Material spraying device of three-dimensional printer

Abstract

The utility model discloses a material spraying device of a three-dimensional printer, and relates to the technical field of three-dimensional printers, the material spraying device comprises a heater, the top of the heater is provided with a first mounting groove, the inner cavity of the heater is provided with an internal thread, and the inner cavity of the heater is movably provided with a spray head; and an aluminum radiator is movably arranged at the top of the heater. According to the material spraying device of the three-dimensional printer, a connector is tightly held, when a heater rotates forwards, a second fixing ring synchronously rotates forwards, due to limiting of a spring and vertical reciprocating motion of a first ratchet, fixing of the heater and an aluminum radiator cannot be affected, assembly of the device is completed, and the assembled device is convenient to disassemble and assemble. Due to the limiting of the first ratchet, the second ratchet and the spring, when the heater rotates reversely, looseness between the second fixing ring and the connector cannot be caused, and therefore the phenomena that heat dissipation is poor due to looseness of a bolt, materials in the discharging pipe are heated to expand, and the discharging pipe is blocked are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -dimensional printer technical field, concretely is a kind of material spraying device of three -dimensional printer. BACKGROUND

[0002] 3D printing is a kind of rapid prototyping technology, also called additive manufacturing, it is a kind of digital model file as foundation, using powdered metal or plastic and other materials that can be bonded, by layering printing way to construct object technology, 3D printing is usually realized using digital technology material printer, often in mold manufacturing, industrial design etc. It is used for manufacturing model, and gradually used for the direct manufacturing of some products.

[0003] Referring to Chinese patent, application number is:“CN210501449U”“a kind of 3D printer nozzle”, the patent discloses a kind of 3D printer nozzle, it is related to 3D printer nozzle mechanical device field, to solve the problem that the Teflon pipe in the nozzle of 3D printer and nozzle are not convenient to disassemble.The utility model discloses a kind of 3D printer nozzle is set to clamp nozzle, heating device and throat pipe in the middle of lower fixed plate and upper fixed plate, and nozzle, heating device and throat pipe are all slidingly connected, as long as the nut of clamping lower fixed plate and upper fixed plate is removed, they can be all disassembled, so nozzle can be conveniently removed;The upper throat pipe and lower throat pipe of the utility model discloses a kind of 3D printer nozzle are divided into two parts, and the upper throat pipe and lower throat pipe are also slidingly connected, after pulling out, the Teflon pipe in it will be exposed, so that Teflon pipe can be easily pulled out;The utility model discloses a kind of 3D printer nozzle is not covered with shell, not only disassembly is convenient, and throat pipe place is better at radiating heat;

[0004] But due to the nozzle described above, in use, nut can appear loose, leading to heating device can be separated from the abutment of heat dissipation component, leading to nozzle only through throat pipe radiating heat, and the heat dissipation effect will be poor, easy to appear material thermal expansion phenomenon, cause nozzle blockage, for this, we propose a kind of material spraying device of three -dimensional printer to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of material spraying device of three -dimensional printer, solve the above-mentioned nozzle, in use, nut can appear loose, leading to heating device can be separated from the abutment of heat dissipation component, leading to nozzle only through throat pipe radiating heat, and the heat dissipation effect will be poor, easy to appear material thermal expansion phenomenon, cause nozzle blockage.

[0006] In order to achieve the above object, the utility model discloses a kind of material spraying devices of three-dimensional printer, including heater, the top of the heater is provided with first installation slot, the inner cavity of the heater is provided with internal thread, the inner cavity of the heater movably is provided with spray head, the top of the heater movably is provided with aluminium radiator, the top of the aluminium radiator is provided with pipeline slot, the inner cavity of the pipeline slot movably is provided with discharge pipe, the surface of the discharge pipe movably is provided with connector, the surface of the connector movably is provided with fixed component;

[0007] The fixed component includes a limit ring, the surface of the limit ring movably is provided with first fixed ring, the bottom of the first fixed ring is fixed with first ratchet, the bottom of the first ratchet movably engages second ratchet, the bottom of the second ratchet is fixedly connected with second fixed ring, and the bottom of the second fixed ring is fixedly connected with the inner cavity of the first installation slot.

[0008] Preferably, the surface of the spray head is provided with external thread, and the surface of the external thread is threadedly connected with the surface of the internal thread.

[0009] Preferably, the inner cavity of the limit ring is fixedly connected with the surface of the connector.

[0010] Preferably, the bottom of the aluminium radiator is provided with second installation slot, the inner cavity of the second installation slot is slidably connected with the surface of the limit ring, and the inner cavities of the pipeline slot, the first installation slot and the second installation slot are connected.

[0011] Preferably, the top of the first fixed ring is fixedly provided with spring, and the top of the spring is fixedly connected with the bottom of the aluminium radiator.

[0012] Preferably, the bottom of the surface of the connector is threadedly connected with the inner cavity of the second fixed ring.

