CN216680220U

CN216680220U - Powder device is spread with shaping to 3D laser

Info

Publication number: CN216680220U
Application number: CN202122342065.2U
Authority: CN
Inventors: 王林浩
Original assignee: Qingdao Zhongke Ruihang Aviation Technology Co ltd
Current assignee: Qingdao Zhongke Ruihang Aviation Technology Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-06-07
Anticipated expiration: 2031-09-27

Abstract

The utility model provides a forming powder laying device for 3D laser, which comprises a forming bin and a supporting plate, wherein the supporting plate is fixedly arranged around the edge of an opening at the top of the forming bin; a powder scraping structure is arranged above the supporting plate, and the powder scraping structure is driven by a driving structure to move along the length direction of the supporting plate and approach a forming bin; the powder scraping structure comprises a bearing box, a temporary storage groove is formed in the middle of the bearing box in a downward concave mode, a first material blocking plate and a second material blocking plate are respectively erected on two sides of an open opening and at the bottom of the temporary storage groove, and the first material blocking plate and the second material blocking plate are driven by a driving motor to achieve opposite approaching swing or opposite swinging; the outer side of the wall of the temporary storage groove is respectively provided with a first cutter groove and a second cutter groove which are used for installing scrapers, the first cutter groove is driven by a first cylinder to lift, and the second cutter groove is driven by a second cylinder to lift; its novel structure has the effect of two-way brush of scraping and shop's powder, and one-way shop's powder can not receive the influence of another direction scraper, improves shop's powder effect, guarantees product quality.

Description

Powder device is spread with shaping to 3D laser

Technical Field

The utility model relates to the field of laser printing accessories, in particular to a forming and powder laying device for a 3D laser.

Background

As 3D printing technology continues to evolve, metal part 3D printing technology begins to receive increasing attention as the leading and most potential technology in the overall 3D printing system. Aiming at the problems of high mold cost, low material utilization rate, long production period and the like of parts with complex shapes formed by the traditional processing technology, a Selective Laser Melting (SLM) technology becomes the main future development direction of rapid forming. Compared with the traditional processing technology, the technology has many advantages, mainly embodies in that the metal parts can be directly formed, complex steps such as die opening and the like are omitted, the production period of the product is greatly shortened, and the speed of putting the product on the market is accelerated.

Common SLM (selective laser melting) equipment is divided into a unidirectional powder paving mode and a bidirectional powder paving mode according to the powder paving mode, wherein the unidirectional powder paving mode can only pave powder in a single direction from left to right or from right to left, and the unidirectional powder paving mode cannot avoid the phenomenon of reverse scraper growth caused by the fact that small-angle growth of parts is opposite to the powder paving direction; the powder spreading in one direction of the bidirectional powder spreading scraper can be influenced by the scraper in the other direction to the powder bed, so that the part product is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a forming powder spreading device for 3D laser, which is novel in structure and has the effect of bidirectional scraping and brushing powder spreading, and unidirectional powder spreading is not influenced by a scraper in the other direction, so that the powder spreading effect is improved, and the product quality is ensured.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a forming powder laying device for 3D laser, which comprises a forming bin and a supporting plate, wherein the supporting plate is fixedly arranged around the edge of an opening at the top of the forming bin; a powder scraping structure is arranged above the supporting plate, a driving structure is arranged on the top surface of the supporting plate, and the driving structure drives the powder scraping structure to move along the length direction of the supporting plate and enables the powder scraping structure to approach the top opening of the forming bin; the powder scraping structure comprises a bearing box, a temporary storage groove is formed in the middle of the bearing box in a downward recessed mode, a first material blocking plate and a second material blocking plate are erected on two sides of an open opening and at the bottom of the temporary storage groove respectively, the first material blocking plate and the second material blocking plate are driven by a driving motor to achieve opposite approaching swing or opposite swinging, and the bottom of the temporary storage groove can be correspondingly blocked or opened; the outer sides of the groove walls of the temporary storage groove are respectively provided with a first cutter groove and a second cutter groove which are used for installing scrapers, the first cutter groove is driven by a first cylinder to lift, and the second cutter groove is driven by a second cylinder to lift.

In a preferred technical scheme of the utility model, the bearing box comprises two oppositely arranged supporting plates, two frame plates are fixedly arranged between the tops of the two supporting plates, vertical plates are vertically and fixedly arranged at the bottom of one side of each frame plate close to the center of the bearing box, and the temporary storage groove is formed between the two vertical plates; the first material baffle plate and the second material baffle plate are respectively arranged below the two vertical plates; the first knife groove and the second knife groove are respectively arranged on one side of the vertical plate far away from the temporary storage groove; the first cylinder and the second cylinder are respectively fixed on the corresponding supporting plates.

