Printing device with replaceable printhead

Abstract

The present disclosure provides a printing device with replaceable printhead, which comprises a printhead module and a base module that are separably mounted together, the printhead module comprising a printhead and a first magnetic element provided with a first taper surface. The base module comprises a base and a second magnetic element provided with a second taper surface. The first magnetic element is configured to be magnetically connected to the second magnetic element, so that the first taper surface and the second taper surface cooperate with each other, thereby positioning the printhead to the base. In this way, the printing device can have higher printing efficiency.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of printing, and in particular to a printing device with replaceable printheads. BACKGROUND

[0002] Inkjet, EHD printing equipment is the key equipment in the deposition of nano-material inkjet printing, and is also a high-precision equipment combined with multiple disciplines such as machinery, electricity, software and vision. Among them, the printhead component is the key executive component of the printing equipment, and the printhead in the printhead component is the final actuator of the printing equipment. By controlling the occurrence of the droplets of the printhead, high-precision printing of the printing product can be realized.

[0003] It is known that the existing printhead is fixed by using fasteners. For example, US20110063368A1 discloses a multi-inkjet head package. The head plate accommodating the inkjet head is preliminarily fixed on the bracket by a preliminary fixing part, and then completely fixed by a screw. For another example, CN110177694A discloses a printed electronic printing device. The printhead mounting portion is formed through the printhead bracket, and the printhead bracket is formed with a gap communicating with the printhead mounting portion. The gap adjusting component is used to adjust the interval of the gap.

[0004] However, the above fixing methods affect the printing efficiency of the printing equipment. On the one hand, the positioning error of the printhead is large, and the printhead needs to be re-aligned to the zero point of the printing coordinate after each replacement. On the other hand, the process of replacing the printhead is relatively cumbersome, especially the need to screw the fastener, which makes the replacement process time-consuming and laborious. SUMMARY

[0005] The present disclosure is made in view of the above state of the art. The purpose of the present disclosure is to provide a printing device with replaceable printheads, which can overcome at least one of the disadvantages described in the background art.

[0006] In order to achieve the above-mentioned purpose, the present disclosure can adopt the following technical solutions.

[0007] The present application provides a printing device with replaceable printheads, which comprises a printhead module and a base module that can be mounted together separately from each other, the printhead module comprising a printhead and a first magnetic element provided with a first taper surface, the base module comprising a base and a second magnetic element provided with a second taper surface, the first magnetic element being configured to be magnetically connected to the second magnetic element, so that the first taper surface and the second taper surface cooperate with each other, thereby positioning the printhead on the base.

[0008] In at least one possible implementation, the first magnetic element and the second magnetic element are ring-shaped, the first taper surface is an outer taper surface disposed at an outer periphery of the first magnetic element, the second taper surface is an inner taper surface disposed at an inner periphery of the second magnetic element, and the first magnetic element is sleeved on the showerhead.

[0009] In at least one possible implementation, the showerhead module further comprises a first connector, and the base module further comprises a second connector,

[0010] In a case where the first magnetic element is magnetically connected to the second magnetic element, the first connector is connected to the second connector, and relative rotation of the first magnetic element and the second magnetic element is prevented.

[0011] In at least one possible implementation, the first connector is configured to be able to be plugged into the second connector, and / or

[0012] The first connector is configured to be able to be magnetically connected to the second connector.

[0013] In at least one possible implementation, the first connector is electrically connected to the showerhead and is configured to be able to be electrically connected to the second connector.

[0014] In at least one possible implementation, the showerhead module further comprises a heater, the heater is thermally connected to the showerhead and is electrically connected to the first connector.

[0015] In at least one possible implementation, the base module further comprises a temperature sensor,

[0016] In a case where the first magnetic element is magnetically connected to the second magnetic element, the temperature sensor is thermally connected to the showerhead.

[0017] In at least one possible implementation, the showerhead module further comprises a housing, the housing accommodates the showerhead and is provided with a temperature monitoring hole,

[0018] The temperature monitoring hole is configured to be able to receive the temperature sensor, so that the temperature sensor is thermally connected to the showerhead via the housing.

[0019] In at least one possible implementation, the printing device further comprises a container module, the container module is detachably connected to the showerhead module, the container module comprises a container for accommodating a printing material, and the container is configured to be able to supply the printing material to the showerhead.

