Disclosure of Invention
In view of the above, it is necessary to provide a linear powder quantitative feeding device and a method thereof, which have the characteristics of simple structure and controllable powder feeding breadth.
The invention provides a linear powder quantitative supply device which comprises a support, a powder paving platform arranged at the bottom of the support, and a powder storage container arranged at the top of the support and used for containing powder, wherein the linear powder quantitative supply device further comprises at least one powder supply unit, the powder supply unit comprises a powder supply container, a sliding door control unit and a controller, the powder supply container is communicated with the powder storage container in a on-off mode and is positioned between the powder storage container and the powder paving platform, the powder supply container is obliquely arranged relative to the powder paving platform, the powder supply container is provided with a strip-shaped powder outlet, the powder outlet corresponds to the powder paving platform, the sliding door control unit is used for controlling the powder outlet to be gradually opened or closed along one end of the powder outlet to the other end of the powder outlet so as to enable powder to fall into the powder paving platform through the powder outlet, and the controller is electrically connected with the sliding door control unit.
So set up, when the powder outlet is opened the in-process from one end to the other end of powder outlet gradually, the powder that the powder outlet that has been opened corresponds can spread under the action of gravity at shop's powder platform from the powder outlet that has been opened, forms banding shop's powder face, and when the powder outlet was opened completely, the powder in the powder supply container can spread completely and spread the shop's powder face in shop's powder platform formation target.
In one embodiment of the present invention, an inclination angle is provided between the powder supply container and the powder spreading platform, and the inclination angle ranges from 0 degrees or more to less than 90 degrees.
So set up, when the inclination angle is 0 degrees, the powder supply container and the shop's powder platform set up parallelly, and the length of the play powder mouth of powder supply container equals the length of target shop's powder face this moment. When the inclination angle is between 0 and 90 degrees, the powder supply container is obliquely arranged relative to the powder paving platform, and the length of the target powder paving surface is equal to the projection length of the powder outlet on the powder paving platform along the vertical powder falling direction, so that the length of the target powder pile can be adjusted by adjusting the inclination angle.
In one embodiment of the invention, the sliding door control unit comprises a flexible sliding door, guide wheels, a driving wheel and a rotary driver, wherein two sides of the flexible sliding door are connected in a head-to-tail closed mode through flexible ropes and the guide wheels, the driving wheel is connected with the rotary driver, the flexible sliding door can control the opening and closing of the powder outlet, and the rotary driver is electrically connected with the controller.
Through the forward rotation or the reverse rotation of the flexible sliding door and the rotary driver, the flexible sliding door can be driven to move along one end of the powder outlet towards the other end, and then the powder outlet is gradually opened or closed, so that the powder supply speed is controlled.
In one embodiment of the present invention, the powder supply unit further includes a flexible conduit that communicates the powder storage container and the powder supply container, and a pressure-type cutoff valve provided to the flexible conduit, the pressure-type cutoff valve being electrically connected to the controller.
So set up, the oppression formula stop valve can be through controller control, and the break-make between automatic control powder storage container and the confession powder container, and then can control the powder that fills into in the confession powder container, can promote the control to the confession powder precision. In addition, the arrangement of the flexible guide pipe can conveniently adjust the inclination angle of the powder supply container so as to change the length of the target powder paving surface.
In one embodiment of the invention, the powder supply unit further includes a stirrer disposed inside the powder storage container, the stirrer being electrically connected to the controller.
So arranged, the agitator slowly agitates within the powder storage container such that the powder within the powder storage container is in a fluid state so as to flow into the flexible conduit under the force of gravity.
In one embodiment of the invention, the powder supply unit further comprises at least one vibrator provided to an outer wall of the powder supply container, the vibrator being electrically connected to the controller.
The vibrator can drive the outer wall of the powder supply container to vibrate in the powder falling process, and the powder falling process is accelerated, so that the powder falling process and the opening speed of the flexible sliding door are kept synchronous.
In one embodiment of the invention, the powder supply unit further comprises a ventilation valve and a communication conduit, wherein the ventilation valve is arranged at one end of the powder supply container, which is relatively far away from the powder storage container, and two ends of the communication conduit are respectively communicated with the ventilation valve and the top of the powder storage container.
So set up, in order to guarantee to supply the powder container to fill the powder in the period, supply the powder container and keep the equilibrium with the atmospheric pressure in the powder container to can guarantee that the powder can flow into flexible pipe under the action of gravity, guaranteed better that supply in the powder container can be fully filled by the powder.
