CN220297843U

CN220297843U - Powder device is prevented hiding by knife rest screw mounting hole is scraped in 3D printing

Info

Publication number: CN220297843U
Application number: CN202321372644.4U
Authority: CN
Inventors: 贠梦麟; 王鹄
Original assignee: Xian Bright Laser Technologies Co Ltd
Current assignee: Xian Bright Laser Technologies Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-01-05
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses a powder hiding preventing device for a screw mounting hole of a 3D printing scraper frame, which comprises a scraper frame, a scraper pressing plate, a scraper and a powder hiding preventing component; the side wall of the scraper pressing plate is provided with a plurality of counter bores along the horizontal direction, screws are arranged in the counter bores, and the scraper is clamped on the scraper rest by the scraper pressing plate and the screws; the powder hiding prevention component is arranged in the counter bore or is connected with the counter bore and is used for preventing powder from entering the counter bore. The device fit clearance is little, is difficult for hiding powder, and quick detachable can solve scraper frame screw mounting hole and hide powder and drop to the powder layer that has spread and lead to the part to fuse bad problem to improve the print quality.

Description

Powder device is prevented hiding by knife rest screw mounting hole is scraped in 3D printing

Technical Field

The utility model relates to the technical field of 3D printing, in particular to a powder hiding prevention device for a screw mounting hole of a 3D printing scraper frame.

Background

3D printing (3 DP), a type of rapid prototyping technology, also known as additive manufacturing, is a technology that builds objects by means of layer-by-layer printing, using bondable materials such as powdered metal or plastic, based on digital model files.

In the current 3D printing process, powder is easily accumulated in a scraper frame screw hole under the environments of powder falling and blowing and dust raising, if slight scraping and rubbing occur in the printing process, the powder in the screw hole easily falls onto the surface of a paved powder layer, so that the powder layer in a local area is thickened, the phenomenon of sintering and unfused occurs, and the printed product is defective or even scrapped.

Disclosure of Invention

The utility model provides a powder hiding prevention device for a screw mounting hole of a 3D printing scraper rest, and aims to solve the problem that powder hiding of the screw mounting hole of the scraper rest in the background technology is caused, so that printing quality is affected.

The technical scheme provided by the utility model is as follows:

the utility model provides a powder device is prevented hiding by 3D printing scraper rest screw mounting hole which characterized in that:

comprises a scraper rest, a scraper pressing plate, a scraper and a powder hiding prevention component;

the side wall of the scraper pressing plate is provided with a plurality of counter bores along the horizontal direction, screws are arranged in the counter bores, and the scraper is clamped on the scraper rest by the scraper pressing plate and the screws;

the powder hiding prevention component is arranged in the counter bore or is connected with the counter bore and is used for preventing powder from entering the counter bore.

Further, the powder hiding prevention assembly comprises a plurality of first blocking caps, spring positioning beads and jackscrews;

the first blocking caps are provided with semicircular or V-shaped ring grooves along the circumferential direction, the first blocking caps are in clearance fit with the counter bores, the first blocking caps are arranged in the counter bores, and the outer sides of the first blocking caps are flush with the side walls of the scraper pressing plates;

the scraper clamp plate top all is provided with the through-hole in the position that corresponds the annular, be provided with the spring location pearl in the through-hole with the jackscrew, the ball of spring location pearl blocks the annular, the jackscrew is used for fixing the spring location pearl.

Further, the first caps each have a ferrite material.

Further, the powder hiding prevention assembly comprises a plurality of second blocking caps and sealing rings;

the counter bore is provided with internal threads, the second blocking caps are all provided with external threads, the second blocking caps are matched with the counter bore threads, the second blocking caps are all arranged in the counter bore, and the second blocking caps are flush with the side wall of the scraper pressing plate;

the sealing ring is used for preventing powder from entering the threaded connection part of the scraper pressing plate and the second blocking cap.

Further, the screws are arranged on the side wall of the scraper pressing plate at equal intervals, and the screws on the same side are arranged in the same plane.

Further, a plurality of grooves are formed in the tail of the second blocking cap, and in the disassembling process, a wrench is used for clamping the second blocking cap through the grooves, so that the disassembling is realized.

Further, the second plug cap is a T-shaped plug cap, and the sealing ring is arranged on the inner side of a T-shaped flank of the T-shaped plug cap.

