Printing platform assembly and three-dimensional forming equipment

Abstract

The utility model discloses a printing platform assembly and three-dimensional forming equipment. The printing platform assembly comprises a printing platform body; the fixing block is configured to be connected with a lifting mechanism of the three-dimensional forming equipment; the leveling mechanism comprises a leveling support and a locking device, and the printing platform body and the fixing block are connected with the leveling support; the end, connected with the printing platform body, of the leveling support is provided with an arc-shaped fastening face, and / or the end, connected with the fixing block, of the leveling support is provided with an arc-shaped fastening face. The locking device is used for locking the leveling support and the fixing block, and / or the locking device is used for locking the leveling support and the printing platform body. Therefore, the machining precision requirement and the assembling precision requirement for the leveling mechanism, the fixing block and the printing platform body are lowered, and it can still be ensured that the printing platform body has the good leveling precision under the condition that the machining precision and the assembling precision of the leveling mechanism, the fixing block and the printing platform body are poor.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a printing platform component and a 3D forming device. Background Technology

[0002] Stereoforming equipment, such as UV-curing printers, utilizes the polymerization reaction of printing resin under light. A light source is directed according to the cross-sectional shape of the object to be formed, causing the fluid resin to solidify. During printing, the printing platform is immersed in the printing resin, maintaining a uniform gap with the release liner. Light passes through the release liner and projects onto the printing resin, causing the resin between the printing platform and the release liner to solidify, forming the first layer of the model, which adheres to the printing platform. The printing platform then lifts the solidified model upwards, peeling it off from the release liner, and then continues to solidify the next layer, layer by layer, to achieve stereoscopic printing.

[0003] The formation of the first layer of the model is crucial, requiring the printing platform's forming surface to be parallel to the release film at a precise distance to ensure good forming quality of the first layer. To achieve this, a leveling mechanism is typically used to level the printing platform. This can be achieved by adding threaded holes to the printing platform and connecting adjusting bolts through adjusting holes on a fixing block to the threaded holes. However, this type of leveling mechanism places high demands on the machining and assembly precision of the fixing block, the leveling mechanism, and the printing platform itself. Machining and assembly errors significantly impact the leveling accuracy. Utility Model Content

[0004] In view of this, the present invention provides a printing platform component and a stereolithography device, which reduces the processing accuracy requirements and assembly accuracy requirements of the leveling mechanism, the fixing block, and the printing platform body, so that even when the processing accuracy and assembly accuracy of the leveling mechanism, the fixing block, and the printing platform body are poor, the printing platform body can still ensure good leveling accuracy.

[0005] An embodiment of the first aspect of this utility model provides a printing platform assembly for a stereolithography device. The printing platform assembly includes: a printing platform body; a fixing block configured to connect with a lifting mechanism of the stereolithography device; a leveling mechanism including a leveling bracket and a locking device, wherein the printing platform body and the fixing block are respectively connected to the leveling bracket; an arc-shaped fastening surface is provided at one end of the leveling bracket connected to the printing platform body, and / or an arc-shaped fastening surface is provided at one end of the leveling bracket connected to the fixing block; and the locking device is used to lock the leveling bracket and the fixing block, and / or the locking device is used to lock the leveling bracket and the printing platform body.

[0006] Furthermore, the leveling bracket is connected to the printing platform body, and an arc-shaped fastening surface is provided at the end of the leveling bracket connected to the fixing block. The locking device is used to lock the leveling bracket and the fixing block.

[0007] Furthermore, the locking device includes a positioning element and an adjusting bolt. The leveling bracket extends into the interior of the fixing block. The leveling bracket is provided with a communicating mounting groove and a first adjusting hole. The mounting groove is used to accommodate the positioning element. The first adjusting holes are distributed on different sides of the leveling bracket. The fixing block is provided with a second adjusting hole corresponding to the first adjusting hole. The adjusting bolt is configured to pass through the second adjusting hole and the first adjusting hole and connect to the positioning element to adjust the tilt angle and / or height of the leveling bracket and lock the leveling bracket and the fixing block.

[0008] Furthermore, the arc-shaped fastening surface is located between the fixing block and the leveling bracket, and / or, the arc-shaped fastening surface is located between the leveling bracket and the positioning element; or, the fixing block includes a first opening at the bottom and a second opening at the front, the leveling bracket extends into the interior of the fixing block through the first opening, and the groove of the mounting slot is exposed in the second opening.

[0009] Furthermore, the side wall where the second adjustment hole of the leveling bracket is located is set as an arc-shaped structure, and the arc-shaped structure is configured to contact the fixing block and the positioning element.

[0010] Furthermore, the leveling mechanism also includes a first shim located between the leveling bracket and the fixing block. The first shim has a first contact surface that matches the arc-shaped structure and a second contact surface that matches the fixing block. The first contact surface is arc-shaped, and the second contact surface is flat. Alternatively, the positioning member is at least configured with an arc-shaped surface on one side facing the arc-shaped structure. A first threaded hole corresponding to the first adjusting hole is provided on the arc-shaped surface, and the adjusting bolt is configured to connect to the first threaded hole. Alternatively, the leveling bracket includes a first sidewall and a second sidewall arranged opposite to each other. The first adjusting hole includes a first sub-adjusting hole distributed on the first sidewall and a second sub-adjusting hole distributed on the second sidewall. The two sub-adjustment holes and the mounting groove include a first mounting groove communicating with the first sub-adjustment hole and a second mounting groove communicating with the second sub-adjustment hole; the positioning element includes a first positioning element located in the first mounting groove and a second positioning element located in the second mounting groove; the second adjustment hole includes a third sub-adjustment hole corresponding to the first sub-adjustment hole and a fourth sub-adjustment hole opposite to the second sub-adjustment hole; the adjusting bolt includes a first adjusting bolt and a second adjusting bolt, the first adjusting bolt passing through the third sub-adjustment hole and the first sub-adjustment hole being connected to the first positioning element, and the second adjusting bolt passing through the fourth sub-adjustment hole and the second sub-adjustment hole being connected to the second positioning element.

[0011] Furthermore, the printing platform assembly also includes a connecting component, wherein the leveling bracket is detachably connected to the printing platform body via the connecting component.

[0012] Furthermore, the connecting components include: a connecting bracket and a fastening bolt. The connecting bracket is provided with a second through hole, the top of the printing platform body is provided with a second threaded hole, the leveling bracket is provided with a mounting hole, and the fastening bolt passes through the mounting hole, the second through hole and the second threaded hole for connection.

[0013] Furthermore, a first limiting structure with concave and convex fitting is provided at the contact position between the top of the printing platform body and the bottom of the connecting frame; or, the mounting hole is connected to the mounting groove, and the head of the fastening bolt is located in the mounting groove; wherein, the fastening bolt in the same mounting groove is located on the side of the positioning member away from the adjusting bolt, and the side of the positioning member facing the fastening bolt is set as a plane.

[0014] A second aspect of this utility model provides a stereolithography apparatus, including the printing platform component of any of the foregoing claims.

[0015] The printing platform assembly and stereolithography equipment provided in this embodiment of the utility model include a fixed block connected to the lifting mechanism of the stereolithography equipment via a cantilever, a leveling mechanism comprising a leveling bracket and a locking device, a printing platform body and a fixed block respectively connected to the leveling bracket, an arc-shaped fastening surface at one end of the leveling bracket connected to the printing platform body, and / or an arc-shaped fastening surface at one end of the leveling bracket connected to the fixed block, and a locking device for locking the leveling bracket and the fixed block, and / or a locking device for locking the leveling bracket and the printing platform body. This allows the leveling bracket and the printing platform body to be locked and fixed at multiple angles, and / or allows the leveling bracket and the fixed block to be locked and fixed at multiple angles, reducing the processing accuracy and assembly accuracy requirements for the leveling bracket, locking device, fixed block, and printing platform body. Even with poor processing accuracy and assembly accuracy, the leveling mechanism, fixed block, and printing platform body can still ensure good leveling accuracy of the printing platform body, ensuring print quality.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0018] Figure 1An exploded view of a printing platform assembly provided in an embodiment of the present invention is shown.