The invention also provides a linear powder quantitative supply method, which adopts the linear powder quantitative supply device, and comprises the following steps:
Under the condition that the powder outlet of the powder supply container is in a closed state, communicating the powder storage container with the powder supply container, and filling powder into the powder supply container through the powder storage container until the powder is filled in the powder supply container;
The communication between the powder storage container and the powder supply container is disconnected, the powder outlet is controlled by the sliding door control unit to slide along one end of the powder outlet to the other end so as to gradually open the powder outlet, and the powder falls to the powder spreading platform through the opened powder outlet until the powder outlet is completely opened, and all the powder in the powder supply container falls to the powder spreading platform to form a target powder pile.
In one embodiment of the present invention, under the condition that the powder outlet of the powder supply container is in a closed state in the step, connecting the communication between the powder storage container and the powder supply container, filling powder into the powder supply container through the powder storage container until the powder is filled in the powder supply container, further comprising the step of:
The rotary driver rotates to drive the driving wheel to rotate, so that the flexible rope is driven to drive the flexible sliding door to slide from one end of the powder outlet to the other end until the flexible sliding door completely closes the powder outlet;
driving the stirrer to stir in the powder storage container;
and opening the compression type stop valve to communicate the powder storage container with the powder supply container, so that the powder in the powder storage container is filled into the powder supply container along the flexible conduit until the powder supply container is full.
In one embodiment of the present invention, in the step of disconnecting the communication between the powder storage container and the powder supply container, the sliding door control unit controls the powder outlet to slide along one end of the powder outlet to the other end so as to gradually open the powder outlet, and powder falls to the powder spreading platform through the opened powder outlet until the powder outlet is completely opened, and all the powder in the powder supply container falls into the powder spreading platform to form a target powder pile, and the method further comprises the steps of:
closing the compression type stop valve to disconnect the communication between the powder storage container and the powder supply container;
setting the rotary driver to rotate so that the flexible sliding door slides along one end of the powder outlet towards the other end, and in the process of gradually opening the powder outlet, powder passes through the opened powder outlet to fall to the powder paving platform until the powder outlet is completely opened, and all the powder in the powder supplying container falls on the powder paving platform to form a target powder pile.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It is noted that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a schematic structural diagram of a linear powder quantitative feeding device according to an embodiment of the invention. The invention provides a linear powder quantitative supply device which is used for quantitatively supplying powder to printing equipment. The invention provides a linear powder quantitative supply device which can be used for supplying powder 50 of a hot melt bonding (SLS) or a hot melt bonding (SLM) device and has the characteristics of simple structure and controllable powder supply breadth.
The invention provides a linear powder quantitative supply device, as shown in fig. 1 and 2, which comprises a bracket 10, a powder paving platform 40 arranged at the bottom of the bracket 10, a powder storage container 20 arranged at the top of the bracket 10 and used for containing powder 50, and at least one powder supply unit 30, wherein the powder supply unit 30 is arranged between the powder storage container 20 and the powder paving platform 40, the powder storage container 20 can provide powder 50 for the powder supply unit 30, and the powder supply unit 30 can spread the powder 50 on a powder paving plane to form a target powder paving plane 51, so that the powder supply process is completed. The powder storage container 20 provided by the invention can supply powder for a plurality of powder supply units 30, and can realize simultaneous powder paving to a plurality of areas of the powder paving platforms 40 or powder paving to a plurality of powder paving platforms 40.
Specifically, as shown in fig. 1 and 2, the powder supply unit 30 is disposed on the side of the powder spreading platform 40, the powder supply unit 30 includes a powder supply container 31, a sliding door control unit 32 and a controller 33, the powder supply container 31 is connected to the powder storage container 20 in a on-off manner and is located between the powder storage container 20 and the powder spreading platform 40, the powder supply container 31 is disposed obliquely with respect to the powder spreading platform 40, the powder supply container 31 has a strip-shaped powder outlet 311 so that the powder 50 falls down to the powder spreading platform 40 for spreading by gravity through the powder outlet 311, the powder outlet 311 corresponds to the powder spreading platform 40, the sliding door control unit 32 controls the powder outlet 311 to be gradually opened or closed along one end of the powder outlet 311 toward the other end, the controller 33 is electrically connected to the sliding door control unit 32, and the powder 50 corresponding to the opened powder outlet 311 can be spread on the powder spreading platform 40 under gravity from the opened powder outlet 311 until the powder spreading platform 40 can be completely opened up to the powder spreading platform 51, and the strip-shaped powder outlet 311 can be completely opened in the powder spreading platform 51 until the powder spreading platform 51 is completely formed in the powder spreading platform 51. When the powder outlet 311 is in a closed state, the powder laying platform 40 is stopped from laying powder, and when the powder outlet 311 is in a completely closed state, the powder storage container 20 is used for filling the powder 50 into the powder supply container 31 so as to prepare for the next powder laying process.
