Printing platform and 3D printer

Abstract

According to the printing platform, at least two limiting protrusions are arranged on a printing platform body, limiting grooves matched with the limiting protrusions are formed in an elastic piece, when the elastic piece is assembled on the printing platform body, the elastic piece and the printing platform body need to be aligned in position, only the elastic piece needs to be moved, and the printing platform body can be assembled on the printing platform body. And the limiting bulge on the printing platform body is arranged in the limiting groove of the elastic piece, so that the position alignment of the elastic piece and the printing platform body can be realized. According to the main technical scheme, the printing platform is used for the 3D printer and comprises a printing platform body, and the printing platform body is provided with at least two limiting protrusions; and the elastic piece is provided with a limiting groove, and the limiting groove is used for being matched with the limiting protrusion so that the elastic piece can be aligned with the printing platform body in position. The elastic piece is used for achieving position alignment of the elastic piece and the printing platform body.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a printing platform and a 3D printer. Background Art

[0002] 3D printer technology is a technology that uses digital model files, powdered metal or plastic and other bondable materials as printing materials, and then constructs three-dimensional objects by adding materials layer by layer. 3D printer technology is a type of rapid prototyping technology that can print complex geometric shapes and functional parts. 3D printing technology is developing rapidly, and its application scope is constantly expanding, which has a profound impact on many fields such as manufacturing, medicine, architecture, and art.

[0003] In FDM (Fused Deposition Mode) technology, when printing a model, the surface that contacts the model, that is, the printing platform, needs to be heated. The printing platform includes a spring steel sheet for contacting the model. The spring steel sheet needs to be removed to remove the model, and then put back on the printing platform. When the spring steel sheet is assembled back on the printing platform, it needs to be re-aligned and positioned. Since the spring steel sheet needs to be taken out frequently, the current limit structure of the printing platform is complex and inconvenient to use, and fails to meet the use requirements. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the purpose of the utility model is to provide a printing platform and a 3D printer.

[0005] In a first aspect, the present application provides a printing platform for a 3D printer, the printing platform comprising:

[0006] A printing platform body, wherein the printing platform body is provided with at least two limiting protrusions;

[0007] The elastic member is provided with a limiting groove, and the limiting groove is used to match with the limiting protrusion so that the elastic member is aligned with the printing platform body.

[0008] In one of the embodiments, the limiting groove includes a positioning edge and side edges connected to both sides of the positioning edge, and the shape of the side surface of the limiting protrusion that abuts against the limiting groove matches the shape of the positioning edge.

[0009] In one embodiment, the side surface of the limiting protrusion used to abut against the limiting groove is an arc-shaped surface, and the limiting groove is an arc-shaped groove. When the limiting protrusion matches the limiting groove, the arc-shaped surface is placed in the limiting groove; or,

[0010] The limiting groove is a V-shaped groove, and the angle formed by the side of the V-shaped groove and the side of the elastic member is greater than 90° and less than 180°.

[0011] In one embodiment, the limiting protrusion is a cylinder; the diameter of the limiting protrusion is 1mm-13mm.

[0012] In one of the embodiments, if the limiting groove is a V-shaped groove, the side surface of the limiting protrusion used to abut against the limiting groove is an arc-shaped surface, and the bottom shape of the V-shaped groove matches the arc-shaped surface.

[0013] In one of the embodiments, the limiting groove is arranged on the side of the elastic member, and the limiting groove passes through the upper surface and the lower surface of the elastic member.

[0014] In one embodiment, at least two of the limiting protrusions are arranged on the same side of the printing platform, the number of the limiting grooves is at least two and matches the number of the limiting protrusions, and the at least two limiting grooves are arranged on the same side of the elastic member; or,

[0015] At least two of the limiting protrusions are respectively arranged on adjacent side edges of the printing platform, the number of the limiting grooves is at least two and matches the number of the limiting protrusions, and the at least two limiting grooves are arranged on adjacent side edges of the elastic member.

[0016] In one embodiment, the distance between the at least two limiting protrusions is greater than the diameter of the limiting protrusion, and the distance between different limiting grooves is greater than the diameter of the limiting protrusion; and / or

[0017] The at least two limiting protrusions have the same shape and size, and the different limiting grooves have the same shape and size, and the limiting protrusions correspond to the limiting grooves one by one.