[0020] In at least one possible implementation, the showerhead module further comprises one or more third magnetic elements, and the container module further comprises one or more fourth magnetic elements, the third magnetic elements being configured to magnetically connect to the fourth magnetic elements.

[0021] With the above technical solution, by matching the first taper and the second taper with each other, the first magnetic element and the second magnetic element can simultaneously position the showerhead in the axial and radial directions thereof, so that the showerhead can have higher positioning accuracy. In addition, by magnetically connecting the first magnetic element and the second magnetic element, when replacing the showerhead, it is not necessary to screw fasteners, but only to make the first magnetic element and the second magnetic element approach and move away from each other, so that the showerhead is easy to replace. In this way, the printing device can have higher printing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of a printing device with replaceable showerheads according to one embodiment of the present disclosure.

[0023] Figure 2 is a front view of the printing device in Figure 1

[0024] Figure 3 is a schematic view of the printing device in Figure 1 , wherein part of the showerhead module is omitted, and the shown showerhead module is connected to the base module.

[0025] Figure 4 is a schematic view of the printing device in Figure 1 , wherein part of the showerhead module is omitted, and the shown showerhead module is separated from the base module.

[0026] Figure 5 and Figure 6 is a schematic view of the printing device in Figure 1 , wherein the showerhead module is shown in an exploded manner.

[0027] Figure 7 is a sectional view of a partial enlarged view of the showerhead module and the base module of the printing device in Figure 1

[0028] Figure 8 is a bottom view of the showerhead module of the printing device in Figure 1

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 30 printing device

[0031] 32 showerhead module

[0032] 34 base module ​​​

[0033] 36 spray head

[0034] 38 first magnetic element

[0035] 40 first tapered surface

[0036] 42 base

[0037] 44 second magnetic element

[0038] 46 second tapered surface

[0039] 48 first connector

[0040] 50 second connector

[0041] 52 heater

[0042] 54 temperature sensor

[0043] 56 housing

[0044] 58 temperature monitoring aperture

[0045] 60 main body

[0046] 62 gland

[0047] 64 container module

[0048] 66 container

[0049] 68 third magnetic element

[0050] 70 fourth magnetic element

[0051] 72 protrusion

[0052] 74 recess

[0053] 76 interface

[0054] 78 step

[0055] 80 groove

[0056] 82 fastener

[0057] 84 fastener

[0058] 86 pneumatic fitting

[0059] 88 seal plug

[0060] 90 conduit

[0061] 92 fitting

[0062] 94 viewing window

[0063] 96 connecting element

[0064] 98 mounting hole DETAILED DESCRIPTION

[0065] As shown in Figure 1 and Figure 2 , the present embodiment provides a printing device 30 with replaceable print heads.

[0066] As shown in Figures 1 to 8 , the printing device 30 includes a print head module 32 and a base module 34 that are separably mountable to each other. The print head module 32 includes a print head 36 and a first magnetic element 38 provided with a first tapered surface 40. The base module 34 includes a base 42 and a second magnetic element 44 provided with a second tapered surface 46. The first magnetic element 38 is configured to be magnetically connectable to the second magnetic element 44 such that the first tapered surface 40 and the second tapered surface 46 cooperate with each other to position the print head 36 to the base 42. Here, the magnetic element refers to an element including a magnetic material, and the magnetic connection refers to a connection by magnetic force. It is to be understood that the magnetic element is not limited to being made of only a magnetic material, and can include a non-magnetic material, for example, can include plastic.

[0067] In the above technical solution provided by the present embodiment, by causing the first tapered surface 40 and the second tapered surface 46 to cooperate with each other, the first magnetic element 38 and the second magnetic element 44 can simultaneously position the print head 36 in the axial and radial directions thereof, so that the print head 36 can have a higher positioning accuracy. In addition, by magnetically connecting the first magnetic element 38 and the second magnetic element 44, when replacing the print head 36, it is only necessary to cause the first magnetic element 38 and the second magnetic element 44 to approach and move away from each other, without the need to screw fasteners, so that the print head 36 is easy to replace. In this way, the printing device 30 can have a higher printing efficiency.