As shown in fig. 1, the powder supply unit 30 further includes a stirrer 21 provided inside the powder storage container 20, the stirrer 21 being electrically connected to the controller 33, the stirrer 21 being capable of slowly stirring inside the powder storage container 20 so that the powder 50 inside the powder storage container 20 is in a flowing state so that the powder 50 can be filled into the powder supply container 31 by gravity.
It should be noted that, since the volume of the powder supply container 31 provided by the present invention is constant, the total amount of powder 50 that can be contained when the powder 50 in the powder storage container 20 is in a saturated state is uniform, and the amount of powder 50 that falls down at different positions along the powder outlet 311 is uniform, so that the powder output is controllable.
In one embodiment of the present invention, the powder supply container 31 and the powder paving stage 40 have an inclination angle therebetween in a range of 0 degrees or more and less than 90 degrees, so that the length of the powder paving 51 can be adjusted by adjusting the inclination angle of the powder supply container 31 with respect to the powder paving stage 40. Here, when the inclination angle is 0 degrees, it means that the powder supply container 31 and the powder spreading platform 40 are disposed in parallel, and at this time, the length of the powder outlet 311 of the powder supply container 31 is equal to the length of the target powder spreading surface 51. When the inclination angle is any angle between 0 degrees and 90 degrees, the powder supply container 31 is arranged obliquely relative to the powder paving platform 40, and the length of the target powder paving surface 51 is equal to the projection length of the powder outlet 311 on the powder paving platform 40 along the vertical powder falling direction, so that the length of the target powder pile can be adjusted by adjusting the size of the inclination angle. In addition, the powder supply container 31 is obliquely arranged from top to bottom, so that the powder 50 in the powder supply container 31 can be better filled, and the powder 50 in the powder supply container 31 can be conveniently filled under the action of gravity. In addition, the top-down design of the powder supply container 31 can also ensure that the opening state of the powder outlet 311 is opened from top to bottom in the powder spreading process, and the powder outlet 311 is gradually opened from the high end to the low end, and the powder 50 at the high end is not moved towards the low end along the cavity of the powder supply container 31 under the action of gravity because the cavity corresponding to the low end of the powder supply container 31 is filled with the powder 50, and when the powder outlet 311 at the position is opened, the powder 50 falls to the powder spreading platform 40.
In order to control the sliding door control unit 32 to automatically control the powder outlet 311 to be opened or closed gradually, and to control the speed of the powder outlet 311 to be opened or closed at the powder outlet 311, the controller 33 of the powder supply unit 30 is electrically connected to the sliding door control unit 32, so that the powder outlet 311 can be kept opened or closed gradually, and it can be ensured that the powder 50 corresponding to the opened powder outlet 311 can fall through the powder outlet 311 whenever the powder outlet 311 is opened.
As shown in fig. 1 and 2, the sliding door control unit 32 includes a flexible sliding door 321, a guide wheel 322, a driving wheel 323 and a rotary driver 324, wherein two sides of the flexible sliding door 321 are connected in a head-to-tail closing manner by a flexible cable 325 and the guide wheel 322, the driving wheel 323 is connected with the rotary driver 324, the flexible sliding door 321 can control the opening and closing of the powder outlet 311, and the rotary driver 324 is electrically connected with the controller 33. Since the powder outlet 311 is stripe-shaped, the flexible sliding door 321 can gradually open or close the powder outlet 311 along one end of the powder outlet 311 toward the other end.