[0019] Figure 2 An exploded view of another perspective of the printing platform assembly provided in an embodiment of the present invention is shown;

[0020] Figure 3 A schematic diagram of the printing platform component provided in an embodiment of the present invention is shown from one perspective.

[0021] Figure 4 A schematic diagram of the printing platform assembly provided in an embodiment of the present invention is shown from another perspective;

[0022] Figure 5 It shows Figure 4 A partially enlarged schematic diagram of point A in the illustrated embodiment;

[0023] Figure 6 This diagram shows a structural schematic of the printing platform component provided in an embodiment of the present invention from yet another perspective.

[0024] Figure 7 This diagram illustrates a structural schematic of the printing platform component provided in an embodiment of the present invention from another perspective.

[0025] Figure 8 A schematic diagram of the leveling bracket provided in an embodiment of the present invention is shown from one perspective.

[0026] Figure 9 This diagram shows a structural schematic of the leveling bracket provided in an embodiment of the present invention from another perspective.

[0027] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0028] 100 Printing platform body, 110 Second threaded hole, 120 First limiting structure, 200 Fixing block, 210 Second adjusting hole, 211 Third sub-adjusting hole, 212 Fourth sub-adjusting hole, 220 First opening, 230 Second opening, 240 Third opening, 300 Leveling mechanism, 310 Leveling bracket, 311 Mounting slot, 3111 First mounting slot, 3112 Second mounting slot, 312 First adjusting hole, 3121 First sub-adjusting hole, 3122 Second sub-adjusting hole, 313 Arc-shaped structure, 314 First sidewall, 315 Second sidewall, 316 Mounting hole, 32 0. Positioning component, 321. Arc-shaped surface, 322. First threaded hole, 323. First positioning component, 324. Second positioning component, 330. Adjusting bolt, 331. First adjusting bolt, 331a. First sub-adjusting bolt, 331a. Second sub-adjusting bolt, 332. Second adjusting bolt, 332a. Third sub-adjusting bolt, 332b. Fourth sub-adjusting bolt, 340. First washer, 341. First contact surface, 342. Second contact surface, 343. First through hole, 350. Second washer, 400. Connecting assembly, 410. Connecting bracket, 411. Second through hole, 412. Hollow structure, 420. Fastening bolt. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0030] An embodiment of this utility model provides a printing platform component and a stereolithography device. The printing platform component is applied to the stereolithography device, which can be a photopolymer printer, etc.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown in the first aspect of the present invention, a printing platform assembly is provided for a stereolithography device. The printing platform assembly includes: a printing platform body 100; a fixing block 200 configured to be connected to a lifting mechanism of the stereolithography device; and a leveling mechanism 300, which includes a leveling bracket 310 and a locking device. The printing platform body 100 and the fixing block 200 are respectively connected to the leveling bracket 310. One end of the leveling bracket 310 connected to the printing platform body 100 is provided with an arc-shaped fastening surface, and / or, one end of the leveling bracket 310 connected to the fixing block 200 is provided with an arc-shaped fastening surface. The locking device is used to lock the leveling bracket 310 and the fixing block 200, and / or, the locking device is used to lock the leveling bracket 310 and the printing platform body 100.

[0032] The 3D forming equipment may further include a lifting assembly, a base assembly, a fixing component, and a material trough. The lifting assembly includes a guide mechanism and a cantilever. The guide mechanism is fixed to the base assembly. The first end of the cantilever is movably connected to the guide mechanism, and the second end of the cantilever is connected to the printing platform assembly via the fixing component. Specifically, the second end of the cantilever is connected to the fixing block 200 of the printing platform assembly via the fixing component to fix the printing platform assembly entirely on the cantilever. The material trough is placed on top of the base assembly. The guide mechanism drives the cantilever to move towards or away from the material trough, thereby causing the printing platform assembly to move relative to the material trough for 3D printing. Specifically, the fixing component can be at least one of a threaded structure, a snap-fit ​​structure, a tenon and mortise structure, or a magnetic structure.

[0033] The printing platform component provided in this embodiment includes a printing platform body 100, a fixing block 200, and a leveling mechanism 300. The fixing block 200 is configured to be connected to the cantilever of the lifting mechanism of the stereolithography equipment. The leveling mechanism 300 is used to connect the printing platform body 100 and the fixing block 200 to indirectly connect the printing platform body 100 and the cantilever, and can realize the leveling operation of the printing platform body 100.

[0034] The leveling mechanism 300 includes a leveling bracket 310 and a locking device. The leveling bracket 310 can connect the printing platform body 100 and the fixing block 200. Since the fixing block 200 is connected to the cantilever of the lifting mechanism, the leveling bracket 310 and the fixing block 200 can connect the printing platform body 100 and the cantilever of the lifting mechanism.

[0035] In some examples, an arc-shaped fastening surface is provided at the end of the leveling bracket 310 connected to the printing platform body 100, allowing the relative positions of the leveling bracket 310 and the printing platform body 100 to be adjusted at multiple angles via the arc-shaped fastening surface. A locking device is used to lock the leveling bracket 310 and the printing platform body 100, enabling them to be locked and fixed at multiple angles. For example, the leveling bracket 310 and the printing platform body 100 can be locked after being tilted and leveled in the vertical direction. This reduces the requirements for the machining accuracy and assembly accuracy of the leveling bracket 310 and the printing platform body 100. Even when the machining accuracy and assembly accuracy of the leveling bracket 310 and the printing platform body 100 are poor, the printing platform body 100 can still be ensured to have good leveling accuracy, thus ensuring print quality.

[0036] In other examples, an arc-shaped fastening surface is provided at one end of the leveling bracket 310 connected to the fixing block 200, allowing the relative positions of the leveling bracket 310 and the fixing block 200 to be adjusted at multiple angles via the arc-shaped fastening surface. A locking device is used to lock the leveling bracket 310 and the fixing block 200, enabling the leveling bracket 310 and the fixing block 200 to be locked at multiple angles. For example, the leveling bracket 310 and the fixing block 200 can be locked after being tilted and leveled in the vertical direction. This reduces the requirements for the machining accuracy and assembly accuracy of the leveling bracket 310 and the fixing block 200. Even when the machining accuracy and assembly accuracy of the leveling bracket 310 and the fixing block 200 are poor, it is still possible to ensure that the printing platform body 100 has good leveling accuracy and ensure printing quality.

[0037] In some other examples, the end of the leveling bracket 310 connected to the printing platform body 100 is provided with an arc-shaped fastening surface, and a locking device is used to lock the leveling bracket 310 and the printing platform body 100. At the same time, the end of the leveling bracket 310 connected to the fixing block 200 is provided with an arc-shaped fastening surface, and a locking device is used to lock the leveling bracket 310 and the fixing block 200. This allows the leveling bracket 310 and the printing platform body 100 to be locked and fixed at multiple angles, and the leveling bracket 310 and the fixing block 200 to be locked and fixed at multiple angles. For example, the leveling bracket 310 and the printing platform body 100 can be locked after being tilted and leveled in the vertical direction. At the same time, the leveling bracket 310 and the fixing block 200 can be locked after being tilted and leveled in the vertical direction. This greatly reduces the processing accuracy and assembly accuracy requirements of the leveling bracket 310, the fixing block 200, and the printing platform body 100. Even when the processing accuracy and assembly accuracy of the leveling mechanism 300, the fixing block 200, and the printing platform body 100 are poor, the printing platform body 100 can still be guaranteed to have good leveling accuracy, thus ensuring print quality.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown in the figure, in some possible embodiments provided by this utility model, the leveling bracket 310 is connected to the printing platform body 100, and the end of the leveling bracket 310 connected to the fixing block 200 is provided with an arc-shaped fastening surface. The locking device is used to lock the leveling bracket 310 and the fixing block 200.

