CN114536745A

CN114536745A - 3D printing device

Info

Publication number: CN114536745A
Application number: CN202210145762.5A
Authority: CN
Inventors: 张仕勇
Original assignee: Shenzhen Futian Culture Technology Co ltd
Current assignee: Shenzhen Futian Culture Technology Co ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-05-27

Abstract

The present invention provides a 3D printing apparatus, comprising: the device comprises a shell, a discharging assembly, a printing head supporting assembly, a printing head and a consumable material exhaustion early warning assembly, wherein the discharging assembly is connected outside the shell; wherein, the blowing subassembly is used for the load consumptive material and blowing as required, it is used for supporting and simply changing to beat printer head supporting component beat printer head, the consumptive material is used up the early warning subassembly and is used for monitoring consumptive material surplus condition on the blowing subassembly. According to the 3D printing device, the design is simplified, the equipment cost is reduced, the printing head is conveniently replaced through the printing head supporting assembly which can be easily disassembled and assembled, the simple and reliable consumable use monitoring is realized through the consumable use early warning assembly, the whole structure is simple, the device is simple and easy to use, and the device is suitable for common household or simple commercial use.

Description

3D printing device

Technical Field

The invention relates to the technical field of 3D printing, in particular to a small-sized 3D printing device.

Background

The 3D printer, english "3 dprings", 3D printing is a new word appearing in recent years for the civil market, and is a popular name, and actually, in the professional field, it has other academic names "rapid prototyping technology" (and "rapid prototyping technology", "incremental manufacturing technology", and "additive manufacturing technology"). However, existing 3D printing devices are generally used for high-precision, industrial-grade printing, and have a disadvantage of high cost for general household and simple business.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a 3D printing device which is used for solving the technical problem that the current 3D printing equipment is high in civil time cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

an embodiment of the present invention provides a 3D printing apparatus, including: the device comprises a shell, a discharging assembly, a printing head supporting assembly, a printing head and a consumable material exhaustion early warning assembly, wherein the discharging assembly is connected outside the shell; wherein, the blowing subassembly is used for the load consumptive material and blowing as required, it is used for supporting and simply changing to beat printer head supporting component beat printer head, the consumptive material is used up the early warning subassembly and is used for monitoring consumptive material surplus condition on the blowing subassembly.

Wherein the housing includes: go up casing and base, the base connect in the bottom of going up the casing, go up still to be equipped with the door that opens and shuts on the casing, still be equipped with an electric door lock in the base, electric door lock is used for controlling opening and shutting of door opens and shuts.

Wherein, electric door lock includes: the device comprises a driving device, a bolt and a position detection device, wherein the driving device is used for driving the bolt to stretch and retract, the position detection device is used for detecting the moving position of the bolt, and the driving device controls the bolt to stretch and retract according to a detection signal of the position detection device.

The driving device comprises a driving motor and a screw rod controlled by the driving motor to rotate, the bolt comprises a threaded hole, and the screw rod is in threaded connection with the threaded hole.

Wherein the printhead support assembly comprises: the printing head fixing device comprises a connecting piece, a clamping piece and a fixing block, wherein the connecting piece is provided with a jack for inserting the printing head, the clamping piece is provided with a clamping opening, the fixing block is connected onto the connecting piece, the clamping piece is detachably connected onto the connecting piece, and the clamping opening and the fixing block are close to the side wall of the printing head so as to support and fix the printing head.

The connecting piece is provided with a circuit board, the circuit board is electrically connected with the printing head, the circuit board is provided with an electric connection contact piece, the connecting piece is further provided with a supporting component, the supporting component comprises a control circuit board, the control circuit board is provided with an electric connection elastic piece, and the electric connection elastic piece is elastically abutted against the electric connection contact piece.

Wherein, still include the air supply fan, the air supply fan connect in on the clamping piece, the air supply fan air outlet is towards the position that generates heat of beating printer head, the air supply fan is the setting of an contained angle with vertical direction to the discharge gate skew that the discharge gate that beats printer head is beaten to the wind direction of air supply fan.

