Printhead assembly and melt deposition apparatus

Abstract

The utility model discloses a printing head assembly and a fusion lamination device. The printing head assembly is applied to the fusion lamination device, and the printing head assembly comprises a printing head main body which comprises a first part, and the first part is arranged on the surface of the printing head main body; at least one end of the first shell is detachably connected with the printing head main body; when the first shell and the printing head body are in an assembled state, at least one part of the first shell is arranged on the side, away from the printing head body, of the first component. At least one part of the first shell is arranged on the side, away from the printing head body, of the first component, the printing head body is protected, meanwhile, at least one end of the first shell is detachably connected with the printing head body, and disassembly and assembly are easy and convenient; simple operation, problem observation, part replacement and other frequent operation can be carried out on the interior of the printing head assembly, disassembly and assembly of the first component are simplified, and the overhaul and replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printer print heads, in particular to a print head assembly and a fused deposition apparatus. Background Art

[0002] Stereolithography equipment, such as a 3D printer, is a cumulative manufacturing technology and a kind of rapid prototyping technology machine. It is based on a digital model file and uses special wax materials, powdered metals, plastics and other bondable materials to manufacture three-dimensional objects by successively printing multiple layers of bondable materials.

[0003] In order to protect the print head from damage during operation, a housing is usually provided outside the print head to protect the print head and prevent the print head from directly touching other components, which may affect the printing effect of the print head. For example, a patent with the patent number CN114889128A discloses a high-temperature printer nozzle, which includes a housing for accommodating different cooling chambers and conveying chambers, and the nozzle is connected to the side of the housing away from the liquid cooling connector; a heating rod is inserted outside the nozzle to achieve the effect of preventing the high-temperature printer nozzle from fusing. Among them, the housing in this comparative document is integrally formed; another example is a patent with the patent number CN108819246A, which discloses a 3D printer nozzle including a protective housing. The protective housing is directly connected to the cooling fan and the nozzle mechanism by screws. Such a housing can protect the printer components, but when the components inside need to be maintained and repaired, it takes a long time to disassemble and install, reducing the maintenance and replacement efficiency of the components inside and affecting the working efficiency of the printer components. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, the utility model provides a print head assembly and a fused deposition apparatus. Among them, at least a part of the first housing of the print head assembly is arranged on the side of the first component facing away from the print head body, which has a protective effect on the print head body. At the same time, at least one end of the first housing is detachably connected to the print head body, and the disassembly and assembly are simple and convenient, which is helpful for some routine operations such as simple operations, problem observation and part replacement inside the print head assembly, simplifies the disassembly and assembly of the first component, and improves the maintenance and replacement efficiency.

[0006] Specifically, the following technical solutions are included:

[0007] An embodiment of the first aspect of the utility model provides a print head assembly applied to a fused deposition apparatus. The print head assembly includes:

[0008] The print head body includes a first component, and the first component is disposed on the surface of the print head body;

[0009] A first housing, at least one end of the first housing is detachably connected to the print head body; when the first housing and the print head body are in an assembled state, at least a part of the first housing is disposed on a side of the first component away from the print head body.

[0010] Optionally, when the first housing and the print head body are in a disassembled state, the first component is exposed; the disassembled state includes that the first end of the first housing is in a disassembled state with the print head body, or the second end of the first housing is in a disassembled state with the print head body, or both the first end and the second end of the first housing are in a disassembled state with the print head body.

[0011] Optionally, both the first end and the second end of the first housing are detachably connected to the print head body; or

[0012] The first end of the first housing is detachably connected to the print head body; or

[0013] The second end of the first housing is detachably connected to the print head body; or

[0014] The first end of the first housing is rotatably connected to the print head body, and the second end of the first housing is detachably connected to the print head body; or

[0015] The second end of the first housing is rotatably connected to the print head body, and the first end of the first housing is detachably connected to the print head body.

[0016] Optionally, the first housing is a one-side open housing, a two-side open housing, a multi-side open housing or a cover plate.

[0017] Optionally, the print head body further includes a second housing, the second housing is a one-side open housing, a two-side open housing or a multi-side open housing, the first housing includes a cover plate, the first housing and the second housing enclose a receiving space for receiving at least a part of the first component, and at least a part of the first housing and the second housing are detachably connected.

[0018] Optionally, the first housing is disposed on one side of the second housing, the side of the second housing away from the first housing is connected to the mounting seat of the print head body, and the first housing is rotatably connected to the second housing.

[0019] Optionally, the first housing includes a first end and a second end which are oppositely arranged. The first housing is rotatably connected to the second housing through the first end of the first housing, and the second end of the first housing is connected to the second housing through a first detachable structure.

[0020] Optionally, the first housing includes a first end and a second end which are oppositely arranged. The first housing is connected to the second housing through the first end of the first housing by a third detachable structure, and the second end of the first housing is connected to the second housing through a first detachable structure.

[0021] Optionally, the third detachable structure is a clamping structure or a magnetic attraction structure. When the third detachable structure is a clamping structure, a buckle is provided at the first end of the first housing, the buckle protrudes from the edge of the housing body of the first housing, a clamping groove is provided at the first end of the second housing, and the buckle is clamped with the clamping groove; or a buckle is provided at the first end of the second housing, the buckle protrudes from the edge of the housing body of the second housing, and a clamping groove is provided at the first end of the first housing; or a buckle and a clamping groove are provided at the first end of the first housing, a clamping groove is provided at the position corresponding to the buckle at the first end of the second housing, and a buckle is provided at the position corresponding to the clamping groove at the first end of the second housing.

[0022] Optionally, the first housing further includes an auxiliary component, the auxiliary component is electrically connected to the print head body, and the auxiliary component includes a blower and a wind guiding part.

[0023] Optionally, the first housing includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are detachably connected, and the second cover plate is located on the side of the first cover plate away from the second housing.

[0024] Optionally, the manufacturing material of the first cover plate and / or the second cover plate includes a transparent material or a light-transmitting material.

[0025] Optionally, the connection part of the first cover plate and the second cover plate is connected through a second detachable structure, and a gas passage is spaced at the non-connection part of the first cover plate and the second cover plate, and the gas passage is used for the blower to intake air.

[0026] Optionally, the second detachable structure is a clamping structure and / or a magnetic attraction structure.

[0027] Optionally, a blower mounting seat is provided on the side of the first cover plate facing the print head body, a positioning post is provided on the blower mounting seat, the positioning post extends towards the direction of the second housing, the position of the second cover plate corresponds to that of the blower mounting seat, and the blower mounting seat is used for mounting the blower.

[0028] Optionally, the air guiding portion defines an air guiding channel, an air inlet of the air guiding channel is connected to an air outlet of the blower, and an air outlet of the air guiding channel is arranged facing the printing platform.

[0029] Optionally, on a surface of the first cover plate facing the print head body, an air guiding channel accommodation space is defined, and the setting position of the air guiding channel accommodation space is closer to the second end of the first cover plate among the first end and the second end of the first cover plate, and the air guiding channel accommodation space is used to accommodate the air guiding portion.

[0030] Optionally, the first cover plate further includes:

[0031] A bayonet, arranged on a side of the air guiding channel accommodation space away from the second end of the first cover plate;

[0032] Further included is: an illuminating member, at least a part of which is located within the bayonet.

[0033] Optionally, a limiting portion is further included, the limiting portion includes a first limiting portion and a second limiting portion, and the first housing further includes a first limiting portion and / or the second housing further includes a second limiting portion; the first limiting portion is located at a joint of the first housing and the second housing when the first housing and the second housing are in an assembled state; the second limiting portion is located at a joint of the first housing and the second housing when the first housing and the second housing are in an assembled state; when the first housing includes a first limiting portion and the second housing includes a second limiting portion, the first limiting portion and the second limiting portion are arranged in a staggered manner; the first limiting portion protrudes from an edge of the housing body of the first housing; the second limiting portion protrudes from an edge of the housing body of the second housing.

[0034] Optionally, the limiting portion is a clamping structure and / or a magnetic attraction structure.

[0035] Optionally, the first detachable structure is a magnetic attraction structure and / or a clamping structure.

[0036] Optionally, the first cover plate includes a main board surface and a side plate, the main board surface is connected to the second cover plate, the side plate is used to connect the main board surface and the second housing, and a width of a second end of the side plate is greater than a width of a first end of the side plate; the second housing includes a first plate and a second plate arranged oppositely, both the first plate and the second plate are connected to the side plate, a width of a first end of the first plate is greater than a width of a second end of the first plate, and a width of a first end of the second plate is greater than a width of a second end of the second plate; or

[0037] The width of the second end of the side panel is smaller than the width of the first end of the side panel; the width of the first end of the first panel is smaller than the width of the second end of the first panel, and the width of the first end of the second panel is smaller than the width of the second end of the second panel.

[0038] Optionally, a magnetic member is disposed on the side of the second end of the side plate facing the second shell, and a metal member is disposed on the side of the second end of the first plate and the second end of the second plate facing the first cover plate; or

[0039] A metal piece is disposed on the side of the second end of the side plate facing the second shell, and a magnetic piece is disposed on the side of the second end of the first plate and the second end of the second plate facing the first cover plate.

