power supply circuit of the heating tube 122. When the thermistor 123 detects that the temperature of the heating block 121 is too high, the resistance of the thermistor 123 increases, and then the power supply current delivered by the power supply circuit to the heating tube 122 decreases, the efficiency of heat generation by the heating tube 122 decreases, and then the temperature of the heating block 121 decreases.

[0068] When the thermistor 123 detects that the temperature of the heating block 121 is too low, the resistance of the thermistor 123 decreases, and the power supply current transmitted by the power supply circuit to the heating tube 122 increases, the efficiency of heat generation by the heating tube 122 increases, and the temperature of the heating block 121 rises.

[0069] The temperature of the heating block 121 is detected by the thermistor 123 to control the efficiency of heat generation by the heating tube 122, so that the heating component 12 can adjust the temperature by itself, thereby improving the flexibility and convenience of the combination nozzle 1 and improving the user experience of the combination nozzle 1.

[0070] In summary, the combined nozzle 1 provided in the embodiment of the present application includes a plurality of nozzle assemblies 11, a heating assembly 12 and a heat dissipation assembly 13. The plurality of nozzle assemblies 11 extend along a first direction X, and are used to convey consumables for consumable extrusion. The heating assembly 12 and the heat dissipation assembly 13 are arranged at intervals and fixedly connected along the first direction X, and the heating assembly 12 and the heat dissipation assembly 13 are sleeved on the outer periphery of the plurality of nozzle assemblies 11. Among them, the nozzle assembly 11 is configured to have a first state of contact with the heating assembly 12 and the heat dissipation assembly 13, and a second state of separation from the heating assembly 12 and the heat dissipation assembly 13. The nozzle assembly 11 is in contact with the heating assembly 12 and the heat dissipation assembly 13 at the same time. The heating assembly 12 is used to heat the nozzle assembly 11 to heat the consumables and realize the printing function of the combined nozzle 1; the heat dissipation assembly 13 is used to dissipate heat from the nozzle assembly 11 to prevent the combined nozzle 1 from working in an overheated state and affecting the performance of the combined nozzle 1. The heating assembly 12 and the heat dissipation assembly 13 are sleeved on the outer periphery of the plurality of nozzle assemblies 11, so as to improve the efficiency of the combined nozzle 1 and reduce the consumables cost of the combined nozzle 1. Meanwhile, only one heating assembly 12 and one heat dissipation assembly 13 are provided to heat and dissipate heat for the multiple nozzle assemblies 11 , thereby reducing the volume of the combined nozzle 1 while realizing the operation of the multiple nozzle assemblies 11 , simplifying the structure, and improving the stability of the combined nozzle 1 .

[0071] At the same time, the first placement through hole 1211 on the heating component 12 and the second placement through hole 1311 on the heat dissipation component 13 restrict the movement of the nozzle component 11, thereby improving the safety of the combined nozzle 1 during operation and improving the user experience of the combined nozzle 1.

[0072] The present application also provides a printing device (not shown), including a combined nozzle 1 and an extrusion mechanism, the extrusion mechanism is connected to a plurality of nozzle assemblies 11, the extrusion mechanism is used to drive the nozzle assembly 11 to move downward along a first direction X, and contact the heating assembly 12 and the heat dissipation assembly 13, so that the nozzle assembly 11 is in a first state, the heating assembly 12 heats the nozzle assembly 11, the heat dissipation assembly 13 dissipates heat from the nozzle assembly 11, and the nozzle head 113 of the nozzle assembly 11 extrude the heated consumable material to perform a printing operation.

[0073] Alternatively, the extrusion mechanism is used to drive the nozzle assembly 11 to separate from the heating assembly 12 and the heat dissipation assembly 13, so that the nozzle assembly 11 is in the second state.