Wherein the consumable use-up warning assembly comprises: the device comprises a lifting plate, an elastic telescopic assembly and a position detection mechanism; the elastic telescopic assembly is connected to the lifting plate, the position detection mechanism is used for detecting the position information of the lifting plate and loading the incoming materials printed by the 3D printer on the lifting plate, and when the incoming materials are exhausted or are about to be exhausted, the lifting plate rises to enable the position detection mechanism to detect an early warning signal to stop or give an alarm.

Wherein the print head comprises: the thermal insulation guide pipe is connected to the rear end of the spray head, and the heating wire surrounds the outer portion of the side wall of the spray head.

Wherein, the heater includes: the heating device comprises a columnar heating wire net and a lead tap connected to the columnar heating wire net, wherein the columnar heating wire net surrounds the outer part of the side wall of the spray head.

According to the 3D printing device, the design is simplified, the equipment cost is reduced, the printing head is conveniently replaced through the printing head supporting assembly which can be easily disassembled and assembled, the simple and reliable consumable use monitoring is realized through the consumable use early warning assembly, the whole structure is simple, the device is simple and easy to use, and the device is suitable for common household or simple commercial use.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

Fig. 1 is a schematic overall structure diagram of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic view of another overall structure of the 3D printing apparatus according to the embodiment of the invention.

Fig. 3 is a schematic view of a 3D printing apparatus of an embodiment of the present invention with an upper housing removed.

Fig. 4 is a schematic structural diagram of a 3D printing apparatus according to an embodiment of the present invention, in which portions of an upper housing and a base bottom cover are removed.

Fig. 5 is a schematic diagram illustrating a connection state between a consumable material exhaustion warning component and an upper housing of a 3D printing apparatus according to an embodiment of the invention.

Fig. 6 is a schematic view of a connection state between a discharging assembly and a consumable exhaustion warning assembly of the 3D printing apparatus according to the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a discharging assembly of the 3D printing apparatus according to the embodiment of the invention.

Fig. 8 is a schematic structural diagram of a part of a consumable exhaustion warning component of the 3D printing apparatus according to the embodiment of the invention.

Fig. 9 is a schematic structural diagram of a part of a lifting assembly of the 3D printing apparatus according to the embodiment of the present invention.

Fig. 10 is a schematic overall structure diagram of a support mechanism of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a support mechanism of a 3D printing apparatus according to an embodiment of the present invention, with an outer shell removed.

Fig. 12 is an exploded schematic view of a support mechanism of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 13 is an exploded view of a support mechanism of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 14 is a schematic overall structure diagram of a print head of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 15 is a schematic view of another angle overall structure of a print head of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 16 is an exploded view of a print head of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 17 is a schematic structural diagram of a portion, with a thermal insulating tape removed, of a print head of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 18 is a schematic structural diagram of a nozzle part of a print head of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 19 is a schematic view of an overall structure of an electric door lock of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 20 is a schematic view of another angle overall structure of the electric door lock of the 3D printing apparatus according to the embodiment of the present invention.

Fig. 21 is an exploded view of an electric door lock of the 3D printing apparatus according to the embodiment of the present invention.

Fig. 22 is a schematic structural diagram of a part of a driving device of an electric door lock of a 3D printing device according to an embodiment of the present invention.

Fig. 23 is a schematic structural diagram of a bolt portion of an electric door lock of a 3D printing apparatus according to an embodiment of the present invention.

Fig. 24 is a schematic structural diagram of a fixing seat portion of an electric door lock of a 3D printing apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the following detailed description.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on the orientation or positional relationship illustrated in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

Referring to fig. 1 to 24, in the embodiment, a 3D printing apparatus is provided, which includes a housing 100, a discharging assembly 200 connected to an outside of the housing 100, a printhead supporting assembly 300 disposed in the housing 100, a printhead 400 connected to the printhead supporting assembly 300, and a consumable exhaustion warning assembly 600 connected to the discharging assembly 200; wherein, the blowing subassembly is used for loading the consumptive material and blowing as required, it is used for supporting and simply changing to beat printer head supporting component beat printer head, the consumptive material is used up the early warning subassembly and is used for monitoring consumptive material surplus condition on the blowing subassembly.