[0040] Optionally, a receiving groove is provided on the side of the second end of the side plate facing the second shell, or the second end of the first plate and the second end of the second plate are provided on the side facing the first cover plate, and the magnetic member is arranged in the receiving groove.

[0041] Optionally, the second shell further includes a third plate, the first plate and the second plate are connected via the third plate, and the third plate is located on a side of the first plate away from the second end of the first plate.

[0042] Optionally, the print head body also includes a cutter assembly, the cutter assembly includes a handle and a cutter head, the cutter head is aligned with the consumables in the first component, a cutter through hole is provided on the first plate, the handle of the cutter assembly is located on the side of the first plate away from the second plate, and the cutter head is located between the first plate and the second plate.

[0043] Optionally, a ventilation hole is provided on the second plate.

[0044] Optionally, a stepped groove is provided on the third plate, the notch of the stepped groove is arranged to face away from the first shell, and the stepped groove is used to accommodate part of the first component.

[0045] Optionally, the rotational connection is a hinge connection, a pivot connection, a snap connection or a pin connection.

[0046] Optionally, the second shell includes a pair of first protrusions, and a mounting groove is formed between the pair of first protrusions; the first shell includes a second protrusion, and the second protrusion is arranged in the mounting groove; or: the first shell includes a pair of first protrusions, and a mounting groove is formed between the pair of first protrusions; the second shell includes a second protrusion, and the second protrusion is arranged in the mounting groove;

[0047] Wherein, a boss is provided on the side of the second raised block facing the first raised block, and a notch is provided on the side of the first raised block facing the second raised block; or: a notch is provided on the side of the second raised block facing the first raised block, and a boss is provided on the side of the first raised block facing the second raised block), and the boss matches the notch;

[0048] A pair of the first raised blocks are provided on the first end of the first housing or on the first end of the second housing.

[0049] Optionally, the first component includes one or more of a nozzle, an extruder, a heat dissipation ring, and a heat dissipation fan;

[0050] Wherein, the nozzle is a quick-release nozzle, and the quick-release nozzle is detachably connected to the print head body.

[0051] Optionally, at least one end of the first housing is directly detachably connected to the components on the print head body.

[0052] An embodiment of the second aspect of the present invention provides a fused deposition apparatus, including:

[0053] The print head assembly as described above.

[0054] The print head assembly and the fused deposition apparatus provided by the embodiments of the present invention. Among them, the print head assembly includes a print head body, and the print head body includes a first component. The first component is located on the surface of the print head body. When the first housing is in an assembled state with the print head body, at least a part of the first housing is disposed on the side of the first component facing away from the print head body, so that the first component can be located inside the first housing, and the first housing can protect the first component. At the same time, at least one end of the first housing is detachably connected to the print head body, so that the disassembly and assembly of the first housing are simple and convenient, which helps to perform some operations such as observation, maintenance, and part replacement on the print head body or the first component on the print head body after disassembling at least one end of the first housing, and can improve the user's inspection and replacement efficiency of the print head assembly, thereby improving the convenience and working efficiency of the user when using the print head assembly and the fused deposition apparatus.

[0055] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specific embodiments of the present application are specifically cited. Description of the Drawings

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0057] Figure 1 Schematic diagram of a print head assembly opened according to an embodiment of the present invention;

[0058] Figure 2 Schematic diagram of a print head assembly closed according to an embodiment of the present invention;

[0059] Figure 3 Schematic diagram of a first housing with the print main body and auxiliary components removed and opened according to an embodiment of the present invention;

[0060] Figure 4 Schematic diagram of a first housing with the print head main body and auxiliary components removed and closed according to an embodiment of the present invention;

[0061] Figure 5 According to Figure 4 Left view;

[0062] Figure 6 Schematic diagram of a first cover plate according to an embodiment of the present invention;

[0063] Figure 7 For Figure 6 Enlarged schematic diagram at position A;

[0064] Figure 8 Schematic diagram of a second housing according to an embodiment of the present invention;

[0065] Figure 9 For Figure 8 Enlarged schematic diagram at position B;

[0066] Figure 10 Cross-sectional view of a print head assembly according to an embodiment of the present invention;

[0067] Figure 11 For Figure 10 Enlarged schematic diagram at position C;

[0068] Figure 12 Connection schematic diagram of a first housing and a second housing according to an embodiment of the present invention;

[0069] Figure 13 Schematic diagram of a limiting portion and a third disassembly structure according to an embodiment of the present invention.

[0070] Among them, Figures 1 to 13 The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0071] 100 Print head assembly, 110 First housing, 111 First cover plate, 1111 Fan mounting seat, 1112 Positioning post, 1113 Air guide channel accommodating space, 1114 Bayonet, 1115 Lighting member, 1116 Side plate, 1117 Magnetic member, 1118 Second raised block, 1119 Boss, 112 Second cover plate, 113 Auxiliary component, 1131 Blower, 1132 Air guide portion, 114 Gas outlet channel, 120 Second housing, 121 First plate, 1211 Knife passing hole, 122 Second plate, 1221 Vent hole, 123 Third plate, 1231 Step groove, 1232 First raised block, 1233 Notch, 125 Metal member, 130 Limiting portion, 131 First limiting portion, 132 Second limiting portion, 140 Print head main body, 141 First component, 1411 Nozzle, 1412 Heat dissipation ring, 1413 Extruder, 1414 Heat dissipation fan, 142 Mounting seat, 143 Knife assembly, 144 Slide block assembly, 150 Third detachable structure, 151 Snap, 152 Card slot. Detailed implementation manners

[0072] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0073] Before further describing the embodiments of the present invention in detail, the orientation terms involved in the embodiments of the present invention, such as "upper part", "lower part", and "side part", do not have the meaning of limiting the protection scope of the present invention.

[0074] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the drawings.

[0075] Figure 1 Schematic diagram of a print head assembly opened according to an embodiment of the present invention; Figure 2 Schematic diagram of a print head assembly closed according to an embodiment of the present invention.

[0076] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a print head assembly 100, which is applied to a fused deposition apparatus. The print head assembly 100 includes:

[0077] The print head body 140 includes a first component 141 disposed on the surface of the print head body 140;

[0078] A first housing 110, at least one end of the first housing 110 is detachably connected to the print head body 140; when the first housing 110 and the print head body 140 are in an assembled state, at least a part of the first housing 110 is disposed on the side of the first component 141 facing away from the print head body 140.

[0079] Among them, the print head assembly 100 includes a print head body 140. The print head body 140 includes a first component 141 located on the surface of the print head body 140. When the first housing 110 and the print head body 140 are in an assembled state, at least a part of the first housing 110 is disposed on the side of the first component 141 facing away from the print head body 140, so that the first component 141 can be located inside the first housing 110, and the first housing 110 can protect the first component 141. At the same time, at least one end of the first housing 110 is detachably connected to the print head body 140, and the disassembly and assembly are simple and convenient, which helps to perform some simple operations, problem observation, and part replacement on the inside of the print head assembly 100. If the first component 141 needs to be replaced or disassembled and assembled, the efficiency of the user's maintenance and component replacement can be improved, thereby improving the convenience and working efficiency of the user when using the print head assembly 100 and the fused deposition modeling device.

[0080] Moreover, compared with the solution where the print head assembly 100 and the first component 141 thereon are directly exposed without a housing, the solution of the present application can avoid the high-temperature danger problem caused by the direct exposure of the print head assembly 100 and the first component 141 thereon, can increase the safety of the user during the use of the 3D printer, and is more beautiful, having a certain dust-proof and print head impact protection effect.

[0081] Among them, when the first housing 110 and the print head body 140 are in a disassembled state, the first component 141 is exposed; the disassembled state includes that the first end of the first housing 110 is in a disassembled state with the print head body 140, or the second end of the first housing 110 is in a disassembled state with the print head body 140, or both the first end and the second end of the first housing 110 are in a disassembled state with the print head body 140.

[0082] That is to say, the connection mode between at least one end of the first housing 110 and the print head body 140 can be a detachable connection, and disassembling one of the ends can expose the first component 141. Then, by opening at least one end, the observation, maintenance, repair, and replacement of the first component 141 of the print body 140 can be realized, and the disassembly and assembly efficiency can be improved.

[0083] Optionally, the shape of the first housing 110 can be a housing open on one side, a housing open on both sides, or a housing open on multiple sides, which can shield the first component 141, avoid the high-temperature danger problem caused by the exposure of the first component 141, increase the safety of the user during the use of the fused deposition modeling device (3D printer), and be more aesthetically pleasing, having a certain dust-proof and print head impact protection effect. The first housing 110 can be a cover plate. At this time, the first housing 110 shields the side of the first component 141 away from the print head body 140, and can also avoid the high-temperature danger problem caused by the exposure of the first component 141. At this time, the first housing 110 can also be arranged in the moving direction of the print head body 140, which can protect the first component 141 from being impacted, affect the printing effect of the fused deposition modeling device, and be more aesthetically pleasing, having a certain dust-proof and print head impact protection effect.