[0018] In one embodiment, the printing platform body includes a base, an aluminum substrate and a soft magnetic sheet. The aluminum substrate is arranged on the top of the base and fixedly connected to the base, and the soft magnetic sheet is arranged on the top of the aluminum substrate.

[0019] In a second aspect, the present application also provides a 3D printer, comprising the above-mentioned printing platform.

[0020] The beneficial effects of the utility model are:

[0021] The above-mentioned printing platform has at least two limiting protrusions on the printing platform body and limiting grooves matching the limiting protrusions on the elastic member. When the elastic member is assembled on the printing platform body, it is necessary to align the elastic member with the printing platform body. The elastic member only needs to be moved so that the limiting protrusion on the printing platform body is placed on the limiting groove of the elastic member, thereby achieving the alignment of the elastic member with the printing platform body. Since at least two limiting protrusions are arranged on the printing platform body, when the two or more limiting protrusions are arranged on the same side of the printing platform body, the two or more limiting protrusions can determine the position of the side, and the limiting groove on the elastic member matching the limiting protrusion can also determine the position of the side of the elastic member, and the shape of the elastic member and the printing platform body is also fixed, when the elastic member and the printing platform body are aligned with one edge through the limiting protrusion and the limiting groove, the elastic member and the printing platform body can be aligned in position; when the two or more limiting protrusions are arranged on different sides of the printing platform body, the two or more limiting protrusions can determine the position of the corner or surface of the printing platform body, and the limiting groove on the elastic member matching the limiting protrusion can also determine the position of the corner or surface of the elastic member, and the shape of the elastic member and the printing platform body is also fixed, when the elastic member and the printing platform body are aligned with the corner or surface through the limiting protrusion and the limiting groove, the elastic member and the printing platform body can be aligned in position;

[0022] It should be noted that a soft magnetic sheet or other structure is provided on the printing platform body to realize the assembly of the elastic part and the printing platform body. When the elastic part is aligned and assembled, one side of the elastic part is placed on the printing platform body. When a soft magnetic sheet is provided on the printing platform body, the other side of the elastic part is tilted at a certain angle. This angle is used to ensure that the elastic part is separated from the suction of the soft magnetic sheet, and the elastic part is pushed so that the limiting protrusion on the printing platform body is placed on the limiting groove of the elastic part, so as to realize the position alignment of the elastic part and the printing platform body. Then, the elastic part is rotated in the direction so that the elastic part fits with the soft magnetic sheet, so as to realize the position alignment and fixation of the elastic part and the printing platform body when assembled.

[0023] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the invention. The purpose and other advantages of the invention can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the use and assembly structure of the printing platform in the first embodiment of the present invention;

[0025] Figure 2 An exploded view of the printing platform in the first embodiment of the present invention;

[0026] Figure 3 This is an assembly diagram of a printing platform in Embodiment 1 of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the printing platform elastic member in the first embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the base of the printing platform in the first embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the positioning edge and the side edge of the printing platform limiting groove in the first embodiment of the present invention;

[0030] Figure 7 This is a schematic structural diagram of a frame and a notch of a 3D printer housing in another embodiment provided by the present invention.

[0031] Reference numerals:

[0032] 1. Elastic part; 2. Soft magnetic sheet; 3. Screw module; 4. Aluminum substrate; 5. Base; 6. Limiting protrusion; 11. Limiting groove; 20. Notch; 30. Frame. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0036] Unless otherwise specified, the methods and equipment used in the present invention are all conventional reagents, methods and equipment in the technical field.

[0037] In order to facilitate the understanding of the embodiments of the utility model, the printing platform in the related technology is first described. When the 3D printer completes printing, the model on the spring steel sheet needs to be removed and the spring steel sheet needs to be put back on the printing platform. When the spring steel sheet is assembled back on the printing platform, it needs to be re-aligned and positioned; because the spring steel sheet needs to be taken out frequently, the current limit structure of the printing platform is complex and inconvenient to use, and fails to meet the use requirements. Based on this, the present application provides a printing platform.

[0038] As shown in the accompanying drawings, a printing platform provided in Embodiment 1 of the present application is used in a 3D printer; the printing platform includes:

[0039] The printing platform body is provided with at least two limiting protrusions 6;

[0040] The elastic member 1 is provided with a limiting groove 11, and the limiting groove 11 is used to match with the limiting protrusion 6 so that the elastic member 1 is aligned with the printing platform body.

