Fixing device for laser scanning system and 3D printer

Abstract

The utility model relates to the technical field of 3D printing, in particular to a fixing device for a laser scanning system and a 3D printer. The fixing device comprises a frame body and at least one positioning assembly, each positioning assembly comprises a pressing piece, an elastic buffering piece, an adjusting piece and at least two connecting pieces distributed on the two sides of an object to be fixed, one ends of the connecting pieces are fixedly connected to a bearing face, and the pressing pieces and the adjusting pieces are movably connected to the connecting pieces. And the position of the adjusting piece on the connecting piece can be adjusted. When the fixing device is used, the laser scanning system of the 3D printer to be fixed is located between the bearing face and the pressing piece, the pressing piece is pressed through the elastic buffering piece, the pressing piece and the bearing face jointly clamp a shell of the laser scanning system, and therefore the 3D printer is fixed. In the heating expansion process of the frame body, the friction force between the frame body and the laser scanning system is in a proper range, stress generated by thermal deformation of the frame body can overcome the friction force easily, and sudden movement cannot be generated.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a fixing device for a laser scanning system and a 3D printer. Background Technology

[0002] A laser 3D printer is an advanced additive manufacturing device that uses laser technology to print layer by layer to build three-dimensional objects.

[0003] Existing 3D printers include a laser and a laser scanning system. The laser emits a laser beam, and the laser scanning system focuses the laser beam onto the printing surface for scanning and printing.

[0004] In existing 3D printers, the outer shell of the laser scanning system is typically fixed directly to the mounting frame using bolts. Once the bolts are tightened, the pressure from the bolts creates strong friction between the outer shell and the mounting frame. Since the laser beam is a high-energy beam, it generates significant heat during operation, causing the device temperature to rise. While the laser scanning system usually has a cooling system, limiting temperature fluctuations, the mounting frame is more susceptible to ambient temperature changes. Due to thermal expansion and contraction, when the stress inside the mounting frame exceeds the friction between the mounting frame and the outer shell of the laser scanning system, this stress can suddenly be released. This can easily lead to sudden displacement of the laser scanning system during printing, resulting in a significant shift in the printed position. Utility Model Content

[0005] To address the aforementioned deficiencies, the technical problem to be solved by this utility model is to provide a fixing device for a laser scanning system and a 3D printer. This fixing device can fix the laser scanning system of the 3D printer and prevent the laser scanning system from suddenly shifting due to thermal deformation of the fixing frame during the printing process.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] In a first aspect, this utility model provides a fixing device for a laser scanning system, comprising:

[0008] A frame, on which a load-bearing surface is provided;

[0009] At least one positioning component, the positioning component including a clamping member, an elastic buffer member, an adjusting member, and at least two connecting members distributed on both sides of the object to be fixed, one end of the connecting member being fixedly connected to the bearing surface, the clamping member and the adjusting member being movably connected to the connecting member, the clamping member being located between the bearing surface and the adjusting member, the two ends of the elastic buffer member being connected to the clamping member and the adjusting member respectively, the position of the adjusting member on the connecting member being adjustable, and the clamping member being used to clamp the object to be fixed together with the bearing surface.

[0010] By adopting the above solution, during use, the laser scanning system portion of the 3D printer to be fixed is placed between the bearing surface and the clamping component. The elastic buffer is pressed down by the adjusting component, and the elastic buffer presses down on the clamping component, so that the clamping component and the bearing surface together clamp the outer shell of the laser scanning system, thereby fixing the 3D printer. Since the outer shell of the laser scanning system is fixed by the clamping component and the bearing surface, and the position of the adjusting component on the connecting component is adjustable, the friction between the outer shell of the laser scanning system and the frame can be controlled within a suitable range. During the thermal expansion of the frame, the friction between the frame and the laser scanning system remains within a suitable range, making it easier for the stress generated by the thermal deformation of the frame to overcome the friction, preventing sudden movement.

[0011] Preferably, the connector is a fixed rod, one end of which is fixedly connected to the frame. The fixed rod provides better rigidity and facilitates the installation of the clamping components.

