Axial movement mechanism of 3D printer

Abstract

The utility model relates to an axial movement mechanism of a 3D printer in the field of 3D printing equipment, which comprises a first axial profile and two second axial profiles respectively arranged at two ends of the first axial profile, and the first axial profile is perpendicular to the second axial profiles and can be movably positioned along the second axial profiles; the side wall of each second axial profile is provided with a sliding groove in the axial direction of the corresponding second axial profile, sliding assemblies capable of moving along the sliding grooves are clamped in the sliding grooves, and the two ends of the first axial profile are fixedly connected with the two sliding assemblies respectively. According to the axial movement mechanism, part of movement mechanisms can be hidden, and the collision risk and the installation and maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the field of 3D printing equipment, in particular to an axial motion mechanism of a 3D printer. Background Art

[0002] Currently, 3D printers using FDM fused deposition modeling (FDM) technology have the highest market share. Depending on the operating conditions and characteristics of these 3D printers, the XYZ three-axis assembly and wraparound methods are different, and can be roughly divided into Cartesian and core structures. However, regardless of the structure, the three-axis motion structure will be more or less exposed. For example, the 3D printer disclosed in the Chinese utility model patent with announcement number CN207859499U has a gantry structure, and the X-axis motion mechanism is completely exposed to the outside through its motion components and drive components mounted on the gantry support. This not only creates the risk of inherent motion friction and external collisions, affecting the normal operation of 3D printing, but also increases the cost of equipment installation and maintenance. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses an axial motion mechanism of a 3D printer, which can hide part of the motion mechanism, thereby reducing collision risks and installation and maintenance costs.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

[0005] An axial motion mechanism of a 3D printer comprises a first axial profile and two second axial profiles respectively arranged at both ends of the first axial profile, wherein the first axial profile is perpendicular to the second axial profile and can be moved and positioned along the second axial profile; the side wall of each second axial profile is provided with a slide groove along the axis of the second axial profile, wherein a sliding assembly capable of moving along the slide groove is clamped in the slide groove, and the two ends of the first axial profile are respectively fixedly connected to the two sliding assemblies.

[0006] Furthermore, the first axial profile and the second axial profile are respectively set as an X-axis guide profile and a Z-axis guide profile, the upper end of the slide groove passes through the Z-axis guide profile, and the top surfaces of the two Z-axis guide profiles are detachably installed with a beam for forming a gantry.

[0007] Furthermore, a screw nut pair is provided in the slide groove, the nut of the screw nut pair is installed and fixed on the sliding assembly, the upper end of the screw of the screw nut pair is rotatably installed on the beam through a bearing, and the lower end of the screw is connected to the drive motor installed at the bottom end of the Z-axis guide profile.

[0008] Furthermore, the sliding assembly includes a sliding seat, and rollers are installed on both sides of the sliding seat for rolling against corresponding sliding groove walls.

[0009] Furthermore, the roller is configured as a U-shaped wheel with a wheel surface concave to form an arc groove, and the groove wall of the sliding groove is fixed with a guide convex strip adapted to engage with the arc groove of the U-shaped wheel.

[0010] Furthermore, two rollers are installed on one side of the sliding seat along the Z-axis guide profile, and a roller is installed on the other side of the sliding seat through a tensioning block. An elastic element is connected between the sliding seat and the tensioning block, which can make the corresponding roller tend to move away from the sliding seat.

[0011] Furthermore, one end of the tensioning block is hinged to the corresponding side of the sliding seat through a hinge shaft coaxial with the roller, and the other end of the tensioning block is connected to the corresponding side of the sliding seat through a spring sheet, and the corresponding roller is installed on the side of the tensioning block close to the corresponding slide groove wall.

[0012] Furthermore, the sliding seat is provided with a slot for slidingly inserting the corresponding tensioning block, a spring is provided between the inner end of the tensioning block and the bottom of the slot, and a corresponding roller is installed on the outer end of the tensioning block.

[0013] Furthermore, the sliding seat is screwed with a set screw for positioning the distance between the tensioning block and the sliding seat.

[0014] Furthermore, the two groove walls of the sliding groove extend inward to narrow the groove opening, the first axial profile is offset to one side of the two second axial profiles, and an offset bracket is connected between the first axial profile and the sliding assembly.

[0015] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0016] The axial motion mechanism of the 3D printer disclosed in the utility model can hollow out the axial profile to form a slide groove for supporting and guiding and hiding the motion mechanism, thereby avoiding collisions, facilitating the normal operation of the 3D printer, and reducing maintenance costs. In addition, the hidden installation is more convenient after the integrated design, simplifying the assembly process and improving assembly efficiency.

