CN219294741U

CN219294741U - Compression roller device for 3D printing

Info

Publication number: CN219294741U
Application number: CN202220981398.1U
Authority: CN
Inventors: 方来红; 王丁一
Original assignee: Shanghai Shikuang Intelligent Technology Co ltd
Current assignee: Shanghai Shikuang Intelligent Technology Co ltd
Priority date: 2021-12-02
Filing date: 2022-04-14
Publication date: 2023-07-04
Anticipated expiration: 2032-04-14

Abstract

The present utility model provides a roll apparatus for 3D printing, comprising: a frame support; the compression roller device is connected to two sides of the frame bracket in a sliding way; the compression roller device comprises a compression roller base, a rotating motor, a nozzle assembly and a compression roller assembly; one end of the compression roller base is provided with a rotating motor, and the other end of the compression roller base is provided with a nozzle assembly; a compression roller assembly is connected below the nozzle assembly; the rotating motor drives the nozzle assembly to rotate; the pressure sensor is arranged on the compression roller assembly and is connected with the controller; the temperature sensor is arranged below the press roller underframe; the temperature sensor is connected with the controller; the cooling assembly comprises a cooling pipeline and a water chiller; the cooling pipeline penetrates through the compression roller of the compression roller assembly, and is connected with a water chiller; the water chiller is connected with the controller. According to the utility model, the purpose of rotating along with the moving direction of the 3D printing nozzle is realized by arranging the press roller and the controllable rotation of the press roller, so that the effect of continuously flattening the extruded melt in real time is achieved.

Description

Compression roller device for 3D printing

Technical Field

The utility model relates to the technical field of additive manufacturing, in particular to the technical field of a compression roller device for 3D printing.

Background

The composite material has the performances of high strength, high rigidity, corrosion resistance and the like, and is widely applied to the aerospace field; the 3D printing technology is utilized to manufacture the composite material, so that the composite material is a new way for realizing accurate molding and high-quality manufacturing of the manufactured composite material.

Because the existing 3D printing extrusion extrudes the melt (molten material) through the nozzle at the tail end to form a melt line, and the melt line is flattened and accumulated layer by layer, the size of the nozzle is limited, the line width of the printed line is narrower, the contact surface between layers of the composite material is smaller in the process of printing and accumulating layer by layer of the composite material, the interlayer binding force is relatively poorer, the interlayer performance of the manufactured composite material component is poorer, and the situation that the interlayer falls off and breaks easily occurs under the action of external force is caused. In addition, due to the limitation of the diameter of the nozzle, melt lines exceeding the line width of the diameter of the nozzle cannot be printed normally.

In addition, when the large-flow quick extrusion of the melt is performed, the printing speed cannot be too high due to the fact that the lines of the melt are accumulated in a short time in a large quantity, otherwise, when the next layer is printed, the melt collapses due to the fact that the temperature of the melt is too high, the printing speed is reduced, the next layer can be printed, and then the printing efficiency is affected.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a press roll apparatus for 3D printing, which is used to solve the problems of narrower printing line width, poorer interlayer performance and temperature control of a press roll assembly in the prior art, and to increase the heat dissipation rate of melt lines, thereby improving the printing efficiency.

To achieve the above and other related objects, the present utility model provides a roll apparatus for 3D printing, comprising:

a frame support;

the compression roller devices are connected to two sides of the frame support in a sliding manner; the compression roller device comprises a compression roller base, a rotating motor, a nozzle assembly and a compression roller assembly; one end of the compression roller base is provided with the rotating motor, and the other end of the compression roller base is provided with the nozzle assembly; the lower part of the nozzle assembly is connected with the compression roller assembly; the rotating motor drives the compression roller assembly to rotate;

the pressure sensor is arranged on the compression roller assembly and is connected with the controller;

the temperature sensor is arranged below the press roller underframe; the temperature sensor is connected with the controller;

the cooling assembly comprises a cooling pipeline and a water chiller; the cooling pipeline penetrates through the compression roller of the compression roller assembly, and is connected with the water chiller; the water chiller is connected with the controller.