The housing 100 includes: go up casing 11 and base 13, base 13 connect in the bottom of going up casing 11, go up and still be equipped with opening and shutting door 12 on the casing 11, still be equipped with an electric door lock 500 in the base 13, electric door lock 500 is used for controlling opening and shutting of opening and shutting door 12.

Referring again to fig. 7, the discharging assembly 200 includes: the utility model discloses a take-up roll, but the utility model discloses a take-up roll, including pivot 23, connect in the buckle 22 of pivot 23 tip to and the suit in the material roller 21 of coiling outside the pivot 23, the consumptive material is in threadlike coiling on material roller 21, buckle 22 is fixed in material roller 21 on pivot 23, but the quick replacement consumptive material simultaneously. The buckle 22 includes a shaft connecting portion 221, the shaft connecting portion 221 is inserted into the rotating shaft 23, a protruding clamping protrusion 222 is further disposed on an outer wall of the shaft connecting portion 221, a clamping groove (not shown in the figure) is disposed on an inner wall of a shaft hole of the corresponding rotating shaft 23, and the clamping protrusion 222 is clamped in the clamping groove, so that the buckle 22 and the rotating shaft 23 can be quickly disassembled and assembled, and consumables can be quickly replaced.

Referring to fig. 10 to 13, the printhead supporting assembly 300 is fixed to the apparatus base 13 by a pair of vertical supporting rods 14, and mainly includes: the printing head fixing device comprises a supporting component 31, a clamping component 32 connected to the supporting component 31, an air supply component 33 used for supplying air and dissipating heat for the printing head fixed on the clamping component 32, and a shell 34 covering the outside of the air supply component 33, wherein the shell 34 is connected and fixed on the clamping component 32 through a bolt 35.

Wherein the clamping assembly 32 comprises: the printing head fixing device comprises a connecting piece 321, a clamping piece 332 and a fixing block 322, wherein the connecting piece 321 is provided with an insertion hole 3211 for inserting the printing head, the clamping piece 332 is provided with a clamping opening 3321, the fixing block 322 is connected to the connecting piece 321, the clamping piece 332 is detachably connected to the connecting piece 321, and the clamping opening 3321 and the fixing block 322 are abutted against the side wall of the printing head 400 so as to support and fix the printing head 400. In this embodiment, the connecting member 321 and the clamping member 332 are fixed by a screw or a bolt.

Further, the connecting member 321 is further provided with a circuit board 323, the circuit board 323 is electrically connected to the print head 400, the circuit board 323 is provided with a plurality of electrical connection contact pieces, and the electrical connection contact pieces include a power supply and a control interface.

A support assembly 31 is further disposed on the connecting member 321, and the support assembly 31 includes: the supporting mechanism 311 is connected to the control circuit board 312 on the supporting mechanism 311, the supporting mechanism 311 is connected to the supporting rod 200, the control circuit board 312 is provided with an electric connection elastic sheet, the electric connection elastic sheet is elastically abutted against the electric connection contact sheet, during assembly, the circuit board 323 and the control circuit board 312 can be quickly electrically connected only by connecting the connecting piece 321 to the supporting component 31 according to the connecting hole position, wire connection or welding is not needed, and the contact of the elastic sheet is good and reliable.

Specifically, as shown in fig. 13, the connecting member 321 is further provided with two lugs 3212, the lugs 3212 are respectively disposed on the front side and the rear side of the connecting member 321, the lugs 3212 are provided with connecting holes, and the connecting member 321 is connected to the supporting assembly 31 through the connecting holes by bolts 35.

The air supply assembly 33 is a blower 331, the blower 331 is connected to the clamping member 332, and an air outlet of the blower 331 faces a heat generating portion of the print head 400.

Specifically, the blowing fan 331 is disposed at an angle with respect to the vertical direction, so that the wind direction of the blowing fan 331 deviates toward the discharge port of the print head 400.

The fixing block 322 is further provided with a clamping opening 3221, and the clamping opening 3221 is clamped on a side wall of the print head 400. The fixing block 322 also has a heat insulating function for separating the printhead 400 from the clamping member 332.

