An additive manufacturing apparatus, method and computer readable storage medium

Abstract

This invention discloses a laminated manufacturing apparatus, which mainly uses a rotary drive to rotate a molding platform, allowing a light source to scan circumferentially for resin curing, thereby improving the molding efficiency of the printed model. The main technical solution of this invention is as follows: a laminated manufacturing apparatus, including a base; a material tank disposed on the base, including a light-transmitting area located on the side of the material tank, the material tank being used to hold resin; a molding platform for connecting the model; a rotary drive connected to the base and the molding platform, the rotary drive being used to drive the molding platform to rotate; and a light source, the light emitted by the light source passing through the light-transmitting area, the light source curing the resin along the rotation trajectory of the molding platform. This invention is mainly used for laminated manufacturing, which can improve model molding efficiency and achieve rapid printing.

Description

Technical Field

[0001] This invention relates to the field of laminated fabrication technology, and more particularly to a laminated fabrication apparatus, method, and computer-readable storage medium. Background Technology

[0002] Lamination manufacturing equipment achieves 3D printing by accumulating resin layer by layer. Lamination manufacturing equipment is divided into various types according to different molding processes. Among them, photopolymerization printing uses an ultraviolet (UV) laser beam to selectively cure polymeric resin layer by layer. For example, during the printing process, the printing platform is immersed in a resin tank at a distance from the release film and one layer of the model. The photomechanical system cures the resin to a fixed shape via a display screen. After one layer is printed, the printing platform rises to separate the model from the release film. Then, the printing platform sinks again to move behind the next layer to be printed. After the resin reflow is complete, the photomechanical system exposes the resin to form a layer on the surface of the molded model, and then continues laser curing. This process is repeated to achieve layer-by-layer printing.

[0003] This photopolymerization layer-by-layer printing method requires lifting the printing platform to release the mold after each layer is printed, then lowering it again and waiting for a period of time before exposure. This results in low forming efficiency and slow printing speed. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a laminate manufacturing apparatus, method, and computer-readable storage medium to solve the problem of how to improve molding efficiency and printing speed.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] On one hand, the present invention provides a laminated manufacturing apparatus, comprising:

[0007] Base; material tank, which is disposed on the base and includes a light-transmitting area on the side of the material tank, the material tank being used to hold resin; molding platform, which is used to connect the model;

[0008] A rotary drive component, which is connected to a base and also to a forming platform, is used to drive the forming platform to rotate.

[0009] The light source emits light that passes through the light-transmitting area to cure the resin along the rotational trajectory of the molding platform.

[0010] In some embodiments, the laminate manufacturing apparatus further includes: a distance adjustment member disposed on a base, the distance adjustment member being connected to at least one of a forming platform and a light source, the distance adjustment member being used to adjust the distance between the forming platform and the light source, the direction of adjustment of the distance between the forming platform and the light source being parallel to the surface of the forming platform used to connect the model;

[0011] The distance adjustment component includes a first adjustment component and / or a second adjustment component; the first adjustment component is disposed on the base, the rotation drive component is connected to the first adjustment component, and the first adjustment component is used to adjust the distance between the molding platform and the light source;

[0012] The second adjustment component is mounted on the base, and the light source is connected to the second adjustment component. The second adjustment component is used to adjust the distance between the light source and the forming platform.

[0013] In other embodiments, the lamination manufacturing apparatus further includes: a distance adjustment member disposed on a base, the distance adjustment member being connected to at least one of a forming platform and a light source, the distance adjustment member being used to adjust the distance between the forming platform and the light source, the direction of adjustment of the distance between the forming platform and the light source being parallel to the surface of the forming platform used to connect the model;

[0014] The distance adjustment component includes a third adjustment assembly, which is mounted on the base. Both the light source and the material trough are connected to the third adjustment assembly. The third adjustment assembly is used to adjust the distance between the light-transmitting area and the forming platform. The third adjustment assembly is also used to adjust the synchronous movement of the light source and the material trough.

[0015] The third adjustment component includes a power component, a first lead screw, and a first transmission block. The power component is connected to the base, and the first lead screw is connected to the power component. The first lead screw has an external thread. The first transmission block includes a connecting hole with an internal thread. The first transmission block is threadedly connected to the first lead screw, and the first transmission block includes a bottom surface that is slidably connected to the base. The material trough and the light source are connected to the first transmission block. The power component drives the first lead screw to rotate, thereby using the thread to push the first transmission block to move the material trough and the light source relative to the forming platform in the moving direction.

[0016] The light source's light outlet is opposite to the light-transmitting area, and there is at least one light source. When there is only one light source, it is located on one side of the material tank. When there are multiple light sources, they are located on different sides of the material tank, and the multiple light sources are centrally symmetrically distributed about the rotation center of the forming platform. The light source is either a point light source or a line light source.

[0017] The laminate manufacturing equipment also includes a lifting assembly; the lifting assembly is connected to the rotary drive and the base respectively, and is used to drive the forming platform to move in the direction of approaching or moving away from the material trough;

[0018] The base includes a support seat, a support frame, and a cantilever; the lifting assembly includes a guide rail, a slider, a second lead screw, a second transmission block, and a driving component; the support frame is connected to the support seat, the guide rail is mounted on the support frame, the slider is slidably connected to the guide rail, one end of the cantilever is connected to the slider, the other end of the cantilever is connected to the rotary driving component, the second transmission block is connected to the cantilever, the second lead screw is threadedly connected to the second transmission block, and the driving component is connected to the support seat and the second lead screw; the driving component is used to drive the second lead screw to rotate, thereby threading the second transmission block to move the cantilever.

[0019] The material trough includes a bottom wall and a side wall. The side wall is located on one side of the bottom wall and is also connected to the bottom wall. The light-transmitting area is set on the side wall.

[0020] The lamination manufacturing equipment also includes: a bottom light source; a bottom light-transmitting area is provided on the bottom wall, the bottom light source is located below the material tank, and the light outlet of the bottom light source is opposite to the bottom light-transmitting area.

[0021] On the other hand, the present invention also provides a method for manufacturing laminates, comprising:

[0022] The light source is controlled to illuminate the printing material located in the first forming area, so that the printing material in the first forming area of ​​the model to be printed is cured and formed.

[0023] The light source is controlled to illuminate the printing material located in the second forming area so that the printing material in the second forming area of ​​the model to be printed is solidified and formed. The first forming area and the second forming area correspond to different printing positions on a circumferential layer of the model to be printed. The circumferential layer is the circumferential layer of the model to be printed with a preset center as the center of rotation.

[0024] The method further includes: obtaining multiple circumferential layers of the model to be printed, wherein the light spot length emitted by the light source is adapted to the height of the model to be printed; before controlling the light source to irradiate the printing material located in the first forming area so that the printing material in the first forming area of ​​the model to be printed is solidified and formed.

[0025] The method further includes: selecting a first circumferential layer from multiple circumferential layers, and determining a first forming area and a second forming area within the first circumferential layer; after controlling the light source to irradiate the printing material located in the second forming area so that the printing material in the second forming area of ​​the model to be printed is solidified, the method further includes: controlling the irradiation position of the light source to move outward by a preset distance relative to the first circumferential layer so that the light source irradiates the second circumferential layer so that the printing material in the second circumferential layer of the model to be printed is solidified, wherein the second circumferential layer is a circumferential layer located outside the first circumferential layer and adjacent to the first circumferential layer.

[0026] The process of controlling the light source to illuminate the printing material located in the second forming area includes:

[0027] Control the rotation of the light source relative to the forming platform so that the light source illuminates the printing material located in the second forming area; control the rotation of the forming platform relative to the light source so that the light source illuminates the printing material located in the second forming area; or control the rotation of the light source relative to the forming platform and control the rotation of the forming platform relative to the light source so that the light source illuminates the printing material located in the second forming area.

