Automatic material changing device of 3D printer

Abstract

The utility model relates to an automatic reloading device of 3D printer, including feeding subassembly, power subassembly and clamping subassembly, feeding subassembly includes holding part and first drive cylinder, the holding part is equipped with the charging tray, the first drive cylinder is connected with the push block and drives the push block to go in and out of holding part, power subassembly includes second drive cylinder and clamping jaw, the second drive cylinder is equipped with the clamping jaw. The clamping assembly comprises a first positioning seat, a second positioning seat, a third driving cylinder and a rotating mechanism, the third driving cylinder is connected with the first positioning seat and drives the first positioning seat to move horizontally, the first positioning seat and the second positioning seat are oppositely arranged to form a containing cavity, and the rotating mechanism is connected with the first positioning seat and drives the second positioning seat to move horizontally. The containing cavity is located below the clamping jaw, and the second positioning seat is connected with the rotating mechanism. According to the automatic material changing device of the 3D printer, the material trays can be stored through the containing part, the number of the material trays can be adjusted by adjusting the height of the containing part, use is more flexible, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to an automatic material changing device for a 3D printer. Background Art

[0002] 3D printers require a feed roll during printing. A feed roll is a rolled container containing plastic filament or wire. This filament is the material used by 3D printers to construct three-dimensional objects. Common materials include PLA (polylactic acid), ABS (acrylonitrile butadiene styrene), and PETG (polyethylene terephthalate). For example, patent publication number CN203293543U discloses an automatic feed reloading device for a 3D printer. When the filament on the active feed roll runs out, the controller directly sends a command to the turntable, which drives the stepper motor, causing a new feed roll to rotate above the feed tube and then stop. This technical solution uses the turntable to adjust the feed roll position, allowing the new feed roll to continue to be used. However, in this technical solution, the feed rolls must be pre-installed on the turntable. The more feed rolls there are, the larger the turntable size, the larger the overall device size, and the inconvenient maintenance. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides an automatic material changing device for a 3D printer, which can facilitate the transportation and replacement of material trays and is convenient for maintenance.

[0004] The specific technical solution is as follows: An automatic material changing device for a 3D printer includes a feeding assembly, a power assembly and a clamping assembly, the feeding assembly includes a accommodating portion and a first driving cylinder, a material tray is provided in the accommodating portion, the first driving cylinder is connected to the push block, driving the push block in and out of the accommodating portion, the power assembly includes a second driving cylinder and a clamping claw, the second driving cylinder is connected to the clamping claw, driving the clamping claw to move up and down, the clamping claw is located on the side of the accommodating portion, the clamping assembly includes a first positioning seat, a second positioning seat, a third driving cylinder and a rotating mechanism, the third driving cylinder is connected to the first positioning seat, driving the first positioning seat to move horizontally, the first and second positioning seats are relatively arranged to form a receiving cavity, the receiving cavity is located below the clamping claw, and the second positioning seat is connected to the rotating mechanism.

[0005] In some embodiments, the accommodating portion has an accommodating cavity, which is vertically arranged, and the material trays are stacked in the accommodating cavity. A through hole is provided at the bottom of the accommodating cavity, and the push block is arranged corresponding to the through hole.

[0006] In some embodiments, the first driving cylinder is fixed on a side wall of the accommodating portion and is arranged vertically.

[0007] In some embodiments, the first positioning seat is disposed on a guide rail.

[0008] In some embodiments, the first positioning seat has a first positioning portion, the second positioning seat has a second positioning portion, and the first positioning portion and the second positioning portion are arranged opposite to each other.

[0009] In some embodiments, the first positioning portion includes a plurality of positioning blocks arranged at intervals and a bottom plate, the positioning blocks are arranged on the bottom plate, and hollow portions are provided between adjacent positioning blocks.

[0010] In some embodiments, the side surface of the positioning block has an arc-shaped surface, and the arc-shaped surface is provided with a protrusion.

