CN215095669U

CN215095669U - Forming cylinder assembly and 3D printing device

Info

Publication number: CN215095669U
Application number: CN202120821373.0U
Authority: CN
Inventors: 郭超; 梁爽; 李龙
Original assignee: Tianjin Qingyan Zhishu Technology Co ltd
Current assignee: Tianjin Qingyan Zhishu Technology Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-10
Anticipated expiration: 2031-04-21

Abstract

The utility model belongs to the technical field of 3D prints, a shaping cylinder subassembly and 3D printing device is disclosed, shaping cylinder subassembly includes: the side wall of the forming cylinder is provided with a first locking piece and a first guide positioning block, the bottom of the forming cylinder is provided with a piston plate, and the piston plate is provided with a locking connecting piece; the positioning plate is provided with a second locking part, a first guide block and a first positioning block, the second locking part can be locked with the first locking part, the first guide positioning block can be guided by the first guide block and is abutted against the first positioning block, and a piston rod of a piston of the 3D printing device penetrates through the positioning plate in a sliding mode; and the locking assembly is connected to the piston rod and can be locked on the locking connecting piece. The utility model discloses can make the easy dismounting of piston rod and piston plate, at the printing in-process, can guarantee the planar decline precision of shaping, guarantee the planar stability of shaping simultaneously, can not cause the pollution to 3D printing device's real empty room moreover, guarantee the normal clear of printing.

Description

Forming cylinder assembly and 3D printing device

Technical Field

The utility model relates to a 3D prints technical field, especially relates to a forming cylinder subassembly and 3D printing device.

Background

The forming cylinder assembly of the 3D printing device is used for placing powder to be printed and descending layer by layer in the printing process so as to manufacture a new layer of parts. Generally, the forming cylinder assembly comprises a forming cylinder and a piston for driving the forming cylinder to lift, a piston plate connected with a piston rod of the piston is arranged at the bottom of the forming cylinder, in the 3D printing process, each layer to be printed needs to accurately drop to a set height through the piston rod, and the powder paving device finishes paving and conveying the powder to ensure that the powder conveyed by each layer is uniformly paved on the forming cylinder.

Along with the continuous progress of the printing work, the descending height of the piston rod is gradually increased, and meanwhile, the weight of powder borne by the piston plate is also continuously increased, so that the piston rod is required to accurately descend, and meanwhile, the sufficient structural strength is ensured; after printing is finished, the forming cylinder and the piston plate need to be taken out of the 3D printing equipment, the piston rod and the piston plate need to be separated at the moment, and the forming cylinder and the piston plate need to be assembled again before printing is started, so that the disassembly and assembly mode of the piston rod and the piston plate is simple, convenient and quick, and meanwhile, the installation precision and the structural strength need to be guaranteed.

At present, in order to facilitate the disassembly and assembly of the piston rod and the piston plate, the piston rod is locked with the locking assembly through the locking block when retracting in the prior art, and then the unlocking assembly is used for realizing quick unlocking when pressure oil is injected. However, since the electron beam printing process is in a high vacuum and high temperature environment, and at the same time, the cleanliness is very high, once the injected pressure oil leaks, the whole vacuum chamber is polluted, which results in failure of the cathode of the emitted electron beam and failure of the metal powder used for printing, and therefore, a forming cylinder assembly which can facilitate the disassembly and assembly of the piston rod and the piston plate and does not affect the printing is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a forming cylinder subassembly and 3D printing device, the easy dismounting of piston rod and piston board, and can not cause the pollution to 3D printing device's real empty room, guaranteed the normal clear of printing.

To achieve the purpose, the utility model adopts the following technical proposal:

a molding cylinder assembly comprising:

the side wall of the forming cylinder is provided with a first locking piece and a first guide positioning block, and the bottom of the forming cylinder is provided with a locking connecting piece;

the positioning plate is provided with a second locking part, a first guide block and a first positioning block, the second locking part can be locked with the first locking part, the first guide positioning block can be guided by the first guide block and abutted against the first positioning block, and a piston rod of a piston of the 3D printing device penetrates through the positioning plate in a sliding mode;

and the locking assembly is connected to the piston rod and can be locked to the locking connecting piece.