[0068] In some examples, as shown in Figures 3 to 8 , one of the first magnetic element 38 and the second magnetic element 44 includes a permanent magnetic material, and the other of the first magnetic element 38 and the second magnetic element 44 includes a soft magnetic material. For example, the soft magnetic material can be martensitic stainless steel. In other examples, the first magnetic element 38 and the second magnetic element 44 can both include a permanent magnetic material.

[0069] In some examples, as shown in Figures 1 to 4 , the base module 34 includes a plurality of second magnetic elements 44, and a plurality of print head modules 32 are each connectable to the same base module 34 via different second magnetic elements 44. Here, the plurality of print head modules 32 do not have to be completely identical, for example, the types or calibers of the print heads 36 can be different.

[0070] In some examples, as shown in Figures 3 to 8 , the first magnetic element 38 and the second magnetic element 44 are configured to be magnetically connectable to each other in a plurality of positions.As shown, the first magnetic element 38 is fixedly connected to the showerhead 36, and the second magnetic element 44 is fixedly connected to the susceptor 42.

[0071] In some examples, as shown in Figure 1 , Figure 3 and Figure 4 , the susceptor module 34 further comprises a connecting element 96. The connecting element 96 is configured to connect the susceptor 42 to a driver for driving the susceptor 42 to move. For example, the connecting element 96 can be connected to the susceptor 42 via a fastener.

[0072] In some examples, as shown in Figure 1 , Figure 3 and Figure 4 , the connecting element 96 is provided with an oblong mounting hole 98. The mounting hole 98 is used to receive a fastener by which the connecting element 96 can be connected to the driver mentioned above. In this way, by providing the oblong mounting hole 98, the susceptor module 34 can be adapted to different drivers.

[0073] In some examples, as shown in Figures 3 to 7 , the first magnetic element 38 and the second magnetic element 44 are annular. The first taper surface 40 is an outer taper surface provided at an outer periphery of the first magnetic element 38, and the second taper surface 46 is an inner taper surface provided at an inner periphery of the second magnetic element 44. The first magnetic element 38 is sleeved on the showerhead 36. In this way, the first magnetic element 38, the second magnetic element 44 and the showerhead 36 can be arranged more compactly.

[0074] In some examples, as shown in Figure 5 and Figure 6 , the showerhead 36 and the first magnetic element 38 are coaxially arranged.

[0075] In some examples, as shown in Figure 2 , the showerhead 36 penetrates the second magnetic element 44 in the case where the first magnetic element 38 is magnetically connected to the second magnetic element 44.

[0076] In some examples, as shown in Figure 3 , Figure 4 and Figure 8 , the showerhead module 32 further comprises a first connector 48, and the susceptor module 34 further comprises a second connector 50. In the case where the first magnetic element 38 is magnetically connected to the second magnetic element 44, the first connector 48 is connected to the second connector 50, preventing the first magnetic element 38 and the second magnetic element 44 from rotating relative to each other. In this way, the first connector 48 and the second connector 50 can position the showerhead 36 in the circumferential direction of the first magnetic element 38 and the second magnetic element 44, thereby further improving the positioning accuracy of the showerhead 36.

[0077] In some examples, asFigure 3 、 Figure 4 and Figure 8 As shown in

[0078] Here, the first connector 48 is “fixedly” connected to the showerhead 36 means that the first connector 48 is integrally fixedly connected to the showerhead 36, without excluding that a portion of the first connector 48 can be movable. For example, the first connector 48 can comprise a spring piece, an elastic tongue, an elastic pin, a spring needle, etc. The same applies to the second connector 50 being “fixedly” connected to the susceptor 42.

[0079] In some examples, as shown in Figure 3 、 Figure 4 and Figure 8 the first connector 48 is configured to be able to be plugged into the second connector 50. In this way, the first connector 48 and the second connector 50 can be reliably connected to each other, such that the circumferential positioning of the first connector 48 and the second connector 50 to the showerhead 36 is less likely to fail.

[0080] In some examples, as shown in Figure 3 、 Figure 4 and Figure 8 one of the first connector 48 and the second connector 50 is provided with a protrusion 72, and the other of the first connector 48 and the second connector 50 is provided with a recess 74. The recess 74 is configured to be able to receive the protrusion 72, so as to enable the first connector 48 and the second connector 50 to be plugged into each other. For example, the first connector 48 can be provided with the protrusion 72, and the second connector 50 can be provided with the recess 74.