[0039] In this embodiment, the leveling bracket 310 is connected to the printing platform body 100, so that the positions of the leveling bracket 310 and the printing platform body 100 are relatively fixed. It can be understood that during the leveling operation, the leveling bracket 310 and the printing platform body 100 are reliably connected together, and their positions are relatively fixed, so they can be regarded as a whole. An arc-shaped fastening surface is provided at one end of the leveling bracket 310 connected to the fixing block 200. A locking device is used to lock the leveling bracket 310 and the fixing block 200. Thus, the relative position of the leveling bracket 310 and the fixing block 200 can be adjusted at multiple angles via the arc-shaped fastening surface, thereby allowing adjustment of the relative position of the printing platform body 100 and the cantilever at multiple angles. The locking device also enables the leveling bracket 310 and the fixing block 200 to be locked at multiple angles, ensuring the printing platform body 100 is fixedly locked relative to the cantilever at multiple angles. This solves the problem in related technologies where large processing and assembly errors in the leveling mechanism, fixing block, and printing platform body prevent the printing platform body from tilting and locking in a vertical plane. It reduces the processing and assembly accuracy requirements of the leveling mechanism, fixing block, and printing platform body, while ensuring good leveling accuracy. Simultaneously, it simplifies the setting of the arc-shaped fastening surface between the leveling bracket 310 and the printing platform body 100, simplifying the structure and saving manufacturing costs.

[0040] The leveling bracket 310 and the printing platform body 100 can be connected by integral molding. Alternatively, the leveling bracket 310 and the printing platform body 100 can be separate structures, connected by snap-fit, plug-in, bolt, magnetic, or welding methods.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, in some possible embodiments provided by this utility model, the fastening device includes a positioning element 320 and an adjusting bolt 330. The leveling bracket 310 extends into the interior of the fixing block 200. The leveling bracket 310 is provided with a communicating mounting groove 311 and a first adjusting hole 312. The mounting groove 311 is used to accommodate the positioning element 320. The first adjusting holes 312 are distributed on different sides of the leveling bracket 310. The fixing block 200 is provided with a second adjusting hole 210 corresponding to the first adjusting hole 312. The adjusting bolt 330 is configured to pass through the first adjusting hole 312 and the second adjusting hole 210 and connect with the positioning element 320 to adjust the tilt angle and / or height of the leveling bracket 310 and lock the leveling bracket 310 and the fixing block 200.

[0042] In this embodiment, the fastening device includes a positioning element 320 and an adjusting bolt 330. The leveling bracket 310 is connected to the printing platform body 100, so that the leveling bracket 310 and the printing platform body 100 can be reliably and fixedly connected, and their positions are relatively fixed. By providing a first adjusting hole 312 on different sides of the leveling bracket 310, and providing a second adjusting hole 210 corresponding to the first adjusting hole 312 on the fixing block 200, the positioning element 320 is installed in the mounting groove 311 of the leveling bracket 310, and the mounting groove 311 communicates with the first adjusting hole 312. In this way, when the printing platform body 100 is in a leveling posture, such as when the printing platform body 100 is parallel to the release film of the material trough, the adjusting bolt 330 can pass through the second adjusting hole 210 on the first fixing block 200, the first adjusting hole 312 on the leveling bracket 310 and the positioning member 320 in the mounting groove 311 from different directions of the fixing block 200, so as to clamp the leveling bracket 310, the fixing block 200 and the positioning member 320 together, and reliably connect the printing platform body 100 and the fixing block 200, so that the printing platform body 100 can be reliably, accurately and stably maintained in the leveling posture to ensure good molding quality.

[0043] In this embodiment, during the process of tightening the adjusting bracket and the fixing block 200, the adjusting bolt 330 passes through the first adjusting hole 312 on the leveling bracket 310 and connects to the positioning member 320 inside the leveling bracket 310. The adjusting bolt 330 and the leveling bracket 310 are not directly connected. Therefore, the possibility of the adjusting bolt 330 causing slight movement of the printing platform body 100 connected to the leveling bracket 310 during the tightening process is reduced. This avoids or reduces the situation in related technologies where the adjusting bolt needs to be directly connected to the printing platform body or the structure connected to the printing platform body, resulting in slight movement of the printing platform body during the tightening process. This reduces the impact of the adjusting bolt 330 on the position of the printing platform body 100 during the tightening process, ensuring that the printing platform body 100 can still be accurately maintained in the leveling posture after the adjusting bolt 330 is tightened, ensuring good leveling accuracy and good molding quality. Meanwhile, compared with machining the connection hole for connecting the leveling bracket 310 to the adjusting bolt 330, this method is beneficial to reduce the machining accuracy requirements of the leveling bracket 310 and reduce the machining cost of the leveling bracket 310.

[0044] The locking device has the function of locking and releasing the leveling bracket 310 and the fixing block 200. That is, the adjusting bolt 330 and the positioning member 320 cooperate to lock the leveling bracket 310 and the fixing block 200, or to release the leveling bracket 310 and the fixing block 200. Furthermore, during the process of locking and releasing the leveling bracket 310 and the fixing block 200, the adjusting bolt 330 is inserted through the first adjusting hole 312 and the second adjusting hole 210. That is, during the leveling operation, the adjusting bolt 330 will not be removed from the leveling bracket 310 and the fixing block 200. Furthermore, during the leveling operation, it can be understood that the adjusting bolt 330 and the positioning component 320 are connected. By adjusting the length of the adjusting bolt 330 extending into the positioning component 320, the locking or loosening of the leveling bracket 310 and the fixing block 200 can be switched. If the length of the adjusting bolt 330 extending into the positioning component 320 is longer, the leveling bracket 310 and the fixing block 200 can be locked. When the length of the adjusting bolt 330 extending into the positioning component 320 is shorter, the leveling bracket 310 and the fixing block 200 can be loosened, allowing them to move relative to each other for leveling operation.

[0045] Among them, such as Figure 1 and Figure 2 As shown, the first adjustment hole 312 is a strip-shaped through hole, and the second adjustment hole 210 is a strip-shaped through hole. The first adjustment hole 312 and the second adjustment hole 210 can extend in the vertical direction, so that the first adjustment hole 312 and the second adjustment hole 210 provide a certain amount of space for the adjustment bolt 330 to move in the vertical direction and to rotate in the horizontal direction. Thus, the adjustment bolt 330 and the positioning member 320 cooperate to enable the leveling bracket 310 connected to the printing platform body 100 to move in the vertical direction relative to the fixed block 200 connected to the cantilever, so as to adjust the height of the printing platform body 100. At the same time, it enables the printing platform body 100 to rotate in the horizontal plane to adjust the tilt angle of the printing platform body 100. Since the first adjustment holes 312 are distributed on different sides of the leveling bracket 310, and the second adjustment holes 210 are arranged corresponding to the first adjustment holes 312, that is, the second adjustment holes 210 are arranged on different sides of the fixing block 200, the adjusting bolts 330 can be connected to the positioning member 320 from the second adjustment holes 210 and the corresponding first adjustment holes 312 on different sides of the fixing block 200 to adjust the tilt angle and / or height of different positions of the printing platform body 100, thereby changing the tilt angle and / or height of the printing platform body 100 and realizing the leveling operation of multiple angles of the printing platform.