[0013] Preferably, the surface of the right side of the heater is fixedly provided with wire component.

[0014] Beneficial effects

[0015] The utility model provides a kind of material spraying devices of three-dimensional printer.Compared with prior art, it has the following beneficial effects:

[0016] The material spraying device of the three-dimensional printer, by fixing the nozzle inside the heater, the nozzle is located at the bottom of the second fixed ring, and the top of the nozzle is in contact with the bottom of the second fixed ring, at this time the heater is rotated forward, so that the inner cavity of the second fixed ring is threadedly fixed with the bottom surface of the connector, due to the setting of the first ratchet and the second ratchet, the connector is tightened, when the heater is rotated forward, the second fixed ring is synchronously rotated forward, due to the limiting of the spring, the first ratchet makes up-and-down reciprocating motion, which does not affect the fixation of the heater and the aluminum heat sink, so as to complete the assembly of the device, after the assembly of the device, due to the limiting of the first ratchet, the second ratchet and the spring, when the heater is reversed, the loosening between the second fixed ring and the connector is avoided, so that the poor heat dissipation caused by the loosening of the bolt is avoided, the material in the discharge pipe is expanded due to heating, and the discharge pipe is blocked. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure front view of the utility model;

[0018] Figure 2 It is a whole structure front view of the utility model Figure 1 Structure bottom schematic view;

[0019] Figure 3 It is a whole structure explosion section view of the utility model;

[0020] Figure 4 It is a fixed assembly structure front view of the utility model.

[0021] In the drawing: 1, heater; 2, fixed assembly; 3, wire assembly; 4, aluminum heat sink; 5, discharge pipe; 6, pipe groove; 7, nozzle; 8, connector; 9, second mounting groove; 10, first mounting groove; 11, internal thread; 12, external thread; 201, limiting ring; 202, spring; 203, first fixed ring; 204, first ratchet; 205, second ratchet; 206, second fixed ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme, specifically including the following embodiments:

[0024] Embodiment one:

[0025] The utility model provides a kind of material spraying device of three-dimensional printer, including heater 1, the top of heater 1 is equipped with first installation slot 10, the inner chamber of heater 1 is equipped with internal thread 11, the inner chamber of heater 1 movably is equipped with spray head 7, the top of heater 1 movably is equipped with aluminium radiator 4, the top of aluminium radiator 4 is equipped with pipeline slot 6, the inner chamber of pipeline slot 6 movably is equipped with discharge pipe 5, the surface of discharge pipe 5 movably is equipped with connector 8, the surface of connector 8 movably is equipped with fixed assembly 2;

[0026] Fixed assembly 2 includes limiting ring 201, the surface of limiting ring 201 movably is equipped with first fixed ring 203, the bottom of first fixed ring 203 is fixedly equipped with first ratchet 204, first ratchet 204 is movably engaged with second ratchet 205, the bottom of second ratchet 205 is fixedly connected with second fixed ring 206, the bottom of second fixed ring 206 is fixedly connected with the inner chamber of first installation slot 10;

[0027] By placing heater 1 at the bottom of aluminium radiator 4, so that second installation slot 9 and first installation slot 10 are communicated, at this time spring 202 drives first fixed ring 203 to move downwards, so that first ratchet 204 and second ratchet 205 are in engagement, spray head 7 is fixed in the inside of heater 1 by the thread connection of external thread 12 and internal thread 11, so that spray head 7 is located at the bottom of second fixed ring 206, and the top of spray head 7 is in contact with the bottom of second fixed ring 206, at this time, the heater 1 is rotated forward, so that the inner chamber of second fixed ring 206 is fixedly screwed with the bottom of the surface of connector 8, due to the arrangement of first ratchet 204 and second ratchet 205, connector 8 is tightened, when the heater 1 is rotated forward, second fixed ring 206 is rotated forward synchronously, due to the limiting of spring 202, first ratchet 204 reciprocates up and down, without affecting the fixation of heater 1 and aluminium radiator 4, so as to complete the assembly of the device, after assembly, due to the limiting of first ratchet 204, second ratchet 205 and spring 202, when the heater 1 is reversed, it will not cause the loosening between second fixed ring 206 and connector 8, so as to avoid the phenomenon of poor heat dissipation caused by bolt loosening, which causes the material in discharge pipe 5 to expand due to heating, causing the blockage of discharge pipe 5.

[0028] The surface of spray head 7 is equipped with external thread 12, and the surface of external thread 12 is threadedly connected with the surface of internal thread 11.

[0029] By the arrangement of external thread 12 and internal thread 11, spray head 7 can be fixed in the inner chamber of heater 1, facilitating the spraying of materials.

[0030] The inner chamber of limiting ring 201 is fixedly connected with the surface of connector 8.

