Multi-nozzle calibration mechanism of 3D printer

Abstract

The multi-nozzle calibration mechanism of the 3D printer comprises a bottom plate and three nozzles arranged on the bottom plate, and the three nozzles are generally distributed in a triangular shape; wherein the first nozzle located at one end of the delta-shaped bottom is provided with a rotary adjusting device, and the second nozzle located at the other end of the delta-shaped bottom and the third nozzle located at the top end of the delta-shaped bottom are each provided with a rotary adjusting device and a displacement adjusting device. The spray heads of the 3D printer are distributed in the shape like the Chinese character'pin ', the reference position of the first spray head is determined through the rotary adjusting device, and then the second spray head and the third spray head are subjected to rotary adjustment and displacement adjustment through the rotary adjusting device and the displacement adjusting device until the three spray heads are kept parallel in the Y-axis direction. And a certain distance is kept, so that the printing precision is ensured, the structure is simple, and the operation and the maintenance are very convenient.

Description

Technical Field

[0001] This utility model relates to the field of printer equipment, specifically to a nozzle calibration mechanism for a 3D printer. Background Technology

[0002] 3D printing technology is a technique for creating solid objects by layering materials, also known as additive manufacturing (AM). The basic principle of 3D printing is to create a 3D model, divide the designed model into several layers, and then print each layer until a complete object is formed. Wax-spray 3D printers are a type of additive manufacturing equipment. They use blue wax as the model material and white wax as the support material. High-temperature heated wax is sprayed onto the printing platform, and the model is built by stacking layers. Due to the advantages of high precision and smooth surface of wax-spray 3D printed models, wax-spray 3D printers are widely used in the jewelry, aerospace, and engine manufacturing industries. The printing materials used in wax-spray 3D printers are white wax and blue wax. The wax is contained in a container, which is then inserted into an ink supply assembly. The blue wax in the container flows into the ink supply assembly, is heated at high temperature, and flows into the nozzle. The nozzle sprays the wax layer by layer onto the printing panel to build the 3D model.

[0003] In the prior art, patent document CN211390163U proposes a multi-nozzle calibration mechanism for a 3D printer, specifically disclosing that multiple nozzle bodies are arranged on a nozzle base plate, and each nozzle body has a mounting port on the nozzle base plate. Each mounting port is equipped with a positioning device for positioning the nozzle body and an adjustment device for adjusting the nozzle body. The nozzle body has a first nozzle mounting seat and a second nozzle mounting seat. The first nozzle mounting seat matches the positioning hole, and the second nozzle mounting seat matches the limiting hole. The nozzle body can be adjusted to rotate around the positioning hole through the adjustment device. However, controlling multiple nozzle bodies with only a unified adjustment device cannot achieve differentiated adjustment of the nozzles, and its adjustment device structure is relatively complex, making installation and maintenance inconvenient. Utility Model Content

[0004] To address the above problems, this utility model provides a multi-nozzle calibration mechanism for 3D printers.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model discloses a multi-nozzle calibration mechanism for a 3D printer, comprising: a base plate and three nozzles disposed on the base plate, the three nozzles being generally arranged in a triangular shape; wherein, the first nozzle located at one end of the bottom of the triangular shape is provided with a rotation adjustment device, the second nozzle located at the other end of the bottom of the triangular shape, and the third nozzle located at the top of the triangular shape are all provided with a rotation adjustment device and a displacement adjustment device.

[0007] As a further limitation of this utility model, the rotation adjustment device includes a connecting seat and an adjusting screw. The connecting seat is located at one end of the nozzle, and the adjusting screw is located at the other end of the nozzle. Driving the adjusting screw forward and backward causes the nozzle to rotate in both directions around the connecting seat.

[0008] Preferably, the adjusting screw includes: a connecting section at the front end for connecting the nozzle; a rotating handle at the rear end for driving the adjusting screw to rotate; and a threaded section connecting the connecting section and the rotating handle, wherein the threaded section is disposed in a screw seat on the base plate for threaded connection.

[0009] Preferably, the connecting section of the adjusting screw is a connecting block, which cooperates with the slot on the nozzle to allow for a detachable connection between the adjusting screw and the nozzle.

[0010] Preferably, the connecting section of the adjusting screw is a push rod, which abuts against the protrusion on the nozzle.

[0011] Preferably, the displacement adjusting device is a displacement screw, which includes: a fixed base mounted on the base plate and located outside the second nozzle; a displacement screw passing through a screw hole in the fixed base; wherein, the connecting part at the front end of the displacement screw cooperates with the diamond-shaped groove on the second nozzle; the knob at the rear end of the displacement screw is used to drive the displacement screw to screw in or out; and the threaded part in the middle of the displacement screw is used to connect with the screw hole in the fixed base.

