Printing head and three-dimensional printer

Abstract

The utility model discloses a printing head and a three-dimensional printer, relates to the technical field of three-dimensional printing equipment, and mainly aims to improve the disassembly and assembly convenience of a spray head assembly on the printing head so as to improve the working efficiency. The main technical scheme of the utility model is that the printing head comprises a heat dissipation piece; a nozzle assembly; the first clamping piece and the second clamping piece are movably connected with the heat dissipation piece, one end of the first clamping piece and one end of the second clamping piece can be close to each other or away from each other, and the first clamping piece and the second clamping piece have the clamping state that the first clamping piece and the second clamping piece are close to each other so as to clamp the spray head assembly; the release state is far away from each other to release the nozzle assembly; the locking piece is used for being connected with the first clamping piece and the second clamping piece so that the first clamping piece and the second clamping piece can be kept in the clamping state.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional printing equipment, in particular to a printing head and a three-dimensional printer. Background Art

[0002] In recent years, 3D printers have developed rapidly. As a key component of 3D printers, the print head is responsible for printing the printing material to the designated location according to the designed pattern.

[0003] The print head generally includes a nozzle assembly for ejecting printing materials and a heat sink for dissipating heat from the nozzle assembly. Since the nozzle assembly is a fragile structure, in order to ensure the printing effect of the print head, the nozzle assembly generally needs to be disassembled for replacement and repair. In the related art, the throat of the nozzle assembly is generally fixed to the heat sink by screws or jackscrews.

[0004] When the nozzle assembly needs to be disassembled, the nozzle assembly and the heat sink need to be disassembled and assembled by screwing the screws or the top screws with the aid of tools, which makes the operation complicated and reduces the working efficiency. Utility Model Content

[0005] In view of this, the embodiments of the present utility model provide a print head and a three-dimensional printer, the main purpose of which is to improve the convenience of disassembly and assembly of the nozzle assembly on the print head to improve work efficiency.

[0006] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0007] On the one hand, an embodiment of the utility model provides a print head, comprising:

[0008] Heat sink;

[0009] Nozzle assembly;

[0010] A first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are respectively movably connected to the heat sink, one end of the first clamping member and one end of the second clamping member can be close to or away from each other, and the first clamping member and the second clamping member have a clamping state in which they are close to each other to clamp the nozzle assembly, and a releasing state in which they are away from each other to release the nozzle assembly;

[0011] A locking member, wherein the locking member is used to connect with the first clamping member and the second clamping member so as to keep the first clamping member and the second clamping member in the clamping state.

[0012] Further, the locking member is used to move between a locking position and an unlocking position relative to the first clamping member and the second clamping member; in the locking position, the locking member locks the first clamping member and the second clamping member in the clamping state; in the unlocking position, the locking member releases the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are switched to the released state;

[0013] The locking member comprises a main body;

[0014] When the first clamping member and the second clamping member are in the clamping state, the main body is used to be mounted on or detached from the outside of the first clamping member and the second clamping member to switch between the locking position and the unlocking position;

[0015] In the locking position, the first clamping member and the second clamping member are confined within the main body;

[0016] In the unlocked position, the body is used to disengage the first clamp and the second clamp.

[0017] Further, the locking member is used to move between a locking position and an unlocking position relative to the first clamping member and the second clamping member; in the locking position, the locking member locks the first clamping member and the second clamping member in the clamping state; in the unlocking position, the locking member releases the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are switched to the released state;

[0018] The locking member comprises a main body, and at least one protrusion is arranged on the inner wall surface of the main body;

[0019] When the first clamping member and the second clamping member are in the clamping state, the main body is sleeved on the outside of the first clamping member and the second clamping member, and the main body is used to rotate relative to the first clamping member and the second clamping member to switch between the locking position and the unlocking position;

[0020] In the locking position, if the number of the protrusion is one, the first clamping member and the second clamping member are limited to be located between the protrusion and the inner wall of the main body; if the number of the protrusion is multiple, the multiple protrusions are arranged at intervals along the circumference of the main body, and the first clamping member and the second clamping member are limited to be located between any two of the protrusions;

[0021] In the unlocked position, the first clamping member or the first clamping member is disengaged from the protrusion.

[0022] Further, the protrusion includes a limiting surface, the limiting surface is used to abut against the first clamping member or the second clamping member, and the limiting surface is a concave arc surface;

[0023] The limiting surface and the inner wall surface of the main body are in smooth transition.

[0024] Further, a limit block is provided at an end of at least one of the first clamping member and the second clamping member, and the limit block extends outward based on an outer side wall of the first clamping member or the second clamping member;

[0025] At least one recess is provided on the inner wall surface of the main body, and the recess passes through two end surfaces of the main body;

[0026] In the locking position, the limit block is misaligned with the recess, and the limit block is clamped to the main body;

[0027] In the unlocking position, the limit block corresponds to the recess; the recess is used to avoid the limit block when the main body is separated from or sleeved on the outside of the first clamping member and the second clamping member.

[0028] Further, at least one of the protrusions and at least one of the recesses are arranged adjacent to each other;

[0029] There is a smooth transition between the protrusion and the depression which are arranged adjacent to each other.

[0030] Further, when the main body rotates from the locking position to the unlocking position, or when the main body rotates from the unlocking position to the locking position, the rotation angle of the main body is 90°.

[0031] Furthermore, an anti-slip member is provided on the outer periphery of the main body;

[0032] The outer peripheral surface of the anti-slip part is a wavy surface.

[0033] Furthermore, the first clamping member and the second clamping member are both rotatably connected to the heat sink, and the first clamping member and the second clamping member are used to rotate relative to the heat sink to switch between the clamping state and the releasing state.

[0034] Furthermore, a mounting channel is provided on the heat sink;

[0035] The nozzle assembly includes a throat pipe, and the throat pipe is pluggable and inserted into the installation channel;

[0036] In the clamping state, the first clamping member and the second clamping member clamp the throat;

[0037] In the released state, the first clamp and the second clamp release the throat.

