Multi-beam metal 3D printing nozzle

Abstract

The utility model relates to a multi-beam metal 3D printing spray head which comprises a connecting plate, an upper fixed support assembly, a lower fixed support assembly, a mounting plate and a multi-beam spray head body. The other end of the connecting plate and the other end of the mounting plate are correspondingly and rotationally connected to the two ends of the lower fixed support assembly respectively, and the multi-beam spray head is fixedly mounted on the surface of the mounting plate; and the upper fixed support assembly comprises two upper support plate frames which are respectively connected with the connecting plate and the mounting plate. According to the utility model, through the cooperation of the visual camera and the control device, the control device is promoted to control the double motors to work, so that when the angle change of the upper support plate frame and the lower support plate frame is satisfied, the multi-beam nozzle can perform part printing and forming work at different spatial positions and angles; and the multi-beam nozzle is promoted to perform high-precision and high-quality printing, so that the precision and the quality of a formed 3D part are improved, and the production requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a multi-beam metal 3D printing nozzle. Background Art

[0002] Laser cladding is a new technology that uses a high-energy laser beam as a heat source to quickly melt the substrate surface and powder to form a molten pool. When the laser beam leaves the molten pool, the molten pool quickly solidifies and cools to form a cladding layer. According to the actual needs of the project, new materials can be prepared, and the surface of parts can be strengthened and repaired. The cladding layer is dense and defect-free, and its performance is usually better than casting and forging processes.

[0003] The current patent authorization announcement number is: CN111020569A, a single-beam dual-spot composite energy field laser cladding head. The nozzle disclosed in this utility model must rely on the machine tool guide rail or robot to drive the nozzle to achieve the change of the three-dimensional spatial position of the part. When encountering 3D forming of metal parts in a narrow space, the guide rail or robot occupies a large space and cannot transport the nozzle to the narrow space area to carry out part forming work. At the same time, there is no closed-loop control system to respond to changes in different working conditions, and high-precision, high-quality metal 3D parts cannot be formed.

[0004] Another example is the patent authorization publication number: CN215799897U, which is an inner hole cladding laser head. Its structure includes: a lens, an extension tube, a focusing mirror, and a cooling tube. The lens is installed in the extension tube to reflect the laser beam in the laser fiber. The focusing mirror concentrates the laser beam and irradiates it to the part to be processed of the workpiece to heat the part to be processed. The extension tube can be adjusted in length by telescopic means, so that deep hole parts of different depths can be processed. It mainly realizes the change of the position of the laser cladding head in a single direction through the telescopic rod to adapt to the work requirements of deep cavity cladding of different lengths, but it cannot meet the requirements of three-dimensional part forming. The same is true for the Chinese patents with publication numbers CN219731058U, CN116240542A, and CN217127536U, which cannot meet the requirements of three-dimensional part forming.

[0005] In summary, the existing technology is unable to transport the nozzle to a small space area to carry out part forming work, and it cannot meet the requirements of three-dimensional part forming. In addition, there is no closed-loop control system to respond to changes in different working conditions, and it is impossible to carry out high-precision, high-quality metal 3D part forming. There are problems such as poor consistency, low accuracy, poor convenience and low efficiency. Utility Model Content

[0006] The utility model provides a multi-beam metal 3D printing nozzle to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A multi-beam metal 3D printing nozzle, comprising a connecting plate, an upper fixed support assembly, a lower fixed support assembly, a mounting plate and a multi-beam nozzle, wherein one end of the connecting plate and the mounting plate are respectively rotatably connected to the two ends of the upper fixed support assembly, and the other ends of the connecting plate and the mounting plate are respectively rotatably connected to the two ends of the lower fixed support assembly, and the multi-beam nozzle is fixedly mounted on the surface of the mounting plate;

[0009] The upper fixed support assembly includes two upper support plate frames respectively connected to the connecting plate and the mounting plate, an upper connecting rod shaft fixedly connected to one of the upper support plate frames, and a first motor connected to one end of the upper connecting rod shaft, and one end of the two upper support plate frames is rotatably connected through the upper connecting rod shaft;

[0010] The lower fixed support assembly includes two lower support plate frames respectively connected to the connecting plate and the mounting plate, a lower connecting rod shaft fixedly connected to one of the lower support plate frames, and a second motor connected to one end of the lower connecting rod shaft, and one end of the two lower support plate frames is rotatably connected through the lower connecting rod shaft.

