3D printing binder heating, stirring and extruding device

Abstract

The invention discloses a 3D printing binder heating, stirring and extruding device. Belongs to the technical field of 3D printing. A power switch is arranged on the left side of a material barrel, and a rotary baffle controller, a rotary switch and a temperature controller are arranged below the power switch; the rotary switch, the temperature controller and the rotary baffle controller are independently operated, and the power switch controls the extrusion device to operate; the connecting seat is connected with a rotating disc, a stirring rod is arranged in the rotating disc, a heating base is arranged below the material barrel, a rotating baffle is arranged below the heating base, the rotating baffle is connected with the heating base, and the rotating baffle is connected with a runner; and the converging part of the four runners is positioned right above the extrusion head. According to the binder heating, stirring and extruding device, the effects of binder temperature control, uniform mixing, flow control and flexible extrusion speed control in the printing process can be achieved, the binder can be prevented from being solidified and blocked, normal extrusion of the binder is ensured, meanwhile, the extrusion speed is controlled, the automation degree of 3D printing is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of 3D printing and relates to a 3D printing adhesive heating and extrusion device. Background Art

[0002] In the existing technology, 3D printing belongs to the category of rapid prototyping technology, also known as additive manufacturing; it is based on digital model files, using powder / wire-shaped metal or plastic and other bondable materials to achieve physical construction of digital models through layer-by-layer printing; 3D printing is usually achieved with the help of digital technology material printers, and is widely used in mold manufacturing, industrial design and other fields, and is often used in model manufacturing. Later, with the improvement of 3D printing technology, it was gradually applied to the direct manufacturing of some products; in the field of 3D printing, binders are indispensable bonding materials.

[0003] However, the existing 3D printing adhesive extrusion device has several defects; for example, the existing 3D printing adhesive will be affected by the external environmental temperature, causing the adhesive extrusion device to be blocked, thereby affecting the normal extrusion work; in addition, the viscosity of the adhesive will change with temperature, and too high or too low temperature will affect the bonding effect of the adhesive. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a 3D printing adhesive heating extrusion device.

[0005] The technical solution of the present invention is: a 3D printing binder heating and stirring extrusion device of the present invention comprises a material barrel, a heating base and a rotating baffle arranged on the bottom side of the heating base are arranged below the inner cavity of the material barrel, and the heating base and the rotating baffle are connected by inserted bolts and nuts;

[0006] Four flow channels are connected to the other side of the rotating baffle, and the other ends of the four flow channels are combined into a total extrusion head.

[0007] Furthermore, the four holes formed on the rotating baffle are consistent in size and distribution with the holes of the four flow channels.

[0008] Furthermore, the four flow channel corners are curved arc transitions, and the four flow channel converging points are located directly above the extrusion head.

[0009] Furthermore, the heating base can adjust the temperature of the adhesive to a range of 150 to 300°C;

[0010] The nozzle diameter of the extrusion head is 0.4 mm.

[0011] Furthermore, a connecting seat is arranged at the upper end of the material barrel, and a rotating motor is connected inside the connecting seat.

[0012] Furthermore, a rotating disc is installed at the bottom end of the rotating motor, and the rotating motor and the rotating disc are connected by inserted bolts.

[0013] Furthermore, a stirring rod is arranged in the rotating disc, and the rotating motor, the rotating disc and the stirring rod are connected.

[0014] Furthermore, the stirring rod is made of glass.

[0015] Furthermore, a power switch, a rotary baffle controller, a rotary switch and a temperature controller are respectively arranged on the left side of the material barrel from top to bottom;

[0016] The rotary baffle controller, rotary switch and temperature controller are all operated independently;

[0017] The power switch controls the switch of the extrusion device circuit through a wireless signal;

[0018] The rotating baffle controller, the rotating switch, and the temperature controller respectively control the rotating baffle, the rotating disc, and the heating base through a PLC remote control module;

[0019] The rotary switch is connected to the heating base through a line.

[0020] Furthermore, the rotating baffle controller, the rotating switch and the temperature controller are all connected to the monitoring switchboard.

[0021] Beneficial effects: 1. In the present invention, after the power switch is turned on, the temperature is set by the temperature controller, and the heating base can be used to heat the adhesive. The stirring rod stirs the adhesive to mix the adhesive evenly, avoiding inconsistent temperatures of adhesives at different positions. The heating base can keep the adhesive at a stable temperature to avoid solidification and blockage of the adhesive, ensuring normal extrusion of the adhesive, and the operation is simple, labor-saving and trouble-free; 2. The rotating baffle is rotated by adjusting the rotating baffle controller. At this time, the intersection area of ​​the rotating baffle circular hole and the circular holes of the four flow channels gradually decreases. Thereby controlling the flow rate entering the flow channel; at the same time, when the circular hole of the rotating baffle and the circular hole of the flow channel do not intersect, the adhesive in the inner cavity cannot enter the flow channel; therefore, the size of the discharge port can be adjusted by adjusting the rotating baffle controller to control the rotation angle of the rotating baffle, thereby adjusting the flow of the flow channel, thereby realizing the size adjustment of the extrusion amount, greatly improving the practicality of the equipment, and the adjustment method is simple and convenient, labor-saving and easy to control; 3. In the present invention, the four flow channel corners are curved arc transitions, which can reduce the pressure loss during the flow process, and the four flow channel confluences in the extrusion device are located directly above the extrusion head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the rotating baffle and the flow channel in the present invention;

