Photocuring 3D printer with anti-bubble heating trough

Abstract

The photocuring 3D printer comprises a main machine, a heating tank and a storage tank, the heating tank is arranged in a containing tank of the main machine, the storage tank is located in the heating tank, a water storage area is formed between the heating tank and the storage tank, a heating wire is fixedly connected to the inner wall of the heating tank, and the inner wall of the heating tank is fixedly connected with the storage tank. A driving motor is fixed to the outer wall of the heating groove, a driving shaft of the driving motor penetrates through the heating groove and is connected with a power rod, the power rod is located in the storage groove, a sliding rod parallel to the axis of the power rod is fixed in the storage groove, a push plate is slidably connected to the sliding rod, and the power rod rotates and enables the push plate to move in the length direction of the sliding rod through a conduction assembly. A stirring plate is connected to the push plate, two symmetrically-arranged material pushing slopes are arranged on the stirring plate, the included angle a between the two material pushing slopes is an acute angle, the edges of the push plate and the stirring plate are provided with arc-shaped faces, bubbles are reduced, and the 3D printing quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to light solidification 3D printer, especially, relate to a kind of light solidification 3D printer with anti-bubble heating material groove. BACKGROUND

[0002] Laser rapid prototyping is also called light modeling or stereolithography, which works based on the light polymerization principle of liquid photosensitive resin. The liquid tank is filled with liquid light-cured resin, and the laser beam can scan on the liquid surface under the action of the deflection mirror. The liquid is solidified by the light spot. The low temperature and temperature inhomogeneity will greatly affect the resin forming, and problems such as uneven solidification will occur.

[0003] At present, the Chinese patent with the authorization announcement number CN206066953U discloses a light solidification 3D printer heating material groove, which comprises a material groove body, a sandwich layer is arranged on the inner side of the material groove body, a safety air valve is arranged on the upper end of the sandwich layer, heat-conducting water is arranged in the sandwich layer, a heating sheet is arranged in the sandwich layer, the heating sheet is connected with a temperature control device, a temperature sensor and a wave wheel are arranged on the inner side of the material groove body, the axle of the wave wheel passes through the material groove body and the sandwich layer and is connected with a transmission device, and the transmission device is connected with a driving motor.

[0004] This light solidification 3D printer heating material groove has simple structure and low production cost, but the high-speed rotating wave blade and the resin produce violent shearing action, which causes cavitation phenomenon (local vaporization of liquid) and forms many small bubbles, thereby affecting the 3D printing quality. Moreover, such bubbles are more obvious especially when the resin has high viscosity or the blade edge is sharp. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a light solidification 3D printer with anti-bubble heating material groove, which effectively reduces bubble generation and improves 3D printing quality.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a light solidification 3D printer with anti-bubble heating material groove, which comprises a host computer, a heating groove and a storage tank, the heating groove is arranged in the placing groove of the host computer, the storage tank is located in the interior of the heating groove, a water storage area is formed between the heating groove and the storage tank, heating wires are fixedly connected to the inner wall of the heating groove, a driving motor is fixed to the outer wall of the heating groove, the driving shaft of the driving motor penetrates through the heating groove, a power rod is connected to the driving shaft, the power rod is located in the storage tank, a sliding rod parallel to the axis of the power rod is fixed in the storage tank, a push plate is slidably connected to the sliding rod, the power rod rotates and moves the push plate along the length direction of the sliding rod through a transmission assembly, a stirring plate is connected to the push plate, two symmetrical pushing inclined surfaces are formed in the stirring plate, the included angle a between the two pushing inclined surfaces is an acute angle, and the edge of the push plate and the stirring plate has an arc surface.

[0007] The technical scheme realizes that the storage tank is placed in the heating tank, water is injected into the water storage area, the heating wire generates heat and heats the water after the heating wire is electrified, the heat is transmitted to the resin in the storage tank through the inner wall of the storage tank to heat the resin, the driving motor is started, the power rod rotates synchronously with the driving shaft in the case of positive and reverse rotation of the driving shaft, the push plate reciprocates along the length direction of the slide rod, the push plate drives the stirring plate to move, the stirring plate stirs the resin, and the temperature of the resin is more uniform through the guiding action of the push plate inclined surface; the stirring plate has two symmetrical push plate inclined surfaces, the included angle is an acute angle, and the edge is an arc surface, which helps to smoothly push the resin to flow, reduces turbulence and bubble formation, and the arc edge especially helps to avoid local pressure drop caused by sharp edges, reduces cavitation risk, thereby greatly reducing bubble generation, and achieving the purpose of improving 3D printing quality.