[0038] Further, the heat sink comprises a first heat sink and a second heat sink connected to each other, the installation channel runs through the first heat sink and the second heat sink, and a gap communicating with the installation channel is provided between the first heat sink and the second heat sink;

[0039] The throat includes a clamping section, and the clamping section is exposed through the gap;

[0040] The first clamping member includes a first connecting end, and the second clamping member includes a second connecting end, the first connecting end and the second connecting end are located in the gap and are rotatably connected to the first heat sink and / or the second heat sink respectively;

[0041] In the clamping state, the first connection end and the second connection end clamp the clamping section;

[0042] In the released state, the first connection end and the second connection end release the clamping section.

[0043] Furthermore, the clamping section is provided with a first clamping piece; the first connecting end and the second connecting end are both provided with a second clamping piece;

[0044] In the clamping state, the first clamping member and the second clamping member are engaged and connected;

[0045] In the released state, the first clamping member and the second clamping member are separated.

[0046] Further, one of the first clamping member and the second clamping member is a clamping groove, and the other of the first clamping member and the second clamping member is a clamping plate;

[0047] In the clamping state, the clamping plate is clamped in the clamping slot;

[0048] In the released state, the clamping plate is disengaged from the clamping slot.

[0049] Furthermore, the first clamping member further comprises a first locking end opposite to the first connecting end; the second clamping member further comprises a second locking end opposite to the second connecting end;

[0050] The first locking end and the second locking end extend out of the gap;

[0051] The main body is sleeved on the outside of the first locking end and the second locking end.

[0052] Further, the first locking end includes a first abutting surface, the second locking end includes a second abutting surface, and at least one of the first abutting surface and the second abutting surface is a non-planar surface;

[0053] In the clamping state, the first abutting surface and the second abutting surface abut against each other.

[0054] On the other hand, an embodiment of the present invention further provides a three-dimensional printer, comprising the aforementioned print head.

[0055] By means of the above technical solution, the utility model has at least the following beneficial effects:

[0056] In the technical solution provided by the embodiment of the utility model, the first clamp and the second clamp are respectively movably connected to the heat sink, and the first clamp and the second clamp have a clamping state of being close to each other to clamp the nozzle assembly, and a releasing state of being far away from each other to release the nozzle assembly; and the locking member can be connected to the first clamp and the second clamp to keep the first clamp and the second clamp in the clamping state. When the nozzle assembly needs to be installed, the first clamp and the second clamp can be put in the clamping state first, and then the locking member can be connected to the first clamp and the second clamp to keep the first clamp and the second clamp in the clamping state, so that the first clamp and the second clamp clamp clamp the nozzle assembly, thereby realizing the installation of the nozzle assembly and the heat sink; accordingly, when the locking member is separated from the first clamp and the second clamp, the first clamp and the second clamp can be kept in the releasing state to release the nozzle assembly, thereby realizing the disassembly of the nozzle assembly. In the whole process of disassembling and assembling the nozzle assembly, no additional tools are needed, the operation is simple and convenient, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of the structure of a print head provided by an embodiment of the utility model;

[0058] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0059] Figure 3 A schematic diagram of the structure of a locking member in a print head provided by an embodiment of the utility model;

[0060] Figure 4 A schematic diagram of the structure of a heat sink in a print head provided by an embodiment of the utility model;

[0061] Figure 5 A schematic diagram of the structure of a heat sink, a first clamping member and a second clamping member in a print head after being assembled according to an embodiment of the utility model;

[0062] Figure 6A schematic diagram of the structure of a first clamping member and a second clamping member in a print head in a released state provided by an embodiment of the utility model;

[0063] Figure 7 A schematic structural diagram of a print head provided by an embodiment of the utility model, in which a first clamping member and a second clamping member are in a clamping state and at a first viewing angle;

[0064] Figure 8 A schematic diagram of the structure of a print head provided by an embodiment of the utility model, in which a first clamping member and a second clamping member are in a clamping state and at a second viewing angle;

[0065] Fig. 9 A schematic diagram of the structure of a nozzle assembly in a print head provided by an embodiment of the utility model;

[0066] Fig.10 A schematic structural diagram of a first clamping member in a print head provided by an embodiment of the utility model at a first viewing angle;

[0067] Fig.11 A schematic structural diagram of a first clamping member in a print head provided by an embodiment of the utility model at a second viewing angle;

[0068] Fig.12 A schematic structural diagram of a second clamping member in a print head provided by an embodiment of the utility model at a first viewing angle;

[0069] Fig.13 A schematic structural diagram of a second clamping member in a print head provided by an embodiment of the utility model at a second viewing angle;

[0070] Fig.14 A schematic cross-sectional structure diagram of a print head provided in another embodiment of the present invention.

[0071] Description of reference numerals:

[0072] 1-heat sink; 11-installation channel; 12-first heat sink; 13-second heat sink; 14-gap; 2-nozzle assembly; 21-throat; 211-clamping groove; 3-first clamping member; 31-limiting block; 32-first connecting end; 33-first locking end; 331-first abutting surface; 321-clamping plate; 4-second clamping member; 41-second connecting end; 42-second locking end; 421-second abutting surface; 5-locking member; 51-main body; 511-protrusion; 5111-limiting surface; 512-recess; 52-anti-slip member; 6-elastic member. DETAILED DESCRIPTION

[0073] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings in the preferred embodiments of the present invention.

[0074] like Figure 1 As shown, an embodiment of the utility model provides a print head, including a heat sink 1, a nozzle assembly 2, a first clamping member 3, a second clamping member 4 and a locking member 5, the first clamping member 3 and the second clamping member 4 are respectively movably connected to the heat sink 1, one end of the first clamping member 3 and one end of the second clamping member 4 can be close to or away from each other, the first clamping member 3 and the second clamping member 4 have a clamping state of being close to each other to clamp the nozzle assembly 2, and a releasing state of being away from each other to release the nozzle assembly 2; the locking member 5 is used to connect with the first clamping member 3 and the second clamping member 4 to keep the first clamping member 3 and the second clamping member 4 in the clamping state.