In this embodiment, the blower fan 331 and the clamp member 332 are connected by a screw.

The clamping member 332 is further provided with a groove 3322, and the groove 3322 is used for accommodating the fixing block 322.

This beat printer head supporting component 300 passes through the removable combination design of connecting piece and clamping piece, realizes beating printer head's maintenance and change to 3D fast, in addition, is connected through electric connection contact piece and electric connection shell fragment electricity between connecting piece and the supporting component, can realize 3D fast and beat printer head and external control mechanism's electricity and be connected.

Referring again to fig. 14-18, the printhead 400 includes: the heating device comprises a spray head 41, a heating wire 44 and a heat insulation conduit 42, wherein the heat insulation conduit 42 is connected to the rear end of the spray head 41, and the heating wire 44 surrounds the outer side wall of the spray head 41. Compared with the existing linear heating wire or the existing sheet heating wire, the heating time of the surrounding heating wire net is shorter, the heating is more uniform, and the effect is better.

Wherein the heating wire 44 includes: a cylindrical heating wire net 441 and a lead tap 442 connected to the cylindrical heating wire net 441, wherein the cylindrical heating wire net 441 surrounds the outer portion of the sidewall of the spraying head 41. The lead tap 442 is provided extending in the axial direction from the end of the columnar heat generating wire net 441.

In the present embodiment, the columnar heating wire net 441 is a spiral columnar net. In other embodiments, the cylindrical heating wire mesh 441 may have other structures or shapes, and the core requirement is to be uniformly distributed outside the sidewall of the nozzle 41 to improve the heating efficiency and increase the heating uniformity.

Further, the heating wire nozzle for 3D printing further comprises a heat insulation adhesive tape 43, wherein the heat insulation adhesive tape 43 is attached to the outside of the heating wire 44, and specifically, the heat insulation adhesive tape 43 is attached to the outside of the columnar heating wire net 441.

The heating wire nozzle for 3D printing further comprises a temperature sensor 45, wherein the temperature sensor 45 is arranged outside the side wall of the nozzle 41.

Specifically, the nozzle 41 includes a nozzle body 411, a cavity disposed in the nozzle body 411 and an end nozzle opening 412 disposed in the nozzle body 411, a discharge hole 4121 is disposed at a front end of the nozzle opening 412, wherein an installation groove 4111 is further disposed on an outer wall of the nozzle body 411, and the temperature sensor 45 is disposed in the installation groove 4111. The temperature sensor 45 comprises a thermistor 451 and a lead 452 connected to the thermistor, wherein a sinking groove 4112 is further concavely arranged at the end of the mounting groove 4111, the thermistor 452 is arranged in the sinking groove 4112, and a cylindrical heating wire net 441 surrounds the thermistor 451.

In this embodiment, the nozzle opening 412 is a conical portion protruding from the end of the nozzle body 411, and the discharge hole 4121 is opened at the top of the column portion.

The side wall of the nozzle body 411 far away from one end of the nozzle opening 412 is further provided with an annular table 4114, and the annular table 4114 is used for positioning when being connected with the heat insulation conduit 42. A through cavity 421 is arranged in the heat insulation pipe 42, and the end part of the spray head 41 is inserted in the through cavity 421.

As shown in fig. 18, a limiting ring 4113 protrudes from an outer wall of the nozzle body 411 at an end near the nozzle opening 412, and the limiting ring 4113 is used for limiting the heating wire 44 and the thermal insulating tape 43.

Preferably, the heat insulation adhesive tape 43 is a teflon adhesive tape.

This beat printer head 400 is through setting the heater to the column net, and the surrounding is outside in the shower nozzle lateral wall, and its heating efficiency is high, and rate of heating is fast and the shower nozzle is heated evenly for when 3D prints, latency is short, and user experience is better.

Referring again to fig. 19 to 24, the electric door lock includes: the device comprises a driving device 510, a bolt 53 and a position detection device, wherein the driving device 510 is used for driving the bolt 53 to perform telescopic action, the position detection device is used for detecting the moving position of the bolt 53, and the driving device 510 controls the bolt 53 to perform telescopic action according to a detection signal of the position detection device.

