CN112644021B

CN112644021B - 3D prints shower nozzle and equipment with surface treatment

Info

Publication number: CN112644021B
Application number: CN202011445799.7A
Authority: CN
Inventors: 朱协彬; 陈志浩; 赵禹; 李建生; 彭浩源; 孙正君; 孙祖亮
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2022-11-29
Anticipated expiration: 2040-12-09
Also published as: CN112644021A

Abstract

The invention discloses a 3D printing nozzle with surface treatment and equipment, belonging to the field of 3D printing, wherein the 3D printing nozzle comprises a lifting plate for bearing the printing nozzle, a rotatable rotating cylinder is sleeved outside the lifting plate, the lower end of the rotating cylinder is connected with a nozzle mounting block provided with a treatment liquid nozzle and a blowing nozzle, and the nozzle mounting block is connected with a second hydraulic cylinder capable of horizontally stretching; the 3D printing equipment comprises the 3D printing nozzle, an air collecting box, a driving button and a lug fixed on the thick rotating shaft, and the rising action of the 3D printing nozzle and the transmission linkage of the thick rotating shaft are realized through the arrangement of a rack and a large gear; the air collecting box is connected with the blowing nozzle through a pipeline, and the fan is coaxially connected with a pinion meshed with the large gear through a thin rotating shaft. The invention has better surface treatment function and better adaptability; the appearance of a printed product can be completely treated, and the printing efficiency can be improved; but also can save the cost and is convenient to control.

Description

3D prints shower nozzle and equipment with surface treatment

Technical Field

The invention relates to the field of 3D printing, in particular to a 3D printing spray head with surface treatment and equipment.

Background

3D printing (3D printing), namely a technological product of the rapid prototyping technology. It is a technology which uses powder metal or plastic etc. adhesive material to construct object by layer-by-layer printing mode based on digital model file. The 3D prints the shower nozzle through extruding the printing raw materials to 3D print platform on, forms three-dimensional entity then, beats printer head mainly and utilizes the continuous extrusion of formation of image printing raw materials, extrudees the spout of the printing raw materials of melt form through the nozzle, then the melt form prints the raw materials and piles up layer upon layer and realize the three-dimensional object shaping. The PVC linear material is formed by adopting a layer accumulation method, for example, the PVC linear material drives a gear to rotate through a stepping motor, the PVC material is sent into a spray head through the pressure of the gear, and is sprayed out after being heated and dissolved into fluid by utilizing the heat dissolution and condensation solidification principles of the PVC material, and three-dimensional objects in various required shapes are formed after being cooled layer by layer; the printing metal uses high-function laser or electron beam as heat source to melt metal powder layer by layer to form needed metal solid; spraying glue when printing the gypsum, and bonding layer by layer to realize a gypsum object; and the chocolate is printed by adopting an injection type spray head mode, spraying the chocolate layer by layer for printing and the like. The sculpturable soft bondable material of the printed ceramic paste type may also be screw extruded.