[0008] As a preferred scheme of the utility model, the included angle a is between 50° and 60°.

[0009] The technical scheme realizes that the included angle a in this angle range can effectively convert the linear motion of the stirring plate into a pushing force on the resin, so that the resin flows in the storage tank, thereby realizing uniform mixing; and compared with a smaller included angle or a larger included angle, the included angle between 50° and 60° can avoid generating too violent shearing action when the stirring plate pushes the resin, and too violent shearing is one of the main reasons for cavitation.

[0010] As a preferred scheme of the utility model, the conduction assembly comprises a conduction hole, a spiral rod and an arc-shaped groove, the conduction hole is arranged on the push plate, the arc-shaped groove is arranged on the inner wall of the conduction hole, the spiral rod is fixed to the outer wall of the power rod and surrounds the power rod once, the power rod passes through the conduction hole, and the spiral rod passes through the arc-shaped groove.

[0011] The technical scheme realizes that the driving motor drives, the driving shaft drives the power rod to rotate, the spiral rod rotates along the axis of the fixed rod and abuts against the inner wall of the arc-shaped groove, so that the push plate moves stably along the length direction of the slide rod under the transmission action of the spiral rod, and since the spiral rod surrounds the power rod only once, production is simple, production cost is reduced, and the moving speed of the push plate is not high, so the rotating speed of the power rod is relatively slow, which can greatly reduce the disturbance and bubbles caused by the rotation of the spiral rod, thereby further improving the 3D printing quality.

[0012] As a preferred scheme of the utility model, a rotating shaft is rotatably connected to the inner wall of the heating tank, and a paddle is connected to the rotating shaft.

[0013] The technical scheme is realized, and in the process that the driving shaft rotates, the rotating shaft is driven to rotate by the connecting mechanism, so that the hot water can flow and the resin can be uniformly heated.

[0014] As a preferred scheme of the utility model, the connecting mechanism comprises a first gear and a second gear, the first gear is fixed on the driving shaft, the second gear is fixed on the rotating shaft and engages with the first gear, and the outer diameter of the first gear is larger than that of the second gear.

[0015] The technical scheme is realized, and in the process that the driving shaft rotates, the rotating shaft is driven to rotate by the connecting mechanism, so that the hot water can flow and the resin can be uniformly heated.

[0016] As a preferred scheme of the utility model, a positioning hole is formed in the bottom wall of the heating tank, a supporting conical surface is formed at the opening of the positioning hole, a positioning protrusion is fixed on the bottom surface of the storage tank, a guiding conical surface is formed on the outer wall of the positioning protrusion, and the positioning protrusion penetrates into the positioning hole and makes the guiding conical surface contact with the supporting conical surface.

[0017] The technical scheme is realized, and in the process that the driving shaft rotates, the rotating shaft is driven to rotate by the connecting mechanism, so that the hot water can flow and the resin can be uniformly heated.

[0018] As a preferred scheme of the utility model, the surface of the stirring plate has a black oxide layer.

[0019] The technical scheme is realized, and in the process that the driving shaft rotates, the rotating shaft is driven to rotate by the connecting mechanism, so that the hot water can flow and the resin can be uniformly heated.

[0020] As a preferred scheme of the utility model, the driving shaft is connected with the power rod through a magnetic coupling.

[0021] The technical scheme is realized, and in the process that the driving shaft rotates, the rotating shaft is driven to rotate by the connecting mechanism, so that the hot water can flow and the resin can be uniformly heated. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the connecting structure of the heating tank and the main machine.

[0023] Figure 2 It is a schematic view of the connecting structure of the heating tank and the main machine.

