CN217912853U

CN217912853U - Sintering plate leveling mechanism for 3D printing equipment

Info

Publication number: CN217912853U
Application number: CN202222355574.3U
Authority: CN
Inventors: 张志勇; 刘鑫炎; 潘良明; 陈禹含
Original assignee: Hunan Farsoon High Tech Co Ltd
Current assignee: Hunan Farsoon High Tech Co Ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-11-29
Anticipated expiration: 2032-09-05

Abstract

The application provides a sintering plate leveling mechanism for 3D printing equipment, which relates to the technical field of selective laser sintering and comprises a leveling base and a leveling unit, wherein the leveling base is provided with a first positioning plane and a second positioning plane which are arranged in parallel at intervals; the leveling unit comprises a positioning frame and a plurality of detection meters, and the detection meters are connected with the positioning frame; the positioning frame is provided with a third positioning plane, the third positioning plane is attached to the first positioning plane, and a detection head of the detection meter is contacted with the second positioning plane; the third positioning plane is used for being matched with the forming cavity bottom plate; and when the detection head is in contact with the second positioning plane, the numerical value of the corresponding detection table is reset to zero, so that the reference positioning plane determined by the plurality of detection heads together is superposed with the second positioning plane when the plurality of detection tables are in an initial state. The mechanism is high in debugging efficiency and precision, the scraper is not easy to damage, and the safety is high.

Description

Sintering plate leveling mechanism for 3D printing equipment

Technical Field

The utility model relates to a selectivity laser sintering technical field particularly, relates to a sintered plate levelling mechanism for 3D printing apparatus.

Background

The selective laser sintering process adopts a laser as an energy source, and the used materials are mostly powder materials. During processing, firstly, preheating the powder to a temperature slightly lower than the melting point of the powder, and then, paving the powder under the action of a scraper; the laser beam is selectively sintered under the control of a computer according to the information of the layered cross section, the next layer of sintering is carried out after one layer is finished, and redundant powder is removed after all sintering is finished, so that a sintered part can be obtained. The mature process materials are wax powder and plastic powder, and the process of sintering by using metal powder or ceramic powder is still under study. The forming method has the characteristics of simple manufacturing process, high flexibility, wide material selection range, low material price, low cost, high material utilization rate, high forming speed and the like, is mainly applied to the casting industry, and can be used for directly manufacturing a quick die. In the prior art, in order to ensure the sintering quality, the sintering plate needs to be leveled and positioned first, and the gap between the scraper and the sintering plate is inspected by a feeler gauge to level the substrate at present, so that the defects of long time consumption, low leveling precision, easy damage to the scraper and the like exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sintered plate levelling mechanism for 3D printing apparatus, its efficiency that can improve the leveling operation improves the leveling precision, and not fragile scraper.

The embodiment of the utility model is realized like this:

the utility model provides a sintered plate levelling mechanism for 3D printing apparatus, include:

the leveling device comprises a leveling base and a leveling unit, wherein the leveling base is provided with a first positioning plane and a second positioning plane which are arranged in parallel at intervals; the leveling unit comprises a positioning frame and a plurality of detection meters, and the detection meters are connected with the positioning frame; the positioning frame is provided with a third positioning plane, the third positioning plane is attached to the first positioning plane, and the detection head of the detection meter is in contact with the second positioning plane; the third positioning plane is used for being matched with the forming cavity bottom plate;

and when the detection head is in contact with the second positioning plane, the numerical value of the corresponding detection table is reset to zero, so that when the detection tables are in an initial state, a reference positioning plane determined by the detection heads is coincided with the second positioning plane.

In an optional embodiment, the detection meter is configured as a dial indicator or a dial indicator.

In an optional implementation manner, a limiting groove is arranged on the second positioning plane, the first positioning plane is located on the groove bottom wall of the limiting groove, and the positioning frame is embedded in the limiting groove.