[0075] In the print head provided by the embodiment of the utility model, the first clamping member 3 and the second clamping member 4 are respectively movably connected to the heat sink 1, and the first clamping member 3 and the second clamping member 4 have a clamping state in which they are close to each other to clamp the nozzle assembly 2, and a releasing state in which they are away from each other to release the nozzle assembly 2; and the locking member 5 can be connected to the first clamping member 3 and the second clamping member 4 to keep the first clamping member 3 and the second clamping member 4 in the clamping state. When the nozzle assembly 2 needs to be installed, the first clamping member 3 and the second clamping member 4 can be firstly placed in a clamping state, and then the locking member 5 is connected to the first clamping member 3 and the second clamping member 4, so that the first clamping member 3 and the second clamping member 4 are kept in a clamping state, so that the first clamping member 3 and the second clamping member 4 clamp the nozzle assembly 2, thereby realizing the installation of the nozzle assembly 2 and the heat sink 1; accordingly, when the locking member 5 is separated from the first clamping member 3 and the second clamping member 4, the first clamping member 3 and the second clamping member 4 can be kept in a released state to release the nozzle assembly 2, thereby realizing the disassembly of the nozzle assembly 2. In the entire process of disassembling and assembling the nozzle assembly 2, no additional tools are required, the operation is simple and convenient, and the work efficiency is improved.

[0076] Among them, the nozzle assembly 2 may include a first terminal, and the print head may also include a second terminal. The first terminal and the second terminal are detachably connected. When the first terminal and the second terminal are connected, an electrical connection is achieved between the first terminal and the second terminal. Therefore, when the nozzle assembly 2 is disassembled, the first terminal and the second terminal are disassembled to achieve a quick connection between the two.

[0077] Specifically, the first terminal can be electrically connected to the heating block and temperature sensor of the nozzle assembly 2, respectively. The heating block can be used to heat the consumables entering the nozzle assembly 2, and the temperature sensor can be used to directly or indirectly detect the temperature of the heating block. When the nozzle assembly 2 is locked on the heat sink 1, the first terminal and the second terminal are electrically connected, and the heating block and the temperature sensor and other devices can be powered on and start working. When the nozzle assembly 2 is unlocked from the heat sink 1, the first terminal and the second terminal are separated, and the heating block and the temperature sensor and other devices stop working. It can be understood that the first terminal can include multiple wiring terminals, and the multiple wiring terminals can correspond to electrically connect different devices such as the heating block and the temperature sensor, or the first terminal can include multiple wires, and the multiple wires can correspond to electrically connect different devices such as the heating block and the temperature sensor, so that when the first terminal and the second terminal are electrically connected, each device can start working.

[0078] In some embodiments, the locking member 5 can be used to move between a locked position and an unlocked position relative to the first clamping member 3 and the second clamping member 4; in the locked position, the locking member 5 can lock the first clamping member 3 and the second clamping member 4 in a clamped state; in the unlocked position, the locking member 5 can release the first clamping member 3 and the second clamping member 4 to switch the first clamping member 3 and the second clamping member 4 to a released state.

[0079] When the nozzle assembly 2 needs to be installed, the nozzle assembly 2 is first placed at the set position of the heat sink 1, the first clamping member 3 and the second clamping member 4 are placed in a clamping state, and then the locking member 5 is moved to the locking position so that the locking member 5 locks the first clamping member 3 and the second clamping member 4 in the clamping state, so that the first clamping member 3 and the second clamping member 4 clamp the nozzle assembly 2, thereby achieving the installation of the nozzle assembly 2 and the heat sink 1;

[0080] When the nozzle assembly 2 needs to be disassembled, the locking member 5 can be moved to the unlocking position so that the locking member 5 releases the first clamping member 3 and the second clamping member 4, and the first clamping member 3 and the second clamping member 4 are in a released state to release the nozzle assembly 2, thereby realizing the disassembly of the nozzle assembly 2. In the entire process of disassembling and assembling the nozzle assembly 2, no additional tools are required, the operation is simple and convenient, and the work efficiency is improved.

[0081] In some embodiments, the locking member 5 may include a main body 51, which may be annular; when the first clamping member 3 and the second clamping member 4 are in a clamping state, the main body 51 is used to be mounted on or detached from the outside of the first clamping member 3 and the second clamping member 4 to switch between a locked position and an unlocked position; in the locked position, the first clamping member 3 and the second clamping member 4 are confined within the main body 51; in the unlocked position, the main body 51 is used to detach from the first clamping member 3 and the first clamping member 3.

[0082] When the nozzle assembly 2 needs to be installed, the first clamping member 3 and the second clamping member 4 can be placed in a clamping state, and then the main body 51 can be sleeved on the outside of the first clamping member 3 and the second clamping member 4, and the main body 54 is in a locked position, so that the first clamping member 3 and the second clamping member 4 are limited in the main body 51, so that the first clamping member 3 and the second clamping member 4 clamp the nozzle assembly 2, and the nozzle assembly 2 and the heat sink 1 are installed; when the nozzle assembly 2 needs to be disassembled, the main body 51 can be separated from the first clamping member 3 and the second clamping member 4 to release the first clamping member 3 and the second clamping member 4, so that the first clamping member 3 and the second clamping member 4 are in a released state and the nozzle assembly 2 is released, and the nozzle assembly 2 is disassembled. The structure is simple and easy to implement.

[0083] Among them, the main body 51 can be in a circular ring, a four-sided ring or a polygonal ring, etc., as long as it can be mounted on or detached from the outside of the first clamping member 3 and the second clamping member 4 to lock or unlock the state of the first clamping member 3 and the second clamping member 4, and this application does not limit it.

[0084] In some other embodiments, see Figure 2 and Figure 3 The locking member 5 may include a main body 51, which may be in a circular shape, and at least one protrusion 511 is arranged on the inner wall surface of the main body 51; when the first clamping member 3 and the second clamping member 4 are in the clamping state, the main body 51 is sleeved on the outside of the first clamping member 3 and the second clamping member 4, and the main body 51 is used to rotate relative to the first clamping member 3 and the second clamping member 4 to switch between the locked position and the unlocked position; in the locked position, if the number of the protrusion 511 is one, the first clamping member 3 and the second clamping member 4 are limited between the protrusion 511 and the inner wall of the main body 51; if the number of the protrusion 511 is multiple, the multiple protrusions 511 are arranged at intervals along the circumference of the main body 51; the first clamping member 3 and the second clamping member 4 are limited between any two protrusions 511; in the unlocked position, the first clamping member 3 or the first clamping member 3 is separated from the protrusion 511.