The existing 3D printer adopting spiral extrusion ejects materials through a nozzle, the smaller the nozzle is, the higher the surface precision is, and the material particles must be processed to be small enough. Because the sculptable soft material is generally larger than the particles of the PVC material. Namely, the particles of the PVC material are obtained, and the printed surface has concave-convex. This is due to the printing principle. Products having fine irregularities on the surface thereof are undesirable products for use in artificial ceramic bones, teeth, parts and the like for medical use. For example, a ceramic denture to be installed in medicine has minute irregularities, which are not easy to clean. With the micro-relief industrial ceramic parts, the friction force increases (except for the intentional increase of friction force). Therefore, the 3D printing product needs to be subjected to surface treatment so as to improve the smoothness of the surface of the product.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a 3D printing nozzle with surface treatment and equipment, which have a better surface treatment function and better adaptability; the complete treatment of the appearance of the printed product can be ensured, and the printing efficiency can be improved; but also can save the cost and is convenient to control.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a D printing nozzle with surface treatment and equipment comprises a printing nozzle, wherein the printing nozzle is installed on the bottom surface of a lifting plate which is horizontally arranged, a nozzle driving mechanism used for driving the printing nozzle to move is arranged on the bottom surface of the lifting plate, the lifting plate is a circular plate, a vertically arranged rotating cylinder body is sleeved on the outer side of the lifting plate, the rotating cylinder body is connected with the lifting plate through a first bearing, at least one nozzle installation block is installed at the lower end of the rotating cylinder body at equal intervals along the peripheral side of the rotating cylinder body, the outlet end of the nozzle installation block faces to the side of the central axis of the lifting plate, a treatment liquid nozzle is installed on the nozzle installation block, the input end of the treatment liquid nozzle is connected with a liquid discharge hose, and an electromagnetic valve is arranged on the liquid discharge hose; the improved lifting mechanism is characterized in that a horizontally arranged fixed gear ring is fixed at the upper end of the inner side face of the rotary cylinder, a vertically arranged motor is fixed on one side of the upper end face of the lifting plate, a driving gear meshed with the fixed gear ring is fixedly sleeved on an output shaft of the motor, and a vertically arranged first hydraulic cylinder is connected to the top face of the lifting plate.

Furthermore, the connecting end of the nozzle mounting block is connected with a second hydraulic cylinder which is horizontally arranged, and the bottom of the second hydraulic cylinder is connected with a supporting plate which is fixedly connected with the rotating cylinder body. Can drive shower nozzle installation piece through the second pneumatic cylinder and move on the horizontal direction, make its printing product that can be better be adapted to different width.

Furthermore, a limiting block is fixedly connected between the supporting plate and the rotating cylinder body, a through hole for the second hydraulic cylinder to pass through is horizontally arranged on the limiting block in a penetrating mode, and the sprayer mounting block is arranged on one side, back to the second hydraulic cylinder, of the limiting block. The limiting block with the through hole can limit the mounting position of the second hydraulic cylinder, and the spray head mounting block is prevented from deviating.

Furthermore, the nozzle mounting block is provided with a blowing nozzle positioned on one side of the treatment liquid nozzle, the input end of the blowing nozzle is connected with an exhaust branch pipe, and the exhaust branch pipe is provided with an electromagnetic valve. The blowing nozzle is arranged to blow air to the printing product attached with the treatment fluid, so that the treatment fluid is promoted to solidify and the printing product is integrated.

Furthermore, the motor is a forward and reverse rotating motor, the cross section of the spray head mounting block is arc-shaped, and two blowing spray heads respectively positioned at two sides of the treatment solution spray head are mounted on the spray head mounting block. The rotating cylinder body can be driven by the forward and reverse rotating motor to rotate forward and then reset in a reverse direction, and the spray head mounting block rotates along with the rotating cylinder body, so that the liquid discharge hose and the air exhaust branch pipe can be effectively prevented from being wound on other mechanisms; the treatment fluid shower nozzle can be along with shower nozzle installation piece round trip movement together, so all set up the shower nozzle of blowing in the both sides of treatment fluid shower nozzle, can guarantee at the unidirectional movement in-process of treatment fluid shower nozzle, all have a shower nozzle of blowing to the treatment fluid of just spraying behind the treatment fluid shower nozzle, can ensure the effect that promotes the treatment fluid solidification.

Further, the week side of lifter plate is fixed with the direction ring body that the level set up, and in the direction ring body embedding rotated the barrel, set up on the inside wall of rotation barrel and supply direction ring body embedding and pivoted ring channel. The lifting plate is inserted into the rotary cylinder body through the guide ring body and the annular groove, so that the lifting plate can ensure that the rotary cylinder body is synchronously driven to move in a lifting mode in the lifting moving process, and the rotation of the lifting plate relative to the rotary cylinder body is not influenced.

The invention also provides D printing equipment with surface treatment, which comprises a main machine body, wherein the upper end surface of the main machine body is provided with a bearing plate, and the upper end of the main machine body is connected with a frame plate.