[0028] In another aspect, the present invention also provides a laminated manufacturing apparatus, comprising:

[0029] A memory for storing a computer program; a processor for executing the computer program to implement the steps of the layered manufacturing method described above.

[0030] In another aspect, the present invention also provides a computer-readable storage medium storing at least one executable instruction that causes a processor to perform the steps of the aforementioned layer fabrication method.

[0031] The laminated manufacturing equipment proposed in this invention uses a rotary drive to drive a molding platform to rotate relative to the light emitted by a light source. This allows the light emitted by the light source to cure the resin along the rotation trajectory of the molding platform, thereby achieving one-time curing and forming of the model in the height direction at the connection point between the molding platform and the model. As the molding platform rotates, the light gradually cures the resin in various areas of the circumferential layer of the model along the rotation trajectory of the molding platform. After the molding platform finishes rotating, the model is printed and formed in both the height and circumferential directions, thus completing the one-time forming of the model in the height direction without the need for layer-by-layer stacking in the height direction. This improves the model forming efficiency and enables rapid printing.

[0032] The proposed layered manufacturing method controls a light source to irradiate the printing material at a first and second forming position, allowing the model to be printed to be formed at different printing positions along a circumferential layer. This enables the light emitted by the light source to cure the resin along the circumferential direction. As the circumference rotates, the light along the circumferential trajectory can gradually cure the resin in various areas of the circumferential layer, thereby achieving circumferential printing of the model. This eliminates the release time required for traditional layer-by-layer printing and allows for one-time forming in the height direction, improving model forming efficiency and enabling rapid printing.

[0033] The beneficial effects of the other layer fabrication apparatus and computer-readable storage medium proposed in this invention are similar to those of the layer fabrication method described above, and will not be repeated here. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of a multilayer manufacturing apparatus provided in an embodiment of the present invention;

[0035] Figure 2 This is a three-dimensional structural schematic diagram of another laminated manufacturing apparatus provided in an embodiment of the present invention;

[0036] Figure 3 This is a three-dimensional structural schematic diagram of another layer manufacturing apparatus provided in an embodiment of the present invention;

[0037] Figure 4 This is a top view of another laminated manufacturing apparatus provided in an embodiment of the present invention;

[0038] Figure 5 for Figure 4 A schematic cross-sectional view of the multilayer fabrication equipment shown in the diagram at position BB;

[0039] Figure 6 This is a schematic diagram of the structure of a material trough in a lamination manufacturing device provided by an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of model layering provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of another layer manufacturing apparatus provided in an embodiment of the present invention;

[0042] Figure 9 A flowchart of a laminate manufacturing method provided in an embodiment of the present invention;

[0043] Figure 10 A flowchart of another laminated fabrication method provided in an embodiment of the present invention;

[0044] Among them, the components are: base-100, support base-110, support frame-120, cantilever-130, first extension section-131, second extension section-132, third extension section-133, support surface-111, support leg-112, material trough-200, light-transmitting area-210, bottom wall-220, side wall-230, forming platform-300, rotary drive component-400, light source-500, light outlet-510, fixing plate-520, third adjustment component-600, power component-610, first lead screw-620, first transmission block-630, lifting component-700, guide rail-710, slider-720, second lead screw-730, second transmission block-740, drive component-750, and bottom light source-800. Detailed Implementation

[0045] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation, structure, features and effects of the molding platform proposed according to the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0046] On the one hand, such as Figure 1-5 As shown, an embodiment of the present invention provides a multilayer manufacturing apparatus, comprising:

[0047] Base 100; material tank 200, the material tank 200 is disposed on the base 100 and includes a light-transmitting area 210 located on the side of the material tank, the material tank 200 is used to hold resin; molding platform 300, the molding platform 300 is used to connect the model;

[0048] A rotary drive 400 is connected to a base 100 and a molding platform 300. The rotary drive 400 is used to drive the molding platform 300 to rotate.

[0049] Light source 500 emits light that passes through light-transmitting area 210 and cures the resin along the rotation trajectory of the molding platform.

[0050] In some embodiments, the base 100 can serve a supporting function. Alternatively, the base 100 can serve a supporting and positioning function for the material trough 200 and the forming platform 300. In one embodiment, such as Figure 4 As shown, the base 100 includes a support base 110, a support frame 120 fixedly connected to the support base 110, and a cantilever 130 slidably connected to the support frame. The support base 110 may further include a support surface 111 and support legs 112 fixedly connected to the support surface 111. The support surface 111 is a plate-shaped structure and is horizontally arranged. The support legs 112 are located below the support surface 111, such as at the four corners below the support surface 111, and play the role of supporting the support surface 111.

[0051] The material tank 200 is used to hold liquid resin and is placed above the support surface 111. One end of the support frame 120 is connected to the support surface 111, and the other end extends vertically above the top of the material tank 200. In specific embodiments, the number of light sources 500 can be one or more. In some embodiments, there is one light source 500 located on one side of the material tank 200, with its light-emitting port 510 facing the light-transmitting area 210. In other embodiments, there are multiple light sources 500 located on different sides of the material tank 200, and these multiple light sources 500 are centrally symmetrically distributed about the rotation center of the molding platform 300. The material tank 200 may include one or more light-transmitting areas, and the light-emitting port 510 of each light source 500 is opposite to the light-transmitting area 210.

[0052] In a specific embodiment, the light source 500 may be disposed on the base 100; or the light source 5000 may be connected to the frame of the multilayer manufacturing equipment and disposed independently of the base 100.

[0053] One end of the cantilever 130 is slidably connected to the support frame 120, and the other end extends toward and is suspended from the material trough 200. The rotary drive 400 can be a motor, which can be fixed to the suspended end of the cantilever 130. The forming platform 300 is connected to the rotation output end of the rotary drive 400, i.e., the output shaft of the motor. The material trough 200 can be circular or square in shape. The light-transmitting area 210 is located on the side wall 230 of the material trough 200. The light-transmitting area 210 can be only a transparent area relative to the light source 500, or the side wall 230 of the material trough 200 can be made of transparent material, such as acrylic or glass, to allow light from the light source 500 to pass through. The forming platform 300 can have various shapes, such as circular, square, or any irregular shape. The bottom surface of the forming platform 300 relative to the material trough 200 can be flat. The light source 500 is a laser light source, such as an ultraviolet laser light source. The light emitted by light source 500 can have a focal point. After passing through the light-transmitting area 210, the resin is cured only at the focal point. Light source 500 can be a point light source, meaning the focal spot is a single point. By moving this point, linear scanning printing is performed vertically (i.e., along the model's height) at the connection between the molding platform and the model. Alternatively, light source 500 can be a line light source, meaning the focal spot is a straight line. Scanning printing is performed along the rotation trajectory of the molding platform by rotating this line segment. This ensures that each molding position has a focal cured area corresponding to the model's height. One rotation of the molding platform completes the printing of a circular layer, increasing printing speed. The line light source can be fully exposed to render the entire line segment's spot, or selectively exposed to render spots at specific points within the line segment. Alternatively, the light source can be a line light source that includes linearly scanning point light sources, with the spot being a linear spot scanned from the focal spot of the point light source.

[0054] In some embodiments, the molding platform 300 includes at least two rotational positions. For example, the molding platform 300 includes at least a first rotational position and a second rotational position. When the molding platform rotates, it rotates at least from the first rotational position to the second rotational position. The rotational position refers to the position of the molding platform when it rotates to a certain state. Specifically, the rotational position can be represented by a rotation angle of 0° to 360°, based on the zero point of rotation of the molding platform. For example, when the molding platform is in the first rotational position, a first side of the molding platform faces the light source, and a first molding area below the molding platform is located in the region where the light source's focal point is located. The first molding area is one of the resin areas located below the molding platform. When the molding platform is in the second rotational position, a second side of the molding platform faces the light source, and a second molding area below the molding platform is located in the region where the light source's focal point is located. The second molding area is one of the resin areas located below the molding platform.