[0085] Among them, a protrusion 511 is arranged on the inner wall surface of the main body 51, and the protrusion 511 can reduce the inner diameter of a part of the main body 51, while the inner diameter of the part of the main body 51 where the protrusion 511 is not arranged remains unchanged, so that there are a small inner diameter part and a large inner diameter part in the main body 51. When the main body 51 rotates relative to the first clamping member 3 and the second clamping member 4, when the first clamping member 3 and the second clamping member 4 are located in the small inner diameter part of the main body 51, the main body 51 is in a locked position, and at the same time, the first clamping member 3 and the second clamping member 4 are locked in a clamping state; and when the first clamping member 3 and the second clamping member 4 are located in the large inner diameter part of the main body 51, the main body 51 is in an unlocked position, and at the same time, the first clamping member 3 and the second clamping member 4 are released and can be switched to a released state. It is more reliable to use.

[0086] It can be understood that when the number of protrusions 511 is one, the first clamping member 3 and the second clamping member 4 are locked between the protrusion 511 and the inner wall of the main body 51; when the number of protrusions 511 is multiple, the first clamping member 3 and the second clamping member 4 are locked between two opposite protrusions 511.

[0087] For ease of use, there may be two protrusions 511 , which are arranged opposite to each other.

[0088] In some embodiments, see Figure 3 The protrusion 511 may include a limiting surface 5111, which is used to abut against the first clamping member 3 or the second clamping member 4, and the limiting surface 5111 is a concave arc surface; the limiting surface 5111 and the inner wall surface of the main body 51 have a smooth transition to facilitate the smooth rotation of the locking member 5.

[0089] In some embodiments, see Figure 2 , Figure 3 , and combined with Fig.10 and Fig.12 A limit block 31 is provided at the end of at least one of the first clamping member 3 and the second clamping member 4, and the limit block 31 extends outward based on the outer wall of the first clamping member 3 or the second clamping member 4; at least one recess 512 is provided on the inner wall surface of the main body 51, and the recess 512 runs through the two end surfaces of the main body 51; in the locked position, the limit block 31 is misaligned with the recess 512, and the limit block 31 is clamped to the main body 51; in the unlocked position, the limit block 31 corresponds to the recess 512; the recess 512 is used to avoid the limit block 31 when the main body 51 is detached from or sleeved on the outside of the first clamping member 3 and the second clamping member 4.

[0090] When the locking member 5 is in the locked position, the limit block 31 is engaged with the main body 51, thereby preventing the locking member 5 from being separated from the first clamping member 3 and the second clamping member 4 when subjected to abnormal conditions such as external force, thereby ensuring the reliable locking effect of the locking member 5 on the first clamping member 3 and the second clamping member 4.

[0091] When the locking member 5 is in the unlocking position, the stop block 31 can be opposite to the recess 512, so that the locking member 5 can avoid the stop block 31 through the recess 512 during the process of detaching from the first clamping member 3 and the second clamping member 4, so that the locking member 5 can smoothly detach from the first clamping member 3 and the second clamping member 4. Correspondingly, in the process of sleeve-mounting the locking member 5 on the outside of the first clamping member 3 and the second clamping member 4, the recess 512 can also avoid the stop block 31, so that the locking member 5 can smoothly sleeve on the outside of the first clamping member 3 and the second clamping member 4.

[0092] For ease of use, both ends of the first clamping member 3 and the second clamping member 4 are provided with limit blocks 31 , and the number of the recesses 512 can be two, the two recesses 512 are arranged opposite to each other, and the two recesses 512 are used to avoid the corresponding limit blocks 31 .

[0093] In some embodiments, see Figure 2 and Figure 3 , at least one protrusion 511 and at least one recess 512 are arranged adjacent to each other. With such a structural arrangement, the locking member 5 can switch between the locked position and the unlocked position by rotating a small angle, thereby shortening the rotation stroke of the locking member 5 between the locked position and the unlocked position, thereby facilitating the locking and unlocking operations of the locking member 5 and saving more effort.

[0094] In some embodiments, see Figure 2 and Figure 3 , there is a smooth transition between the protrusion 511 and the depression 512 that are arranged adjacent to each other. Specifically, the surface of the protrusion 511 and the inner wall of the depression 512 are smoothly transitioned.

[0095] During the rotation of the locking member 5, the main body 51 thereof can smoothly slide through the first clamping member 3 or the second clamping member 4 through the smooth transition position between the protrusion 511 and the recess 512, thereby smoothly moving from the locking position to the unlocking position, or smoothly moving from the unlocking position to the locking position. The use of the locking member 5 is more convenient and labor-saving.

[0096] In some embodiments, when the main body 51 of the locking member 5 rotates from the locking position to the unlocking position, or when the main body 51 rotates from the unlocking position to the locking position, the rotation angle of the main body 51 is 90°.

[0097] That is, the protrusion 511 and the depression 512 arranged adjacent to each other have an angle of 90 degrees in the rotation direction of the main body 51. When the main body 51 is rotated 90 degrees forward or reverse, the locking position and the unlocking position of the locking member 5 can be switched, which facilitates the operation of the locking member 5.

[0098] In some embodiments, see Figure 2 and Figure 3 The outer periphery of the main body 51 of the locking member 5 may be provided with an anti-slip member 52. When in use, the user can hold the anti-slip member 52 to rotate the main body 51 to switch between the locked position and the unlocked position, which is convenient for operation. Specifically, the anti-slip member 52 and the main body 51 may be connected to each other or integrally formed.

[0099] In some embodiments, see Figure 2 and Figure 3 The outer peripheral surface of the anti-slip part 52 can be a wavy surface, which can not only enhance the anti-slip effect of the anti-slip part 52, but also improve the aesthetics of the locking part 5.