Specifically, when the controller 33 controls the rotary driver 324 to rotate forward (or rotate clockwise), the driving wheel 323 is driven, the flexible cable 325 and the guide wheel 322 rotate forward or rotate clockwise, and the flexible sliding door 321 is pulled by the flexible cable 325 to gradually open the long powder outlet 311 from top to bottom, and when the controller 33 controls the rotary driver 324 to rotate reversely (or rotate anticlockwise), the driving wheel 323 is driven, the flexible cable 325 and the guide wheel 322 rotate reversely or rotate anticlockwise, and the flexible sliding door 321 is pulled by the flexible cable 325 to gradually close the long powder outlet 311 from bottom to top, so as to realize the control of opening and closing the powder outlet 311.
As shown in fig. 1, the powder supply unit 30 further includes a flexible conduit 34 for communicating the powder storage container 20 and the powder supply container 31, and a pressure type stop valve 35 provided in the flexible conduit 34, the pressure type stop valve 35 being electrically connected to the controller 33, the pressure type stop valve 35 being capable of being controlled by the controller 33 to automatically control the on/off state between the powder storage container 20 and the powder supply container 31, thereby controlling the powder 50 charged into the powder supply container 31, and improving the control of the powder supply accuracy. In addition, the provision of the flexible duct 34 can facilitate adjustment of the inclination angle of the powder supply container 31 to change the length of the target powder paving surface 51.
As shown in fig. 1, the powder supply unit 30 further includes at least one vibrator 36, the vibrator 36 is disposed on an outer wall of the powder supply container 31, the vibrator 36 is electrically connected to the controller 33, and the vibrator 36 can drive the outer wall of the powder supply container 31 to vibrate during the powder falling process, so as to accelerate the falling process of the powder 50, and keep the falling process of the powder 50 synchronous with the opening speed of the flexible sliding door 321.
As shown in fig. 1, the powder supplying unit 30 further includes a ventilation valve 37, wherein the ventilation valve 37 is disposed at an end of the powder supplying container 31 relatively far from the powder storing container 20, and the ventilation valve 37 is disposed to exhaust air existing in the powder supplying container 31 through the ventilation valve 37, so as to better ensure that the powder supplying container 31 can be completely filled with the powder 50. Further, as shown in fig. 1, in order to ensure that the air pressure in the powder supply container 31 and the air pressure in the powder storage container 20 are maintained in balance during the filling of the powder 50 into the powder supply container 31, the powder supply unit 30 further includes a communication duct 38, and both ends of the communication duct 38 are respectively communicated with the air-permeable valve 37 and the top of the powder storage container 20, so that the powder 50 can be ensured to flow into the flexible duct 34 under the action of gravity.
The principle of the linear powder 50 quantitative supply device provided by the invention is that in the powder supply process, as shown in fig. 3 to 5, before starting powder supply, a controller 33 sends a starting instruction to a vibrator 36 to control the vibrator 36 to drive a powder supply cavity shell to vibrate, the controller 33 sends a stopping instruction to a pressing stop valve 35 to control the pressing stop valve 35 to squeeze and cut off a passage of a flexible guide pipe 34, the controller 33 sends a closing instruction to a rotary driver 324 to control the rotary driver 324 to drive a flexible sliding door 321 to close a strip-shaped powder outlet 311 of a powder supply container 31 from bottom to top, firstly, sufficient quantity of powder 50 is added to the powder supply container 20, the controller 33 sends a stirring instruction to the stirrer 21 to control the stirrer 21 to stir slowly, so that the powder 50 in the powder supply container 20 is always in a circulating flow state, the controller 33 sends an opening instruction to the pressing stop valve 35 to control the pressing stop valve 35 to separate, so that the flexible guide pipe 34 is communicated under the pressure of the powder supply container 50 under the self-rebound force, the flowing state powder 50 in the powder supply container 20 flows out from the bottom opening of the powder supply container 20 and drives the flexible guide pipe 321 to close the strip-shaped powder outlet 311 of the powder supply container 31 from bottom to the opening of the powder supply container 31 through the flexible guide pipe 31, the vibration valve 31 can be filled with the powder supply container 31 until the powder can flow into the powder supply container 31 through the vibration valve 31 to the vibration container 31 for a certain time, and the vibration process can be completed, and the powder can flow into the powder supply container 31 can be completely filled up, and the powder supply container 31 can be completely filled, and the powder can be filled into the powder container is in the powder container 31, and the powder container is in the powder container and the powder container is in the powder container and the powder.