[0024] Figure 3To embody the position of the paddle;

[0025] Figure 4 To embody the structure of the positioning hole;

[0026] Figure 5 To embody the structure of the storage tank;

[0027] Figure 6 To embody the position of the angle a

[0028] Figure 7 To embody the position of the angle a

[0029] Fig. 1, heating tank; 2, storage tank; 3, positioning hole; 4, support cone surface; 5, positioning protrusion; 6, guide cone surface; 7, heating wire; 8, driving motor; 9, driving shaft; 10, magnetic coupling; 11, sliding rod; 12, push plate; 13, conduction assembly; 14, conduction hole; 15, spiral rod; 16, arc-shaped groove; 17, stirring plate; 18, pushing inclined surface; 19, arc surface; 20, rotating shaft; 21, paddle; 22, connecting mechanism; 23, first gear; 24, second gear; 25, power rod; 100, main machine; 101, placing groove. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, so that the technical scheme of the present application is easier to understand and master.

[0031] A light-curing 3D printer with anti-bubble heating material tank, comprising a main machine 100, a heating tank 1 and a storage tank 2, the heating tank 1 is placed in the placing groove 101 of the main machine 100, the storage tank 2 is located in the inside of the heating tank 1, four positioning holes 3 with circular cross section are opened on the bottom wall of the heating tank 1, and support cone surfaces 4 are opened at the openings of the positioning holes 3. Four positioning protrusions 5 are fixed on the bottom surface of the storage tank 2, and the four positioning protrusions 5 are respectively located at the four corners of the storage tank 2. Guide cone surfaces 6 are opened on the outer walls of the positioning protrusions 5. The positioning protrusions 5 are inserted into the positioning holes 3 and the guide cone surfaces 6 are in contact with the support cone surfaces 4, so that the storage tank 2 and the heating tank 1 are not easy to move relatively.

[0032] After the storage tank 2 is placed in the heating tank 1, a water storage area is formed between the heating tank 1 and the storage tank 2, water is injected into the water storage area, and resin is located in the storage tank 2. The heating wire 7 is fixedly connected to the inner wall of the heating tank 1, and the heating wire 7 is electrified, so that the water can be heated. Hot water can heat the resin through the storage tank 2. The storage tank 2 is made of aluminum alloy.

[0033] The driving motor 8 is fixed on the outer wall of the heating tank 1, and the driving motor 8 is a servo motor.

[0034] The driving shaft 9 of the driving motor 8 penetrates the heating groove 1, and a sealing ring is arranged between the driving shaft 9 and the heating groove 1. The driving shaft 9 is connected with a power rod 25 through a magnetic coupling 10, and the power rod 25 is rotatably connected in the storage groove 2, so that the driving motor 8 can drive the power rod 25 to rotate without opening a through hole in the storage groove 2. The power rod 25 is in a cylindrical shape.

[0035] A slide rod 11 parallel to the axis of the power rod 25 is fixed in the storage groove 2, and the slide rod 11 is a light rod. A push plate 12 is slidably connected on the slide rod 11, and the power rod 25 rotates and drives the push plate 12 to move along the length direction of the slide rod 11 through a transmission assembly 13.

[0036] The transmission assembly 13 comprises a transmission hole 14, a spiral rod 15 and an arc-shaped groove 16. The transmission hole 14 is circular in cross section and is arranged on the push plate 12, and the arc-shaped groove 16 is arranged on the inner wall of the transmission hole 14. The spiral rod 15 is fixed on the outer wall of the power rod 25 and surrounds the power rod 25, the power rod 25 penetrates the transmission hole 14, and the spiral rod 15 penetrates the arc-shaped groove 16.

[0037] When the driving motor 8 is started, the driving shaft 9 drives the power rod 25 to rotate through the magnetic coupling 10, the spiral rod 15 rotates along the axis of the power rod 25, and the spiral rod 15 is in contact with the inner wall of the arc-shaped groove 16 to drive the push plate 12 to move along the length direction of the slide rod 11.

[0038] The stirring plate 17 is fixedly connected on the upper surface of the push plate 12, two symmetrical pushing slopes 18 are arranged on the stirring plate 17, and the included angle a between the two pushing slopes 18 is 55°. The stirring plate 17 is in an isosceles triangular shape in cross section.

[0039] The arc-shaped surface 19 is arranged on the edge of the push plate 12 and the stirring plate 17.

[0040] The push plate 12 and the stirring plate 17 are integrally arranged and are made of aluminum alloy, and a black oxide layer is arranged on the outer wall of the push plate 12 and the stirring plate 17. The black oxide layer is formed by black anodizing.

