Desktop-level five-axis linkage 3D printer

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a desktop-level five-axis linkage 3D printer which comprises a support, a supporting frame is arranged at the top of the support, the supporting frame is connected with a two-dimensional positioning unit capable of moving in an XY plane, a spray head is arranged on the two-dimensional positioning unit, a nozzle of the spray head faces downwards, and the nozzle of the spray head faces downwards. The 3D printer further comprises a printing base and a printing hot bed, the printing hot bed is connected to the printing base through a fixed bracket, the fixed bracket is connected with the printing hot bed through a swing bracket, and the fixed bracket is connected with a first driving unit used for driving the swing bracket to swing in the ZY plane. According to the three-dimensional printer, the problems that a traditional three-dimensional printer is low in printing speed, low in printing precision and large in material consumption are effectively solved, the mechanism is simple, installation is convenient and fast, and meanwhile the printing precision is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a desktop five-axis linkage 3D printer. Background Art

[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] 3D printing is usually achieved by using digital technology material printers. It is used to make models in the fields of mold manufacturing, industrial design, etc., and is gradually used for the direct manufacturing of some products. There are already parts printed using this technology. The existing five-axis printers are large in size and take up more space, resulting in high costs, slow printing speeds and low printing accuracy.

[0004] Therefore, a desktop five-axis linkage 3D printer is proposed. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a desktop five-axis linkage 3D printer, which can improve the speed and precision of 3D printing and save printing costs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A desktop five-axis linkage 3D printer, comprising:

[0008] The bracket has a support frame on the top, the support frame is connected to a two-dimensional positioning unit capable of moving in the XY plane, the two-dimensional positioning unit is provided with a nozzle, and the nozzle of the nozzle faces downward, and also includes:

[0009] A printing base is connected to the support frame and can move vertically up and down on the support frame through a lifting assembly;

[0010] A printing hot bed is located below the nozzle, the printing hot bed is connected to the printing base through a fixed bracket, the fixed bracket is connected to the printing hot bed through a swing bracket, and the fixed bracket is connected to a first driving unit for driving the swing bracket to swing in a ZY plane, and the swing bracket is vertically connected to a second driving unit for driving the printing hot bed to rotate around its own axis, and the output shaft end of the second driving unit faces downward.

[0011] Preferably, the fixed bracket is a U-shaped structure, the swing bracket is connected to the fixed bracket through a bearing, and the bearing is connected to a first shaft wheel, and the printing hot bed is connected to a second shaft wheel through a slewing support.

[0012] Preferably, the first driving unit is a first motor, and an output shaft end of the first motor is connected to a first shaft wheel via a first belt.

[0013] Preferably, the second driving unit is a second motor, and the output shaft end of the second motor is connected to the second shaft wheel through a second belt.

[0014] Preferably, the lifting assembly comprises:

[0015] A third motor is connected to the bottom of the bracket, and a drive shaft thereof is connected to a vertically arranged screw rod;

[0016] The printing base is connected to the movable nut on the screw rod through a fixer.

[0017] Preferably, the outer side of the screw is connected with an optical axis.

[0018] Preferably, the two-dimensional positioning unit is a Corexy structure.

[0019] Preferably, a rubber seat is provided at the bottom of the bracket.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model is constructed by arranging a fixed bracket and a swing bracket on a support frame. Through the mutual cooperation of the fixed bracket and the swing bracket and the cooperation with the Corexy structure, the printer has a higher degree of freedom, which greatly improves the printing speed and printing accuracy.

[0022] 2. The utility model arranges a printing base on the support frame, and the fixed bracket and the swing bracket on the printing base cooperate with each other, so that the overall structure is simple and the volume is small, which improves the space utilization and saves the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is the front view of the utility model.

[0025] Figure 3 It is a top view of the utility model.

[0026] Figure 4 It is a structural schematic diagram of the utility model from another perspective.

[0027] Figure 5 It is a schematic diagram of the printing base, the fixed bracket and the swing bracket of the utility model.

