CN211994220U

CN211994220U - 3D prints extruder

Info

Publication number: CN211994220U
Application number: CN202020117354.5U
Authority: CN
Inventors: 张昱; 石峰
Original assignee: Shanghai Coin Robotics Technology Co ltd
Current assignee: Shanghai Coin Robotics Technology Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-11-24
Anticipated expiration: 2030-01-18

Abstract

The utility model provides a 3D printing extruder, which comprises a servo motor, a planetary reducer, a coupler and a screw rod; the servo motor is axially and downwards connected with a planetary reducer, the planetary reducer is axially and downwards connected with a coupler, and the coupler is downwards connected with a screw rod; a sleeve is arranged on the outer side of the joint of the coupler and the screw, the sleeve is connected below the coupler, the sleeve is downwards connected with the charging barrel, a feeding hole is formed in the sleeve and communicated with the charging barrel, and an annular water cooling groove is formed in the sleeve; the bottom of the charging barrel is a discharge hole; the outer wall of the charging barrel is surrounded by a spring heating ring, more than one thermocouple is fixed on the charging barrel, and the thermocouple is connected with the spring heating ring. The utility model discloses a 3D prints extruder and uses the screw rod to extrude to and use the control of many temperature sections to reach the ability that high throughput extruded in the small-size equipment. The utility model provides a small-size 3D printing apparatus can't carry out high-efficient high-yield print under the prerequisite of guaranteeing printing quality.

Description

3D prints extruder

Technical Field

The utility model belongs to 3D prints the field, concretely relates to 3D prints extruder.

Background

The 3D prints the use of extruder generally, and current 3D prints the extruder and generally is horizontal, and the quality is great, and ejection of compact speed is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists, a 3D prints extruder is provided, mainly used 3D prints to it is great to solve current 3D and print extruder quality, the limited problem of discharge speed.

The utility model provides an above-mentioned technical problem's technical scheme as follows: A3D printing extruder comprises a servo motor, a planetary reducer, a coupler and a screw; the servo motor is axially and downwards connected with the planetary reducer, the planetary reducer is axially and downwards connected with the coupler, and the coupler is downwards connected with the screw; a sleeve is arranged on the outer side of the joint of the coupler and the screw rod, the sleeve is connected below the coupler, the sleeve is downwards connected with a charging barrel, a feeding hole is formed in the sleeve, the feeding hole is communicated with the charging barrel, and an annular water cooling groove is formed in the sleeve; the bottom of the charging barrel is a discharge hole; the spring heating ring is arranged on the outer wall of the charging barrel in a surrounding mode, more than one first thermocouple is fixed on the charging barrel, and the first thermocouple is connected with the spring heating ring.

The utility model discloses further set up to, the shell of shaft coupling with be fixed with the bearing gland between the planetary reducer.

The utility model discloses further set up to, the bottom outer wall of feed cylinder is fixed with fixed cover, the bottom of fixed cover is fixed with the solid fixed ring of heating, be equipped with the heating rod in the solid fixed ring of heating, the second thermocouple is being connected to the heating rod, the second thermocouple is inserted solid fixed ring of heating is last.

The utility model discloses further set up to, be equipped with hollow mouth that hinders in the heating solid fixed ring, the pot head that hinders the mouth is in the feed cylinder tip, the other end that hinders the mouth does the discharge gate, be equipped with the tool withdrawal groove on the inner wall that hinders the mouth.

The utility model discloses further set up to, first thermocouple has two, is located respectively the sleeve with the junction of feed cylinder and the middle part of feed cylinder.

The utility model discloses further set up to, servo motor with planetary reducer's outside is through the screw fixation, the sleeve with the screw fixation is passed through to the outside of feed cylinder.

The utility model discloses further set up to, telescopic outside has the mounting base through the screw fixation.

The utility model discloses further set up to, be equipped with the intercommunication in the feed cylinder the stock chest of feed inlet.

The utility model discloses a 3D prints extruder and uses the screw rod to extrude to and use the control of many temperature sections to reach the ability that high throughput extruded in the small-size equipment. Wherein, a screw extrusion mode is used to adapt to more various raw materials. The spring heating ring (melting section) with high heating density and more efficient heat conduction is used, and the raw material melting efficiency is improved. The utility model provides a small-size 3D printing apparatus can't carry out high-efficient high-yield print under the prerequisite of guaranteeing printing quality.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic structural view of the choke.

Wherein, 1, a servo motor; 2. a planetary reducer; 3. a coupling; 4. a screw; 5. a charging barrel; 6. a bearing gland; 7. a sleeve; 8. a feed inlet; 9. a water cooling tank; 10. a discharge port; 11. a spring heating coil; 12. a first thermocouple; 13. mounting a base; 14. a screw; 15. fixing a sleeve; 16. heating the fixed ring; 17. a heating rod; 18. a second thermocouple; 19. a storage tank; 20. blocking the mouth; 21. and (4) tool withdrawal grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an embodiment, a 3D prints extruder, including servo motor 1, planetary reducer 2, shaft coupling 3 and screw rod 4. The axial of servo motor 1 is connected with planetary reducer 2 down, and the axial of planetary reducer 2 is connected with shaft coupling 3 down, is fixed with bearing gland 6 between the shell of shaft coupling 3 and planetary reducer 2, and shaft coupling 3 is connected with screw 4 down. The outside of the junction of shaft coupling 3 and screw rod 4 is equipped with sleeve 7, and sleeve 7 is connected under shaft coupling 3, and sleeve 7 is connecting feed cylinder 5 downwards, and it has feed inlet 8 to open on sleeve 7, and feed inlet 8 communicates feed cylinder 5, and it has annular water-cooling tank 9 to open in the sleeve 7. The bottom of the charging barrel 5 is a discharge hole 10. The outer wall of the charging barrel 5 is surrounded by a spring heating ring 11, more than one first thermocouple 12 is fixed on the charging barrel 5, and the first thermocouple 12 is connected with the spring heating ring 11. Specifically, the servo motor 1 and the planetary reducer 2 are fixed to each other by screws 14, and the sleeve 7 and the barrel 5 are fixed to each other by screws 14. The utility model discloses a servo motor 1 provides extrusion power, and operation precision and torque are improved to rethread planet speed reducer 2. Thereby, the screw 4 is controlled with high precision. The axial and radial loads of the screw rod 4 on the rear end speed reducer are reduced by using the coupler 3.