[0011] Preferably, an L-shaped plate is fixedly mounted on the surface of the mounting plate, the multi-beam nozzle is fixedly mounted on the L-shaped plate, and the multi-beam nozzle and the mounting plate are parallel to each other.

[0012] Preferably, the sides of the connecting plate facing the mounting plate are respectively connected with corresponding first support groups, and one ends of the two lower support plate frames are respectively rotatably connected with the two first support groups.

[0013] Preferably, one end of the connecting plate and the mounting plate away from the first support group is respectively connected to a corresponding second support group, and one end of the two upper support plate frames is respectively rotatably connected to the two second support groups.

[0014] Preferably, the unfolded length of the two upper support frames is greater than the unfolded length of the two lower support frames, and the two upper support frames and the two lower support frames are parallel to each other when fully unfolded.

[0015] Preferably, the two first support groups and the two second support groups are rotatably connected with positioning links respectively.

[0016] Preferably, one end of the two upper support plate frames and one end of the two lower support plate frames are respectively fixedly connected to the corresponding positioning connecting rods.

[0017] Preferably, the nozzle adjustment device also includes a visual camera for observing the injection end of the multi-beam nozzle and a control device for receiving observation data from the visual camera and controlling the first motor and the second motor.

[0018] The technical solution of the present application also provides a closed-loop control method for a multi-beam metal 3D printing nozzle, comprising the following steps:

[0019] S1, start each machine device to control the visual camera to collect data, transmit the collected data to the data processing center of the control device, and issue instructions to the first motor and the second motor according to the working conditions;

[0020] S2, by driving the upper connecting rod shaft to rotate through the first motor, so that the upper connecting rod shaft can drive one of the upper support plate frames to rotate, causing the two upper support plate frames to change their angles according to the instructions issued by the control device, and then cooperating with the second motor to drive the upper connecting rod shaft to rotate, so that the lower connecting rod shaft can drive one of the lower support plate frames to rotate, the two lower support plate frames can also change their angles according to the instructions issued by the control device, so that after the angles of the upper support plate frames and the lower support plate frames change, the nozzle adjustment device can form different shapes and drive the multi-beam nozzle to change its angle and position;

[0021] S3. When the angle and position of the multi-beam nozzle are in a stretched position, the multi-beam nozzle can complete the printing work at different positions and angles to realize the forming of complex parts.

[0022] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0023] In the utility model, through the cooperation of the visual camera and the control device, the control device controls the dual motors to work, and then when the angles of the upper support frame and the lower support frame change, the multi-beam nozzle can perform part printing and forming work at different spatial positions and angles, prompting the multi-beam nozzle to carry out high-precision and high-quality printing, so that the accuracy and quality of the 3D parts after forming are improved to meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the overall first form of the planar structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the overall second form of the planar structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the overall third form of the planar structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the third form of the utility model;

[0029] Figure 6 This is a schematic diagram of the morphological structure in the second embodiment of the present utility model.