[0055] In some embodiments using point light sources for printing, the model is sliced ​​along its height. During printing, a layer of resin equal to the model's height is applied to the surface of the printing platform or the already formed model. The point light source scans point by point along the contour of the slices. After curing one layer of the model, the printing platform or the already formed model is lowered by one layer of the model's height, and the next layer is scanned point by point. This method of curing layer by layer along the model's height has low forming efficiency and long printing time. However, some embodiments of this application use a line light source for line rotational forming. At any rotation position, one-time curing and forming of the model's height can be achieved. As the forming platform rotates, the light source gradually cures the resin in various areas of the circumferential layer along the rotation trajectory of the forming platform. After the forming platform finishes rotating, the model is printed and formed in both the height and circumferential directions, thus completing one-time forming of the model in the height direction without the need for layer-by-layer stacking in the height direction. This improves the model forming efficiency and enables rapid printing. Alternatively, some embodiments of this application perform vertical scanning printing, i.e., the model height direction, by moving a point light source. At any rotational position, one-time curing and forming in the model height direction can be achieved. As the forming platform rotates, the light rays gradually cure the resin in various areas of the circumferential layer along the rotation trajectory of the forming platform. After the forming platform finishes rotating, the model is printed and formed in both the height and circumferential directions, i.e., the model is formed in one step in the height direction without the need for layering in the height direction, thereby improving the model forming efficiency and achieving rapid printing.

[0056] The following description uses a 500 light source as an example to illustrate the printing process. The model to be printed is sliced, such as... Figure 8As shown, slice data of each layer is obtained along the outer wall direction from the rotation center A. Here, r1, r2, r3...ri represent the first layer, second layer, third layer...i-th layer, and the slice data of any layer represents the curing information in the circumferential direction of the model. The thickness of a model layer is Δr, and the thickness Δr of each model layer can be the same or different. It can be understood that the model layer described in this embodiment is a circumferential layer model. When printing the first layer r1, the focus of the light source 500 is controlled to move vertically and scan to the lower surface of the molding platform 300. Specifically, it can scan to a distance of one layer's thickness from the center point of the lower surface. The vertical distance between the light source focus and the central rotation axis of the molding platform 300 is the thickness of the first layer model, so that the first layer model is formed and adhered to the molding platform 300. When printing the second layer r2, the distance between the focus of the light source 500 and the outer surface of the first layer model r1 is adjusted to a preset distance. This preset distance can be a distance value within the range [0, Δr], such as 0, Δr / 2, or Δr, where Δr is the thickness of the second layer model. The distance between the focal point of the light source 500 and the surface of the first layer model r1 is adjusted to a preset distance, so that the light source emits light using preset laser energy, allowing the second layer model to be formed and bonded to the outer surface of the first layer model with a forming thickness of Δr. Then, based on the slicing data of the second layer model, the rotation drive 400 drives the forming platform 300 to rotate, so that different sides of the first layer model r1 are opposite the light source 500. The light source 500 selectively scans according to the circumferential slicing data of the second layer model to superimpose the second layer model r2 onto the first layer model r1 until the second layer model r2 is printed. This process is repeated until the last layer model is printed. It is understood that the central axis of the forming platform 300 passes through the rotation center of the forming platform 300. For ease of explanation, the following example assumes that the thickness Δr of each layer model is the same. It is understood that the resin at the focal point of the light source 500 is cured, while the resin outside the focal point is not cured.

[0057] There are various ways to adjust the distance between the focal point of the light source 500 and the surface of the first layer model r1 to a preset distance, such as moving the molding platform 300 and / or the light source 500, or adjusting the focal length of the light emitted from the light source. It is understood that in some embodiments, further processing can be performed on the surface of the molded model; processing can be done on only one layer, i.e., only one layer of printing is performed, without moving the molding platform 300 and / or the light source 500. To ensure that the resin depth is sufficient to print the height of the model to be printed, and to ensure that the material tank 200 contains enough printing resin so that the remaining resin is still higher than the molding platform 300 when the printing is finished, thereby increasing the printing speed, the height of the material tank 200 should be set relatively high, such as 70 mm to 120 mm.

[0058] This invention proposes a laminated manufacturing apparatus, method, and computer-readable storage medium. It primarily improves the molding efficiency of the printed model by using a rotary drive to rotate the molding platform, allowing the light source to scan circumferentially for resin curing. In existing technologies, after printing one layer, the printing platform rises to separate the model from the release film, then descends to move to the next layer. The optical engine waits for the resin to reflow before exposure, resulting in low molding efficiency and slow printing speed. In contrast, this application uses a molding platform to connect the model. The rotary drive rotates the molding platform, aligning different sides of the molded model with the light source. The focal point of the light emitted by the light source cures the resin along the rotation trajectory of the molding platform based on circumferential slicing data. The molding platform drives the molded model to rotate for printing, eliminating the need for model release and saving time spent on platform lifting for release. Furthermore, the printing resin remains in constant contact with the molded model, eliminating the need to wait for resin reflow, resulting in high molding efficiency and fast printing speed.

[0059] In some embodiments, the light source 500 has a focal length and a focal point, and the focal length of the light source 500 is adjustable. When a circumferential layer is printed, the focal point of the light source 500 is moved away from the formed model by a distance Δr by controlling the focal length of the light source 500, so that the focal point of the light source 500 is always located on one side of the surface of the formed model. The surface of the forming platform 300 used to connect the model is horizontal, and the rotation plane of the forming platform is also horizontal. Thus, through the curing of resin at the focal point, the resin on the surface of the formed model is cured and bonded to the formed model. Then, the rotating drive 400 drives the model to rotate, realizing circumferential printing of various areas of the model to be printed in a circumferential layer. By moving the focal point of the light source 500 and repeating the above process, three-dimensional printing of multiple circumferential layers can be achieved. In this way, the focal position of the light source 500 can be controlled by controlling the focal length of the light source 500. The process of printing the model layer by layer can be completed without the need for horizontal movement of the light source and the forming platform. This avoids the impact of horizontal movement of the forming platform on the rotation of the forming platform, and also avoids the impact of horizontal movement of the light source on the stability and accuracy of the light source. This reduces the structural complexity of the equipment and improves the motion accuracy.

[0060] In one embodiment, the lamination manufacturing equipment further includes a distance adjustment member disposed on the base 100. The distance adjustment member is connected to at least one of the forming platform 300 and the light source 500. The distance adjustment member is used to adjust the distance between the forming platform 300 and the light source 500. The direction of movement of the distance adjustment between the forming platform 300 and the light source 500 is parallel to the surface of the forming platform 300 used to connect the model. For example, if the surface of the forming platform 300 used to connect the model is a horizontal plane, then the direction of movement of the distance adjustment between the forming platform 300 and the light source 500 is horizontal, that is, the distance adjustment member is used to adjust the horizontal distance between the forming platform 300 and the light source 500. In some embodiments, if the surface of the forming platform 300 used to connect the model is a plane at a certain angle to the horizontal plane, then the direction of movement of the distance adjustment between the forming platform 300 and the light source 500 is parallel to the surface of the forming platform 300 used to connect the model.

[0061] Thus, the forming platform 300 and the light source 500 move relative to each other in the direction of the surface of the forming platform 300 used to connect the model, or in other words, they move relative to each other in the direction perpendicular to the central axis of rotation of the forming platform 300. When the thickness Δr of each model layer is the same, the distance between the focal point of the light source 500 and the surface of the previous model layer can be adjusted to a preset distance by moving the forming platform 300 away from the light source 500 by Δr after one layer is printed; or by moving the light source 500 away from the model by Δr after one layer is printed; or by moving both the light source 500 and the forming platform 300 simultaneously. The specific structure will be described below.

[0062] Firstly, the distance adjustment component includes a first adjustment assembly, which is disposed on the base 100. The rotation drive 400 is connected to the first adjustment assembly. The first adjustment assembly is used to move the molding platform 300 to adjust the distance between the molding platform 300 and the light source 500.

