CN113266675B

CN113266675B - Printing device

Info

Publication number: CN113266675B
Application number: CN202110439287.8A
Authority: CN
Inventors: 李国虎
Original assignee: Guangdong Layer Technology Development Co ltd
Current assignee: Guangdong Layer Technology Development Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2023-11-28
Anticipated expiration: 2041-04-23
Also published as: CN113266675A

Abstract

The invention discloses a material box sealing structure, which comprises a plurality of corner blocks arranged at the corners of the inner side of a material box and a plurality of elastic sheets arranged between the corner blocks, wherein each elastic sheet comprises a mounting part and an abutting part which is connected with the mounting part and is bent upwards, and the abutting part is used for abutting against the inner side wall of the material box; the angle blocks and the elastic sheets form a closed loop structure, so that the periphery of the inner side of the feed box is sealed. According to the material box sealing structure, the periphery of the inner side of the material box can be sealed through the closed loop structure formed between the corner blocks and the elastic sheets, so that materials are prevented from falling from gaps. In addition, the feed box sealing structure is simple in structure, convenient to maintain and replace and low in cost. In addition, the invention also provides a feed box with the feed box sealing structure and a printing device.

Description

Printing device

Technical Field

The invention relates to the field of 3D printing, in particular to a printing device.

Background

3D printing, also known as additive manufacturing, is a technology for constructing objects by using a layer-by-layer printing method by using a powdery metal or plastic or other bondable material on the basis of a digital model file. The technology is characterized in that the technology can produce articles with any shape, and is currently becoming an international and domestic leading-edge research field.

In the existing 3D printing device, printing materials inside a material box easily fall from gaps around the inner side of the material box, so that materials are accumulated at the bottom of equipment, the equipment is difficult to clean, the equipment is damaged, and the operation and the service life of the equipment are seriously affected.

For this reason, a sealing structure needs to be provided to the inside of the hopper to prevent the printing material from falling off. But the majority of the existing sealing structures adopt sealing strips for sealing, so that the structure is complex, and the maintenance and replacement cost is high. In addition, too loose of sealing strip laminating still has the material to drop from the lateral wall gap, and the too tight of laminating then leads to printing the bottom plate and is difficult to rely on the dead weight whereabouts in printing the in-process, needs increase mechanism to pull printing the bottom plate, has not only increased equipment cost, and has increased the factor that influences equipment reliability.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a printing device.

The invention adopts the technical proposal for solving the problems that:

a printing apparatus comprising a bin and a lifting mechanism, wherein:

the feed box comprises a box body, a feed box bottom plate arranged in the box body in a sliding manner and a feed box sealing structure arranged on the feed box bottom plate; the lifting mechanism is used for driving the bottom plate of the material box to move up and down;

the box sealing structure comprises a plurality of corner blocks arranged at corners of the inner side of the box and a plurality of first elastic pieces arranged among the corner blocks, wherein each first elastic piece comprises a mounting part and an abutting part which is connected with the mounting part and is bent upwards, and the abutting part is used for abutting against the inner side wall of the box; the corner blocks and the first elastic pieces form a closed loop structure, so that the periphery of the inner side of the material box is sealed;

the lifting mechanism comprises a lifting seat, the cavity is arranged on the outer side of the lifting seat, and the inner side wall of the cavity facing to one side of the lifting seat is clung to the outer side wall of the lifting seat.

Further, the lifting mechanism further comprises a base, a guide rail arranged on the base and a driving mechanism for driving the lifting seat to lift and slide along the guide rail;

under the action of the driving mechanism, the lifting seat slides and is abutted against the bottom plate of the material box, so that the bottom plate of the material box is driven to move up and down.

Further, the cavity comprises a chute arranged on the front side and the rear side of the lifting seat and a waste hopper arranged on the left side and the right side of the lifting seat, and the chute is communicated with the waste hopper.