[0012] Preferably, the clamping member has several through holes corresponding one-to-one with the connecting member. The connecting member passes through the corresponding through hole, and its free end passes through the corresponding through hole. The adjusting member is a nut, which is threadedly connected to the connecting member. The threaded engagement of the nut and the connecting member allows for easy adjustment of the clamping member and the bearing surface to clamp the object to be fixed. Furthermore, adjusting the nut allows for easy adjustment of the pressure exerted by the clamping member on the object to be fixed.

[0013] Preferably, the elastic buffer is a spring, which is sleeved on the connecting member. Because the elastic buffer can adapt to the expansion or contraction of the outer shell of the object to be fixed, it maintains a good fixing effect between the clamping member and the bearing surface. With the spring sleeved on the connecting member, the elastic buffer is more stable during operation.

[0014] Preferably, the adjusting element is a wing nut. Wing nuts are more convenient to operate during adjustment.

[0015] Preferably, the clamping member is plate-shaped and is arranged parallel to the bearing surface. Because the clamping member is plate-shaped, it increases the contact area with the object to be fixed, thereby reducing the local pressure exerted by the clamping member on the object and preventing damage.

[0016] Preferably, two positioning components are provided at intervals along the length of the object to be fixed.

[0017] Preferably, the frame includes two parallel longitudinal beams, with a first crossbeam and two second crossbeams positioned between them. The first crossbeam is located between the two second crossbeams, and there is a gap between the first and second crossbeams. Both the first and second crossbeams have load-bearing surfaces. The object to be fixed is supported by the first and second crossbeams, and the gap between the first and second crossbeams facilitates the passage of the laser scanning system of the 3D printer, which guides the laser beam onto the printing plane.

[0018] Preferably, the first crossbeam is provided with a limiting pin, and the outer shell of the object to be fixed is provided with a limiting groove corresponding to the limiting pin, with the limiting pin inserted into the corresponding limiting groove. The positioning effect of the object to be fixed can be improved by the cooperation between the limiting pin and the limiting groove on the outer shell of the object to be fixed.

[0019] Secondly, this utility model also provides a 3D printer, including the aforementioned fixing device for a laser scanning system.

[0020] In summary, the fixing device for a laser scanning system provided by this utility model has at least the following beneficial effects:

[0021] 1. The fixing device allows the internal stress of the frame to be released after thermal expansion, while maintaining the fixation effect on the 3D printer.

[0022] 2. The overall structure is compact and easy to use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any novel effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention (the longitudinal beam on the right side is hidden);

[0026] Figure 3 yes Figure 2 An enlarged view of point a in the middle;

[0027] Figure 4This is a three-dimensional structural diagram of the first crossbeam in this utility model from a top-down perspective;

[0028] Figure 5 A three-dimensional structural diagram of the first crossbeam in this utility model from a bottom-view perspective;

[0029] Figure 6 This is a three-dimensional structural diagram of the object to be fixed being assembled onto the fixing device in this utility model, viewed from a top perspective.

[0030] Figure 7 This is a three-dimensional structural diagram of the object to be fixed being assembled onto the fixing device from a downward viewing angle.

[0031] The attached reference numerals include: frame 1, longitudinal beam 101, first crossbeam 102, second crossbeam 103, support column 104, limit pin 105, reinforcing rib 106, mounting hole 107, positioning component 2, clamping component 201, connecting component 202, adjusting component 203, elastic buffer component 204, object to be fixed 3. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the following description is provided in conjunction with the appendix. Figure 1-7 The present invention will be further described in detail below with reference to specific embodiments.

