A multi-directional dehumidification device for 3D laser printer

Abstract

The present invention relates to a multi-directional dehumidification device for a 3D laser printer, comprising: a laser printer body, a heating chamber arranged on the laser printer body and a drying section arranged on the heating chamber; the drying section comprises two rows of a plurality of heating sections arranged on the heating chamber, two rows of a plurality of guide cylinders rotatably arranged outside the two rows of a plurality of heating sections and a plurality of drying holes spirally arranged on each of the guide cylinders; the dehumidification and drying work of the metal powder of the present invention is carried out along the periphery thereof and cannot penetrate into the interior, resulting in limited dehumidification effect. Compared with the prior art, two rows of a plurality of heating sections and two rows of a plurality of guide cylinders are arranged in the storage space of the metal powder, the guide cylinders are made of heat-conducting metal material, and heating and dehumidification operations can be performed on the interior of the metal powder at multiple positions.

Description

Technical Field

[0001] The invention relates to the technical field of laser printing, and in particular to a multi-directional dehumidification device for a 3D laser printer. Background Art

[0002] Laser 3D printing is a type of rapid prototyping technology. 3D printing uses a digital model as a basis and then inputs the digital program into the 3D printer, allowing the 3D printer to sinter powdered metal or other materials layer by layer to shape the object.

[0003] The printing materials of 3D laser printers are generally stored in storage bins. In cold and wet weather, the powder materials will be damp and contaminated with moisture, affecting the quality of the printing work. The existing patent number CN201821072474.7 is a 3D printer with a dehumidification function. The dehumidification system has a dehumidification function and can dehumidify the surrounding air to reduce the moisture in the surrounding air, thereby achieving rapid dehumidification in a smaller space of the 3D printer and effectively preventing the photosensitive resin from getting damp. However, the patent still has the following problems.

[0004] The dehumidification system is mainly aimed at the space or the outer surface of the metal powder material. The metal powder is in a piled state when stored. The dehumidification system cannot act on the internal space of the piled metal powder. Its dehumidification direction is single and the dehumidification effect is limited. When the dehumidification function starts to work, the position of the metal powder will not change, resulting in it being unable to be turned over during the dehumidification work and being heated at multiple angles, and dead corners are prone to exist during the dehumidification process. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the technical problem of poor dehumidification method of 3D laser printer in the prior art and provide a multi-directional dehumidification device for 3D laser printer.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a multi-directional dehumidification device for a 3D laser printer, comprising: a laser printer body, a heating chamber arranged on the laser printer body, and a drying part arranged on the heating chamber;

[0007] The drying section comprises two rows of heating parts arranged in the heating chamber, two rows of guide cylinders rotatably arranged outside the two rows of heating parts, and a plurality of drying holes spirally arranged on each of the guide cylinders;

[0008] The plurality of drying holes on two adjacent guide cylinders are arranged in parallel and staggered manner;

[0009] The metal powder is stored in the heating chamber and two rows of guide cylinders are buried behind the heating chamber.

[0010] When the two rows of the plurality of heating parts heat the two rows of the plurality of guide cylinders, the heat can pass through the two rows of the plurality of guide cylinders and the plurality of drying holes to dry the metal powder at multiple angles.

[0011] Further, one of the guide cylinders is connected to a drive motor;

[0012] The multi-directional dehumidification device for a 3D laser printer also includes a transmission part;

[0013] The transmission part includes a plurality of slots circumferentially arranged on the outer wall of each guide cylinder and a toothed belt engaging with the plurality of slots, wherein

[0014] When the driving motor is driven, one of the guide cylinders drives the toothed belt to rotate through a plurality of the clamping grooves, so that the other plurality of guide cylinders rotate in the same direction.

[0015] Furthermore, the multi-directional dehumidification device for the 3D laser printer further includes a fan;

[0016] The fan is connected to a plurality of guide cylinders via a shunt pipe;

[0017] The heating part includes a plurality of heating rings arranged in a straight line and inserted through each of the guide tubes, and two connecting rods arranged between every two of the heating rings;

[0018] Two of the connecting rods are connected to the laser printer body;

[0019] Several of the heating rings are capable of conducting heat to the guide tube, wherein

[0020] By driving the fan, wind can blow the guide tube and the plurality of heating rings through the shunt pipe, so that heat is accelerated to dry the metal powder through the plurality of drying holes.

[0021] Furthermore, a plurality of annular grooves are arranged in a straight line in the guide cylinder;

[0022] A plurality of the heating rings can be inserted and abutted against a plurality of the ring grooves.