[0084] It should be noted that the first component 141 includes one or more of a nozzle 1411, an extruder 1413, a heat dissipation ring 1412, and a heat dissipation fan 1414;

[0085] Among them, the nozzle 1411 is a quick-release nozzle, and the quick-release nozzle is detachably connected to the print head body 140.

[0086] Optionally, the first component includes one or more of a nozzle 1411, an extruder 1413, a heat dissipation ring 1412, and a heat dissipation fan 1414. By providing the first housing 110, it can shield the above one or more components, avoid the high-temperature danger problem caused by direct exposure, and also avoid impact on the above components during movement. At the same time, by removing the first housing 110, the components of the first component 141 can be exposed, facilitating the maintenance and repair of the quick-release nozzle. Similarly, it is also convenient for the maintenance and repair of other components, such as the extruder 1413, the heat dissipation ring 1412, and the heat dissipation fan 1414.

[0087] It should be noted that the connection method between the first housing 110 and the print head body 140 can be that both the first end and the second end of the first housing 110 are detachably connected to the print head body 140; or the first end of the first housing 110 can be detachably connected to the print head body 140; or the second end of the first housing 110 can be detachably connected to the print head body 140; or the first end of the first housing 110 can be rotatably connected to the print head body 140, and the second end of the first housing 110 can be detachably connected to the print head body 140; or the second end of the first housing 110 can be rotatably connected to the print head body 140, and the first end of the first housing 110 can be detachably connected to the print head body 140.

[0088] Among them, the first end of the first housing 110 may be the upper end of the first housing 110 in the attached drawing, and the second end may be the lower end of the first housing 110 in the attached drawing; or the first end is the lower end of the first housing 110 in the attached drawing, and the second end is the upper end of the first housing 110 in the attached drawing; or the first end is the left end of the first housing 110 in the attached drawing, and the second end is the right end of the first housing 110 in the attached drawing; or the first end is the right end of the first housing 110 in the attached drawing, and the second end is the left end of the first housing 110 in the attached drawing. For structures such as the second housing 120 and the first cover plate 111 mentioned in this application, the examples of the first end and the second end are similar to those of the first housing 110 above and will not be described in detail. And it can be understood that the understanding of the first end and the second end is not limited to the upper end, the lower end, the left end, and the right end in the above description, and is only an example for convenience of understanding.

[0089] Figure 3 Schematic diagram of the first housing opened with the printing main body and auxiliary components removed according to an embodiment of the present utility model; Figure 4 Schematic diagram of the first housing closed with the print head main body and auxiliary components removed according to an embodiment of the present utility model; Figure 5 According to Figure 4 Left view of.

[0090] In a feasible embodiment, as Figures 3 to 5 shown, the print head main body 140 further includes a second housing 120. Thus, at least one end of the first housing 110 can be detachably connected to the second housing 120 of the print head main body 140 to achieve the opening and exposure and closing and capping of the first housing side of the print head main body. The second housing 120 can be a one-side open housing, a two-side open housing or a multi-side open housing. Figures 3 to 5 In the embodiment shown, the second housing 120 is a three-side open housing, which belongs to one type of multi-side open housing. The first housing 110 includes a cover plate. The first housing 110 and the second housing 120 enclose an accommodation space for accommodating at least part of the first component 141, and the first housing 110 and the second housing 120 are detachably connected.

[0091] Of course, in a feasible embodiment, at least one end of the first housing 110 can also be directly detachably connected to the components of the print head main body 140 to achieve the opening and exposure and closing and capping of the first housing side of the print head main body.

[0092] Among them, the second housing 120 and the first housing 110 enclose an accommodation space, which can protect the first component 141 in the accommodation space. The first housing 110 and the second housing 120 are detachably connected. Through the assembly and disassembly between the first housing 110 and the second housing 120, the opening and exposure of the first housing side of the accommodation space and the closing and capping can be realized. In this way, the safety of the user during the process of using the 3D printer can be increased. While having a certain dust-proof and print head impact protection effect, it can help to perform some simple operations, problem observation, and part replacement and other regular operations on the first component 141 located in the accommodation space. If the first component 141 needs to be replaced or disassembled and assembled, the efficiency of the user's maintenance and component replacement can be improved, thereby improving the convenience and working efficiency of the user when using the print head assembly 100 and the fused deposition apparatus.

[0093] Specifically, when it is necessary to observe, repair, and replace the inside of the print head assembly 100, it is only necessary to open the disassembly connection to separate the first housing 110 and the second housing 120. The first detachable structure can be a snap structure or a magnetic attraction structure, which can simplify the disassembly and assembly of the second housing 120 and improve the inspection and replacement efficiency of the internal components of the print head assembly 100. Since the efficiency of replacement and repair is improved, the working efficiency of the print head assembly can be ensured. Moreover, compared with the solution where the print head assembly 100 and the first component 141 thereon are directly exposed without a housing, the solution of the present application can avoid the high-temperature danger problem caused by the direct exposure of the print head assembly 100 and the first component 141 thereon, increase the safety of the user during the process of using the 3D printer, and is more beautiful, having a certain dust-proof and print head impact protection effect.

[0094] In a feasible implementation manner, the first housing 110 is disposed on one side of the second housing 120. The side of the second housing 120 away from the first housing 110 is connected to the mounting seat of the print head main body, and the first housing 110 is rotatably connected to the second housing 120.

[0095] It can be understood that through the rotational connection, the first housing 110 can be flipped on the second housing 120, so that the first housing 110 does not need to be removed, that is, the first housing 110 and the second housing 120 do not need to be separated, and no alignment operation is required when the first housing 110 is closed again, further improving the inspection and replacement efficiency of the internal components of the printer assembly 100.

[0096] In a feasible real-time manner, the first housing 110 includes a first end and a second end disposed opposite to each other. The first housing 110 is rotatably connected to the second housing 120 through the first end of the first housing 110, and the second end of the first housing 110 is connected to the second housing 120 through the first detachable structure.

[0097] Among them, the print head assembly 100 includes a second housing 120 and a first housing 110 disposed on one side of the second housing 120. The side of the second housing 120 away from the first housing 110 is connected to the mounting seat 142 of the print head body 140. The first end of the first housing 110 is rotatably connected to the second housing 120, and the second end of the first housing 110 is detachably connected to the second housing 120. Such a setting can realize the rotation of the first housing 110 on the second housing 120. When it is necessary to replace and repair the internal parts of the print head assembly, after opening the first detachable structure at the second end of the first housing 110, flipping the first housing 110 upward can realize the operations of observing, repairing, and replacing the print head assembly. On the one hand, the number of bolts to be disassembled and assembled is reduced, thereby improving the efficiency of repair and replacement; on the other hand, the first housing 110 and the second housing 120 do not need to be separated, and no alignment operation is required when reinstalling the first housing 110, further improving the efficiency of repair and replacement.

[0098] Specifically, when it is necessary to observe, maintain, or replace the print head assembly, open the first detachable structure, and then flip the first housing 110. The first housing 110 is opened around the second housing 120 with the first end as the axis, and the first component is exposed, facilitating the staff to observe, maintain, and replace parts. The first detachable structure can be a bolt, a buckle, or a magnetic attraction structure. When the first detachable structure is a bolt, only two bolts need to be disassembled and installed to complete the opening and closing of the first housing 110, greatly saving the time for opening and closing the housing, thereby improving the efficiency of repair and replacement, enabling the print head assembly 100 to be put into use as soon as possible, and also ensuring the working efficiency of the print head assembly 100. When the first detachable structure is a clamping or magnetic attraction structure, only a certain force needs to be applied to the first housing 110 to open the first housing 110, so that the first housing 110 rotates and opens around the second housing 120. Similarly, when closing, only an opposite force needs to be applied to realize the closing of the first housing 110, further shortening the opening and closing time of the first housing 110 and improving the repair efficiency and replacement efficiency of the print head assembly 100.

[0099] Figure 12 FIG. is a schematic connection diagram of the first housing and the second housing according to an embodiment of the present invention; Figure 13 FIG. is a schematic diagram of the limiting portion and the third detachable structure according to an embodiment of the present invention.

[0100] In a feasible implementation manner, as Figure 12 and Figure 13As shown, the first housing 110 includes a first end and a second end that are oppositely arranged. The first housing 110 is connected to the second housing 120 through the first end of the first housing 110 by a third detachable structure, and the second end of the first housing 110 is connected to the second housing 120 by a first detachable structure.