Preferably, the two sides of the forming cylinder are further provided with second guide positioning blocks, the positioning plate is further provided with second guide blocks and second positioning blocks, and the second guide positioning blocks can be guided by the second guide blocks and are sleeved on the second positioning blocks.

Preferably, the center of the second guide positioning block is provided with a jack, the second positioning block is of a columnar structure, and the columnar structure can be inserted into the jack.

Preferably, the first retaining member has been seted up the open slot, the second retaining member including rotate set up in installation piece on the locating plate, install in cam handle on the installation piece, cam handle can follow the installation piece rotates to inlaying and locates in the open slot, and can with first retaining member locking.

As preferred, locking Assembly include with piston rod fixed connection's fixed plate is fixed in first fixed block and the second fixed block that just sets up relatively on the fixed plate is located first fixed block with movable block between the second fixed block rotationally wears to locate first fixed block with screw rod on the second fixed block, and the cover is located prevent the nut that changes on the screw rod, screw rod threaded connection in the movable block, the movable block can under the rotation of screw rod to first fixed block removes, with first fixed block cooperation will locking connection spare locks.

Preferably, the locking connecting piece is provided with a yielding groove, and when the locking assembly is locked on the locking connecting piece, the screw rod is arranged in the yielding groove.

Preferably, the positioning plate is further provided with a limit stop, and the side wall of the forming cylinder can be attached to the limit stop.

Preferably, the number of the first locking pieces and the number of the first guide positioning blocks are two, and the two first locking pieces and the two first guide positioning blocks are symmetrically arranged on two side walls of the forming cylinder.

Preferably, a plurality of supporting blocks are arranged on the piston plate.

The utility model also provides a 3D printing device, including foretell forming cylinder subassembly.

The utility model has the advantages that: through the structure, the piston rod and the piston plate can be conveniently disassembled and assembled, the descending precision of the forming plane can be guaranteed in the printing process, the stability of the forming plane is guaranteed, the vacuum chamber of the 3D printing device cannot be polluted, and the normal printing is guaranteed.

Drawings

Fig. 1 is a schematic structural view of a forming cylinder assembly provided by the present invention;

FIG. 2 is a schematic view of the forming cylinder and the assembly of the components thereon provided by the present invention;

FIG. 3 is a schematic view of the positioning plate and the assembly of the components thereon;

fig. 4 is a schematic view of the connection between the locking assembly and the piston rod provided by the present invention.

In the figure:

1. a forming cylinder; 2. a first locking member; 21. an open slot; 3. a first guide positioning block; 4. locking the connecting piece; 41. a yielding groove; 5. positioning a plate; 6. a second locking member; 61. mounting blocks; 62. a cam handle; 7. a first guide block; 8. a first positioning block; 9. a piston rod; 10. a second guide positioning block; 101. a jack; 11. a second guide block; 12. a second positioning block; 13. a locking assembly; 131. a fixing plate; 132. a first fixed block; 133. a second fixed block; 134. a movable block; 135. a screw; 136. an anti-rotation nut; 14. a limit stop block; 15. and (7) a supporting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a forming cylinder subassembly, it is applied to 3D printing device, is particularly useful for electron beam 3D printing device. As shown in fig. 1, the forming cylinder assembly includes a forming cylinder 1, a positioning plate 5 and a locking assembly 13, the forming cylinder 1 is used for a 3D printing apparatus to print a formed part, the positioning plate 5 is fixedly installed in a forming chamber of the 3D printing apparatus, the positioning plate 5 can lock and fixedly support the forming cylinder 1, and the locking assembly 13 is used for locking a piston rod 9 of a piston of the 3D printing apparatus with the bottom of the forming cylinder 1. Through the structure, when the forming cylinder 1 is installed, the forming cylinder 1 can be arranged on the positioning plate 5 and supported and fixed by the components on the positioning plate, the bottom of the forming cylinder 1 is connected to the piston rod 9, and then the forming cylinder 1 can be driven to ascend or descend by the piston rod 9 so as to realize the process of printing layer by layer.