[0041] By setting at least two limiting protrusions 6 on the printing platform body and setting a limiting groove 11 matching the limiting protrusion 6 on the elastic member 1, when the elastic member 1 is assembled on the printing platform body, it is necessary to align the elastic member 1 with the printing platform body. It is only necessary to move the elastic member 1 so that the limiting protrusion 6 on the printing platform body is placed on the limiting groove 11 of the elastic member 1, so that the elastic member 1 can be aligned with the printing platform body.

[0042] The elastic member 1 can be a spring steel sheet. Since at least two limiting protrusions 6 are arranged on the printing platform body, when two or more limiting protrusions 6 are arranged on the same side of the printing platform body, the two or more limiting protrusions 6 can determine the position of the side, and the limiting groove 11 on the elastic member 1 that matches the limiting protrusion 6 can also determine the position of the side of the elastic member 1. At the same time, the shapes of the elastic member 1 and the printing platform body are also fixed. When the elastic member 1 and the printing platform body are aligned on one side through the limiting protrusion 6 and the limiting groove 11, the elastic member 1 and the printing platform body are aligned. The platform body can be aligned in position; when two or more limiting protrusions 6 are arranged on different sides of the printing platform body, the two or more limiting protrusions 6 can determine the position of the corner or surface of the printing platform body, and the limiting grooves 11 on the elastic member 1 that match the limiting protrusions 6 can also determine the position of the corner or surface of the elastic member 1. At the same time, the shapes of the elastic member 1 and the printing platform body are also fixed. When the elastic member 1 and the printing platform body are aligned in angle or surface through the limiting protrusions 6 and the limiting grooves 11, the elastic member 1 and the printing platform body can be aligned in position;

[0043] It should be noted that a soft magnetic sheet 2 or other structure is provided on the printing platform body to realize the assembly of the elastic member 1 and the printing platform body. The elastic member 1 has the property of being adsorbed by a magnetic member. The elastic member 1 may include a metal material, such as iron, cobalt, nickel, etc., or other materials with the property of being adsorbed by magnetic force. When a soft magnetic sheet 2 is provided on the printing platform body, one side of the elastic member 1 is placed on the printing platform body, and the other side of the elastic member 1 is tilted at a certain angle. This angle is used to ensure that the elastic member 1 is separated from the suction of the soft magnetic sheet 2, and the elastic member 1 is pushed so that the limiting protrusion 6 on the printing platform body is placed on the limiting groove 11 of the elastic member 1, so as to realize the position alignment of the elastic member 1 and the printing platform body, and then the direction of the elastic member 1 is adjusted so that the elastic member 1 fits with the soft magnetic sheet 2, so as to realize the position alignment of the elastic member 1 and the printing platform body during assembly.

[0044] In a preferred embodiment of the utility model, the limiting groove 11 includes a positioning edge and side edges connected to the positioning edge on both sides, and the shape of the side of the limiting protrusion 6 used to abut the limiting groove 11 matches the shape of the positioning edge; it should be noted that the shape matching of the side of the limiting protrusion 6 with the positioning edge includes two situations, one is that the shape of the side of the limiting protrusion 6 is consistent with the shape of the positioning edge, and the side of the limiting protrusion 6 and the positioning edge can be in contact without a gap, so as to achieve a better limiting effect and better align the elastic member 1 with the printing platform body; the other is that the shape of the side of the limiting protrusion 6 is not completely consistent with the shape of the positioning edge, but the side of the limiting protrusion 6 can be placed in the positioning edge to achieve a limiting effect, so that the elastic member 1 and the printing platform body can be aligned.

