CN213002639U

CN213002639U - Metal vibration material disk powder bed preheating device

Info

Publication number: CN213002639U
Application number: CN202020378797.XU
Authority: CN
Inventors: 张觉灵; 刘博�; 张华�; 赵景飞
Original assignee: Hebei Jingye Additive Material Manufacturing Technology Co ltd
Current assignee: Hebei Jingye Additive Material Manufacturing Technology Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-04-20
Anticipated expiration: 2030-03-23

Abstract

The utility model relates to the technical field of metal additive manufacturing, in particular to a preheating device of a metal additive manufacturing powder bed, which solves the defect of poor preheating effect of the existing metal additive manufacturing material, and comprises a device shell, wherein the bottom of the device shell is fixed with a bracket through a bolt, the inner side of the bottom of the bracket is fixed with a shaking motor through a bolt, the inside of the bracket is connected with three guide rods which are arranged in parallel through a bearing, three pull rods are evenly distributed and inserted in the device shell, the top of each pull rod is fixed with a preheating bed plate through a bolt, the shaking motor drives the guide rods to rotate, one side of each pull rod which is pulled by a sleeved half gear is provided with a pull rod which is meshed with a tooth socket, the pull rod is pulled downwards to compress a reset spring, when the half gear rotates and is separated from the tooth socket of the pull rod, the pull rod is reset under the action of the reset spring, the preheating bed plate can realize the shaking function by the reciprocating movement, so that the additive powder is uniformly heated.

Description

Metal vibration material disk powder bed preheating device

Technical Field

The utility model relates to a metal vibration material disk technical field especially relates to a metal vibration material disk powder bed preheating device.

Background

Metal additive manufacturing is a method for directly forming metal parts, and is the latest development of rapid forming technology. The technology is based on the most basic idea of rapid forming, namely an incremental manufacturing mode of layer-by-layer cladding, parts with specific geometric shapes are directly formed according to a three-dimensional CAD model, and metal powder is completely melted in the forming process to generate metallurgical bonding. The metal parts with complex shapes and structures, which can not be manufactured by the traditional machining means, are one of the main directions for applying the laser rapid prototyping technology.

In the metal additive manufacturing process, residual stress is usually generated due to an uneven temperature field, and a common stress removing method is to perform subsequent heat treatment on a processed formed part, so that the part undergoes a process of cooling and then heating. However, during the cooling process, stress release may occur inside the parts, which may cause deformation, warpage, even cracking, etc. of the machined components, increasing the risk of producing inferior products and waste products. Most importantly, the conditions of deformation, warpage and even cracking and the like often appear in the part forming process, and the method cannot fundamentally solve the problems due to the lack of internal stress control in the forming process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defect of poor preheating effect of the existing metal additive manufacturing material, and providing a preheating device of a metal additive manufacturing powder bed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a metal vibration material disk powder bed preheating device, includes the device casing, the bottom of device casing has the support through the bolt fastening, the bottom inboard of support has the shake motor through the bolt fastening, and the inside of support still is connected with three parallel arrangement's guide arm through the bearing, and the inside evenly distributed interlude of device casing has three pull rods, the top of pull rod has the preheating bed board through the bolt fastening, the inside of preheating the bed board evenly nests has the preheating tube, and the outside cover of pull rod is equipped with reset spring, the guide arm is located pull rod one side and corresponds the department and cup jointed the semi-gear.

Preferably, the two ends of the device shell are both fixed with connecting lugs through bolts.

Preferably, one end of the return spring is in contact with the bottom of the preheating bed plate, and the bottom of the return spring is in contact with the top of the device shell.

Preferably, the material of the preheating pipe is copper, and two hoses are respectively connected to the end parts of the preheating pipe.

Preferably, gear teeth are arranged on the surface of one side of the half gear, and a tooth socket meshed with the gear teeth is formed in one side of the bottom of the pull rod.

Preferably, the transmission belt wheel is sleeved on the outer sides of the output shaft of the shaking motor and one end of the guide rod, and the transmission belt is wound on the outer side of the transmission belt wheel.

The utility model has the advantages that:

1. the preheating tube made of copper is uniformly filled in the preheating bed plate, hot oil is injected into the preheating tube through a hose, and the preheating tube is used for preheating metal additive manufacturing powder on the surface of the preheating bed plate.

2. The guide rod is driven to rotate by the shaking motor, the pull rod which is provided with a tooth groove meshed with the guide rod is arranged on one side of the guide rod which is pulled by the sleeved half gear to be pulled downwards, the pull rod is enabled to be reset under the action of the reset spring after the half gear is rotated and separated from the tooth groove of the pull rod after being compressed by the reset spring, and therefore the shaking function of the preheating bed plate is achieved by the reciprocating movement of the pull rod under the action of the reset spring, and additive powder is enabled to be heated uniformly.