[0046] Furthermore, since the first adjustment hole 312 and the second adjustment hole 210 provide a certain amount of space for the vertical movement and horizontal rotation of the adjustment bolt 330, it can ensure that the adjustment bolt 330 is connected to the positioning member 320 in a suitable posture. For example, the adjustment bolt 330 can be connected to the positioning member 320 horizontally, or the adjustment bolt 330 can be connected to the positioning member 320 at an angle to the horizontal direction. During the leveling operation, a material trough can be placed on the top of the base assembly, and the bottom of the material trough is a release film. The lifting component drives the printing platform assembly to move vertically, and the interaction between the printing platform body 100 and the release film can keep the printing platform body 100 in a leveling posture. Alternatively, the material trough can be omitted from the top of the base assembly, and a display screen can be provided on the top of the base assembly. The interaction between the light-transmitting plate of the display screen and the printing platform body 100 can keep the printing platform body in a leveling posture. For example, the forming surface of the printing platform body 100 in the leveling posture is parallel to the light-transmitting plate of the display screen. In this way, during the printing process, the forming surface will be parallel to the release film located on the light-transmitting plate of the display screen. It is understandable that the printing platform body in the leveling posture can be leveled and locked by the leveling mechanism 300 to keep the printing platform body in the leveling posture.

[0047] Specifically, the following detailed explanation will be based on the example of placing the material tray on the light-transmitting plate of the display screen and performing a leveling operation on the printing platform body 100 through the interaction between the release film and the printing platform body 100. The adjusting bolt 330 has the function of locking and loosening the leveling bracket 310 and the fixing block 200. During the locking and loosening process, the adjusting bolt 330 is located within the first adjusting hole 312 and the second adjusting hole 210. Before the leveling operation, the adjusting bolt 330 can be turned to allow the leveling bracket 310 and the fixing block 200 to move relative to each other. The lifting component drives the printing platform body 100 to move downward. Since the bottom forming surface of the printing platform body 100 is not parallel to the release film, one point or one side of the forming surface will first contact the release film. As the printing platform body 100 continues to move, the release film will exert an upward thrust on the forming surface, while the angle of the fixing block 200 remains unchanged. This causes the leveling bracket 310 connected to the printing platform body 100 to move relative to the fixing block 200 under the action of the thrust. The adjusting bolt 330 will move within the first adjusting hole 312 and the second adjusting hole 210. When the printing platform body 100 descends to the preset position, the forming surface will adhere to the release film, and the printing platform body 100 will be in a leveling posture. At this time, the adjusting bolt 330 can be turned to clamp and fix the fixing block 200, the leveling bracket 310, and the positioning piece 320, thereby realizing the leveling and locking operation of the printing platform body 100.

[0048] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, in some possible embodiments provided by this utility model, there is an arc-shaped fastening surface between the fixing block 200 and the leveling bracket 310, and / or, there is an arc-shaped fastening surface between the leveling bracket 310 and the positioning member 320.

[0049] In the leveling mechanism of related technologies, the fastening surface of the adjusting bolt is usually a vertical plane. For example, the fastening surface between the printing platform body 100 and the fixing block 200 is a plane. In this case, the machining accuracy requirements of the printing platform body 100 and the fixing block 200 are relatively high. If there is a machining error in the printing platform body 100 or the fixing block 200, such as the fastening surface of the printing platform body 100 or the fixing block 200 is not level enough or is tilted, it will affect the leveling accuracy of the printing platform.

[0050] In this embodiment, the fixed block 200 and the leveling bracket 310 have an arc-shaped fastening surface, which allows the fixed block 200 and the leveling bracket 310 to be locked and fixed at multiple angles. For example, the fixed block 200 and the leveling bracket 310 can be locked after being tilted and leveled in the vertical direction. This reduces the machining accuracy requirements of the fixed block 200 and the leveling bracket 310. Even if the machining accuracy of the fixed block 200 and the leveling bracket 310 is poor, the printing platform body 100 can still be ensured to have high leveling accuracy, thus ensuring printing quality.

[0051] By having an arc-shaped fastening surface between the leveling bracket 310 and the positioning component 320, the positioning component 320 and the leveling bracket 310 can be locked and fixed at multiple angles through the arc-shaped fastening surface. For example, the leveling bracket 310 and the positioning component 320 can be locked after tilting in the vertical direction. As a result, the machining accuracy requirements of the leveling bracket 310 and the positioning component 320 can be reduced. Even if the machining accuracy of the positioning component 320 and the leveling bracket 310 is poor, the printing platform body 100 can still be ensured to have high leveling accuracy, thus ensuring printing quality.

[0052] It is understandable that there may be an arc-shaped fastening surface between the fixing block 200 and the leveling bracket 310; or, there may be an arc-shaped fastening surface between the leveling bracket 310 and the positioning member 320; or, there may be an arc-shaped fastening surface between the fixing block 200 and the leveling bracket 310, and at the same time, there may be an arc-shaped fastening surface between the leveling bracket 310 and the positioning member 320.

[0053] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, in some possible embodiments provided by this utility model, the side wall where the second adjustment hole 210 of the leveling bracket 310 is located is set as an arc-shaped structure 313, which is configured to contact the fixing block 200 and the positioning member 320. That is, the leveling bracket 310 contacts the fixing block 200 through the arc-shaped structure 313, thus, when the locking device locks the leveling bracket 310 and the fixing block 200, the leveling bracket 310 and the fixing block 200 have an arc-shaped fastening surface through the arc-shaped structure 313. Similarly, the leveling bracket 310 contacts the positioning member 320 through the arc-shaped structure 313, thus, when the locking device locks the leveling bracket 310 and the fixing block 200, the leveling bracket 310 and the positioning member 320 have an arc-shaped fastening surface through the arc-shaped structure 313.

[0054] In this embodiment, the arc-shaped structure 313 provides an arc-shaped fastening surface between the fixing block 200 and the leveling bracket 310, as well as between the leveling bracket 310 and the positioning member 320. Therefore, the machining accuracy requirements for the fixing block 200, the leveling bracket 310, and the positioning member 320 can be further reduced. Even when the machining accuracy of the fixing block 200, the leveling bracket 310, and the positioning member 320 is poor, the printing platform body 100 can still be ensured to have high leveling accuracy, reducing the difficulty of leveling and machining accuracy, facilitating operation, and helping to reduce manufacturing costs.

[0055] like Figure 1 , Figure 2 , Figure 5 As shown, in some possible embodiments provided by this utility model, the leveling mechanism 300 further includes a first shim 340 located between the leveling bracket 310 and the fixing block 200. The first shim 340 is provided with a first through hole 343 corresponding to the first adjustment hole 312, a first contact surface 341 matching the arc-shaped structure 313, and a second contact surface 342 matching the fixing block 200. The first contact surface 341 is arc-shaped, and the second contact surface 342 is flat. Thus, the adjusting bolt 330 is connected to the positioning member 320 through the second adjustment hole 210 of the fixing block 200, the first through hole 343 of the first shim 340, and the first adjustment hole 312 of the leveling bracket 310, so as to lock and fix the fixing block 200 and the leveling bracket 310.

[0056] In this embodiment, the first shim 340 enables indirect contact between the leveling bracket 310 and the fixing block 200, ensuring an arc-shaped fastening surface between them. This design eliminates the need to alter the original structure of the fixing block 200, facilitating its processing and production and reducing manufacturing costs. Furthermore, designing the first contact surface 341 of the first shim 340 as arc-shaped and the second contact surface 342 as flat facilitates processing and implementation.