Further, one side engaged type of gear wheel rack dorsad is equipped with a pinion, the fixed through type is equipped with a thin pivot on the axis of pinion, the one end of thin pivot is connected with the album of bellows with frame plate roof part fixed connection, the corresponding end of thin pivot extends to album inside and the fixed cover of bellows and is equipped with the fan, the position department that supplies the thin pivot to pass on the album bellows is equipped with the second bearing, another second bearing and frame plate fixed connection are passed through to the one end of thin pivot album bellows dorsad, an air intake has been seted up on the panel that album bellows is located fan the place ahead, album bellows is located and is connected with the hose of airing exhaust on the panel at fan rear, the output of the hose of airing exhaust communicates with the input of the branch pipe of airing exhaust, and is equipped with the check valve on the hose of airing exhaust. After the air collecting box and a related structure are arranged, the rotation of the large gear can drive the small gear to rotate, the rotation ratio of the large gear and the small gear is matched, the rotation speed of the small gear is larger than that of the large gear, the thin rotating shaft rotates along with the small gear to drive the fan to rotate, air can be sucked into the air collecting box through the air inlet and is delivered into the exhaust branch pipe through the exhaust hose, after the electromagnetic valve on the exhaust branch pipe is opened, air can be blown to a printing product sprayed with treatment liquid through the air blowing nozzle, and the solidification of the treatment liquid and the printing product can be promoted to be integrated.

Furthermore, an electric heating element positioned between the fan and the air exhaust hose is arranged in the air collecting box. When the device is used, the electric heating piece is electrified, the electric heating piece converts electric energy into heat energy, air entering the air collecting box can be heated, hot air is formed in the air collecting box, the hot air is blown to a printed product sprayed with the treatment fluid through the air exhaust hose and the air exhaust branch pipe, and the treatment fluid solidification can be further promoted.

3. Advantageous effects

(1) The 3D printing nozzle is provided with the lifting plate used for bearing the printing nozzle and the nozzle driving mechanism, the lifting plate is driven by the hydraulic cylinder to move up and down, the rotatable rotating cylinder is sleeved outside the lifting plate, the lower end of the rotating cylinder is connected with the treatment liquid nozzle, when the 3D printing nozzle is applied, the rotating cylinder is driven to rotate, the treatment liquid nozzle rotates along with the rotatable rotating cylinder, treatment liquid can be sprayed on a printed product while the treatment liquid is sprayed on the printed product while the treatment liquid is rotated around the printed product, and therefore the treatment liquid is sprayed on the peripheral sides of the printed product. Due to the principle of surface tension of the liquid of the treatment liquid, fine concave-convex parts of the printed product are covered by the sprayed concentrated liquid, namely a layer of smooth 'clothes' is worn on the surface of the printed product, and after the treatment liquid is solidified, the surface of the printed product can have higher smoothness, so that the surface treatment device has a surface treatment function.

(2) The 3D printing nozzle is provided with the nozzle mounting block for mounting the treatment liquid nozzle, the blowing nozzle which is positioned at one side of the treatment liquid nozzle and used for blowing air is mounted on the nozzle mounting block, and the blowing nozzle can blow the printing product attached with the treatment liquid to promote the treatment liquid to be solidified and the printing product to be integrated.

(3) The 3D printing nozzle is provided with the second hydraulic cylinder connected with the nozzle mounting block, and the second hydraulic cylinder can drive the nozzle mounting block to move in the horizontal direction, so that the treatment liquid nozzle and the blowing nozzle can be better suitable for printing products with different widths.

(4) The 3D printing equipment comprises the 3D printing nozzle, a driving button and a convex block which is fixed on the thick rotating shaft and used for triggering the driving button are further arranged, the rising action of the 3D printing nozzle and the transmission linkage of the thick rotating shaft are realized through the arrangement of a rack and a big gear, the 3D printing nozzle body gradually rises in the printing process, the thick rotating shaft can be driven to rotate through the transmission of the rack and the big gear, the convex block rotates along with the thick rotating shaft, the driving button is just triggered by the convex block when the 3D printing nozzle rises to a certain height (namely, a printed product is printed to a corresponding height successfully), namely, the rotary cylinder is driven to rotate through a controller, a corresponding electromagnetic valve is opened, and spraying treatment liquid is started, namely, once treatment liquid spraying is carried out on the printed product at the height every time when the product at the certain height is printed, the production process of the 3D printing product layer by layer printing forming is met, the complete spraying on the appearance of the printed product can be ensured, and in the process of spraying treatment liquid, the printing operation of the printing nozzle at the current height position can be not suspended, so that the printing efficiency can be improved.