[0028] Markings in the figure: 1. bracket; 2. rubber seat; 3. support frame; 31. printing base; 32. fixer; 33. fixed bracket; 34. first drive unit; 341. first belt; 35. swing bracket; 351. bearing; 352. first shaft wheel; 36. printing hot bed; 361. slewing support; 362. second shaft wheel; 37. second drive unit; 371. second belt; 38. lifting assembly; 381. third motor; 382. screw; 383. optical axis; 384. moving nut; 4. two-dimensional positioning unit; 41. fourth motor; 42. synchronous wheel; 43. third belt; 44. Y-axis moving assembly; 45. X-axis moving assembly; 5. nozzle. DETAILED DESCRIPTION

[0029] Reference Figures 1 to 5 , a desktop five-axis linkage 3D printer, comprising:

[0030] The bracket 1 has a support frame 3 on the top thereof, and the support frame 3 is connected to a two-dimensional positioning unit 4 capable of moving in the XY plane. A nozzle 5 is provided on the two-dimensional positioning unit 4, and the nozzle of the nozzle 5 faces downward, and the nozzle of the nozzle 5 faces downward so that the nozzle 5 can cooperate with the printing hot bed 36 to spray the printing material onto the printing hot bed 36, thereby printing, and further includes:

[0031] The printing base 31 is connected to the support frame 3 and can move vertically up and down on the support frame 3 through the lifting assembly 38. The lifting assembly 38 drives the printing base 31 to move up and down and cooperates with the nozzle 5 to print;

[0032] The printing hot bed 36 is located below the nozzle 5. The printing hot bed 36 is used to carry the printed object and cooperates with the nozzle 5 during the printing process, so as to improve the printing accuracy. The printing hot bed 36 is connected to the printing base 31 through a fixed bracket 33. The fixed bracket 33 is connected to the printing hot bed 36 through a swing bracket 35, and the fixed bracket 33 is connected to a first driving unit 34 for driving the swing bracket 35 to swing in the ZY plane. The fixed bracket 33 carries the swing bracket 35 and the printing hot bed 36 on the swing bracket 35, so that the swing bracket 35 can swing on the fixed bracket 33. The swing bracket 35 is vertically connected to a second driving unit 37 for driving the printing hot bed 36 to rotate around its own axis, and the output shaft end of the second driving unit 37 faces downward.

[0033] The fixed bracket 33 is a U-shaped structure, which can greatly reduce its volume and improve the utilization of space. At the same time, it makes the swing bracket 35 on the fixed bracket 33 rotate more flexibly; the swing bracket 35 is connected to the fixed bracket 33 through a bearing 351, and the bearing 351 is connected to a first shaft wheel 352, and the printing hot bed 36 is connected to a second shaft wheel 362 through a slewing support 361.

[0034] The first driving unit 34 is a first motor, the output shaft end of the first motor is connected to the first shaft wheel 352 through a first belt 341, and the first motor is used to drive the swing bracket 35 to swing.

[0035] The second driving unit 37 is a second motor, and the output shaft end of the second motor is connected to the second shaft wheel 362 through a second belt 371. The second motor is used to drive the printing hot bed 36 to rotate.

[0036] The lifting assembly 38 comprises: a third motor 381 connected to the bottom of the bracket 1, whose driving shaft is connected to a vertically arranged screw rod 382;

[0037] The printing base 31 is connected to the movable nut 384 on the screw 382 through the fixture 32; the outer side of the screw 382 is connected to the optical axis 383; the screw 382 is driven to rotate by the rotation of the third motor 381, and the movable nut 384 on the screw 382 will move up and down during the rotation of the screw 382, ​​thereby driving the printing hot bed 36 on the printing base 31 to move up and down through the fixture 32, and performing 3D printing.

[0038] The two-dimensional positioning unit 4 is a Corexy structure, which is driven by a fourth motor 41 connected to the top plate 1, thereby realizing two-dimensional plane movement of the nozzle 5 in the X-axis direction and the Y-axis direction. The fourth motor 41 rotates to drive the synchronous wheel 42 to rotate. The rotation of the synchronous wheel 42 will drive the X-axis moving component 45 and the Y-axis moving component 44 to move simultaneously through the third belt 43, and drive the nozzle 5 to make two-dimensional plane movement in both the X-axis direction and the Y-axis direction, thereby performing 3D printing.

[0039] The bottom plate 2 is connected with a rubber seat 21 for shock absorption. The rubber seat 21 can not only absorb shock to the printer, but also support the printer.