[0045] It should also be noted that the elastic member 1 can be a spring steel sheet or other component that needs to be aligned with the position of the printing platform body; the positioning edge and the side edges connected to the positioning edge on both sides are described in the form of a cross section of the limiting groove 11. In order to better illustrate the structural shape of the limiting groove 11, it cannot be simply assumed that the limiting groove 11 is composed of three line-shaped edge lines, and the same is true for the limiting protrusion 6; please refer to the attached Figure 6 , attached Figure 6 The structure of the limiting groove 11 of different embodiments is shown, including positioning edges and side edges of different shapes. The positioning edge is located at the bottom of the limiting groove 11 away from its opening. The positioning edge can be in the shape of an arc, a triangle, a rectangle, etc. The limiting protrusion 6 is used to match the side shape of the limiting groove 11 with the positioning edge shape. The side shape of the limiting protrusion 6 abutting against the limiting groove 11 can be a corresponding arc, a triangle, a rectangle, etc. shape; in order to better achieve the matching between the limiting protrusion 6 and the limiting groove 11, the side edges connected to the two sides of the positioning edge can be arc edges or straight edges.

[0046] In practical applications, for example, when the positioning edge is in the shape of a triangle, the side shape of the limiting protrusion 6 abutting against the limiting groove 11 can be a corresponding triangular shape, and the side edges connected to the two sides of the positioning edge can be arc edges or straight edges. When the limiting protrusion 6 enters the position of the positioning edge of the limiting groove 11, the limiting protrusion 6 matches and contacts with the limiting groove 11 to achieve a better limiting effect, so that the elastic member 11 and the printing platform body can be better aligned.

[0047] In a preferred embodiment of the present invention, the side surface of the limiting protrusion 6 used to abut against the limiting groove 11 is an arc-shaped surface, and the limiting groove 11 is an arc-shaped groove. When the limiting protrusion 6 matches the limiting groove 11, the arc-shaped surface is placed in the limiting groove 11; or,

[0048] The limiting groove 11 is a V-shaped groove, and the angle formed by the side of the V-shaped groove and the side of the elastic member 11 is greater than 90° and less than 180°;

[0049] In practical applications, when the side surface of the limiting protrusion 6 that is used to abut against the limiting groove 11 is an arc-shaped surface, the limiting protrusion 6 can be cylindrical, semi-cylindrical or other structures with an arc-shaped side surface, and the limiting groove 11 can be an arc-shaped groove. Specifically, the limiting groove 11 can be an arc-shaped groove as a whole, or the positioning edge can be an arc-shaped edge, and the arc-shaped edge matches the arc-shaped surface of the limiting protrusion 6, so that the elastic member 11 and the printing platform body can be better aligned;

[0050] When the side surface of the limiting protrusion 6 that is used to abut against the limiting groove 11 is an arc surface, the wear between the limiting protrusion 6 and the limiting groove 11 can be reduced, and the arc surface can smoothly move to the bottom of the limiting groove 11. When the limiting protrusion 6 contacts the edge of the limiting groove 11, the position of the elastic member 11 can be adjusted by gently pushing, so that the limiting protrusion 6 can be well placed at the bottom of the limiting groove 11, so that the limiting protrusion 6 and the limiting groove 11 are matched, thereby realizing the position alignment of the elastic member 11 and the printing platform body;

[0051] It should be noted that if the limiting groove 11 is a V-shaped groove, when the angle formed by the side of the V-shaped groove and the side of the elastic member 11 is greater than 90° and less than 180°, the two side edges of the V-shaped groove can form an opening shape that is larger at the top and smaller at the bottom, so that when the limiting protrusion 6 is located in the V-shaped groove, the limiting protrusion 6 can be matched with the limiting groove 11 by continuing to push and adjust lightly. The increase in the opening distance of the limiting groove 11 can also improve the convenience of matching the limiting protrusion 6 with the limiting groove 11; in practical applications, the side surface of the limiting protrusion 6 used to abut the limiting groove 11 can be an arc surface, or it can be other shapes such as a triangle or a rectangle; the shape of the surface where the limiting groove 11 abuts against the limiting protrusion 6 can be the same as the shape of the side surface of the limiting protrusion 6, such as an arc, a rectangle, etc., and the shape of the surface where the limiting groove 11 abuts against the limiting protrusion 6 can be different from the shape of the side surface of the limiting protrusion 6, that is, the shape of the surface where the limiting groove 11 abuts against the limiting protrusion 6 can be inconsistent with the shape of the side surface of the limiting protrusion 6.