[0012] Preferably, the displacement adjustment device on the third nozzle is the same as the displacement adjustment device on the second nozzle, and both displacement adjustment devices are located at the middle of the outer side of the second nozzle and the third nozzle.

[0013] The multi-nozzle calibration mechanism for a 3D printer that implements this utility model has the following beneficial technical effects:

[0014] The nozzles of this 3D printer are arranged in a triangular pattern. The reference position of the first nozzle is determined by a rotation adjustment device. Then, the second and third nozzles are rotated and displaced by a rotation adjustment device and a displacement adjustment device. The nozzles are adjusted in a differentiated adjustment structure until the three nozzles are parallel in the Y-axis direction and maintain a certain distance, thereby ensuring printing accuracy. The structure is simple and the operation and maintenance are very convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the multi-nozzle calibration mechanism for 3D printers of this utility model;

[0017] Figure 2 This is another perspective structural schematic diagram of Embodiment 1 of the multi-nozzle calibration mechanism for 3D printers of this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of the 3D printer multi-nozzle calibration mechanism of this utility model;

[0019] Figure 4 yes Figure 3 Enlarged schematic diagram of part A;

[0020] Figure 5 yes Figure 3 Enlarged diagram of part B;

[0021] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the multi-nozzle calibration mechanism for 3D printers of this utility model;

[0022] Figure 7 yes Figure 6 Enlarged diagram of section C.

[0023] Reference numerals: Base plate 1; First nozzle 2a; Second nozzle 2b; Third nozzle 2c; Slot 21; Protrusion 22; Diamond groove 23; Connecting seat 31; Adjusting screw 32; Connecting section 321; Connecting block 321a; Top rod 321b; Rotating handle 322; Threaded section 323; Screw seat 324; Displacement screw 42; Connecting part 421; Knob part 422; Threaded part 423; Fixing seat 424. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1 , Figure 2 and Figure 3 A multi-nozzle calibration mechanism for a 3D printer includes a base plate 1 and three nozzles mounted on the base plate 1, the three nozzles being arranged in a generally triangular shape; wherein, the first nozzle 2a located at one end of the bottom of the triangular shape is provided with a rotation adjustment device, the second nozzle 2b located at the other end of the bottom of the triangular shape, and the third nozzle 2c located at the top of the triangular shape are all provided with rotation adjustment devices and displacement adjustment devices.

[0027] The rotation adjustment device includes a connecting seat 31 and an adjusting screw 32. The connecting seat 31 is located at one end of each nozzle and is used to rotatably connect the nozzle to the base plate 1. The adjusting screw 32 is located at the other end of each nozzle. When the adjusting screw 32 is driven forward or backward, the nozzle can rotate around the connecting seat 31 in the forward or reverse direction. Specifically, on the first nozzle 2a, the adjusting screw 32 is provided at the end away from the second nozzle 2b, and the connecting seat 31 is provided at the end closer to the second nozzle 2b. For the first nozzle 2a, the adjusting screw 32 and the connecting seat 31 are located on opposite sides of the first nozzle 2a (i.e., misaligned). On the second nozzle 2b, the adjusting screw 32 is provided at the end closer to the first nozzle 2a, and the connecting seat 31 is provided at the end away from the first nozzle 2a. On the third nozzle 2c, the adjusting screw 32 is provided at the end closer to the first nozzle 2a, and the connecting seat 31 is provided at the end closer to the second nozzle 2b. For the second nozzle 2b and the third nozzle 2c, the adjusting screw 32 and the connecting seat 31 are both located on the diagonal of the nozzle (i.e., misaligned).

[0028] The displacement adjustment device on the third nozzle 2c is the same as the displacement adjustment device on the second nozzle 2b, and both displacement adjustment devices are located at the middle of the outer side of the third nozzle 2c and the second nozzle 2b.

[0029] like Figure 3 and Figure 4 As shown, each of the three nozzles has a rotary adjustment device. The adjusting screw 32 of the rotary adjustment device includes: a connecting section 321 at the front end, a rotary handle 322 at the rear end, and a threaded section 323 connecting the connecting section 321 and the rotary handle 322. The connecting section 321 at the front end is a connecting block 321a, which cooperates with the slot 21 on the nozzle to detachably connect the adjusting screw 32 to the nozzle. The threaded section 323 of the adjusting screw 32 is located in the screw seat 324 on the base plate 1 for threaded connection between the two. When the rotary handle 322 rotates forward and backward, the threaded section 323 of the adjusting screw 32 moves back and forth relative to the screw seat 324, causing one end of the nozzle to rotate relative to the connecting seat 31 on the other end of the nozzle, thereby realizing the angle adjustment of the nozzle.