In a preferred technical scheme of the utility model, the first striker plate comprises a plate body, a rotating shaft is fixedly arranged at one long edge of the plate body, two ends of the rotating shaft protrude out of two ends of the plate body, and two ends of the rotating shaft are rotatably arranged on the two supporting plates through bearings; two ends of the rotating shaft are in transmission connection with an output shaft of a driving motor through a gear set, and the driving motor is fixedly arranged on the bearing box; the bottom surface of the vertical plate is provided with a groove corresponding to the rotating shaft, and the bottom of the groove is in an arc concave shape matched with the rotating shaft; the structure of the second striker plate is the same as that of the first striker plate.

In a preferred technical scheme of the utility model, the groove wall of the first cutter groove is provided with a plurality of threaded holes, the threaded holes are distributed in a linear array along the length direction of the first cutter groove, the structure of the second cutter groove is the same as that of the first cutter groove, and the scraper can be fixed at the first cutter groove and the second cutter groove through screws.

In a preferred technical scheme of the utility model, the end part of the piston rod of the first cylinder is connected with the top of the first cutter groove, and the end part of the piston rod of the second cylinder is connected with the top of the second cutter groove through pressure springs.

In a preferred technical scheme of the utility model, two ends of the first cutter groove and the second cutter groove are propped against the inner walls of the two supporting plates to slide.

In a preferred technical scheme of the utility model, two charging chutes are arranged on the supporting plate, the two charging chutes are respectively positioned at two ends of the supporting plate, the extension direction of the charging chutes is consistent with that of the bearing box, and the length of the charging chutes is greater than that of the first cutter groove.

The utility model has the beneficial effects that:

the forming powder spreading device for the 3D laser is novel in structure, and a temporary storage groove, a first material baffle plate, a second material baffle plate, a driving motor, a scraper, a first cutter groove, a second cutter groove, a first air cylinder and a second air cylinder are arranged on a powder scraping structure; the first material baffle and the second material baffle are driven by the driving motor to realize opposite approaching swing or opposite swinging, and the bottom of the temporary storage groove can be correspondingly blocked or opened, so that the fixed-point feeding effect is realized, and the subsequent powder spreading is facilitated; the first cutter groove is driven by the first air cylinder to lift, the second cutter groove is driven by the second air cylinder to lift, the corresponding scraper descends to be capable of scraping and brushing powder according to the actual powder paving requirement, the other scraper is in an overhead state, and the initial powder scraping effect cannot be influenced in the process of moving the powder scraping structure; holistic cooperation makes it have two-way brush of scraping and spreads the effect of powder, and one-way shop powder can not receive the influence of another direction scraper, improves and spreads the powder effect, guarantees product quality.

Drawings

Fig. 1 is a schematic perspective view of a 3D laser molding powder-spreading device in a use state according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a powder scraping structure provided in an embodiment of the present invention;

FIG. 3 is a close-up cross-sectional view of a doctor blade configuration provided in an embodiment of the utility model;

fig. 4 is a sectional view of the powder scraping structure provided in the embodiment of the present invention in an opened state.

In the figure:

100. a molding bin; 110. a pallet; 120. a charging chute; 200. a powder scraping structure; 210. a support box; 211. a support plate; 212. a frame plate; 213. a vertical plate; 214. a groove; 220. a temporary storage tank; 230. a first striker plate; 231. a plate body; 232. a rotating shaft; 240. a second retainer plate; 250. a drive motor; 260. a scraper; 270. a first knife slot; 271. a threaded hole; 280. a second knife slot; 290. a spring; 300. a drive structure; 410. a first cylinder; 420. a second cylinder; 500. and a powder falling bin.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 4, the embodiment of the present invention discloses a forming powder-spreading device for 3D laser, which includes a forming bin 100, a supporting plate 110 fixedly disposed around the top opening edge of the forming bin 100; the powder scraping structure 200 is arranged above the supporting plate 110, the driving structure 300 is arranged on the top surface of the supporting plate 110, and the driving structure 300 drives the powder scraping structure 200 to move along the length direction of the supporting plate 110 and enables the powder scraping structure 200 to pass through the top opening of the forming bin 100; the powder scraping structure 200 comprises a bearing box 210, a temporary storage groove 220 is formed in the middle of the bearing box 210 in a downward concave mode, a first material baffle 230 and a second material baffle 240 are erected on two sides of an open and open bottom of the temporary storage groove 220 respectively, the first material baffle 230 and the second material baffle 240 are driven by a driving motor 250 to achieve opposite approaching swing or mutual deviating swing, and the bottom of the temporary storage groove 220 can be correspondingly blocked or opened; the outer side of the temporary storage slot 220 is provided with a first knife slot 270 and a second knife slot 280 for installing the scraper 260, the first knife slot 270 is driven by a first cylinder 410 to lift, and the second knife slot 280 is driven by a second cylinder 420 to lift.