[0011] In some embodiments, the positioning block has a planar portion, a guiding arc surface is provided between the planar portion and the arc surface, and the middle portions of several positioning blocks are connected to form a central portion, and a slope portion is provided between the central portion and the planar portion.

[0012] The technical effect of the utility model: the automatic material changing device of the 3D printer of the utility model can store material trays through the accommodating part, and the number of material trays can be adjusted by adjusting the height of the accommodating part, which is more flexible to use and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of an automatic material changing device for a 3D printer according to an embodiment of the present utility model.

[0014] Figure 2 This is another schematic diagram of an automatic material changing device for a 3D printer according to an embodiment of the present utility model.

[0015] Figure 3 It is a schematic diagram of the first positioning portion of an embodiment of the present utility model.

[0016] Figure 4 It is a schematic diagram of a material tray according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The essential features and advantages of the present invention are further described below with reference to examples, but the present invention is not limited to the examples listed.

[0018] like Figures 1 to 4As shown, an automatic material changing device for a 3D printer of this embodiment includes a feeding assembly 1, a power assembly 2, and a clamping assembly 3. The feeding assembly 1 includes a housing 12 and a first drive cylinder 11. A material tray 10 is disposed in the housing 12. The first drive cylinder 11 is connected to a push block 13, driving the push block 13 in and out of the housing 12, thereby pushing the material tray 10 out of the housing 12. The power assembly 2 includes a second drive cylinder 22 and a clamping jaw 21. The second drive cylinder 22 is connected to the clamping jaw 21, driving the clamping jaw 21 to move up and down. The clamping jaw 21 is located on the side of the housing 12. The clamping jaw 21 can adopt an existing clamping jaw device such as a cylinder clamping jaw. The clamping jaw 21 clamps the pushed-out material tray 10 and moves it toward the clamping assembly 3 via the second drive cylinder 22. The clamping assembly 3 includes a first positioning seat 31, a second positioning seat 32, a third driving cylinder 33 and a rotating mechanism 34. The third driving cylinder 33 is connected to the first positioning seat 31 to drive the first positioning seat 31 to move horizontally. The first and second positioning seats are relatively arranged to form a receiving chamber 35. The receiving chamber 35 is located below the clamping claw 21, so that the material tray 10 can be fed into the receiving chamber 35. The second positioning seat 32 is connected to the rotating mechanism 34, and the rotating mechanism drives the material tray 10 to rotate and feed. In the above technical solution, the material tray 10 is pushed out of the accommodating portion 12 by the pushing block 13, and the material tray 10 is clamped by the clamping claw 21 and sent to the receiving chamber 35. The material tray 10 is clamped in the receiving chamber 35 by the movement of the first positioning seat 31, and the clamping claw is released; the material tray 10 is driven to rotate by the rotating mechanism 34. When the material tray 10 is used up, the used material tray is released by the first positioning seat 31, causing it to fall, and then a new material tray is fed by the clamping claw. Through the above technical solution, the material trays can be automatically replaced, the material trays can be stored through the accommodating part, and the number of material trays can be adjusted by adjusting the height of the accommodating part, which makes it more flexible to use and convenient to maintain.

[0019] In this embodiment, the accommodating portion 12 has a vertically disposed accommodating cavity 121, in which the trays 10 are stacked. A through-hole 122 is provided at the bottom of the accommodating cavity 121, and the push block 13 is disposed corresponding to the through-hole 122. When the push block 13 enters the accommodating cavity 121 through the through-hole 122, it pushes the trays 10 within the accommodating cavity 121 out the other side. The first drive cylinder 11 is fixed to the sidewall of the accommodating portion 12 and disposed vertically, thereby facilitating its securement. The first positioning seat 31 is disposed on a guide rail 36, enabling linear motion along the guide rail 36. The first positioning seat 31 has a first positioning portion 4, and the second positioning seat 32 has a second positioning portion 5. The first positioning portion 4 and the second positioning portion 5 are arranged opposite each other. The first positioning portion 4 can move with the first positioning seat 31. The first positioning portion 4 presses the material tray 10 between the first and second positioning portions from one side. Then, the second positioning portion 5 rotates, driving the material tray 10 and the first positioning portion 4 to rotate simultaneously. The first positioning portion 4 is mounted on a rotating shaft 7, and the second positioning portion 5 is connected to the rotating mechanism 3 via a connecting shaft 6. The rotating mechanism drives the connecting shaft 6 to rotate. The rotating mechanism can use an existing power device such as a motor.