[0041] When the driving motor 8 is started, the driving shaft 9 drives the power rod 25 to rotate slowly through the magnetic coupling 10, and the rotation angle of the driving shaft 9 is less than 360°. The stirring plate 17 moves along the length direction of the slide rod 11, and the resin can be uniformly stirred through the transmission of the stirring slope, and the generation of bubbles can be greatly reduced. The driving motor 8 is a servo motor, so that the stirring plate 17 can move reciprocatingly and stably.

[0042] A rotating shaft 20 is rotatably connected to the inner wall of the heating tank 1, and a paddle 21 is fixedly connected to the outer wall of the rotating shaft 20, and a plurality of paddles 21 are evenly distributed along the axis of the rotating shaft 20. The axis of the rotating shaft 20 is parallel to the axis of the driving shaft 9. The driving shaft 9 rotates and rotates the rotating shaft 20 through a connecting mechanism 22.

[0043] The connecting mechanism 22 comprises a first gear 23 and a second gear 24, the first gear 23 is fixed on the driving shaft 9, the second gear 24 is fixed on the rotating shaft 20 and is engaged with the first gear 23, and the outer diameter of the first gear 23 is four times the outer diameter of the second gear 24. When the first gear 23 rotates one circle, the second gear 24 rotates multiple circles, so that the paddle 21 rotates quickly and the hot water flows to uniformly heat the resin.

[0044] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and the technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of the present application.

Claims

1. A light-cured 3D printer with an anti-bubble heating material tank, comprising a main machine (100), a heating tank (1) and a storage tank (2), the heating tank (1) is placed in the placing tank (101) of the main machine (100), the storage tank (2) is located in the inside of the heating tank (1), the storage water area is formed between the heating tank (1) and the storage tank (2), the heating wire (7) is fixedly connected on the inner wall of the heating tank (1), and the driving motor (8) is fixed on the outer wall of the heating tank (1), characterized in that: The driving shaft (9) of the driving motor (8) penetrates the heating groove (1), the driving shaft (9) is connected with a power rod (25), the power rod (25) is located in the storage groove (2), a sliding rod (11) parallel to the axis of the power rod (25) is fixed in the storage groove (2), a push plate (12) is slidably connected to the sliding rod (11), the power rod (25) rotates and moves the push plate (12) along the length direction of the sliding rod (11) through a transmission assembly (13), a stirring plate (17) is connected to the push plate (12), two symmetrically arranged pushing inclined surfaces (18) are formed in the stirring plate (17), the included angle a between the two pushing inclined surfaces (18) is an acute angle, and the edges of the push plate (12) and the stirring plate (17) have arc surfaces (19). ​ 2. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: The angle of the included angle a is between 50° and 60°.

3. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: The transmission assembly (13) comprises a transmission hole (14), a spiral rod (15) and an arc-shaped groove (16), the transmission hole (14) is formed in the push plate (12), the arc-shaped groove (16) is formed in the inner wall of the transmission hole (14), the spiral rod (15) is fixed to the outer wall of the power rod (25) and surrounds the power rod (25) for one turn, the power rod (25) penetrates the transmission hole (14), and the spiral rod (15) penetrates the arc-shaped groove (16).

4. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: A rotating shaft (20) is rotatably connected to the inner wall of the heating groove (1), a paddle (21) is connected to the rotating shaft (20), and the driving shaft (9) rotates and drives the rotating shaft (20) to rotate through a connecting mechanism (22).

5. The light-cured 3D printer with anti-bubble heating material tank according to claim 4, characterized in that: The connecting mechanism (22) comprises a first gear (23) and a second gear (24), the first gear (23) is fixed to the driving shaft (9), the second gear (24) is fixed to the rotating shaft (20) and meshes with the first gear (23), and the outer diameter of the first gear (23) is greater than that of the second gear (24).

6. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: A positioning hole (3) is formed in the bottom wall of the heating groove (1), a supporting conical surface (4) is formed at the opening of the positioning hole (3), a positioning protrusion (5) is fixed to the bottom surface of the storage groove (2), a guide conical surface (6) is formed in the outer wall of the positioning protrusion (5), the positioning protrusion (5) penetrates the positioning hole (3) and makes the guide conical surface (6) contact with the supporting conical surface (4).

7. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: The surface of the stirring plate (17) has a black oxide layer.

8. The light-cured 3D printer with anti-bubble heating material tank according to claim 1, characterized in that: The driving shaft (9) is connected with the power rod (25) through a magnetic coupling (10).

Images