[0057] Understandably, the number of first shims 340 is equal to the number of first adjusting holes 312, and they are placed between the corresponding first adjusting holes 312 and second adjusting holes 210. Specifically, the first through hole 343 is circular and matches the rod portion of the adjusting bolt 330.

[0058] like Figure 1 , Figure 2 , Figure 5 As shown, in some possible embodiments provided by this utility model, the positioning member 320 is configured with an arc-shaped surface 321 on at least one side facing the arc-shaped structure 313. The arc-shaped surface 321 is provided with a first threaded hole 322 corresponding to the first adjusting hole 312, and the adjusting bolt 330 is configured to connect with the first threaded hole 322. Thus, the adjusting bolt 330 is connected to the first threaded hole 322 on the positioning member 320 by passing through the second adjusting hole 210 of the fixing block 200, the first through hole 343 of the first washer 340, the first adjusting hole 312 of the leveling bracket 310, and the second adjusting hole 210 of the fixing block 200, so as to lock and fix the fixing block 200 and the leveling bracket 310.

[0059] The positioning element 320 has an arc-shaped surface 321 facing the arc-shaped structure 313. The shape of the arc-shaped surface 321 matches the shape of the arc-shaped structure 313 on the leveling bracket 310, so that the arc-shaped surface 321 on the positioning element 320 and the arc-shaped structure 313 on the leveling bracket 310 can contact and cooperate. When the locking device locks the leveling bracket 310 and the fixing block 200, the arc-shaped surface 321 of the positioning element 320 and the arc-shaped structure 313 on the leveling bracket 310 have arc-shaped fastening surfaces. In other words, by cooperating with the arc-shaped surface 321 and the arc-shaped structure 313, an arc-shaped fastening surface is formed between the leveling bracket 310 and the positioning member 320. This ensures that the adjusting bolt 330 is connected to the positioning member 320 during the locking process, but not to the leveling bracket 310 that connects to the printing platform body 100. This allows the positioning member 320 to achieve the dual functions of an arc-shaped fastening surface and connection with the adjusting bolt 330 in a single structure. This simplifies the structure, meets the design requirements of a compact structure and small footprint for the leveling mechanism 300, and helps to save manufacturing costs.

[0060] The entire periphery of the positioning member 320 can be an arc-shaped surface 321, such as the positioning member 320 being a cylindrical positioning shaft, or the cross-section of the positioning member 320 perpendicular to the axis being circular; or, the side of the positioning member 320 facing the arc-shaped structure 313 is an arc-shaped surface, and the side away from the arc-shaped structure 313 is an arc-shaped surface, such as the cross-section of the positioning member 320 perpendicular to the axis being racetrack-shaped, or, a portion of the periphery of the positioning member 320 is an arc-shaped surface 321, such as the side of the positioning member 320 facing the arc-shaped structure 313 being an arc-shaped surface 321, or the cross-section of the positioning member 320 perpendicular to the axis being D-shaped.

[0061] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, in some possible embodiments provided by this utility model, the leveling bracket 310 includes a first sidewall 314 and a second sidewall 315 arranged opposite to each other; the first adjustment hole 312 includes a first sub-adjustment hole 3121 distributed on the first sidewall 314 and a second sub-adjustment hole 3122 distributed on the second sidewall 315; the mounting groove 311 includes a first mounting groove 3111 communicating with the first sub-adjustment hole 3121 and a second mounting groove 3112 communicating with the second sub-adjustment hole 3122; the positioning member 320 includes a first positioning member 323 located in the first mounting groove 3111 and a positioning member 323 located in the second mounting groove. The second positioning element 324 is located within 3112; the second adjusting hole 210 includes a third sub-adjusting hole 211 corresponding to the first sub-adjusting hole 3121 and a fourth sub-adjusting hole 212 corresponding to the second sub-adjusting hole 3122; the adjusting bolt 330 includes a first adjusting bolt 331 and a second adjusting bolt 332. The first adjusting bolt 331 passes through the third sub-adjusting hole 211 on the fixing block 200 and the first sub-adjusting hole 3121 on the leveling bracket 310 from the first side wall 314 of the fixing block 200 and connects with the first positioning element 323, thereby locking the first side of the fixing block 200 to the first side of the leveling bracket 310. The second adjusting bolt 332 passes through the fourth sub-adjusting hole 212 on the second side of the fixing block 200 and the second sub-adjusting hole 3122 on the leveling bracket 310 and connects with the second positioning element 324, thereby locking the second side of the fixing block 200 to the second side of the leveling bracket 310.

[0062] The first sidewall 314 and the second sidewall 315 can be understood as being arranged on both sides of the leveling bracket 310 along the width direction of the leveling bracket 310, and the width direction of the leveling bracket 310 can be as follows: Figure 1 and Figure 2 As shown in X. In this embodiment, the first adjusting bolt 331 and the second adjusting bolt 332 can be locked and fixed to the leveling bracket 310 from both sides of the fixing block 200, thereby enabling the leveling operation of the tilt angle of the printing platform body 100 along the X direction.

[0063] Specifically, the example is taken with the first sidewall 314 located on the left side of the leveling bracket 310 and the second sidewall 315 located on the right side of the adjustment bracket. The forming surface of the printing platform body 100 is approximately rectangular, and the printing platform body 100 includes a left side, a right side, a front side, and a rear side. During the leveling process, when the right side of the forming surface is lower than the left side, the second sidewall 315 of the leveling bracket 310 on the right side moves relative to the fixing block 200 by a first relative displacement due to the pushing action of the release film. The second adjusting bolt 330 moves within the first adjusting hole 312 and the second adjusting hole 210. Meanwhile, the first sidewall 314 of the leveling bracket 310 on the left side moves relative to the fixing block 200 by a second relative displacement or remains stationary. Because the right side of the forming surface is lower than the left side, the second relative displacement is less than the first relative displacement, causing the left and right ends of the printing platform body 100 to rotate and achieve a leveling posture. It is understandable that after the printing platform body 100 is in the leveling posture, the leveling operation of the printing platform body 100 can be achieved by locking and fixing the first adjusting bolt 330 and the second adjusting bolt 330 respectively.

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, in some possible embodiments provided by this utility model, two first sub-adjustment holes 3121 are arranged at intervals on the first sidewall 314, and two second sub-adjustment holes 3122 are arranged at intervals on the second sidewall 315.

[0065] The length direction of the leveling bracket 310 can be as follows: Figure 1 and Figure 2 As shown in the diagram, the Y direction can be understood as the front-to-back direction of the leveling bracket 310. In this embodiment, two first sub-adjustment holes 3121 are spaced apart along the Y direction on the first sidewall 314. There are two first adjusting bolts 330, which can be connected to different positions of the first positioning member 323 along the Y direction through the two first sub-adjustment holes 3121. Two second adjusting holes 210 are spaced apart along the Y direction on the second sidewall 315. There are two second adjusting bolts 330, which can be connected to different positions of the second positioning member 324 along the Y direction through the two second sub-adjustment holes 3122.

[0066] Specifically, two first sub-adjustment holes 3121 are arranged along the front-rear direction on the first sidewall 314, such as the first sub-adjustment hole 3121a located on the front side of the first sidewall 314 and the first sub-adjustment hole 3121b located on the rear side of the first sidewall 314. The first adjusting bolt 331 includes a first sub-adjustment bolt 331a corresponding to the first sub-adjustment hole 3121a and a second sub-adjustment bolt 331b corresponding to the first sub-adjustment hole 3121b. Two second sub-adjustment holes 3122 are arranged along the front-rear direction on the second sidewall 315, such as the second sub-adjustment hole 3122a located on the front side of the second sidewall 315 and the second sub-adjustment hole 3122b located on the rear side of the second sidewall 315. The second adjusting bolt 332 includes a third sub-adjustment bolt 332a corresponding to the second sub-adjustment hole 3122a and a fourth sub-adjustment bolt 332b corresponding to the second sub-adjustment hole 3122b.