[0033] Please see Figure 1-7 This embodiment provides a fixing device for a laser scanning system, including a frame 1 and at least one positioning component 2. The frame 1 has a bearing surface for supporting the object 3 to be fixed. The object 3 can specifically be the laser scanning system and its housing in a 3D printer, or other equipment or components requiring fixing and operating in environments with high temperatures. The positioning component 2 includes a clamping member 201, an elastic buffer 204, an adjusting member 203, and at least two connecting members 202 distributed on both sides of the object 3. One end of each connecting member 202 is fixedly connected to the bearing surface. The clamping member 201 and the adjusting member 203 are movably connected to the connecting member 202. The clamping member 201 is located between the bearing surface and the adjusting member 203. Both ends of the elastic buffer 204 are connected to the clamping member 201 and the adjusting member 203, respectively. The position of the adjusting member 203 on the connecting member 202 is adjustable. The clamping member 201, together with the bearing surface, clamps the object 3 to be fixed. The clamping member 201 is specifically disposed above the bearing surface, and the object to be fixed 3 is installed between the bearing surface and the clamping member 201. The clamping member 201 is preferably plate-shaped, and the plate-shaped clamping member 201 is arranged parallel to the bearing surface to increase the contact area between the clamping member 201 and the object to be fixed 3.

[0034] Preferably, the connector 202 is a fixing rod, with one end of the connector 202 fixedly connected to the frame 1. Specifically, the fixing rod can be a metal round rod, with its lower end fixedly connected to the frame 1.

[0035] Preferably, the clamping member 201 has several through holes corresponding one-to-one with the connecting member 202. The connecting member 202 passes through the corresponding through holes, and its free end passes through the corresponding through hole. The adjusting member 203 is a nut, located on the upper side of the clamping member 201, and is threadedly connected to the connecting member 202. Specifically, the upper end of the connecting member 202 passes through the corresponding through hole, and the adjusting member 203 is a nut threadedly connected to the upper end of the connecting member 202. By rotating the nut, the elastic buffer member 204 and the clamping member 201 can be moved along the length of the connecting member 202, thereby adjusting the position of the clamping member 201 on the connecting member 202. To facilitate the rotation of the adjusting member 203, the adjusting member 203 specifically adopts a wing nut as used in the prior art.

[0036] Preferably, the elastic buffer 204 can be a spring, which is sleeved on the connector 202.

[0037] Preferably, two positioning components 2 are provided at intervals along the length direction of the object to be fixed 3.

[0038] Preferably, the frame 1 includes two parallel longitudinal beams 101, with a first crossbeam 102 and two second crossbeams 103 positioned between them. The first crossbeam 102 is located between the two second crossbeams 103, and there is a gap between the first crossbeam 102 and the second crossbeams 103. Both the upper sides of the first crossbeam 102 and the second crossbeam 103 are provided with bearing surfaces. The left and right ends of the first crossbeam 102 and the second crossbeam 103 are connected to the corresponding ends of the longitudinal beams 101 by bolts. The longitudinal beams 101 are preferably made of I-beams, which have good bending moment resistance, and the base plate of the I-beams facilitates bolt installation, allowing the I-beams to be connected to the first crossbeam 102 and the second crossbeams 103 by bolts. The first crossbeam 102 and the second crossbeam 103 are each provided with positioning components 2. The specific number and position of the positioning components 2 are determined according to the number and position of the equipment to be fixed (i.e., the object to be fixed 3). In this embodiment, four objects to be fixed 3 are specifically assembled. Each object to be fixed 3 is provided with two positioning components 2. The two ends of the object to be fixed 3 are respectively supported on the corresponding first crossbeam 102 and second crossbeam 103.

[0039] Preferably, the lower sides of both ends of the longitudinal beam 101 are fixedly connected to support columns 104, and the longitudinal beam 101 is connected to the corresponding support columns 104 by bolts.

[0040] Preferably, the first crossbeam 102 is provided with two limiting pins 105, which are distributed along the length of the first crossbeam 102. The outer shell of the object to be fixed 3 is provided with two limiting grooves corresponding to the limiting pins 105, and the limiting pins 105 are inserted into the corresponding limiting grooves. The first crossbeam 102 is plate-shaped, and the bottom of the first crossbeam 102 is provided with several reinforcing ribs 106 along the longitudinal direction. The middle part of the first crossbeam 102 is provided with a mounting hole 107.

