Printing platform and 3D printer

Abstract

The utility model discloses a printing platform and a 3D printer, the printing platform is matched with a trough, the printing platform comprises a platform main body and at least two contact parts arranged on the platform main body, and the contact parts are configured to abut against the trough so that the bottom of the platform main body can be parallel to or tend to be parallel to the trough. The printing platform can be leveled through self deformation during assembly, the overall structure is simple, leveling operation is easy and convenient, the 3D printing efficiency is improved, operation of a user is facilitated, the operation experience of the user is improved, the maintenance cost of the user is reduced, and the technical requirement for assembly in the production process is reduced; the printing platform is kept horizontal all the time, and leveling operation does not need to be conducted on the printing platform in the subsequent printing process.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and particularly to a printing platform and a 3D printer. Background Art

[0002] As the application fields of 3D printing technology become wider and wider, 3D printing is increasingly applied in production and life. For the lower-exposure stereolithography machine, the levelness of the printing platform is crucial for the quality of 3D printing models. However, in the prior art, for a simple adjustable platform, although the operation is simple, due to the high requirement for leveling accuracy, the success rate of self-operation by customers is relatively low. If the leveling is improper, it will lead to the failure of the printed model, affecting the customer's use experience and increasing the after-sales cost for the customer; for a printing platform that can perform automatic leveling, a large number of sensors and elastic materials are arranged below the printing screen and on the cantilever, and the integration degree is relatively high. During the use process, the sensors are prone to malfunction, and it is difficult for customers to repair them by themselves. Most of them require professional engineers for repair, and the after-sales cost for customers is relatively high; at the same time, during the use process, the sensors are prone to be mis-triggered, resulting in the machine reporting an error during the model printing process, leading to the failure of model printing and affecting the normal production efficiency of customers.

[0003] Therefore, it is very necessary to provide a printing platform and a 3D printer with a simple structure, which can avoid assembly errors and realize the operation of leveling-free during the printing process. Summary of the Utility Model

[0004] The purpose of the present application is to solve the above problems, and provide a printing platform and a 3D printer. The printing platform has a simple structure, can avoid assembly errors, realizes the operation of leveling-free during the printing process, can ensure the 3D printing efficiency and improve the user's use experience.

[0005] In order to solve the above technical problems, the technical solutions adopted in the present application are as follows:

[0006] In the first aspect, the present application provides a printing platform, which is adapted to a material tank. The printing platform includes a platform main body and a contact part arranged on the platform main body; wherein, the contact part is configured to abut against the material tank, so that the bottom of the platform main body is parallel or tends to be parallel to the material tank.

[0007] Optionally, the platform main body includes a first horizontal plate and at least first vertical plates arranged at opposite ends of the first horizontal plate. The first vertical plates extend away from the first horizontal plate in a first direction, and the contact part is arranged on the side of the first vertical plates away from the first horizontal plate.

[0008] Optionally, the projection of the contact part on the plane where the material tank is located exceeds the edge of the material tank.

[0009] Optionally, the contact part includes a second horizontal plate and a second vertical plate. The second horizontal plate is disposed on a side of the first vertical plate away from the first horizontal plate. The second vertical plate is arranged along a second direction and is connected between the first vertical plate and the second horizontal plate, and the second vertical plate can abut against the material chute.

[0010] Optionally, the contact part includes a second horizontal plate. The second horizontal plate is disposed on a side of the first vertical plate away from the first horizontal plate, and the second horizontal plate can abut against the material chute.

[0011] Optionally, the contact part includes a second vertical plate. The second vertical plate is arranged along a second direction on a side of the first vertical plate away from the first horizontal plate, and the second vertical plate can abut against the material chute.

[0012] In a second aspect, the present application provides a 3D printer, which includes the printing platform and the material chute as described above.

[0013] Optionally, the 3D printer further includes a middle plate and a cantilever. The material chute is disposed on the middle plate. When the printing platform moves to the zero position along a first direction, the main body part of the platform is disposed in the material chute, and the contact part abuts against the material chute; the cantilever is connected to the printing platform, and the cantilever is configured to drive the printing platform to move up and down along the first direction.