[0067] The forming surface of the printing platform body 100 is approximately rectangular. The printing platform body 100 includes a left side, a right side, a front side, and a rear side. The first sub-adjusting bolt 331a is close to the left front side of the printing platform body 100, the second sub-adjusting bolt 331b is close to the left rear side of the printing platform body 100, the third sub-adjusting bolt 332a is close to the right front side of the printing platform body 100, and the fourth sub-adjusting bolt 332b is close to the right rear side of the printing platform body 100. During the leveling process, when the front of the forming surface is lower than the rear, the front of the forming surface will first contact the release film. Through the pushing action of the release film, the first sub-adjusting bolt 331a and the third sub-adjusting bolt 332a will move a third relative displacement relative to the leveling bracket 310, and the second sub-adjusting bolt 331b and the fourth sub-adjusting bolt 332b will move a fourth relative displacement relative to the leveling bracket 310 or not move. Since the front of the forming surface is lower than the rear, the fourth relative displacement will be less than the third relative displacement, causing the front and rear ends of the printing platform body 100 to rotate and level.

[0068] In this embodiment, the first sub-adjusting bolt 331a, the second sub-adjusting bolt 331b, the third sub-adjusting bolt 332a, and the fourth sub-adjusting bolt 332b enable the printing platform body 100 to be leveled from multiple directions, namely the left front side, the right front side, the left rear side, and the right rear side. That is, the leveling operation of the printing platform body 100 can be realized from the above four directions, and the four-point leveling operation of the printing platform body 100 can be realized, so that the tilt angle of the printing platform body 100 can be flexibly adjusted and the accuracy of leveling can be guaranteed.

[0069] like Figure 1 , Figure 2 , Figure 5As shown, in some possible embodiments provided by this utility model, the leveling mechanism 300 further includes a second shim 350, which is located outside the fixing block 200 and between the fixing block 200 and the adjusting bolt 330. For example, the adjusting bolt 330 includes a head and a rod, the rod passing through the second adjusting hole 210, the first adjusting hole 312 and connecting to the positioning member 320, and the head being engaged in the second adjusting hole 210. The second shim 350 is located outside the fixing block 200, between the head of the adjusting bolt 330 and the fixing block 200, to improve the reliability and stability of the connection between the two. It is understood that the number of second shims 350 is equal to the number of second adjusting holes 210.

[0070] like Figure 1 , Figure 2 As shown, in some possible embodiments of this utility model, the printing platform assembly further includes a connecting component 400, through which the leveling bracket 310 is detachably connected to the printing platform body 100. The connecting component 400 enables a detachable connection between the printing platform body 100 and the leveling bracket 310, facilitating disassembly, assembly, and maintenance of both, improving efficiency, and saving maintenance costs. Simultaneously, the connecting component 400 creates a certain distance between the printing platform body 100 and the leveling bracket 310, thereby creating a certain distance between the printing platform body 100 and the fixing block 200, preventing interference between the printing platform body 100 and the fixing block 200 during leveling operations, which would affect leveling accuracy.

[0071] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in some possible embodiments provided by this utility model, the connecting assembly 400 includes: a connecting frame 410 and a fastening bolt 420. The connecting frame 410 is provided with a second through hole 411, the top of the printing platform body 100 is provided with a second threaded hole 110, and the leveling bracket 310 is provided with a mounting hole 316. The fastening bolt 420 passes through the mounting hole 316, the second through hole 411, and the second threaded hole 110 for connection. Thus, the leveling bracket 310 and the printing platform body 100 can be reliably connected through the connecting frame 410 and the fastening bolt 420, which is convenient to operate and has a simple structure.

[0072] The mounting hole 316 can be a through hole, such as the mounting hole 316 penetrating the leveling bracket 310 in the vertical direction. In this way, the fastening bolt 420 can be operated on the top of the leveling bracket 310. For example, the fastening bolt 420 can pass through the mounting hole 316 and the second through hole 411 of the connecting bracket 410 from the top of the leveling bracket 310, and then connect to the threaded hole on the printing platform body 100 to realize the connection operation between the leveling bracket 310 and the printing platform body 100, which is convenient for disassembly.

[0073] like Figure 2 As shown, in some possible embodiments provided by this utility model, a first limiting structure 120 with concave and convex fitting is provided at the contact position between the top of the printing platform body 100 and the bottom of the connecting frame 410. Thus, the first limiting structure 120 can pre-position the assembly of the printing platform body 100 and the connecting frame 410, thereby improving the assembly efficiency and assembly accuracy of the printing platform body 100 and the connecting frame 410, and improving the connection efficiency between the printing platform body 100 and the leveling bracket 310.

[0074] Specifically, the first limiting structure 120 may include a groove structure located at the top of the printing platform body 100, and the shape of the bottom of the connecting frame 410 matches the groove structure, thus achieving a limiting function; or, the first limiting structure 120 may include a groove structure located at the top of the printing platform body 100 and a protrusion structure located at the bottom of the connecting frame 410, achieving limiting through the groove structure and the protrusion structure. Alternatively, the first limiting structure 120 may include a protrusion structure located at the top of the printing platform body 100 and a groove structure located at the bottom of the connecting frame 410, achieving limiting through the protrusion structure and the groove structure.

[0075] In some possible embodiments provided by this utility model, a second limiting structure with concave and convex fitting can be provided at the contact position between the top of the connecting bracket 410 and the bottom of the adjusting bracket. Thus, the assembly of the adjusting bracket and the connecting bracket 410 can be pre-positioned through the second limiting structure, so as to improve the assembly efficiency and assembly accuracy of the adjusting bracket and the connecting bracket 410, and improve the connection efficiency between the printing platform body 100 and the leveling bracket 310.

[0076] Specifically, the second limiting structure may include a groove structure located at the top of the connecting frame 410, and the shape of the bottom of the leveling bracket 310 matches the groove structure, thus achieving a limiting effect; or, the second limiting structure may include a groove structure located at the top of the connecting frame 410 and a protrusion structure located at the bottom of the leveling bracket 310, achieving limiting through the groove structure and the protrusion structure. Alternatively, the second limiting structure may include a protrusion structure located at the top of the connecting frame 410 and a groove structure located at the bottom of the leveling bracket 310, achieving limiting through the protrusion structure and the groove structure. It is understood that in some embodiments, the second limiting structure may not be provided, and the top of the connecting frame 410 and the bottom of the leveling bracket 310 may be pre-positioned directly through a plane.

[0077] like Figure 1 As shown, the connecting frame 410 is further provided with a hollow structure 412. The hollow structure 412 can reduce the material used in the connecting frame 410, reduce the weight of the connecting frame 410, and reduce the manufacturing cost of the connecting frame 410.

[0078] In some possible embodiments provided by this utility model, the mounting hole 316 communicates with the mounting groove 311, and the head of the fastening bolt 420 is located in the mounting groove 311. This arrangement ensures that the head of the fastening bolt 420 is located in the mounting groove 311 and does not occupy the external space of the leveling bracket 310. This makes the layout of the connecting component 400 and the leveling mechanism 300 more compact, which can meet the design requirements of compact structure and small size of the printing platform component. At the same time, it can improve the neatness and aesthetics of the appearance of the printing platform component.

