CN211866602U

CN211866602U - Auxiliary device in metal additive manufacturing process

Info

Publication number: CN211866602U
Application number: CN202020535837.7U
Authority: CN
Inventors: 关宁; 袁晓静; 陈小虎; 王旭平
Original assignee: Rocket Force University of Engineering of PLA
Current assignee: Rocket Force University of Engineering of PLA
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-11-06
Anticipated expiration: 2030-04-13

Abstract

The utility model belongs to an auxiliary device in metal vibration material disk manufacturing process, the power distribution box comprises a box body, the case lid upside is equipped with the gas outlet, the case lid be equipped with feed inlet assorted feed mechanism, the box inner wall is equipped with temperature sensor, the pivot is equipped with helical blade, the pivot downside runs through the box and is equipped with drive mechanism, the inner chamber coils there is the heating wire, the bottom half is by keeping away from first discharge gate one side direction to being close to first discharge gate one side direction by high low slope, first discharging channel is equipped with first solenoid valve, the inner wall is equipped with pressure sensor under the metering box, the metering box bottom is close to second discharge gate one side direction by keeping away from second discharge gate side direction by high to low slope, second discharging channel is equipped with the second solenoid valve, this device simple structure, the staff of being convenient for heats and is dry the powder, and the staff of being convenient.

Description

Auxiliary device in metal additive manufacturing process

Technical Field

The utility model belongs to the technical field of metal vibration material disk makes, concretely relates to auxiliary device in metal vibration material disk manufacturing process.

Background

Selective laser melting as a metal additive manufacturing (3D printing) technique is to selectively heat and melt a single layer of powder using a laser beam as a heat source to bond powder particles within and between the single layer and finally rapidly form a three-dimensional entity of any shape. Powder laying and powder feeding are important links in the SLM process, and a powder laying device is placed in a vacuum or inert gas filled sealed box body; when each layer of powder is laid, the laser or the electron beam scans according to a pre-planned path, melts the layer of powder and fuses with the previous layer of metal; the layers are stacked until the required parts are manufactured. In the process of transporting or storing the powder, a certain amount of moisture is attached to the surface more or less, so that the powder laying link in the printing process is adversely affected, and the forming effect is further deteriorated, so that the powder needs to be dried, and in order to reduce the defects such as cracks caused by thermal stress generated by temperature gradient, the forming base plate needs to be preheated usually, so that the temperature gradient near the base plate is reduced. However, as the forming height increases, in the powder laying process, the temperature of the new layer of powder is lower than that of the solidified powder of the previous layer, so that the temperature gradient exists continuously, the tendency of cracks of a formed part is increased, and meanwhile, the powder feeding amount is not convenient to control, so that the excessive or insufficient powder feeding is caused, the working effect is directly influenced by the insufficient powder feeding, the excessive powder feeding causes the redundant powder to be recycled for multiple times, the workload of workers is increased, and the quality of the powder can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the auxiliary device is convenient for heating and drying the powder and is convenient for workers to control the powder feeding amount.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

an auxiliary device in a metal additive manufacturing process comprises a box body, wherein the box body is assembled with an external power supply line, a support frame is arranged on the lower side of the box body, a box cover is arranged on the upper side of the box body, an air outlet is arranged on the upper side of the box cover, a feed inlet is arranged on the box cover, a feed mechanism matched with the feed inlet is assembled on the box cover, a temperature sensor is assembled on the inner wall of the box body, a rotating shaft is assembled on the box body, a spiral blade is assembled on the rotating shaft, a transmission mechanism penetrates through the lower side of the rotating shaft and is assembled on the lower side of the box body, an inner cavity is formed in the box body, a heating wire is coiled in the inner cavity, a first discharge hole is formed in the lower side of the box body, the bottom of the box body inclines from high to low from one, the utility model discloses a pressure sensor's measuring box, including first discharge gate, metering box, pressure sensor, metering box bottom, first discharge gate, second discharge gate, first discharge gate other end is equipped with the batch meter, inside first discharge gate one end stretched into the batch meter, the wall equips with pressure sensor on the batch meter downside, the pressure sensor upside is equipped with the measurement box, the measurement box is located first discharge gate downside, the measurement box downside is equipped with the second discharge gate, measurement box bottom is close to second discharge gate one side direction by keeping away from second discharge gate side direction and inclines to low by high, the batch meter is equipped with second discharge gate assorted second discharging channel, second discharging channel is equipped with the second solenoid valve, the batch meter downside is equipped with the support with support frame fixed connection, the box outside is equipped with control panel, The power input ends of the pressure sensor, the first electromagnetic valve and the second electromagnetic valve are electrically connected, and the signal output ends of the temperature sensor and the pressure sensor are in signal connection with the signal input end of the control panel.