[0014] Optionally, the printing platform further includes a connecting seat. The connecting seat is connected to the main body of the platform through a fixing connector; the connecting seat is curved and the connecting seat is clamped and fixed to the cantilever; a fastener is provided in an area where the cantilever is aligned with the connecting seat.

[0015] Optionally, the cantilever is provided with a mounting hole and a mounting groove. The mounting hole is arranged along the first direction, the mounting groove is horizontally arranged, the connecting seat is disposed in the mounting groove, and the fastener is disposed at an upper part of the mounting hole.

[0016] Optionally, the fastener includes a first part and a second part which are perpendicularly arranged. The first part is rotationally fixed at an upper part of the mounting hole, the second part extends from the first part to the outside of the cantilever, and the first part can contact the upper surface of the connecting seat.

[0017] The beneficial effects produced by the present application at least include:

[0018] During the assembly process of the printing platform described in this application, the automatic leveling of the printing platform itself is achieved through the deformation of the platform body, ensuring that the bottom of the platform body is parallel or tends to be parallel to the material tank in the initial installation state. The structure of the platform body is stable during use, avoiding the leveling operation in the subsequent leveling process, improving the 3D printing efficiency, facilitating the operation of users, enhancing the user experience, reducing the maintenance cost of users, having a simple overall structure of the printing platform, reducing the technical requirements for assembly in the production process, improving the 3D printing efficiency, facilitating the operation of users, enhancing the user experience, reducing the maintenance cost of users, and reducing the technical requirements for assembly in the production process. Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the printing platform of this application.

[0020] Figure 2 It is the second schematic structural diagram of the printing platform.

[0021] Figure 3 It is the third schematic structural diagram of the printing platform.

[0022] Figure 4 It is the assembly schematic diagram of the printing platform.

[0023] Figure 5 It is the schematic structural diagram of the cantilever.

[0024] Figure 6 It is the schematic structural diagram of the fastener.

[0025] Figure 7 It is another schematic structural diagram of the fastener.

[0026] Wherein, 1 - printing platform, 111 - platform body, 1111 - first horizontal plate, 1112 - first vertical plate, 112 - contact part, 1121 - second horizontal plate, 1122 - second vertical plate, 12 - connecting seat, 121 - third horizontal plate, 122 - third vertical plate, 123 - fourth horizontal plate, 2 - material tank, 3 - middle plate, 5 - cantilever, 51 - mounting hole, 52 - mounting groove, 53 - fastener, 531 - first part, 532 - second part, 54 - connecting hole, 55 - rotating shaft, 6 - fixed connecting piece, Z - first direction, Y - second direction, X - third direction. Detailed Description of the Invention

[0027] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time.

[0029] In the present application, the descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0030] In the description of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0031] It should be noted that in the present application, the outer direction refers to the direction away from the central axis of the printing platform, the upward direction refers to the direction along the first direction Z away from the middle plate, and the downward direction refers to the direction along the first direction Z close to the middle plate; the upper end refers to the end away from the middle plate along the first direction Z; the lower end refers to the end close to the middle plate along the first direction Z. The first direction Z, the second direction Y, and the third direction X are perpendicularly arranged to each other in space. The horizontal refers to a plane parallel to the plane formed by the third direction X and the second direction Y.