(5) The 3D printing equipment comprises an air collecting box in which a fan is arranged, wherein the air collecting box is connected with a blowing nozzle through a pipeline, the fan is coaxially connected with a small gear meshed with a large gear through a thin rotating shaft, and when the 3D printing equipment is applied, the thin rotating shaft and the fan are driven to rotate through the transmission of a rack, the large gear and the small gear by the ascending action of the 3D printing nozzle, so that the air collecting function is realized, and the air is provided for the blowing of the blowing nozzle subsequently. The invention realizes the wind collecting function by utilizing the existing power source, does not need to additionally arrange wind collecting power, can save cost and is convenient to control.

In conclusion, the invention has better surface treatment function and better adaptability; the complete treatment of the appearance of the printed product can be ensured, and the printing efficiency can be improved; but also can save the cost and is convenient to control.

Drawings

Fig. 1 is a cross-sectional view of a 3D printing head of the present invention taken along a transverse vertical center plane, with exhaust manifolds 30 and drain hoses 34 not shown;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;

fig. 3 is a partial cross-sectional view of the 3D printing apparatus according to the present invention, in which the 3D printing head and the frame plate 6 are shown in cross-sectional view taken along a horizontal vertical center plane;

fig. 4 is a partial schematic view of the 3D printing apparatus cut away from a vertical plane behind the bull gear 14;

FIG. 5 is a side view of the bull gear 14, the windbox 11 and related structures;

FIG. 6 is a schematic view of the internal structure of the wind-collecting box 11;

fig. 7 is a plan view of the head mounting block 2 and the second hydraulic cylinder 4.

Reference numerals: 1. a main body; 2. a nozzle mounting block; 3. a support plate; 4. a second hydraulic cylinder; 5. a limiting block; 6. a frame plate; 7. a motor; 8. a driving gear; 9. a first hydraulic cylinder; 10. a rack; 11. an air collection box; 12. a pinion gear; 13. fixing the gear ring; 14. a bull gear; 15. printing a spray head; 16. carrying a plate; 17. a lifting plate; 18. a first bearing; 19. rotating the cylinder; 20. a thin rotating shaft; 21. a thick rotating shaft; 22. a bump; 23. a drive button; 24. an air inlet; 25. a second bearing; 26. a fixing plate; 27. an air exhaust hose; 28. an electric heating element; 29. a fan; 30. an exhaust branch pipe; 31. an electromagnetic valve; 32. a blowing nozzle; 33. a treatment liquid spray head; 34. a drain hose; 35. a guide ring body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, the 3D printing nozzle with surface treatment includes a printing nozzle 15, the printing nozzle 15 is installed on a bottom surface of a lifting plate 17 horizontally disposed, and a nozzle driving mechanism for driving the printing nozzle 15 to move is provided on the bottom surface of the lifting plate 17 (the nozzle driving mechanism for driving the printing nozzle 15 to move is a mature technical structure in the prior art, and is not described herein, and is not specifically shown in the drawings), the lifting plate 17 is a circular plate, and a vertically disposed rotating cylinder 19 is sleeved on an outer side of the lifting plate 17, as shown in fig. 2, the rotating cylinder 19 is connected to the lifting plate 17 through a first bearing 18, at least one nozzle installation block 2 (only one nozzle installation block 2 is shown in the drawing) is installed at a lower end of the rotating cylinder 19 at equal interval along a peripheral side thereof, an outlet end of the nozzle installation block 2 faces a side of a central axis of the lifting plate 17, as shown in fig. 7, a treatment liquid nozzle 33 is installed on the nozzle installation block 2, an input end of the treatment liquid nozzle 33 is connected to a flexible pipe 34, and a liquid discharge solenoid valve 31 is provided on the flexible pipe 34; the upper end of the inner side face of the rotary cylinder 19 is fixed with a fixed gear ring 13 which is horizontally arranged, one side of the upper end face of the lifting plate 17 is fixed with a vertically arranged motor 7, a driving gear 8 which is meshed with the fixed gear ring 13 is fixedly sleeved on an output shaft of the motor 7, and the top face of the lifting plate 17 is connected with a vertically arranged first hydraulic cylinder 9.