Preferably: two sliding plates which are oppositely arranged are arranged on two sides of the nozzle assembly; each sliding plate is respectively connected with the same side of the frame bracket in a sliding way.

Preferably: the frame support is provided with a driving piece which drives the sliding plate to slide on the frame support; the driving piece is connected with the controller.

Preferably: the rotary motor is provided with a first belt wheel, the nozzle assembly is sleeved with a second belt wheel, and the first belt wheel drives the second belt wheel through a transmission belt.

Preferably: the nozzle assembly comprises a housing and a rotating shaft; one end of the press roll base penetrates through the shell, and the rotating shaft is connected with the shell in a rotating mode; the lower end of the rotating shaft is connected with the second belt wheel, a spray pipe is arranged in a hollow hole in the rotating shaft, and a nozzle is arranged below the spray pipe.

Preferably: the press roll assembly comprises two press roll mounting frames and press rolls; the two ends of the press roll are respectively arranged on the press roll mounting frames at the two sides; the compression roller mounting frame is arranged below the pressure sensor, and the pressure sensor is connected below the second belt wheel.

Preferably: the cooling pipeline comprises a compression roller pipeline, a water inlet channel, a water outlet channel, a first interface and a second interface; the press roller pipeline is arranged in the press roller, and the water inlet channel and the water outlet channel are both arranged in the rotating shaft; two ends of the compression roller pipeline are respectively connected with the water inlet channel and the water outlet channel; the first interface is connected with the water inlet channel, and the second interface is connected with the water outlet channel.

Preferably: the first annular cavity and the second annular cavity are arranged between the rotating shaft and the shell; the first annular cavity is connected with the water inlet channel and the first interface, and the second annular cavity is connected with the water outlet channel and the second interface.

Preferably: sealing plugs are arranged on the upper side and the lower side of the first annular cavity and the second annular cavity, and the sealing plugs are arranged between the shell and the rotating shaft.

Preferably: the temperature sensor is a laser sensor, the temperature sensor is arranged on a bracket, and the temperature sensor faces the press roller.

As described above, a roll apparatus for 3D printing of the present utility model has the following advantageous effects:

according to the utility model, the purpose of rotating along with the moving direction of the nozzle for 3D printing is realized by arranging the press roller and the controllable rotation of the press roller, so that the extruded melt lines are rolled continuously in real time, further wider melt lines are achieved, the contact area of melts between layers is increased, and further the interlayer binding force is increased. Meanwhile, as the cooled surface of the press roller is in real-time contact with the melt line, the heat dissipation rate of the melt line can be increased, and the printing efficiency is further improved.

Drawings

Fig. 1 is a perspective view showing a roll apparatus for 3D printing according to the present utility model;

fig. 2 is a perspective view showing a roll apparatus for 3D printing according to the present utility model excluding a frame bracket;

FIG. 3 shows a top view of a platen roller apparatus for 3D printing according to the present utility model without including a frame support;

fig. 4 shows a cross-sectional view in the direction A-A of fig. 3.

Fig. 5 shows an enlarged view of B of fig. 4;

fig. 6 is a front view showing that a roll apparatus for 3D printing of the present utility model does not include a frame bracket;

fig. 7 shows a cross-sectional view in the direction C-C of fig. 6.

Description of element reference numerals

1. Frame support

2. Compression roller device

21. Compression roller base

22. Rotary motor

221. First belt pulley

222. Belt with belt body

223. Second belt wheel

23. Nozzle assembly

231. Outer casing

232. Rotating shaft

232a screw down nut

232b bearing

233. Sliding plate

24. Compression roller assembly

241. Compression roller

242. Compression roller mounting frame

25. Driving piece

251. Screw rod

252. Screw nut pair

2521. Support frame

3. Pressure sensor

4. Temperature sensor

41. Support frame

511. Compression roller pipeline

511a press roll inlet interface

511b press roll outlet interface

512. Water inlet and outlet channel

512a outlet

513. Water outlet channel

513a inlet

514. First interface

515. Second interface

52. First annular cavity

53. Second annular cavity

a sealing ring

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1 to 7. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced. The drawings are not all referenced in the embodiments.