[0032] In one of the embodiments, the present application provides a printing platform for the field of 3D printing technology. Refer to Figures 1 to 3 As shown, the printing platform 1 is adapted to the material tank 2, and the printing platform 1 includes:

[0033] The platform body 111 and at least two contact parts 112 provided on the platform body 111, the contact parts 112 being configured to abut against the material tank 2 so that the platform body 111 is arranged parallel to the bottom of the material tank 2. Tending to be parallel means that the error of deviation between the bottom of the platform body and the material tank is within the allowable error range, and the error range is within 0.3 mm. The printing platform 1 being adapted to the material tank 2 means that during the printing process of the printing platform 1, its forming surface can be accommodated in the material tank for photocuring. During the assembly process of the printing platform in this application, when the platform body 111 is placed in the material tank 2, the contact part 112 abuts against the material tank 2, and when the contact part 112 completely abuts against the material tank 2, it indicates that the whole printing platform has been leveled. The printing platform in this application realizes the automatic leveling of the printing platform 1 itself through the deformation of the platform body 111 during assembly, ensuring that the forming surface of the printing platform 1 is parallel or tends to be parallel to the material tank 2 in the initial state; in addition, the abutment between the contact part 112 and the material tank 2 realizes the mechanical limit of the printing platform 1, avoiding damage to the printing screen in the material tank 2 caused by excessive movement of the printing platform 1. This application provides a printing platform that does not require leveling, and the overall structure of the printing platform is simple, improving the 3D printing efficiency, facilitating the operation of users, enhancing the user experience, reducing the maintenance cost of users, and reducing the technical requirements for assembly during the production process, as well as reducing the technical requirements for assembly during the production process.

[0034] Optionally, the platform body 111 includes a first horizontal plate 1111 and at least first vertical plates 1112 provided at opposite ends of the first horizontal plate 1111. The first vertical plates 1112 extend away from the first horizontal plate 1111 in the first direction Z, and the contact parts 112 are provided on the side of the first vertical plates 1112 away from the first horizontal plate 1111. The first horizontal plate 1111 is arranged parallel to the plane enclosed by the second direction Y and the third direction X. The first vertical plates 1112 extend upward from the first horizontal plate 1111 in the first direction Z, playing a connecting role for the first horizontal plate 1111 and the contact parts 112.

[0035] The projection of the contact part 112 on the plane where the material tank 2 is located extends beyond the edge of the material tank 2.

[0036] See Figure 1As shown, in some embodiments, the number of the contact parts 112 is 2, and the contact parts 112 are symmetrically arranged on the platform main body 111 respectively. Specifically, the contact part 112 includes a second horizontal plate 1121 and a second vertical plate 1122. The second horizontal plate 1121 is arranged on a side of the first vertical plate 1112 away from the first horizontal plate 1111. The second vertical plate 1122 is connected between the first vertical plate 1112 and the second horizontal plate 1121 along the second direction Y, and the second vertical plate 1122 can abut against the material tank 2. The second vertical plate 1122 forms a point support between the second vertical plate 1122 and the material tank 2, and the second vertical plate 1122 is connected to the first vertical plate 1112 and the second horizontal plate 1121 at the same time, ensuring the overall structural stability of the contact part 112 and the printing platform 1.

[0037] See Figure 2 As shown, in some other embodiments, the number of the contact parts 112 is 2, and the contact parts 112 are symmetrically arranged on the platform main body 111; specifically, the contact part 112 includes a second horizontal plate 1121. The second horizontal plate 1121 is arranged on a side of the first vertical plate 1112 away from the first horizontal plate 1111, and the second horizontal plate 1121 can abut against the material tank 2. The second horizontal plate 1121 forms a surface support for the printing platform 1.

[0038] See Figure 3 As shown, in some other embodiments, in some embodiments, the number of the contact parts 112 is 4; specifically, the contact part 112 includes a second vertical plate 1122. The second vertical plate 1122 is arranged on a side of the first vertical plate 1112 away from the first horizontal plate 1111 along the second direction Y, and the second vertical plate 1122 can abut against the material tank 2. The second vertical plate 1122 forms point supports at the four corners of the printing platform during use.

[0039] On the other hand, the present application provides a 3D printer. See Figure 4 As shown, the 3D printer includes the printing platform 1 and the material tank 2 as described above; the 3D printer further includes a middle plate 3 and a cantilever 5. The material tank 2 is arranged on the middle plate 3. When the printing platform 1 moves to the zero position along the first direction Z, a part of the platform main body 111 is arranged in the material tank 2, and the contact part 112 abuts against the material tank 2; the cantilever 5 is connected to the printing platform 1, and the cantilever 5 is configured to drive the printing platform 1 to move up and down along the first direction Z.