[0031] The bottom of the aluminum radiator 4 is provided with a second mounting groove 9, the inner cavity of the second mounting groove 9 is in sliding connection with the surface of the limiting ring 201, and the inner cavities of the pipeline groove 6, the first mounting groove 10 and the second mounting groove 9 are in communication;

[0032] The inner cavities of the pipeline groove 6, the first mounting groove 10 and the second mounting groove 9 are in communication, so that the transportation of materials is facilitated.

[0033] The top of the first fixing ring 203 is fixedly provided with a spring 202, and the top of the spring 202 is fixedly connected with the bottom of the aluminum radiator 4;

[0034] The limiting of the spring 202 enables the first ratchet tooth 204 to make up-and-down reciprocating motion, and does not affect the fixation of the heater 1 and the aluminum radiator 4.

[0035] The bottom of the surface of the connector 8 is in threaded connection with the inner cavity of the second fixing ring 206;

[0036] The second fixing ring 206 enables the connector 8 to be fixed, so that the heater 1 and the aluminum radiator 4 are fixed.

[0037] The surface of the right side of the heater 1 is fixedly provided with a wire assembly 3;

[0038] The wire assembly 3 enables the heater 1 to normally operate, so that the materials are hot-melted.

[0039] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0040] In work, by placing the heater 1 at the bottom of the aluminum radiator 4, so that the second installation groove 9 and the first installation groove 10 are communicated, at this time the spring 202 will drive the first fixed ring 203 to move downward, so that the first ratchet 204 and the second ratchet 205 are in meshing state, the nozzle 7 is fixed in the inside of the heater 1 through the thread connection of the outer thread 12 and the inner thread 11, so that the nozzle 7 is located at the bottom of the second fixed ring 206, and the top of the nozzle 7 is in contact with the bottom of the second fixed ring 206, at this time the heater 1 is rotated forward, so that the inner cavity of the second fixed ring 206 is fixed with the bottom thread on the surface of the connector 8, due to the setting of the first ratchet 204 and the second ratchet 205, the connector 8 is tightened, when the heater 1 is rotated forward, the second fixed ring 206 is rotated forward synchronously, due to the limiting of the spring 202, the first ratchet 204 makes up and down reciprocating motion, which does not affect the fixation of the heater 1 and the aluminum radiator 4, so as to complete the assembly of the device, after the assembly of the device, due to the limiting of the first ratchet 204, the second ratchet 205 and the spring 202, when the heater 1 is reversed, the loosening between the second fixed ring 206 and the connector 8 will not occur, so as to avoid the poor heat dissipation caused by the loosening of the bolt, the material in the discharge pipe 5 is expanded due to heating, and the blockage of the discharge pipe 5 occurs.

Claims

1. A material jetting apparatus of a three-dimensional printer comprising a heater (1), characterized in that: The top of the heater (1) is provided with a first mounting slot (10), the inner cavity of the heater (1) is provided with an internal thread (11), the inner cavity of the heater (1) is movably provided with a spray head (7), the top of the heater (1) is movably provided with an aluminum radiator (4), the top of the aluminum radiator (4) is provided with a pipeline slot (6) penetratingly, the inner cavity of the pipeline slot (6) is movably provided with a discharge pipe (5), the surface of the discharge pipe (5) is movably sleeved with a connector (8), and the surface of the connector (8) is movably provided with a fixing assembly (2). The fixing assembly (2) comprises a limiting ring (201), the surface of the limiting ring (201) is movably sleeved with a first fixing ring (203), the bottom of the first fixing ring (203) is fixedly provided with a first ratchet (204), the bottom of the first ratchet (204) is movably engaged with a second ratchet (205), the bottom of the second ratchet (205) is fixedly connected with a second fixing ring (206), and the bottom of the second fixing ring (206) is fixedly connected with the inner cavity of the first mounting slot (10).

2. The material jetting device of claim 1, wherein: The surface of the spray head (7) is provided with an external thread (12), and the surface of the external thread (12) is threadedly connected with the surface of the internal thread (11).

3. The material jetting device of claim 1, wherein: The inner cavity of the limiting ring (201) is fixedly connected with the surface of the connector (8).

4. The material jetting device of claim 1, wherein: The bottom of the aluminum radiator (4) is provided with a second mounting slot (9), the inner cavity of the second mounting slot (9) is slidably connected with the surface of the limiting ring (201), and the inner cavities of the pipeline slot (6), the first mounting slot (10) and the second mounting slot (9) are connected.

5. The material jetting device of claim 1, wherein: The top of the first fixing ring (203) is fixedly provided with a spring (202), and the top of the spring (202) is fixedly connected with the bottom of the aluminum radiator (4).

6. The material jetting device of claim 1, wherein: The bottom surface of the connector (8) is threadedly connected with the inner cavity of the second fixing ring (206).

7. The material jetting device of claim 1, wherein: The surface of the right side of the heater (1) is fixedly provided with a wire assembly (3).

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