[0100] There are many ways in which the first clamping member 3 and the second clamping member 4 can be arranged on the heat sink 1 so as to be close to or far away from each other. For example, the first clamping member 3 and the second clamping member 4 can be arranged relative to each other, and at least one of them is slidably connected to the heat sink 1, so that at least one of them can slide relative to the heat sink 1 to make the two close to or far away from each other.

[0101] For ease of use, in some embodiments, see Figure 4 and Figure 5 The first clamping member 3 and the second clamping member 4 can be rotatably connected to the heat sink 1, and the first clamping member 3 and the second clamping member 4 are used to rotate relative to the heat sink 1 to switch between a clamping state and a releasing state.

[0102] Specifically, the first clamping member 3 and the second clamping member 4 rotate relative to the heat sink 1 and approach each other, and are in a clamping state; conversely, the first clamping member 3 and the second clamping member 4 rotate relative to the heat sink 1 and move away from each other, and are in a releasing state.

[0103] In some embodiments, see Figure 4 , Figure 5 and Figure 6 , the heat sink 1 may be provided with an installation channel 11; the nozzle assembly 2 may include a throat 21, which is pluggable into the installation channel 11; in the clamping state, the first clamping member 3 and the second clamping member 4 clamp the throat 21 to achieve the installation of the nozzle assembly 2 on the heat sink 1; in the releasing state, the first clamping member 3 and the second clamping member 4 release the throat 21, thereby achieving the removal of the nozzle assembly 2 from the heat sink 1.

[0104] In some embodiments, see Figure 4 , Figure 5 , Figure 6 and Figure 8 , and combined with Fig.10 and Fig.12 The heat sink 1 may include a first heat sink 12 and a second heat sink 13 connected to each other, the mounting channel 11 passes through the first heat sink 12 and the second heat sink 13, and a gap 14 communicating with the mounting channel 11 is provided between the first heat sink 12 and the second heat sink 13; the throat 21 includes a clamping section, and the clamping section may be exposed through the gap 14; the first clamping member 3 includes a first connecting end 32, and the second clamping member 4 includes a second connecting end 41, the first connecting end 32 and the second connecting end 41 are located in the gap 14, and are rotatably connected to the first heat sink 12 and / or the second heat sink 13, respectively; in the clamping state, the first connecting end 32 and the second connecting end 41 clamp the clamping section; in the releasing state, the first connecting end 32 and the second connecting end 41 release the clamping section.

[0105] Among them, the first clamping member 3 and the second clamping member 4 are rotatably connected in the gap 14 between the first heat sink 12 and the second heat sink 13, instead of being installed nakedly on the outside of the heat sink 1, so that the heat sink 1 can protect the first clamping member 3 and the second clamping member 4, which is conducive to the stable installation of the first clamping member 3 and the second clamping member 4 on the heat sink 1.

[0106] Moreover, the first clamping member 3 and the second clamping member 4 clamp the clamping section of the throat 21 in the gap 14 of the heat sink 1, so that the matching position of the first clamping member 3 and the second clamping member 4 and the throat 21 is also located in the gap 14. The heat sink 1 can also protect the mutual cooperation between the first clamping member 3 and the second clamping member 4 and the throat 21, so that the first clamping member 3 and the second clamping member 4 and the throat 21 can be stably matched.

[0107] In some embodiments, the first clamping member 3 and the second clamping member 4 may be rotatably connected to the first heat dissipation member 12 and / or the second heat dissipation member 13 via a rotating shaft.

[0108] Among them, the number of rotating shafts can be two, each rotating shaft can be connected to the first heat sink 12 and / or the first heat sink 12, and the first clamping member 3 and the second clamping member 4 are respectively rotatably connected to the corresponding rotating shafts, so as to realize the rotation of the first clamping member 3 and the second clamping member 4 relative to the heat sink 1 to switch between the clamping state and the release state.

[0109] Alternatively, there is one rotating shaft, which can be connected to the first heat sink 12 and / or the first heat sink 12, and the first clamping member 3 and the second clamping member 4 are both rotatably connected to the rotating shaft, and the first clamping member 3 and the second clamping member 4 can also be rotated relative to the heat sink 1 to switch between the clamping state and the release state.

[0110] Moreover, compared with the embodiment in which two rotating shafts are provided, the embodiment in which one rotating shaft is provided can reduce the number of parts of the print head and facilitate its assembly and disassembly.

[0111] For the above-mentioned embodiment of providing one rotating shaft, the first clamping member 3 and the second clamping member 4 can be stacked and arranged along the length direction of the rotating shaft, so that the two share one rotating shaft.

[0112] Specifically, the first connection end 32 and the second connection end are both provided with an axial hole, and the side of the first connection end 32 can also be provided with a mounting port connected to the axial hole, and the second connection end 41 can be inserted into the mounting port, and the axial holes of the first connection end 32 and the second connection end 41 are opposite, so that both are rotatably connected to the rotating shaft through the axial holes. At this time, the first clamping member 3 and the second clamping member 4 can be horizontally opposite to each other, which is conducive to reducing the occupied space, and at the same time, it is convenient for the first clamping member 3 and the second clamping member 4 to overlap and clamp the throat 21.

[0113] Alternatively, in some embodiments, the first connection end 32 and the second connection end are both provided with shaft holes, and a mounting recess is provided at the bottom of the position where the shaft hole is located on the first connection end 32, and a mounting recess is provided at the upper part of the position where the shaft hole is located on the second connection end 41. In this case, the first connection end 32 and the second connection end 41 are stacked and matched with each other through the mounting recesses of the Chinese character "A", and the shaft holes of the two are opposite, so that the two are rotatably connected to the rotating shaft through the shaft holes at the same time. In this case, the first clamping member 3 and the second clamping member 4 can be horizontally opposite to each other, which is conducive to reducing the occupied space, and at the same time, it is convenient for the first clamping member 3 and the second clamping member 4 to stack and clamp the throat 21.

[0114] In some embodiments, a first clamping component may be provided on the clamping section of the throat 21; a second clamping component may be provided on both the first connecting end 32 and the second connecting end 41; in the clamping state, the first clamping component and the second clamping component are engaged and connected; in the released state, the first clamping component and the second clamping component are separated.