Specifically, the driving device 510 includes a driving motor 51 and a screw 52 controlled by the driving motor 51 to rotate. In other embodiments, the driving device 510 may be replaced by a small cylinder, and the small cylinder drives the bolt 53 to perform a telescopic action to lock and unlock.

The bolt 53 includes a threaded hole 5311, and the screw 52 is screwed into the threaded hole 5311. In this embodiment, the screw 52 and the threaded hole 5311 are assembled in a linkage manner, so that the linkage structure is more stable, the precision is high, and the action is rapid.

Further, as shown in fig. 23, the latch 53 further includes: the locking rod 532 is connected to a connecting pipe 531 at one end of the locking rod 532 and a limiting part 533 connected to the pipe wall of the connecting pipe 531, and the threaded hole 5311 is disposed on the inner pipe wall of the connecting pipe 531. The top of the threaded hole 5311 is provided with an opening that facilitates observation of internal faults.

As shown in fig. 24, the electric door lock further includes a fixing base 54, a main body 540 of the fixing base 54 is a cylindrical member, a mounting cavity 544 is disposed in the fixing base 54, and the bolt 53 is inserted into the mounting cavity 544. The electric door lock can be fixedly connected to the base 13 through the fixing seat 54.

The fixing base 54 is further provided with a limiting groove 5431, and the limiting portion 533 is inserted into the limiting groove 5431, so that the bolt 53 can only extend and retract along the direction of the limiting groove 5431, that is, the limiting groove 5431 has both limiting and guiding functions. Specifically, the bottom of the fixing base 54 is further provided with a supporting portion 543, and the limiting groove 5431 is formed in the supporting portion 543 by extending from the mounting cavity 544.

The fixing seat 54 is further provided with a connecting hole 541, a shell of the driving motor 51 is provided with a motor connecting lug 511, and the motor connecting lug 511 is connected to the connecting hole 541 through a connecting piece, so that the motor 51 is fixedly connected with the fixing seat 54. The motor connecting lugs 511 are provided with a pair and symmetrically distributed on the outer wall of the main body 540.

More specifically, the fixing base 54 is further provided with a connecting lug 542, and the connecting lug 542 is used for connecting the electric door lock to the carrier. At least two connecting lugs 542 are arranged and symmetrically distributed on the outer wall of the main body 540.

In this embodiment, the position detecting device includes a pair of

position detecting sensors

56 and 57, the

position detecting sensors

56 and 57 are disposed opposite to each other, a protruding stop 5432 is further disposed on the fixed base 54, and the stop 5432 is located between the

position detecting sensors

56 and 57. The baffle 5432 protrudes from the bottom of the supporting portion 543.

Further, the method also comprises the following steps: the circuit board 55, the

position detection sensors

56 and 57 are connected to the circuit board 55, the circuit board 55 is further provided with a plug wire seat 58, and the plug wire seat 58 is electrically connected to the

position detection sensors

56 and 57, is used for externally connecting a flat cable, reads detection signals of the

position detection sensors

56 and 57, and feeds the detection signals back to the driving motor 51. In other embodiments, the position detection sensor may also be a position detection switch or the like. When the driving motor 51 is started to drive the screw rod 52 to rotate, the screw rod 52 drives the bolt to move forwards or backwards, meanwhile, the baffle 5432 on the fixed seat 54 moves between the

position detection sensors

56 and 57, when the baffle 5432 touches the

position detection sensors

56 or 57, a maximum stroke signal can be triggered, and at the moment, the driving motor 51 stops or moves reversely immediately, so that the electric door lock is prevented from being damaged.

The electric door lock of the embodiment realizes locking of the automatic door lock on the door body through linkage of the driving motor, the screw and the bolt, and simultaneously detects the maximum moving stroke of the bolt through the position detection sensor, so that the safety of the door lock is ensured.