In an alternative embodiment, the bottom of the leveling base is provided with a plurality of anti-skid supporting feet.

In an alternative embodiment, the number of the limiting grooves is two; the positioning frame comprises a positioning plate and two supporting plates, the two supporting plates are both connected with the positioning plate, and the two supporting plates are respectively embedded in the two limiting grooves; the third positioning plane is arranged on the surface, close to the supporting plate, of the positioning plate.

In an optional embodiment, an electromagnet module is arranged on the leveling base, a magnetic body is arranged on the supporting plate, and the electromagnet module is used for being in magnetic adsorption connection with the magnetic body under the electrified condition.

In an optional embodiment, a first fixing hole is formed in the positioning plate, a second fixing hole is formed in the supporting plate, the first fixing hole is communicated with the second fixing hole, a screw penetrates through the first fixing hole, and the screw is in threaded connection with the second fixing hole.

In an optional implementation manner, a clamping arm is arranged on the positioning plate, a clamping opening with an adjustable size is defined by the clamping arm and the positioning plate together, and a detection rod of the detection meter is arranged in the clamping opening in a penetrating manner.

In an alternative embodiment, a handle is provided on the positioning plate.

In an optional embodiment, a mounting groove is provided on the third positioning plane, a roller is disposed in the mounting groove, and a wheel surface of the roller is located in the third positioning plane.

The embodiment of the utility model provides a beneficial effect is:

in summary, when the sintering plate leveling mechanism for 3D printing equipment provided by this embodiment is used, the positioning frame of the leveling unit and the leveling base are assembled together, the third positioning plane of the positioning frame is attached to the first positioning plane of the leveling base, so that the third positioning plane and the second positioning plane are in a parallel state, then the detection head of each detection table is in contact with the second positioning plane on the leveling base, and the value of each detection table is zeroed, so that when a plurality of detection tables are in an initial state, the planes determined by the detection heads are parallel to the second positioning plane. And then, detaching the leveling unit from the leveling base, attaching the third positioning plane to the top surface of the forming cavity bottom plate, adjusting the sintering plate to enable the top surface of the sintering plate to be in contact with a detection head of a detection meter, and adjusting the position of the sintering plate by using the detection meter, thereby leveling the sintering plate. In addition, in the process of adjusting the sintering plate, the leveling unit is moved to be in contact with different positions of the sintering plate, so that the whole sintering plate is leveled, and the leveling efficiency and the leveling precision are high; the scraper is not required to be contacted in the leveling process, and the scraper is not easy to damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a leveling mechanism for a sintered plate according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a leveling base plate according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a leveling unit according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an application of a position of a leveling mechanism for a sintered plate according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating another position of the leveling mechanism for the sintered plate according to the embodiment of the present invention.

An icon:

001-forming cavity floor; 100-leveling a base; 110-a first location plane; 120-a second location plane; 130-a limiting groove; 140-an electromagnet module; 200-a leveling unit; 210-a positioning frame; 211-a positioning plate; 212-a support plate; 213-a third location plane; 214-a gripper arm; 220-detection table; 221-a detection rod; 222-a detection head; 300-anti-skidding supporting legs.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Currently, before a 3d printing device works, the optical system and other components need to be debugged, for example, the levelness of a sintering plate needs to be adjusted. In the prior art, a clearance between a scraper and a sintering plate is detected by using a feeler gauge to level a substrate, and the debugging mode has the defects of long time consumption, low leveling precision, easy damage to the scraper and the like.

In view of this, the designer has designed a sintering board leveling mechanism for 3D printing apparatus, can improve debugging efficiency, improves the debugging precision to difficult damage scraper, the security is high.