[0024] Figure 3 It is a schematic diagram of the connection between the rotating disk and the stirring rod in the present invention;

[0025] In the figure: 1 is a rotating motor, 2 is a rotating disc, 3 is a bolt, 4 is a stirring rod, 5 is a rotating baffle, 6 is a bolt and nut, 7 is a connecting seat, 8 is a power switch, 9 is a rotating baffle controller, 10 is a rotary switch, 11 is a temperature controller, 12 is a heating base, 13 is an extruder head, and 14 is a material barrel. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] As shown in the figure, a 3D printing binder heating extrusion device according to the present invention comprises a material barrel 14, a power switch 8 is installed on the upper left side of the material barrel 14, a rotating baffle controller 9 is installed below the power switch 8, a rotating switch 10 is provided below the rotating baffle controller 9, and a temperature controller 11 is installed below the rotating switch 10;

[0028] The rotary switch 10, the temperature controller 11 and the rotary baffle controller 9 operate independently;

[0029] The power switch 8 controls the switch of the extrusion device circuit through a wireless signal;

[0030] The rotating baffle controller 9, the rotating switch 10, and the temperature controller 11 respectively control the rotating baffle 5, the rotating disc 2, and the heating base 12 through the PLC remote control module;

[0031] The rotary switch 10 is connected to the heating base 12 through a circuit;

[0032] The rotary baffle controller 9, the rotary switch 10 and the temperature controller 11 are all connected to the monitoring switchboard.

[0033] Furthermore, a connection seat 7 is installed at the top of the material barrel 14, a rotating motor 1 is connected in the connection seat 7, a rotating disc 2 is arranged at the bottom of the rotating motor 1, the rotating motor 1 and the rotating disc 2 are connected by bolts 3, the rotating motor 1 controls the rotation of the rotating disc 2, and a stirring rod 4 is arranged in the rotating disc 2;

[0034] A heating base 12 is installed below the material barrel 14, and a rotating baffle 5 is installed at the bottom of the heating base 12. The heating base 12 is connected to the rotating baffle 5 by bolts and nuts 6. The rotating baffle 5 is located above the flow channel and the flow channel is combined into an extrusion head 13.

[0035] The heating base 12 below the inner cavity of the material barrel 14 plays a role in heating the adhesive. The rotating disc 2 is provided with a circular hole for embedding the stirring rod 4. The adhesive can be mixed evenly by rotation to avoid inconsistent adhesive temperatures at different positions. The heating base 12 can keep the adhesive at a stable temperature to avoid adhesive solidification and clogging, thereby ensuring normal extrusion of the adhesive.

[0036] The four holes of the rotating baffle 5 are consistent in size and distribution with the holes of the four flow channels. The rotating baffle 5 can be used to control the flow rate of the adhesive. The flow rate is maximum when the four holes of the rotating baffle 5 completely overlap with the holes of the flow channel; when the four holes of the rotating baffle 5 do not completely overlap with the holes of the flow channel, the flow rate decreases accordingly; when the four holes of the rotating baffle 5 do not completely overlap with the holes of the flow channel, the flow rate is 0, and the adhesive can be in a heating state at this time.

[0037] Furthermore, the corners of the flow channels at the four locations are curved arc transitions, which can reduce pressure loss during the flow process, and the confluence of the flow channels at the four locations is located directly above the extrusion head 13 .

[0038] In the present invention, the binder in the material barrel 14 is extruded from the extruder head 13, and the binder is heated by the heating base 12 and stirred by the stirring rod 4, so that the temperature of the binder is uniform at all places; after a certain period of heating and stirring, the temperature of the binder is compared, and if it is higher than the standard reference temperature, the rotating baffle 5 is closed by the rotating baffle controller 9, and the stirring is started by the rotating switch 10; if it is lower than the standard reference temperature, the rotating baffle 5 is closed by the rotating baffle controller 9, the binder is heated by turning on the heating base 12, and the stirring is started by the rotating switch 10;

[0039] By rotating the switch 10, the stirring rod 4 can stir the adhesive, mix the adhesive evenly, avoid inconsistent adhesive temperatures at different positions, keep the adhesive at a stable temperature, avoid adhesive solidification and blockage, and ensure normal extrusion of the adhesive.

[0040] The rotating baffle 5 is rotated by adjusting the rotating baffle controller 9. At this time, the intersection area of ​​the circular hole of the rotating baffle 5 and the circular holes of the four flow channels gradually decreases, thereby controlling the flow rate entering the flow channel; at the same time, when the circular hole of the rotating baffle 5 and the circular hole of the flow channel do not intersect, the adhesive in the inner cavity cannot enter the flow channel; therefore, the rotating angle of the rotating baffle 5 can be controlled by adjusting the rotating baffle controller 9, so that the size of the discharge port can be adjusted, and then the flow rate of the flow channel can be adjusted, thereby realizing the size adjustment of the extrusion amount.