[0040] The 3D printer described in this application includes a printing platform 1 and a material tank 2. During the assembly process, the printing platform 1 is leveled by its own deformation after rigid contact with the material tank 2. When the printing platform 1 moves to the zero position along the first direction Z, a part of the platform body 111 is disposed inside the material tank 2, and the contact portion 112 abuts against the edge of the material tank 2, achieving rigid contact between the printing platform 1 and the material tank 2. On the one hand, the abutment between the contact portion 112 and the material tank 2 mechanically limits the setting of the printing platform 1 relative to the bottom of the material tank 2, preventing the printing platform 1 from pressing down excessively and damaging the printing screen. On the other hand, during the assembly process, the contact portion 112 can be made to abut against the material tank 2 through the slight deformation of the platform body 111, thereby leveling the printing platform 1 during assembly, ensuring that the printing platform 1 always remains horizontally set, and eliminating the need for subsequent leveling operations on the printing platform 1 during the printing process. Moreover, the overall structure of the printing platform is simple, the leveling operation is convenient, which improves the 3D printing efficiency, facilitates user operation, enhances the user's operation experience, reduces the user's maintenance cost, and reduces the technical requirements for assembly during the production process.

[0041] During the printing of the first layer or assembly adjustment, when the printing platform 1 contacts the edge of the material tank 2 and the contact portion 112 does not fully contact the edge of the material tank 2, that is, the printing platform 1 is not horizontally set, a leveling operation needs to be performed on the printing platform 1. During leveling, the printing platform 1 continues to move downward along the first direction Z, and the platform body 111 is stressed and undergoes slight deformation, thereby causing the contact portion 112 to fully abut against the edge of the material tank 2, so that the printing platform 1 meets the levelness requirements. At this time, the printing platform 1 moves to the zero position, and the leveling of the printing platform 1 is achieved through the rigid contact between the platform body 111 and the edge of the material tank 2, while ensuring that the descent of the printing platform 1 will not damage the printing screen.

[0042] The middle plate 3 is horizontally set, and the upper ends of the edges of the material tank 2 are flush. The zero position refers to the setting position of the printing platform 1 when printing the first layer of the starting model. All the components in this application can be machined parts. Compared with sheet metal parts, the machining accuracy can be guaranteed, the structural stability is better, the similar errors are small, and the assembly is simple.

[0043] When the specific structure of the contact portion 112 is different, the leveling operation may include the following situations:

[0044] For example, see Figure 1As shown, when the contact portion 112 includes a second horizontal plate 1121 and a second vertical plate 1122, the second vertical plates 1122 are distributed in the four corner regions of the platform main body 111. The arrangement of the second vertical plates 1122 forms support points in the four corner regions between the printing platform 1 and the material tank 2. When the second vertical plates 1122 at the four corners all abut against the edges of the material tank 2, the printing platform 1 can be leveled. In addition, the second vertical plates 1122 are connected to the first vertical plate 1112 and the second horizontal plate 1121, strengthening the second vertical plates 1122 and improving the structural stability of the contact portion 112, ensuring the stability of the second vertical plates 1122 when they abut against the edges of the material tank 2.