The forming powder spreading device for the 3D laser is novel in structure, and a temporary storage groove, a first material baffle plate, a second material baffle plate, a driving motor, a scraper, a first cutter groove, a second cutter groove, a first air cylinder and a second air cylinder are arranged on the powder scraping structure; the first material baffle and the second material baffle are driven by the driving motor to realize opposite approaching swing or opposite swinging, and the bottom of the temporary storage groove can be correspondingly blocked or opened, so that the fixed-point feeding effect is realized, and the subsequent powder spreading is facilitated; the first cutter groove is driven by the first air cylinder to lift, the second cutter groove is driven by the second air cylinder to lift, the corresponding scraper descends to be capable of scraping and brushing powder according to the actual powder paving requirement, the other scraper is in an overhead state, and the initial powder scraping effect cannot be influenced in the process of moving the powder scraping structure; holistic cooperation makes it have the effect that the brush was spread to two-way scraping, and one-way shop's powder can not receive the influence of another direction scraper, improves and spreads the powder effect, guarantees product quality.

Further, the support box 210 comprises two support plates 211 arranged oppositely, two frame plates 212 are fixedly arranged between the tops of the two support plates 211, vertical plates 213 are vertically and fixedly arranged at the bottom of one side of the frame plates 212 close to the center of the support box 210, and the temporary storage groove 220 is formed between the two vertical plates 213; the first striker plate 230 and the second striker plate 240 are respectively disposed below the two vertical plates 213; the first knife groove 270 and the second knife groove 280 are respectively arranged on one side of the vertical plate 213 far away from the temporary storage groove 220; the first cylinder 410 and the second cylinder 420 are respectively fixed on the corresponding support plates 211; this structural design can make the structure of bearing box more compact, can make things convenient for the installation in first sword groove and second sword groove, and first striker plate and second striker plate also can carry out smooth swing, do not influence the normal work of scraper.

Further, the first striker plate 230 includes a plate 231, a rotating shaft 232 is fixedly disposed at a long edge of the plate 231, two ends of the rotating shaft 232 protrude from two ends of the plate 231, and two ends of the rotating shaft 232 are rotatably mounted on the two supporting plates 211 through bearings; two ends of the rotating shaft 232 are in transmission connection with an output shaft of a driving motor 250 through a gear set, and the driving motor 250 is fixedly arranged on the bearing box 210; the bottom surface of the vertical plate 213 is provided with a groove 214 corresponding to the rotating shaft 232, and the bottom of the groove 214 is in an arc concave shape matched with the rotating shaft 232; the structure of the second striker plate 240 is the same as that of the first striker plate 230; the first material baffle and the second material baffle are driven to swing synchronously through the driving motor, so that the material feeding and the blocking are convenient.

Further, the groove wall of the first knife groove 270 is provided with a plurality of threaded holes 271, the threaded holes 271 are distributed in a linear array along the length direction of the first knife groove 270, the structure of the second knife groove 280 is the same as that of the first knife groove 270, and the scraper 260 can be fixed at the positions of the first knife groove 270 and the second knife groove 280 through screws, so that the scraper can be conveniently detached.

Further, the end of the piston rod of the first cylinder 410 is connected with the top of the first knife slot 270, and the end of the piston rod of the second cylinder 420 is connected with the top of the second knife slot 280 through the pressure spring 290; this structural design can prevent that the scraper from carrying out rigid collision that lasts in the in-process that descends in the layer board, and first cylinder and second cylinder drive the scraper and move down the default distance, through compression spring for the scraper supports the top surface of holding the layer board, but does not influence normal removal, thereby realizes higher quality and scrapes the brush and spread the powder.

Furthermore, the two ends of the first knife groove 270 and the second knife groove 280 are supported against the inner walls of the two support plates 211 to slide; and, the quantity of first cylinder is 2, and the quantity of second cylinder is 2, can inject the lift removal in first sword groove and second sword groove, makes its steady movement, conveniently counterpoints and scrapes the brush.

Furthermore, two charging chutes 120 are arranged on the supporting plate 110, the two charging chutes 120 are respectively located at two ends of the supporting plate 110, the extending direction of the charging chutes 120 is the same as the extending direction of the support box 210, and the length of the charging chutes 120 is greater than that of the first knife slot 270; can be convenient for the redundant powder to drop and send out.

Furthermore, the driving structure is a screw rod structure or a linear sliding table structure and is provided with a movable sliding block, and one end of the bearing box is fixedly connected with the sliding block.