[0030] like Figure 3 and Figure 5 As shown, both the third nozzle 2c and the second nozzle 2b have displacement adjustment devices at the middle of their outer sides. Taking the displacement adjustment device on the third nozzle 2c as an example, its structure is explained as follows: the displacement adjustment device is a displacement screw 42, which passes through the screw hole of the fixing seat 424. The fixing seat 424 is mounted on the base plate 1. The connecting part 421 at the front end of the displacement screw 42 is connected to the diamond groove 23 on the third nozzle 2c. The knob part 422 at the rear end of the displacement screw 42 is used to drive the displacement screw 42 to rotate relative to the fixing seat 424. The threaded part 423 in the middle of the displacement screw 42 is used to connect with the screw hole of the fixing seat 424. When the driving knob part 422 rotates forward and backward, the threaded part 423 of the displacement screw 42 moves back and forth relative to the fixing seat 424, causing the third nozzle 2c to move along the Y-axis. The displacement operation mode of the displacement adjustment device of the second nozzle 2b is the same as that of the third nozzle 2c, and will not be described again.

[0031] The beneficial technical effects of this embodiment are as follows: the three nozzles of the 3D printer are arranged in a triangular pattern. The reference position of the first nozzle is determined by a rotation adjustment device. Then, the second and third nozzles are rotated and displaced by a rotation adjustment device and a displacement adjustment device. The nozzles are adjusted in a differentiated adjustment structure until the three nozzles are parallel in the Y-axis direction and maintain a certain distance, thereby ensuring printing accuracy.

[0032] Example 2

[0033] Please see Figure 6 and Figure 7 The main difference between the second embodiment and the first embodiment is that the adjusting screw 32 on the second nozzle 2b includes a connecting section 321 at the front end, a rotating handle 322 at the rear end, and a threaded section 323 connecting the connecting section 321 and the rotating handle 322. The connecting section 321 at the front end is a push rod 321b, and the front end of the push rod 321b abuts against the protrusion 22 on the second nozzle 2b. When the rotating handle 322 rotates forward, the threaded section 323 of the adjusting screw 32 moves forward relative to the screw seat 324, causing one end of the nozzle to rotate relative to the connecting seat 31 on the other end of the nozzle, thereby adjusting the rotation angle of the second nozzle 2b.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 3D printer multi-jet calibration mechanism, characterized in that, The utility model relates to a 3D printer multi-nozzle calibration mechanism, including: a base plate (1); three nozzles arranged on the base plate (1) in a substantially triangular shape; wherein the first nozzle (2a) at one end of the base of the triangle is provided with a rotation adjusting device, the second nozzle (2b) at the other end of the base of the triangle and the third nozzle (2c) at the top of the triangle are each provided with a rotation adjusting device and a displacement adjusting device.

2. The 3D printer multi-nozzle calibration mechanism according to claim 1, wherein: the rotation adjusting device comprises a connecting seat (31) and an adjusting screw (32), the connecting seat (31) is located at one end of the nozzle, and the adjusting screw (32) is located at the other end of the nozzle, the adjusting screw (32) is driven to advance and retreat, so that the nozzle rotates forward and backward around the connecting seat (31).

3. The 3D printer multi-jet calibration mechanism of claim 2, wherein, the adjusting screw (32) comprises: a connecting section (321) at the front end for connecting the nozzle; a rotating handle (322) at the rear end for driving the adjusting screw (32) to rotate; and a threaded section (323) connecting the connecting section (321) and the rotating handle (322), the threaded section (323) is arranged in a screw seat (324) on the base plate (1) and is used for threaded connection.

4. The 3D printer multi-nozzle calibration mechanism according to claim 3, wherein: the connecting section (321) of the adjusting screw (32) is a connecting block (321a), the connecting block (321a) is matched with a clamping groove (21) on the nozzle, and the adjusting screw (32) is detachably connected with the nozzle.

5. The 3D printer multi-nozzle calibration mechanism according to claim 3, wherein: the connecting section (321) of the adjusting screw (32) is a jack (321b), and the jack (321b) abuts against a protruding block (22) on the nozzle.

6. The 3D printer multi-jet calibration mechanism of claim 1, wherein, the displacement adjusting device comprises a displacement screw (42); the displacement screw (42) is arranged in a screw hole of a fixing seat (424) on the base plate (1); a connecting part (421) at the front end of the displacement screw (42) is matched with a rhombic groove (23) on the second nozzle (2b); a knob part (422) at the rear end of the displacement screw (42) is used for driving the displacement screw (42) to rotate in or out; a threaded part (423) in the middle of the displacement screw (42) is used for connecting with the screw hole of the fixing seat (424).

7. The 3D printer multi-nozzle calibration mechanism according to claim 6, wherein: the displacement adjusting device on the third nozzle (2c) is the same as the displacement adjusting device on the second nozzle (2b), and the displacement adjusting devices are arranged at the middle of the outer sides of the second nozzle (2b) and the third nozzle (2c).

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