In this embodiment, as shown in fig. 1, the connection end of the nozzle mounting block 2 is connected to a second hydraulic cylinder 4 horizontally arranged, and the bottom of the second hydraulic cylinder 4 is connected to a support plate 3 fixedly connected to the rotary cylinder 19. Can drive shower nozzle installation piece 2 through second pneumatic cylinder 4 and move on the horizontal direction, make its printing product that can be better be adapted to different width.

In this embodiment, as shown in fig. 1, fixedly connected with stopper 5 between backup pad 3 and the rotation barrel 19, just the through-hole that supplies second pneumatic cylinder 4 to pass is worn to be equipped with by stopper 5 improved level, one side of stopper 5 dorsad second pneumatic cylinder 4 is located to shower nozzle installation piece 2. The limiting block 5 with the through hole can limit the installation position of the second hydraulic cylinder 4, and prevents the spray head installation block 2 from deviating.

In this embodiment, as shown in fig. 7, a blowing nozzle 32 is installed on the nozzle mounting block 2 on one side of the processing liquid nozzle 33, an exhaust branch pipe 30 is connected to an input end of the blowing nozzle 32, and an electromagnetic valve 31 is provided on the exhaust branch pipe 30. The blowing nozzle 32 is provided to blow the printing product to which the treatment liquid is attached, so as to promote the treatment liquid to be solidified and the printing product to be integrated.

In this embodiment, as shown in fig. 2, a horizontally disposed guide ring body 35 is fixed on the periphery of the lifting plate 17, the guide ring body 35 is embedded in the rotating cylinder 19, and an annular groove for the guide ring body 35 to be embedded and rotate is opened on the inner side wall of the rotating cylinder 19. The insertion connection of the lifting plate 17 and the rotating cylinder 19 is realized through the guide ring body 35 and the annular groove, so that the lifting plate 17 can ensure that the rotating cylinder 19 is synchronously driven to perform lifting movement in the lifting movement process, and the rotation of the lifting plate 17 relative to the rotating cylinder 19 is not influenced.

As shown in fig. 3, the 3D printing apparatus applied to the 3D printing head with surface treatment includes a main body 1 having a bearing plate 16 on an upper end surface thereof, and a frame plate 6 is connected to an upper end of the main body 1, and is characterized in that the frame plate 6 is provided with the 3D printing head with surface treatment located right above the bearing plate 16, the first hydraulic cylinder 9 is mounted on a top of the frame plate 6, the upper end surface of the lifting plate 17 is fixed with a vertically arranged rack 10, a top plate portion of the frame plate 6 is provided with two through holes for respectively passing through an output end of the first hydraulic cylinder 9 and the rack 10, one side of the rack 10 is provided with a large gear 14 in an engagement manner, as shown in fig. 4 and 5, a thick rotating shaft 21 is fixedly arranged on an axis of the large gear 14 in a penetration manner, two ends of the thick rotating shaft 21 are respectively connected with a fixing plate 26 fixedly connected to a top plate portion of the frame plate 6 through bearings, a lower end surface of the top plate 6 is provided with a driving button 23 for controlling the motors 7 and 31 to be electrically opened, and at least one driving button 22 for triggering the driving button 23 is fixed along a periphery of the thick rotating shaft 21 aligned with the driving button 23 at equal interval;