[0020] In this embodiment, the first positioning portion 4 includes a plurality of spaced positioning blocks 41 and a base plate 42. The positioning blocks 41 are disposed on the base plate 42, and hollow portions 43 are provided between adjacent positioning blocks 41. The positioning blocks 41 are inserted into the holes 101 of the tray 10 to position the tray. The side of the positioning block 41 has an arcuate surface 411, and the arcuate surface 411 is provided with a protrusion 412. The protrusion 412 can enhance the connection stability between the first positioning portion 4 and the tray 10. The positioning block 41 can be made of rubber material. The positioning block 41 has a flat surface 413, and a guide arc surface 414 is provided between the flat surface 413 and the arcuate surface 411. The middle portions of the plurality of positioning blocks 41 are connected to form a central portion 415, and an inclined portion 416 is provided between the central portion 415 and the flat surface 413. The above technical solution can facilitate the deformation of the positioning block 41 and its insertion into the hole 101.

[0021] The automatic material changing device of a 3D printer of this embodiment can store material trays through a receiving portion, and the number of material trays can be adjusted by adjusting the height of the receiving portion, which is more flexible to use and convenient to maintain.

[0022] It should be noted that the above preferred embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. An automatic material changing device for a 3D printer, characterized in that: It includes a feeding assembly, a power assembly and a clamping assembly, the feeding assembly includes a accommodating part and a first driving cylinder, a material tray is provided in the accommodating part, the first driving cylinder is connected to the push block, driving the push block in and out of the accommodating part, the power assembly includes a second driving cylinder and a clamping claw, the second driving cylinder is connected to the clamping claw, driving the clamping claw to move up and down, the clamping claw is located on the side of the accommodating part, the clamping assembly includes a first positioning seat, a second positioning seat, a third driving cylinder and a rotating mechanism, the third driving cylinder is connected to the first positioning seat, driving the first positioning seat to move horizontally, the first and second positioning seats are relatively arranged to form a receiving cavity, the receiving cavity is located below the clamping claw, and the second positioning seat is connected to the rotating mechanism.

2. The automatic material changing device of the 3D printer according to claim 1, characterized in that: The accommodating portion has an accommodating cavity, which is vertically arranged. The material trays are stacked in the accommodating cavity. A through hole is provided at the bottom of the accommodating cavity, and the push block is arranged corresponding to the through hole.

3. The automatic material changing device of the 3D printer according to claim 2, characterized in that: The first driving cylinder is fixed on the side wall of the accommodating portion and is arranged vertically.

4. The automatic material changing device of the 3D printer according to claim 1, characterized in that: The first positioning seat is arranged on the guide rail.

5. The automatic material changing device of a 3D printer according to claim 1, characterized in that: The first positioning seat has a first positioning portion, the second positioning seat has a second positioning portion, and the first positioning portion and the second positioning portion are arranged opposite to each other.

6. The automatic material changing device of the 3D printer according to claim 5, characterized in that: The first positioning portion includes a plurality of positioning blocks arranged at intervals and a bottom plate. The positioning blocks are arranged on the bottom plate, and hollow portions are provided between adjacent positioning blocks.

7. The automatic material changing device of a 3D printer according to claim 6, characterized in that: The side surface of the positioning block has an arc surface, and the arc surface is provided with a convex block.

8. The automatic material changing device of the 3D printer according to claim 7, characterized in that: The positioning block has a plane portion, a guide arc surface is provided between the plane portion and the arc surface, and the middle portions of the positioning blocks are connected to form a central portion, and a slope portion is provided between the central portion and the plane portion.

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