Further, the automatic feeding device also comprises a second elastic piece which is arranged at the outer side of the waste hopper and is propped against the outer side wall of the waste hopper, and under the elastic action of the second elastic piece, the inner side wall of the waste hopper facing the lifting seat can be driven to be clung to the outer side wall of the lifting seat.

Further, the driving mechanism comprises a driving device, a screw rod arranged on the base and connected with the movable end of the driving device, and a nut seat arranged on the screw rod in a sliding manner; the nut seat is connected with the lifting seat.

Further, the mounting part of the first elastic piece is mounted on the plurality of slats arranged between the plurality of corner blocks.

Further, the corner blocks and the battens are provided with waist-shaped mounting holes for being mounted on the bottom plate of the material box.

Further, the elastic foaming device further comprises a pressing plate used for pressing the first elastic sheet mounting part and connected with the ribbon board, and elastic foaming materials are filled between the pressing plate and the first elastic sheet abutting part.

In summary, the printing device of the invention has the following advantages:

(1) According to the printing device, the periphery of the inner side of the material box can be sealed through the closed loop structure formed between the corner blocks and the first elastic sheet, so that materials are prevented from falling from the gap. Secondly, the first elastic sheet is used for sealing, and the friction force between the first elastic sheet and the inner side wall of the material box is small, so that the material box bottom plate can fall down by self weight in the printing process, and a mechanism is not required to be additionally arranged to pull the material box bottom plate; finally, the feed box sealing structure is simple in structure, convenient to maintain and replace and low in cost.

(2) According to the printing device, after the corner block and the ribbon board are moved to the proper positions, the locking piece is screwed into the kidney-shaped mounting hole, so that the corner block and the ribbon board can be fixed, and at the moment, the abutting part of the first elastic piece abuts against the inner side wall of the material box, and the inner side wall of the material box is sealed.

(3) According to the printing device, the elastic foaming material is filled between the pressing plate and the first elastic piece abutting part, and the printing material falls on the elastic foaming material instead of the gap between the pressing plate and the first elastic piece abutting part, so that the elastic compression stroke between the first elastic piece abutting part and the pressing plate is ensured.

(4) According to the printing device, the cavity is arranged on the outer side of the lifting seat, and when the printing material drops from the gap on the inner side of the feed box carelessly, the printing material falls into the cavity, so that the double protection effect is achieved.

Drawings

FIG. 1 is a schematic diagram of the structure of the bin seal structure of the invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with the platen hidden;

FIG. 3 is a schematic view of the structure of FIG. 2 after the elastic sheet is hidden;

FIG. 4 is a schematic cross-sectional view of FIG. 1;

FIG. 5 is an enlarged partial schematic view of portion A of FIG. 4;

FIG. 6 is a schematic view of the structure of the bin body of the invention with one side plate hidden;

FIG. 7 is a schematic view of a printing apparatus according to the present invention;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 8 from another perspective;

fig. 10 is a schematic structural view of fig. 9 after the lifting seat is hidden.

Wherein the reference numerals have the following meanings:

1. a corner block; 11. corner block mounting holes; 2. a first elastic sheet; 21. a mounting part; 211. spring plate mounting holes; 22. an abutting portion; 3. a slat; 31. a slat mounting hole; 4. a pressing plate; 41. a platen mounting hole; 5. a case; 6. a bottom plate of the feed box; 71. a base; 72. a guide rail; 73. a lifting seat; 731. a slide block; 741. a driving device; 742. a screw rod; 743. a nut seat; 751. a first synchronizing wheel; 752. a second synchronizing wheel; 753. a synchronous belt; 761. a first travel switch; 762. a second travel switch; 81. a chute; 82. a waste hopper; 83. a second spring plate; 9. an elastic foaming material.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 1-5, the present invention firstly provides a sealing structure of a material box, comprising a plurality of corner blocks 1 arranged at the corners of the inner side of the material box and a plurality of first elastic pieces 2 arranged between the corner blocks 1, wherein the first elastic pieces 2 comprise a mounting part 21 and an abutting part 22 which is connected with the mounting part 21 and is bent upwards, and the abutting part 22 is used for abutting against the inner side wall of the material box; the angle blocks 1 and the first elastic sheet 2 form a closed loop structure, so that the periphery of the inner side of the material box is sealed.