Referring again to fig. 5 to 9, the consumable exhaustion warning module 600 includes: a lifting plate 61, an elastic telescopic assembly 62 and a position detection mechanism 63; the elastic telescopic assembly 62 is connected to the lifting plate 61, the position detection mechanism 63 is used for detecting position information of the lifting plate 61 and loading the 3D printed supplied materials on the lifting plate 61, and when the supplied materials are exhausted or are about to be exhausted, the lifting plate 61 rises so that the position detection mechanism 63 detects an early warning signal to stop or give an alarm. The supplied material is loaded on the lifting plate 361, the supplied material is gradually reduced along with the consumed weight, the pressure on the elastic telescopic component 62 is reduced, the elastic telescopic component 62 drives the lifting plate 61 to ascend, so that the lifting plate 61 is separated from the detection area of the position detection mechanism 63, and the early warning signal is triggered.

Wherein, still be equipped with a pivot section of thick bamboo 64 on the lifter plate 61, the tip of pivot section of thick bamboo 64 is equipped with buckle 65, a pivot section of thick bamboo 65 is used for placing coil stock rod 21, and it has filiform 3D printing consumptive material to coil on the coil stock roller 21, and coil stock roller 21 can rotate with the blowing around pivot 23. The buckle 22 is taken down from the rotating shaft 23, the material rolling roller 21 can be quickly replaced, and after the replacement, the buckle 22 is clamped on the rotating shaft 23, so that the material rolling roller 21 is fixed on the rotating shaft 23.

Specifically, the inner wall proximal end portion of the rotating shaft 23 is provided with a clamping groove (not shown in the figure), the buckle 22 is provided with a shaft connecting portion 221, the shaft connecting portion 221 is provided with a clamping protrusion 222, and the clamping protrusion 222 is clamped in the clamping groove. The clamping groove is a strip-shaped groove which is concavely arranged on the inner wall and is at the same height position, correspondingly, the clamping protrusion 222 is a strip-shaped convex block which is convexly arranged on the outer wall and the same height position of the shaft connecting part 221, when the clamping protrusion 222 and the clamping groove are connected, the clamping buckle 22 is inserted into the rotating shaft 23, and then the clamping buckle 22 is rotated, so that the clamping protrusion 222 is clamped into the clamping groove to clamp and fix the clamping buckle and the rotating shaft 23.

Referring again to fig. 8, the elastic expansion element 62 includes: the lifting plate comprises a fixing piece 621 and an elastic piece 623, wherein the fixing piece 621 is provided with a connecting column 622, the elastic piece 623 is connected to the connecting column 622, the free end of the elastic piece 623 abuts against the lifting plate 61, and the elastic piece 623 is pressed downwards by the newly replaced consumable material to be in a compressed state.

Referring again to fig. 7, the lifting plate 61 includes: the vertical plate portion 611, the supporting plate portion 612 bent from the bottom of the vertical plate portion 611 in the transverse direction, and the sensing plate portion 3613 connected to the supporting plate portion 612, the free end of the elastic member 623 abuts against the bottom of the supporting plate portion 612, and the elastic member 623 is in surface contact with the supporting plate portion 612, so that the lifting structure is more stable.

The axis of the rotating shaft 23 is perpendicular to the plane of the vertical plate portion 611, and the rotating shaft 23 is connected with the lifting plate 61 through a screw. That is, the winding roller 21 rotates horizontally to discharge the material, and the elevating plate 61 is vertically elevated.

In the present embodiment, the position detection mechanism 63 is a photosensor. In other embodiments, the position detection mechanism 63 may also be an infrared correlation sensor.

Preferably, the elastic member 623 is a spring, and the spring is sleeved on the connecting column 622.

Specifically, the lifting plate 61 is further provided with an upper sliding buckle 6111 and a lower sliding buckle 6112 which are vertically distributed, the upper sliding buckle 6111 and the lower sliding buckle 6112 have the same structure and respectively include two clamping lugs which are reversely arranged at the same height, the corresponding upper shell 11 is provided with a corresponding clamping hole 101, and the clamping hole 101 is an inverted L-shaped hole. During assembly, the lugs of the lifter plate 61 are inserted through the wider portion of the L-shaped hole and then slid down into the narrower portion of the L-shaped hole, thereby attaching the lifter plate 61 to the housing 11.

