阅读说明：本技术 具有高效速热清堵功能的3d打印装置 (3D printing device with high-efficient fast thermal clear stifled function ) 是由 关雷 方森君 郑玉洁 徐临超 蔡承宇 何飞 于 2021-06-08 设计创作，主要内容包括：本发明公开一种具有高效速热清堵功能的3D打印装置,包括机座和喷管,机座上带有移动支架,移动支架驱动喷管,喷管与物料输送机构连接,喷管内架设有中心加热管,中心加热管的后端穿过喷管后端座,喷管后端座与中心加热管的配合面液密封,中心加热管中设置有电热体,中心加热管穿透后端座的端头采用柔性导线连接电源,端头壳体前端与后壳体套设并螺纹连接,喷管上套接有移动速热套。该3D打印装置的喷管中的物料能够更好的保持熔融和流通状态,并且可以在局部进入固结状态时及时通过移动速热套有针对性的进行速热解决。(The invention discloses a 3D printing device with an efficient quick-heating and blockage-removing function, which comprises a machine base and a spray pipe, wherein the machine base is provided with a movable support, the movable support drives the spray pipe, the spray pipe is connected with a material conveying mechanism, a central heating pipe is erected in the spray pipe, the rear end of the central heating pipe penetrates through a rear end seat of the spray pipe, the rear end seat of the spray pipe is in liquid seal with the matching surface of the central heating pipe, an electric heating body is arranged in the central heating pipe, the end of the central heating pipe penetrating through the rear end seat is connected with a power supply through a flexible lead, the front end of an end shell is sleeved with a rear shell and is in threaded connection with the rear shell, and a movable quick-heating sleeve is sleeved on the spray pipe. The material in the spray pipe of the 3D printing device can better keep a melting state and a circulating state, and can be timely and rapidly heated by moving the rapid heating sleeve in a targeted manner when the material locally enters a consolidation state.)

1. The utility model provides a 3D printing device with clear stifled function of high-efficient fast heat, includes frame and spray tube, and the spray tube front end has the nozzle, has the movable support on the frame, removes movable support drive spray tube, and the spray tube is connected with material conveying mechanism, and the spray tube includes end casing and back casing, characterized by: the spray pipe is internally provided with a central heating pipe, the rear end of the central heating pipe penetrates through a spray pipe rear end seat, the matching surface of the spray pipe rear end seat and the central heating pipe is in liquid seal, an electric heating body is arranged in the central heating pipe, the end of the central heating pipe penetrating through the rear end seat is connected with a power supply by adopting a flexible lead, the front end of the central heating pipe is erected on a positioning ring frame, the periphery of the positioning ring frame is provided with an outer ring surface, the center of the positioning ring frame is provided with an insertion hole, the central heating pipe is inserted into the insertion hole, the outer ring surface of the positioning ring frame is provided with an external thread, the positioning ring frame is sleeved in the end shell, and the front end of the end shell is sleeved with the rear shell and is in threaded connection with the rear shell; the nozzle module is characterized in that a moving quick heating sleeve is sleeved on the nozzle pipe and is provided with a lifting mechanism arranged on a nozzle module moving mechanism, the moving quick heating sleeve is driven by the lifting mechanism to move up and down along the nozzle pipe, and a quick heating mechanism is arranged in the moving quick heating sleeve and is connected with a power supply through a lead.

2. The 3D printing device with the efficient quick-heating blockage removing function according to claim 1, wherein the device comprises: the outer periphery of the central heating pipe is provided with blades distributed spirally, the end of the central heating pipe penetrating through the rear end seat is in driving connection and matching through a driving motor, two ends of the central heating pipe are erected on double-sided sealing bearings, and the double-sided sealing bearings are respectively arranged on the jack and the spray pipe rear end seat.