In this embodiment, the first elastic sheet 2 is a bending elastic sheet, one bending surface of which forms the mounting portion 21, and the other bending surface of which forms the abutting portion; the first elastic sheet 2 is made of stainless steel.

Therefore, the periphery of the inner side of the material box can be sealed through a closed loop structure formed between the corner blocks 1 and the first elastic sheet 2, so that the material is prevented from falling from the gap; secondly, the first elastic sheet 2 is used for sealing, and the friction force between the first elastic sheet and the inner side wall of the material box is small, so that the material box bottom plate 6 can fall down by self weight in the printing process, and a mechanism is not required to be additionally arranged to pull the material box bottom plate 6; finally, the feed box sealing structure is simple in structure, convenient to maintain and replace and low in cost.

Specifically, the box sealing structure further comprises a plurality of strips 3 arranged among the plurality of corner blocks 1, and the mounting part 21 of the first elastic sheet 2 is mounted on the strips 3. In addition, the elastic foaming material 9 is filled between the pressing plate 4 and the abutting portion 22 of the first elastic sheet 2, and the pressing plate 4 is used for pressing the mounting portion 21 of the first elastic sheet 2 and is connected with the slat 3.

In this embodiment, the mounting portion 21 of the first elastic sheet 2 is provided with an elastic sheet mounting hole 211, the corresponding position on the pressing plate 4 is provided with a pressing plate mounting hole 41, and the locking member is screwed into the elastic sheet mounting hole 211 and the pressing plate mounting hole 41 to fix the first elastic sheet 2, the pressing plate 4 and the lath 3.

Therefore, the first elastic sheet 2 can be driven to move by moving the strip plate 3 until the abutting part 22 of the first elastic sheet 2 abuts against the inner side wall of the material box, so that the inner side wall of the material box is sealed. By filling the elastic foaming material 9 between the pressing plate 4 and the first elastic sheet 2 abutting portion 22, the printing material will fall on the elastic foaming material 9 instead of in the gap between the pressing plate 4 and the first elastic sheet 2 abutting portion 22, thereby ensuring the elastic compression stroke between the first elastic sheet 2 abutting portion 22 and the pressing plate 4.

In addition, the corner block 1 is further provided with a corner block mounting hole 11, the slat 3 is provided with a slat mounting hole 31, and the corner block mounting hole 11 and the slat mounting hole 31 are waist-shaped holes.

Therefore, after the corner block 1 and the slat 3 are moved to the proper positions, the locking piece is screwed into the kidney-shaped hole, so that the corner block 1 and the slat 3 can be fixed.

Example two

Referring to fig. 6, the second aspect of the present invention further provides a bin comprising a bin body 5, a bin bottom plate 6 slidably disposed in the bin body 5, and a bin sealing structure as described above disposed on the bin bottom plate 6.

Specifically, the case 5 is composed of a front side plate, a rear side plate, a left side plate, and a right side plate. Wherein, the front side plate, the rear side plate, the left side plate and the right side plate are connected to form a rectangular frame.

By providing a bin sealing structure on the bin bottom plate 6, the periphery of the inner side of the bin can be sealed, so that materials can be prevented from falling from the gap.

Example III

Referring to fig. 7 to 10, a third aspect of the present invention also provides a printing apparatus comprising the hopper provided in the second aspect and a lifting mechanism for driving the hopper floor 6 to move up and down, the lifting mechanism comprising a base 71, guide rails 72 provided on both sides of the base 71, a lifting seat 73, and a driving mechanism for driving the lifting seat 73 to slide up and down along the guide rails 72.