[0063] In embodiments where the base 100 includes a support base 110, a support frame 120, and a cantilever 130, the first adjustment component can be disposed between the support base 110 and the support frame 120, between the support frame 120 and the cantilever 130, or between the cantilever 130 and the rotary drive member 400. After one layer of printing is completed, the first adjustment component moves the forming platform 300 away from the light source 500 by moving the rotary drive member 400, and then moves the formed model by a distance of Δr, while the focal length and focal point position of the light source 500 remain unchanged, so that the distance between the surface of the formed model and the focal point of the light source 500 is a preset distance. This allows the light source to emit light using preset laser energy control, enabling the second layer of the model to be formed and adhered to the surface of the first layer of the model with a forming thickness of Δr, i.e., the thickness of one layer of the model, so that the next layer of printing can then proceed.

[0064] Secondly, the distance adjustment component includes a second adjustment assembly, which is disposed on the base 100. The light source 500 is connected to the second adjustment assembly, which is used to move the light source 500 to adjust the distance between the light source 500 and the molding platform 300.

[0065] A fixing plate 520 is also connected to the light source 500. The second adjustment component is connected to the fixing plate 520 and the base 100, such as to the support base 110. After one layer of printing is completed, the second adjustment component moves the fixing plate 520 to move the light source 500 away from the formed model, and then moves the focal position of the light source 500 away from the formed model by a distance of Δr. The position of the formed model remains unchanged, so that the distance between the focal position of the light source 500 and the surface of the formed model is a preset distance. This allows the light source to emit light using preset laser energy, enabling the second layer of the model to be formed and adhered to the surface of the first layer of the model with a forming thickness of Δr, which is the thickness of one layer of the model. Then, the next layer of printing can be performed.

[0066] Third, the distance adjustment component includes a first adjustment component and a second adjustment component. The first adjustment component is disposed on the base 100, and the rotary drive component 400 is connected to the first adjustment component. The second adjustment component is disposed on the base 100, and the light source 500 is connected to the second adjustment component. The first adjustment component is used to cooperate with the second adjustment component to adjust the distance between the light source 500 and the forming platform 300.

[0067] The first adjustment component can be positioned between the cantilever 130 and the rotary drive 400, while the second adjustment component is connected to the fixed plate 520 and the base 100. After one layer of printing is completed, the first adjustment component moves the forming platform 300 away from the light source 500 by moving the rotary drive 400, and then moves the already formed model light source 500. The second adjustment component moves the light source 500 away from the already formed model by moving the fixed plate 520. Consequently, the focal point of the light source 500 and the already formed model move away from each other simultaneously, increasing the distance between the surface of the already formed model and the focal point of the light source 500 by Δr, which is the thickness of one layer of the model. Then, the next layer can be printed. The light source 500 and the forming platform 300 move simultaneously, and the single movement distance of the light source 500 and the forming platform 300 is less than Δr, thus completing the relative movement distance Δr between the light source 500 and the forming platform 300. For each component, the movement distance is smaller, the movement efficiency is higher, and the space required during the printing process of the multilayer equipment is smaller.

[0068] Fourth, the distance adjustment component includes a third adjustment assembly 600, which is disposed on the base 100. The light source 500 and the material trough 200 are both connected to the third adjustment assembly 600. The third adjustment assembly 600 is used to adjust the distance between the light-transmitting area 210 and the forming platform 300. The third adjustment assembly 600 is also used to adjust the synchronous movement of the light source 500 and the material trough 200.

[0069] The molding process can occur near the center of the material tank 200. The light from the light source 500 passes sequentially through the light-transmitting area 210 and the resin, with the focal point located near the center of the material tank 200 for resin curing. Alternatively, the molding process can occur at the edge of the material tank 200, specifically at the light-transmitting area 210. This avoids the resin affecting the light intensity and prevents the light from passing through the resin and affecting its properties. Specifically, the focal point of the light source 500 is always located on the side surface of the light-transmitting area 210 opposite to the molded model. During the molding process, the molding platform 300 does not move horizontally, while the third adjustment component 600 controls the synchronous movement of the light source 500 and the material tank 200. This causes the focal point of the light source 500 and the light-transmitting area 210 to move simultaneously away from the molded model by a distance of Δr. This creates a gap the thickness of the model between the light-transmitting area 210 and the molded model, with the focal point located at this gap. The curing of the resin at the focal point then cures the resin at the gap between the light-transmitting area 210 and the molded model. Then, the model is rotated by the rotary drive component 400, realizing the circumferential printing of each area of ​​the circumferential layer of the model to be printed. The above process is repeated to achieve 3D printing.

[0070] In a more specific implementation, such as Figure 3-5As shown, the third adjustment component 600 includes a power component 610, a first lead screw 620, and a first transmission block 630. The power component 610 is connected to the base 100, and the first lead screw 620 is connected to the power component 610. The first lead screw 620 has an external thread. The first transmission block 630 includes a connecting hole with an internal thread. The first transmission block 630 is threadedly connected to the first lead screw 620, and the first transmission block 630 includes a bottom surface that is slidably connected to the base 100. The material trough 200 and the light source 500 are both connected to the first transmission block 630. The power component 610 drives the first lead screw 620 to rotate, thereby threading the first transmission block 630 to move the material trough 200 and the light source 500 relative to the molding platform 300 in the aforementioned direction of movement parallel to the surface of the molding platform 300 used to connect the model.

[0071] The power component 610 can be a motor, which drives the first lead screw 620 to rotate. The first transmission block 630 can be an approximately cuboid structure. The sliding connection between the first transmission block 630 and the base 100 can be varied. For example, the bottom surface of the first transmission block 630 can slide against the support surface 111, so that the first transmission block 630 does not rotate with the first lead screw 620, but moves closer to or further away from the power component 610 under the pushing action of the thread. Alternatively, the sliding connection between the first transmission block 630 and the base 100 can be other connection methods known to those skilled in the art. The fixing plate 520 of the light source 500 is connected to the first transmission block 630 via a connecting bracket.

[0072] In some other embodiments, only the material trough 200 may be connected to the third adjustment component 600, which is used to adjust the horizontal movement of the material trough 200, or the light-transmitting area 210. The model forming process occurs at the edge of the material trough 200, specifically at the light-transmitting area 210. During the forming process, the forming platform 300 does not move horizontally, the light source 500 does not move, while the third adjustment component 600 acts on the material trough 200, causing the light-transmitting area 210 to move away from the formed model by a distance of Δr. The focal point of the light source 500 is adjustable. When the light-transmitting area 210 moves away from the molded model by Δr, the focal point of the light source 500 is simultaneously moved away from the molded model by Δr, ensuring that the focal point of the light source 500 is always located on the side surface of the light-transmitting area 210 relative to the molded model. A gap the thickness of the model is maintained between the light-transmitting area 210 and the molded model, and the focal point is located within this gap. The resin at the focal point then cures, causing the resin in the gap between the light-transmitting area 210 and the molded model to solidify as well. The rotating drive 400 then rotates the model, achieving circumferential printing of each area of ​​the circumferential layer of the model to be printed. This process is repeated to achieve 3D printing. Therefore, the third adjustment component 600 can move the material tank 200 so that the model forming process occurs at the edge of the material tank 200. This can prevent the resin from affecting the light intensity and prevent the light from passing through the resin and affecting the resin properties. Moreover, this process can be completed without the need for a light source and horizontal movement of the forming platform. This avoids the horizontal movement of the forming platform from affecting the rotational movement of the forming platform, thereby reducing equipment complexity and improving motion accuracy.

[0073] For example, the distance adjustment component also includes the second adjustment component described above, while the first transmission block 630 of the third adjustment component is only connected to the material trough 200 and not to the light source 500. Instead, the synchronous movement of the light source 500 and the material trough 200 is achieved through the second adjustment component, so that the focal point of the light source 500 is located in the gap between the light-transmitting area 210 and the formed model. Alternatively, for example, the distance adjustment component may not include the second adjustment component described above, but instead, the focal point of the light source 500 is located in the gap between the light-transmitting area 210 and the formed model by changing the focal length of the light source 500.