More specifically, in actual use, the powder dropping bin 500 needs to be used in cooperation; moreover, the method can be divided into three cases according to the requirements of processed products; firstly, equipment needs to be used for scraping and spreading powder from right to left in a one-way mode for a long time, a scraper is arranged in a first cutter groove, a scraper is not arranged in a second cutter groove, and the second cutter groove is in an overhead state under the action of a pressure spring, so that the second cutter groove does not participate in the whole scraping and powder spreading action, and the influence of the second cutter groove on initial powder spreading is avoided; secondly, the equipment is required to be used for one-way scraping and brushing powder spreading from left to right for a long time, a scraper is arranged in the second cutter groove, the first cutter groove is not provided with the scraper, and the first cutter groove is in an overhead state under the action of a pressure spring, so that the first cutter groove does not participate in the whole scraping and brushing powder spreading action, and the influence of the first cutter groove on initial powder spreading is avoided; thirdly, bidirectional scraping and brushing actions are required, scrapers are arranged in the first cutter groove and the second cutter groove, and the scraping and brushing powder spreading in one direction can be realized by coordinating the actions of the first air cylinder and the second air cylinder, so that the powder spreading condition cannot be influenced by the scraper in the other direction, and the overall coordination and stable powder spreading and printing are ensured; it should be noted that the powder drops and needs the cooperation of driving motor, first striker plate, second striker plate, and the groove of keeping in accepts the powder in blanking storehouse department after, scrapes the powder structure and removes to preset position along with drive structure, and driving motor drives first striker plate and second striker plate and rotates to realize opening of the bottom of the groove of keeping in, realize the unloading.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a powder device is spread with shaping to 3D laser which characterized in that:

comprises a molding bin and a supporting plate fixedly arranged around the edge of an opening at the top of the molding bin; a powder scraping structure is arranged above the supporting plate, a driving structure is arranged on the top surface of the supporting plate, and the driving structure drives the powder scraping structure to move along the length direction of the supporting plate and enables the powder scraping structure to approach the top opening of the forming bin;

the powder scraping structure comprises a bearing box, a temporary storage groove is formed in the middle of the bearing box in a downward recessed mode, a first material blocking plate and a second material blocking plate are erected on two sides of an open opening and at the bottom of the temporary storage groove respectively, the first material blocking plate and the second material blocking plate are driven by a driving motor to achieve opposite approaching swing or opposite swinging, and the bottom of the temporary storage groove can be correspondingly blocked or opened;

the outer sides of the groove walls of the temporary storage groove are respectively provided with a first cutter groove and a second cutter groove which are used for installing scrapers, the first cutter groove is driven by a first cylinder to lift, and the second cutter groove is driven by a second cylinder to lift.

2. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

the bearing box comprises two oppositely arranged supporting plates, two frame plates are fixedly arranged between the tops of the two supporting plates, vertical plates are vertically and fixedly arranged at the bottom of one side of each frame plate close to the center of the bearing box, and the temporary storage groove is formed between the two vertical plates; the first material baffle plate and the second material baffle plate are respectively arranged below the two vertical plates; the first knife groove and the second knife groove are respectively arranged on one side of the vertical plate far away from the temporary storage groove; the first cylinder and the second cylinder are respectively fixed on the corresponding supporting plates.

3. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

the first striker plate comprises a plate body, a rotating shaft is fixedly arranged at one long edge of the plate body, two ends of the rotating shaft protrude out of two ends of the plate body, and two ends of the rotating shaft are rotatably erected on the two supporting plates through bearings; two ends of the rotating shaft are in transmission connection with an output shaft of a driving motor through a gear set, and the driving motor is fixedly arranged on the bearing box; the bottom surface of the vertical plate is provided with a groove corresponding to the rotating shaft, and the bottom of the groove is in an arc concave shape matched with the rotating shaft; the structure of the second striker plate is the same as that of the first striker plate.

4. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

the wall of the first knife groove is provided with a plurality of threaded holes, the threaded holes are distributed along the length direction of the first knife groove in a linear array mode, the structure of the second knife groove is the same as that of the first knife groove, and the scraper can be fixed to the positions of the first knife groove and the second knife groove through screws.

5. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

the end part of the piston rod of the first cylinder is connected with the top of the first knife groove, and the end part of the piston rod of the second cylinder is connected with the top of the second knife groove through pressure springs.

6. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

the two ends of the first cutter groove and the second cutter groove are propped against the inner walls of the two supporting plates to slide.

7. The forming and powder-spreading device for the 3D laser according to claim 1, wherein:

be equipped with two charging chutes on the layer board, two charging chutes are located the both ends of layer board respectively, and the extending direction of charging chute is unanimous with the extending direction of bearing box, and the length of charging chute is greater than the length in first sword groove.