In the present embodiment, the base 71 and the lifting seat 73 are rectangular frames, and the lifting seat 73 completely encloses the base 71.

Specifically, the driving mechanism includes a driving device 741, a screw rod 742 disposed on the base 71, a nut seat 743 slidably disposed on the screw rod 742, and a pulley transmission mechanism disposed between the driving device 741 and the screw rod 742; the nut seat 743 is connected to the lifting seat 73; the lifting seat 73 is provided with a sliding block 731 which is matched with the guide rail 72. The pulley transmission mechanism includes a first synchronizing wheel 751 connected to a movable end of a driving device 741, a second synchronizing wheel 752 connected to an output end of a screw 742, and a synchronous belt 753 wound around the first synchronizing wheel 751 and the second synchronizing wheel 752 and transmitting to each other.

Therefore, under the drive of the driving device 741, the screw rod 742 is driven to rotate by the belt pulley conveying mechanism, and then the nut seat 743 on the screw rod 742 is driven to move along the axial direction of the screw rod 742, so that the lifting seat 73 is driven to slide up and down and abut against the bottom plate 6 of the material box, and then the bottom plate 6 of the material box is driven to move up and down, so that the material box reaches the expected position, and the printing precision of equipment is improved.

In the present embodiment, the printing apparatus is further provided with a first travel switch 761 and a second travel switch 762 having different heights outside the lifting base 73. By providing the first travel switch 761 and the second travel switch 762, the elevation height of the elevation seat 73 can be controlled, so that the bin bottom plate 6 can reach the corresponding position. The driving device 741 is a servo motor.

Referring to fig. 7-10, the printing apparatus further includes a cavity disposed outside the lifting seat 73 for receiving waste, wherein an inner sidewall of the cavity facing the lifting seat 73 is closely attached to an outer sidewall of the lifting seat 73.

Specifically, the cavity includes a chute 81 disposed on the front and rear sides of the lifting seat 73 and a waste hopper 82 disposed on the left and right sides of the lifting seat 73, wherein the inner side wall of the chute 81 facing the lifting seat 73 is closely attached to the outer side wall of the front and rear sides of the lifting seat 73; the inner side wall of the waste hopper 82 facing the lifting seat 73 is closely attached to the outer side walls of the left and right sides of the lifting seat 73; the chute 81 communicates with a waste hopper 82.

Therefore, by arranging the cavity outside the lifting seat 73, when the printing material carelessly falls from the gap inside the feed box, the printing material falls into the cavity, so that the double protection effect is realized. When the printing material falls into the chute 81, it will slide along the chute 81 and eventually fall into the waste hopper 82, eventually requiring only disassembly of the waste hopper 82 for disposal.

In addition, the device further comprises a second elastic piece 83 which is arranged at the outer side of the waste hopper 82 and is abutted against the outer side wall of the waste hopper 82, and the inner side wall of the waste hopper 82 facing the lifting seat 73 can be driven to be clung to the outer side wall of the lifting seat 73 under the elastic force action of the second elastic piece 83.

In this embodiment, the second spring 83 has a U shape, so that the sliding in and out of the waste hopper 82 is facilitated.

In summary, the material box sealing structure, the material box and the printing device provided by the invention have the following beneficial effects:

according to the material box sealing structure, the periphery of the inner side of the material box can be sealed through a closed loop structure formed between the corner blocks 1 and the first elastic sheet 2, so that materials are prevented from falling from gaps; secondly, the first elastic sheet 2 is used for sealing, and the friction force between the first elastic sheet and the inner side wall of the material box is small, so that the material box bottom plate 6 can fall down by self weight in the printing process, and a mechanism is not required to be additionally arranged to pull the material box bottom plate 6; finally, the feed box sealing structure is simple in structure, convenient to maintain and replace and low in cost.