[0030] In the figure: 1. connecting plate; 2. mounting plate; 3. multi-beam nozzle; 4. upper support plate frame; 5. upper connecting rod shaft; 6. first motor; 7. lower support plate frame; 8. lower connecting rod shaft; 9. second motor; 10. L-shaped plate; 11. first support group; 12. second support group; 13. positioning connecting rod; 14. visual camera. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0033] like Figure 1-6 As shown, the utility model provides a multi-beam metal 3D printing nozzle, including a connecting plate 1, an upper fixed support assembly, a lower fixed support assembly, a mounting plate 2 and a multi-beam nozzle 3, one end of the connecting plate 1 and the mounting plate 2 are respectively rotatably connected to the two ends of the upper fixed support assembly, the other ends of the connecting plate 1 and the mounting plate 2 are respectively rotatably connected to the two ends of the lower fixed support assembly, and the multi-beam nozzle 3 is fixedly installed on the surface of the mounting plate 2; the upper fixed support assembly includes two upper support plate frames 4 respectively connected to the connecting plate 1 and the mounting plate 2, an upper connecting rod shaft 5 fixedly connected to one of the upper support plate frames 4 and a first motor 6 connected to one end of the upper connecting rod shaft 5, and one end of the two upper support plate frames 4 is rotatably connected through the upper connecting rod shaft 5; the lower fixed support assembly includes two lower support plate frames 7 respectively connected to the connecting plate 1 and the mounting plate 2, A lower connecting rod shaft 8 fixedly connected to one of the lower support plate frames 7 and a second motor 9 connected to one end of the lower connecting rod shaft 8, and one end of the two lower support plate frames 7 are rotatably connected through the lower connecting rod shaft 8. The nozzle adjustment device also includes a visual camera 14 for observing the injection end of the multi-beam nozzle 3 and a control device for receiving observation data from the visual camera 14 and controlling the first motor 6 and the second motor 9. Specifically, a six-link structure can be formed by the cooperation of the connecting plate 1, the mounting plate 2, the upper support plate frame 4, the upper connecting rod shaft 5, the lower support plate frame 7, the lower connecting rod shaft 8, the first support group 11, the second support group 12 and the positioning connecting rod 13, and then the dual motors (the first motor 6 and the second motor 9) can control the movement of the six-link structure, so that the multi-beam nozzle 3 can reach the desired spatial position.

[0034] In this embodiment, an L-shaped plate 10 is fixedly installed on the surface of the mounting plate 2, and the multi-beam nozzle 3 is fixedly installed on the L-shaped plate 10, and the multi-beam nozzle 3 and the mounting plate 2 are in a parallel state. Specifically, the multi-beam nozzle 3 is installed and arranged parallel to the mounting plate 2, so that the multi-beam nozzle 3 changes its angle when the upper support frame 4 and the lower support frame 7 cooperate, so that the multi-beam nozzle 3 on the mounting plate 2 can stably print parts in different spaces after the position and angle change.

[0035] In this embodiment, the side of the connecting plate 1 facing the mounting plate 2 is respectively connected with a corresponding first support group 11, one end of the two lower support plate frames 7 is respectively rotatably connected to the two first support groups 11, the end of the connecting plate 1 and the mounting plate 2 away from the first support group 11 is respectively connected with a corresponding second support group 12, one end of the two upper support plate frames 4 is respectively rotatably connected to the two second support groups 12, the two first support groups 11 and the two second support groups 12 are respectively rotatably connected with positioning connecting rods 13, and one end of the two upper support plate frames 4 and one end of the two lower support plate frames 7 are respectively fixedly connected to the corresponding positioning connecting rods 13.

[0036] Specifically, the first support group 11 is respectively arranged on one side of the bottom end of the connecting plate 1 and the mounting plate 2, and the lengths are equal. By utilizing the installation of the positioning connecting rod 13, when the angle of the upper support plate frame 4 and the lower support plate frame 7 changes under the drive of the motor, the mounting plate 2 connected to one end of the upper support plate frame 4 and the lower support plate frame 7 can achieve angle changes, prompting the multi-beam nozzle 3 to follow the angle change of the mounting plate 2, which is beneficial for the multi-beam nozzle 3 to perform three-dimensional printing of parts at different angles.

[0037] To be more specific, by cooperating with the upper connecting rod shaft 5 and the lower connecting rod shaft 8 through four positioning links 13, the nozzle adjustment device is made into a six-link mechanism. After the six-link mechanism and the multi-beam nozzle 3 are fully integrated, the spatial size of the object is observed through the visual camera 14, and the observation data is provided as a signal to the dual motors to meet the dual motor control of the six-link joint, so that the adjustment device can present different states after the six-link joint changes, which is beneficial to the three-dimensional forming of parts with different spatial angles.

[0038] In this embodiment, the unfolded length of the two upper support frames 4 is greater than the unfolded length of the two lower support frames 7, and the two upper support frames 4 and the two lower support frames 7 are parallel to each other when fully unfolded.