[0023] Furthermore, each of the drying holes is provided with a filter screen through which metal powder cannot pass;

[0024] The filter screen is in the shape of a semi-spherical shell;

[0025] The arched surface of the filter screen faces the outside of the guide tube.

[0026] Further, one end of the filter screen is provided with an external threaded cylinder;

[0027] The wall of the drying hole is configured as an internal thread shape;

[0028] The external threaded cylinder can be spirally connected to the drying hole.

[0029] Furthermore, a glass cover is provided at the opening of the heating chamber;

[0030] The glass cover plate is heat-resistant glass.

[0031] Furthermore, the drying hole is expanded, and the expansion direction increases from inside to outside.

[0032] The beneficial effect of the present invention is that the dehumidification and drying work for metal powder is carried out along the periphery and cannot penetrate into the interior, resulting in limited dehumidification effect. Compared with the prior art, two rows of heating parts and two rows of guide tubes are arranged in the storage space of the metal powder. The guide tubes are made of heat-conducting metal material and can perform heating and dehumidification operations on the inside of the metal powder at multiple positions; the guide tubes can rotate to drive the spiral drying holes to change the angle, so that the metal powder is stirred and stressed in the storage state. After the heat is output from the drying holes, the metal powder dehumidified by the guide tubes is heated and dehumidified for the second time. The dehumidification work can be diffusely distributed during the rotation process to avoid the generation of dehumidification dead corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Figure 1 is a perspective view of a preferred embodiment of the present invention;

[0035] Figure 2 is a partial stereogram of a preferred embodiment of the drying section of the present invention;

[0036] Figure 3 is a front view of a transmission part of a preferred embodiment of the present invention;

[0037] Figure 4 The present invention Figure 3 Enlarged view of point A in the middle;

[0038] Figure 5 is a front cross-sectional view of a heating portion of the present invention;

[0039] Figure 6 It is a front view of the filter screen of a preferred embodiment of the present invention.

[0040] In the figure:

[0041] 1. Laser printer body;

[0042] 2. Heating chamber;

[0043] 3. Drying section; 31. Heating section; 311. Heating ring; 312. Connecting rod;

[0044] 32. Guide cylinder; 33. Drying hole;

[0045] 4. Transmission part; 41. Card slot; 42. Toothed belt;

[0046] 5. Filter;

[0047] 6. External threaded barrel;

[0048] 7. Glass cover. DETAILED DESCRIPTION

[0049] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0050] like Figure 1 As shown, Figure 1 : is a stereogram of a preferred embodiment of the present invention; Figure 2 As shown, Figure 2 1 is a partial stereogram of a preferred embodiment of the drying section of the present invention, as shown in FIG. Figure 1-2 As shown, the present invention provides a multi-directional dehumidification device for a 3D laser printer, comprising: a laser printer body 1, a heating chamber 2 arranged on the laser printer body 1, and a drying part 3 arranged on the heating chamber 2,

[0051] The drying section 3 comprises two rows of heating sections 31 arranged on the heating chamber 2, two rows of guide cylinders 32 rotatably arranged outside the two rows of heating sections 31, and a plurality of drying holes 33 spirally arranged on each of the guide cylinders 32, and the hole walls of adjacent drying holes 33 on the same spiral track are collinear, so that the dehumidification range of the plurality of drying holes 33 for the metal powder is the same as that of the guide cylinders 32;

[0052] The plurality of drying holes 33 on two adjacent guide cylinders 32 are arranged in parallel and staggered manner, so that no dehumidification angle is missed;

[0053] The metal powder is stored in the heating chamber 2 and two rows of guide cylinders 32 are buried behind the heating chamber 2.

[0054] When the two rows of heating parts 31 heat the two rows of guide cylinders 32, the heat can pass through the two rows of guide cylinders 32 and the drying holes 33 to dry the metal powder at multiple angles. Specifically, in the prior art, the dehumidification and drying work of the metal powder is carried out along the periphery and cannot penetrate into the interior, resulting in limited dehumidification effect. Compared with the prior art, two rows of heating parts 31 and two rows of guide cylinders 32 are arranged in the storage space of the metal powder. The guide cylinders 32 are made of heat-conducting metal material, and heating and dehumidifying operations can be performed on the inside of the metal powder at multiple positions; the guide cylinders 32 can rotate to drive the spiral drying holes 33 to change their angles, so that the metal powder is stirred and stressed in the storage state. After the heat is released from the drying holes 33, the metal powder dehumidified by the guide cylinders 32 is heated and dehumidified for a second time. The dehumidification work can be diffusely distributed during the rotation process to avoid the generation of dehumidification dead corners.