[0045] When the contact portion 112 includes the second horizontal plate 1121 and the second vertical plate 1122, the printing platform 1 moves downward along the first direction Z. The first horizontal plate 1111 of the platform main body 111 enters the material tank 2, and the second vertical plates 1122 move close to the edges of the material tank 2. If the lower ends of all the second vertical plates 1122 abut against the edges of the material tank 2, it indicates that the printing platform 1 is horizontally arranged and there is no need to level the printing platform 1. At this time, the entire printing platform 1 is supported on the edges of the material tank 2 through the second vertical plates 1122, that is, the printing platform 1 is supported on the edges of the material tank 2 through the contact portion 112. The second vertical plates 1122 form point contacts with the edges of the material tank 2, thereby mechanically limiting the descending position of the printing platform 1 and avoiding damage to components such as the printing screen caused by overpressure. If some of the second vertical plates 1122 abut against the edges of the material tank 2, that is, when the first horizontal plate 1111 is horizontally arranged, it indicates that the printing platform 1 is not horizontally arranged. At this time, the printing platform 1 needs to be leveled. Specifically, the printing platform 1 continues to move downward along the first direction Z, causing the first horizontal plate 1111 to undergo a slight deformation under force, and then causing all the second vertical plates 1122 to abut against the edges of the material tank 2. Furthermore, through the rigid contact between the contact portion 112 and the edges of the material tank 2, the first horizontal plate 1111 is horizontally arranged, and then the leveling operation of the printing platform 1 is realized, correcting the levelness of the printing platform 1 and ensuring the success rate of subsequent model printing.

[0046] For example, see Figure 2 As shown, in some other embodiments, when the contact portion 112 includes the second horizontal plate 1121, the second horizontal plate 1121 is disposed on the side of the first vertical plate 1112 away from the first horizontal plate 1111, and the second horizontal plate 1121 can contact the edge of the material tank 2.

[0047] The setting of the second horizontal plate 1121 enables a surface contact to be formed between the contact portion 112 and the edge of the material tank 2, increasing the contact area between the contact portion 112 and the edge of the material tank 2, and ensuring the stability of the support between the printing platform 1 and the material tank 2.

[0048] During use, the printing platform 1 moves downward along the first direction Z, the first horizontal plate 1111 of the platform main body 111 enters the material tank 2, and the second horizontal plate 1121 approaches the edge of the material tank 2. If the printing platform 1 moves until the entire second horizontal plate 1121 abuts against the edge of the material tank 2, it indicates that the first horizontal plate 1111 is horizontally arranged and there is no need to level the printing platform 1. At this time, the entire printing platform 1 is supported on the edge of the material tank 2 through the second horizontal plate 1121, that is, the printing platform 1 is supported on the edge of the material tank 2 through the contact portion 112, thereby mechanically limiting the printing platform 1 and preventing damage to components such as the printing screen caused by overpressure. If only a part of the second horizontal plate 1121 contacts the edge of the material tank 2, it indicates that the printing platform 1 is not horizontally arranged and the printing platform 1 needs to be leveled. The printing platform 1 continues to move downward along the first direction Z, causing the first horizontal plate 1111 to undergo a slight deformation under force, so that the second horizontal plate 1121 completely abuts against the edge of the material tank 2. Furthermore, through the rigid contact between the contact portion 112 and the edge of the material tank 2, the first horizontal plate 1111 is horizontally arranged, and then the leveling operation of the printing platform 1 is realized, ensuring the success rate of model printing.

[0049] For example, referring to Figure 3 As shown, in some other embodiments, the contact portion 112 includes a second vertical plate 1122, and the second vertical plate 1122 is arranged on the side of the first vertical plate 1112 away from the first horizontal plate 1111 along the second direction Y, and the second vertical plate 1122 can abut against the material tank 2.

[0050] The contact portion 112 includes second vertical plates 1122 distributed in the four corner regions of the platform main body 111. The printing platform 1 contacts the edge of the material tank 2 through the second vertical plates 1122, which simplifies the structure of the printing platform 1, reduces the weight of the printing platform 1 itself, and improves the sensitivity of the printing operation. During use, the printing platform 1 moves downward along the first direction Z. The first horizontal plate 1111 enters the material tank 2 and approaches the printing screen, and the second vertical plates 1122 approach the edge of the material tank 2. If the lower ends of all the second vertical plates 1122 contact the edge of the material tank 2, there is no need to level the printing platform 1 at this time; at this time, the entire printing platform 1 is supported by the second vertical plates 1122 on the edge of the material tank 2, that is, the printing platform 1 is supported on the edge of the material tank 2 through the contact portion 112. The second vertical plates 1122 form point contact with the edge of the material tank 2, thereby mechanically limiting the printing platform 1 and avoiding damage to components such as the printing screen caused by overpressure. If some of the second vertical plates 1122 abut against the edge of the material tank 2, the printing platform 1 needs to be leveled. Specifically, the printing platform 1 continues to move downward along the first direction Z, causing the first horizontal plate 1111 to undergo a slight deformation under force, and then causing all the second vertical plates 1122 to abut against the edge of the material tank 2. Furthermore, through the rigid contact between the contact portion 112 and the edge of the material tank 2, the first horizontal plate 1111 is set horizontally, and then the leveling operation of the printing platform 1 is realized, ensuring the success rate of model printing.