Secondly, according to the material box sealing structure, after the corner block 1 and the strip plate 3 are moved to the proper positions, the corner block 1 and the strip plate 3 can be fixed by screwing the locking piece into the kidney-shaped mounting hole, and at the moment, the abutting part 22 of the first elastic piece 2 abuts against the inner side wall of the material box, so that the inner side wall of the material box is sealed.

(III) according to the bin sealing structure of the invention, by filling the elastic foaming material 9 between the pressing plate 4 and the abutting part 22 of the first elastic sheet 2, the printing material falls on the elastic foaming material 9 instead of the gap between the pressing plate 4 and the abutting part 22 of the first elastic sheet 2, so that the elastic compression stroke between the abutting part 22 of the first elastic sheet 2 and the pressing plate 4 is ensured.

And fourthly, by arranging the cavity outside the lifting seat 73, when the printing material drops from the gap inside the material box carelessly, the printing material falls into the cavity, thereby playing a role of double protection.

The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims

1. A printing device, characterized by comprising a feed box and a lifting mechanism, wherein:

the feed box comprises a box body (5), a feed box bottom plate (6) arranged in the box body (5) in a sliding manner and a feed box sealing structure arranged on the feed box bottom plate (6); the lifting mechanism is used for driving the feed box bottom plate (6) to move up and down;

the box sealing structure comprises a plurality of corner blocks (1) arranged at corners of the inner side of the box and a plurality of first elastic pieces (2) arranged among the corner blocks (1), wherein each first elastic piece (2) comprises a mounting part (21) and an abutting part (22) which is connected with the mounting part (21) and is bent upwards, and the abutting part (22) is used for abutting against the inner side wall of the box; the corner blocks (1) and the first elastic sheet (2) form a closed loop structure, so that the periphery of the inner side of the material box is sealed;

the lifting mechanism comprises a lifting seat (73), wherein the cavity is arranged on the outer side of the lifting seat (73), and the inner side wall of the cavity facing to one side of the lifting seat (73) is clung to the outer side wall of the lifting seat (73).

2. The printing apparatus according to claim 1, wherein the lifting mechanism further comprises a base (71), a guide rail (72) provided on the base (71), and a driving mechanism that drives the lifting base (73) to slide up and down along the guide rail (72);

under the action of the driving mechanism, the lifting seat (73) slides and is abutted against the bottom plate (6) of the material box, so that the bottom plate (6) of the material box is driven to move up and down.

3. Printing device according to claim 2, wherein the chamber comprises a chute (81) provided on the front and rear sides of the lifting base (73) and waste hoppers (82) provided on the left and right sides of the lifting base (73), the chute (81) being in communication with the waste hoppers (82).

4. A printing device according to claim 3, further comprising a second elastic sheet (83) disposed at the outer side of the waste hopper (82) and abutting against the outer side wall of the waste hopper (82), wherein the second elastic sheet (83) can drive the inner side wall of the waste hopper (82) facing the lifting seat (73) to be clung to the outer side wall of the lifting seat (73) under the action of the elastic force of the second elastic sheet.

5. Printing device according to claim 2, wherein the drive mechanism comprises a drive device (741), a screw (742) arranged on the base (71) and connected to the movable end of the drive device (741), and a nut seat (743) slidingly arranged on the screw (742); the nut seat (743) is connected with the lifting seat (73).

6. Printing device according to claim 1, further comprising a number of slats (3) arranged between the number of corner blocks (1), the mounting portion (21) of the first spring plate (2) being mounted on the slats (3).

7. Printing device according to claim 6, wherein a number of said corner blocks (1) and slats (3) are provided with kidney-shaped mounting holes for mounting on a bin floor (6).

8. Printing device according to claim 6, further comprising a pressing plate (4) for pressing the mounting portion (21) of the first elastic sheet (2) and being connected to the slat (3), the elastic foaming material (9) being filled between the pressing plate (4) and the abutment portion (22) of the first elastic sheet (2).