[0055] This patent also has the following problems: the multiple guide cylinders 32 cannot rotate synchronously;

[0056] like Figure 3 As shown, Figure 3 : is a front view of the transmission part of a preferred embodiment of the present invention; Figure 4 As shown, Figure 4 The present invention Figure 3 The enlarged picture of A in the middle; Figure 3-4 As shown;

[0057] One of the guide cylinders 32 is connected to a drive motor;

[0058] The multi-directional dehumidification device for a 3D laser printer further includes a transmission part 4;

[0059] The transmission part 4 includes a plurality of slots 41 circumferentially arranged on the outer wall of each guide cylinder 32 and a toothed belt 42 engaged with the plurality of slots 41.

[0060] When the driving motor is driven, one of the guide cylinders 32 drives the toothed belt 42 to rotate through the plurality of slots 41, so that the other plurality of guide cylinders 32 rotate in the same direction. Specifically, when the driving motor starts to drive, one of the guide cylinders 32 can drive one circle of the plurality of slots 41 to transmit the toothed belt 42, and the toothed belt 42 transmission force acts on the other circles of the plurality of slots 41 to drive all the other guide cylinders 32 to rotate synchronously, thereby ensuring the consistency of the drying state of the metal powder at multiple angles and achieving balanced dehumidification of the metal powder.

[0061] The patent also has the following problems: the heat dissipation speed of the guide cylinder 32 is slow;

[0062] like Figure 5 As shown, Figure 5 is a front cross-sectional view of a heating portion of the present invention;

[0063] The multi-directional dehumidification device for the 3D laser printer also includes a fan;

[0064] The fan is connected to a plurality of guide cylinders 32 via a shunt pipe;

[0065] The heating part 31 includes a plurality of heating rings 311 arranged in a straight line and inserted into each of the guide tubes 32 , and two connecting rods 312 arranged between every two of the heating rings 311 ;

[0066] Two of the connecting rods 312 are connected to the laser printer body 1;

[0067] The plurality of heating rings 311 can conduct heat to the guide tube 32, wherein

[0068] By driving the fan, wind can blow through the shunt pipe to sweep the guide cylinder 32 and the plurality of heating rings 311, so that the heat is accelerated to pass through the plurality of drying holes 33 to dry the metal powder. Specifically, when the fan is working, wind force enters each guide cylinder 32 through the shunt pipe, and the temperature of each guide cylinder 32 is discharged through the plurality of drying holes 33. During this process, the process of each heating ring 311 transferring heat to the guide cylinder 32 will not hinder the process of wind force transfer. The connecting rod 312 can maintain the connection state between two adjacent heating rings 311, and it is combined with the heating ring 311 to provide rolling support for the guide cylinder 32, so as to facilitate the good rotation of the guide cylinder 32.

[0069] This patent also has the following problems: the guide cylinder 32 is prone to move in position when rotating in the horizontal direction;

[0070] The guide cylinder 32 is provided with a plurality of annular grooves 9 in a straight line shape;

[0071] The heating rings 311 can be inserted and abutted against the annular grooves 9. The guide cylinders 32 can be modular, which is convenient for the connection between the annular grooves 9 and the heating rings 311. The heating rings 311 limit the guide cylinders 32 through the annular grooves 9. The guide cylinders 32 can only drive the annular grooves 9 to rotate along the heating rings 311 and cannot detach from the heating rings 311 to the left or right, thereby ensuring the stability of the guide cylinders 32 during rotation.

[0072] like Figure 1 As shown, Figure 1 : is a stereogram of a preferred embodiment of the present invention; Figure 6 As shown, Figure 6 : is a front view of the filter screen of a preferred embodiment of the present invention, as shown in Figure 1-6 As shown;

[0073] The patent also has the following problems: during the rotation of the guide cylinder 32, metal powder is easily allowed to enter through the drying hole 33 and cause residue;

[0074] Each of the drying holes 33 is provided with a filter 5 through which metal powder cannot pass;

[0075] The filter screen 5 is in the shape of a semi-spherical shell;

[0076] The arched surface of the filter screen 5 faces the outside of the guide tube 32. Specifically, the filter screen 5 can block the trajectory of the metal powder entering the drying hole 33 without blocking the heat dissipation and dehumidification work. The arched surface of the filter screen 5 is not conducive to the residue when in contact with the metal powder, and makes it more convenient to remove the metal powder when it is dried and exhausted.