[0051] It can be understood that a horizontally arranged printing screen is provided in the material tank 2, and the printing screen is configured to carry a printing model.

[0052] Furthermore, referring to Figure 4 As shown, the printing platform 1 further includes a connecting seat 12. The connecting seat 12 is connected to the platform main body 111 through a fixing connector 6; the connecting seat 12 is bent and the connecting seat 12 is clamped and fixed to the cantilever 5; the printing platform 1 is fixedly connected to the cantilever 5 through the connecting seat 12. A fastener 53 is provided in the area of the cantilever 5 aligned with the connecting seat 12, and the fastener 53 is configured to apply a force to the connecting seat 12 to fix the connecting seat 12. Optionally, the fastener 53 is provided above the connecting seat 12. During use, the connecting seat 12 is tightly clamped or unloaded by adjusting the fastener 53, facilitating the installation or disassembly of the printing platform 1; setting the fastener 53 above the connecting seat 12 facilitates the operation of the fastener 53 and avoids interference between the fastener 53 and other components.

[0053] Referring toFigure 5 As shown, the cantilever 5 is provided with a mounting hole 51 and a mounting groove 52. The mounting hole 51 is arranged along the first direction Z, the mounting groove 52 is horizontally arranged, the mounting hole 51 communicates with the mounting groove 52, the connecting seat 12 is arranged in the mounting groove 52, and the fastener 53 is arranged at the upper part of the mounting hole 51. The fastener 53 is arranged at the upper part of the mounting hole 51, which facilitates the adjustment operation of the fastener 53.

[0054] The fastener 53 includes a first part 531 and a second part 532 which are perpendicularly arranged. The first part 531 is rotatably fixed at the upper part of the mounting hole 51, the second part 532 extends from the first part 531 to the outside of the cantilever 5, and the first part 531 can contact the upper surface of the connecting seat 12.

[0055] As a further alternative, referring to Figure 6 As shown, in some embodiments, the first part 531 is provided with a connecting hole 54 arranged along the third direction X, and the cantilever 5 is provided with a rotating shaft that cooperates with the connecting hole 54. The rotating shaft is rotatably connected in the connecting hole 54. During use, by adjusting the second part 532, the second part 532 drives the first part 531 to rotate around the rotating shaft, so that the first part 531 contacts or moves away from the upper surface of the connecting seat 12, thereby realizing the fixed clamping or unloading of the connecting seat 12. In other embodiments, referring to Figure 7As shown, the two ends of the first part 531 are provided with rotating shafts 55 arranged along the third direction X. Correspondingly, the cantilever 5 is provided with connection holes that cooperate with the rotating shafts 55. During use, by adjusting the second part 532, the second part 532 drives the rotating shafts 55 on the first part 531 to rotate within the connection holes, so that the first part 531 contacts or moves away from the upper surface of the connection seat 12, thereby realizing the fixed clamping or unloading of the connection seat 12. It can be understood that the fastener 53 and the cantilever 5 can also be connected through other cooperation structures, as long as the fastener 53 is rotatably connected to the cantilever 5. Further optionally, in some embodiments, the connection seat 12 includes a third horizontal plate 121, a third vertical plate 122, and a fourth horizontal plate 123. The third horizontal plate 121 and the fourth horizontal plate 123 are both arranged parallel to the first horizontal plate 1111. The third vertical plate 122 is vertically provided on both sides of the third horizontal plate 121. The fourth horizontal plate 123 is vertically provided at the lower end of the third vertical plate 122. The fixed connection member 6 is connected to the fourth horizontal plate 123. The cantilever 5 is connected to the third horizontal plate 121. The first part 531 of the cantilever 5 clamps the third horizontal plate 121. The third horizontal plate 121 is arranged in the installation groove 52, and the fastener 53 applies a force to the surface of the third horizontal plate 121 to clamp the third horizontal plate 121.