Adopt the utility model discloses technical scheme, the staff can put into the box with the powder through feed mechanism, supply power for the heating wire through control panel, make the heating wire work begin to heat, heat the powder inside the box, temperature sensor detects the powder temperature inside the box in real time, when temperature sensor and real-time temperature signal that will detect send control panel to, when control panel detects the dust inside the box through temperature sensor and reaches suitable temperature, control panel stops to supply power to the heating wire, make the heating wire stop working, when control panel detects the dust temperature inside the box through temperature sensor and is lower, control panel supplies power for the heating wire, make the heating wire begin to heat work to the powder, thereby reach the heating and drying effect to the powder; in the process of heating the powder, the generated hot gas is discharged outwards through the gas outlet; the transmission mechanism drives the rotating shaft to rotate, the rotating shaft drives the spiral blade to rotate, the powder accumulated on the lower side of the box body is continuously turned upwards, the effect of turning the powder is achieved, and the powder is better in drying and heating effects due to the cooperation of the powder and the electric heating wire; when powder is required to be discharged, the total weight of the powder required to be discharged is set on the control panel as required, then the control panel supplies power to the first electromagnetic valve to enable the first electromagnetic valve to be in an open state, the powder in the box body flows to the first discharge port through the inclined plane at the bottom of the box body and enters the metering box through the first discharge channel so as to enter the metering box, the pressure sensor measures the powder loaded in the metering box in real time and transmits a weight detection signal to the control panel in real time, when the control panel detects that the weight of the powder in the metering box reaches a set value through the pressure sensor, the control panel stops supplying power to the first electromagnetic valve, the powder in the box body cannot enter the metering box, at the moment, the control panel supplies power to the second electromagnetic valve, the second electromagnetic valve is opened to enable the powder in the metering box to be matched with the second discharge channel through the inclined, the powder can be discharged out of the metering box to achieve the purpose of discharging the powder; this device simple structure, the staff of being convenient for heats and the drying to the powder, and the staff of being convenient for roughly carries out the accuse to the play powder volume.

Further limit, one side of the support frame, which is far away from the metering box, is provided with a step. The structure is convenient for workers to feed.

Further defined, the feed mechanism includes: feeder hopper, baffle and pulling handle, the feeder hopper be with the feed inlet upside, the feed inlet be equipped with baffle assorted sliding tray, the baffle assembly in the sliding tray, and with the feed inlet phase-match, baffle and pulling handle fixed connection. When the feeding is needed, the sliding baffle plate leaks out of the feeding hole by using the pulling handle, the feeding can be carried out at the moment, and after the feeding is finished, the feeding hole is closed by the sliding baffle plate. By the structure, the box cover does not need to be opened every time feeding is carried out, so that time and labor are saved.

Further defined, the transmission mechanism includes: from driving wheel, belt, action wheel and motor, from driving wheel and pivot fixed connection, the belt left and right sides respectively with from driving wheel and action wheel assembly, the action wheel is connected with motor drive, fixed connection can be dismantled with the support frame to the motor. The motor work drives the action wheel rotatory, and the action wheel passes through the belt and drives from the driving wheel rotation to it is rotatory to drive the pivot, and such structure, reasonable in design, it is effectual to the transmission of pivot.

Further limit, the first discharging channel is provided with an inclined plate on one side close to the metering box. By adopting the structure, the powder can more conveniently enter the metering box.

Further inject, the first discharge gate left and right sides all is equipped with first oblique baffle, the second discharge gate left and right sides all is equipped with the oblique baffle of second. Such structure prevents that the dust from piling up the first discharge gate and the second discharge gate left and right sides.

The utility model discloses have following advantage with prior art relative ratio:

1. simple structure, the staff of being convenient for carries out heat treatment to the powder, prevents that the powder temperature of new layer from being less than the powder temperature that the last layer solidifies, increases the tendency that the forming piece produced the crackle.