Compared with the prior art, the utility model has the beneficial effects that:

1. the embodiment provides a 3D prints and scrapes knife rest screw mounting hole and prevents hiding powder device, the device sets up in scraper rest screw mounting hole and prevents hiding powder subassembly, through this prevent hiding powder subassembly, can avoid powder to get into the screw mounting hole, can solve scraper rest screw mounting hole and hide powder and drop to the problem that has spread the powder layer and lead to the part fusion bad, thereby improve the printing quality;

2. the embodiment provides a powder device is prevented hiding by 3D printing scraper rest screw mounting hole, through setting up first stifled cap in the counter bore, avoid powder to get into the counter bore, drop in shop's powder motion to first stifled cap through the spring positioning pearl, fix the spring positioning pearl through the jackscrew, the fit clearance of the device is little, through adopting the first stifled cap of ferrite material, can take out the stifled cap with magnet in the dismantlement process to realize quick dismantlement;

3. the embodiment provides a powder hiding preventing device for a screw mounting hole of a 3D printing scraper rest, which is characterized in that a semicircular or V-shaped annular groove is arranged on a first blocking cap, so that a spring positioning bead is convenient to clamp the first blocking cap, the first blocking cap is convenient to fix, and the first blocking cap is prevented from falling off;

4. this embodiment provides a powder device is prevented hiding by 3D printing scraper rest screw mounting hole, through at the stifled cap of second and counter bore screw thread matching, be convenient for screw into the counter bore with the stifled cap of second to avoid powder to get into in the counter bore, prevent through the sealing washer that powder from getting into scraper clamp plate and the threaded connection department of the stifled cap of second, avoid leading to the unable dismantlement of the stifled cap of the dead second of screw thread department card because of advancing the powder, through set up the recess at the stifled cap of second, be convenient for the spanner dismantles it.

Drawings

Fig. 1 is a schematic structural diagram of a powder hiding prevention device for a screw mounting hole of a 3D printing scraper frame according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional structure diagram of FIG. 1;

FIG. 3 is a schematic diagram II of a powder hiding prevention device for a screw mounting hole of a 3D printing scraper frame according to an embodiment of the present utility model;

fig. 4 is a sectional structure diagram of fig. 3.

The reference numerals are as follows:

the tool comprises a 1-scraper rest, a 2-scraper pressing plate, a 201-through hole, a 3-scraper, a 4-first blocking cap, a 401-annular groove, a 5-screw, a 6-spring positioning bead, a 7-jackscrew, an 8-magnet, a 9-second blocking cap, a 901-groove, a 10-sealing ring and an 11-wrench.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the embodiments described below are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Accordingly, the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings, is intended to represent only selected embodiments of the present application, and not to limit the scope of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be understood that in the description of the embodiments of the present utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1 to 4, the utility model provides a powder hiding prevention device for screw mounting holes of a 3D printing scraper rest, which comprises a scraper rest 1, a scraper pressing plate 2, a scraper 3 and powder hiding prevention components, wherein a plurality of counter bores are arranged on the side walls of two sides of the scraper pressing plate 2, the counter bores are all arranged along the horizontal direction, screws 5 are arranged in each counter bore, and the scraper 3 is clamped on the scraper rest 1 by the scraper pressing plate 2 and the screws 5.

The powder hiding prevention component is arranged in the counter bore or connected with the counter bore and is used for preventing powder from entering the counter bore, so that the problem of powder hiding in the screw mounting hole of the scraper rest is solved, and the reliability of equipment is improved.

The screws 5 are arranged on the side walls of the two sides of the scraper pressing plate 2 at equal intervals, and the screws 5 on the same side are arranged in the same plane.

Example 1

Referring to fig. 1 and 2, in the present embodiment, the powder storage preventing assembly includes a plurality of first caps 4, which are the same as the number of the counter bores, spring positioning beads 6, and a top thread 7.

The first blocking cap 4 is provided with a semicircular or V-shaped annular groove along the circumferential direction, the first blocking cap 4 is in clearance fit with the counter bore, all the first blocking caps 4 are arranged in all the counter bores, the outer sides of the first blocking caps 4 are flush with the side wall of the scraper pressing plate 2, and powder entering into the counter bores is avoided.

The scraper clamp plate 2 top all is provided with through-hole 201 in the position that corresponds all semi-circular or V-arrangement's annular for through-hole 201 and counter bore intercommunication all are provided with spring positioning bead 6 and jackscrew 7 in every through-hole 201, and the annular of semi-circular or V-arrangement is blocked to the ball of spring positioning bead 6, makes first stifled cap 4 can not drop in shop's powder motion in-process, and jackscrew 7 is used for fixed spring positioning bead 6. In actual use, the through hole 201 may be designed as a threaded hole, and the jackscrew 7 is screwed into the threaded hole, so as to fix the spring positioning bead 6.