[0056] Optionally, referring again to Figure 4 As shown, in some embodiments, the connection seat 12 is connected to the upper surface of the platform main body 111 through a fixed connection member 6. In some embodiments, the fixed connection member 6 is a screw. The connection seat 12 and the platform main body 111 are detachably connected through the fixed connection member 6. In other embodiments, the connection seat 12 and the platform main body 111 are integrally formed, so that the printing platform 1 is obtained through one machining process, improving the production efficiency of the printing platform 1.

[0057] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered to be within the scope described in this specification.

[0058] The above embodiments only express the preferred implementation modes of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A printing platform, characterized in that The printing platform is adapted to the material tank. The printing platform includes a platform main body and at least two contact parts provided on the platform main body. Among them, the contact parts are configured to abut against the material tank so that the bottom of the platform main body is parallel or tends to be parallel to the material tank.

2. The printing platform according to claim 1, characterized in that, The platform main body includes a first horizontal plate and at least first vertical plates provided at opposite ends of the first horizontal plate. The first vertical plates extend away from the first horizontal plate in a first direction, and the contact parts are provided on the side of the first vertical plates away from the first horizontal plate.

3. The printing platform according to claim 2, characterized in that, The projection of the contact part on the plane where the material tank is located extends beyond the edge of the material tank.

4. The printing platform according to claim 3, characterized in that, The contact part includes a second horizontal plate and a second vertical plate. The second horizontal plate is provided on the side of the first vertical plate away from the first horizontal plate. The second vertical plate is connected between the first vertical plate and the second horizontal plate in a second direction, and the second vertical plate can abut against the material tank.

5. The printing platform according to claim 3, wherein, The contact part includes a second horizontal plate. The second horizontal plate is provided on the side of the first vertical plate away from the first horizontal plate, and the second horizontal plate can abut against the material tank.

6. The printing platform according to claim 3, characterized in that, The contact part includes a second vertical plate. The second vertical plate is provided on the side of the first vertical plate away from the first horizontal plate in a second direction, and the second vertical plate can abut against the material tank.

7. A 3D printer, characterized in that, It includes the printing platform and the material tank according to any one of claims 1-6.

8. The 3D printer according to claim 7, characterized in that, The 3D printer further includes a middle plate and a cantilever. The material tank is provided on the middle plate. When the printing platform moves to the zero position in the first direction, a part of the platform main body is arranged in the material tank, and the contact part abuts against the material tank. The cantilever is connected to the printing platform, and the cantilever is configured to drive the printing platform to move up and down in the first direction.

9. The 3D printer according to claim 8, wherein, The printing platform further includes a connecting seat. The connecting seat is connected to the platform main body through a fixed connecting piece. The connecting seat is curved and the connecting seat is clamped and fixed to the cantilever. A fastener is provided in the area where the cantilever is aligned with the connecting seat.

10. The 3D printer according to claim 9, characterized in that, The cantilever is provided with a mounting hole and a mounting groove. The mounting hole is arranged in the first direction, the mounting groove is arranged horizontally, the connecting seat is arranged in the mounting groove, and the fastener is arranged at the upper part of the mounting hole.

11. The 3D printer according to claim 10, wherein The fastener includes a first part and a second part arranged perpendicular to each other. The first part is rotationally fixed at the upper part of the mounting hole, the second part extends from the first part to the outside of the cantilever, and the first part can contact the upper surface of the connecting seat.

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