[0040] The working principle is: homing work and printing work, and the specific steps are as follows: first, start the first driving unit 34, the first motor on the first driving unit 34 rotates, and the first motor transmits power to the first shaft wheel 352 through the first belt 341, and the first shaft wheel 352 will drive the swing bracket 35 to rotate, and swing until it touches the limit switch, so that the plane of the swing bracket 35 is parallel to the horizontal plane, so that the U axis is successfully homed; then the second motor on the second driving unit 37 is started, and the second motor drives the second shaft wheel 362 to rotate through the second belt 371, and the second shaft wheel 362 transmits power to the printing hot bed 36, so that the printing hot bed 36 rotates, and rotates until it touches the limit switch, so that the printing hot bed 36 is parallel to the horizontal plane, so that the V axis is successfully homed;

[0041] Then, the third motor 381 rotates and transmits power to the screw 382, ​​so that the screw 382 rotates, and the moving nut 384 on the screw 382 moves upward, driving the printing base 31 to move upward until it contacts the limit switch, so that the printing base 31 moves to the plane of the first printing layer, thereby successfully returning the Z axis to its original position;

[0042] Then, the fourth motor 41 on the two-dimensional positioning unit 4 is started, and drives the synchronous wheel 42 to rotate, and the synchronous wheel 42 transmits power to the X-axis moving assembly 45 and the Y-axis moving assembly 44 through the third belt 43, and drives the X-axis moving assembly 45 and the Y-axis moving assembly 44 to move synchronously to their respective limit switches, so that the X-axis and Y-axis return to their positions successfully;

[0043] Finally, the fourth motor 41 drives the X-axis moving assembly 45 and the Y-axis moving assembly 44 to move to the center position just above the printing hot bed 36 and start printing.

[0044] The above description of the disclosed embodiments enables professionals in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the examples shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A desktop five-axis linkage 3D printer, characterized in that: include: A support frame (1) is provided on the top of which a support frame (3) is connected to a two-dimensional positioning unit (4) capable of moving in an XY plane, a nozzle (5) is provided on the two-dimensional positioning unit (4), and a nozzle of the nozzle (5) faces downward, and further comprises: A printing base (31) is connected to the support frame (3) and is capable of moving vertically up and down on the support frame (3) via a lifting assembly (38); A printing hot bed (36) is located below the nozzle (5), the printing hot bed (36) is connected to the printing base (31) via a fixed bracket (33), the fixed bracket (33) is connected to the printing hot bed (36) via a swing bracket (35), and the fixed bracket (33) is connected to a first driving unit (34) for driving the swing bracket (35) to swing in a ZY plane, and the swing bracket (35) is vertically connected to a second driving unit (37) for driving the printing hot bed (36) to rotate around its own axis, and the output shaft end of the second driving unit (37) faces downward.

2. A desktop five-axis linkage 3D printer according to claim 1, characterized in that: The fixed bracket (33) is a U-shaped structure, the swing bracket (35) is connected to the fixed bracket (33) via a bearing (351), and the bearing (351) is connected to a first shaft wheel (352), and the printing hot bed (36) is connected to a second shaft wheel (362) via a slewing support (361).

3. A desktop five-axis linkage 3D printer according to claim 2, characterized in that: The first driving unit (34) is a first motor, and the output shaft end of the first motor is connected to the first shaft wheel (352) via a first belt (341).

4. A desktop five-axis linkage 3D printer according to claim 2, characterized in that: The second driving unit (37) is a second motor, and the output shaft end of the second motor is connected to the second shaft wheel (362) via a second belt (371).

5. A desktop five-axis linkage 3D printer according to claim 1, characterized in that: The lifting assembly (38) comprises: A third motor (381) is connected to the bottom of the bracket (1), and a drive shaft thereof is connected to a vertically arranged screw rod (382); The printing base (31) is connected to the movable nut (384) on the screw rod (382) via a fixer (32).

6. A desktop five-axis linkage 3D printer according to claim 5, characterized in that: The outer side of the screw rod (382) is connected to an optical axis (383).

7. A desktop five-axis linkage 3D printer according to claim 5, characterized in that: The two-dimensional positioning unit (4) is a Corexy structure.

8. The desktop five-axis linkage 3D printer according to claim 5, characterized in that: A rubber seat (2) is provided at the bottom of the bracket (1).

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