CN215235781U

CN215235781U - 3D prints cement material preprocessing device

Info

Publication number: CN215235781U
Application number: CN202121387227.8U
Authority: CN
Inventors: 李敏; 孙春景; 杜晓方
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-21
Anticipated expiration: 2031-06-22

Abstract

The utility model relates to a 3D prints cement material preprocessing device, the utility model discloses effectively solve the problem that the screening efficiency is lower and the effect is not good when current screening to cement raw and other materials; the technical scheme comprises the following steps: the device is carrying out the screening to the sand and simultaneously still can carry out the breakage to the sand piece that hardens together in step to make the screening process of sand more smooth and easy (avoided artifical manual breaking it into pieces), the realization that the device still can be quick moreover is to the change of screen cloth, and easy operation is convenient, has also alleviateed staff's work load when providing work efficiency, but this device practicality is higher extensively promotes.

Description

3D prints cement material preprocessing device

Technical Field

The utility model belongs to the technical field of 3D prints, concretely relates to 3D prints cement material preprocessing device.

Background

3D printing, one of the rapid prototyping technologies, is a technology for constructing an object by using an adhesive material such as powdered metal, plastic, cement-based material, etc. and by printing layer by layer based on a digital model file, which has been used to manufacture models in the fields of mold manufacturing, industrial design, etc. and is being gradually used for direct manufacturing of some products and building construction;

when cement products and house construction are carried out through a 3D printer, printing consumables of the existing cement products and house construction generally need to be pretreated in advance, and cement materials subjected to 3D printing are composite gel materials formed by mixing cement, sand, a water reducing agent and the like;

when 3D printing is carried out on cement materials, the particle size of sand needs to be correspondingly selected according to the size of a nozzle of a 3D printer (the particle sizes of the sand needed by printing different products are different), the condition that a conveying pipe is blocked or the nozzle is blocked due to overlarge material particle size in the printing process to cause printing failure is prevented, the maximum particle size is not larger than one fourth of the pipe diameter according to the requirement of 3D printing concrete cement materials, therefore, the sand particle sizes need to be screened (the sand with different particle sizes is screened out to be used as raw materials of different printing products) in the preparation of the 3D printing cement materials, the conventional sand screening equipment is inconvenient in screen mesh replacement, and when the sand is hardened together due to humidity, the sand cannot be broken and broken (the hardened sand blocks cannot be broken by simple vibration) so that the sand cannot be thoroughly screened, Separation (at the moment, workers are required to manually break the hardened sand block and then screen the sand block again), time and labor are wasted, and the working efficiency is reduced;

in view of the above, we provide a 3D printing cement material pretreatment device for solving the above problems.

SUMMERY OF THE UTILITY MODEL

To the above circumstances, for overcoming prior art's defect, the utility model provides a 3D prints cement material preprocessing device, the device still can be in step broken to the sand piece that hardens together when screening sand to make the screening process of sand more smooth and easy (avoided artifical manual breaking it into pieces), the realization that the device still can be quick moreover is to the change of screen cloth, and easy operation is convenient, has also alleviateed staff's work load when providing work efficiency, but the device practicality is higher extensively promotes.

The pretreatment device for the 3D printing cement material is characterized by comprising an operation frame, wherein a cylinder is rotatably arranged on the operation frame, a screen opening is formed in the bottom of the cylinder, a plurality of screen meshes matched with the screen opening are slidably arranged in the cylinder along the circumferential direction of the cylinder, and a positioning device for positioning the screen meshes is arranged on the cylinder;

be equipped with the device of swaing and sway the device and by motor drive with the drum is connected on the handling frame, rotate on the handling frame and install the break roller and break the roller and be connected with through motor drive's reciprocating device with the axle center setting of drum, break the roller and arrange the drum internal division in and rotate along the radial interval of drum and install a plurality of rotatory rollers and be equipped with the blade on the rotatory roller, it is a plurality of rotatory roller is connected with the drive arrangement who locates on the handling frame.