As shown in fig. 1, the present utility model provides a roll apparatus for 3D printing, comprising:

a frame support 1;

the compression roller device 2 is connected to the two sides of the frame support 1 in a sliding manner through a linear sliding component; the press roller device 2 comprises a press roller base 21, a rotary motor 22, a nozzle assembly 23 and a press roller assembly 24; the rotating motor 22 is arranged at one end of the press roller base 21, and the nozzle assembly 23 is arranged at the other end of the press roller base 21; a press roller assembly 24 is arranged below the nozzle assembly 23; the rotating motor 22 drives the nozzle assembly 23 to rotate;

a pressure sensor 3, the pressure sensor 3 being provided on the press roller assembly 24; the pressure sensor 3 is connected with the controller;

a temperature sensor 4, the temperature sensor 4 being provided under the press roller base 21; the temperature sensor 4 is connected with the controller;

the cooling assembly comprises a cooling pipeline and a water chiller; the cooling pipeline penetrates through the press roller 241 of the press roller assembly 24, and is connected with a water chiller; the water chiller is connected with the controller.

According to the utility model, the compression roller device 2 is arranged on the frame support 1 in a sliding way through the linear sliding component, so that the compression roller device 2 moves up and down on the frame support 1, and the compression roller device 2 moves up and down; in addition, the utility model realizes the pressing of the pressure roller assembly 24 on the melt line by arranging the pressure sensor 3 and the linear sliding assembly to cooperate with the up-and-down lifting pressure roller device 2, thereby realizing the adjustment of the pressure of the melt line, reducing the fluctuation of the rolling force and increasing the printing quality; in addition, the utility model realizes the rotation of the press roller assembly 24 through the arranged rotating motor 22, so that the press roller 241 can be always positioned at the rear side of the melt lines sprayed by the nozzle assembly 23, and the real-time pressing of the sprayed melt lines is realized; in addition, the temperature sensor 4 and the cooling component are arranged to realize the regulation and control of the temperature of the press roller 241, so that the melt line is cooled and shaped in real time.

In order to be able to move the roll arrangement 2 up and down in the frame support 1; as shown in fig. 1, the linear sliding assembly includes a slideway, a sliding plate 233 and a slider; two sliding plates 233 are arranged at two sides of the nozzle assembly 23; the lower end of each sliding plate 233 is connected to the press roller base 21, and the upper end of the same sliding plate 233 is slidably connected to the same side of the frame bracket 1. Specifically, the sliding plate 233 is slidably connected to a slide rail through a slider, and the slide rail is disposed on the outer side surface of the frame support 1 in the up-down direction.

In order to be able to move the roller device 2, a drive 25 is now provided to drive the sliding plate 233 to slide on the frame carrier 1. In particular, the driving member 25 may be a motor; the driver rotates the screw 251 through 25 so that the screw nut pair 252 can go up and down, and the screw nut pair 252 is connected to the slide plate 233 through the bracket 2521. The frame bracket 1 is fixed, and when the screw nut pair 252 moves up and down, the slide plate 233 can be driven to move up and down.

In addition, the driving piece 25 is connected with the controller, so the controller adjusts the driving piece 25 according to the pressure value fed back by the pressure sensor 3, thereby adjusting the height of the press roller 241, further changing the pressure of the melt lines received by the press roller 241, and improving the 3D printing quality. Specifically, when the height of the press roller 241 is adjusted, the height of the melt line formation is affected instantaneously, so that 3D printing with a variable cross section is realized.