[0115] In the clamping state, the first clamping member and the second clamping member are engaged and connected, which can improve the clamping stability of the first clamping member 3 and the second clamping member 4 on the throat 21, thereby improving the installation stability between the nozzle assembly 2 and the heat sink 1.

[0116] In some embodiments, see Figures 9 to 13 One of the first clamping member and the second clamping member can be a clamping groove 211, and the other of the first clamping member and the second clamping member can be a clamping plate 321; in the clamping state, the clamping plate 321 is engaged in the clamping groove 211; in the releasing state, the clamping plate 321 is separated from the clamping groove 211.

[0117] For ease of use, the first clamping member can be a clamping groove 211, and the second clamping member can be a clamping plate 321. Moreover, in order to further improve the clamping stability of the clamping plate 321 in the clamping groove 211, the end surface of the clamping plate 321 can be an arc surface matching the outer contour of the throat 21.

[0118] In some embodiments, see Figure 1 , Figure 7 as well as Figures 10 to 13 The first clamping member 3 also includes a first locking end 33 opposite to the first connecting end 32; the second clamping member 4 also includes a second locking end 42 opposite to the second connecting end 41; the first locking end 33 and the second locking end 42 extend out of the gap 14; the main body 51 is sleeved on the outside of the first locking end 33 and the second locking end 42.

[0119] The first locking end 33 and the second locking end 42 extend out of the gap 14 , so that the locking member 5 can lock or unlock the first locking end 33 and the second locking end 42 outside the gap 14 , which facilitates the operation of the locking member 5 .

[0120] It can be understood that when the locking member 5 is in the locking position, the locking member 5 can be limited between the aforementioned limiting block 31 and the heat sink 1 to prevent the locking member 5 from falling due to abnormal circumstances.

[0121] In some embodiments, see Figures 10 to 13 , and combined with Figure 2 The first locking end 33 may include a first abutting surface 331, and the second locking end 42 may include a second abutting surface 421. At least one of the first abutting surface 331 and the second abutting surface 421 may be a non-planar surface; in the clamping state, the first abutting surface 331 and the second abutting surface 421 abut against each other.

[0122] Since planes are prone to processing errors, if the first abutting surface 331 and the second abutting surface 421 are both planes, the first abutting surface 331 and the second abutting surface 421 may not be able to fit tightly together, thereby causing the first clamping member 3 and the second clamping member 4 to be unable to clamp the throat 21, thereby affecting the installation stability of the nozzle assembly 2 on the heat sink 1.

[0123] In the above embodiment, at least one of the first abutting surface 331 and the second abutting surface 421 is set to be a non-planar surface, so that the first abutting surface 331 and the second abutting surface 421 can be tightly attached to each other, so that the first clamping member 3 and the second clamping member 4 can clamp the throat 21, thereby improving the installation stability of the nozzle assembly 2 on the heat sink 1.

[0124] Specifically, at least one groove may be provided on the inner side surface of the first locking end 33 and / or the second locking end 42 , so that the first abutting surface 331 and / or the second abutting surface 421 forms a non-planar surface.

[0125] The embodiment of the utility model further provides a three-dimensional printer, comprising a print head based on the above.

[0126] The three-dimensional printer provided by the embodiment of the utility model includes a print head, so the three-dimensional printer has all the beneficial effects of the print head, which will not be described in detail here.

[0127] Label 1. A print head, comprising:

[0128] Heat sink 1;

[0129] Nozzle assembly 2;

[0130] A first clamping member 3 and a second clamping member 4, the first clamping member 3 and the second clamping member 4 are respectively movably connected to the heat sink 1, one end of the first clamping member 3 and one end of the second clamping member 4 can be close to or away from each other, and the first clamping member 3 and the second clamping member 4 have a clamping state of being close to each other to clamp the nozzle assembly 2, and a releasing state of being away from each other to release the nozzle assembly 2;

[0131] The locking member 5 is used to connect with the first clamping member 3 and the second clamping member 4 so as to keep the first clamping member 3 and the second clamping member 4 in the clamping state.

[0132] Label 2, based on the print head of label 1,

[0133] The locking member 5 is used to move between a locking position and an unlocking position relative to the first clamping member 3 and the second clamping member 4; in the locking position, the locking member 5 locks the first clamping member 3 and the second clamping member 4 in a clamping state; in the unlocking position, the locking member 5 releases the first clamping member 3 and the second clamping member 4, so that the first clamping member 3 and the second clamping member 4 are switched to a released state;

[0134] The locking member 5 comprises a main body 51;

[0135] When the first clamping member 3 and the second clamping member 4 are in a clamping state, the main body 51 is used to be mounted on or detached from the outside of the first clamping member 3 and the second clamping member 4 to switch between a locked position and an unlocked position;

[0136] In the locked position, the first clamping member 3 and the second clamping member 4 are confined in the main body 51;

[0137] In the unlocking position, the body 51 is used to disengage from the first clamping member 3 and the first clamping member 3 .

[0138] Label 3, based on the print head of label 1,

[0139] The locking member 5 is used to move between a locking position and an unlocking position relative to the first clamping member 3 and the second clamping member 4; in the locking position, the locking member 5 locks the first clamping member 3 and the second clamping member 4 in a clamping state; in the unlocking position, the locking member 5 releases the first clamping member 3 and the second clamping member 4, so that the first clamping member 3 and the second clamping member 4 are switched to a released state;

[0140] The locking member 5 comprises a main body 51, and at least one protrusion 511 is arranged on the inner wall surface of the main body 51;

[0141] When the first clamping member 3 and the second clamping member 4 are in a clamping state, the main body 51 is sleeved on the outside of the first clamping member 3 and the second clamping member 4, and the main body 51 is used to rotate relative to the first clamping member 3 and the second clamping member 4 to switch between a locked position and an unlocked position;

[0142] In the locked position, if there is only one protrusion 511, the first clamping member 3 and the second clamping member 4 are located between the protrusion 511 and the inner wall of the main body 51; if there are multiple protrusions 511, the multiple protrusions 511 are arranged at intervals along the circumference of the main body 51, and the first clamping member 3 and the second clamping member 4 are located between any two protrusions 511;

[0143] In the unlocking position, the first clamping member 3 or the first clamping member 3 is disengaged from the protrusion 511 .