[0079] Furthermore, the fastening bolt 420 within the same mounting groove 311 is located on the side of the positioning member 320 away from the adjusting bolt, ensuring that the positioning member 320 is close to the adjusting bolt 330 for easy connection. The side of the positioning member 320 facing the fastening bolt 420 is designed as a plane, which provides good limiting. By contacting the fastening bolt 420 with the plane on the positioning member 320, the rotation of the positioning member 320 relative to the leveling bracket 310 is limited, ensuring accurate alignment between the first threaded hole 322 on the positioning member 320 and the first adjusting hole 312 on the leveling bracket 310. This ensures that the adjusting bolt 330, after passing through the first adjusting hole 312, can smoothly and accurately connect to the first bolt hole on the positioning member 320. Simultaneously, this design allows the positioning member 320 to be D-shaped, facilitating machining.

[0080] like Figure 1 and Figure 2As shown, in some possible embodiments provided by this utility model, the fixing block 200 includes a first opening 220 at the bottom and a second opening 230 at the front. The leveling bracket 310 extends into the interior of the fixing block 200 through the first opening 220, and the groove of the mounting slot 311 is exposed in the second opening 230.

[0081] The first opening 220 facilitates the assembly of the leveling bracket 310 and the fixing block 200, allowing the leveling bracket 310 to extend from the first opening 220 at the bottom of the fixing block 200 into the interior of the fixing block 200. The first opening 220 also ensures that the printing platform body 100 connected to the bottom of the leveling bracket 310 and the fixing block 200 do not interfere with each other.

[0082] The second opening 230 allows the positioning component 320 to be inserted into or removed from the mounting slot 311 of the mounting bracket through the second opening 230 in front of the leveling bracket 310, making operation convenient and facilitating the assembly and disassembly of the leveling mechanism 300 and the fixing block 200.

[0083] Specifically, during the assembly of the printing platform components, the leveling bracket 310 and the printing platform body 100 can be assembled first. For example, the connecting bracket 410 is placed on top of the printing platform body 100, so that the second through hole 411 of the connecting bracket 410 is opposite to the second threaded hole 110 on the printing platform body 100; the leveling bracket 310 is placed on top of the connecting bracket 410, so that the mounting hole 316 on the leveling bracket 310 is opposite to the second through hole 411; the fastening bolt 420 passes through the mounting hole 316, the second through hole 411 and the second threaded hole 110 from the top of the leveling bracket 310 to connect and fix the printing platform body 100 and the leveling bracket 310.

[0084] Then, the fixedly connected printing platform body 100 and leveling bracket 310 are integrated as a whole, extending from the first opening 220 at the bottom of the fixing block 200 into the interior of the fixing block 200, so that the first adjustment hole 312 on the leveling bracket 310 is opposite to the second adjustment hole 210 of the fixing block 200, and the groove of the mounting groove 311 on the leveling bracket 310 is opposite to the second opening 230 of the fixing block 200. The positioning member 320 is inserted into the mounting groove 311 through the second opening 230, so that the plane of the positioning member 320 is close to the connecting bolt, ensuring that the first threaded hole 322 of the positioning member 320 is opposite to the first adjustment hole 312. A first shim 340 is installed between the fixing block 200 and the leveling bracket 310, so that the first through hole 343 of the first shim 340 is opposite to the first adjustment hole 312. It is understood that a second shim 350 can be installed on the outside of the fixing block 200 at a position opposite to the second adjustment hole 210. Then, the adjusting bolt 330 is passed from the outside of the fixing block 200 through the second washer 350, the second adjusting hole 210 on the fixing block 200, the first through hole 343 on the first washer 340, and the first adjusting hole 312 on the leveling bracket 310, and connected to the first threaded hole 322 of the positioning member 320, so that the fixing block 200 and the leveling bracket 310 can be locked together.

[0085] A second aspect of this utility model provides a stereolithography apparatus, including a printing platform assembly from any of the foregoing embodiments. Since the stereolithography apparatus includes the printing platform assembly from any of the foregoing embodiments, it possesses all the technical effects of the aforementioned printing platform assembly, which will not be elaborated further here.

[0086] The 3D forming equipment also includes a lifting assembly, which comprises a guide mechanism and a cantilever. The first end of the cantilever is movably connected to the guide mechanism, and the second end of the cantilever is connected to the fixing block 200 of the printing platform assembly via a fixing member. Specifically, the fixing member can be a fixing bolt, meaning the fixing block 200 and the cantilever can be connected by a fixing bolt. Alternatively, the fixing block 200 and the cantilever can be connected by other structures; this invention does not impose specific limitations on these connections.

[0087] Specifically, such as Figure 6 and Figure 7 As shown, the top of the fixing block 200 is provided with a third opening 240, through which the fixing member can connect the fixing block 200 to the cantilever.

[0088] Specifically, such as Figures 1 to 9 As shown, the present invention provides the following embodiments:

[0089] Reference numeral 1. A printing platform assembly for use in a stereolithography device, the printing platform assembly comprising: a printing platform body 100; a fixing block 200 configured to connect to a lifting mechanism of the stereolithography device; a leveling mechanism 300 including a leveling bracket 310 and a locking device, wherein the printing platform body 100 and the fixing block 200 are respectively connected to the leveling bracket 310; one end of the leveling bracket 310 connected to the printing platform body 100 is provided with an arc-shaped fastening surface, and / or, one end of the leveling bracket 310 connected to the fixing block 200 is provided with an arc-shaped fastening surface; the locking device is used to lock the leveling bracket 310 and the fixing block 200, and / or, the locking device is used to lock the leveling bracket 310 and the printing platform body 100.

[0090] According to the printing platform assembly of No. 1, the leveling bracket 310 is connected to the printing platform body 100. The end of the leveling bracket 310 connected to the fixing block 200 is provided with an arc-shaped fastening surface. The locking device is used to lock the leveling bracket 310 and the fixing block 200.

[0091] According to the printing platform assembly of reference numeral 2, the locking device includes a positioning element 320 and an adjusting bolt 330. The leveling bracket 310 extends into the interior of the fixing block 200. The leveling bracket 310 is provided with a communicating mounting groove 311 and a first adjusting hole 312. The mounting groove 311 is used to accommodate the positioning element 320. The first adjusting hole 312 is distributed on different sides of the leveling bracket 310. The fixing block 200 is provided with a second adjusting hole 210 corresponding to the first adjusting hole 312. The adjusting bolt 330 is configured to pass through the second adjusting hole 210 and the first adjusting hole 312 and connect to the positioning element 320 to adjust the tilt angle and / or height of the leveling bracket 310 and lock the leveling bracket 310 and the fixing block 200.

[0092] Reference numeral 4, according to the printing platform assembly of reference numeral 3, the arc-shaped fastening surface is located between the fixing block 200 and the leveling bracket 310, and / or, the arc-shaped fastening surface is located between the leveling bracket 310 and the positioning element 320.

[0093] According to the printing platform assembly of reference numeral 5, the fixing block 200 includes a first opening 220 at the bottom and a second opening 230 at the front, the leveling bracket 310 extends through the first opening 220 into the interior of the fixing block 200, and the slot of the mounting groove 311 is exposed in the second opening 230.

[0094] According to the printing platform assembly of reference 3, the side wall where the second adjustment hole 210 of the leveling bracket 310 is located is set as an arc-shaped structure 313, and the arc-shaped structure 313 is configured to contact the fixing block 200 and the positioning member 320.

[0095] According to the printing platform assembly of reference numeral 6, the leveling mechanism 300 further includes a first shim 340 located between the leveling bracket 310 and the fixing block 200. The first shim 340 is provided with a first through hole 343 corresponding to the first adjustment hole 312, a first contact surface 341 matching the arc-shaped structure 313, and a second contact surface 342 matching the fixing block 200. The first contact surface 341 is arc-shaped, and the second contact surface 342 is planar.

