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CN-224222744-U - Powder bed preheating device for metal additive manufacturing

CN224222744UCN 224222744 UCN224222744 UCN 224222744UCN-224222744-U

Abstract

The utility model discloses a powder bed preheating device for metal additive manufacturing, which comprises a bottom plate and limit strips arranged on the left side and the right side of the outer wall of the upper end of the bottom plate, wherein a heat conducting plate is arranged between the inner wall of the upper end of the bottom plate and the inner wall of the limit strips, a plurality of resistors are fixedly connected to the outer wall of the lower end of the heat conducting plate and the outer wall of the left end and the right end of the heat conducting plate, one ends of the plurality of resistors are provided with power wires so as to provide power for the resistors and enable the resistors to generate heat, the outer wall of the lower end of the heat conducting plate is fixedly connected with a heating pipe, the outer wall of the lower end of the heating pipe is fixedly connected with a plurality of guiding pipes so as to guide the circulation of media, and when power failure occurs, hot water or hot air can be input into the heating pipe of a guiding pipe network through the installation of the guiding pipe, so that the temperature of a powder bed can be maintained, the powder is prevented from being too fast solidified, and the part manufacturing process can be continued until proper countermeasures are adopted.

Inventors

  • HUANG LEI
  • Yao Pinzhi
  • HUANG JIE
  • HE CHANGSHENG

Assignees

  • 苏州博创熠鑫智造科技有限责任公司

Dates

Publication Date
20260512
Application Date
20250610

Claims (8)

  1. 1. A powder bed preheating device for metal additive manufacturing comprises a bottom plate (1) and limit strips (2) arranged on the left side and the right side of the outer wall of the upper end of the bottom plate (1); A heat conducting plate (6) is arranged between the inner wall of the upper end of the bottom plate (1) and the inner wall of the limit strip (2); the outer walls of the lower end and the left end and the right end of the heat conducting plate (6) are fixedly connected with a plurality of resistors (7); One end of each resistor (7) is provided with a power line (9) so as to provide power for the resistor (7) and enable the resistor (7) to generate heat; the heat conducting plate is characterized in that the outer wall of the lower end of the heat conducting plate (6) is fixedly connected with a heating pipe (12), and the outer wall of the lower end of the heating pipe (12) is fixedly connected with a plurality of guide pipes (10) for guiding medium circulation.
  2. 2. A metal additive manufacturing powder bed preheating device according to claim 1, wherein heat conducting pipes (11) are fixedly connected between the outer walls of the lower ends of the plurality of guide pipes (10) so as to guide excessive heat to the inside.
  3. 3. A metal additive manufacturing powder bed preheating device as set forth in claim 2, wherein the heat conducting pipe (11) is provided with an inlet (16) at its head end for guiding a medium into the interior of the heat conducting pipe (11), and an outlet at its tail end for guiding the medium to be discharged.
  4. 4. The powder bed preheating device for metal additive manufacturing according to claim 1, wherein the right circular outer walls of the guide pipes (10) are provided with adjusting knobs (17), and the inner parts of the guide pipes (10) are provided with valve cores (15).
  5. 5. The powder bed preheating device for metal additive manufacturing according to claim 1, wherein the outer wall of the front end of the bottom plate (1) is fixedly connected with a controller (3).
  6. 6. The powder bed preheating device for metal additive manufacturing according to claim 1, wherein the front end outer wall of the bottom plate (1) is internally provided with a through hole (4) which is communicated with the front end outer wall and the rear end outer wall so as to enable a power line (9) to penetrate out, and a plurality of hubs (5) are arranged in the bottom plate (1) so as to guide the trend and the position of a plurality of lines.
  7. 7. The powder bed preheating device for metal additive manufacturing according to claim 1, wherein the outer walls of the lower ends of the plurality of resistors (7) are fixedly connected with fixing rods (8) so as to limit the positions of the resistors (7) and the power lines (9).
  8. 8. The powder bed preheating device for metal additive manufacturing according to claim 1, wherein one ends of the bottom plate (1) and the limiting strips (2) are fixedly connected with heat preservation layers (13), and one sides of a plurality of the heat preservation layers (13) are provided with heat insulation shells (14).