[0074] In one implementation, such as Figure 2 As shown, the number of light sources 500 can be one, or there can be multiple light sources 500. In a specific embodiment, the multiple light sources 500 are located on different sides of the material tank 200, and the multiple light sources 500 are centrally symmetrically distributed about the rotation center of the forming platform 300. Specifically, there can be two light sources 500, and the two light sources can be located on opposite sides of the material tank. Figure 1 , Figure 3-4As shown, there are two light sources 500, located on opposite sides of the material tank 200, with their light outlets 510 facing each other, allowing for simultaneous resin curing from both sides. For example, when the printed model is a cylinder, the two light sources 500 can simultaneously cure the resin from both radial sides of the cylinder. More specifically, the surface of the molding platform 300 used to connect the model is horizontal, and the direction of movement for adjusting the distance between the molding platform 300 and the light sources 500 is horizontal. The distance adjustment mechanism includes two second adjustment components mounted on the base 100. Each light source 500 is connected to a corresponding second adjustment component, which is used to adjust the horizontal distance between the light source 500 and the molding platform 300. During printing, the two second adjustment components are used to adjust the positions of the two light sources 500. The two light sources 500 can move simultaneously or according to the printing progress of the corresponding side of the model. Compared to a single light source 500, two light sources 500 can print from the radial sides of the model separately, reducing the rotation angle of the molding platform 300. For example, only a 180-degree rotation is needed. With the cooperation of the two light sources 500, curing can be achieved in a 360-degree circumferential direction, further improving molding efficiency, accelerating printing speed, and enabling high-speed printing. Furthermore, in some other embodiments, the number of light sources 500 can be three or more. For example, if the material tank 200 is circular, three light sources 500 can be evenly distributed circumferentially on the side of the material tank 200, achieving simultaneous resin curing from three directions. The molding platform 300 only needs to rotate 120 degrees to achieve 360-degree circumferential curing with the cooperation of the three light sources 500. Thus, with multiple light sources 500, a circumferential layer can be divided into multiple arc segments, with each light source corresponding to the molding of one arc segment. Printing of a circumferential layer of the model can be achieved with less than one rotation of the molding platform, thereby improving printing efficiency and speed.

[0075] In some implementations, when the light source 500 is a line light source, the length of the light spot emitted by the light source 500 is adapted to the height of the model to be printed. Specifically, when the threshold length of the straight light spot emitted by the light source 500 is greater than or equal to the height of the model to be printed, the light source 500 can selectively adjust the length of the straight light spot to be equal to the height of the model to be printed, so as to selectively perform scanning printing. Alternatively, when the threshold length of the straight light spot emitted by the light source 500 is less than the height of the model to be printed, one-time forming in the height direction of the printed model cannot be performed, and multi-segment printing can be performed. For example, in one implementation, the laminated manufacturing equipment also includes a lifting assembly 700. The lifting assembly 700 is connected to the rotary drive 400 and the base 100 respectively, and is used to drive the forming platform 300 to move in the direction of approaching or moving away from the material tank 200.

[0076] When the height of the model to be formed is relatively high, the printing height cannot be met due to the height limitation of the material tank 200. Therefore, it can be printed in segments along the model's height. During the printing process, one segment along the model's height is printed first. The height of this segment should be less than the height of the remaining resin in the material tank 200 after printing that segment. After printing one segment, the forming platform 300 is moved away from the material tank 200 by the lifting component 700 to the height of the next segment. Simultaneously, resin is added to the material tank 200, and the bottom surface of the previously formed segment is used as a base for further resin curing. The height of each segment can be the same or different, depending on the molding process.

[0077] It is understandable that multi-segment printing refers to printing a relatively long section in the height direction of the printed model, such as each segment of the printed model being 3 centimeters high. It is not a layer-by-layer printing in the height direction. Compared with layer-by-layer printing, it can still greatly reduce printing time and improve the model forming efficiency.

[0078] In a more specific implementation, such as Figure 5 As shown, the base 100 includes a support base 110, a support frame 120, and a cantilever 130. The lifting assembly 700 includes a guide rail 710, a slider 720, a second lead screw 730, a second transmission block 740, and a drive member 750. The support frame 120 is connected to the support base 110, the guide rail 710 is disposed on the support frame 120, the slider 720 is slidably connected to the guide rail 710, one end of the cantilever 130 is connected to the slider 720, and the other end of the cantilever 130 is connected to the rotary drive member 400. The second transmission block 740 is connected to the cantilever 130, the second lead screw 730 is threadedly connected to the second transmission block 740, and the drive member 750 is connected to the support base 110 and the second lead screw 730. The drive member 750 is used to drive the second lead screw 730 to rotate, thereby threading the second transmission block 740 to move the cantilever 130.

[0079] The guide rail 710 extends vertically. The second transmission block 740, driven by the threaded action of the second lead screw 730, moves the cantilever 130. The cantilever 130, guided by the slider 720 and the guide rail 710, moves vertically, thus moving the formed model vertically. In some embodiments, such as... Figure 5As shown, the cantilever 130 includes a first extension 131, a second extension 132, and a third extension 133. The first extension 131 extends horizontally and is connected to the slider 720. An opening is provided on the first extension 131, and the second transmission block 740 enters and exits the opening and is connected and fixed to the first extension 131. The second extension 132 is arranged vertically and corresponds to the inner position of the receiving cavity of the material tank 200. The two ends of the second extension 132 are connected to the first extension 131 and the third extension 133, respectively. The third extension 133 extends horizontally and is connected to the rotary drive 400. The arrangement of the first extension 131, the second extension 132, and the third extension 133 allows the molding platform 300 to be embedded in the higher material tank 200, ensuring that the material tank 200 holds sufficient printing resin and allowing for flexible adjustment of the height of the printed model.

[0080] In one implementation, such as Figure 6-7 As shown, the material tank 200 includes a bottom wall 220 and a side wall 230. The side wall 230 is located on one side of the bottom wall 220 and is also connected to the bottom wall 220. A light-transmitting area 210 is disposed on the side wall 230. The lamination manufacturing equipment also includes a bottom light source 800. A bottom light-transmitting area is disposed on the bottom wall 220, and the bottom light source 800 is located below the material tank 200, with the light outlet of the bottom light source 800 opposite to the bottom light-transmitting area.

[0081] A light-transmitting opening 113 is provided on the support surface 111, and a light-transmitting material, such as acrylic sheet or glass, is laid on the light-transmitting opening 113. Light from the bottom light source 800 can be projected into the resin through the light-transmitting opening 113 and the bottom light-transmitting area. This can be used for further curing of the model, or for continuing to cure the resin on the bottom surface of the already formed model, or for curing the basic model. In one embodiment, the model to be formed has a regular cylindrical base and fine raised patterns attached to the cylindrical base. The bottom light source 800 can irradiate the base with a circular light spot, and the forming platform 300 moves upward, layering the patterns vertically to achieve printing of the cylindrical base. Then, the cylindrical base is driven to rotate by the rotary drive 400, and the light source 500 scans the cylindrical base circumferentially layer by layer to print the fine raised patterns, thereby improving printing efficiency.

[0082] On the other hand, such as Figure 9 As shown, the present invention also provides a lamination manufacturing method, wherein the first forming area and the second forming area correspond to different printing positions on a circumferential layer of the model to be printed, the circumferential layer being a circumferential layer of the model to be printed with a preset center as the rotation center, and the lamination manufacturing method includes:

[0083] S1-1, Control the light source 500 to irradiate the printing material located in the first forming area, so that the printing material in the first forming area of ​​the model to be printed is cured and formed.