The outer wall of the bottom of the charging barrel 5 is fixed with a fixing sleeve 15, the bottom of the fixing sleeve 15 is fixed with a heating fixing ring 16, a heating rod 17 is arranged in the heating fixing ring 16, the heating rod 17 is connected with a second thermocouple 18, and the second thermocouple 18 is inserted on the heating fixing ring 16.

Further, there are two first thermocouples 12 located at the junction of the sleeve 7 and the barrel 5 and in the middle of the barrel 5. In this case, the heating section comprises three parts, two spring heating coils 11 (with a first thermocouple 12 inside), and a heating rod 17. The first thermocouple 12 at the junction of the sleeve 7 and the barrel 5 serves as thermal insulation protection (cooling of the water cooling tank 9, temperature detection by the first thermocouple 12 above), real-time temperature feedback at the middle of the barrel 5 (temperature detection by the first thermocouple 12 at the middle), and real-time temperature feedback at the bottom of the barrel 5 (heating by the heating rod 17, temperature detection by the second thermocouple 18 below). The heating efficiency of the spring heating coil 11 and the heating rod 17 is controlled by the feedback of the thermocouple, and the temperature change of the heating device is refined by the thermocouple inside the spring heating coil. The overall temperature fluctuation is controlled within the range of minus 1 ℃ to reduce the overheating phenomenon generated by thermal inertia in the heating process.

The end part of the screw rod 4 is a taper machine head, and the melt melting efficiency and the yield are improved by adopting a mode of extruding the screw rod 4. The melt is gathered at the outlet by using an internal taper machine head, and the internal pressure of the melt is increased, so that the extrusion of various materials is adapted. And the addition of an internal accumulator tank 19 in the feed section improves the feed efficiency of the feed section of the small screw 4. The water cooling tank 9 is added at the feeding section, so that the problem that the feeding port 8 is blocked due to the influence of high temperature at the front end on the feeding port 8 is solved.

A hollow blocking nozzle 20 is arranged in the heating fixing ring 16, one end of the blocking nozzle 20 is sleeved at the end part of the charging barrel 5, the other end of the blocking nozzle 20 is a discharging hole 10, and a tool withdrawal groove 21 is arranged on the inner wall of the blocking nozzle 20.

As an embodiment of the present invention, the outer side of the sleeve 7 is fixed with a mounting base 13 through a screw 14, and the mounting base 13 is plate-shaped, so as to be conveniently mounted on other devices.

The "upper" and "lower" of the present invention are not limited to the use direction thereof, and are only for convenience of description.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A3D printing extruder is characterized by comprising a servo motor, a planetary reducer, a coupler and a screw rod; the servo motor is axially and downwards connected with the planetary reducer, the planetary reducer is axially and downwards connected with the coupler, and the coupler is downwards connected with the screw; a sleeve is arranged on the outer side of the joint of the coupler and the screw rod, the sleeve is connected below the coupler, the sleeve is downwards connected with a charging barrel, a feeding hole is formed in the sleeve, the feeding hole is communicated with the charging barrel, and an annular water cooling groove is formed in the sleeve; the bottom of the charging barrel is a discharge hole; the spring heating ring is arranged on the outer wall of the charging barrel in a surrounding mode, more than one first thermocouple is fixed on the charging barrel, and the first thermocouple is connected with the spring heating ring.

2. The 3D printing extruder according to claim 1, wherein a bearing gland is fixed between the housing of the coupling and the planetary reducer.

3. The 3D printing extruder according to claim 1, wherein a fixing sleeve is fixed on the outer wall of the bottom of the charging barrel, a heating fixing ring is fixed on the bottom of the fixing sleeve, a heating rod is arranged in the heating fixing ring, the heating rod is connected with a second thermocouple, and the second thermocouple is inserted on the heating fixing ring.

4. The 3D printing extruder according to claim 3, wherein a hollow blocking nozzle is arranged in the heating fixing ring, one end of the blocking nozzle is sleeved on the end of the charging barrel, the other end of the blocking nozzle is the discharging port, and a tool withdrawal groove is arranged on the inner wall of the blocking nozzle.

5. The 3D printing extruder of claim 3, wherein there are two of the first thermocouples located at the junction of the sleeve and the barrel and in the middle of the barrel.

6. The 3D printing extruder according to claim 1, wherein the servo motor and the outside of the planetary reducer are fixed by screws, and the sleeve and the outside of the barrel are fixed by screws.

7. The 3D printing extruder according to claim 1, wherein a mounting base is fixed to the outside of the sleeve by screws.

8. The 3D printing extruder according to claim 1, wherein a storage tank communicated with the feed port is arranged in the charging barrel.