Preferably, the swinging device comprises a swinging gear frame which is coaxially rotated with the cylinder and is provided with a swinging gear engaged with the swinging gear in a vertical sliding manner, a swinging connecting rod is rotatably arranged at the bottom of the swinging gear frame, a swinging plate is rotatably arranged on the swinging connecting rod, and the swinging plate is rotatably arranged on the operation frame and driven by a motor.

Preferably, reciprocating device includes and has vertical slidable mounting reciprocating rack on the handling frame with breaking coaxial pivoted reciprocating gear and the meshing of reciprocating gear of roller, reciprocating rack rotates the bottom and installs reciprocating connecting rod and the rotation of reciprocating connecting rod other end and install reciprocating plate, reciprocating plate rotates and installs in the handling frame and is connected with the speed governing band pulley group of locating on the handling frame, speed governing band pulley group is through motor drive.

Preferably, a plurality of rotatory roller is arranged in the roller of breaking in one end with the inherent sprocket of axle sleeve and a plurality of sprocket cooperate jointly to have the chain of locating in the roller of breaking, the outer one end of drum is arranged in to the chain is connected with to rotate and installs driven gear and driven gear meshing on breaking the roller and have fixed mounting in the handling frame and with the terminal gear that the axle center set up of breaking the roller.

Preferably, the screen mesh is integrally provided with a deflector rod, the deflector rod extends out of the cylinder wall, the positioning device comprises two U-shaped frames which are arranged at intervals along the circumferential direction of the cylinder and are slidably mounted along the direction vertical to the side wall of the cylinder, and the U-shaped frames are radially arranged along the cylinder and are in threaded fit with screws rotatably mounted on the cylinder wall.

The beneficial effects of the technical scheme are as follows:

(1) the device can simultaneously crush the hardened sand blocks while screening the sand, so that the sand screening process is smoother, the hardened sand blocks are prevented from being manually crushed, the workload of workers is reduced, and the sand screening efficiency is improved;

(2) in this scheme, the device realization that still can be quick is to the change of screen cloth, can realize screening to the sand of different particle size demands to the sand that can obtain multiple different particle sizes is as reserve, and changes process easy operation convenient.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the overall structure of the present invention;

FIG. 3 is a schematic structural view of the positioning device of the present invention;

FIG. 4 is a schematic view of the internal structure of the cylinder with a section view;

FIG. 5 is a schematic sectional view of the rotary roller according to the present invention;

FIG. 6 is a schematic view of the screen mesh and the screen port of the present invention;

fig. 7 is a schematic structural view of the swing device and the reciprocating device of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be described in detail with reference to the accompanying drawings 1 to 7.

Embodiment 1, 3D printing cement material pretreatment device, as shown in fig. 1, comprising an operation frame 1, and a cylinder 2 rotatably mounted on the operation frame 1, wherein a screen port 3 is provided at the bottom of the cylinder 2 (we can set a material discharge port at the top of the cylinder 2 and corresponding to the screen port 3, the material discharge port is symmetrically arranged with the screen port 3, as shown in fig. 2), as shown in fig. 4, a plurality of screen meshes 4 matched with the screen port 3 are slidably mounted in the cylinder 2 along the circumferential direction thereof (the number of the screen meshes 4 can be correspondingly set according to actual requirements, two screen meshes 4 are provided in the present solution for explaining the specific use process of the present solution in combination with the embodiment), the screen meshes on different screen meshes 4 are different from each other, so as to realize screening out sands with different particle sizes, when a plurality of screen meshes 4 are provided, the screen meshes of the screen meshes 4 arranged from inside to outside along the radial direction of the cylinder 2 are set from large to small, furthermore, when screening sand, the screen 4 with the largest screen hole is drawn out from the inner wall of the cylinder 2 and moved to a position corresponding to the screen opening 3 (positioning is achieved by the positioning device), as shown in fig. 4, the screen 4 and the screen are contracted into the inner wall of the cylinder 2, the sand with the largest particle is screened out at this time, after the sand with the required particle size is screened out, the other screen 4 next to the screen is drawn out from the inner wall of the cylinder 2 and moved to a position corresponding to the screen opening 3, the screen 4 used before is contracted to the inner wall of the cylinder 2 again (in this process, the residual sand in the cylinder 2 falls on the second screen 4), then the positioning of the second screen 4 is achieved by the positioning device, the screening of the sand with the second large particle size can be carried out at this time, and the same procedure is carried out in the following steps until the sand with the required particle size is screened out, not described herein too much;