3. The 3D printing apparatus with efficient quick-heating and blockage-removing functions according to claim 1 or 2, wherein: the inner side wall of the movable quick heating sleeve is provided with a guide groove, the outer wall of the spray pipe is provided with a convex strip which is matched with the guide groove and is mutually nested, the outer end of the movable quick heating sleeve is provided with a connecting block, a movable support where the spray pipe is located is provided with a driving nut, the driving nut is fixedly connected with a driving screw, the driving screw is in threaded connection with the connecting block, the driving nut is driven by a small motor fixed on the movable support, the driving nut is driven to rotate to drive the driving screw to rotate, and the driving screw drives the movable quick heating sleeve to move up and down.

4. The 3D printing apparatus with efficient quick-heating and blockage-removing functions according to claim 1 or 2, wherein: the frame includes base and base plate, nozzle module removes mechanism includes vertical screw rod, is provided with vertical guide arm side by side with vertical screw rod, the both ends of vertical screw rod and vertical guide arm are all erect on the hack lever seat, and the hack lever seat is fixed on the base plate, the base plate is articulated with the base, has the recess on the base, the base plate folds the back with the base nozzle and nozzle moving mechanism are received and are included in the recess, have the swinging arms on the base plate, have the draw-in groove on the base, the base plate struts the back the swinging arms supporting is in the draw-in groove.

5. The 3D printing device with the efficient quick-heating blockage removing function according to claim 3, wherein the device comprises: the frame includes base and base plate, nozzle module removes mechanism includes vertical screw rod, is provided with vertical guide arm side by side with vertical screw rod, the both ends of vertical screw rod and vertical guide arm are all erect on the hack lever seat, and the hack lever seat is fixed on the base plate, the base plate is articulated with the base, has the recess on the base, the base plate folds the back with the base nozzle and nozzle moving mechanism are received and are included in the recess, have the swinging arms on the base plate, have the draw-in groove on the base, the base plate struts the back the swinging arms supporting is in the draw-in groove.

Technical Field

The invention relates to a 3D printing device with an efficient quick-heating blockage removing function.

Background

FDM (fused Deposition modeling), a fused Deposition manufacturing process, was developed by Scott column, an American scholar, in 1988. The material of the fused deposition fabrication process is typically a thermoplastic material such as PLA, ABS, nylon, etc. The device is fed in the form of a thread, and the thermoplastic material is melted by heating in a nozzle. The spray head moves along the section contour and filling track of the part, and simultaneously extrudes out the molten material, and the material is rapidly solidified and coagulated with the surrounding material. Three-dimensional fabrication is accomplished by layer-by-layer buildup.

The core component of a fused deposition manufacturing apparatus is its extrusion nozzle, and typically a filamentary feed enters the extrusion apparatus from the top thereof and enters the bottom thereof through a feed wire conduit (throat). The bottom is provided with a heating device which can heat and melt the silk feeding material. The temperature of the extrusion nozzle gradually increases from the top to the bottom due to heat conduction.

When the filamentous feed material passes through the intermediate transition region between the cold end (the top end of the extrusion nozzle) and the hot end (the bottom end of the extrusion nozzle), the material in the intermediate transition region is often solidified (cooled) due to various reasons, such as heat dissipation faults, material impurities, improper operation and the like, and is blocked in a wire feeding pipeline (a throat pipe), so that the fused deposition manufacturing equipment cannot work.

The traditional maintenance mode of the faults is to replace a wire feeding pipeline (throat) or clear away the blockage in the wire feeding pipeline (throat) in a heating mode, but the operation is complex and the maintenance time is long.

Disclosure of Invention

The invention aims to provide a 3D printing device with an efficient quick-heating blockage removing function, and the 3D printing device can better remove blockage in a wire feeding pipeline (a throat).