As shown in fig. 2-4, a first locking member 2 is disposed on a side wall of the forming cylinder 1, and a second locking member 6 is correspondingly disposed on the positioning plate 5, wherein the second locking member 6 can be locked with the first locking member 2 to fix the forming cylinder 1 and the positioning plate 5. Alternatively, the first locking member 2 is an L-shaped plate structure, and one side of the L-shaped plate structure is fixed to the side wall of the forming cylinder 1, and the other side is parallel to the bottom plane of the forming cylinder 1, and an open slot 21 is formed on the side. The second locking member 6 includes a mounting block 61 rotatably disposed on the positioning plate 5, a cam handle 62 mounted on the mounting block 61, the cam handle 62 can rotate along with the mounting block 61, and the locking rod of the cam handle 62 can rotate to be embedded in the opening groove 21, and then the handle of the cam handle 62 is rotated to lock the first locking member 2.

Preferably, the first locking member 2 may be provided in two, and one first locking member 2 is symmetrically provided on each of the opposite side walls of the forming cylinder 1. Correspondingly, two second locking members 6 are symmetrically arranged on the positioning plate 5.

The side wall of the forming cylinder 1 is further provided with a first guide positioning block 3, the positioning plate 5 is provided with a first guide block 7 and a first positioning block 8, the end portion of the first guide block 7 is provided with an inclined plane, the end portion of the first guide positioning block 3 is provided with an inclined plane matched with the inclined plane of the first guide block 7, when the forming cylinder 1 is placed on the positioning plate 5, the inclined plane of the first guide positioning block 3 can be in contact with the inclined plane of the first guide block 7, and therefore the first guide positioning block 3 is guided by the first guide block 7 to move downwards. With the gradual downward movement, the bottom surface of the first guiding and positioning block 3 will abut against the first positioning block 8 and be positioned by the first positioning block 8, and at this time, the relative position of the forming cylinder 1 and the positioning plate 5 is fixed. Preferably, the first guide positioning block 3 may have a rectangular block structure, and the lower end surface thereof is a flat surface to be in contact with the first positioning block 8. The first positioning block 8 is a columnar structure, and the top surface thereof is a plane. Preferably, the first guide positioning blocks 3 may be provided in two, two first guide positioning blocks 3 are provided on two opposite side walls of the forming cylinder 1, and more preferably, the first guide positioning blocks 3 and the first locking member 2 are located on the same side wall of the forming cylinder 1.

Further, in this embodiment, second guide positioning blocks 10 are further disposed on two sides of the forming cylinder 1, a plug hole 101 is disposed in the center of the second guide positioning block 10, a second guide block 11 and a second positioning block 12 are further disposed on the positioning plate 5, wherein an inclined slope is disposed at an end of the second guide block 11, an inclined slope matched with the inclined slope of the second guide block 11 is disposed at an end of the second guide positioning block 10, and when the forming cylinder 1 is placed on the positioning plate 5, the inclined slope of the second guide positioning block 10 contacts the inclined slope of the second guide block 11, so that the second guide positioning block 10 is guided by the second guide block 11 to move downward. With the gradual downward movement, the insertion hole 101 of the second guiding positioning block 10 is sleeved on the second positioning block 12 and positioned by the second positioning block 12, and at this time, the relative position of the forming cylinder 1 and the positioning plate 5 is fixed. That is to say, the position of the molding cylinder 1 mounted on the positioning plate 5 can be fixed by inserting and positioning the second guide positioning block 10 and the second positioning block 12 and by abutting and positioning the first guide positioning block 3 and the first positioning block 8.

Preferably, the second guiding and positioning block 10 may be a rectangular block structure, the insertion hole 101 is opened at a central position of the rectangular block structure, and correspondingly, the second positioning block 12 may be a cylindrical structure, which can be inserted into the insertion hole 101. Preferably, the above-mentioned second guide positioning blocks 10 may be provided in two, and two second guide positioning blocks 10 are provided on opposite sidewalls of the forming cylinder 1, and more preferably, the second guide positioning blocks 10 and the first lock 2 as well as the first guide positioning block 3 may be located on the same sidewall of the forming cylinder 1, and the second guide positioning blocks 10 and the first guide positioning block 3 are located on both sides of the first lock 2.