[0052] In a preferred embodiment of the present utility model, the limiting protrusion 6 is a cylinder; the diameter of the limiting protrusion 6 is 1mm-13mm;

[0053] It should be noted that the cylinder is a circle in a top view, and a straight line is tangent to any position of the circumference, and all points on the circumference are equidistant from the center point of the circle; the side of the cylinder is an arc-shaped surface without an angle, and the contact edge of the side of the cylinder and the corresponding limiting groove 11 is a smooth and continuous curve. When the cylindrical limiting protrusion 6 contacts the arc-shaped limiting groove 11, the wear between the limiting protrusion 6 and the limiting groove 11 can be reduced, and the limiting protrusion 6 can be smoothly moved to the bottom of the limiting groove 11 through the guidance of the arc-shaped groove. When the limiting protrusion 6 contacts the edge of the limiting groove 11, the position of the elastic member 11 can be adjusted by gently pushing the limiting protrusion 6 to be well placed at the bottom of the limiting groove 11, so that the limiting protrusion 6 is matched with the limiting groove 11, thereby realizing the position alignment of the elastic member 11 with the printing platform body; in actual applications, the diameter of the limiting protrusion 6 is 1mm-13mm.

[0054] A preferred method in the embodiment of the utility model is that if the limiting groove 11 is a V-shaped groove, the side of the limiting protrusion 6 used to abut the limiting groove 11 is an arc-shaped surface, and the bottom shape of the V-shaped groove matches the arc-shaped surface; in actual application, when the limiting protrusion 6 with the arc-shaped side surface contacts the limiting groove 11, the wear between the limiting protrusion 6 and the limiting groove 11 can be reduced, and the limiting protrusion 6 can be smoothly moved to the bottom of the limiting groove 11 through the guidance of the V-shaped groove, so as to achieve the matching of the limiting protrusion 6 and the limiting groove 11, thereby realizing the position alignment of the elastic member 11 and the printing platform body.

[0055] In a preferred embodiment of the present invention, the limiting groove 11 is arranged on the side of the elastic member 11 , and the limiting groove 11 passes through the upper surface and the lower surface of the elastic member 11 .

[0056] In a preferred embodiment of the utility model, at least two limiting protrusions 6 are arranged on the same side of the printing platform, the number of limiting grooves 11 is at least two and matches the number of limiting protrusions 6, and at least two limiting grooves 11 are arranged on the same side of the elastic member 11; or,

[0057] At least two limiting protrusions 6 are respectively arranged on adjacent sides of the printing platform, the number of limiting grooves 11 is at least two and matches the number of limiting protrusions 6, and at least two limiting grooves 11 are arranged on adjacent sides of the elastic member 11;

[0058] In actual applications, when two or more limiting protrusions 6 are arranged on the same side of the printing platform body, the two or more limiting protrusions 6 can determine the position of the side, and the limiting groove 11 on the elastic member 11 that matches the limiting protrusion 6 can also determine the position of the side of the elastic member 11. At the same time, the shapes of the elastic member 11 and the printing platform body are also fixed. When the elastic member 11 and the printing platform body are aligned on one edge through the limiting protrusion 6 and the limiting groove 11, the elastic member 11 and the printing platform body can achieve position alignment.

[0059] In actual applications, when two or more limiting protrusions 6 are arranged on adjacent sides of the printing platform body, the two or more limiting protrusions 6 can determine the position of the corner of the printing platform body, and the limiting groove 11 on the elastic member 11 that matches the limiting protrusion 6 can also determine the position of the corner of the elastic member 11. At the same time, the shapes of the elastic member 11 and the printing platform body are also fixed. When the elastic member 11 and the printing platform body achieve angle alignment through the limiting protrusion 6 and the limiting groove 11, the elastic member 11 and the printing platform body can achieve position alignment.

[0060] In a preferred embodiment of the present invention, the distance between at least two limiting protrusions 6 is greater than the diameter of the limiting protrusion 6, and the distance between different limiting grooves 11 is greater than the diameter of the limiting protrusion 6; and / or

[0061] At least two limiting protrusions 6 have the same shape and size, and different limiting grooves 11 have the same shape and size, and the limiting protrusions 6 correspond to the limiting grooves 11 one by one.

[0062] In practical applications, for example, when there are two limiting protrusions 6, if the distance between the two limiting protrusions 6 is too small, it may cause the positions of the two limiting protrusions 6 to overlap and fail to be set or aligned. When the distance between the two limiting protrusions 6 is increased, the alignment positions corresponding to the two limiting protrusions 6 are better defined.