[0084] In some embodiments, the first forming region is a region adapted to the shape of the light spot emitted by the light source 500. For example, the first forming region may be a linear region matching the linear light spot emitted by a line light source, the length of which is the same as the height of the model to be printed; or, the first forming region may be a dot-shaped region matching the dot-shaped light spot emitted by a point light source, the scanning of which can form a linear region, the length of which is the same as the height of the model to be printed; or, the first forming region may be a linear region matching the linear light spot emitted by a line light source, the length of which is less than the height of the model to be printed.

[0085] In some embodiments, referring to the above-described embodiments of the additive manufacturing equipment, the rotary drive 400 drives the forming platform 300 to rotate to a first rotational position. At this time, the focal point of the light source 500 is located at the printing material in the first forming area. If it is printing the first layer of the model, the printing material in the first forming area will solidify and adhere to the forming platform 300. Alternatively, in some embodiments, a printing base pillar is provided on the forming platform 300. The printing base pillar can serve as a support for printing the model. When printing the innermost layer among multiple circumferential layers, the printing material in the first forming area will solidify and adhere to the forming platform 300 and its printing base pillar. If it is printing the middle layer among multiple circumferential layers of the model, the printing material in the first forming area will solidify and adhere to the already formed model. Thus, by adjusting the focal point of the light source 500 to scan the slice data in the vertical direction, selective solidification and forming of the printing material in the first forming area can be achieved by projecting or stopping. The focal point can be a point or a line segment.

[0086] In a specific embodiment, the printing material can be a liquid printing material such as photosensitive resin.

[0087] S1-2, Control the light source 500 to irradiate the printing material located in the second molding area so that the printing material in the second molding area of ​​the model to be printed is cured and formed.

[0088] After the first molding area has cured, the rotary drive 400 drives the molding platform 300 to rotate to the second rotation position. The focal point of the light source 500 is located on the printing material in the second molding area. The focal point of the light source 500 is adjusted to scan in the vertical direction according to the slice data. By projecting or stopping, the printing material in the second molding area is selectively cured. The cured resin in the first molding area and the second molding area can be connected or independent of each other.

[0089] Furthermore, the process of controlling the light source 500 to irradiate the printing material in the first forming area to irradiate the printing material in the second forming area can be achieved by controlling the rotary drive 400 to drive the forming platform 300 to rotate, or by controlling the light source 500 to rotate relative to the forming platform 300; or by controlling the forming platform 300 to rotate relative to the light source 500, or by controlling the light source 500 to rotate relative to the forming platform 300, and controlling the forming platform 300 to rotate relative to the light source 500.

[0090] As shown in the aforementioned embodiment of the laminated manufacturing equipment, the focal positions of the molding platform 300 and the light source 500 are rotated relative to each other by rotating the molding platform 300. Thus, as the molding platform rotates, the light rays gradually cure the resin in various areas of the circumferential layer along the rotation trajectory of the molding platform. After the molding platform finishes rotating, the model is printed in both the height and circumferential directions, achieving one-time molding in the height direction without the need for layer-by-layer stacking, thereby improving model molding efficiency and enabling rapid printing. Specifically, the molding platform can rotate less than one revolution, one revolution, or more to achieve model printing.

[0091] Alternatively, in some embodiments, a fixed molding platform and a circularly rotating light source 500 can be used to rotate the light source 500 relative to the molding platform 300, thereby achieving relative rotation of the focal positions of the molding platform 300 and the light source 500. In this way, the light can gradually cure the resin in various areas of the circumferential layer along the rotation trajectory of the light source's focal position. After the light source rotation is complete, the model is printed in both the height and circumferential directions, achieving one-time molding in the height direction without the need for layer-by-layer stacking, thus improving model molding efficiency and enabling rapid printing. Specifically, the molding platform can rotate less than one revolution, one revolution, or multiple revolutions to achieve model printing.

[0092] In one implementation, such as Figure 10 As shown, the present invention also provides another layered manufacturing method, the method comprising: S2-1, obtaining multiple circumferential layers of the model to be printed;

[0093] Multiple circumferential layers of the model to be printed can be obtained through local file reading, external storage reading, or cloud platform access. These multiple circumferential layers can be obtained by slicing the model, with a preset center as the rotation center, in a direction from the rotation center to the model edge, resulting in slice data including multiple circumferential layers.

[0094] like Figure 8 As shown, the rotation center of the model is defined as A. When the model is symmetrical about a certain axis, such as a sphere, cylinder, or disk, the rotation center of the model is defined as the axis. Figure 8The middle circle indicates the circumferential layers of the model to be formed, where r1, r2, r3...ri represent the first circumferential layer, the second circumferential layer, the third circumferential layer...the i-th circumferential layer. The slice data of any circumferential layer can provide curing information for the model's circumference. The thickness of each circumferential layer is Δr, which can be a fixed value or a variable value. For example, the thickness of each circumferential layer model gradually decreases away from the rotation center A, resulting in higher precision on the model's outer circumference. Any circumferential layer model may be a continuous cylindrical structure, a spiral line, a mesh, a ring, etc.

[0095] S2-2. Select the first circumferential layer from multiple circumferential layers, and determine the first forming area and the second forming area in the first circumferential layer.

[0096] The first molding area and the second molding area correspond to different printing positions on a circumferential layer of the model to be printed, or in other words, the first molding area and the second molding area correspond to different rotational positions of the molding platform when printing a circumferential layer of the model to be printed. The first molding area and the second molding area can each correspond to one printing position, that is, one rotational position. Referring to the embodiment of the above-described laminated manufacturing equipment, the first molding area corresponds to the first rotational position of the molding platform, and the second molding area corresponds to the second rotational position of the molding platform. Alternatively, both the first molding area and the second molding area can correspond to multiple printing positions, and the resin is cured sequentially at multiple printing positions to achieve curing within the first molding area and / or the second molding area.

[0097] S2-3. Control the light source 500 to irradiate the printing material located in the first forming area so that the printing material in the first forming area of ​​the model to be printed is cured and formed.

[0098] S2-4. Control the light source 500 to irradiate the printing material located in the second molding area so that the printing material in the second molding area of ​​the model to be printed is cured and formed.

[0099] The focal point of the light source 500 can be moved from the first forming area to the second forming area by: controlling the light source 500 to rotate relative to the forming platform 300 so that the light source 500 irradiates the printing material located in the second forming area; or, controlling the forming platform 300 to rotate relative to the light source 500 so that the light source 500 irradiates the printing material located in the second forming area; or, controlling the light source 500 to rotate relative to the forming platform 300 and controlling the forming platform 300 to rotate relative to the light source 500 so that the light source 500 irradiates the printing material located in the second forming area.

[0100] The relative movement of the molding platform 300 and the light source 500 can be such that only the molding platform 300 rotates, or the light source 500 rotates around the molding platform 300, or the molding platform 300 rotates while the light source 500 rotates around the molding platform 300, in order to improve the movement efficiency.

[0101] S2-5. Control the irradiation position of the light source 500 to move a preset distance outward relative to the first circumferential layer, so that the light source 500 irradiates the second circumferential layer, so that the printing material of the second circumferential layer of the model to be printed is solidified and formed. The second circumferential layer is a circumferential layer located outside the first circumferential layer and adjacent to the first circumferential layer.

[0102] In a specific embodiment, the length of the light spot emitted by the light source can be adapted to the height of the model to be printed. This allows for one-time curing and forming of the model in the height direction at the connection point between the molding platform and the model. As the molding platform rotates, the light rays gradually cure the resin along the rotation trajectory of the molding platform in various areas of the circumferential layer of the model. After the molding platform finishes rotating, the model is printed and formed in both the height and circumferential directions, completing the one-time forming of the model in the height direction without the need for layer-by-layer stacking, thereby improving model forming efficiency and achieving rapid printing.