Description

Powder bed preheating device for metal additive manufacturing Technical Field The utility model belongs to the technical field of powder bed heating, and particularly relates to a powder bed preheating device for metal additive manufacturing. Background The metal additive manufacturing powder bed preheating device is a vital equipment component in the metal additive manufacturing process, and aims to preheat a metal powder bed for additive manufacturing, thereby creating favorable conditions for manufacturing high-quality metal parts. However, when the power failure occurs, part of the powder still cannot be heated completely, and the heating progress is interrupted, so that the production efficiency is reduced. Disclosure of utility model The utility model aims to provide a preheating device for a powder bed in metal additive manufacturing, which is used for solving the problem that partial powder still cannot be completely heated when power failure occurs in the background art. In order to achieve the aim, the utility model provides the technical scheme that the preheating device of the powder bed for metal additive manufacturing comprises a bottom plate and limit strips arranged on the left side and the right side of the outer wall of the upper end of the bottom plate; A heat conducting plate is arranged between the inner wall of the upper end of the bottom plate and the inner wall of the limit strip; The outer walls of the lower end and the left end and the right end of the heat conducting plate are fixedly connected with a plurality of resistors; One end of each of the resistors is provided with a power line so as to provide power for the resistor and heat the resistor; The outer wall of the lower end of the heat conducting plate is fixedly connected with a heating pipe, and the outer wall of the lower end of the heating pipe is fixedly connected with a plurality of guiding pipes so as to guide medium circulation. Preferably, heat pipes are fixedly connected between the outer walls of the lower ends of the guide pipes so as to guide redundant heat to the inside. Preferably, an inlet is provided at the head end of the heat conduction pipe to guide the medium into the heat conduction pipe, and an outlet is provided at the tail end of the heat conduction pipe to guide the medium to be discharged. Preferably, the round outer walls of the right ends of the guide pipes are provided with adjusting knobs, and the inner parts of the guide pipes are provided with valve cores. Preferably, the outer wall of the front end of the bottom plate is fixedly connected with a controller. Preferably, a through hole penetrating from front to back is formed in the outer wall of the front end of the bottom plate so as to enable the power supply wire to penetrate out, and a plurality of hubs are arranged in the bottom plate so as to guide the trend and the position of a plurality of lines. Preferably, the outer walls of the lower ends of the resistors are fixedly connected with fixing rods so as to limit the positions of the resistors and the power lines. Preferably, the bottom plate and one end of the limiting strip are fixedly connected with heat insulation layers, and one sides of the heat insulation layers are provided with heat insulation shells. Compared with the prior art, the utility model provides a preheating device for a metal additive manufacturing powder bed, which has the following beneficial effects: 1. Through installation guide pipe and heating pipe, when appearing cutting off the power supply, the inside hot water or the steam of input of accessible guide pipe network heating pipe can maintain the temperature of powder bed, prevents that the powder from solidifying too fast, and guarantee part manufacturing process can go on until taking more proper countermeasure, and hot fluid can be with the lower region of temperature with heat transfer simultaneously, perhaps absorbs the unnecessary heat in the higher region of temperature, plays the effect of supplementary regulation powder bed temperature homogeneity. 2. Through installing the heat pipe, take preheating device normally to heat the powder bed, the inside heat of accessible guide pipe with the bottom plate outwards guide to transfer to among the inside circulation gas of heat pipe or the liquid, realized the recycle to the bottom plate waste heat, provide heat energy for other auxiliary systems of equipment, thereby reduced extra energy consumption, improved the energy utilization efficiency of whole preheating device even material increase manufacturing system. Drawings FIG. 1 is a schematic diagram of a preheating device for a powder bed for metal additive manufacturing according to the present utility model. Fig. 2 is a schematic view of a partial structure of a side view of a floor area of the present utility model. Fig. 3 is a schematic sectional elevation view of a partial structure of a floor area according to the present utility model. Fig. 4 is