[0063] In a preferred embodiment of the utility model, the printing platform body includes a base 5, an aluminum substrate 4 and a soft magnetic sheet 2, the aluminum substrate 4 is arranged on the top of the base 5 and is fixedly connected to the base 5, and the soft magnetic sheet 2 is arranged on the top of the aluminum substrate 4; specifically, the aluminum substrate 4 can be fixedly connected to the base 5 by a screw module 3.

[0064] In actual applications, the printing platform body is provided with a soft magnetic sheet 2, which will generate suction on the elastic part 11. When the elastic part 11 is aligned with the printing platform body, the elastic part 11 is put down, and the soft magnetic sheet 2 can assemble the elastic part 11 with the printing platform body through magnetic suction. By providing the soft magnetic sheet 2, the elastic part 11 and the printing platform body can be better assembled.

[0065] A 3D printer provided in the second embodiment of the present application includes the printing platform of the first embodiment;

[0066] By providing at least two limiting protrusions 6 on the printing platform body of the 3D printer and providing a limiting groove 11 matching the limiting protrusion 6 on the elastic member 11, when the elastic member 11 is assembled on the printing platform body, it is necessary to align the elastic member 11 with the printing platform body. It is only necessary to move the elastic member 11 so that the limiting protrusion 6 on the printing platform body is placed on the limiting groove 11 of the elastic member 11, so that the position alignment of the elastic member 11 with the printing platform body can be achieved, thereby improving the use efficiency of the 3D printer.

[0067] The structure of the 3D printer is not limited. As an example, the 3D printer may include a housing, one side of which is provided with an opening, a door rotatably provided on the housing, and the door is used to cover the opening; an upwardly protruding frame 30 is provided on the bottom plate of the inner body, a notch 20 is provided on the frame 30, and a sealing member is provided on the door, and the sealing member is used to fit with the frame 30 to seal the notch 20.

[0068] The housing includes a rear cover plate, a left side plate, a right side plate, a top plate and the aforementioned bottom plate. The cover plate, the left side plate, the right side plate, the top plate and the bottom plate are arranged to form a receiving space.

[0069] The seal is used to seal the environment inside the shell to keep the shell warm. That is, the seal is a heat-insulating member. The bottom plate of the notch 20 can be flush with the bottom plate of the shell, so that the user can easily clean the debris of the printed model.

[0070] The length of the notch 20 is 20 mm-400 mm; the bottom and side wall of the notch 20 are arranged at an angle, and the size of the angle is not limited, such as α and β in the accompanying drawings, the size of the angle is 45°-180°.

[0071] On the one hand, if Figure 7As shown, reference numeral 1, the present application embodiment further provides a printing platform for a 3D printer, the printing platform comprising:

[0072] The printing platform body is provided with at least two limiting protrusions 6;

[0073] The elastic member 1 is provided with a limiting groove 11, and the limiting groove 11 is used to match with the limiting protrusion 6 so that the elastic member 1 is aligned with the printing platform body.

[0074] Among them, number 2, based on number 1, the limiting groove 11 includes a positioning edge and side edges connected to the positioning edge on both sides, and the shape of the side surface of the limiting protrusion 6 that abuts against the limiting groove 11 matches the shape of the positioning edge.

[0075] Among them, number 3, based on number 1 or 2, the side of the limiting protrusion 6 used to abut against the limiting groove 11 is an arc-shaped surface, the limiting groove 11 is an arc-shaped groove, and when the limiting protrusion 6 matches the limiting groove 11, the arc-shaped surface is placed in the limiting groove 11; or,

[0076] The limiting groove 11 is a V-shaped groove, and the angle formed between the side of the V-shaped groove and the side of the elastic member 1 is greater than 90° and less than 180°.

[0077] Among them, in reference numeral 4, based on reference numeral 3, the limiting protrusion 6 is a cylinder; the diameter of the limiting protrusion 6 is 1 mm-13 mm.

[0078] Among them, number 5, based on number 3, if the limiting groove 11 is a V-shaped groove, the side surface of the limiting protrusion 6 used to abut against the limiting groove 11 is an arc surface, and the shape of the bottom of the V-shaped groove matches the arc surface.