As shown in fig. 6 to 9, the powder laying process is that the controller 33 sends a stop command to the pressing type stop valve 35 to control the pressing type stop valve 35 to squeeze and cut off the passage of the flexible conduit 34, the controller 33 sends an opening command to the rotary driver 324 to control the rotary driver 324 to drive the flexible sliding door 321 to gradually open the strip-shaped powder outlet 311 from top to bottom, the powder 50 in the powder supply container 31 falls from the opened part of the strip-shaped powder outlet 311 to a target powder supply position, the vibrator 36 drives the outer wall of the powder supply container 31 to vibrate during powder falling, the falling process of the powder 50 is accelerated, the falling process of the powder 50 is kept synchronous with the opening speed of the flexible sliding door 321, and after the flexible sliding door 321 completely opens the powder outlet 311, the powder 50 in the powder supply container 31 synchronously falls to the target powder supply position to form a powder pile with the length consistent with the projection length of the strip-shaped powder outlet 311 along the perpendicular to the gravity, and the powder laying process is completed.
The controller 33 sends out a closing instruction to rotate the driver 324 reversely, the driver 324 is controlled to drive the flexible sliding door 321 to close the powder outlet 311, the controller 33 opens the pressing type stop valve 35, and the powder 50 in the powder storage container 20 flows into the powder supply container 31 through the flexible conduit 34 until the powder supply container 31 is filled with the powder 50 again for the next powder paving.
The invention provides a linear powder quantitative supply device, which comprises a powder storage container 20, a flexible conduit 34 and a powder supply container 31, wherein the powder storage container 20 and the flexible conduit 34 are connected in series, the powder storage container 20 is positioned above the powder supply container 31, the powder supply container 31 is positioned below the powder storage container 20, and the whole powder supply container 31 is arranged downwards and obliquely, so that the powder 50 in the powder storage container 20 has good downward flow condition under the action of gravity, the powder 50 can smoothly and quickly flow into the powder supply container 31 from the powder storage container 20 under the double actions of a stirrer 21 and a vibrator 36 of the powder supply container 31 in the powder storage container 20, the flexible conduit 34 wall is extruded from the outside by the compression type stop valve 35, the cross section of the flexible conduit 34 is closed, the powder 50 flow is completely cut off, and then the powder 50 flow from the powder storage container 20 to the powder supply container 31 is cut off when the powder outlet 311 of the powder supply container 31 is opened, when the compression type stop valve 35 is opened or closed, no power element or other movable parts exist in the flexible conduit 34, the problem of blocking movable components in the flexible conduit 34 and the powder 50 in the flexible conduit 34 cannot be smoothly and quickly flow into the powder supply container 31, and the problem of wear and the powder 50 cannot be leaked out, and the problem of the flexible components is avoided.
The invention discloses a powder supply container 31, which is characterized in that a strip-shaped powder outlet 311 is formed in the powder supply container 31, powder 50 in the powder supply container 31 falls to a powder paving platform 40 through the powder outlet 311 to form a powder pile, the opening and closing of the strip-shaped powder outlet 311 are realized through the reciprocating motion of a flexible sliding door 321 of a sliding door unit, the flexible sliding door 321 is driven by a rotary driver 324 to gradually open the powder outlet 311 in a top-down mode so as to avoid the situation that the powder outlet 311 is completely opened instantly, the powder 50 falls along the inclined posture of the powder supply container 31 to cause the powder pile powder quantity to deviate to one side of the tail end of the powder supply container 31, and the powder 50 of the opened section of the powder outlet 311 falls to the powder paving platform 40 synchronously with the opening action of the flexible sliding door 321 under the action of a vibrator 36, so that the powder pile powder quantity is distributed, and the powder pile powder quantity is only 50 per unit length of the powder pile is S/S (alpha) when the sectional area of the powder supply container 31 is S and the inclined angle alpha is assumed.
The linear powder 50 quantitative supply device provided by the invention adopts natural powder falling and the volume measurement of the powder supply container 31 under the action of gravity, can realize the fixed-length and quantitative supply of the powder 50 along the powder supply direction, adopts the external-action compression type stop valve 35 to control the on-off of the powder paths of the powder storage container 20 and the powder supply container 31, has the advantages of accurate and controllable powder supply quantity, no need of an accurate powder quantity sensor, only needs to set the opening time of the compression type stop valve 35 with redundancy according to the volume of the powder supply container 31, and has no power element and other movable parts in the powder path, and the powder supply is reliable and pollution-free. Therefore, the linear powder quantitative supply device provided by the invention has the advantages of simple structure, low cost, high powder supply precision, accurate and controllable powder supply breadth and powder 50 distribution, and is easy to apply to powder three-dimensional forming equipment with various specifications.