It is through with lifter plate sliding connection on printer housing, connect flexible subassembly and position detection mechanism on the base, and the coil stock roller is connected in the lifter plate, and the supplied materials reduces along with consuming weight, and when reacing the early warning position, the lifter plate triggers position detection mechanism to the early warning supplied materials exhausts, its simple structure, and better compatible blowing and the dual function structural design of early warning.

The 3D printing device of this embodiment, it has reduced equipment cost through simplifying the design to beat printer head supporting component through simple and easy dismouting and realized beating the convenient change that printer head, it has used up the early warning subassembly through the consumptive material and has realized simple and reliable consumptive material use monitoring, and its overall structure is simple, and is simple easy-to-use, is fit for ordinary family expenses or simple commercial.

The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.

Claims

1. A3D printing device, comprising: the device comprises a shell, a discharging assembly, a printing head supporting assembly, a printing head and a consumable material exhaustion early warning assembly, wherein the discharging assembly is connected outside the shell; wherein, the blowing subassembly is used for the load consumptive material and blowing as required, it is used for supporting and simply changing to beat printer head supporting component beat printer head, the consumptive material is used up the early warning subassembly and is used for monitoring consumptive material surplus condition on the blowing subassembly.

2. The 3D printing device according to claim 1, wherein the housing comprises: go up casing and base, the base connect in the bottom of going up the casing, go up still to be equipped with the door that opens and shuts on the casing, still be equipped with an electric door lock in the base, electric door lock is used for controlling opening and shutting of door opens and shuts.

3. The 3D printing device according to claim 2, wherein the power door lock comprises: the device comprises a driving device, a bolt and a position detection device, wherein the driving device is used for driving the bolt to stretch and retract, the position detection device is used for detecting the moving position of the bolt, and the driving device controls the bolt to stretch and retract according to a signal detected by the position detection device.

4. The 3D printing device according to claim 3, wherein the driving device comprises a driving motor and a screw rod controlled by the driving motor to rotate, and the bolt comprises a threaded hole, and the screw rod is screwed in the threaded hole.

5. The 3D printing device according to claim 1, wherein the printhead support assembly comprises: the printing head fixing device comprises a connecting piece, a clamping piece and a fixing block, wherein the connecting piece is provided with a jack for inserting the printing head, the clamping piece is provided with a clamping opening, the fixing block is connected onto the connecting piece, the clamping piece is detachably connected onto the connecting piece, and the clamping opening and the fixing block are close to the side wall of the printing head so as to support and fix the printing head.

6. The 3D printing device according to claim 5, wherein the connecting member further comprises a circuit board electrically connected to the print head, the circuit board is provided with an electrical contact pad, the connecting member further comprises a supporting member, the supporting member comprises a control circuit board, the control circuit board is provided with an electrical connection spring, and the electrical connection spring elastically abuts against the electrical contact pad.

7. The 3D printing device according to claim 6, further comprising a blower fan, wherein the blower fan is connected to the clamping member, an air outlet of the blower fan faces a heating position of the printing head, and the blower fan is arranged at an included angle with a vertical direction, so that an air direction of the blower fan deviates to a discharge port of the printing head.

8. The 3D printing device according to claim 1, wherein the consumable exhaustion warning component comprises: the device comprises a lifting plate, an elastic telescopic assembly and a position detection mechanism; the elastic telescopic assembly is connected to the lifting plate, the position detection mechanism is used for detecting the position information of the lifting plate and loading the incoming materials printed by the 3D printer on the lifting plate, and when the incoming materials are exhausted or are about to be exhausted, the lifting plate rises to enable the position detection mechanism to detect an early warning signal to stop or give an alarm.

9. The 3D printing device according to claim 1, wherein the print head comprises: the thermal insulation guide pipe is connected to the rear end of the spray head, and the heating wire surrounds the outer portion of the side wall of the spray head.

10. The 3D printing device according to claim 9, wherein the heater comprises: the heating device comprises a columnar heating wire net and a lead tap connected to the columnar heating wire net, wherein the columnar heating wire net surrounds the outer part of the side wall of the spray head.