[0041] Working Principle: In use, the laser scanning system of the 3D printer to be fixed is placed between the bearing surface and the clamping member 201. The adjusting member 203 presses the elastic buffer member 204, and the elastic buffer member 204 presses down on the clamping member 201, so that the clamping member 201 and the bearing surface together clamp the outer shell of the laser scanning system, thereby fixing the 3D printer. Since the outer shell of the laser scanning system is clamped and fixed by the clamping member 201 and the bearing surface, the position of the adjusting member 203 on the connecting member 202 is adjustable, and there is an elastic buffer member 204 between the adjusting member 203 and the clamping member 201, the friction between the outer shell of the laser scanning system and the frame 1 can be controlled within a suitable range. During the thermal expansion of the frame 1, the friction between the frame 1 and the laser scanning system is within a suitable range, and the stress generated by the thermal deformation of the frame 1 easily overcomes the friction, preventing sudden movement.

[0042] Based on the same inventive concept, this utility model also provides a 3D printer, including the above-mentioned fixing device for a laser scanning system.

[0043] It should be noted that words indicating direction in this article, such as "up" and "down," are all in the format of "upper" and "lower." Figure 1 The direction setting is for ease of description only and has no other specific meaning.

[0044] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0045] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A fixture for a laser scanning system, characterized by, The utility model relates to a fixing device for laser scanning system, including: A frame (1) is equipped with the bearing surface on the frame (1); At least one positioning assembly (2), the positioning assembly (2) includes compression (201), elastic buffer (204), adjusting part (203) and at least two distribution in the both sides of the object (3) to be fixed connecting piece (202), the connecting piece (202) one end fixed connection is in the bearing surface, compression (201) and adjusting part (203) are all movably connected in connecting piece (202), compression (201) is located between the bearing surface and adjusting part (203), the both ends of elastic buffer (204) are connected with compression (201) and adjusting part (203) respectively, the position of adjusting part (203) on connecting piece (202) can be adjusted, compression (201) is used for with the bearing surface together and clamps the object (3) to be fixed.

2. A fixture for a laser scanning system according to claim 1, characterized in that The connecting piece (202) is a fixed rod, and one end of the connecting piece (202) is fixedly connected with the frame (1).

3. A fixture for a laser scanning system according to claim 2, characterized in that The compression (201) is equipped with a plurality of through holes corresponding to the connecting piece (202), the connecting piece (202) is arranged in the corresponding through hole, the free end of the connecting piece (202) passes through the corresponding through hole, the adjusting part (203) is a nut, and the adjusting part (203) is threadedly connected with the connecting piece (202).

4. A fixture for a laser scanning system according to claim 3, characterized in that The elastic buffer (204) is a spring, and the spring is sleeved on the connecting piece (202).

5. A fixture for a laser scanning system according to claim 3, characterized in that The adjusting part (203) is a butterfly nut.

6. A fixture for a laser scanning system according to any one of claims 1-5, characterized in that, The compression (201) is a plate, and the plate-shaped compression (201) is arranged in parallel with the bearing surface.

7. A fixture for a laser scanning system according to any one of claims 1-5, characterized in that, The positioning assembly (2) is spaced apart along the length direction of the object (3) to be fixed.

8. A fixture for a laser scanning system according to any one of claims 1-5, characterized in that, The frame (1) includes two parallel longitudinal beams (101), a first cross beam (102) and two second cross beams (103) are arranged between the two longitudinal beams (101), the first cross beam (102) is located between the two second cross beams (103), the first cross beam (102) and the second cross beam (103) have a spacing, and the first cross beam (102) and the second cross beam (103) are both provided with the bearing surface.

9. A fixture for a laser scanning system according to claim 8, characterized in that The first cross beam (102) is provided with a limiting pin (105), and the shell of the object (3) to be fixed is provided with a limiting groove corresponding to the limiting pin (105), and the limiting pin (105) is arranged in the corresponding limiting groove.

10. A 3D printer characterized by, The utility model relates to a fixing device for laser scanning system, including: A frame (1) is equipped with the bearing surface on the frame (1);

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