Heating platform suitable for ultra-large 3D printing equipment

Abstract

The utility model discloses a heating platform suitable for ultra-large 3D printing equipment. The heating platform comprises a base, and a heating layer and a printing adhesion layer are sequentially arranged above the base. A plurality of evenly-distributed oil ways are arranged in the heating layer, and a heat preservation layer is arranged below the heating layer. And the heating layer is connected with a mold temperature controller. According to the utility model, a plurality of oil ways are uniformly arranged in the heating platform, the heating platform can be uniformly heated through circularly flowing hot oil, a printing material is laid above the printing adhesion layer, and the bottom warping problem of the 3D printing mold can be greatly reduced and the product quality of the 3D printing mold can be improved through uniform temperature control of the bottom heating layer.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a heating platform suitable for super-large 3D printing equipment. Background Art

[0002] In recent years, super-large 3D printing equipment has developed rapidly and is widely used in the research and development design of the aerospace, automotive and shipbuilding fields, providing great help in the iteration process. Super-large 3D printing equipment has the advantage of high production efficiency, which can accelerate the rapid development of research and development projects; at the same time, it is favored by enterprises and governments for its environmental protection and recyclability.

[0003] When 3D printing molds, warping problems often occur due to the uneven temperature field at the bottom of the 3D printing mold during the cooling process. Especially for 3D printing molds with larger curvatures, the warping will be more serious and may even become the primary factor for printing failure, resulting in a waste of resources. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a heating platform suitable for super-large 3D printing equipment, which can control the uniformity of the bottom temperature field, reduce the warping of the bottom of the 3D printing mold, and improve the product quality.

[0005] To this end, the technical solution of the utility model is: a heating platform suitable for ultra-large 3D printing equipment, including a base, a heating layer and a printing attachment layer are arranged in sequence above the base; a number of evenly distributed oil circuits are arranged in the heating layer, and an insulation layer is arranged under the heating layer; the heating layer is connected to a mold temperature controller.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the printed attachment layer includes a paving layer and a connecting layer, and the connecting layer is located between the paving layer and the heating layer, and is used to connect the paving layer and the heating layer or to connect the paving layer itself.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the paving layer is stacked with plastic particles and formed into a whole by an adhesive; the plastic particles are one of acrylonitrile-butadiene-styrene terpolymer (ABS plastic), styrene-acrylonitrile-acrylate rubber (ASA plastic), polypropylene (PP plastic), and polycarbonate (PC plastic).

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of baffles are installed on the upper surface of the heating layer, the baffles form a rectangular auxiliary frame, and the printed attachment layer is located in the rectangular auxiliary frame.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the radial cross-section of the baffle is Z-shaped, and the baffle is installed on the heating layer by bolts; a plurality of threaded holes are provided on the upper surface of the heating layer, and auxiliary fixing bolts are installed at the threaded holes.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the base includes a plurality of columns, and a hydraulic lifting mechanism is provided in the columns for leveling the base.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Multiple oil circuits are evenly arranged in the heating platform. The heating platform can be evenly heated by circulating hot oil. The printing material is laid on the printing attachment layer. The uniform temperature control of the bottom heating layer can greatly reduce the warping problem of the bottom of the 3D printing mold and improve the quality of the 3D printing mold product.

[0013] 2. A leveling mechanism is designed on the base to adjust the height and flatness of the heating platform through hydraulic pressure, making the size of the printed product more accurate.

[0014] 3. Install auxiliary fixing bolts above the heating layer to form an embedded structure with the laid paving layer to assist in fixing the paving layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of

[0018] Figure 3 It is an exploded view of the parts of the utility model;

[0019] Figure 4 This is a structural cross-sectional view of the heating layer of the utility model.

[0020] Marked in the figure are: base 1, heating layer 2, oil circuit 21, threaded hole 22, printing attachment layer 3, paving layer 31, connecting layer 32, mold temperature controller 4, baffle 5, auxiliary fixing bolt 6. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0023] See the attached drawings. The heating platform described in this embodiment has a size greater than 1m×1m, and includes a base 1, on which a heating layer 2 and a printing attachment layer 3 are arranged in sequence; the base 1 includes a plurality of columns, and a hydraulic lifting mechanism is arranged inside the columns, and the height of the platform can be adjusted by hydraulic means, and a leveling operation can be performed by cooperating with external equipment such as a laser tracker, a three-coordinate measuring instrument, a 3D printer head, and other equipment.