2. When the powder is heated, the powder is dried, so that the adverse effect of moisture in the powder on a powder laying link in the printing process is prevented, and the forming effect is further deteriorated.

3. The staff of being convenient for roughly carries out the accuse to sending the powder volume, prevents to go out powder too much or too little, send powder too little can directly influence the working effect, and send powder too much, can lead to unnecessary powder to be recycled many times, increases staff's work burden, still can cause the influence to the quality of powder.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a schematic structural diagram of an embodiment of an auxiliary device in a metal additive manufacturing process according to the present invention;

fig. 2 is a schematic view of a cross-sectional structure of a box, a rotating shaft, a spiral blade, a driven wheel and a heating wire according to an embodiment of the auxiliary device in the metal additive manufacturing process of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of a box body and a feeding mechanism of an embodiment of an auxiliary device in a metal additive manufacturing process according to the present invention;

fig. 4 is a schematic view of a cross-sectional structure of a second discharging channel, an inclined plate, a measuring box, a pressure sensor, a measuring box and a bracket of an auxiliary device in the metal additive manufacturing process of the present invention;

fig. 5 is a schematic view of a cross-sectional structure of a box body, a first inclined baffle, a first discharge hole and a metering box according to an embodiment of the auxiliary device in the metal additive manufacturing process of the present invention;

the main element symbols are as follows:

the device comprises a box body 1, a support frame 10, a box cover 101, a feed inlet 1011, an air outlet 102, a step 103, a temperature sensor 11, a rotating shaft 111, a spiral blade 12, an inner cavity 13, a heating wire 14, a first discharge hole 15, a first discharge channel 151, an inclined plate 152, a first inclined baffle 153, a first electromagnetic valve 16, a metering box 2, a pressure sensor 21, a metering box 22, a second discharge hole 23, a second inclined baffle 231, a second discharge channel 24, a second electromagnetic valve 241, a support 25, a control panel 26, a feed hopper 3, a baffle 31, a pulling handle 32, a sliding groove 33, a belt 41, a driving wheel 42 and a motor 43.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in FIGS. 1-5, the utility model relates to an auxiliary device in metal additive manufacturing process, comprising a box body 1, the box body 1 is equipped with an external power line, the lower side of the box body 1 is equipped with a support frame 10, the upper side of the box body 1 is equipped with a box cover 101, the upper side of the box cover 101 is equipped with an air outlet 102, the box cover 101 is equipped with a feed inlet 1011, the box cover 101 is equipped with a feed mechanism matching with the feed inlet 1011, the inner wall of the box body 1 is equipped with a temperature sensor 11, the box body 1 is equipped with a rotating shaft 111, the rotating shaft 111 is equipped with a spiral blade 12, the lower side of the rotating shaft 111 is equipped with a transmission mechanism penetrating through the box body 1, the box body 1 is equipped with an inner cavity 13, the inner cavity 13 is coiled with a heating wire 14, the lower side of the box body 1 is equipped with a first discharge port, the first discharge passage 151 is equipped with a first electromagnetic valve 16, the other end of the first discharge port 15 is equipped with a metering box 2, one end of the first discharge port 15 extends into the metering box 2, the inner wall of the lower side of the metering box 2 is equipped with a pressure sensor 21, the upper side of the pressure sensor 21 is equipped with a metering box 22, the metering box 22 is positioned at the lower side of the first discharge port 15, the lower side of the metering box 22 is provided with a second discharge port 23, the bottom of the metering box 22 inclines from one side far away from the second discharge port 23 to one side close to the second discharge port 23 from high to low, the metering box 2 is equipped with a second discharge passage 24 matched with the second discharge port 23, the second discharge passage 24 is equipped with a second electromagnetic valve 241, the lower side of the metering box 2 is equipped with a bracket 25 fixedly connected with the support frame 10, the outer side of the box, the power output end of the control panel 26 is electrically connected with the power input ends of the temperature sensor 11, the heating wire 14, the pressure sensor 21, the first electromagnetic valve 16 and the second electromagnetic valve 241, and the signal output ends of the temperature sensor 11 and the pressure sensor 21 are in signal connection with the signal input end of the control panel 26.