as shown in the attached figure 1, a swing device connected with a cylinder 2 is arranged on an operation frame 1, the swing device is driven by a motor 5 arranged on the operation frame 1 (the motor 5 is connected with an external power supply through a guide way), when the motor 5 is started, the swing device can drive the cylinder 2 to do rapid reciprocating swing movement within a certain angle (the swing angle is preferably 30-60 degrees), so that sand positioned in the cylinder 2 can complete a screening process under the action of a screen 4 (a positioning device can ensure that the screen 4 cannot move during the reciprocating swing movement of the cylinder 2), as shown in the attached figure 4, a breaking roller 6 which is coaxial with the cylinder 2 and is rotatably arranged on the operation frame 1 is arranged on the operation frame 1 (the breaking roller 6 passes through the axis of the cylinder 2 and two ends of the breaking roller extend outwards and are rotatably arranged on the operation frame 1 as shown in the attached figure 2), when the cylinder 2 is driven by the swinging device to do reciprocating swinging movement, the breaking roller 6 synchronously does reciprocating movement in the cylinder 2 under the action of the reciprocating device (the motor 5 is started to synchronously drive the swinging device and the reciprocating device to work), the swinging direction of the swinging device driving the cylinder 2 is set to be opposite to the reciprocating rotation direction of the reciprocating device driving the breaking roller 6 (through the movement trends of the swinging device and the reciprocating device, the blades 8 on the rotating rollers 7 can better break hardened sand blocks together);

preferably, the plurality of rotating rollers 7 are connected with a driving device arranged on the operation frame 1, when the cylinder 2 swings, the driving device synchronously drives the plurality of rotating rollers 7 to rotate, so as to drive the blades 8 to rotate in the cylinder 2, and the hardened sand lumps can be further crushed along with the rotation of the blades 8, so that the crushing effect is better;

note: we can place the case that holds (not shown in the figure) that is used for holding the sand of screening out on handling frame 1 and be located sifting hole 3 below, and every time accomplish the screening back of the sand of a specification particle diameter, change new the case that holds, the screening is deposited the classification of sand.

Embodiment 2, on the basis of embodiment 1, as shown in fig. 1, the swing device includes a swing gear 9 rotating coaxially with the cylinder 2, and a swing rack 10 engaged with the swing gear 9 is vertically slidably installed on the operation frame 1 (only one side wall of the swing rack 10 is provided with a gear system engaged with the swing gear 9), as shown in fig. 2, a swing link 11 is rotatably installed at the bottom of the swing rack 10, a swing plate 12 is rotatably installed on the swing link 11, the swing plate 12 is rotatably installed on the operation frame 1 and is driven by the motor 5, when the motor 5 is started to work, the swing plate 12 is driven to rotate rapidly, and along with the rapid rotation of the swing plate 12, the swing rack 10 is driven to perform rapid reciprocating up-and-down movement vertically along the operation frame 1 through the cooperation of the swing link 11 and the swing rack 10, so as to drive the swing gear 9 rotating coaxially with the cylinder 2 to perform reciprocating forward-and backward movement, finally, the cylinder 2 is driven to swing at a certain speed on the operation frame 1, and then sand screening is completed (the swing angle of the cylinder 2 can be adjusted by setting the diameter of the swing gear 9).