To enable driving of the platen roller assembly 24; now a rotating motor 22 is provided to rotate the nozzle assembly 23; specifically, as shown in fig. 4, a first belt wheel 221 is arranged below the rotary motor 22, and a second belt wheel 223 is sleeved outside the nozzle assembly 23; the first pulley 221 may effect rotation of the second pulley 223 via the belt 222, thereby effecting rotation of the nozzle assembly 23. Since the lower part of the nozzle assembly 23 is connected with the pressing roller assembly 24, the pressing roller assembly 24 rotates along with the nozzle assembly 23; specifically, the lower portion of the nozzle assembly 23 is connected to the press roller mounting frame 242, so that the press roller mounting frame 242 rotates together with the nozzle assembly 23; so that the rotation direction of the pressing roller 241 can be identical to the movement direction of the nozzle assembly 23.

To enable the nozzle assembly 23 to be provided on the platen base 21; as shown in fig. 4, the nozzle assembly 23 now includes a housing 231 and a rotating shaft 232, one end of the press roller base 21 penetrates through the housing 231, the rotating shaft 232 is rotatably connected to the housing 231, and a nozzle is disposed in the rotating shaft 232. The above arrangement enables the housing 231 to support the rotation shaft 232.

In order to further avoid the axial movement of the rotating shaft 232, a tightening nut 232a is now disposed at the upper end of the rotating shaft 232, so as to ensure the axial fixation of the rotating shaft 232. In addition, in order to enhance the smoothness of the rotation shaft 232, a bearing 232b is now provided at the rotation shaft 232, and specifically, as shown in fig. 4, the bearing 232b is provided at the upper end of the rotation shaft 232 and between the rotation shaft 232 and the housing 231.

In addition, in order to enable a nozzle to be provided in the shaft 232, extrusion of a molten melt strand from the nozzle is achieved; now, an axial hollow hole is arranged on the rotating shaft 232, a spray pipe is arranged in the hollow hole, and a nozzle is connected below the spray pipe. In addition, the upper end of the spray pipe is connected with other parts of the spray head assembly, and a gap exists between the outer side of the spray pipe and the inner wall of the hollow hole, so that the rotary shaft 232 does not drive the spray pipe to rotate when rotating; and the second pulley 223 is fixedly coupled to the lower end of the rotation shaft 232 in order to realize the synchronous rotation of the rotation shaft 232 and the second pulley 223.

To effect installation of the press roller 241, as shown in FIG. 2, a press roller assembly 24 is now provided that includes a press roller mounting bracket 242 and a press roller 241; the two ends of the press roller 241 are respectively provided with a press roller mounting frame 242 at two sides. And in order to achieve the connection of the press roller assembly 24 with the second pulley 223, two press roller mounting frames 242 are respectively provided at both sides under the second pulley 223.

In order to realize the perception of the pressure roller 241 on the melt line, a pressure sensor 3 is arranged at the pressure roller 241; specifically, the pressure sensor 3 has an annular structure, and two sides of the lower surface of the pressure sensor 3 are respectively provided with a press roller mounting frame 242; and the pressure sensor 3 is provided under the second pulley 223.

In order to realize the cooling to the compression roller 241, a cooling pipeline is arranged at present, so that the cooling pipeline can realize the cooling of the compression roller 241 through the compression roller 241, and the damage to the compression roller 241 caused by the overheating of the compression roller 241 is avoided. In addition, the two ends of the cooling pipeline are respectively provided with an inlet and an outlet of the water chiller; specifically, a chiller (water-cooled chiller) cools the cooling water passing through the press roller 241, and the cooling water is fed into the press roller 241 to absorb heat from the press roller 241 after being cooled; the above-described process is repeated, thereby achieving cooling of the press roller 241.