By adopting the technical proposal of the utility model, the worker can put the powder into the box body 1 through the feeding mechanism, the heating wire 14 is supplied with power through the control panel 26, so that the heating wire 14 is operated to start heating, the powder in the box body 1 is heated, the temperature sensor 11 detects the temperature of the powder in the box body 1 in real time, when the temperature sensor 11 transmits the detected temperature signal to the control panel 26 in real time, and when the control panel 26 detects that the dust in the box body 1 reaches a proper temperature through the temperature sensor 11, the control panel 26 stops supplying power to the heating wire 14 to stop the operation of the heating wire 14, when the control panel 26 detects that the temperature of the dust inside the cabinet 1 is low through the temperature sensor 11, the control panel 26 supplies power to the heating wires 14, so that the heating wires 14 start to heat the powder, and the powder is heated and dried; during the powder heating process, the generated hot gas is discharged outwards through the gas outlet 102; the transmission mechanism drives the rotating shaft 111 to rotate, the rotating shaft 111 drives the spiral blade 12 to rotate, the powder accumulated on the lower side of the box body 1 is continuously turned upwards, the effect of turning the powder is achieved, and the powder is better in drying and heating effects due to the fact that the powder is matched with the electric heating wire 14; when powder discharging is needed, the total weight of the powder to be discharged is set on the control panel 26 as required, then the control panel 216 supplies power to the first electromagnetic valve 16, so that the first electromagnetic valve 16 is in an open state, the powder in the box 1 flows to the first discharge port 15 through the inclined surface at the bottom of the box 1 and enters the metering box 2 through the first discharge channel 151, and then enters the metering box 22, the pressure sensor 21 measures the powder loaded in the metering box 22 in real time, and transmits a weight detection signal to the control panel 26 in real time, when the control panel 26 detects that the weight of the powder in the metering box 22 reaches a set value through the pressure sensor 11, the control panel 26 stops supplying power to the first electromagnetic valve 241, the powder in the box 1 cannot enter the metering box 22, at this time, the control panel 26 supplies power to the second electromagnetic valve 241, and the second electromagnetic valve 241 is opened, the powder in the measuring box 22 passes through the inclined plane at the bottom of the measuring box 22 and is matched with the second discharging channel 24, so that the powder can be discharged out of the measuring box 22 to achieve the purpose of discharging the powder; this device simple structure, the staff of being convenient for heats and the drying to the powder, and the staff of being convenient for roughly carries out the accuse to the play powder volume.

Preferably, the support frame 10 is provided with a step 103 on the side away from the measuring box 22. The structure is convenient for workers to feed. In fact, other structures can be considered according to specific situations, so that feeding is convenient for workers.

Preferably, the feeding mechanism comprises: feed hopper 3, baffle 31 and pulling handle 32, feed hopper 3 for with feed inlet 1011 upside, feed inlet 1011 is equipped with the sliding tray 33 with baffle 31 assorted, baffle 31 assembles in sliding tray 33, and with feed inlet 1011 assorted, baffle 31 and pulling handle 32 fixed connection. When feeding is needed, the sliding baffle 31 is pulled by the pulling handle 32 to leak out of the feeding hole 1011, feeding can be carried out at the moment, and after the feeding is finished, the sliding baffle 31 closes the feeding hole 1011. With the structure, the box cover 101 does not need to be opened every time feeding is carried out, so that time and labor are saved. In fact, other structures can be considered according to specific situations, so that the box cover 101 needs to be opened when the material is not fed every time, and the workload of workers is reduced.

The preferred drive mechanism includes: driven wheel 4, belt 41, action wheel 42 and motor 43, driven wheel 4 and pivot 111 fixed connection, belt 41 left and right sides respectively with driven wheel 4 and action wheel 42 assembly, action wheel 42 is connected with the transmission of motor 43, motor 43 and support frame 10 can dismantle fixed connection. The motor 43 works to drive the driving wheel 42 to rotate, the driving wheel 42 drives the driven wheel to rotate through the belt 41, and therefore the rotating shaft 111 is driven to rotate. In fact, other structures can be considered according to specific conditions, the design is reasonable, and the transmission effect on the rotating shaft 111 is good.