[0103] In some embodiments, the distance adjustment mechanism described in the above-described embodiments of the laminated manufacturing equipment can be used to control the illumination position of the light source 500 to move outward by a preset distance relative to the first circumferential layer. At least one of the light source 500 and the forming platform 300 is connected to the distance adjustment mechanism, and the surface of the forming platform 300 used to connect the model is horizontal. The direction of movement of the distance between the forming platform 300 and the light source 500 is horizontal. Thus, by adjusting the horizontal distance between the light source 500 and the forming platform 300, or adjusting the position of the focal point of the light source 500, the horizontal distance between the focal point and the forming platform 300 increases by a preset thickness distance, which is the thickness Δr of the second circumferential layer. Steps S2-3 and S2-4 are then executed until the second circumferential layer is printed. It is understood that after the second circumferential layer is printed, the light source 500 is sequentially controlled to illuminate the third circumferential layer, the fourth circumferential layer, etc., until the entire model is printed.

[0104] The second circumferential layer can also be a circumferential layer located inside and adjacent to the first circumferential layer. By adjusting the distance, the horizontal distance between the focal point and the forming platform 300 is reduced by a preset distance, so that the focal point moves closer to the central axis, and the distance between the focal point and the inner surface of the forming model corresponding to the first circumferential layer is a preset distance. This preset distance can be a distance value in the range of [0, Δr], such as 0, Δr / 2, Δr, etc., where Δr is the thickness of the second layer model. By using a preset laser energy to control the light source to emit light, the second layer model can be formed and adhered to the inner surface of the first layer model with a forming thickness of Δr, thereby realizing printing from the outer layer to the inner layer.

[0105] When printing the first and / or second circumferential layers, it is not necessary to complete the process in one rotation, but rather through multiple rotations. That is, only a portion of the resin in the first and second molding areas is cured during one rotation, while all the resin in the first and second molding areas is cured through multiple rotations. Specifically, a spiral trajectory can be used to cure one circumferential layer.

[0106] In one embodiment, the additive manufacturing apparatus further includes a memory for storing computer programs;

[0107] A processor is used to execute a computer program to implement the steps of any of the foregoing stacking manufacturing methods.

[0108] In another aspect, the present invention also provides a computer-readable storage medium storing at least one executable instruction that causes a processor to perform the steps of the aforementioned layer fabrication method.

[0109] Based on this understanding, the technical solution of this application can be embodied in the form of a software product. The software product to be identified can be stored in a non-volatile storage medium, such as a CD-ROM, USB flash drive, or portable hard drive, and includes several instructions to enable a computer device, such as a personal computer, server, or network device, to execute the layered manufacturing method described in this application.

[0110] On one hand, the present invention provides a laminated manufacturing apparatus, comprising:

[0111] Base 100; material tank 200, which is disposed on the base 100 and includes a light-transmitting area 210 located on the side of the material tank, the material tank 200 being used to hold resin; molding platform 300, which is used to connect the mold; rotation drive 400, which is connected to the base 100 and also to the molding platform 300, the rotation drive 400 being used to drive the molding platform 300 to rotate; light source 500, the light emitted by the light source 500 passing through the light-transmitting area 210, the light source 500 emitting light to cure the resin along the rotation trajectory of the molding platform.

[0112] In some embodiments, the laminate manufacturing apparatus further includes: a distance adjustment member disposed on the base 100, the distance adjustment member being connected to at least one of the forming platform 300 and the light source 500, the distance adjustment member being used to adjust the distance between the forming platform 300 and the light source 500, the direction of movement of the adjustment of the distance between the forming platform 300 and the light source 500 being parallel to the surface of the forming platform 300 used to connect the model;

[0113] The distance adjustment component includes a first adjustment assembly and / or a second adjustment assembly. The first adjustment assembly is disposed on the base 100, and the rotary drive 400 is connected to the first adjustment assembly. The first adjustment assembly is used to adjust the distance between the forming platform 300 and the light source 500. The second adjustment assembly is disposed on the base 100, and the light source 500 is connected to the second adjustment assembly. The second adjustment assembly is used to adjust the distance between the light source 500 and the forming platform 300. In other embodiments, the laminated manufacturing equipment further includes a distance adjustment component disposed on the base 100 and connected to at least one of the forming platform 300 and the light source 500. The distance adjustment component is used to adjust the distance between the forming platform 300 and the light source 500, and the direction of movement for adjusting the distance between the forming platform 300 and the light source 500 is parallel to the surface of the forming platform 300 used to connect the model.

[0114] The distance adjustment component includes a third adjustment assembly 600, which is mounted on the base 100. The light source 500 and the material trough 200 are both connected to the third adjustment assembly 600. The third adjustment assembly 600 is used to adjust the distance between the light-transmitting area 210 and the forming platform 300, and also to adjust the synchronous movement of the light source 500 and the material trough 200. The third adjustment assembly 600 includes a power component 610, a first lead screw 620, and a first transmission block 630. The power component 610 is connected to the base 100, and the first lead screw 620... The first lead screw 620 is connected to the power component 610 and has an external thread. The first transmission block 630 includes a connecting hole with an internal thread. The first transmission block 630 is threadedly connected to the first lead screw 620 and includes a bottom surface that slides against the base 100. The material trough 200 and the light source 500 are connected to the first transmission block 630. The power component 610 is used to drive the first lead screw 620 to rotate, thereby using the thread to push the first transmission block 630 to move the material trough 200 and the light source 500 relative to the forming platform 300 in the moving direction.

[0115] In this configuration, the light outlet 510 of the light source 500 is opposite to the light transmission area 210, and there is at least one light source 500. When there is only one light source 500, the light source 500 is located on one side of the material tank 200. When there are multiple light sources 500, the multiple light sources 500 are located on different sides of the material tank 200, and the multiple light sources 500 are centrally symmetrically distributed about the rotation center of the forming platform 300. The light source 500 is a point light source or a line light source.

[0116] The lamination manufacturing equipment also includes a lifting assembly 700; the lifting assembly 700 is connected to the rotary drive 400 and the base 100 respectively, and is used to drive the forming platform 300 to move in the direction of approaching or moving away from the material tank 200.

[0117] The base 100 includes a support base 110, a support frame 120, and a cantilever 130; the lifting assembly 700 includes a guide rail 710, a slider 720, a second lead screw 730, a second transmission block 740, and a drive component 750.

[0118] The support frame 120 is connected to the support base 110. The guide rail 710 is set on the support frame 120. The slider 720 is slidably connected to the guide rail 710. One end of the cantilever 130 is connected to the slider 720. The other end of the cantilever 130 is connected to the rotary drive 400. The second transmission block 740 is connected to the cantilever 130. The second lead screw 730 is threadedly connected to the second transmission block 740. The drive 750 is connected to the support base 110 and the second lead screw 730. The drive 750 is used to drive the second lead screw 730 to rotate, thereby threading the second transmission block 740 to move the cantilever 130.

[0119] The material trough 200 includes a bottom wall 220 and a side wall 230. The side wall 230 is located on one side of the bottom wall 220 and is also connected to the bottom wall 220. The light-transmitting area 210 is disposed on the side wall 230.

[0120] The lamination manufacturing equipment also includes: a bottom light source 800; a bottom light-transmitting area is provided on the bottom wall 220, the bottom light source 800 is located below the material tank 200, and the light outlet of the bottom light source 800 is opposite to the bottom light-transmitting area.

[0121] On the other hand, the present invention also provides a layered manufacturing method, comprising: controlling a light source to irradiate printing material located in a first forming region, so as to solidify the printing material in the first forming region of the model to be printed; controlling a light source to irradiate printing material located in a second forming region, so as to solidify the printing material in the second forming region of the model to be printed, wherein the first forming region and the second forming region correspond to different printing positions on a circumferential layer of the model to be printed, and the circumferential layer is a circumferential layer of the model to be printed with a preset center as the rotation center.