Because the compression roller 241 rotates, if the pipeline connected with the water chiller is directly connected to the compression roller 241, the pipeline connected with the water chiller may be wound; to avoid the above, a cooling line is now provided including a platen roller line 511, a water inlet line 512, and a water outlet line 513; the compression roller pipeline 511 is arranged in the compression roller 241, two ends of the compression roller pipeline 511 are respectively connected with the water inlet channel 512 and the water outlet channel 513, and the water inlet channel 512 and the water outlet channel 513 are arranged in the rotating shaft 232; specifically, as shown in fig. 4 and 7, two ends of the press roller pipeline 511 are respectively provided with a press roller inlet interface 511a and a press roller outlet interface 511b; an outlet 512a of the water inlet channel 512 is connected with a press roller inlet interface 511a through a water inlet pipe, and an inlet 513a of the water outlet channel 513 is connected with a press roller outlet interface 511b through a water outlet pipe; because the rotation shaft 232 and the compression roller 241 rotate synchronously, when the rotation shaft 232 rotates, the water inlet path 512 and the water outlet path 513 in the rotation shaft 232 can supply cooling water to the compression roller pipelines 511 on the same side, so that the rotation of the rotation shaft 232 is prevented from winding the cooling pipelines arranged on the rotation shaft 232.

To supply cooling water to the water inlet passage 512 and discharge cooling water to the water outlet passage 513; now, a first port 514 is provided on the water intake path 512, and a second port 515 is provided on the water outlet path 513. Through the above arrangement, the first interface 514 is enabled to introduce cooled cooling water from the chiller into the water intake passage 512, while the heated cooling water of the water outlet passage 513 is introduced into the chiller through the second interface 515.

As shown in fig. 4, to facilitate the plugging of the first interface 514 and the second interface 515, the first interface 514 and the second interface 515 are now juxtaposed on the housing 231.

Because the rotating shaft 232 rotates continuously on the housing 231, and the first interface 514 and the second interface 515 are fixedly disposed on the housing 231, the first interface 514 cannot be directly connected to the water inlet 512; similarly, the second interface 515 cannot be directly connected to the outlet 513; to achieve connection of the first interface 514 with the water inlet channel 512 and connection of the second interface 515 with the water outlet channel 513; as shown in fig. 4 and 5, a first annular cavity 52 and a second annular cavity 53 are now disposed between the rotating shaft 232 and the housing 231, and the cooling water of the first interface 514 enters the first annular cavity 52 first, and then enters the water inlet path 512 from the first annular cavity 52; similarly, the discharged cooling water from the water outlet 513 enters the second annular chamber 53, and then enters the second port 515 from the second annular chamber 53 to be discharged to the water chiller. In addition, the flow direction of the cooling water may be reversed, and only the first port 514 and the second port 515 need to be exchanged with the pipeline connected to the water chiller, which is not described herein.

To achieve the above-mentioned tightness of the first annular chamber 52 and the second annular chamber 53; annular sealing plugs a are arranged on the upper side and the lower side of the first annular cavity 52, and similarly, annular sealing plugs a are arranged on the upper side and the lower side of the second annular cavity 53 and clamped between the rotating shaft 232 and the housing 231, so that cooling water in the first annular cavity 52 and the second annular cavity 53 is prevented from flowing out from between the rotating shaft 232 and the housing 231.

In order to be able to detect the temperature on the press roller 241 in a non-contact manner, damage to the temperature sensor 4 is avoided and the influence on the cooling formation of the melt strand is reduced; as shown in fig. 2, the temperature sensor 4 is now set as a laser sensor, and the temperature sensor 4 is set on a bracket 41; the detection head of the temperature sensor 4 faces the press roller 241, so that the temperature on the press roller 241 is detected in real time. In addition, according to the feedback of the temperature sensor 4, the controller can regulate and control the power and the flow of the water chiller to realize the real-time control of the temperature of the press roller 241.