[0144] Label 4, based on the print head of label 3,

[0145] The protrusion 511 includes a limiting surface 5111, and the limiting surface 5111 is used to abut against the first clamping member 3 or the second clamping member 4, and the limiting surface 5111 is a concave arc surface;

[0146] The limiting surface 5111 and the inner wall surface of the main body 51 are in smooth transition.

[0147] Label 5, a print head based on label 3,

[0148] A limit block 31 is provided at the end of at least one of the first clamping member 3 and the second clamping member 4. The limit block 31 extends outward based on the outer side wall of the first clamping member 3 or the second clamping member 4.

[0149] At least one recess 512 is provided on the inner wall surface of the main body 51, and the recess 512 passes through two end surfaces of the main body 51;

[0150] In the locked position, the limit block 31 is misaligned with the recess 512, and the limit block 31 is engaged with the main body 51;

[0151] In the unlocked position, the limit block 31 corresponds to the recess 512 ; the recess 512 is used to avoid the limit block 31 when the main body 51 is separated from or sleeved on the outside of the first clamping member 3 and the second clamping member 4 .

[0152] Label 6, a print head based on label 5,

[0153] At least one protrusion 511 and at least one recess 512 are arranged adjacent to each other;

[0154] There is a smooth transition between the protrusion 511 and the depression 512 that are arranged adjacent to each other.

[0155] Label 7, a print head based on label 3,

[0156] When the main body 51 rotates from the locked position to the unlocked position, or when the main body 51 rotates from the unlocked position to the locked position, the rotation angle of the main body 51 is 90°.

[0157] Label 8, a print head based on label 3,

[0158] The outer periphery of the main body 51 is provided with an anti-slip member 52;

[0159] The outer peripheral surface of the anti-slip member 52 is a wavy surface.

[0160] Reference numeral 9, a print head according to reference numeral 3,

[0161] The first clamping member 3 and the second clamping member 4 are both rotatably connected to the heat sink 1 , and the first clamping member 3 and the second clamping member 4 are used to rotate relative to the heat sink 1 to switch between a clamping state and a releasing state.

[0162] Reference numeral 10, a print head according to reference numeral 9,

[0163] The heat sink 1 is provided with a mounting channel 11;

[0164] The nozzle assembly 2 includes a throat 21, which is pluggable and inserted into the installation channel 11;

[0165] In the clamping state, the first clamping member 3 and the second clamping member 4 clamp the throat 21;

[0166] In the released state, the first clamp 3 and the second clamp 4 release the throat 21 .

[0167] Reference numeral 11, a print head according to reference numeral 10,

[0168] The heat sink 1 includes a first heat sink 12 and a second heat sink 13 connected to each other. The mounting channel 11 penetrates the first heat sink 12 and the second heat sink 13. A gap 14 communicating with the mounting channel 11 is provided between the first heat sink 12 and the second heat sink 13.

[0169] The throat 21 includes a clamping section, which is exposed through the gap 14;

[0170] The first clamping member 3 includes a first connecting end 32, and the second clamping member 4 includes a second connecting end 41. The first connecting end 32 and the second connecting end 41 are located in the gap 14 and are rotatably connected to the first heat sink 12 and / or the second heat sink 13 respectively.

[0171] In the clamping state, the first connection end 32 and the second connection end 41 clamp the clamping section;

[0172] In the released state, the first connection end 32 and the second connection end 41 release the clamping section.

[0173] Reference numeral 12, a print head according to reference numeral 11,

[0174] The clamping section is provided with a first clamping piece; the first connecting end 32 and the second connecting end 41 are both provided with a second clamping piece;

[0175] In the clamping state, the first clamping member and the second clamping member are clamped and connected;

[0176] In the released state, the first clamping member and the second clamping member are separated.

[0177] Reference numeral 13, a print head according to reference numeral 12,

[0178] One of the first clamping member and the second clamping member is a clamping groove 211, and the other of the first clamping member and the second clamping member is a clamping plate 321;

[0179] In the clamping state, the clamping plate 321 is clamped in the clamping slot 211;

[0180] In the released state, the engaging plate 321 is separated from the engaging slot 211 .

[0181] Reference numeral 14, a print head according to reference numeral 11,

[0182] The first clamping member 3 further includes a first locking end 33 opposite to the first connecting end 32; the second clamping member 4 further includes a second locking end 42 opposite to the second connecting end 41;

[0183] The first locking end 33 and the second locking end 42 extend out of the gap 14;

[0184] The main body 51 is sleeved on the outside of the first locking end 33 and the second locking end 42 .

[0185] Reference numeral 15, a print head according to reference numeral 14,

[0186] The first locking end 33 includes a first abutting surface 331 , and the second locking end 42 includes a second abutting surface 421 , and at least one of the first abutting surface 331 and the second abutting surface 421 is a non-planar surface;

[0187] In the clamping state, the first abutting surface 331 and the second abutting surface 421 abut against each other.

[0188] Label 16. A three-dimensional printer, comprising: a print head based on any one of labels 1 to 15.

[0189] See also Fig.14 In other embodiments, the print head of the present application has only one first clamping member 3 and one second clamping member 4, such as the print head only includes the first clamping member 3, and the clamping state of the first clamping member 3 is not maintained by the locking member 5, but the elastic member 6 is used to limit the position and state of the first clamping member. Specifically, the print head of the embodiment of the present application includes a heat sink 1, a nozzle assembly 2, a first clamping member 3 and an elastic member 6. Among them, the nozzle assembly 2 is detachably connected to the heat sink 1, and the first clamping member 3 is rotatably connected to the heat sink 1 so as to be rotatably located in a clamping state and a released state. In the clamping state, the first clamping member 6 fixes the position of the nozzle assembly 2 to prevent the nozzle assembly 2 from moving, and in the released state, the first clamping member releases the fixation of the nozzle assembly 2. The elastic member 6 is connected to the first clamping member 3 and the heat sink 1, and the elastic member 6 is used to give the first clamping member 3 a force to transform from a released state to a clamping state.

[0190] The elastic member 6 may be a spring.