[0077] Optionally, one end of the filter screen 5 is provided with an external threaded barrel 6;

[0078] The wall of the drying hole 33 is configured as an internal thread shape;

[0079] The external threaded barrel 6 can be spirally connected to the drying hole 33. Specifically, the filter 5 can be quickly replaced by spirally disassembling and assembling the external threaded barrel 6 and the drying hole 33. The operation is flexible and firm, and the replacement and repair efficiency of the filter 5 when it is damaged is also improved.

[0080] Optionally, a glass cover plate 7 is provided at the opening of the heating chamber 2;

[0081] The glass cover plate 7 is heat-resistant glass. Specifically, the remaining state of the metal powder can be directly observed through the glass cover plate 7, so that the metal powder in the heating chamber 2 can be added in time.

[0082] Optionally, the drying hole 33 is expanded, and the expansion direction increases from the inside to the outside. Specifically, the shape of the drying hole 33 can make the air outlet and heat outlet trajectory diffuse, thereby expanding the range and angle of the dehumidification work to a certain extent.

[0083] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-directional dehumidification device for a 3D laser printer, comprising: A laser printer body (1), a heating chamber (2) arranged on the laser printer body (1), and a drying section (3) arranged on the heating chamber (2), characterized in that: The drying section (3) comprises two rows of heating sections (31) arranged on the heating chamber (2), two rows of guide cylinders (32) rotatably arranged outside the two rows of heating sections (31), and a plurality of drying holes (33) spirally arranged on each of the guide cylinders (32); The plurality of drying holes (33) on two adjacent guide cylinders (32) are arranged in parallel and staggered manner; The metal powder is stored in the heating chamber (2) and two rows of guide cylinders (32) are buried behind the heating chamber (2). When the two rows of the plurality of heating parts (31) heat the two rows of the plurality of guide cylinders (32), the heat can pass through the two rows of the plurality of guide cylinders (32) and the plurality of drying holes (33) to dry the metal powder at multiple angles; One of the guide cylinders (32) is connected to a drive motor; The multi-directional dehumidification device for a 3D laser printer further comprises a transmission part (4); The transmission part (4) comprises a plurality of slots (41) circumferentially arranged on the outer wall of each guide cylinder (32) and a toothed belt (42) engaging with the plurality of slots (41), wherein When the driving motor is driven, one of the guide cylinders (32) drives the toothed belt (42) to rotate via a plurality of the clamping grooves (41), so that the other plurality of guide cylinders (32) rotate in the same direction; The multi-directional dehumidification device for the 3D laser printer also includes a fan; The fan is connected to a plurality of guide cylinders (32) via a shunt pipe; The heating portion (31) comprises a plurality of heating rings (311) arranged in a straight line and inserted into each guide cylinder (32), and two connecting rods (312) arranged between every two heating rings (311); Two of the connecting rods (312) are connected to the laser printer body (1); A plurality of the heating rings (311) are capable of conducting heat to the guide tube (32), wherein The fan is driven so that wind can blow the guide cylinder (32) and the plurality of heating rings (311) through the shunt pipe, so that heat is accelerated to pass through the plurality of drying holes (33) to dry the metal powder; The guide cylinder (32) is provided with a plurality of annular grooves (9) in a straight line shape; A plurality of the heating rings (311) can be inserted and abutted against a plurality of the ring grooves (9); Each of the drying holes (33) is provided with a filter (5) through which metal powder cannot pass; The filter screen (5) is in the shape of a semi-spherical shell; The arched surface of the filter screen (5) faces the outside of the guide cylinder (32).

2. A multi-directional dehumidification device for a 3D laser printer as claimed in claim 1, characterized in that: An externally threaded cylinder (6) is provided at one end of the filter screen (5); The wall of the drying hole (33) is arranged in an internal thread shape; The externally threaded barrel (6) can be screwed to the drying hole (33).

3. A multi-directional dehumidification device for a 3D laser printer as claimed in claim 2, characterized in that: A glass cover plate (7) is provided at the opening of the heating chamber (2); The glass cover plate (7) is heat-resistant glass.

4. A multi-directional dehumidification device for a 3D laser printer as claimed in claim 3, characterized in that: The drying hole (33) is arranged to be expanded, and the expansion direction increases from the inside to the outside.

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