Embodiment 3, on the basis of embodiment 2, as shown in fig. 1, the reciprocating device includes a reciprocating gear 13 coaxially rotating with the breaking roller 6 (the reciprocating gear 13 is fixedly sleeved on one end of the breaking roller 6 extending out of the cylinder 2), and the reciprocating gear 13 is meshed with a reciprocating rack 14 vertically slidably mounted on the operation frame 1 (the reciprocating rack 14 is also provided with a rack system meshed with the reciprocating gear 13 on only one side wall), as shown in fig. 1 and 2, a reciprocating link 15 is rotatably mounted at the bottom of the reciprocating rack 14, and a reciprocating plate 16 is rotatably mounted at the other end of the reciprocating link 15, as shown in fig. 7, the reciprocating plate 16 is rotatably mounted on the operation frame 1 and is connected with a speed-adjusting belt wheel set 17 arranged on the operation frame 1 (the speed-adjusting belt wheel set 17 achieves the effect of increasing the rotating speed of the reciprocating plate 16, that is, the reciprocating rotating speed of the breaking roller 6 in the cylinder 2 is faster than that of the cylinder 2, so as to better achieve the breaking of the hardened sand blocks together, when the motor 5 starts to work, the speed-adjusting belt wheel set 17 synchronously drives the reciprocating plate 16 and the swinging plate 12 to rotate, and as shown in the attached drawing 1, when the motor 5 drives the swinging plate 12 to rotate clockwise as shown in the attached drawing 1, the swinging gear frame 10 can be driven to move downwards (the swinging gear 9 rotates clockwise) through the swinging connecting rod 11, meanwhile, the reciprocating plate 16 also rotates clockwise, at the moment, the reciprocating plate 16 drives the reciprocating gear frame 14 to move upwards (the reciprocating gear 13 rotates anticlockwise) through the reciprocating connecting rod 15 which is rotatably installed with the reciprocating plate, and further, when the motor 5 drives to work, the cylinder 2 and the breaking roller 6 can be driven to rotate in the opposite direction.

Embodiment 4, on the basis of embodiment 3, as shown in fig. 5, one end of the plurality of rotating rollers 7 disposed inside the breaking roller 6 is coaxially sleeved with the inherent sprocket 18, and the plurality of sprockets 18 are cooperatively provided with the chain 19 disposed inside the breaking roller 6, as shown in fig. 2, one end of the chain 19 disposed outside the cylinder 2 is driven by the driven gear 20 rotatably mounted on the breaking roller 6, and the driven gear 20 is engaged with the face gear 21 fixedly mounted on the operation frame 1 and coaxially disposed with the breaking roller 6, when the reciprocating device drives the breaking roller 6 to reciprocally rotate on the operation frame 1, the driven gear 20 is synchronously driven by the cooperation of the driven gear 20 and the face gear 21 to reciprocally rotate in the positive and negative directions on the breaking roller 6, and the driven gear 20 drives the plurality of sprockets 18 to synchronously perform reciprocating positive and negative rotation through the chain 19 connected with the driven gear 20, and further drives the plurality of rotating rollers 7 to perform reciprocating positive and negative rotation, the effect of beating and crushing the hardened sand blocks is realized.

Embodiment 5, on the basis of embodiment 1, as shown in fig. 3, a shift lever 22 is integrally disposed on the screen 4, and the shift lever 22 extends outward from the wall of the cylinder 2 (an arc-shaped slot, not numbered in the figure, is disposed on the side wall of the cylinder 2, and as shown in fig. 6, an arc-shaped hole slot, not numbered in the figure, is disposed in the wall of the cylinder 2 and slidably fits with the screen 4), the positioning device includes two U-shaped frames 23 disposed at intervals along the circumferential direction of the cylinder 2 and slidably mounted along the direction perpendicular to the side wall of the cylinder 2 (the distance between the two cantilevers of the U-shaped frame 23 is exactly the same as the thickness of the shift lever 22, i.e., when the shift lever 22 is disposed between the two cantilevers of the U-shaped frame 23, the two U-shaped frames 23 are disposed along the radial direction of the cylinder 2 and are threadedly fitted with a screw 24 rotatably mounted on the wall of the cylinder 2, as shown in fig. 3, the two U-shaped frames 23 are disposed along the circumferential direction of the cylinder 2, namely, one screen 4 (working screen 4) at the position of the screen opening 3 is positioned, the other screen 4 (standby screen 4) contracted into the wall of the cylinder 2 is positioned, when the screen 4 needs to be moved, the U-shaped frame 23 is driven to move towards the direction far away from the side wall of the cylinder 2 by screwing the screw 24, so that the shift lever 22 is no longer positioned between two cantilevers of the U-shaped frame 23, at the moment, a worker can manually pull the shift lever 22 to move (move the shift lever to a corresponding position), and after the adjustment of the screen 4 is completed, the shift lever 22 is positioned between the two cantilevers of the U-shaped frame 23 by reversely screwing the screw 24, so that the positioning effect on the screen 4 is realized;