[0101] Among them, the third detachable structure 150 is a snap structure or a magnetic attraction structure. When the third detachable structure 150 is a snap structure, as Figure 13 shown, a snap 151 is provided at the first end of the first housing 110. The snap 151 protrudes from the edge of the housing body of the first housing 110. A slot 152 is provided at the first end of the second housing 120, and the snap 151 is snapped with the slot 152; or a snap 151 is provided at the first end of the second housing 120. The snap 151 protrudes from the edge of the housing body of the second housing 120. A slot 152 is provided at the first end of the first housing 110; or a snap 151 and a slot 152 are provided at the first end of the first housing 110. A slot 152 is provided at the position corresponding to the snap 151 at the first end of the second housing 120, and a snap 151 is provided at the position corresponding to the slot 152 at the first end of the second housing 120. The first end of the first housing 110 and the first end of the second housing 120 can be connected by a plurality of third detachable structures 150. When the first detachable structure is opened, the first housing 110 can be turned up and lifted upward along the first end on the second housing 120, realizing the opening of the first housing 110 and the second housing 120, and exposing the first component 141, which is convenient for observing, inspecting, and maintaining the first component 141. It should be noted that in some embodiments, after the first detachable structure is opened and the first housing 110 is turned up and lifted upward along the first end on the second housing 120, the positional relationship between the snap 151 and the slot 152 is a position relationship that can be relatively far away without interference. At this time, the user can directly remove the first housing from the second housing, which can further facilitate the user's observation, inspection, and maintenance.

[0102] Optionally, when the third detachable structure 150 is a magnetic structure, a magnetic member 1117 may be provided on the side of the first end of the first housing 110 facing the second housing 120, and a metal member 125 may be provided on the side of the first end of the second housing 120 facing the first housing 110; or a metal sheet 125 may be provided on the side of the first end of the first housing 110 facing the second housing 120, and a magnetic member 1117 may be provided on the side of the first end of the second housing 120 facing the first housing 110; or when the third detachable structure 150 is a plurality of magnetic structures, the magnetic member 1117 and the metal member 125 may be provided at intervals on the side of the first end of the first housing 110 facing the second housing 120, and the metal member 125 and the magnetic member 1117 may be provided at intervals on the side of the first end of the second housing 120 facing the first housing 110 accordingly. After the first detachable structure is opened, the third detachable structure 150 can be directly opened to separate the first housing 110 and the second housing 120, exposing the first component 141.

[0103] In a feasible implementation manner, the first housing 110 further includes an auxiliary component 113, and the auxiliary component 113 is electrically connected to the print head body 140. The auxiliary component 113 includes a blower 1131 and a wind guiding portion 1132.

[0104] Optionally, the wind guiding portion 1132 defines a wind guiding channel, the air inlet of the wind guiding channel is connected to the air outlet of the blower 1131, and the air outlet of the wind guiding channel faces the printing platform.

[0105] Among them, the auxiliary component 113 includes a blower 1131 and a wind guiding portion 1132, both of which are disposed in the first housing 110 and are exposed as the first housing 110 is opened, facilitating the maintenance and repair of the auxiliary component 113. The air outlet of the blower 1131 is connected to the air inlet of the wind guiding channel formed by the wind guiding portion 1132, and the air outlet of the wind guiding channel formed by the wind guiding portion 1132 faces the printing platform. When the print head assembly 100 is printing, it can timely dissipate heat from the consumables on the printing platform, improving the forming efficiency of the consumables on the printing platform. Integrating the blower 1131 and the wind guiding portion 1132 onto the first housing 110, on the one hand, facilitates the maintenance and repair of the blower 1131, and on the other hand, makes the fused deposition apparatus more beautiful and has a certain dust-proof effect on the auxiliary component 113. Moreover, the auxiliary component 113 has a certain weight, and when the first housing 110 itself is relatively light, it can improve the disassembly feel when the user disassembles the first housing 110.

[0106] In a feasible implementation manner, the first housing 110 includes a first cover plate 111 and a second cover plate 112. The first cover plate 111 is detachably connected to the second cover plate 112, and the second cover plate 112 is located on the side of the first cover plate 111 away from the second housing 120.

[0107] It should be noted that the first housing 110 can be configured in the form of a first cover plate 111 and a second cover plate 112. The first cover plate 111 is connected to the second housing 120, and the second cover plate 112 is located on the side of the first cover plate 111 away from the second housing 120. When only the auxiliary component 113 configured on the first cover plate 111 needs to be maintained and repaired, only the second cover plate 112 needs to be opened, and there is no need to remove the first cover plate 111 from the second housing 120. The second cover plate 112 is detachably connected to the first cover plate 111, which can improve the disassembly and assembly efficiency of the second cover plate 112 and the first cover plate 111, improve the maintenance and repair efficiency of the auxiliary component 113 configured on the first cover plate 111, and thus ensure the subsequent working efficiency of the print head assembly 100.

[0108] Wherein, the manufacturing material of the first cover plate 111 and / or the second cover plate 112 includes a transparent material or a light-transmitting material. For example, at least one of the first cover plate 111 and the second cover plate 112 is a transparent cover plate. In this way, by setting the manufacturing material of the first cover plate 111 and / or the second cover plate 112 to include a transparent material or a light-transmitting material, it is convenient for the staff to directly observe the working conditions of the components configured on the first cover plate 111 from the outside, and the auxiliary component 113 on the first cover plate 111 can be maintained and repaired in a timely manner, thereby ensuring the stability and reliability of the operation of the print head assembly 100.

[0109] In a feasible implementation manner, the connection between the first cover plate 111 and the second cover plate 112 is connected by a second detachable structure, and a gas passage 114 is provided at intervals at the non-connection part of the first cover plate 111 and the second cover plate 112. The gas passage 114 is used for the air intake of the blower 1131.

[0110] Wherein, the non-connection part of the first cover plate 111 and the second cover plate 112 is configured with a gas passage 114, which can facilitate the air intake of the blower 1131 on the first cover plate 111, and thus realize the air outlet function of the blower 1131, ensuring the heat dissipation effect of the forming consumables on the printing platform.

[0111] Optionally, the second detachable structure is a snap-fit structure and / or a magnetic attraction structure. A second detachable structure is provided between the first cover plate 111 and the second cover plate 112. A snap-fit member may be provided on the side of the first cover plate 111 facing the second cover plate 112, and a snap-fit port or a snap-fit groove may be provided on the side of the second cover plate 112 facing the first cover plate 111. The snap-fit member is configured to match the snap-fit port or the snap-fit groove. Alternatively, the snap-fit member may be provided on the side of the second cover plate 112 facing the first cover plate 111, and correspondingly, the snap-fit port or the snap-fit groove may be provided on the side of the first cover plate 111 facing the second cover plate 112. Or, a snap-fit member and a snap-fit port may be provided simultaneously on the side of the first cover plate 111 facing the second cover plate 112, and a snap-fit port and a snap-fit member may be provided at corresponding positions on the side of the second cover plate 112 facing the first cover plate 111, so as to implement the snap-fit structure of the first cover plate 111 and the second cover plate 112.

[0112] Similarly, a magnetic member 1117 may be provided on the side of the first cover plate 111 facing the second cover plate 112, and a metal member 125 may be provided at a corresponding position on the side of the second cover plate 112 facing the first cover plate 111. Or, a metal member 125 may be provided on the side of the first cover plate 111 facing the second cover plate 112, and a magnetic member 1117 may be provided at a corresponding position on the side of the second cover plate 112 facing the first cover plate 111. Or, a magnetic member 1117 and a metal member 125 may be provided on the side of the first cover plate 111 facing the second cover plate 112, and a metal member 125 and a magnetic member 1117 may be provided at corresponding positions on the side of the second cover plate 112 facing the first cover plate 111, so as to implement the magnetic attraction structure of the first cover plate 111 and the second cover plate 112. It can be understood that, in order to maintain the degree of fit between the first cover plate 111 and the second cover plate 112, the magnetic member 1117 generally needs to be embedded in the first cover plate 111 and / or the second cover plate 112.

[0113] It should be noted that the snap-fit structure and the magnetic attraction structure may be provided on the first cover plate 111 and the second cover plate 112 simultaneously. For example, the magnetic attraction structure and the snap-fit structure may be arranged at intervals, or the snap-fit structure may be provided on one side, and the magnetic attraction structure may be provided on the opposite side, so as to implement the function of the detachable structure of the first cover plate 111 and the second cover plate 112. Details are not described one by one herein.

[0114] Figure 6 Schematic diagram of the first cover plate according to an embodiment of the present invention.

[0115] In a feasible implementation manner, such as Figure 6As shown in the figure, on one side of the first cover plate 111 facing the print head body 140, there is a blower mounting seat 1111. On the blower mounting seat 1111, there are positioning posts 1112 which extend towards the direction of the second housing 120. The second cover plate 112 corresponds to the position of the blower mounting seat 1111, and the blower mounting seat 1111 is used to mount the blower 1131.

[0116] Among them, the blower 1131 is arranged on the blower mounting seat 1111 of the first cover plate 111. The positioning posts 1112 correspond to the positions of the mounting holes on the blower 1131. After the positioning posts 1112 pass through the mounting holes of the blower 1131, they are fastened by bolts to realize the positioning of the blower 1131. The position of the second cover plate 112 corresponds to that of the blower mounting seat 1111, that is, the second cover plate 112 corresponds to the position of the blower 1131. The second cover plate 112 is detachably connected to the first cover plate 111, which is convenient for maintaining and overhauling the blower 1131. At the same time, at least one of the first cover plate 111 and the second cover plate 112 can be a transparent cover plate, which is convenient for the staff to directly observe the operation of the blower 1131 from the outside, helps to maintain and overhaul the blower 1131 in time, and improves the service life of the blower 1131.