Referring to fig. 1, fig. 4 and fig. 5, in the present embodiment, the leveling mechanism for a sintering plate of a 3D printing apparatus includes a leveling base 100 and a leveling unit 200, where the leveling base 100 has a first positioning plane 110 and a second positioning plane 120 arranged in parallel at intervals; the leveling unit 200 comprises a positioning frame 210 and a plurality of detection tables 220, wherein the detection tables 220 are connected with the positioning frame 210; the positioning frame 210 has a third positioning plane 213, the third positioning plane 213 is attached to the first positioning plane 110, and the detection head 222 of the detection meter 220 contacts with the second positioning plane 120; the third locating plane 213 is for mating with the mold cavity floor 001. When the detection head 222 contacts the second positioning plane 120, the value of the corresponding detection table 220 is zeroed, so that the reference positioning plane determined by the plurality of detection heads 222 is overlapped with the second positioning plane 120 when the plurality of detection tables 220 are in the initial state.

The usage of the leveling mechanism for the sintering plate of the 3D printing apparatus provided in this embodiment includes, for example:

when the leveling device is used, the positioning frame 210 of the leveling unit 200 and the leveling base 100 are assembled together, the third positioning plane 213 of the positioning frame 210 is attached to the first positioning plane 110 of the leveling base 100, so that the third positioning plane 213 and the second positioning plane 120 are in a parallel state, then the detection head 222 of each detection meter 220 is in contact with the second positioning plane 120 on the leveling base 100, and the value of each detection meter 220 is zero, so that when a plurality of detection meters 220 are in an initial state, the planes determined by the detection heads 222 are parallel to the second positioning plane 120. Next, the leveling unit 200 is detached from the leveling base 100, and then the third positioning plane 213 is attached to the top surface of the molding cavity bottom plate 001, at this time, the sintered plate is adjusted so that the top surface of the sintered plate contacts the detection head 222 of the detection meter 220, and the position of the sintered plate is adjusted by using the detection meter 220, thereby leveling the sintered plate. That is, the top surface of the sintered plate is brought into contact with the test tables 220, and the position of the sintered plate is adjusted such that the value of each test table 220 is indicated on a zero scale. In addition, in the process of adjusting the sintering plate, the leveling unit 200 is moved to be in contact with different positions of the sintering plate, so that the whole sintering plate is leveled, and the leveling efficiency and the leveling precision are high; the scraper is not required to be contacted in the leveling process, and the scraper is not easy to damage.

In this embodiment, optionally, the detection meter 220 is set as a dial indicator or a dial indicator, the dial indicator or the dial indicator is of a known structure, and in order to avoid repeated encumbrance, a specific structure and a using method thereof are not specifically described in this embodiment. For example, in the present embodiment, each of the plurality of detection gauges 220 is a dial gauge. Further, the number of the detection tables 220 may be three.

Referring to fig. 1 and fig. 2, in the present embodiment, optionally, the leveling base 100 is configured as a rectangular plate, the leveling base 100 has a first plate surface and a second plate surface opposite to the first plate surface, the first plate surface is provided with a plurality of anti-skid supporting legs 300, the second plate surface is the second positioning plane 120, two ends of the second positioning plane 120 are respectively provided with a limiting groove 130, the limiting groove 130 is a rectangular groove, and a groove bottom wall of the limiting groove 130 is the first positioning plane 110. The quantity of anti-skidding supporting legs 300 can be two, and two anti-skidding supporting legs 300 are located the both ends of leveling base 100 respectively to every anti-skidding supporting legs 300 all can set up the round platform of making into metal material, and the great terminal surface of diameter and the laminating of first face of anti-skidding supporting legs 300, a less terminal surface of diameter is used for supporting on table surface. The end face with the smaller diameter is provided with a groove, a rubber block is embedded in the groove, the surface of the rubber block and the end face where the notch of the groove is located, namely the end face with the smaller diameter, are located in the same plane, and the plane is parallel to the first positioning plane 110 and the second positioning plane 120. Through setting up anti-skidding supporting legs 300, when using leveling base 100, utilize a plurality of anti-skidding supporting legs 300 to support jointly on the workstation, frictional force is big, and stability is good, and a plurality of detection table 220 go on the leveling unit 200 of being convenient for return to zero the operation.