[0081] In some examples, as shown in Figure 3 、 Figure 4 and Figure 8 the protrusion 72 protrudes in a direction parallel to the axial direction of the first magnetic element 38, and the recess 74 is recessed in a direction parallel to the axial direction of the second magnetic element 44.

[0082] In some examples, as shown in Figure 3 、 Figure 4 and Figure 8 the first connector 48 is configured to be able to be magnetically connected to the second connector 50. In this way, the first connector 48 and the second connector 50 can be more reliably connected by means of magnetic force, so as to be able to further reduce the risk of circumferential positioning failure.

[0083] In some examples, as shown in Figures 3 to 6 、 Figure 8 and Figure 3As shown, the first connector 48 and the second connector 50 comprise magnetic elements. For example, one of the first connector 48 and the second connector 50 can comprise a permanent magnetic material, and the other of the first connector 48 and the second connector 50 can comprise a soft magnetic material. In other embodiments, the first connector 48 and the second connector 50 can each comprise a permanent magnetic material.

[0084] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 4 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 8 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other.

[0085] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 6 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 8 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 6 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other.

[0086] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figures 3 to 6 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 3 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other.

[0087] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 4 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other.

[0088] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 3 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other.

[0089] In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 4 In some examples, as shown in FIG. 1, the first connector 48 and the second connector 50 are electrically connected to the printhead 36 and are configured to be electrically connected to each other. Figure 3As shown, the base module 34 further includes an interface 76. The interface 76 is electrically connected to the temperature sensor 54 and the second connector 50. In this way, the power supply can supply power to the showerhead 36, the heater 52, and the temperature sensor 54 via the interface 76. In addition, the interface 76 can transmit signals and data between the host computer and the showerhead 36, the temperature sensor 54, so that the host computer can control the heater 52 and the showerhead 36 according to the data.

[0090] In some examples, as shown in Figure 4 and Figure 8 , the base module 34 further includes a circuit board (PCB), and the second connector 50, the temperature sensor 54, and the interface 76 are integrated on the circuit board. For example, the circuit board can be received in the interior of the base 42.

[0091] In some examples, as shown in Figure 3 , Figure 4 and Figure 8 , the showerhead module 32 further includes a housing 56. The housing 56 accommodates the showerhead 36 and is provided with a temperature monitoring hole 58. The temperature monitoring hole 58 is configured to be capable of receiving the temperature sensor 54, so that the temperature sensor 54 is thermally connected to the showerhead 36 via the housing 56. In this way, the showerhead 36 and the temperature sensor 54 can have a small thermal resistance, so that the measurement error of the temperature sensor 54 can be reduced.

[0092] In some examples, as shown in Figures 1 to 8 , Figure 8 and Figure 5 , the temperature monitoring hole 58 is a blind hole, and the axial direction of the temperature monitoring hole 58 is parallel to the axial direction of the first magnetic element 38. For example, the axial length of the temperature monitoring hole 58 can be 3mm to 4mm.

[0093] In some examples, as shown in Figure 6 , the housing 56 is made of an aluminum alloy. In this way, the housing 56 can have a high thermal conductivity, so that the thermal resistance between the showerhead 36 and the temperature sensor 54 can be further reduced.

[0094] In some examples, as shown in Figure 5 , the first connector 48 is fixedly connected to the showerhead 36 via the housing 56.

[0095] In some examples, as shown in Figure 6 and Figures 4 to 7 , the showerhead 36 is detachably connected to the housing 56. For example, the housing 56 can include a main body 60 and a gland 62. The gland 62 is detachably connected to the main body 60, for example, connected to the main body 60 by a fastener 82, and clamps the showerhead 36 together with the main body 60. In this way, the showerhead 36 is convenient to replace and clean.

[0096] In some examples, as shown in FIG. 1, the printing device 30 includes a heater 52. The heater 52 is configured to heat the printing material. The heater 52 is configured to heat the printing material before the printing material is supplied to the ejection head 36. In some examples, the heater 52 is configured to heat the printing material to a temperature of 50- 100°C. Figure 5 In some examples, as shown in FIG. 2, the housing 56 is provided with a step portion 78. The ejection head 36 is abutted to the step portion 78, such that the ejection head 36 is limited in its axial direction. For example, the step portion 78 can be provided on the main body 60.