[0117] In a feasible implementation manner, on the surface of the first cover plate 111 facing the print head body 140, a guide air channel accommodation space 1113 is defined. The setting position of the guide air channel accommodation space 1113 is closer to the second end of the first cover plate 111 among the first end and the second end of the first cover plate 111. The guide air channel accommodation space 1113 is used to accommodate the air guide part.

[0118] Among them, the first cover plate 111 is also provided with a guide air channel accommodation space 1113 which is used to accommodate the air guide part 1132 to realize the installation and fixation of the air guide part 1132. The air inlet of the air guide channel formed by the air guide part 1132 is connected to the air outlet of the blower 1131, and the air outlet of the air guide channel formed by the air guide part 1132 faces the printing platform. The air guide channel dissipates heat from the material extruded below the nozzle 1411 by the air blown out by the blower 1131, that is, dissipates heat from the consumables on the printing platform, improves the forming efficiency of the consumables on the printing platform, and further improves the working efficiency of the print head assembly.

[0119] In a feasible implementation manner, the first cover plate 111 further includes:

[0120] A bayonet 1114 is arranged on one side of the guide air channel accommodation space 1113 away from the second end of the first cover plate 111;

[0121] It further includes: a lighting member 1115, and at least part of the lighting member 1115 is located in the bayonet 1114.

[0122] Among them, a lighting member 1115 is provided at one end of the air guiding part 1132 far away from the blower 1131. The lighting member 1115 is fixedly connected through a bayonet 1114. The bayonet 1114 is located on one side of the air guiding channel accommodating space 1113 far away from the second end of the first cover plate 111, so that the light spot of the lighting member 1115 faces the printing platform when the print head assembly 100 works. Even in a relatively dark working environment, the forming situation of the consumables on the printing platform can be observed, and thus the reliability of the operation of the print head assembly 100 can be ensured.

[0123] It should be noted that the bayonet 1114 can be a U-shaped opening or a circular opening, as long as it can realize the clamping and fixing of the lighting member 1115. The lighting member 1115 can be an LED light source or a tungsten filament light source, or other light sources that can emit light, which will not be listed one by one here.

[0124] In a feasible implementation manner, it further includes:

[0125] A limiting part 130, which is arranged between the first housing 110 and the second housing 120, and the limiting part 130 is located between the first end of the first housing 110 and the second end of the first housing 120.

[0126] It can be understood that the print head main body 140 needs to move back and forth with the print head assembly 100. By arranging the limiting part 130 between the first housing 110 and the second housing 120, and at the same time the limiting part 130 is located between the first end and the second end of the first cover plate 111, it can avoid the misalignment and crosstalk between the first housing 110 and the second housing 120 when the print head assembly 100 reciprocates, and improve the sealing performance between the second housing 120 and the first housing 110 during the movement process.

[0127] Among them, as Figure 13 shown, the first housing 110 further includes a first limiting part 131 and / or the second housing 120 further includes a second limiting part 132; the first limiting part 131 is located at the joint of the first housing 110 and the second housing 120 when the first housing 110 and the second housing 120 are in the assembled state; the second limiting part 132 is located at the joint of the first housing 110 and the second housing 120 when the first housing 110 and the second housing 120 are in the assembled state; when the first housing 110 includes the first limiting part 131 and the second housing 120 includes the second limiting part 132, the first limiting part 131 and the second limiting part 132 are arranged in a staggered manner; the first limiting part 131 protrudes from the edge of the housing body of the first housing 110; the second limiting part 132 protrudes from the edge of the housing body of the second housing 120.

[0128] Specifically, the first limiting portion 131 can be provided only inside the first housing 110. The first limiting portion 131 extends into the second housing 120. The provision of the first limiting portion 131 can prevent the left-right misalignment and crosstalk between the second housing 120 and the first housing 110 during the movement. The second limiting portion 132 can be provided only inside the second housing 120. The second limiting portion 132 extends into the first housing 110. The provision of the second limiting portion 132 can prevent the left-right misalignment and crosstalk between the second housing 120 and the first housing 110 during the movement. Alternatively, the first limiting portion 131 can be provided inside the first housing 110, and at the same time, the second limiting portion 132 can be provided inside the second housing 120, and the first limiting portion 131 and the second limiting portion 132 are arranged in a staggered manner, which can ensure that the first limiting portion 131 extends into the second housing 120, and at the same time, the second limiting portion 132 extends into the first housing 110, which can prevent the left-right misalignment and crosstalk between the second housing 120 and the first housing 110 during the movement, and can also limit the up-down crosstalk between the first housing 110 and the second housing 120 during the working process, and improve the sealing performance between the first housing 110 and the second housing 120 during the working process.

[0129] Among them, the limiting portion 130 can also be a clamping structure and / or a magnetic attraction structure. The limiting between the second housing 120 and the first housing 110 can also be realized through the clamping structure and / or the magnetic attraction structure. A clamping member can be provided on the side of the second housing 120 facing the first housing 110, and a clamping port or a clamping groove can be provided on the side of the first housing 110 facing the second housing 120. The clamping member is arranged to match the clamping port or the clamping groove. Alternatively, the clamping member can be provided on the side of the first housing 110 facing the second housing 120, and correspondingly, the clamping port or the clamping groove can be provided on the side of the second housing 120 facing the first housing 110. Or a clamping member and a clamping port can be provided on the side of the second housing 120 facing the first housing 110 at the same time, and a clamping port and a clamping member can be provided at the corresponding position on the side of the first housing 110 facing the second housing 120 to realize the clamping structure between the second housing 120 and the first housing 110.

[0130] Similarly, a magnetic member 1117 can be provided on the side of the second housing 120 facing the first housing 110, and a metal member 125 can be provided at a corresponding position on the side of the first housing 110 facing the second housing 120. Or a metal member 125 can be provided on the side of the second housing 120 facing the first housing 110, and a magnetic member 1117 can be provided at a corresponding position on the side of the first housing 110 facing the second housing 120. Or a magnetic member 1117 and a metal member 125 are provided on the side of the second housing 120 facing the first housing 110, and a metal member 125 and a magnetic member 1117 are provided at corresponding positions on the side of the first housing 110 facing the second housing 120, so as to realize the magnetic attraction structure between the second housing 120 and the first housing 110. It can be understood that, in order to maintain the fitting degree between the second housing 120 and the first housing 110, the magnetic member 1117 usually needs to be embedded in the second housing 120 and / or the first housing 110.

[0131] It should be noted that the snap-fit structure and the magnetic attraction structure can be provided on the second housing 120 and the first housing 110 at the same time. For example, the magnetic attraction structure and the snap-fit structure can be arranged at intervals, or the snap-fit structure can be provided on one side and the magnetic attraction structure can be provided on the opposite side, so as to realize the limitation of the second housing 120 and the first housing 110, which will not be elaborated here one by one.

[0132] In a feasible implementation manner, the first detachable structure is a magnetic attraction structure and / or a snap-fit structure.

[0133] Wherein, the second end of the first housing 110 is connected to the second housing 120 through the first detachable structure, and the first detachable structure is a magnetic attraction structure and / or a snap-fit structure.

[0134] Specifically, a snap-fit member can be provided on the side of the second housing 120 facing the first housing 110, and a snap-fit port or a snap-fit groove can be provided on the side of the first housing 110 facing the second housing 120. The snap-fit member is arranged to match the snap-fit port or the snap-fit groove. Or the snap-fit member can be provided on the side of the first housing 110 facing the second housing 120, and correspondingly, the snap-fit port or the snap-fit groove can be provided on the side of the second housing 120 facing the first housing 110, so as to realize the snap-fit structure between the second housing 120 and the first housing 110.

[0135] Similarly, a magnetic member 1117 can be provided on the side of the second housing 120 facing the first housing 110, and a metal member 125 can be provided at a corresponding position on the side of the first housing 110 facing the second housing 120. Or a metal member 125 can be provided on the side of the second housing 120 facing the first housing 110, and a magnetic member 1117 can be provided at a corresponding position on the side of the first housing 110 facing the second housing 120, so as to realize the magnetic attraction structure between the second housing 120 and the first housing 110.

[0136] It should be noted that two connection methods can also be used simultaneously. On one side of the second housing 120 facing the first housing 110, a magnetic member 1117 and a buckle are provided. On the corresponding position of the side of the first housing 110 facing the second housing 120, a metal member 125 and a card interface are provided. Or on one side of the second housing 120 facing the first housing 110, a magnetic member 1117 and a card interface are provided. Or on one side of the second housing 120 facing the first housing 110, a metal member 125 and a buckle are provided. Or on one side of the second housing 120 facing the first housing 110, a metal member 125 and a card interface are provided, which can realize the connection between the second end of the first housing 110 and the second housing 120.