The anti-slip support legs 300 may be fixed to the leveling base 100 by welding, or the anti-slip support legs 300 may be fixed to the leveling base 100 by screws or the like.

Further, an assembly groove is formed in the first positioning plane 110, an electromagnet module 140 is embedded in the assembly groove, the electromagnet module 140 comprises an electromagnet body and a battery, the battery and the electromagnet body are embedded in the assembly groove, an opening is formed in the side wall of the leveling base 100 and communicated with the assembly groove, a switch of the battery extends out of the opening, the battery and the electromagnet body can be connected or disconnected through a press switch, and the electromagnet body has magnetism after being powered on and loses magnetism after being powered off. Moreover, the surface of the electromagnet exposed on the notch of the assembly slot and the first positioning plane 110 are in the same plane, which does not affect the assembly of the leveling unit 200 and the leveling base 100.

Referring to fig. 1 and fig. 3, in the present embodiment, optionally, the positioning frame 210 includes a positioning plate 211 and two supporting plates 212, the two supporting plates 212 are both connected to the positioning plate 211, and the two supporting plates 212 are respectively embedded in the two limiting grooves 130; the third positioning plane 213 is disposed on the surface of the positioning plate 211 close to the supporting plate 212. Optionally, the positioning plate 211 and the supporting plate 212 may be metal plates, and thus, the supporting plate 212 may be adsorbed by the electromagnet body, so as to improve the combining firmness of the positioning frame 210 and the leveling base 100, and when the detection table 220 is adjusted, the positioning frame is not easy to shift or loosen, and the adjustment of the detection table 220 is more accurate and reliable. Alternatively, in another embodiment, a magnetic body may be disposed on the support plate 212, and the magnetic body may be a metal piece or a magnet, and is magnetically attached to the electromagnet body by the magnetic body. It should be appreciated that each support plate 212 may cooperate with one electromagnet module 140 to further improve stability. During specific operation, the electromagnet body is in a power-off state firstly, the two support plates 212 of the positioning frame 210 are embedded in the two limiting grooves 130 respectively, and after the third positioning planes 213 on the support plates 212 are attached to the corresponding first positioning planes 110, the switch is pressed, so that the electromagnet body is powered on and generates magnetism, and the electromagnet body is adsorbed by a magnetic body, and positioning and fixing of the leveling base 100 are realized.

Alternatively, the positioning plate 211 and the supporting plate 212 may be fixed by welding. Alternatively, the positioning plate 211 and the supporting plate 212 are fixed by screws. For example, a first fixing hole is formed in the positioning plate 211, a second fixing hole is formed in the supporting plate 212, the second fixing hole may be a circular hole, a screw penetrates through the first fixing hole, and the screw can be screwed in the second fixing hole. The number of the first fixing holes and the number of the second fixing holes are set as required, and each first fixing hole is matched with one second fixing hole.

Optionally, a clamping arm 214 is arranged on the positioning plate 211, a clamping opening with adjustable size is defined by the clamping arm 214 and the positioning plate 211 together, and a detection rod 221 of the detection meter 220 penetrates through the clamping opening. The clamping arm 214 is provided with a screw which is screwed with the positioning plate 211, and the clamping arm 214 can be close to the positioning plate 211 to reduce the width of the clamping opening by screwing the screw, so that the detection rod 221 can be clamped, and the clamping arm 214 can be far away from the positioning plate 211 to increase the width of the household pool opening, so that the detection rod 221 can be loosened. Thus, the assembly of the test meter 220 is convenient.