[0074] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A combined nozzle, characterized in that: include: A heat dissipation assembly, a heating assembly, and a plurality of nozzle assemblies; The nozzle assembly extends along a first direction, and the nozzle assembly is used to convey the consumable material and extrude the consumable material; The heating assembly and the heat dissipation assembly are spaced apart and fixedly connected along the first direction, and the heating assembly and the heat dissipation assembly are sleeved on the outer periphery of the plurality of nozzle assemblies; The nozzle assembly is configured to have a first state in which the nozzle assembly is in contact with the heating assembly and the heat dissipation assembly, and a second state in which the nozzle assembly is separated from the heating assembly and the heat dissipation assembly.

2. The combined nozzle according to claim 1, characterized in that: The nozzle assembly includes a nozzle, a throat and at least one positioning member; The nozzle is connected to one end of the throat and is located on a side of the heating component away from the heat dissipation component; The other end of the throat is located at a side of the heat dissipation component away from the heating component, and the throat is used to transport consumables; The positioning member is arranged around the outer circumference of the throat, and when the nozzle assembly is in the first state, the positioning member is in contact with the heat dissipation assembly and / or the heating assembly.

3. The combined nozzle according to claim 2, characterized in that: The nozzle assembly includes a first positioning member and a second positioning member, the first positioning member and the second positioning member are arranged on the throat at intervals along the first direction, the first positioning member is arranged close to the nozzle relative to the second positioning member, and when the nozzle assembly is in the first state, the first positioning member is in contact with the heating assembly, and the second positioning member is in contact with the heat dissipation assembly.

4. The combined nozzle according to claim 3, characterized in that: The radial cross-sectional area of ​​the first positioning member at one end close to the nozzle is smaller than the radial cross-sectional area of ​​the first positioning member at one end away from the nozzle; The radial cross-sectional area of ​​the second positioning member at one end close to the first positioning member is smaller than the radial cross-sectional area of ​​the second positioning member at one end away from the first positioning member.

5. The combined nozzle according to claim 3, characterized in that: The heating component includes a heating block, which is provided with a plurality of first placement through holes; the radial cross-sectional area of ​​the first end of the first placement through hole is smaller than the radial cross-sectional area of ​​the second end of the first placement through hole, the first end of the first placement through hole is arranged close to the nozzle, and the second end of the first placement through hole is arranged away from the nozzle; when the nozzle assembly is in the first state, the nozzle assembly is in contact with the hole wall of the first placement through hole.

6. The combined nozzle according to claim 5, characterized in that: At least a portion of the first positioning member is located in the first placement through hole, and when the nozzle assembly is in the first state, the first positioning member is in contact with a hole wall of the first placement through hole.

7. The combined nozzle according to claim 5, characterized in that: The distance between the end of the first positioning member away from the nozzle and the nozzle is greater than the length of the first placement through hole.

8. The combined nozzle according to claim 5, characterized in that: The heat dissipation assembly comprises a heat dissipation block, the heat dissipation block has a plurality of second placement through holes; the radial cross-sectional area of ​​the first end of the second placement through hole close to the heating block is smaller than the radial cross-sectional area of ​​the second end of the second placement through hole away from the heating block, the first end of the second placement through hole is arranged close to the heating block, and the second end of the second placement through hole is arranged away from the heating block; At least a portion of the second positioning member is located in the second placement through hole; when the nozzle assembly is in the first state, the second positioning member is in contact with the hole wall of the second placement through hole.

9. The combined nozzle according to claim 8, characterized in that: The difference between the first distance and the second distance is within a preset range, wherein the first distance is the distance between an end of the first positioning member close to the second positioning member and an end of the second positioning member away from the first positioning member, and the second distance is the distance between the second end of the first placement through hole and the second end of the second placement through hole.

10. A printing device, characterized in that: Comprising the combined nozzle and extrusion mechanism according to any one of claims 1 to 9, wherein the extrusion mechanism is connected to a plurality of nozzle assemblies in the combined nozzle, and the extrusion mechanism is used to drive the nozzle assembly to contact with a heating assembly and a heat dissipation assembly so that the nozzle assembly is in a first state; Alternatively, the extrusion mechanism is used to drive the nozzle assembly to separate from the heating assembly and the heat dissipation assembly, so that the nozzle assembly is in the second state.

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