[0041] Furthermore, the structure inside the material barrel 14 fits tightly and the heat is evenly conducted, so that the temperature of the printing material inside the material barrel 14 can change rapidly. The structure can be made of metal material with good thermal conductivity.

[0042] Furthermore, the stirring rod 4 is made of glass, which has low cost and is easy to disassemble and assemble.

[0043] The heating base 12 can adjust the temperature of the adhesive in the range of 150 to 300°C, and can be used to control the temperature of the material barrel 14 in real time by reflecting the temperature of the adhesive, heating at a rate of 0.5 to 10°C, and turning the heating base 12 on and off.

[0044] Furthermore, the nozzle diameter of the extrusion head 13 is 0.4 mm.

[0045] Embodiment 1:

[0046] The 3D printing binder heating and stirring extrusion device provided in this embodiment can effectively control the temperature of the printing material; it includes an extrusion unit, a heating unit, a stirring unit, and a control unit;

[0047] The extrusion unit includes an extrusion port 13 and a material barrel 14 to achieve 3D printing;

[0048] The heating unit includes a heating base 12 and a rotary baffle switch 5, which are used to adjust the temperature of the adhesive, and the adjustment range is: 150-300°C. The adhesive temperature is controlled to reach the reference temperature range, and the flow of the adhesive is achieved by opening the rotary baffle 5;

[0049] The stirring unit comprises a rotating motor 1, a rotating disc 2, and a stirring rod 4. The stirring rod 4 is made of glass and can be disassembled and assembled. A rotating switch 10 can adjust the rotation speed and the stirring rate of the stirring rod 4.

[0050] The material barrel 14 is made of metal material with good thermal conductivity, and the heat is evenly conducted, so that the printing material in the material barrel 14 can be quickly heated up and cooled down;

[0051] The flow channel and the extruder head 13 are connected to the lower side of the material barrel 14 to provide extrusion pressure to force the printing material in the material barrel 14 to be extruded from the extrusion port.

Claims

1. A 3D printing binder heating, stirring and extruding device, characterized in that: It comprises a material barrel (14), a heating base (12) is arranged below the inner cavity of the material barrel (14), a rotating baffle (5) is arranged on the bottom side of the heating base (12), and the heating base (12) and the rotating baffle (5) are connected by inserted bolts and nuts (6); Four flow channels are connected to the other side of the rotating baffle (5), and the other ends of the four flow channels are combined into a total extrusion head (13).

2. A 3D printing binder heating, stirring and extruding device according to claim 1, characterized in that: The four holes formed on the rotating baffle (5) are consistent in size and distribution with the holes of the four flow channels.

3. A 3D printing binder heating, stirring and extruding device according to claim 1, characterized in that: The four flow channel corners are curved arc transitions, and the confluence of the flow channels is located directly above the extrusion head (13).

4. A 3D printing binder heating, stirring and extruding device according to claim 1, characterized in that: The heating base (12) achieves an adhesive temperature adjustment range of 150 to 300° C. The nozzle diameter of the extrusion head (13) is 0.4 mm.

5. The 3D printing binder heating, stirring and extruding device according to claim 1, characterized in that: A connecting seat (7) is arranged at the upper end of the material barrel (14), and a rotating motor (1) is connected inside the connecting seat (7).

6. A 3D printing binder heating, stirring and extruding device according to claim 5, characterized in that: A rotating disc (2) is installed at the bottom end of the rotating motor (1), and the rotating motor (1) and the rotating disc (2) are connected via inserted bolts (3).

7. A 3D printing binder heating, stirring and extruding device according to claim 6, characterized in that: A stirring rod (4) is arranged in the rotating disc (2); The rotating motor (1), the rotating disc (2) and the stirring rod (4) are connected.

8. A 3D printing binder heating, stirring and extruding device according to claim 7, characterized in that: The stirring rod (4) is made of glass.

9. A 3D printing binder heating, stirring and extruding device according to claim 6, characterized in that: On the left side of the material barrel (14), a power switch (8), a rotary baffle controller (9), a rotary switch (10) and a temperature controller (11) are arranged from top to bottom. The rotary baffle controller (9), the rotary switch (10) and the temperature controller (11) are all independently operated; The power switch (8) controls the switch of the extrusion device circuit through a wireless signal; The rotating baffle controller (9), the rotating switch (10), and the temperature controller (11) respectively and correspondingly control the rotating baffle (5), the rotating disc (2), and the heating base (12) through a PLC remote control module; The rotary switch (10) is connected to the heating base (12) via a line.

10. A 3D printing binder heating, stirring and extruding device according to claim 9, characterized in that: The rotary baffle controller (9), the rotary switch (10) and the temperature controller (11) are all connected to a monitoring switchboard.

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