the electric connection of the motor 5 controller in the scheme is provided with the microcontroller, and the working personnel control the starting and stopping of the motor 5 through the microcontroller.

The above description is only for the purpose of illustration, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

The 3D printing cement material pretreatment device is characterized by comprising an operation frame (1), wherein a cylinder (2) is rotatably mounted on the operation frame (1), a screen opening (3) is formed in the bottom of the cylinder (2), a plurality of screen meshes (4) matched with the screen opening (3) are slidably mounted in the cylinder (2) along the circumferential direction of the cylinder, and a positioning device for positioning the screen meshes (4) is arranged on the cylinder (2);

be equipped with the device of swaing and sway being connected with drum (2) on handling frame (1) and drive by motor (5), rotate on handling frame (1) and install broken roller (6) and break roller (6) that set up with drum (2) with the axle center and be connected with the reciprocating device through motor (5) driven, broken roller (6) are arranged drum (2) internal portion in and are rotated along drum (2) radial interval and are installed and be equipped with blade (8) on a plurality of rotatory roller (7) and rotatory roller (7), and are a plurality of rotatory roller (7) are connected with the drive arrangement who locates on handling frame (1).
2. The 3D printing cement material pretreatment device according to claim 1, characterized in that the swinging device comprises a swinging gear (9) which rotates coaxially with the cylinder (2), a swinging gear frame (10) which is meshed with the swinging gear (9) is vertically and slidably mounted on the operation frame (1), a swinging connecting rod (11) is rotatably mounted at the bottom of the swinging gear frame (10), a swinging plate (12) is rotatably mounted on the swinging connecting rod (11), and the swinging plate (12) is rotatably mounted on the operation frame (1) and driven by a motor (5).
3. 3D printing cement material preprocessing device according to claim 2, characterized in that the reciprocating device comprises a reciprocating gear (13) rotating coaxially with the breaking roller (6) and the reciprocating gear (13) is engaged with a reciprocating gear frame (14) vertically slidably mounted on the operation frame (1), a reciprocating connecting rod (15) is rotatably mounted at the bottom of the reciprocating gear frame (14) and a reciprocating plate (16) is rotatably mounted at the other end of the reciprocating connecting rod (15), the reciprocating plate (16) is rotatably mounted on the operation frame (1) and is connected with a speed regulating belt wheel set (17) arranged on the operation frame (1), and the speed regulating belt wheel set (17) is driven by the motor (5).
4. The 3D printing cement material pretreatment device according to claim 3, characterized in that a plurality of the rotating rollers (7) are arranged in the breaking roller (6), one end of each rotating roller is matched with the shaft sleeve fixed chain wheel (18) and the chain wheels (18) are matched with a chain (19) arranged in the breaking roller (6), the chain (19) is arranged at the outer end of the cylinder (2) and is connected with a driven gear (20) rotatably arranged on the breaking roller (6), and the driven gear (20) is meshed with a face gear (21) which is fixedly arranged on the operation frame (1) and coaxially arranged with the breaking roller (6).
5. The 3D printing cement material pretreatment device according to claim 1, wherein a deflector rod (22) is integrally arranged on the screen (4), the deflector rod (22) extends out of the wall of the cylinder (2), the positioning device comprises two U-shaped frames (23) which are arranged at intervals along the circumferential direction of the cylinder (2) and slidably mounted along the direction vertical to the side wall of the cylinder (2), the U-shaped frames (23) are arranged along the radial direction of the cylinder (2), and the U-shaped frames are in threaded fit with screws (24) rotatably mounted on the wall of the cylinder (2).