as shown in fig. 4 and 5, a pinion 12 is engaged with one side of the large gear 14, which faces away from the rack 10, a thin rotating shaft 20 is fixedly arranged on an axis of the pinion 12 in a penetrating manner, one end of the thin rotating shaft 20 is connected with an air collecting box 11 fixedly connected with a top plate part of the frame plate 6, as shown in fig. 6, a fan 29 is fixedly sleeved in the air collecting box 11 and extends to the corresponding end of the thin rotating shaft 20, a second bearing 25 is arranged at a position on the air collecting box 11, through which the thin rotating shaft 20 passes, one end of the thin rotating shaft 20, which faces away from the air collecting box 11, is fixedly connected with the frame plate 6 through another second bearing 25, an air inlet 24 is formed in a panel of the air collecting box 11, which is located in front of the fan 29, an air discharging hose 27 is connected to the panel of the air collecting box 11, which is located behind the fan 29, an output end of the air discharging hose 27 is communicated with an input end of the air discharging branch pipe 30, and a check valve (not shown in the figure) is arranged on the air discharging hose 27. After the air collecting box 11 and the related structure are arranged, the rotation of the large gear 14 can drive the small gear 12 to rotate, and the setting of the transmission ratio of the large gear 14 and the small gear 12 is matched, so that the rotation speed of the small gear 12 is greater than that of the large gear 14, the thin rotating shaft 20 rotates along with the small gear 12 to drive the fan 29 to rotate, air can be sucked into the air collecting box 11 through the air inlet 24 and is sent into the exhaust branch pipe 30 through the exhaust hose 27, after the electromagnetic valve 31 on the exhaust branch pipe 30 is opened, the printed product sprayed with the treatment liquid can be blown through the blowing nozzle 32, and the solidification of the treatment liquid and the printed product can be promoted to be integrated.

Example 2

The present embodiment is different from embodiment 1 in that:

for the 3D printing nozzle with surface treatment, in this embodiment, the motor 7 is a forward and backward rotation motor, as shown in fig. 7, the cross section of the nozzle mounting block 2 is arc-shaped, and two blowing nozzles 32 respectively located at two sides of the treatment liquid nozzle 33 are mounted on the nozzle mounting block 2. The rotating cylinder 19 can be driven by the positive and negative rotation motor to rotate positively and then reversely to reset, and the nozzle mounting block 2 rotates along with the rotation, so that the liquid discharge hose 34 and the exhaust branch pipe 30 can be effectively prevented from being wound on other mechanisms; the treatment liquid spray nozzle 33 can move back and forth along with the spray nozzle mounting block 2, so that the air blowing spray nozzles 32 are arranged on the two sides of the treatment liquid spray nozzle 33, and in the one-way movement process of the treatment liquid spray nozzle 33, one air blowing spray nozzle 32 can blow the treatment liquid which is just sprayed behind the treatment liquid spray nozzle 33, namely, the effect of promoting the solidification of the treatment liquid can be guaranteed.

With respect to the 3D printing apparatus to which the above-described surface-treated 3D printing head is applied, in the present embodiment, as shown in fig. 6, the air collection box 11 is internally mounted with the electrothermal member 28 between the fan 29 and the air exhaust hose 27. When the device is used, the electric heating element 28 is electrified, the electric heating element 28 converts electric energy into heat energy, the air entering the air collecting box 11 can be heated, hot air is formed in the air collecting box 11, and the hot air is blown to the printed product sprayed with the treatment liquid through the air exhaust hose 27 and the air exhaust branch pipe 30, so that the treatment liquid can be further solidified.

Otherwise, the same procedure as in example 1 was repeated.