[0017] In addition, the roller tensioning mechanism designed in the utility model not only facilitates the removal and installation of the sliding assembly from the top of the profile when the roller is pressed and recovered, but also enables the sliding assembly and the profile to be tightly fitted and stably connected after installation. Moreover, once the slide groove is worn, the tensioning structure can be used for adjustment and compensation to ensure the vertical state and overall printing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the implementation structure of the utility model;

[0019] Figure 2 is a schematic top view of the assembly connection structure of the sliding component;

[0020] Figure 3 It is a partial side view schematic diagram of the assembly connection structure of the sliding component.

[0021] In the figure: 1. X-axis guide profile; 2. Z-axis guide profile; 201. Slide groove; 202. Guide rib; 3. Sliding assembly; 301. Sliding seat; 302. Roller; 303. Tensioning block; 4. Crossbeam; 5. Screw; 6. Set screw; 7. Offset bracket. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, these are merely corresponding to the drawings of the present invention and are for the convenience of describing the present invention. They do not indicate or imply that the devices or components referred to must have a specific direction. Example 1:

[0023] Combined with attachment Figure 1 and 3 The axial motion mechanism of the 3D printer comprises a first axial profile and two second axial profiles respectively arranged at both ends of the first axial profile, the first axial profile being perpendicular to the second axial profile and being able to move and position along the second axial profile; the side wall of each second axial profile is provided with a slide groove 201 along the axial direction of the second axial profile, usually, the first axial profile and the second axial profile are respectively provided as an X-axis guide profile 1 and a Z-axis guide profile 2, the upper end of the slide groove 201 passes through the Z-axis guide profile 2, and the top surfaces of the two Z-axis guide profiles 2 are detachably mounted with a gantry for forming a gantry. The crossbeam 4 can play a role in positioning and supporting. Specifically, a plug block corresponding to the top opening of the Z-axis guide profile 2 can be set on the crossbeam 4, or it can be directly connected with bolts to achieve the purpose of quick disassembly, so that the crossbeam 4 can be quickly assembled after the sliding component 3 is installed from the top of the Z-axis guide profile 2; the sliding component 3 that can move along the slide groove is clamped in the slide groove 201, and the two ends of the X-axis guide profile 1 are respectively fixedly connected to the two sliding components 3. The hidden design of the sliding component 3 can avoid collision, which is conducive to the normal operation of the 3D printer and reduces maintenance costs.

[0024] As needed, a screw nut pair is provided in the slide groove 201, and the nut of the screw nut pair is fixed to the sliding assembly 3. The upper end of the screw 5 of the screw nut pair is rotatably installed on the crossbeam 4 through a bearing, and the lower end of the screw 5 is connected to the drive motor installed at the bottom end of the Z-axis guide profile 2. The screw 5 is driven to rotate by the rotation of the drive motor. Under the limiting guidance of the slide groove 201 and the transmission action from the nut, the sliding assembly 3 is connected to the nut and moved along the Z-axis guide profile 2 to be positioned.

[0025] When installing the axial motion mechanism of the 3D printer of the present invention, the X-axis guide profile 1 and the two sliding components 3 can be connected first, of course, the screw and nut pair can also be included, and then the crossbeam 4 can be opened. The two sliding components 3 are then pressed into the slide groove 201 from the upper ends of the two Z-axis guide profiles 2, and then the crossbeam 4 is fixed. The motion components are hidden to avoid collisions and greatly simplify the assembly process. Example 2:

[0026] As attached Figure 2 and 3 As shown, based on the first embodiment, the sliding assembly 3 is designed to include a sliding seat 301. Rollers 302 are installed on both sides of the sliding seat 301, which roll against the walls of the corresponding chute 201 to ensure that the sliding assembly 3 can move more flexibly. In order to prevent the sliding assembly 3 from moving, the rollers 302 can be set as U-shaped wheels with a concave wheel surface to form an arc groove. The chute 201 wall is fixed with a guide ridge 202 that fits and abuts against the arc groove of the U-shaped wheel, thereby ensuring the verticality of the movement of the sliding assembly 3 and the stability of the overall printing.