[0097] In some examples, as shown in FIG. 3, the heater 52 is provided between the main body 60 and the cover 62. Figure 6

[0098] In some examples, as shown in FIG. 4, a surface of the housing 56 is provided with a groove 80. For example, two grooves 80 can be arranged opposite to each other, and the ejection head 36 can be arranged between the two grooves 80. In this way, the ejection head module 32 is facilitated to be held, especially to help the user to overcome the magnetic force between the first magnetic element 38 and the second magnetic element 44. Figure 8

[0099] In some examples, as shown in FIG. 5, the first magnetic element 38 can be detachably connected to the housing 56, for example, can be connected to the main body 60 via a fastener 84. Figure 1 Figures 3 to 7 Figure 1 In some examples, as shown in FIG. 6, the printing device 30 further includes a container module 64. The container module 64 is detachably connected to the ejection head module 32. The container module 64 includes a container 66 for containing the printing material, the container 66 is configured to supply the printing material to the ejection head 36. In this way, by connecting the container module 64 to the ejection head module 32, the occupation of the ejection head 36 to the external container (the container that does not move with the ejection head 36) can be reduced. Furthermore, by making the ejection head module 32 and the container module 64 detachable, the printing material can be conveniently replaced and the container 66 can be conveniently cleaned.

[0100] In some examples, the printing material is a liquid. Figures 3 to 7 Figures 1 to 7 In some examples, as shown in FIG. 7, the container 66 is configured to be thermally connected to the heater 52, for example, can be thermally connected to the heater 52 via the housing 56. In this way, the printing material can be preheated by the heater 52 before the printing material is supplied to the ejection head 36, so as to save the heating time, thereby further improving the printing efficiency.

[0101] In some examples, the container 66 is provided with an input end and an output end. The input end is used to receive the gas for pumping the printing material, and the output end is used to output the printing material.

[0102] In some examples, as shown in FIG. 8, the container 66 is provided with a first input end and a second input end. The first input end is used to receive the gas for pumping the printing material, and the second input end is used to receive the gas for heating the printing material. Figures 1 to 7 Figure 1 In some examples, as shown in FIG. 9, the container 66 is provided with a first output end and a second output end. The first output end is used to output the printing material, and the second output end is used to output the gas for heating the printing material.

[0103] In some examples, the container 66 is provided with an input end and an output end. The input end is used to receive the gas for pumping the printing material, and the output end is used to output the printing material.

[0104] In some examples, as shown in FIG. 10, the container 66 is provided with a first input end and a second input end. The first input end is used to receive the gas for pumping the printing material, and the second input end is used to receive the gas for heating the printing material. Figures 3 to 7 ​​​​​​As shown, the container module 64 may further include a pneumatic connector 86 and a sealing plug 88. The pneumatic connector 86 is provided at the input end of the container 66, and the sealing plug 88 is provided at the output end of the container 66. For example, the sealing plug 88 may be made of silicone.

[0105] In some examples, such as Figure 5 As shown, the printing device 30 further includes a conduit 90 (only partially shown), which is connected between the nozzle 36 and the container 66. In this way, the printing material in the container 66 can be supplied to the nozzle 36 via the conduit 90.

[0106] In some examples, such as Figure 6 As shown, the conduit 90 is detachably connected to the spray head 36 and the container 66. For example, one end of the conduit 90 can be connected to the spray head 36 via a rotatable joint 92, and the other end of the conduit 90 can pass through the sealing plug 88 and extend into the container 66.

[0107] In some examples, such as Figure 5 as well as Figure 6 As shown, the container 66 also includes an observation window 94 covered with a transparent material, for example, the observation window 94 can be covered with glass. Like this, the use of the printing material can be known through the observation window 94, so that the printing material is replenished in the container 66 in time.

[0108] In some examples, such as Figure 5 and Figure 6 As shown, the spray head module 32 further includes one or more third magnetic elements 68, and the container module 64 further includes one or more fourth magnetic elements 70. The third magnetic elements 68 are configured to be magnetically connected to the fourth magnetic elements 70. In this way, the container module 64 can be easily connected to and separated from the spray head module 32.