[0039] Specifically, by making the two upper support frames 4 and the two lower support frames 7 parallel to each other when fully unfolded, the adjustment device can reduce the space size of the entire device, which is beneficial to drive the multi-beam nozzle 3 to perform metal 3D printing in a very narrow space, and the narrow space can be such as the internal space of a cylindrical cavity. Embodiment 2

[0040] like Figure 6 As shown, based on the embodiment 1, the lower fixed support assembly includes two lower support plate frames 7 respectively connected to the connecting plate 1 and the mounting plate 2, a lower connecting rod shaft 8 fixedly connected to one of the lower support plate frames 7 and a second motor 9 connected to one end of the lower connecting rod shaft 8, and one end of the two lower support plate frames 7 is rotatably connected through the lower connecting rod shaft 8. Specifically, different from the embodiment 1, when the adjusting device is assembled, the two lower support plate frames 7 can be assembled with different lengths, so that the two lower support plate frames 7 can be driven by the second motor 9 to rotate the lower connecting rod shaft 8, so that the mounting plate 2 drives the multi-beam nozzle 3 to present different angles, and when the multi-beam nozzle 3 is angled, the injection end of the multi-beam nozzle 3 will not be lower than the bottom end of the connecting plate 1 due to the short side of the lower support plate frame 7, so that the adjustment device can be adjusted to meet the different space restrictions and realize the three-dimensional printing of parts in different spaces.

[0041] like Figure 1-6 As shown, the multi-beam metal 3D printing nozzle of the utility model adopts a closed-loop control method, and its working principle is as follows:

[0042] S1, start each machine device to control the visual camera 14 to collect data, transmit the collected data to the data processing center of the control device, and issue instructions to the first motor 6 and the second motor 9 according to the working conditions;

[0043] Among them, the machine equipment includes an existing external control device, which can control the dual motors and the multi-beam nozzle 3, and the control operating system technology has been a commonly used technology in this industry and is well known and applied by technical personnel in this field. It will not be elaborated in detail in this article, and a visual camera 14 is used to observe the forming accuracy of the parts, so that when the metal 3D parts are formed, the accuracy and quality of the parts can be improved to a certain extent.

[0044] S2, the upper connecting rod shaft 5 is driven to rotate by the first motor 6, so that the upper connecting rod shaft 5 can drive one of the upper support plate frames 4 to rotate, causing the two upper support plate frames 4 to change their angles according to the instructions issued by the control device, and then cooperate with the second motor 9 to drive the upper connecting rod shaft 5 to rotate, so that the lower connecting rod shaft 8 can drive a lower support plate frame 7 to rotate, and the two lower support plate frames 7 can also change their angles according to the instructions issued by the control device, so that after the angles of the upper support plate frame 4 and the lower support plate frame 7 change, the nozzle adjustment device can form different shapes and drive the multi-beam nozzle 3 to change its angle and position;

[0045] like Figure 2 As shown, when printing parts on a flat table, the spatial position and size are observed by a visual camera 14, and the observed data is transmitted to a data processing center of the control device, and then the control device issues instructions according to the real-time data, prompting the first motor 6 to work and drive the upper connecting rod shaft 5 to rotate. After the upper connecting rod shaft 5 rotates, the two upper support plate frames 4 can produce an angle change, and then cooperate with the second motor 9 to drive the lower connecting rod shaft 8 to rotate, driving the two lower support plate frames 7 to change their angles. The upper support plate frame 4 and the lower support plate frame 7 can drive the mounting plate 2 to perform vertical adjustment, thereby satisfying the mounting plate 2 to drive multiple The beam nozzle 3 completes the vertical angle, during which the visual camera 14 can continuously observe the multi-beam nozzle 3 and transmit the observation data to the multi-beam nozzle 3 in real time. When the multi-beam nozzle 3 is not accurately aligned with the required working position, the control device controls the dual motors (the first motor 6 and the second motor 9) according to the observation data, so that the dual motors control the movement of the support frame via the upper connecting rod shaft 5 or the lower connecting rod shaft 8, so that the mounting plate 2 changes again to drive the multi-beam nozzle 3 to move and adjust, and when the nozzle 3 moves and adjusts to the required working position, it is beneficial for the multi-beam nozzle 3 to print and form parts at this spatial position.

[0046] like Figure 3 As shown, when the visual camera 14 observes the spatial position at an inclined angle, the angle change of the two upper support frames 4 and the angle change of the two lower support frames 7 enable the mounting plate 2 to be inclined, thereby enabling the multi-beam nozzle 3 to correspond to the position of the part to be formed after being inclined. When the multi-beam nozzle 3 performs the spraying operation, the printing of the 3D parts can be completed.