[0027] As needed, two rollers 302 are installed on one side of the sliding seat 301 along the Z-axis guide profile 2, and a roller 302 is installed on the other side of the sliding seat 301 through a tensioning block 303. An elastic element is connected between the sliding seat 301 and the tensioning block 303, which can make the corresponding roller 302 have a tendency to move away from the sliding seat 301. The elastic element can be specifically set as a spring or the like. The designed roller tensioning mechanism not only facilitates the removal and installation of the sliding assembly 3 from the top of the profile when the roller 302 is pressed and recovered, but also can achieve a tight fit and stable connection between the sliding assembly 3 and the profile after installation. In addition, once the slide groove is worn, the tensioning structure can be used to adjust and compensate to ensure the vertical state and overall printing accuracy. The specific tensioning scheme is not limited to the following two. The first is that one end of the tensioning block 303 is connected to the roller The coaxial hinge shaft 302 is hinged to the corresponding side of the sliding seat 301, and the other end of the tensioning block 303 is connected to the corresponding side of the sliding seat 301 through a spring sheet, and the tensioning block 303 is installed with a corresponding roller 302 near the side of the corresponding slide groove 201 wall; the second type, the sliding seat 301 is provided with a slot for slidingly inserting the corresponding tensioning block 303, a spring is provided between the inner end of the tensioning block 303 and the bottom of the slot, and the outer end of the tensioning block 303 is installed with the corresponding roller 302; in addition, the sliding seat 301 is screwed with a fixing screw 6 for positioning the distance between the tensioning block 303 and the sliding seat 301, and the fixing screw 6 can actively adjust the tension of the roller 302 to prevent elastic shaking. For example, in the second tensioning scheme, the fixing screw 6 can be screwed into the slot of the sliding seat 301 to position the corresponding tensioning block 303. Example 3:

[0028] On the basis of Example 1, the two groove walls of the slide groove 201 are designed to extend inward to narrow the groove opening to reduce the exposed area. The first axial profile is offset to one side of the two second axial profiles. An offset bracket 7 is connected between the first axial profile and the sliding component 3. The offset setting can increase the setting length and layout space of the first axial profile.

[0029] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. An axial motion mechanism for a 3D printer, comprising a first axial profile and two second axial profiles disposed at either end of the first axial profile, wherein the first axial profile is perpendicular to the second axial profile and can be moved and positioned along the second axial profile, and wherein: The side wall of each second axial profile is provided with a slide groove (201) along the axial direction of the second axial profile, a sliding component (3) capable of moving along the slide groove is clamped in the slide groove (201), and both ends of the first axial profile are respectively fixedly connected to the two sliding components (3).

2. The axial motion mechanism of a 3D printer according to claim 1, wherein: The first axial profile and the second axial profile are respectively provided as an X-axis guide profile (1) and a Z-axis guide profile (2); the upper end of the slide groove (201) passes through the Z-axis guide profile (2); and a crossbeam (4) for forming a gantry is detachably mounted on the top surfaces of the two Z-axis guide profiles (2).

3. The axial motion mechanism of a 3D printer according to claim 2, wherein: A screw nut pair is provided in the slide groove (201), the nut of the screw nut pair is fixedly mounted on the sliding assembly (3), the upper end of the screw rod (5) of the screw nut pair is rotatably mounted on the crossbeam (4) through a bearing, and the lower end of the screw rod (5) is transmission-connected to a driving motor mounted on the bottom end of the Z-axis guide profile (2).

4. The axial motion mechanism of a 3D printer according to claim 1, wherein: The sliding assembly (3) comprises a sliding seat (301), and rollers (302) are mounted on both sides of the sliding seat (301) for rolling against the walls of corresponding sliding grooves (201).

5. The axial motion mechanism of a 3D printer according to claim 4, characterized in that: The roller (302) is configured as a U-shaped wheel with an inwardly concave wheel surface forming an arc groove, and a guide convex strip (202) adapted to engage with the U-shaped wheel arc groove is fixed to the groove wall of the sliding groove (201).

6. The axial motion mechanism of a 3D printer according to claim 4, characterized in that: Two rollers (302) are installed on one side of the sliding seat (301) along the Z-axis guide profile (2), and a roller (302) is installed on the other side of the sliding seat (301) via a tensioning block (303). An elastic element is connected between the sliding seat (301) and the tensioning block (303) to enable the corresponding roller (302) to have a tendency to move away from the sliding seat (301).

7. The axial motion mechanism of a 3D printer according to claim 6, characterized in that: One end of the tensioning block (303) is hinged to the corresponding side of the sliding seat (301) via a hinge shaft coaxial with the roller (302), and the other end of the tensioning block (303) is connected to the corresponding side of the sliding seat (301) via a spring sheet. The tensioning block (303) is installed on the side of the corresponding roller (302) close to the groove wall of the corresponding sliding groove (201).

8. The axial motion mechanism of a 3D printer according to claim 6, wherein: The sliding seat (301) is provided with a slot for slidingly inserting a corresponding tensioning block (303), a spring is provided between the inner end of the tensioning block (303) and the bottom of the slot, and a corresponding roller (302) is installed at the outer end of the tensioning block (303).

9. The axial motion mechanism of a 3D printer according to claim 6, wherein: The sliding seat (301) is screwed with a set screw (6) for positioning the distance between the tensioning block (303) and the sliding seat (301).

10. The axial motion mechanism of a 3D printer according to claim 1, wherein: The two groove walls of the sliding groove (201) extend inward to narrow the groove opening, the first axial profile is biased to one side of the two second axial profiles, and an biased bracket (7) is connected between the first axial profile and the sliding assembly (3).

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