[0137] In a feasible implementation manner, the first cover plate 111 includes a main board surface and a side plate 1116. The main board surface is connected to the second cover plate 112. The side plate 1116 is used to connect the main board surface and the second housing 120. The width of the second end of the side plate 1116 is greater than the width of the first end of the side plate 1116. The second housing 120 includes a first plate 121 and a second plate 122 which are oppositely arranged. Both the first plate 121 and the second plate 122 are connected to the side plate 1116. The width of the first end of the first plate 121 is greater than the width of the second end of the first plate 121, and the width of the first end of the second plate 122 is greater than the width of the second end of the second plate 122. Or

[0138] The width of the second end of the side plate 1116 is less than the width of the first end of the side plate 1116. The width of the first end of the first plate 121 is less than the width of the second end of the first plate 121, and at the same time, the width of the first end of the second plate 122 is less than the width of the second end of the second plate 122.

[0139] Among them, through the misalignment fit between the second end of the first cover plate 111 and the second end of the second housing 120, that is, the second end of the first cover plate 111 protrudes towards the second housing 120, or the second end of the second housing 120 protrudes towards the first cover plate 111. On the one hand, it can realize the matching connection between the first housing 110 and the second housing 120. On the other hand, it can also avoid the vertical displacement misalignment of the second housing 120 caused by the movement of the print head assembly 100, ensuring the stability and reliability of the print head assembly 100. The vertical direction refers to the direction from the first end to the second end of the first housing 110.

[0140] In a feasible implementation manner, a magnetic member 1117 is arranged on the side of the second end of the side plate 1116 facing the second housing 120, and metal members 125 are arranged on the sides of the second ends of the first plate 121 and the second plate 122 facing the first cover plate 111. Or

[0141] A metal piece 125 is disposed on the side of the second end of the side plate 1116 facing the second housing 120, and magnetic pieces 1117 are disposed on the sides of the second ends of the first plate 121 and the second plate 122 facing the first cover plate 111.

[0142] It should be noted that in this embodiment, in order to achieve the detachable connection between the second end of the first housing 110 and the second housing 120, a magnetic piece 1117 or a metal piece 125 may be provided on the side of the second end of the side plate 1116 facing the second housing 120, and accordingly, a metal piece 125 or a magnetic piece 1117 is provided on the side of the second end of the second housing 120 facing the side plate 1116 to implement a magnetic attraction structure between the second end of the first housing 110 and the second housing 120.

[0143] It can be understood that a clamping structure may also be provided on the second end of the first cover plate 111 and the second end of the second housing 120. For example, a buckle or a clamping interface is provided on the side of the second end of the side plate 1116 facing the second housing 120, and accordingly, a clamping interface or a buckle is provided on the side of the second end of the second housing 120 facing the side plate 1116. Alternatively, a clamping structure and a magnetic attraction structure may be provided on the second end of the first cover plate 111 and the second end of the second housing 120 at the same time. Since it has been described above, it will not be elaborated here.

[0144] Wherein, a receiving groove is provided on the side of the second end of the side plate 1116 facing the second housing 120, or receiving grooves are provided on the sides of the second ends of the first plate 121 and the second plate 122 facing the first cover plate 111, and a magnetic piece 1117 is disposed in the receiving groove.

[0145] It can be understood that since the magnetic piece 1117 has a certain thickness, in order to ensure the fitting degree of the connection between the second housing 120 and the first housing 110, a receiving groove needs to be provided in the side plate 1116 or the first plate 121 and the second plate 122 of the second housing 120 where the magnetic piece 1117 is provided. The receiving groove is used to place the magnetic piece 1117, which can ensure the tightness of the connection between the second housing 120 and the first housing 110 and improve the reliability of the print head assembly 100. Among them, in order to improve the tightness of the fit between the first housing 110 and the second housing 120, the metal piece 125 may be provided in the form of a thin sheet.

[0146] Figure 8 Schematic diagram of a second housing according to an embodiment of the present invention;

[0147] In a feasible implementation manner, as Figure 8 shown, the second housing 120 further includes a third plate 123. The first plate 121 and the second plate 122 are connected by the third plate 123, and the third plate 123 is located on the side of the first plate 121 away from the second end of the first plate 121.

[0148] It should be noted that, by the relatively arranged first plate 121 and second plate 122, and the third plate 123 used to connect the first plate 121 and the second plate 122, the second shell 120 is made into a "concave" shape, and one side of the second shell 120 is connected to the first shell 110 to form a accommodating space, and the side of the second shell 120 opposite to the first shell 110 is connected to the mounting seat 142 of the print head body 140, then the first component 141 of the print head body 140 can be arranged in the accommodating space, on the one hand, it can prevent dust from falling into the parts of the print head body 140 and affecting the service life and working reliability of the print head assembly 100, and on the other hand, it can integrate the various components together to improve the integrity and aesthetics of the product.

[0149] Among them, the print head body 140 also includes a cutter assembly 143, the cutter assembly 143 includes a handle and a cutter head, the cutter head is aligned with the consumables in the first component 141, and a cutter through hole 1211 is provided on the first plate 121. The handle of the cutter assembly 143 is located on the side of the first plate 121 away from the second plate 122, and the cutter head is located between the first plate 121 and the second plate 122. A cutter assembly 143 is arranged in the cutter passage hole 1211, and a handle of the cutter assembly 143 is located outside the second shell 120, and a cutter head of the cutter assembly 143 is aligned with the consumables between the extruder 1413 and the loose ring 1412. When printing is finished or the consumables need to be cut and repositioned, the handle is touched by an external contact to compress the spring on the cutter assembly 143, so that the handle moves toward the inside of the second shell 120, driving the cutter head to move toward the consumables, and then cutting the consumables. After cutting the consumables, the contacts are away from the cutter assembly 143, and the handle is reset under the action of the spring, so that the cutter head is away from the consumables, and the print head assembly 100 works normally.

[0150] Optionally, the second plate 122 is provided with vents 1221. Since the print head assembly 100 is provided with a heat dissipation fan 1414 for dissipating heat from the heat dissipation ring 1412, the vents 1221 are provided on the second plate 122 to help circulate the air in the accommodation space of the second housing 120, effectively improving the heat dissipation efficiency of the heat dissipation fan 1414.

[0151] The third plate 123 is provided with a stepped groove 1231 , the notch of the stepped groove 1231 is arranged to face away from the first housing 110 , and the stepped groove 1231 is used to accommodate a portion of the first component 141 .

[0152] It should be noted that the size of the stepped groove 1231 matches the size of the extruder 1413. A slider assembly 144 is provided on the side of the mounting seat 142 of the print head body 140 facing away from the second housing 120. The slider assembly 144 is arranged in a slideway to facilitate driving the movement of the print head assembly 100. The motor of the extruder 1413 is located above the slider assembly 144 and is arranged on the same side as the slider assembly 144.

[0153] In a feasible implementation manner, the rotational connection is a hinge connection, a pivot connection, a snap connection, or a pin connection.

[0154] It should be noted that the first end of the first housing 110 is rotationally connected to the second housing 120. The second housing 120 and the first end of the first housing 110 are connected by a hinge, or a pin passes through the first end of the first housing 110 and the second housing 120. Alternatively, a connection seat can be provided on the first end of the second housing 120 or the first housing 110, and a connection shaft is correspondingly provided on the first housing 110 or the second housing 120. The connection shaft matches the connection seat to achieve the purpose of the first housing 110 rotating on the second housing 120.

[0155] Optionally, the first end of the first housing 110 and the first end of the second housing 120 can be connected by a snap connection to achieve the purpose of the first housing 110 rotating open around the second housing 120, as Figure 12 and Figure 13 shown. Since the snap 151 is in the shape of a hook and also has a rotational function, the rotational connection achieved by the snap 151 has high wear resistance, making the life of the rotational connection part longer, and thus ensuring the reliability of the first housing 110 and the second housing 120.

[0156] Figure 7 is Figure 6 an enlarged schematic view of part A in Figure 9 is Figure 8 an enlarged schematic view of part B in Figure 10 is a cross-sectional view of a print head assembly according to an embodiment of the present invention; Figure 11 is Figure 10 an enlarged schematic view of part C in

[0157] In a feasible implementation manner, as Figure 7 , Figures 9 to 11 shown, the second housing 120 includes a pair of first raised blocks 1232, and an installation groove is formed between the pair of first raised blocks 1232; the first housing 110 includes a second raised block 1118, and the second raised block 1118 is arranged in the installation groove; or

[0158] The first housing 110 includes a pair of first raised blocks 1232, and an installation groove is formed between the pair of first raised blocks 1232; the second housing 120 includes a second raised block 1118, and the second raised block 1118 is disposed in the installation groove;

[0159] Wherein, a boss 1119 is provided on one side of the second raised block 1118 facing the first raised block 1232, and a notch 1233 is provided on one side of the first raised block 1118 facing the second raised block 1232; or

[0160] A notch 1233 is provided on one side of the second raised block 1232 facing the first raised block 1118, and a boss 1119 is provided on one side of the first raised block 1232 facing the second raised block 1118, and the boss 1119 matches the notch 1233;

[0161] The pair of first raised blocks 1232 are provided on the first end of the first housing 110 or on the first end of the second housing 120.