It should be understood that after the debugging of the sensing gauge 220 of the leveling unit 200 is completed, the supporting plate 212 needs to be supported on the surface of the molding cavity base plate 001, and the sintered plate is debugged using the sensing gauge 220 by moving the leveling unit 200. In order to facilitate the movement of the leveling unit 200, a handle is installed at a side of the positioning plate 211. Meanwhile, in order to reduce the friction force, an installation groove is formed in the third positioning plane 213, a roller is arranged in the installation groove, and the surface of the roller is located in the third positioning plane 213. It should be understood that the roller can be made of metal, and the roller can be used as a magnetic body to be connected with the electromagnet body in an adsorption manner. Or the roller and the magnetic body are independent structures and do not interfere with each other.

The sintered plate leveling mechanism provided by the embodiment can improve the leveling operation efficiency and leveling precision, and is not easy to damage a scraper.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sintered plate leveling mechanism for a 3D printing apparatus, comprising:

the leveling device comprises a leveling base (100) and a leveling unit (200), wherein the leveling base (100) is provided with a first positioning plane (110) and a second positioning plane (120) which are arranged in parallel at intervals; the leveling unit (200) comprises a positioning frame (210) and a plurality of detection tables (220), wherein the detection tables (220) are connected with the positioning frame (210); the positioning frame (210) is provided with a third positioning plane (213), the third positioning plane (213) is attached to the first positioning plane (110), and a detection head (222) of the detection meter (220) is in contact with the second positioning plane (120); the third positioning plane (213) is used for matching with the forming cavity bottom plate (001);

when the detection head (222) is in contact with the second positioning plane (120), the numerical value of the corresponding detection table (220) is reset to zero, so that when the plurality of detection tables (220) are in an initial state, a reference positioning plane determined by the plurality of detection heads (222) is overlapped with the second positioning plane (120).

2. The frit plate leveling mechanism for a 3D printing apparatus according to claim 1, wherein:

the detection meter (220) is set as a dial indicator or a dial indicator.

3. The frit plate leveling mechanism for a 3D printing apparatus according to claim 1, wherein:

the second positioning plane is provided with a limiting groove (130), the first positioning plane is located on the groove bottom wall of the limiting groove (130), and the positioning frame (210) is embedded in the limiting groove (130).

4. The frit plate leveling mechanism for a 3D printing device according to claim 3, wherein:

the bottom of the leveling base (100) is provided with a plurality of anti-skidding supporting legs (300).

5. The frit plate leveling mechanism for a 3D printing device according to claim 3, wherein:

the number of the limiting grooves (130) is two; the positioning frame (210) comprises a positioning plate (211) and two supporting plates (212), the two supporting plates (212) are connected with the positioning plate (211), and the two supporting plates (212) are respectively embedded in the two limiting grooves (130); the third positioning plane (213) is arranged on the surface of the positioning plate (211) close to the supporting plate (212).

6. The frit plate leveling mechanism for a 3D printing device according to claim 5, wherein:

the leveling base (100) is provided with an electromagnet module (140), the supporting plate (212) is provided with a magnetic body, and the electromagnet module (140) is used for being connected with the magnetic body in a magnetic adsorption mode under the power-on condition.

7. The sinter plate leveling mechanism for a 3D printing apparatus of claim 5, wherein:

the positioning plate (211) is provided with a first fixing hole, the supporting plate (212) is provided with a second fixing hole, the first fixing hole is communicated with the second fixing hole, a screw penetrates through the first fixing hole, and the screw is in threaded connection with the second fixing hole.

8. The frit plate leveling mechanism for a 3D printing device according to claim 5, wherein:

be provided with clamping arm (214) on locating plate (211), clamping arm (214) with locating plate (211) inject big or small adjustable centre gripping mouth jointly, detection pole (221) of detecting table (220) wear to locate in the centre gripping mouth.

9. The sinter plate leveling mechanism for a 3D printing apparatus of claim 5, wherein:

the positioning plate (211) is provided with a handle.

10. The frit plate leveling mechanism for a 3D printing apparatus according to claim 1, wherein:

the third positioning plane (213) is provided with a mounting groove, rollers are arranged in the mounting groove, and the wheel surfaces of the rollers are located in the third positioning plane (213).