[0122] The method further includes: the light spot length emitted by the light source is adapted to the height of the model to be printed; before controlling the light source to irradiate the printing material located in the first forming area so that the printing material in the first forming area of ​​the model to be printed is solidified, the method also includes: obtaining multiple circumferential layers of the model to be printed; selecting a first circumferential layer from the multiple circumferential layers, and determining a first forming area and a second forming area in the first circumferential layer;

[0123] After controlling the light source to irradiate the printing material located in the second forming area so that the printing material in the second forming area of ​​the model to be printed is solidified, the method further includes: controlling the irradiation position of the light source to move outward by a preset distance relative to the first circumferential layer so that the light source irradiates the second circumferential layer so that the printing material in the second circumferential layer of the model to be printed is solidified, wherein the second circumferential layer is a circumferential layer located outside the first circumferential layer and adjacent to the first circumferential layer.

[0124] The method of controlling the light source to irradiate the printing material located in the second forming area includes: controlling the light source to rotate relative to the forming platform so that the light source irradiates the printing material located in the second forming area; controlling the forming platform to rotate relative to the light source so that the light source irradiates the printing material located in the second forming area; or controlling the light source to rotate relative to the forming platform and controlling the forming platform to rotate relative to the light source so that the light source irradiates the printing material located in the second forming area.

[0125] The process involves dividing the model to be printed into multiple circular layers, with a preset center as the rotation center. This includes: acquiring the model to be printed and using the preset center of the model to be printed as the rotation center; slicing the model to be printed along the direction from the rotation center to the edge of the model to obtain slice data composed of multiple circular layers.

[0126] In another aspect, the present invention also provides a laminated manufacturing apparatus, comprising:

[0127] A memory for storing a computer program; a processor for executing the computer program to implement the steps of the layered manufacturing method described above.

[0128] In another aspect, the present invention also provides a computer-readable storage medium storing at least one executable instruction that causes a processor to perform the steps of the aforementioned layer fabrication method.

[0129] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An additive manufacturing apparatus, characterized by, include: Base; A material tank, which is disposed on the base, includes a light-transmitting area located on the side of the material tank, and is used to hold resin; A molding platform, used to connect the model; A rotary drive component is connected to the base and also to the molding platform, and the rotary drive component is used to drive the molding platform to rotate; A light source, the light emitted by the light source passing through the light-transmitting area, the light source emitting light to cure the resin along the rotational trajectory of the molding platform.

2. The additive manufacturing apparatus of claim 1, wherein Also includes: A distance adjustment component is disposed on the base and connected to at least one of the molding platform and the light source. The distance adjustment component is used to adjust the distance between the molding platform and the light source, and the direction of movement for adjusting the distance between the molding platform and the light source is parallel to the surface of the molding platform used to connect the model. The distance adjustment component includes a first adjustment component and / or a second adjustment component; the first adjustment component is disposed on the base, the rotation drive component is connected to the first adjustment component, and the first adjustment component is used to adjust the distance between the molding platform and the light source; the second adjustment component is disposed on the base, the light source is connected to the second adjustment component, and the second adjustment component is used to adjust the distance between the light source and the molding platform.

3. The lamination manufacturing equipment according to claim 1, characterized in that, A distance adjustment component is disposed on the base and connected to at least one of the molding platform and the light source. The distance adjustment component is used to adjust the distance between the molding platform and the light source, and the direction of movement for adjusting the distance between the molding platform and the light source is parallel to the surface of the molding platform used to connect the model. The distance adjustment component includes a third adjustment assembly, which is disposed on the base. The light source and the material trough are both connected to the third adjustment assembly. The third adjustment assembly is used to adjust the distance between the light-transmitting area and the forming platform. The third adjustment assembly is also used to adjust the synchronous movement of the light source and the material trough. The third adjustment component includes a power component, a first lead screw, and a first transmission block; The power component is connected to the base, the first lead screw is connected to the power component, the first lead screw is provided with an external thread, the first transmission block includes a connecting hole, the connecting hole is provided with an internal thread, the first transmission block is threadedly connected to the first lead screw, and the first transmission block includes a bottom surface, the bottom surface is slidably connected to the base; Both the material trough and the light source are connected to the first transmission block. The power component is used to drive the first lead screw to rotate, thereby pushing the first transmission block with a thread to move the material trough and the light source relative to the forming platform in the moving direction.

4. The lamination manufacturing equipment according to claim 1, characterized in that, The light outlet of the light source is opposite to the light-transmitting area, and the number of the light source is at least one; when the number of the light source is one, the light source is located on one side of the material tank; when the number of the light source is multiple, the multiple light sources are located on different sides of the material tank, and the multiple light sources are centrally symmetrically distributed about the rotation center of the forming platform; the light source is a point light source or a line light source.

5. The lamination manufacturing equipment according to claim 4, characterized in that, The lamination manufacturing equipment also includes a lifting assembly; The lifting assembly is connected to the rotary drive and the base respectively, and is used to drive the forming platform to move in a direction closer to or farther from the material trough; The base includes a support base, a support frame, and a cantilever; The lifting assembly includes a guide rail, a slider, a second lead screw, a second transmission block, and a driving component; The support frame is connected to the support base. The guide rail is mounted on the support frame, the slider is slidably connected to the guide rail, one end of the cantilever is connected to the slider, the other end of the cantilever is connected to the rotary drive, the second transmission block is connected to the cantilever, the second lead screw is threadedly connected to the second transmission block, and the drive is connected to the support base and the second lead screw. The driving component is used to drive the second lead screw to rotate, thereby pushing the second transmission block to move the cantilever.

6. The lamination manufacturing equipment according to claim 1, characterized in that, The material trough includes a bottom wall and a side wall, the side wall is located on one side of the bottom wall and is also connected to the bottom wall, and the light-transmitting area is disposed on the side wall; The lamination manufacturing equipment also includes: a bottom light source; A bottom light-transmitting area is provided on the bottom wall, and the bottom light source is located below the material tank, with the light outlet of the bottom light source opposite to the bottom light-transmitting area.

7. A method of additive manufacturing, characterized by, include: The light source is controlled to illuminate the printing material located in the first forming area, so that the printing material in the first forming area of ​​the model to be printed is cured and formed. The light source is controlled to irradiate the printing material located in the second forming area, so that the printing material in the second forming area of ​​the model to be printed is solidified and formed. The first forming area and the second forming area correspond to different printing positions on a circumferential layer of the model to be printed. The circumferential layer is the circumferential layer of the model to be printed with a preset center as the center of rotation.

8. The additive manufacturing method according to claim 7, wherein The length of the light spot emitted by the light source is adapted to the height of the model to be printed; before controlling the light source to irradiate the printing material located in the first forming area so that the printing material in the first forming area of ​​the model to be printed solidifies, the method further includes: Obtain multiple circumferential layers of the model to be printed; A first circumferential layer is selected from the plurality of circumferential layers, and the first forming area and the second forming area are determined in the first circumferential layer; After controlling the light source to irradiate the printing material located in the second molding area, so that the printing material in the second molding area of ​​the model to be printed solidifies and forms, the method further includes: The illumination position of the light source is controlled to move outward by a preset distance relative to the first circumferential layer, so that the light source illuminates the second circumferential layer, causing the printing material of the second circumferential layer of the model to be printed to solidify and form. The second circumferential layer is a circumferential layer located outside the first circumferential layer and adjacent to the first circumferential layer.

9. The additive manufacturing method of claim 7, wherein, Controlling the light source to irradiate the printing material located in the second forming area includes: Controlling the rotation of the light source relative to the forming platform so that the light source illuminates the printing material located in the second forming area; or The forming platform is rotated relative to the light source, causing the light source to illuminate the printing material located in the second forming area; or The light source is controlled to rotate relative to the forming platform, and the forming platform is controlled to rotate relative to the light source, so that the light source illuminates the printing material located in the second forming area.

10. An additive manufacturing apparatus, characterized by include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the laminate manufacturing method as described in any one of claims 7 to 9.

11. A computer-readable storage medium storing at least one executable instruction that causes a processor to perform the steps of the stacking manufacturing method as claimed in any one of claims 7 to 9.

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