[0109] In some examples, such as Figure 5 and Figure 6 As shown, the plurality of third magnetic elements 68 and the plurality of fourth magnetic elements 70 correspond one to one. It should be understood that Figure 5 and Figure 6 There are the third magnetic element 68 and the fourth magnetic element 70 that are blocked, Figure 5 The third magnetic element 68 shown in FIG. Figure 6 Corresponding to the fourth magnetic element 70 shown in FIG.

[0110] In some examples, such as ​ and ​ As shown, one of the third magnetic element 68 and the fourth magnetic element 70 includes a permanent magnetic material, and the other of the third magnetic element 68 and the fourth magnetic element 70 includes a soft magnetic material. In other examples, the third magnetic element 68 and the fourth magnetic element 70 may both include a permanent magnetic material.

[0111] In some examples, as shown in FIG. 1, the third magnetic element 68 is fixedly connected to the spray head 36, and the fourth magnetic element 70 is fixedly connected to the container 66. For example, the third magnetic element 68 can be fixedly connected to the spray head 36 via the housing 56. ​ ​ As shown in FIG. 1, the third magnetic element 68 is fixedly connected to the spray head 36, and the fourth magnetic element 70 is fixedly connected to the container 66. For example, the third magnetic element 68 can be fixedly connected to the spray head 36 via the housing 56.

[0112] The terminology used by the embodiments of the present disclosure, partly is only for the purpose of explaining the embodiments of the present disclosure, and is not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used by the embodiments of the present disclosure should be understood as the usual meaning understood by a person with ordinary skills in the art to which the present disclosure belongs. The "first", "second", and similar words used in the specification and claims of the present disclosure do not represent any order, number, or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent a quantity limit, but represent the existence of at least one. "Include" or "contain" and similar words mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly. "Multiple" means two or more, unless otherwise explicitly limited.

[0113] The above only describes optional embodiments of the present disclosure, and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the principles of the present disclosure should be included in the protection scope of the present disclosure.​

Claims

1. A printing apparatus having a replaceable printhead, characterized by comprising: The first magnetic element (38) and the second magnetic element (44) are annular, the first taper surface (40) is an outer taper surface arranged at an outer periphery of the first magnetic element (38), and the second taper surface (46) is an inner taper surface arranged at an inner periphery of the second magnetic element (44), and the first magnetic element (38) is sleeved on the nozzle (36). The nozzle module (32) further comprises a first connector (48), and the base module (34) further comprises a second connector (50), 2. The printing device of claim 1, wherein, When the first magnetic element (38) is magnetically connected to the second magnetic element (44), the first connector (48) is connected to the second connector (50), preventing the first magnetic element (38) and the second magnetic element (44) from rotating relative to each other.

3. The printing device according to claim 2, wherein The first connector (48) is configured to be inserted into the second connector (50), and / or The first connector (48) is configured to be magnetically connected to the second connector (50). The first connector (48) is electrically connected to the nozzle (36) and is configured to be electrically connected to the second connector (50).

4. The printing device of claim 2, wherein, The nozzle module (32) further comprises a heater (52), the heater (52) is thermally connected to the nozzle (36) and is electrically connected to the first connector (48).

5. The printing device of claim 4, wherein, The base module (34) further comprises a temperature sensor (54), 6. The printing device of claim 1, wherein, When the first magnetic element (38) is magnetically connected to the second magnetic element (44), the temperature sensor (54) is thermally connected to the nozzle (36). The nozzle module (32) further comprises a housing (56), the housing (56) accommodates the nozzle (36) and is provided with a temperature monitoring hole (58), 7. The printing device of claim 6, wherein, The temperature monitoring hole (58) is configured to accommodate the temperature sensor (54) so that the temperature sensor (54) is thermally connected to the nozzle (36) via the housing (56). ​ 8. The printing device of claim 1, wherein, The printing device further comprises a container module (64) detachably connectable to the head module (32), the container module (64) comprising a container (66) for containing a printing material, the container (66) being configured to supply the printing material to the head (36).

9. The printing device of claim 8, wherein, The head module (32) further comprises one or more third magnetic elements (68), the container module (64) further comprising one or more fourth magnetic elements (70), the third magnetic elements (68) being configured to magnetically connect to the fourth magnetic elements (70).

Images