In summary, the press roller 241 is provided, and the press roller 241 is controllably rotated, so that the purpose of rotating along with the moving direction of the 3D printing nozzle is achieved, and the effects of continuously flattening extruded melt lines in real time and realizing wider melt lines are achieved; in addition, the height of the press roller 241 is adjusted by sliding the driving piece 25 on the frame bracket 1, so that the size of the section of 3D printing can be well controlled, and the quality of 3D printing can be controlled; meanwhile, as cooling water is introduced into the press roller 241, the extruded material can be fully cooled and solidified while being flattened, and the non-contact temperature sensor 4 is configured, so that the cooling effect can be automatically adjusted in a mode of measuring the temperature of the melt line under the press roller 241, such as the temperature or flow of the cooling water, and the printing efficiency is improved; meanwhile, the pressure sensor 3 is installed, and the flattening quality can be judged according to the fluctuation of the flattening force to the pressing roller 241.

Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A platen roller apparatus for 3D printing, comprising:

a frame support;

the compression roller device is provided with a linear sliding component which is arranged up and down, and the linear sliding component is connected with the frame bracket in a sliding way; the compression roller device comprises a compression roller base, a rotating motor, a nozzle assembly and a compression roller assembly; the rotating motor is arranged at one end of the compression roller base, and the nozzle assembly is arranged at the other end of the compression roller base; the compression roller assembly is arranged below the nozzle assembly; the rotating motor drives the compression roller assembly to rotate;

2. A platen roller apparatus for 3D printing according to claim 1, wherein: two sliding plates which are oppositely arranged are arranged on two sides of the nozzle assembly; each sliding plate is respectively connected with the same side of the frame bracket in a sliding way.

3. A platen roller apparatus for 3D printing according to claim 2, wherein: the frame support is provided with a driving piece which drives the sliding plate to slide on the frame support; the driving piece is connected with the controller.

4. A platen roller apparatus for 3D printing according to claim 1, wherein: the rotary motor is provided with a first belt wheel, the nozzle assembly is sleeved with a second belt wheel, and the first belt wheel drives the second belt wheel through a transmission belt.

5. A platen roller apparatus for 3D printing according to claim 4, wherein: the nozzle assembly comprises a housing and a rotating shaft; one end of the press roll base penetrates through the shell, and the rotating shaft is connected with the shell in a rotating mode; the lower end of the rotating shaft is connected with the second belt wheel, a spray pipe is arranged in a hollow hole in the rotating shaft, and a nozzle is arranged below the spray pipe.

6. A platen roller apparatus for 3D printing according to claim 5, wherein: the press roll assembly comprises two press roll mounting frames and press rolls; the two ends of the press roll are respectively arranged on the press roll mounting frames at the two sides; the compression roller mounting frame is arranged below the pressure sensor, and the pressure sensor is connected below the second belt wheel.

7. A platen roller apparatus for 3D printing according to claim 5, wherein: the cooling pipeline comprises a compression roller pipeline, a water inlet channel, a water outlet channel, a first interface and a second interface; the press roller pipeline is arranged in the press roller, and the water inlet channel and the water outlet channel are both arranged in the rotating shaft; two ends of the compression roller pipeline are respectively connected with the water inlet channel and the water outlet channel; the first interface is connected with the water inlet channel, and the second interface is connected with the water outlet channel.

8. A platen roller apparatus for 3D printing according to claim 7, wherein: a first annular cavity and a second annular cavity are arranged between the rotating shaft and the shell; the first annular cavity is connected with the water inlet channel and the first interface, and the second annular cavity is connected with the water outlet channel and the second interface.

9. A platen roller apparatus for 3D printing according to claim 8, wherein: sealing plugs are arranged on the upper side and the lower side of the first annular cavity and the second annular cavity, and the sealing plugs are arranged between the shell and the rotating shaft.

10. A platen roller apparatus for 3D printing according to claim 6, wherein: the temperature sensor is a laser sensor, the temperature sensor is arranged on a bracket, and the temperature sensor faces the press roller.