[0162] It should be noted that an installation groove is formed between the pair of first raised blocks 1232, and the second raised block 1118 matches the installation groove. Usually, the length of the installation groove is greater than the length of the second raised block 1118. In this embodiment, as Figure 7 、 Figures 9 to 11 shown, a notch 1233 is provided on one side of the first raised block 1232 facing the second raised block 1118, and a boss 1119 is provided on one side of the second raised block 1118 facing the first raised block 1232. The boss 1119 and the notch 1233 match to realize the connection between the pair of first raised blocks 1232 and the second raised block 1118. Among them, the pair of first raised blocks 1232 are provided on the second housing 120, and the second raised block 1118 is provided on the first end of the cover plate 110.

[0163] Optionally, the pair of first raised blocks 1232 can also be provided on the first end of the first housing 1110, then the second raised block 1118 is provided on the second housing 120, or a boss 1119 can be provided on one side of the first raised block 1232 facing the second raised block 1118, and a notch 1233 is provided on one side of the second raised block 1118 facing the first raised block 1232. It is also possible that a notch 1233 is provided on one side of one of the first raised blocks 1232 facing the second raised block 1118, and a boss 1119 is provided on one side of the other first raised block 1232 facing the second raised block 1118. Then, a boss 1119 is provided on one side of the corresponding second raised block 1118 to match the notch 1233 of the first raised block 1232, and a notch 1233 is provided on the other side of the second raised block 1118 to match the boss 1119 of the first raised block 1232, realizing the rotational connection between the first end of the first housing 110 and the second housing 120.

[0164] Optionally, the boss 1119 may be cylindrical, conical and / or truncated cone-shaped, and the shape of the notch 1233 may match the shape of the boss 1119. When the boss 1119 is conical, the vertex end is arranged toward the notch 1233, and when the boss 1119 is truncated cone-shaped, the small end face is arranged toward the notch 1233. The boss 1119 of this embodiment is conical, such as Figure 7 , Figure 9 and Figure 11 shown.

[0165] Optionally, an embodiment of the present invention provides a melt lamination device, comprising:

[0166] The print head assembly 100 is as described above.

[0167] Among them, the molten lamination device includes a print head assembly 100, which is stacked layer by layer on the printing platform to form a required three-dimensional object, thereby achieving the purpose of parts production, facilitating the preparation of parts with complex shapes and structures, and speeding up product development and production.

[0168] It can be understood that since the fused lamination device of the present embodiment includes the above-mentioned print head assembly 100 , the fused lamination device of the present embodiment includes all the advantages of the above-mentioned print head assembly 100 , which will not be described in detail.

[0169] The present application also provides the following embodiments:

[0170] Embodiment 1: A print head assembly 100, applied to a melt lamination device, the print head assembly 100 comprising:

[0171] The print head body 140 includes a first component 141, and the first component 141 is disposed on the surface of the print head body 140;

[0172] The first shell 110 , at least one end of the first shell 110 is detachably connected to the print head body 140 ; ​​when the first shell 110 and the print head body 140 are in an assembled state, at least a portion of the first shell 110 is disposed on a side of the first component 141 away from the print head body 140 .

[0173] Example 2. According to the print head assembly 100 of Example 1, when the first shell 110 and the print head body 140 are in a disassembled state, the first component 141 is exposed; the disassembled state includes the first end of the first shell 110 and the print head body 140 being in a disassembled state, or the second end of the first shell 110 and the print head body 140 being in a disassembled state, or both the first end and the second end of the first shell 110 and the print head body 140 are in a disassembled state.

[0174] Embodiment 3. The print head assembly 100 according to Embodiment 1, wherein both the first end and the second end of the first housing 110 are detachably connected to the print head body 140; or

[0175] The first end of the first housing 110 is detachably connected to the print head body 140; or

[0176] The second end of the first housing 110 is detachably connected to the print head body 140; or

[0177] The first end of the first housing 110 is rotatably connected to the print head body 140, and the second end of the first housing 110 is detachably connected to the print head body 140; or

[0178] The second end of the first housing 110 is rotatably connected to the print head body 140, and the first end of the first housing 110 is detachably connected to the print head body 140.

[0179] Embodiment 4. The print head assembly 100 according to any one of Embodiments 1 to 3, wherein the first housing 110 is a one-sided open housing, a two-sided open housing, a multi-sided open housing or a cover plate.

[0180] Embodiment 5. The print head assembly 100 according to Embodiment 1, wherein the print head body 140 further includes a second housing 120, the second housing 120 is a one-sided open housing, a two-sided open housing or a multi-sided open housing, the first housing 110 includes a cover plate, the first housing 110 and the second housing 120 enclose an accommodation space for accommodating at least part of the first component 141, and at least one end of the first housing 110 and the second housing 120 are detachably connected.

[0181] Embodiment 6. The print head assembly 100 according to Embodiment 5, wherein the first housing 110 is disposed on one side of the second housing 120, the side of the second housing 120 away from the first housing 110 is connected to the mounting seat 142 of the print head body 140, and the first housing 110 is rotatably connected to the second housing 120.

[0182] Embodiment 7. The print head assembly 110 according to Embodiment 5, wherein the first housing 110 includes a first end and a second end disposed opposite to each other, the first housing 110 is rotatably connected to the second housing 120 through the first end of the first housing 110, and the second end of the first housing 110 is connected to the second housing 120 through a first detachable structure.

[0183] Embodiment 8. The print head assembly 100 according to Embodiment 5, wherein the first housing 110 includes a first end and a second end disposed opposite to each other, the first housing 110 is connected to the second housing 120 through a third detachable structure through the first end of the first housing 110, and the second end of the first housing 110 is connected to the second housing 120 through a first detachable structure.

[0184] Example 9. The print head assembly 100 according to Example 8, wherein the third detachable structure 150 is a snap-fit structure or a magnetic attraction structure. When the third detachable structure 150 is a snap-fit structure, a snap 151 is provided at the first end of the first housing 110, the snap 151 protruding from the edge of the housing body of the first housing 110, and a slot 152 is provided at the first end of the second housing 120, the snap 151 being snap-fitted with the slot 152; or a snap 151 is provided at the first end of the second housing 120, the snap 151 protruding from the edge of the housing body of the second housing 120, and a slot 152 is provided at the first end of the first housing 110; or a snap 151 and a slot 152 are provided at the first end of the first housing 110, a slot 152 is provided at the position corresponding to the snap 151 at the first end of the second housing 120, and a snap 151 is provided at the position corresponding to the slot 152 at the first end of the second housing 120.

[0185] Example 10. The print head assembly 100 according to Example 5, wherein the first housing 110 further includes an auxiliary component 113, the auxiliary component 113 being electrically connected to the print head body 140, and the auxiliary component 113 includes a blower 1131 and a wind guiding portion 1132.

[0186] Example 11. The print head assembly 100 according to Example 10, wherein the first housing 110 includes a first cover plate 111 and a second cover plate 112, the first cover plate 111 being detachably connected to the second cover plate 112, and the second cover plate 112 being located on the side of the first cover plate 111 away from the second housing 120.

[0187] Example 12. The print head assembly 100 according to Example 11, wherein the manufacturing material of the first cover plate 111 and / or the second cover plate 112 includes a transparent material or a light-transmitting material.

[0188] Example 13. The print head assembly 100 according to Example 11, wherein the connection portion between the first cover plate 111 and the second cover plate 112 is connected by a second detachable structure, and a gas passage 114 is provided at intervals at the non-connection portion between the first cover plate 111 and the second cover plate 112, the gas passage 114 being used for the blower 1131 to intake air.

[0189] Example 14. The print head assembly 100 according to Example 13, wherein the second detachable structure is a snap-fit structure and / or a magnetic attraction structure.

[0190] Example 15. The print head assembly 100 according to Example 11, wherein a blower mounting seat 1111 is provided on the side of the first cover plate 111 facing the print head body 140, a positioning post 1112 is provided on the blower mounting seat 1111, the positioning post 1112 extending towards the direction of the second housing 120, the second cover plate 112 corresponding to the position of the blower mounting seat 1111, and the blower mounting seat 1111 being used for mounting the blower 1131.

[0191] Example 16. The print head assembly 100 according to Example 11, wherein the air guiding portion 1132 defines an air guiding channel, the air inlet of the air guiding channel is connected to the air outlet of the blower 1131, and the air outlet of the air guiding channel is arranged facing the printing platform.

[0192] Example 17. The print head assembly 100 according to Example 16, wherein an air guiding channel accommodating space 1113 is defined on the surface of the first cover plate 111 facing the print head body 140, and the air guiding channel accommodating space 1113 is arranged closer to the second end of the first cover plate 111 among the first end and the second end of the first cover plate 111, and the air guiding channel accommodating space 1113 is used for accommodating the air guiding portion 1132.