[0096] Reference numeral 8. According to the printing platform assembly of reference numeral 6, the positioning element 320 is configured with an arc-shaped surface 321 on at least one side facing the arc-shaped structure 313. The arc-shaped surface 321 is provided with a first threaded hole 322 corresponding to the first adjusting hole 312. The adjusting bolt 330 is configured to connect to the first threaded hole 322.

[0097] Reference numeral 9, according to the printing platform assembly of reference numeral 6, the leveling bracket 310 includes a first sidewall 314 and a second sidewall 315 arranged opposite to each other, the first adjustment hole 312 includes a first sub-adjustment hole 3121 distributed on the first sidewall 314 and a second sub-adjustment hole 3122 distributed on the second sidewall 315, the mounting groove 311 includes a first mounting groove 3111 communicating with the first sub-adjustment hole 3121 and a second mounting groove 3112 communicating with the second sub-adjustment hole 3122; the positioning member 320 includes a first positioning member 323 located in the first mounting groove 3111 and a positioning member 323. The second positioning member 324 is located in the second mounting groove 3112; the second adjustment hole 210 includes a third sub-adjustment hole 211 corresponding to the first sub-adjustment hole 3121 and a fourth sub-adjustment hole 212 corresponding to the second sub-adjustment hole 3122; the adjustment bolt 330 includes a first adjustment bolt 331 and a second adjustment bolt 332, the first adjustment bolt 331 passes through the third sub-adjustment hole 211 and the first sub-adjustment hole 3121 and is connected to the first positioning member 323, and the second adjustment bolt 332 passes through the fourth sub-adjustment hole 212 and the second adjustment hole 3122 and is connected to the second positioning member 324.

[0098] Reference numeral 10, the printing platform assembly according to reference numeral 3, further includes: a connecting assembly 400, and a leveling bracket 310 detachably connected to the printing platform body 100 via the connecting assembly 400.

[0099] According to the printing platform assembly of reference numeral 10, the connecting assembly 400 includes: a connecting bracket 410 and a fastening bolt 420. The connecting bracket 410 is provided with a second through hole 411. The top of the printing platform body 100 is provided with a second threaded hole 110. The leveling bracket 310 is provided with a mounting hole 316. The fastening bolt 420 passes through the mounting hole 316, the second through hole 411 and the second threaded hole 110 for connection.

[0100] Reference numeral 12, according to the printing platform assembly of reference numeral 11, a first limiting structure 120 with concave and convex fitting is provided at the position where the top of the printing platform body 100 and the bottom of the connecting frame 410 contact each other.

[0101] Reference numeral 13, according to the printing platform assembly of reference numeral 11, the mounting hole 316 communicates with the mounting groove 311, and the head of the fastening bolt 420 is located in the mounting groove 311; wherein, the fastening bolt 420 in the same mounting groove 311 is located on the side of the positioning member 320 away from the adjusting bolt, and the side of the positioning member 320 facing the fastening bolt 420 is set as a plane.

[0102] Specifically, such as Figures 1 to 9 As shown, the present invention also provides the following embodiments:

[0103] Reference numeral 14, a stereolithography apparatus comprising a printing platform assembly as described in any of reference numerals 1 to 13.

[0104] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0105] Various modifications and variations can be made to this invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A printing platform component for stereolithography equipment, characterized in that, The printing platform assembly comprises: a printing platform body; a fixing block configured to be connected with a lifting mechanism of the stereoscopic forming equipment; a leveling mechanism comprising a leveling support and a locking device, the printing platform body and the fixing block being connected with the leveling support respectively; an arc-shaped fastening surface is arranged at one end of the leveling support connected with the printing platform body, and / or an arc-shaped fastening surface is arranged at one end of the leveling support connected with the fixing block; the locking device is used for locking the leveling support and the fixing block, and / or the locking device is used for locking the leveling support and the printing platform body.

2. The printing platform assembly according to claim 1, wherein the leveling support is connected with the printing platform body, one end of the leveling support connected with the fixing block is provided with the arc-shaped fastening surface, and the locking device is used for locking the leveling support and the fixing block.

3. The printing platform assembly according to claim 2, wherein the locking device comprises a positioning piece and an adjusting bolt, the leveling support extends into the interior of the fixing block, the leveling support is provided with a mounting groove and a first adjusting hole in communication, the mounting groove is used for accommodating the positioning piece, the first adjusting hole is distributed on different sides of the leveling support, the fixing block is provided with a second adjusting hole corresponding to the first adjusting hole, the adjusting bolt is configured to pass through the second adjusting hole, the first adjusting hole and the positioning piece to be connected, so as to adjust the inclination angle and / or height of the leveling support and lock the leveling support and the fixing block.

4. The printing platform assembly according to claim 3, wherein the arc-shaped fastening surface is located between the fixing block and the leveling support, and / or the arc-shaped fastening surface is located between the leveling support and the positioning piece; or the fixing block comprises a first opening at the bottom and a second opening at the front, the leveling support extends into the interior of the fixing block through the first opening, and the slot of the mounting groove is exposed in the second opening.

5. The printing platform assembly according to claim 3, wherein a side wall where the second adjusting hole of the leveling support is located is provided in an arc-shaped structure, and the arc-shaped structure is configured to be in contact with the fixing block and the positioning piece.

6. The printing platform assembly according to claim 5, wherein the leveling mechanism further comprises a first gasket between the leveling support and the fixing block, the first gasket is provided with a first contact surface matched with the arc-shaped structure and a second contact surface matched with the fixing block, the first contact surface is arc-shaped, and the second contact surface is planar; or at least one side of the positioning piece facing the arc-shaped structure is provided in an arc-shaped surface, the arc-shaped surface is provided with a first threaded hole corresponding to the first adjusting hole, and the adjusting bolt is configured to be connected with the first threaded hole. Or, the leveling support includes oppositely arranged first and second side walls, the first adjusting hole includes first sub-adjusting holes distributed on the first side wall and second sub-adjusting holes distributed on the second side wall, the mounting slot includes a first mounting slot in communication with the first sub-adjusting holes and a second mounting slot in communication with the second sub-adjusting holes; the positioning member includes a first positioning member located in the first mounting slot and a second positioning member located in the second mounting slot; the second adjusting hole includes third sub-adjusting holes corresponding to the first sub-adjusting holes and fourth sub-adjusting holes corresponding to the second sub-adjusting holes; the adjusting bolt includes a first adjusting bolt and a second adjusting bolt, the first adjusting bolt is connected with the first positioning member through the third sub-adjusting holes and the first sub-adjusting holes, and the second adjusting bolt is connected with the second positioning member through the fourth sub-adjusting holes and the second sub-adjusting holes.

7. The print platform assembly of claim 3, wherein, Also comprising: A connecting assembly, the leveling support is detachably connected with the printing platform body through the connecting assembly.

8. The print platform assembly of claim 7, wherein, The connecting assembly includes: A connecting frame and a fastening bolt, the connecting frame is provided with a second through hole, the top of the printing platform body is provided with a second threaded hole, the leveling support is provided with a mounting hole, and the fastening bolt is connected with the second threaded hole through the mounting hole and the second through hole.

9. The printing platform assembly according to claim 8, wherein, The top of the printing platform body and the bottom of the connecting frame are provided with first limiting structures in a concave-convex fitting manner at a position where they are in contact with each other. Or, the mounting hole is in communication with the mounting slot, and the head of the fastening bolt is located in the mounting slot; wherein the fastening bolt in the same mounting slot is located on the side of the positioning member away from the adjusting bolt, and the side of the positioning member facing the fastening bolt is provided as a plane.

10. A stereolithography apparatus, characterized in that The printing platform assembly includes any one of claims 1-9.

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