[0191] How the first clamping member 3 fixes the nozzle assembly is not described in detail in this application. For example, the solution of the above embodiment can be adopted to clamp the nozzle assembly. This application does not limit the specific connection method.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A print head, characterized in that: include: Heat sink; Nozzle assembly; A first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are respectively movably connected to the heat sink, one end of the first clamping member and one end of the second clamping member can be close to or away from each other, and the first clamping member and the second clamping member have a clamping state in which they are close to each other to clamp the nozzle assembly, and a releasing state in which they are away from each other to release the nozzle assembly; A locking member, wherein the locking member is used to connect with the first clamping member and the second clamping member so as to keep the first clamping member and the second clamping member in the clamping state.

2. The print head according to claim 1, characterized in that: The locking member is used to move between a locking position and an unlocking position relative to the first clamping member and the second clamping member; in the locking position, the locking member locks the first clamping member and the second clamping member in the clamping state; In the unlocking position, the locking member releases the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are switched to the released state; The locking member comprises a main body; When the first clamping member and the second clamping member are in the clamping state, the main body is used to be mounted on or detached from the outside of the first clamping member and the second clamping member to switch between the locking position and the unlocking position; In the locking position, the first clamping member and the second clamping member are confined within the main body; In the unlocked position, the body is used to disengage the first clamp and the second clamp.

3. The print head according to claim 1, characterized in that: The locking member is used to move between a locking position and an unlocking position relative to the first clamping member and the second clamping member; in the locking position, the locking member locks the first clamping member and the second clamping member in the clamping state; In the unlocking position, the locking member releases the first clamping member and the second clamping member, so that the first clamping member and the second clamping member are switched to the released state; The locking member comprises a main body, and at least one protrusion is arranged on the inner wall surface of the main body; When the first clamping member and the second clamping member are in the clamping state, the main body is sleeved on the outside of the first clamping member and the second clamping member, and the main body is used to rotate relative to the first clamping member and the second clamping member to switch between the locking position and the unlocking position; In the locking position, if the number of the protrusion is one, the first clamping member and the second clamping member are limited to be located between the protrusion and the inner wall of the main body; if the number of the protrusion is multiple, the multiple protrusions are arranged at intervals along the circumference of the main body, and the first clamping member and the second clamping member are limited to be located between any two of the protrusions; In the unlocked position, the first clamping member or the first clamping member is disengaged from the protrusion.

4. The print head according to claim 3, characterized in that: The protrusion includes a limiting surface, the limiting surface is used to abut against the first clamping member or the second clamping member, and the limiting surface is a concave arc surface; The limiting surface and the inner wall surface of the main body are in smooth transition.

5. The print head according to claim 3, characterized in that: A limit block is provided at an end of at least one of the first clamping member and the second clamping member, and the limit block extends outward based on an outer side wall of the first clamping member or the second clamping member; At least one recess is provided on the inner wall surface of the main body, and the recess passes through two end surfaces of the main body; In the locking position, the limit block is misaligned with the recess, and the limit block is clamped to the main body; In the unlocking position, the limit block corresponds to the recess; the recess is used to avoid the limit block when the main body is separated from or sleeved on the outside of the first clamping member and the second clamping member.

6. The print head according to claim 5, characterized in that: At least one of the protrusions and at least one of the recesses are arranged adjacent to each other; There is a smooth transition between the protrusion and the depression which are arranged adjacent to each other.

7. The print head according to claim 3, characterized in that: When the main body rotates from the locking position to the unlocking position, or when the main body rotates from the unlocking position to the locking position, the rotation angle of the main body is 90°.

8. The print head according to claim 3, characterized in that: The outer periphery of the main body is provided with an anti-slip member; The outer peripheral surface of the anti-slip part is a wavy surface.

9. The print head according to claim 3, characterized in that: The first clamping member and the second clamping member are both rotatably connected to the heat sink, and the first clamping member and the second clamping member are used to rotate relative to the heat sink to switch between the clamping state and the releasing state.

10. The print head according to claim 9, characterized in that: The heat sink is provided with a mounting channel; The nozzle assembly includes a throat pipe, and the throat pipe is pluggable and inserted into the installation channel; In the clamping state, the first clamping member and the second clamping member clamp the throat; In the released state, the first clamp and the second clamp release the throat.

11. The print head according to claim 10, characterized in that: The heat sink comprises a first heat sink and a second heat sink connected to each other, the mounting channel runs through the first heat sink and the second heat sink, and a gap communicating with the mounting channel is provided between the first heat sink and the second heat sink; The throat includes a clamping section, and the clamping section is exposed through the gap; The first clamping member includes a first connecting end, and the second clamping member includes a second connecting end, the first connecting end and the second connecting end are located in the gap and are rotatably connected to the first heat sink and / or the second heat sink respectively; In the clamping state, the first connection end and the second connection end clamp the clamping section; In the released state, the first connection end and the second connection end release the clamping section.

12. The print head according to claim 11, characterized in that: The clamping section is provided with a first clamping piece; the first connecting end and the second connecting end are both provided with a second clamping piece; In the clamping state, the first clamping member and the second clamping member are engaged and connected; In the released state, the first clamping member and the second clamping member are separated.

13. The print head according to claim 12, characterized in that: One of the first clamping member and the second clamping member is a clamping groove, and the other of the first clamping member and the second clamping member is a clamping plate; In the clamping state, the clamping plate is clamped in the clamping slot; In the released state, the clamping plate is disengaged from the clamping slot.

14. The print head according to claim 11, characterized in that: The first clamping member further comprises a first locking end opposite to the first connecting end; the second clamping member further comprises a second locking end opposite to the second connecting end; The first locking end and the second locking end extend out of the gap; The main body is sleeved on the outside of the first locking end and the second locking end.

15. The print head according to claim 14, characterized in that: The first locking end includes a first abutment surface, the second locking end includes a second abutment surface, and at least one of the first abutment surface and the second abutment surface is a non-planar surface; In the clamping state, the first abutting surface and the second abutting surface abut against each other.

16. A three-dimensional printer, characterized in that: include: A print head as claimed in any one of claims 1 to 15.

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