[0047] like Figure 4 and Figure 5As shown, when a part is formed and printed inside a cylindrical cavity, after the visual camera 14 transmits the observation data to the control device, the control device can drive the first motor 6 to drive the upper support frame 4 to a fully expanded state, and at the same time the second motor 9 drives the lower support frame 7 to a fully expanded state, causing the adjustment device to be in a rectangular state, reducing the space size of the entire equipment, and thereby allowing the multi-beam nozzle 3 to enter the cylindrical cavity to carry out printing work.

[0048] S3. When the angle and position of the multi-beam nozzle 3 are changed to a stretched position, the multi-beam nozzle 3 can complete the printing work at different positions and angles to realize the forming of complex parts.

[0049] Among them, because the multi-beam nozzle 3 cooperates with the adjustment device to achieve changes in different angles and positions, and then cooperates with the observation of the visual camera 14, the multi-beam nozzle 3 can have higher precision and better quality when performing 3D part forming, meeting production needs.

[0050] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0051] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0052] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-beam metal 3D printing nozzle, characterized in that: It comprises a connecting plate (1), an upper fixed support assembly, a lower fixed support assembly, a mounting plate (2) and a multi-beam nozzle (3), wherein one end of the connecting plate (1) and the mounting plate (2) are respectively rotatably connected to the two ends of the upper fixed support assembly, and the other ends of the connecting plate (1) and the mounting plate (2) are respectively rotatably connected to the two ends of the lower fixed support assembly, and the multi-beam nozzle (3) is fixedly mounted on the surface of the mounting plate (2); The upper fixed support assembly comprises two upper support plate frames (4) respectively connected to the connecting plate (1) and the mounting plate (2), an upper connecting rod shaft (5) fixedly connected to one of the upper support plate frames (4), and a first motor (6) connected to one end of the upper connecting rod shaft (5), and one end of the two upper support plate frames (4) are rotatably connected via the upper connecting rod shaft (5); The lower fixed support assembly comprises two lower support plate frames (7) respectively connected to the connecting plate (1) and the mounting plate (2), a lower connecting rod shaft (8) fixedly connected to one of the lower support plate frames (7), and a second motor (9) connected to one end of the lower connecting rod shaft (8), and one end of the two lower support plate frames (7) are rotatably connected via the lower connecting rod shaft (8).

2. A multi-beam metal 3D printing nozzle according to claim 1, characterized in that: An L-shaped plate (10) is fixedly mounted on the surface of the mounting plate (2), and the multi-beam nozzle (3) is fixedly mounted on the L-shaped plate (10), and the multi-beam nozzle (3) and the mounting plate (2) are in a mutually parallel state.

3. A multi-beam metal 3D printing nozzle according to claim 1, characterized in that: The connecting plate (1) and the mounting plate (2) are connected to corresponding first support groups (11) on one side facing each other, and one end of the two lower support plate frames (7) is rotatably connected to the two first support groups (11) respectively.

4. A multi-beam metal 3D printing nozzle according to claim 3, characterized in that: One end of the connecting plate (1) and the mounting plate (2) away from the first support group (11) is respectively connected to a corresponding second support group (12), and one end of the two upper support plate frames (4) is respectively rotatably connected to the two second support groups (12).

5. A multi-beam metal 3D printing nozzle according to claim 4, characterized in that: The unfolded length of the two upper support frames (4) is greater than the unfolded length of the two lower support frames (7), and the two upper support frames (4) and the two lower support frames (7) are parallel to each other when fully unfolded.

6. A multi-beam metal 3D printing nozzle according to claim 4, characterized in that: The two first support groups (11) and the two second support groups (12) are respectively rotatably connected with positioning connecting rods (13).

7. A multi-beam metal 3D printing nozzle according to claim 6, characterized in that: One end of the two upper support plate frames (4) and one end of the two lower support plate frames (7) are respectively fixedly connected to corresponding positioning connecting rods (13).

8. The multi-beam metal 3D printing nozzle according to claim 1, characterized in that: It also includes a visual camera (14) for observing the spraying end of the multi-beam nozzle (3) and a control device for receiving observation data from the visual camera (14) and controlling the first motor (6) and the second motor (9).

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