[0079] Among them, number 6, on the basis of number 1, a limiting groove 11 is arranged on the side of the elastic member 1, and the limiting groove 11 runs through the upper surface and the lower surface of the elastic member 1.

[0080] Among them, reference numeral 7, based on reference numeral 1, at least two limiting protrusions 6 are arranged on the same side of the printing platform, the number of limiting grooves 11 is at least two and matches the number of limiting protrusions 6, and at least two limiting grooves 11 are arranged on the same side of the elastic member 1; or,

[0081] At least two limiting protrusions 6 are respectively arranged on adjacent sides of the printing platform, the number of limiting grooves 11 is at least two and matches the number of limiting protrusions 6 , and at least two limiting grooves 11 are arranged on adjacent sides of the elastic member 1 .

[0082] Among them, in reference numeral 8, based on reference numeral 1, the distance between at least two limiting protrusions 6 is greater than the diameter of the limiting protrusion 6, and the distance between different limiting grooves 11 is greater than the diameter of the limiting protrusion 6; and / or

[0083] At least two limiting protrusions 6 have the same shape and size, and different limiting grooves 11 have the same shape and size, and the limiting protrusions 6 correspond to the limiting grooves 11 one by one.

[0084] Among them, number 9, based on number 1, the printing platform body includes a base 5, an aluminum substrate 4 and a soft magnetic sheet 2, the aluminum substrate 4 is arranged on the top of the base 5 and is fixedly connected to the base 5, and the soft magnetic sheet 2 is arranged on the top of the aluminum substrate 4.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A printing platform for a 3D printer, characterized in that: The printing platform comprises: A printing platform body, wherein the printing platform body is provided with at least two limiting protrusions; The elastic member is provided with a limiting groove, and the limiting groove is used to match with the limiting protrusion so that the elastic member is aligned with the printing platform body.

2. The printing platform according to claim 1, characterized in that: The limiting groove comprises a positioning edge and side edges connected to both sides of the positioning edge, and the shape of the side surface of the limiting protrusion that abuts against the limiting groove matches the shape of the positioning edge.

3. The printing platform according to claim 1 or 2, characterized in that: The side surface of the limiting protrusion used to abut against the limiting groove is an arc-shaped surface, and the limiting groove is an arc-shaped groove. When the limiting protrusion matches the limiting groove, the arc-shaped surface is placed in the limiting groove; or, The limiting groove is a V-shaped groove, and the angle formed by the side of the V-shaped groove and the side of the elastic member is greater than 90° and less than 180°.

4. The printing platform according to claim 3, characterized in that: The limiting protrusion is a cylinder; the diameter of the limiting protrusion is 1mm-13mm.

5. The printing platform according to claim 3, characterized in that: If the limiting groove is a V-shaped groove, the side surface of the limiting protrusion used to abut against the limiting groove is an arc-shaped surface, and the bottom shape of the V-shaped groove matches the arc-shaped surface.

6. The printing platform according to claim 1, characterized in that: The limiting groove is arranged on the side surface of the elastic member, and the limiting groove passes through the upper surface and the lower surface of the elastic member.

7. The printing platform according to claim 1, characterized in that: At least two of the limiting protrusions are arranged on the same side of the printing platform, the number of the limiting grooves is at least two and matches the number of the limiting protrusions, and the at least two limiting grooves are arranged on the same side of the elastic member; or, At least two of the limiting protrusions are respectively arranged on adjacent side edges of the printing platform, the number of the limiting grooves is at least two and matches the number of the limiting protrusions, and the at least two limiting grooves are arranged on adjacent side edges of the elastic member.

8. The printing platform according to claim 1, characterized in that: The distance between the at least two limiting protrusions is greater than the diameter of the limiting protrusion, and the distance between different limiting grooves is greater than the diameter of the limiting protrusion; and / or The at least two limiting protrusions have the same shape and size, and the different limiting grooves have the same shape and size, and the limiting protrusions correspond to the limiting grooves one by one.

9. The printing platform according to claim 1, characterized in that: The printing platform body comprises a base, an aluminum substrate and a soft magnetic sheet. The aluminum substrate is arranged on the top of the base and is fixedly connected to the base. The soft magnetic sheet is arranged on the top of the aluminum substrate.

10. A 3D printer, comprising the printing platform according to any one of claims 1 to 9.

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