[0024] The heating layer 2 is provided with a number of evenly distributed oil passages 21, and a heat preservation layer is provided below the heating layer; the heating layer 2 is connected to the mold temperature controller 4. The distance between two adjacent oil passages 21 is about 110 mm, there are 16 oil passages in total, the thickness of the heating layer is 48 mm, and the flatness is required to be within ±0.5 mm.

[0025] The printing attachment layer 3 includes a paving layer 31 and a connecting layer 32. The paving layer 31 is in direct contact with the printing material, and the connecting layer 32 is between the paving layer 31 and the heating layer 2, and is used to connect the paving layer 31 and the heating layer 2 or to connect the paving layer 31 itself. The paving layer 31 is formed as a whole by stacking plastic particles and adhesives; the plastic particles are one of acrylonitrile-butadiene-styrene terpolymer (ABS plastic), styrene-acrylonitrile-acrylate rubber (ASA plastic), polypropylene (PP plastic), and polycarbonate (PC plastic).

[0026] The upper surface of the heating layer 2 is provided with four baffles 5, the radial cross section of the baffles 5 is Z-shaped, the baffles are installed on the heating layer by bolts, and the four baffles form a rectangular auxiliary frame, and the paving material is laid flat in the rectangular auxiliary frame to form a paving layer. The upper surface of the heating layer 2 is provided with a plurality of threaded holes 22, and auxiliary fixing bolts 6 are installed at the threaded holes. After the paving layer 31 is agglomerated, it forms an embedded structure with the auxiliary fixing bolts 6, which is used to assist in fixing the paving layer.

[0027] Example 1

[0028] The size of the printing heating platform in this embodiment is 2m×2m, and printing includes the following steps:

[0029] 1) Use a laser tracker to level the heating platform so that the flatness is within ±0.5mm;

[0030] 2) After the platform is leveled, the Z-shaped baffles 5 are sequentially installed above the heating layer 2 to form a rectangular auxiliary frame, and the auxiliary fixing bolts 6 are installed at the same time;

[0031] 3) A paving layer 31 is manufactured above the heating layer. The paving layer 31 uses plastic particles as glass fiber reinforced ABS material. The adhesive used for bonding is J-133C structural adhesive. First, the J-133C structural adhesive is prepared, and the ratio of component A: component B is 5:1. After stirring evenly, it is evenly applied on the heating layer, and then the glass fiber reinforced ABS particles are evenly spread on the structural adhesive layer. After the curing is completed, the J-133C structural adhesive is evenly applied again and the glass fiber reinforced ABS particles are laid. Repeat this process several times. In this embodiment, the printed attachment layer 3 is designed to be 15 mm;

[0032] 4) The mold temperature controller 4 is set to heat at 85°C. After heating for 2 hours, the hot oil circulates in the oil circuit 21, so that the temperature field of the printed adhesion layer 3 is 82-85°C. The printing material is 20% carbon fiber reinforced PC material, the printing size is 1.3m×0.5m×1.5m, and the warping height is reduced by 15mm after printing.

[0033] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A heating platform suitable for ultra-large 3D printing equipment, characterized by: It comprises a base, a heating layer and a printing attachment layer are arranged on the top of the base in sequence; a plurality of evenly distributed oil paths are arranged in the heating layer, and a heat preservation layer is arranged under the heating layer; the heating layer is connected to a mold temperature controller.

2. A heating platform suitable for ultra-large 3D printing equipment as claimed in claim 1, characterized in that: The printed attachment layer includes a paving layer and a connecting layer. The connecting layer is located between the paving layer and the heating layer and is used to connect the paving layer and the heating layer or to connect the paving layer itself.

3. A heating platform suitable for ultra-large 3D printing equipment as claimed in claim 2, characterized in that: The paving layer is formed by stacking plastic particles and forming a whole through an adhesive; the plastic particles are one of acrylonitrile-butadiene-styrene terpolymer, styrene-acrylonitrile-acrylate rubber, polypropylene, and polycarbonate.

4. A heating platform suitable for ultra-large 3D printing equipment as claimed in claim 1, characterized in that: A plurality of baffles are installed on the upper surface of the heating layer, the baffles form a rectangular auxiliary frame, and the printed attachment layer is located in the rectangular auxiliary frame.

5. A heating platform suitable for ultra-large 3D printing equipment as claimed in claim 4, characterized in that: The radial cross section of the baffle is Z-shaped, and the baffle is installed on the heating layer by bolts; a plurality of threaded holes are provided on the upper surface of the heating layer, and auxiliary fixing bolts are installed at the threaded holes.

6. A heating platform suitable for ultra-large 3D printing equipment as claimed in claim 1, characterized in that: The base comprises a plurality of columns, and a hydraulic lifting mechanism is arranged inside the columns for leveling the base.

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