The specific action principle of the 3D printing nozzle with the surface treatment and the equipment is as follows:

after the liquid discharge hose 34 is connected with the treatment liquid storage tank, the first hydraulic cylinder 9 and the nozzle driving mechanism are started firstly, the driving button 23 is powered on after the printing nozzle 15 starts to ascend, the first hydraulic cylinder 9 drives the lifting plate 17, the nozzle driving mechanism and the printing nozzle 15 to gradually ascend along with the progress of printing products by the printing nozzle 15, the rack 10 ascends along with the ascending to drive the large gear 14 to rotate, and the coarse rotating shaft 21 rotates along with the large gear to drive the lug 22 to rotate; meanwhile, the large gear 14 drives the small gear 12 to rotate, the thin rotating shaft 20 rotates along with the small gear, the fan 29 is driven to rotate, air is sucked into the air collecting box 11 through the air inlet 24, the electric heating piece 28 is arranged to heat the air, and then the air is sent into the exhaust branch pipe 30 through the exhaust hose 27;

when the printed product is printed to a certain height, namely the rack 10 rises to a certain height, the bump 22 rotates to abut against the driving button 23, the motor 7 is started, the electromagnetic valve 31 is opened, the motor 7 drives the driving gear 8 to rotate, then the fixed gear ring 13 is driven to rotate, the rotating cylinder 19 rotates along with the driving gear ring, the spray head mounting block 2 is driven to rotate around the part of the printed product, and in the process, because the electromagnetic valve 31 is opened, the treatment liquid is sprayed on the printed product through the treatment liquid spray head 33, and then the treatment liquid can be sprayed on the peripheral side of the printed product. Due to the surface tension principle of the processing liquid, fine concave-convex parts of the printed product are covered by the sprayed concentrated liquid, namely a layer of smooth clothes is worn on the surface of the printed product, and the air in the exhaust branch pipe 30 is blown to the printed product through the blowing nozzle 32, so that the processing liquid sprayed on the printed product can be blown to promote the curing of the processing liquid; when the motor 7 and the electromagnetic valve 31 are started, the starting time of the motor 7 and the electromagnetic valve 31 is controlled by the timer and is paused in time to be started next time, the bump 22 continues to rotate after abutting against the driving button 23, the started motor 7 and the started electromagnetic valve 31 are paused for one time before the bump 22 abuts against the driving button 23 again, when the bump 22 abuts against the driving button 23 again, the motor 7 and the electromagnetic valve 31 are restarted, and the steps are repeated in such a way, so that once a product with a certain height is printed, the spraying of the treatment liquid is carried out on the printed product with the height, the production process of the layer-by-layer printing forming of the 3D printed product is met, the complete spraying of the appearance of the printed product can be ensured, in the process of spraying the treatment liquid, the printing operation of the printing nozzle 15 at the current height position can not be paused, the printing efficiency can be improved, and the 3D printed product with a smooth appearance can be finally obtained.

From the above, the invention has better surface treatment function and better adaptability; the appearance of a printed product can be completely treated, and the printing efficiency can be improved; and the cost can be saved, and the operation and the control are convenient.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments may fall within the scope of the appended claims within the spirit of the present invention.

Claims

1. A3D printing device with surface treatment comprises a main machine body (1) and a printing spray head (15), wherein a bearing plate (16) is arranged on the upper end face of the main machine body (1), a frame plate (6) is connected to the upper end of the main machine body (1), characterized in that the frame plate (6) is provided with the 3D printing spray head with surface treatment which is positioned right above the bearing plate (16), the first hydraulic cylinder (9) is arranged at the top of the frame plate (6), a vertically arranged rack (10) is fixed on the upper end surface of the lifting plate (17), the top plate part of the frame plate (6) is provided with two through openings for the output end of the first hydraulic cylinder (9) and the rack (10) to pass through respectively, one side of the rack (10) is provided with a gearwheel (14) in a meshing manner, the axis of the gearwheel (14) is fixedly provided with a thick rotating shaft (21) in a penetrating manner, two ends of the thick rotating shaft (21) are respectively connected with a fixed plate (26) fixedly connected with the top plate part of the frame plate (6) through bearings, a driving button (23) for controlling the motor (7) and the electromagnetic valve (31) to be electrified and opened is arranged on the lower end surface of the top plate part of the frame plate (6), at least one lug (22) for triggering the driving button (23) is fixed on the thick rotating shaft (21) at the position aligned with the driving button (23) along the peripheral side of the thick rotating shaft at equal intervals;