Therefore, the 3D printing device with the efficient quick-heating and blockage-removing function comprises a base and a spray pipe, wherein the front end of the spray pipe is provided with a nozzle, the base is provided with a movable support, the movable support drives the spray pipe, the spray pipe is connected with a material conveying mechanism, the spray pipe comprises an end shell and a rear shell, a central heating pipe is erected in the spray pipe, the rear end of the central heating pipe penetrates through a rear end seat of the spray pipe, the matching surface of the rear end seat of the spray pipe and the central heating pipe is in liquid seal, an electric heating body is arranged in the central heating pipe, the end, penetrating through the rear end seat, of the central heating pipe is connected with a power supply through a flexible lead, the front end of the central heating pipe is erected on a positioning ring frame, the periphery of the positioning ring frame is provided with an outer ring surface, the center of the positioning ring frame is provided with a jack, the central heating pipe is inserted into the jack, the outer ring surface of the positioning ring frame is provided with an external thread, and the positioning ring frame is sleeved in the end shell, the front end of the end head shell is sleeved with the rear shell and is in threaded connection with the rear shell; the nozzle module is characterized in that a moving quick heating sleeve is sleeved on the nozzle pipe and is provided with a lifting mechanism arranged on a nozzle module moving mechanism, the moving quick heating sleeve is driven by the lifting mechanism to move up and down along the nozzle pipe, and a quick heating mechanism is arranged in the moving quick heating sleeve and is connected with a power supply through a lead.

Preferably, the periphery of the central heating pipe is provided with blades distributed spirally, the central heating pipe penetrates through the end of the rear end seat and is in driving connection and matching through a driving motor, two ends of the central heating pipe are erected on double-sided sealing bearings, and the double-sided sealing bearings are respectively arranged on the jack and the nozzle rear end seat.

Preferably, the inner side wall of the movable quick heating sleeve is provided with a guide groove, the outer wall of the spray pipe is provided with a convex strip which is matched with the guide groove and is mutually nested, the outer end of the movable quick heating sleeve is provided with a connecting block, a movable support where the spray pipe is located is provided with a drive nut, the drive nut is fixedly connected with a drive screw, the drive screw is in threaded connection with the connecting block, the drive nut is driven by a small motor fixed on the movable support, the drive nut is driven to rotate to drive the drive screw to rotate, and the drive screw drives the movable quick heating sleeve to move up and down.

Preferably, the frame includes base and base plate, nozzle module removes mechanism includes vertical screw rod, is provided with vertical guide arm side by side with vertical screw rod, the both ends of vertical screw rod and vertical guide arm are all erect on the hack lever seat, and the hack lever seat is fixed on the base plate, the base plate is articulated with the base, has the recess on the base, the base plate folds the back with the base nozzle and nozzle moving mechanism are received and are included in the recess, have the swinging arms on the base plate, have the draw-in groove on the base plate, after the base plate struts the swinging arms supporting is in the draw-in groove.

The invention has the technical effects that:

1. the materials in the spray pipe of the 3D printing device can be better kept in a melting and circulating state, and can be rapidly heated and solved in a targeted manner by moving the rapid heating sleeve when the local part of the material enters a solidification state, so that the problem of solidification and clogging of the materials can be quickly and efficiently solved on the premise of saving energy;

for example: when the material is blocked in the middle section, the quick heating sleeve can be moved to the middle section to quickly dredge, so that the low efficiency and high cost caused by the traditional maintenance mode are avoided, for example, the traditional mode that a wire feeding pipeline (a throat pipe) is replaced or other external heating equipment is adopted to remove the blocking object in the wire feeding pipeline (the throat pipe) is high in maintenance cost and low in speed.

2. The base plate and the base of the 3D printing device can be folded for convenient transportation, and can be opened and supported for 3D printing;

3. this 3D printing device's central heating pipe's front end erects on the locating ring frame, and central heating pipe inserts the jack, the outer lane face of locating ring frame has the external screw thread, the locating ring frame cover is established in the end casing, end casing front end with back casing cover is established and threaded connection, and above structure makes whole spray tube and nozzle constitute convenient and equipment and the structure of dismantling, and convenient regular clearance material changes central heating pipe etc. is favorable to improve equipment's work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a substrate and a base of a 3D printing apparatus provided by the present invention, where the 3D printing apparatus is in an open state.

Fig. 2 is a schematic structural view of the nozzle and the lifting mechanism in fig. 1.