The invention also provides a linear powder quantitative supply method, which adopts the linear powder quantitative supply device, and the method comprises the following steps:
Under the condition that the powder outlet 311 of the powder supply container 31 is in a closed state, communicating the powder storage container 20 and the powder supply container 31, and filling the powder container 31 with the powder 50 through the powder storage container 20 until the powder 50 is full of the powder supply container 31;
The communication between the powder storage container 20 and the powder supply container 31 is disconnected, the sliding door control unit 32 controls the powder outlet 311 to slide along one end of the powder outlet 311 towards the other end so as to gradually open the powder outlet 311, the powder 50 passes through the opened powder outlet 311 and falls to the powder paving platform 40 until the powder outlet 311 is completely opened, and the powder 50 in the powder supply container 31 falls to the powder paving platform 40 to form a target powder pile.
In one embodiment of the present invention, in the condition that the powder outlet 311 of the powder supply container 31 is closed in the step, the communication between the powder storage container 20 and the powder supply container 31 is performed, and the powder 50 is filled into the powder supply container 31 through the powder storage container 20 until the powder 50 is filled into the powder supply container 31, further comprising the steps of:
The communication between the powder storage container 20 and the powder supply container 31 is disconnected, and the powder outlet 311 is completely opened by the sliding door control unit 32 to empty the powder 50 in the powder supply container 31.
In one embodiment of the present invention, in a case where the powder outlet 311 of the powder supply container 31 is in a closed state in the step, communication is made between the powder storage container 20 and the powder supply container 31, and the powder 50 is filled into the powder supply container 31 through the powder storage container 20 until the powder 50 is filled into the powder supply container 31, further comprising the steps of:
the rotation driver 324 rotates to drive the driving wheel 323 to rotate, so as to drive the flexible cable 325 to pull the flexible sliding door 321 to slide from one end of the powder outlet 311 to the other end until the flexible sliding door 321 completely closes the powder outlet 311;
the pressing shut-off valve 35 is opened to communicate between the powder storage container 20 and the powder supply container 31, so that the powder 50 in the powder storage container 20 is filled into the powder supply container 31 along the flexible conduit 34 until the powder supply container 31 is filled.
In one embodiment of the present invention, the pressing shut-off valve 35 is opened in step to communicate between the powder storage container 20 and the powder supply container 31 so that the powder 50 in the powder storage container 20 is filled into the powder supply container 31 along the flexible conduit 34 until the powder supply container 31 is filled, and the steps of:
The stirrer 21 is driven to stir in the powder storage container 20.
In one embodiment of the present invention, when the communication between the powder storage container 20 and the powder supply container 31 is disconnected in the step, the sliding door control unit 32 controls the powder outlet 311 to slide along one end of the powder outlet 311 toward the other end so as to gradually open the powder outlet 311, and the powder 50 falls to the powder paving platform 40 through the opened powder outlet 311 until the powder outlet 311 is completely opened, and the powder 50 in the powder supply container 31 falls into the powder paving platform 40 to form a target powder pile, further comprising the steps of:
Closing the pressing type stop valve 35 to disconnect the communication between the powder storage container 20 and the powder supply container 31;
Setting the rotation driver 324 to rotate, so that the powder 50 passes through the opened powder outlet 311 and falls onto the powder spreading platform 40 until the powder outlet 311 is completely opened, and the powder 50 in the powder supply container 31 falls onto the powder spreading platform 40 to form a target powder pile in the process that the flexible sliding door 321 slides along one end of the powder outlet 311 towards the other end to gradually open the powder outlet 311.
In one embodiment of the present invention, in the process of setting the rotation driver 324 to rotate forward in step to slide the flexible sliding door 321 along one end of the powder outlet 311 toward the other end to gradually open the powder outlet 311, the powder 50 falls to the powder paving platform 40 through the opened powder outlet 311 until the powder outlet 311 is completely opened, and the powder 50 in the powder supply container 31 falls to the powder paving platform 40 to form a target powder pile, further comprising the steps of:
The driving vibrator 36 vibrates on the outer wall of the powder supply container 31.
The specific embodiment of the linear powder quantitative supply method provided by the invention has been described in detail when introducing the linear powder quantitative supply device, and will not be described here again.
It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the invention and are not to be construed as limiting the invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.