The ball at the end of the spring positioning ball 6 has elasticity under the action of an internal spring, the ball leaks out of the hole wall of the counter bore on the scraper pressing plate 2, and the jackscrew 7 is installed in the through hole 201 of the scraper pressing plate 2 to prevent the spring positioning ball 6 from loosening.

All of the first caps 4 have a ferritic material. During installation, the first blocking cap 4 is plugged into counter bores on two sides of the scraper pressing plate 2, when the scraper 3 needs to be disassembled, the magnet 8 is used for sucking out the first blocking cap 4, the round beads on the spring positioning beads 6 are pressed back during sucking out, and accordingly the screw 5 is leaked out so as to unscrew the screw 5, and the scraper 3 is disassembled.

Example 2

Referring to fig. 3 and 4, in the present embodiment, the powder storage preventing assembly includes a plurality of second caps 9 having the same number as the counter bores and a sealing ring 10.

The internal threads are arranged in the counter bores, all second blocking caps 9 are provided with external threads, the second blocking caps 9 are matched with the counter bore threads, all second blocking caps 9 are arranged in all counter bores, the second blocking caps 9 are flush with the side walls of the scraper pressing plates 2, and powder entering into the counter bores is avoided.

The mounting groove is formed in the opening of the counter bore, the sealing ring 10 is arranged in the mounting groove, the sealing ring 10 is used for preventing powder from entering the threaded connection part of the scraper pressing plate 2 and the second blocking cap 9, and the situation that the second blocking cap 9 is blocked at the threaded part due to powder feeding is avoided.

In order to facilitate disassembly, 3 or 4 grooves 901 are formed in the tail of the second blocking cap 9, and in the disassembly process, the second blocking cap 9 is clamped through the grooves 901 by using a wrench 11, so that disassembly is realized. The wrench 11 has a tip that fits into the recess 901.

In actual use, the second blocking cap 9 may be designed as a T-shaped blocking cap, and the sealing ring 10 is disposed inside the T-shaped flank of the T-shaped blocking cap.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Powder device is prevented hiding by 3D printing scraper rest screw mounting hole, its characterized in that: comprises a scraper rest (1), a scraper pressing plate (2), a scraper (3) and a powder hiding prevention component; the side wall of the scraper pressing plate (2) is provided with a plurality of counter bores along the horizontal direction, screws (5) are arranged in the counter bores, and the scraper (3) is clamped on the scraper frame (1) by the scraper pressing plate (2) and the screws (5); the powder hiding prevention component is arranged in the counter bore or is connected with the counter bore and is used for preventing powder from entering the counter bore.

2. The 3D printing doctor blade holder screw mounting hole powder retention device of claim 1, wherein: the powder hiding prevention assembly comprises a plurality of first blocking caps (4), spring positioning beads (6) and jackscrews (7); the first blocking caps (4) are provided with semicircular or V-shaped ring grooves (401) along the circumferential direction, the first blocking caps (4) are in clearance fit with the counter bores, the first blocking caps (4) are arranged in the counter bores, and the outer sides of the first blocking caps (4) are flush with the side walls of the scraper pressing plates (2); the scraper clamp plate (2) top all is provided with through-hole (201) in the position that corresponds annular (401), be provided with in through-hole (201) spring location pearl (6) with jackscrew (7), the ball card of spring location pearl (6) annular (401), jackscrew (7) are used for fixing spring location pearl (6).

3. The 3D printing doctor blade holder screw mounting hole powder retention device of claim 1, wherein: the powder hiding prevention assembly comprises a plurality of second blocking caps (9) and sealing rings (10); the counter bore is provided with internal threads, the second blocking caps (9) are all provided with external threads, the second blocking caps (9) are matched with the counter bore threads, the second blocking caps (9) are all arranged in the counter bore, and the second blocking caps (9) are flush with the side wall of the scraper pressing plate (2); the sealing ring (10) is used for preventing powder from entering the threaded connection part of the scraper pressing plate (2) and the second blocking cap (9).

4. A 3D printing doctor blade holder screw mounting hole powder retention device according to any of claims 1-3, characterized in that: the screws (5) are arranged on the side wall of the scraper pressing plate (2) at equal intervals, and the screws (5) on the same side are arranged in the same plane.

5. A 3D printing doctor blade holder screw mounting hole powder containment device as claimed in claim 3, wherein: the tail part of the second blocking cap (9) is provided with a plurality of grooves (901), and in the disassembling process, a spanner (11) is used for clamping the second blocking cap (9) through the grooves (901), so that the disassembling is realized.

6. The 3D printing doctor blade holder screw mounting hole powder retention device of claim 5, wherein: the second plug cap (9) is a T-shaped plug cap, and the sealing ring (10) is arranged on the inner side of a T-shaped flank of the T-shaped plug cap.