This embodiment can make forming cylinder 1 be located on locating plate 5 through the cooperation of above-mentioned first guide orientation piece 3 and first locating piece 8, the cooperation of second guide orientation piece 10 and second locating piece 12, rethread first retaining member 2 and the mutual locking of second retaining member 6 afterwards, can be fixed in forming cylinder 1 on locating plate 5.

As shown in fig. 3, in the present embodiment, a limit stop 14 is further disposed on the positioning plate 5, and the limit stop 14 is disposed at an edge of the positioning plate 5, and the edge is located between the two first positioning blocks 8. When the forming cylinder 1 is placed on the positioning plate 5, the side wall of the forming cylinder, which is not provided with the first guiding and positioning block 3, can be attached to the limit stop 14, so that the fixing effect of the forming cylinder 1 is further increased.

Referring to fig. 2, the bottom of the forming cylinder 1 of this embodiment is a piston plate, a plurality of supporting blocks 15 are disposed on the piston plate, the plurality of supporting blocks 15 are disposed along the circumferential direction of the piston plate, and when the forming cylinder 1 is detached from the 3D printing apparatus, the forming cylinder can be supported by the supporting blocks 15.

A locking connection 4 is provided in the central position of the piston plate, which locking connection 4 is intended to be locked in connection with a locking assembly 13. As shown in fig. 4, the locking assembly 13 includes a fixing plate 131, a first fixing block 132, a second fixing block 133, a movable block 134, a screw 135, and an anti-rotation nut 136, wherein the fixing plate 131 is fixedly connected to a piston rod 9 of a piston of the 3D printing apparatus, the first fixing block 132 and the second fixing block 133 are both fixed on the fixing plate 131 and are disposed opposite to each other, the movable block 134 is disposed between the first fixing block 132 and the second fixing block 133 and can slide on the fixing plate 131, the screw 135 is rotatably disposed on the first fixing block 132 and the second fixing block 133, and the screw 135 and the movable block 134 are in threaded connection, and by rotation of the screw 135, the movable block 134 can move axially along the screw 135 to be close to the first fixing block 132 or far from the first fixing block 132, and when the movable block 134 moves in place, the anti-rotation nut 136 locks the screw 135 to prevent the screw 135 from rotating. In this embodiment, when the movable block 134 is close to the first fixed block 132, the movable block 134 and the first fixed block 132 cooperate to clamp and fix the locking connector 4, so as to lock the locking assembly 13 and the locking connector 4, and further realize the connection between the forming cylinder 1 and the piston, so as to facilitate the subsequent 3D printing operation. When the movable block 134 is far away from the first fixed block 132, the locking assembly 13 releases the locking of the locking connector 4, and at the moment, the locking connector 4 can be separated from the locking assembly 13, so that the separation of the forming cylinder 1 and the piston is realized.

It should be noted that the locking assembly 13 is located between the forming cylinder 1 and the positioning plate 5, the piston rod 9 of the piston passes through the positioning plate 5 and is connected to the locking assembly 13, and the piston rod 9 can move up and down relative to the positioning plate 5.

Preferably, the locking connector 4 is provided with an avoiding groove 41, and when the locking assembly 13 is locked to the locking connector 4, the screw 135 is disposed in the avoiding groove 41, that is, the locking connector 4 does not interfere with the screw 135 through the avoiding groove 41.

When the forming cylinder assembly of the embodiment is used, the forming cylinder assembly is firstly moved to the position above the positioning plate 5 through the special trolley, and when the side wall of the forming cylinder assembly touches the limit stop 14, the forming cylinder 1 starts to fall down, the first guide positioning block 3 is guided through the first guide block 7, and the second guide positioning block 10 is guided through the second guide block 11. And then continuously falls, the first guide positioning block 3 is abutted to the first positioning block 8, the second guide positioning block 10 is sleeved on the second positioning block 12 through the insertion hole 101, and then the forming cylinder 1 and the positioning plate 5 can be fixed by locking the second locking piece 6 and the first locking piece 2.