Fig. 3 is a schematic cross-sectional structural view of a nozzle and a nozzle of the 3D printing apparatus in fig. 1.

Fig. 4 is a schematic structural diagram of the 3D printing apparatus in fig. 1 after being folded.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-4, the 3D printing apparatus with efficient quick-heating and blockage-clearing functions provided by the present invention comprises a base and a nozzle 1, wherein the nozzle 1 has a nozzle 2 at the front end thereof, the base has a movable support 3, the movable support 3 drives the nozzle 1, the nozzle 1 is connected to a material conveying mechanism, the nozzle 1 comprises an end housing 4 and a rear housing 5, the nozzle 1 has a central heating pipe 6 mounted therein, the rear end of the central heating pipe 6 passes through a nozzle rear end seat 7, the nozzle rear end seat 7 is in fluid-tight contact with the mating surface of the central heating pipe 6, an electric heater 8 is disposed in the central heating pipe 6, the end of the central heating pipe 6 passing through the rear end seat 7 is connected to a power supply by a flexible wire, the front end of the central heating pipe 6 is mounted on a positioning ring frame 9, an outer ring surface 91 is disposed on the periphery of the positioning ring frame 9, a plug 92 is disposed in the center, the central heating pipe 6 is inserted into the plug 92, the outer ring surface of the positioning ring frame 9 is provided with an external thread, the positioning ring frame 9 is sleeved in the end head shell 4, and the front end of the end head shell 4 is sleeved with the rear shell 5 and is in threaded connection with the rear shell; the nozzle module moving mechanism is characterized in that a moving quick heating sleeve 10 is sleeved on the nozzle 1, the moving quick heating sleeve 10 is provided with a lifting mechanism 11 arranged on the nozzle module moving mechanism, the moving quick heating sleeve 10 moves up and down along the nozzle 1 under the driving of the lifting mechanism 11, a quick heating mechanism is arranged in the moving quick heating sleeve 10, and the quick heating mechanism is connected with a power supply through a lead.

Referring to fig. 2-3, in order to improve the conveying efficiency, the periphery of the central heating pipe 6 is provided with spirally distributed paddles 12, the end of the central heating pipe 6 penetrating through the rear end seat 7 is in driving connection and matching through a driving motor 13, both ends of the central heating pipe 6 are erected on double-sided sealing bearings 14, and the double-sided sealing bearings 14 are respectively arranged on the insertion holes 92 and the nozzle rear end seat 7.

Referring to fig. 2-4, in order to be able to move quickly and stably to solve the consolidation clogging problem, the inner side wall of the moving quick heating jacket 10 is provided with a guide groove 101, the outer wall of the spray pipe 1 is provided with a convex strip 102 which is matched with the guide groove 101 and is nested with each other, the outer end of the moving quick heating jacket 10 is provided with a connecting block 103, the moving support 3 on which the spray pipe 1 is located is provided with a driving nut 16, the driving nut 16 is fixedly connected with a driving screw 17, the driving screw 17 is in threaded connection with the connecting block 103, the driving nut 16 is driven by a small motor 18 which is fixed on the moving support 3, the driving nut 16 is driven by rotation to drive the driving screw 17 to rotate, and the driving screw 17 drives the moving quick heating jacket 10 to move up and down.

Referring to fig. 1 and 4, in order to enable the 3D printing apparatus to be folded for transportation or opened, the base includes a base 19 and a base plate 20, the nozzle module moving mechanism includes a vertical screw 21, a vertical guide rod 22 is arranged alongside the vertical screw 21, two ends of the vertical screw 21 and the vertical guide rod 22 are erected on a rack seat, the rack seat is fixed on the base plate 20, the base plate 20 is hinged to the base 19, a groove 23 is formed in the base 19, the nozzle and nozzle moving mechanism is received in the groove 23 after the base plate 20 is folded with the base 19, a swing rod 24 is arranged on the base plate 20, a clamping groove 25 is arranged on the base 19, and the swing rod 24 is supported in the clamping groove 25 after the base plate 20 is unfolded, so that the position can be fixed for operation.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.