the printing nozzle (15) is installed on the bottom surface of a lifting plate (17) which is horizontally arranged, a nozzle driving mechanism used for driving the printing nozzle (15) to move is arranged on the bottom surface of the lifting plate (17), the lifting plate (17) is a circular plate, a vertically-arranged rotating cylinder (19) is sleeved on the outer side of the lifting plate (17), the rotating cylinder (19) is connected with the lifting plate (17) through a first bearing (18), at least one nozzle installation block (2) is installed on the lower end of the rotating cylinder (19) at equal intervals along the peripheral side of the rotating cylinder, the outlet end of the nozzle installation block (2) faces the side where the central axis of the lifting plate (17) is located, a treatment liquid nozzle (33) is installed on the nozzle installation block (2), the input end of the treatment liquid nozzle (33) is connected with a liquid discharge hose (34), and an electromagnetic valve (31) is arranged on the liquid discharge hose (34); a horizontally arranged fixed gear ring (13) is fixed at the upper end of the inner side surface of the rotating cylinder body (19), a vertically arranged motor (7) is fixed on one side of the upper end surface of the lifting plate (17), a driving gear (8) meshed with the fixed gear ring (13) is fixedly sleeved on an output shaft of the motor (7), and the top surface of the lifting plate (17) is connected with a vertically arranged first hydraulic cylinder (9);

one side joggled type of gear wheel (14) rack (10) dorsad is equipped with a pinion (12), the fixed through type is equipped with a thin pivot (20) on the axis of pinion (12), the one end of thin pivot (20) is connected with and frame plate (6) roof part fixed connection's collection bellows (11), the corresponding end of thin pivot (20) extends to collection bellows (11) inside and fixed cover is equipped with fan (29), the position department that supplies thin pivot (20) to pass on collection bellows (11) is equipped with second bearing (25), the one end of thin pivot (20) collection bellows (11) dorsad is connected with exhaust hose (27) through another second bearing (25) and frame plate (6) fixed connection, collection bellows (11) are located and have seted up one air intake (24) on the panel in fan (29) the place ahead, collection bellows (11) are located and are connected with exhaust hose (27) on the panel in fan (29) rear, exhaust hose (27)'s output and the input intercommunication of branch pipe (30) of airing exhaust, collection bellows (11) internally mounted has the piece (28) that is located between fan (29) and air bellows (29).

2. 3D printing equipment with surface treatment according to claim 1, characterized in that the connection end of the nozzle mounting block (2) is connected with a second hydraulic cylinder (4) which is horizontally arranged, and the bottom of the second hydraulic cylinder (4) is connected with a support plate (3) which is fixedly connected with the rotary cylinder (19).

3. The 3D printing equipment with the surface treatment function according to claim 2, wherein a limiting block (5) is fixedly connected between the supporting plate (3) and the rotating cylinder (19), a through hole for the second hydraulic cylinder (4) to pass through is horizontally formed in the limiting block (5), and the nozzle mounting block (2) is arranged on one side, back to the second hydraulic cylinder (4), of the limiting block (5).

4. The 3D printing device with the surface treatment function according to claim 1, wherein a blowing nozzle (32) located on one side of the treatment liquid nozzle (33) is mounted on the nozzle mounting block (2), an exhaust branch pipe (30) is connected to an input end of the blowing nozzle (32), and an electromagnetic valve (31) is arranged on the exhaust branch pipe (30).

5. The 3D printing equipment with the surface treatment function according to claim 4, wherein the motor (7) is a forward and reverse motor, the cross section of the spray head mounting block (2) is arc-shaped, and two air blowing spray heads (32) respectively positioned at two sides of the treatment liquid spray head (33) are mounted on the spray head mounting block (2).

6. The 3D printing equipment with the surface treatment function according to any one of claims 1 to 5, wherein a horizontally arranged guide ring body (35) is fixed on the periphery of the lifting plate (17), the guide ring body (35) is embedded in the rotating cylinder (19), and an annular groove for the guide ring body (35) to be embedded and rotate is formed in the inner side wall of the rotating cylinder (19).