Then the piston rod 9 of the piston passes through the positioning plate 5 to be connected to the locking assembly 13, and the locking assembly 13 locks the locking connecting piece 4 with the first fixed block 132 through the movable block 134, namely, the connection between the forming cylinder 1 and the piston is realized. Then, 3D printing operation can be carried out, and the piston can drive the forming cylinder 1 to lift.

This embodiment still provides a 3D printing device, and it includes foretell forming cylinder subassembly, can be so that the easy dismounting of piston rod 9 and piston plate, at the printing in-process, can guarantee the planar decline precision of shaping, guarantees the planar stability of shaping simultaneously, can not cause the pollution to 3D printing device's real empty room moreover, has guaranteed the normal clear of printing.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A molding cylinder assembly, comprising:

the device comprises a forming cylinder (1), wherein a first locking piece (2) and a first guide positioning block (3) are arranged on the side wall of the forming cylinder (1), a piston plate is arranged at the bottom of the forming cylinder (1), and a locking connecting piece (4) is arranged on the piston plate;

the positioning plate (5) is provided with a second locking part (6), a first guide block (7) and a first positioning block (8), the second locking part (6) can be locked with the first locking part (2), the first guide positioning block (3) can be guided by the first guide block (7) and abutted against the first positioning block (8), and a piston rod (9) of a piston of the 3D printing device is slidably arranged in the positioning plate (5);

a locking assembly (13) connected to the piston rod (9), and the locking assembly (13) can be locked to the locking connection (4).

2. The forming cylinder assembly according to claim 1, characterized in that a second guide positioning block (10) is further provided on each side of the forming cylinder (1), a second guide block (11) and a second positioning block (12) are further provided on the positioning plate (5), and the second guide positioning block (10) can be guided by the second guide block (11) and is sleeved on the second positioning block (12).

3. The molding cylinder assembly according to claim 2, wherein a plug hole (101) is formed in the center of the second guiding and positioning block (10), and the second positioning block (12) is a columnar structure which can be plugged into the plug hole (101).

4. The forming cylinder assembly according to any one of claims 1-3, characterized in that the first locking member (2) is provided with an open slot (21), and the second locking member (6) comprises a mounting block (61) rotatably disposed on the positioning plate (5), and a cam handle (62) mounted on the mounting block (61), wherein the cam handle (62) can rotate with the mounting block (61) to be embedded in the open slot (21) and can lock the first locking member (2).

5. The forming cylinder assembly according to claim 1, characterized in that the locking assembly (13) comprises a fixed plate (131) fixedly connected with the piston rod (9), a first fixed block (132) and a second fixed block (133) fixed on the fixed plate (131) and arranged oppositely, a movable block (134) positioned between the first fixed block (132) and the second fixed block (133), a screw rod (135) rotatably arranged on the first fixed block (132) and the second fixed block (133), and an anti-rotation nut (136) sleeved on the screw rod (135), wherein the screw rod (135) is connected with the movable block (134) in a threaded manner, the movable block (134) can move towards the first fixed block (132) under the rotation action of the screw rod (135), so as to be matched with the first fixing block (132) to lock the locking connecting piece (4).

6. The forming cylinder assembly according to claim 5, characterized in that the locking connector (4) is provided with a relief groove (41), and when the locking assembly (13) is locked to the locking connector (4), the screw (135) is placed in the relief groove (41).

7. The forming cylinder assembly according to claim 1, characterized in that the positioning plate (5) is further provided with a limit stop (14), and the side wall of the forming cylinder (1) can be abutted against the limit stop (14).

8. A forming cylinder assembly according to claim 1, characterized in that there are two first locking members (2) and two first guide positioning blocks (3), and that there are two first locking members (2) and two first guide positioning blocks (3) symmetrically arranged on both side walls of the forming cylinder (1).

9. Cylinder assembly according to claim 1, wherein the piston plate is provided with support blocks (15).

10. A 3D printing apparatus comprising the forming cylinder assembly of any one of claims 1-9.