[0193] Example 18. The print head assembly 100 according to Example 17, wherein the first cover plate 111 further comprises:

[0194] A bayonet 1114, which is arranged on one side of the air guiding channel accommodating space 1113 away from the second end of the first cover plate 111;

[0195] Further comprising: a lighting member 1115, at least a part of the lighting member 1115 is located within the bayonet 1114.

[0196] Example 19. The print head assembly 100 according to Example 5, further comprising a limiting portion 130, the limiting portion 130 includes a first limiting portion 131 and a second limiting portion 132, the first housing 110 further includes the first limiting portion 131 and / or the second housing 120 further includes the second limiting portion 132; the first limiting portion 131 is located at the joint of the first housing 110 and the second housing 120 when the first housing 110 and the second housing 120 are in an assembled state; the second limiting portion 132 is located at the joint of the first housing 110 and the second housing 120 when the first housing 110 and the second housing 120 are in an assembled state; when the first housing 110 includes the first limiting portion 131 and the second housing 120 includes the second limiting portion 132, the first limiting portion 131 and the second limiting portion 132 are arranged in a staggered manner; the first limiting portion 131 protrudes from the edge of the housing body of the first housing 110; the second limiting portion 132 protrudes from the edge of the housing body of the second housing 120.

[0197] Example 20. The print head assembly 100 according to Example 19, wherein the limiting portion 130 is a clamping structure and / or a magnetic attraction structure.

[0198] Example 21. The print head assembly 100 according to Example 7 or 8, wherein the first detachable structure is a magnetic attraction structure and / or a clamping structure.

[0199] Embodiment 22: According to the print head assembly 100 of embodiment 11, the first cover plate 111 includes a main board surface and a side plate 1116, the main board surface is connected to the second cover plate 112, the side plate 1116 is used to connect the main board surface and the second shell 120, and the width of the second end of the side plate 1116 is greater than the width of the first end of the side plate 1116; the second shell 120 includes a first plate 121 and a second plate 122 arranged opposite to each other, the first plate 121 and the second plate 122 are both connected to the side plate 1116, the width of the first end of the first plate 121 is greater than the width of the second end of the first plate 121, and the width of the first end of the second plate 122 is greater than the width of the second end of the second plate 122; or

[0200] The width of the second end of the side panel 1116 is smaller than the width of the first end of the side panel 1116 ; the width of the first end of the first panel 121 is smaller than the width of the second end of the first panel 121 , and the width of the first end of the second panel 122 is smaller than the width of the second end of the second panel 122 .

[0201] Embodiment 23: According to the print head assembly 100 of embodiment 22, a magnetic member 1117 is disposed on the second end of the side plate 1116 facing the second housing 120, and a metal member 125 is disposed on the second end of the first plate 121 and the second end of the second plate 122 facing the first cover plate 111; or

[0202] A metal component 125 is disposed on the second end of the side plate 1116 facing the second shell 120 , and a magnetic component 1117 is disposed on the second end of the first plate 121 and the second end of the second plate 122 facing the first cover plate 111 .

[0203] Embodiment 24, according to the print head assembly 100 of embodiment 23, a receiving groove is provided on the side of the second end of the side plate 1116 facing the second shell 120, or a receiving groove is provided on the side of the second end of the first plate 121 and the second end of the second plate 122 facing the first cover plate 111, and a magnetic member 1117 is arranged in the receiving groove.

[0204] Embodiment 25: According to the print head assembly 100 of Embodiment 22, the second shell 120 further includes a third plate 123, the first plate 121 and the second plate 122 are connected by the third plate 123, and the third plate 123 is located on a side of the first plate 121 away from the second end of the first plate 121.

[0205] Embodiment 26. According to the print head assembly 100 of Embodiment 22, the print head body 140 also includes a cutter assembly 143, the cutter assembly 143 includes a handle and a cutter head, the cutter head is aligned with the consumables in the first component 141, a cutter through hole 1211 is provided on the first plate 121, the handle of the cutter assembly 143 is located on the side of the first plate 121 away from the second plate 122, and the cutter head is located between the first plate 121 and the second plate 122.

[0206] Example 27. For the print head assembly 100 according to Example 22, the second plate 122 is provided with a vent hole 1221.

[0207] Example 28. For the print head assembly 100 according to Example 25, the third plate 123 is provided with a stepped groove 1231. The notch of the stepped groove 1231 faces away from the first housing 110. The stepped groove 1231 is used to accommodate part of the first component 141.

[0208] Example 29. For the print head assembly 100 according to Example 6 or 7, the rotational connection is a hinge connection, a pivot connection, a snap connection or a pin connection.

[0209] Example 30. For the print head assembly 100 according to Example 29, the second housing 120 includes a pair of first raised blocks 1232, and an installation groove is formed between the pair of first raised blocks 1232; the first housing 110 includes a second raised block 1118, and the second raised block 1118 is arranged in the installation groove; or

[0210] The first housing 110 includes a pair of first raised blocks 1232, and an installation groove is formed between the pair of first raised blocks 1232; the second housing 120 includes a second raised block 1118, and the second raised block 1118 is arranged in the installation groove;

[0211] Wherein, a boss 1119 is provided on the side of the second raised block 1118 facing the first raised block 1232, and a notch 1233 is provided on the side of the first raised block 1232 facing the second raised block 1118; or

[0212] The second raised block 1118 has a notch 1233 on the side facing the first raised block 1232, and a boss 1119 is provided on the side of the first raised block 1232 facing the second raised block 1118. The boss 1119 matches the notch 1233;

[0213] The pair of first raised blocks 1232 are arranged on the first end of the first housing 110 or on the first end of the second housing 120.

[0214] Example 31. For any of the print head assemblies 100 according to Examples 1 to 3, the first component 140 includes one or more of a nozzle 1411, an extruder 1413, a heat dissipation ring 1412 and a heat dissipation fan 1414;

[0215] Wherein, the nozzle 1411 is a quick-release nozzle, and the quick-release nozzle is detachably connected to the print head body.

[0216] Example 32. For any of the print head assemblies 100 according to Examples 1 to 3, at least one end of the first housing 110 is directly detachably connected to the components on the print head body 140

[0217] Example 33. A fused deposition apparatus, comprising:

[0218] A print head assembly 100 as described in any one of Examples 1 to 32.

[0219] In the present utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0220] Those skilled in the art will readily conceive of other embodiments of the present utility model after considering the specification and practicing the present utility model disclosed herein. The present utility model is intended to cover any variations, uses, or adaptations of the present utility model that follow the general principles of the present utility model and include well-known knowledge or conventional technical means in the technical field not disclosed by the present utility model. The specification and examples are only illustrative.

[0221] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A print head assembly, characterized in that, applied to a fused deposition apparatus, the print head assembly comprising: a print head main body including a first component disposed on the surface of the print head main body; a first housing, at least one end of the first housing being detachably connected to the print head main body; when the first housing and the print head main body are in an assembled state, at least a part of the first housing is disposed on a side of the first component facing away from the print head main body.

2. The print head assembly according to claim 1, characterized in that, both the first end and the second end of the first housing are detachably connected to the print head main body; or the first end of the first housing is detachably connected to the print head main body; or the second end of the first housing is detachably connected to the print head main body; or the first end of the first housing is rotatably connected to the print head main body, and the second end of the first housing is detachably connected to the print head main body; or the second end of the first housing is rotatably connected to the print head main body, and the first end of the first housing is detachably connected to the print head main body.

3. The print head assembly according to claim 1, characterized in that, the print head main body further includes a second housing, the second housing being a one-side open housing, a two-side open housing or a multi-side open housing, the first housing includes a cover plate, the first housing and the second housing enclose an accommodation space for accommodating at least a part of the first component, and at least one end of the first housing and the second housing are detachably connected.

4. The print head assembly according to claim 3, characterized in that, the first housing includes a first end and a second end disposed opposite to each other, the first housing is rotatably connected to the second housing through the first end of the first housing, and the second end of the first housing is connected to the second housing through a first detachable structure.

5. The print head assembly according to claim 3, characterized in that, the first housing includes a first end and a second end disposed opposite to each other, the first housing is connected to the second housing through the first end of the first housing by a third detachable structure, and the second end of the first housing is connected to the second housing through a first detachable structure.

6. The print head assembly according to claim 3, characterized in that, the first housing further includes an auxiliary component electrically connected to the print head main body, the auxiliary component including a blower and a wind guiding part.

7. The print head assembly according to claim 6, characterized in that, the first housing includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are detachably connected, and the second cover plate is located on a side of the first cover plate away from the second housing.

8. The print head assembly according to claim 7, characterized in that, a blower mounting seat is provided on a side of the first cover plate facing the print head main body, a positioning post is provided on the blower mounting seat and extends in a direction towards the second housing, the position of the second cover plate corresponds to that of the blower mounting seat, and the blower mounting seat is used for mounting the blower.

9. The print head assembly according to claim 7, wherein, the air guiding portion defines an air guiding channel, an air inlet of the air guiding channel is connected to an air outlet of the blower, and an air outlet of the air guiding channel is arranged facing the printing platform.

10. A fused deposition apparatus, wherein, comprising: the print head assembly according to any one of claims 1 to 9.

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