Drawings

Fig. 1 is a schematic structural view of a preheating device for a metal additive manufacturing powder bed provided by the present invention;

fig. 2 is a schematic view of a vertical cross-sectional structure of a preheating device for a metal additive manufacturing powder bed provided by the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a schematic view of a part of the enlarged structure at B in fig. 2.

In the figure: the device comprises a device shell 1, a bracket 2, a preheating bed plate 3, a pull rod 4, a preheating pipe 5, a connecting lug 6, a hose 7, a shaking motor 8, a guide rod 9, a half gear 10, a transmission belt 11 and a return spring 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a preheating device for a metal additive manufacturing powder bed comprises a device shell 1, wherein a support 2 is fixed at the bottom of the device shell 1 through bolts, a shaking motor 8 is fixed at the inner side of the bottom of the support 2 through bolts, three guide rods 9 which are arranged in parallel are connected inside the support 2 through bearings, three pull rods 4 are uniformly distributed and inserted into the device shell 1, a preheating bed plate 3 is fixed at the top of each pull rod 4 through bolts, a preheating pipe 5 is uniformly nested inside the preheating bed plate 3, a return spring 12 is sleeved outside each pull rod 4, and a half gear 10 is sleeved at a corresponding position of one side of each guide rod 9, which is located on the pull rod 4;

device casing 1's both ends all are fixed with connection lug 6 through the bolt, reset spring 12's one end and the bottom contact of preheating bed board 3, reset spring 12's bottom and device casing 1's top contact, the material of preheating tube 5 is copper, and preheating tube 5's tip is connected with two hoses 7 respectively, a side surface of semi-gear 10 is provided with the teeth of a cogwheel, bottom one side of pull rod 4 is seted up with the tooth's socket of teeth of a cogwheel meshing, the driving pulley has all been cup jointed in the output shaft of jitter motor 8 and the one end outside of guide arm 9, the outside of driving pulley is around being equipped with drive belt 11.

In this embodiment, the preheating pipe 5 made of copper is uniformly filled in the preheating bed plate 3, hot oil is injected into the preheating pipe 7 through the hose, and the preheating pipe 5 is used to preheat the metal additive manufacturing powder on the surface of the preheating bed plate 3.

The shaking motor 8 is installed at the bottom of the device shell 1 through the support 2, three pull rods 4 are inserted into the device shell 1, the preheated bed plate 3 is fixed at the tops of the pull rods 4 through bolts, a return spring 12 is sleeved on the outer side of each pull rod 4 between the preheated bed plate 3 and the device shell 1, three guide rods 9 are arranged in the support 2 in parallel, the shaking motor 8 is used for driving the guide rods 9 to rotate, one side of each guide rod is pulled by a sleeved half gear 10 to be provided with the pull rod 4 which is meshed with a tooth groove, the pull rod is pulled downwards to compress the return spring 12, and when the half gear 10 rotates and is separated from the tooth groove of the pull rod 4, the pull rod is reset under the action of the return spring 12 after losing the force from the half gear 10, so that the shaking function of the preheated bed plate 3 is realized in a reciprocating mode, and additive.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a metal vibration material disk powder bed preheating device, includes device casing (1), its characterized in that, there is support (2) bottom of device casing (1) through the bolt fastening, the bottom inboard of support (2) has jitter motor (8) through the bolt fastening, and the inside of support (2) still is connected with guide arm (9) of three parallel arrangement through the bearing, and the inside evenly distributed of device casing (1) alternates there are three pull rods (4), the top of pull rod (4) has preheating bed board (3) through the bolt fastening, the inside of preheating bed board (3) evenly has nested preheating tube (5), and the outside cover of pull rod (4) is equipped with reset spring (12), half gear (10) have been cup jointed in the department of corresponding to guide arm (9) one side of pull rod (4).

2. A metal additive manufacturing powder bed preheating device according to claim 1, characterized in that connection tabs (6) are fixed to both ends of the device housing (1) by bolts.

3. A metal additive manufacturing powder bed preheating device according to claim 1, characterized in that one end of the return spring (12) is in contact with the bottom of the preheating bed plate (3), and the bottom of the return spring (12) is in contact with the top of the device housing (1).

4. A metal additive manufacturing powder bed preheating device according to claim 1, characterized in that the material of the preheating tube (5) is copper, and two hoses (7) are connected to the ends of the preheating tube (5), respectively.

5. The preheating device for the metal additive manufacturing powder bed according to claim 1, wherein gear teeth are arranged on one side surface of the half gear (10), and a tooth groove meshed with the gear teeth is formed on one side of the bottom of the pull rod (4).

6. The preheating device for the metal additive manufacturing powder bed according to claim 1, wherein a driving belt wheel is sleeved on the outer side of each of the output shaft of the shaking motor (8) and one end of the guide rod (9), and a driving belt (11) is wound on the outer side of the driving belt wheel.