Preferably, the first outlet channel 151 is provided with an inclined plate 152 on the side adjacent to the metering box 22. This configuration provides for more convenient entry of powder into the metering box 22. In fact, other configurations are contemplated as the case may be to facilitate the introduction of powder into the metering box 22.

Preferably, the left and right sides of the first discharge hole 15 are provided with first inclined baffles 153, and the left and right sides of the second discharge hole 23 are provided with second inclined baffles 231. With such a structure, dust is prevented from accumulating on the left and right sides of the first discharge port 15 and the second discharge port 23. In fact, other structures can be considered according to specific situations to prevent dust from accumulating on the left and right sides of the first discharge hole 15 and the second discharge hole 23.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an auxiliary device in metal vibration material disk manufacturing process, includes box (1), box (1) is equipped with external power supply line, box (1) downside is equipped with support frame (10), box (1) upside is equipped with case lid (101), its characterized in that: the utility model discloses a box, including case lid (101), case lid (101) upside is equipped with gas outlet (102), case lid (101) is equipped with feed inlet (1011), case lid (101) be equipped with feed inlet (1011) assorted feed mechanism, box (1) inner wall is equipped with temperature sensor (11), box (1) is equipped with pivot (111), pivot (111) are equipped with spiral blade (12), pivot (111) downside runs through box (1) and is equipped with drive mechanism, box (1) is equipped with inner chamber (13), inner chamber (13) coil has heating wire (14), box (1) downside is equipped with first discharge gate (15), box (1) bottom is by keeping away from first discharge gate (15) one side to being close to first discharge gate (15) one side direction by high to low slope, box (1) fixedly connected with first discharge gate (15) assorted first discharging channel (151), the first discharge passage (151) is provided with a first electromagnetic valve (16), the other end of the first discharge hole (15) is provided with a metering box (2), one end of the first discharge hole (15) extends into the metering box (2), the inner wall of the lower side of the metering box (2) is provided with a pressure sensor (21), the upper side of the pressure sensor (21) is provided with a metering box (22), the metering box (22) is positioned at the lower side of the first discharge hole (15), the lower side of the metering box (22) is provided with a second discharge hole (23), the bottom of the metering box (22) inclines from high to low from one side far away from the second discharge hole (23) to one side close to the second discharge hole (23), the metering box (2) is provided with a second discharge passage (24) matched with the second discharge hole (23), and the second discharge passage (24) is provided with a second electromagnetic valve (241), batch meter (2) downside is equipped with support (25) with support frame (10) fixed connection, the box (1) outside is equipped with control panel (26), external power source line power output end is connected with control panel (26) power input end electricity, control panel (26) power output end is connected with temperature sensor (11), heating wire (14), pressure sensor (21), the power input end electricity of first solenoid valve (16) and second solenoid valve (241), temperature sensor (11) and the signal output part of pressure sensor (21) and the signal input end signal connection of control panel (26).

2. The auxiliary device in the metal additive manufacturing process according to claim 1, wherein: and a step (103) is arranged on one side of the support frame (10) far away from the metering box (22).

3. The auxiliary device in the metal additive manufacturing process according to claim 1, wherein: the feed mechanism comprises: feeder hopper (3), baffle (31) and pulling handle (32), feeder hopper (3) be with feed inlet (1011) upside, feed inlet (1011) be equipped with baffle (31) assorted sliding tray (33), baffle (31) assembly in sliding tray (33), and with feed inlet (1011) phase-match, baffle (31) and pulling handle (32) fixed connection.

4. The auxiliary device in the metal additive manufacturing process according to claim 1, wherein: the transmission mechanism comprises: follow driving wheel (4), belt (41), action wheel (42) and motor (43), follow driving wheel (4) and pivot (111) fixed connection, the belt (41) left and right sides respectively with follow driving wheel (4) and action wheel (42) assembly, action wheel (42) are connected with motor (43) transmission, fixed connection can be dismantled with support frame (10) in motor (43).

5. The auxiliary device in the metal additive manufacturing process according to claim 1, wherein: an inclined plate (152) is arranged on one side, close to the metering box (22), of the first discharging channel (151).

6. The auxiliary device in the metal additive manufacturing process according to claim 1, wherein: first discharge gate (15) the left and right sides all is equipped with first oblique baffle (153), second discharge gate (23) the left and right sides all is equipped with second oblique baffle (231).